---
OA_place: publisher
_id: '14547'
abstract:
- lang: eng
  text: "Superconductor-semiconductor heterostructures currently capture a significant
    amount of research interest and they serve as the physical platform in many proposals
    towards topological quantum computation.\r\nDespite being under extensive investigations,
    historically using transport techniques, the basic properties of the interface
    between the superconductor and the semiconductor remain to be understood.\r\n\r\nIn
    this thesis, two separate studies on the Al-InAs heterostructures are reported
    with the first focusing on the physics of the material motivated by the emergence
    of a new phase, the Bogoliubov-Fermi surface. \r\nThe second focuses on a technological
    application, a gate-tunable Josephson parametric amplifier.\r\n\r\nIn the first
    study, we investigate the hypothesized unconventional nature of the induced superconductivity
    at the interface between the Al thin film and the InAs quantum well.\r\nWe embed
    a two-dimensional Al-InAs hybrid system in a resonant microwave circuit allowing
    measurements of change in inductance.\r\nThe behaviour of the resonance in a range
    of temperature and in-plane magnetic field has been studied and compared with
    the theory of conventional s-wave superconductor and a two-component theory that
    includes both contribution of the $s$-wave pairing in Al and the intraband $p
    \\pm ip$ pairing in InAs.\r\nMeasuring the temperature dependence of resonant
    frequency, no discrepancy is found between data and the conventional theory.\r\nWe
    observe the breakdown of superconductivity due to an applied magnetic field which
    contradicts the conventional theory.\r\nIn contrast, the data can be captured
    quantitatively by fitting to a two-component model.\r\nWe find the evidence of
    the intraband $p \\pm ip$ pairing in the InAs and the emergence of the Bogoliubov-Fermi
    surfaces due to magnetic field with the characteristic value $B^* = 0.33~\\mathrm{T}$.\r\nFrom
    the fits, the sheet resistance of Al, the carrier density and mobility in InAs
    are determined.\r\nBy systematically studying the anisotropy of the circuit response,
    we find weak anisotropy for $B < B^*$ and increasingly strong anisotropy for $B
    > B^*$ resulting in a pronounced two-lobe structure in polar plot of frequency
    versus field angle.\r\nStrong resemblance between the field dependence of dissipation
    and superfluid density hints at a hidden signature of the Bogoliubov-Fermi surface
    that is burried in the dissipation data.\r\n\r\nIn the second study, we realize
    a parametric amplifier with a Josephson field effect transistor as the active
    element.\r\nThe device's modest construction consists of a gated SNS weak link
    embedded at the center of a coplanar waveguide resonator.\r\nBy applying a gate
    voltage, the resonant frequency is field-effect tunable over a range of 2 GHz.\r\nModelling
    the JoFET minimally as a parallel RL circuit, the dissipation introduced by the
    JoFET can be quantitatively related to the gate voltage.\r\nWe observed gate-tunable
    Kerr nonlinearity qualitatively in line with expectation.\r\nThe JoFET amplifier
    has 20 dB of gain, 4 MHz of instantaneous bandwidth, and a 1dB compression point
    of -125.5 dBm when operated at a fixed resonant frequency.\r\nIn general, the
    signal-to-noise ratio is improved by 5-7 dB when the JoFET amplifier is activated
    compared.\r\nThe noise of the measurement chain and insertion loss of relevant
    circuit elements are calibrated to determine the expected and the real noise performance
    of the JoFET amplifier.\r\nAs a quantification of the noise performance, the measured
    total input-referred noise of the JoFET amplifier is in good agreement with the
    estimated expectation which takes device loss into account.\r\nWe found that the
    noise performance of the device reported in this document approaches one photon
    of total input-referred added noise which is the quantum limit imposed in nondegenerate
    parametric amplifier."
acknowledged_ssus:
- _id: NanoFab
- _id: Bio
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Duc T
  full_name: Phan, Duc T
  id: 29C8C0B4-F248-11E8-B48F-1D18A9856A87
  last_name: Phan
citation:
  ama: Phan DT. Resonant microwave spectroscopy of Al-InAs. 2023. doi:<a href="https://doi.org/10.15479/14547">10.15479/14547</a>
  apa: Phan, D. T. (2023). <i>Resonant microwave spectroscopy of Al-InAs</i>. Institute
    of Science and Technology Austria. <a href="https://doi.org/10.15479/14547">https://doi.org/10.15479/14547</a>
  chicago: Phan, Duc T. “Resonant Microwave Spectroscopy of Al-InAs.” Institute of
    Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/14547">https://doi.org/10.15479/14547</a>.
  ieee: D. T. Phan, “Resonant microwave spectroscopy of Al-InAs,” Institute of Science
    and Technology Austria, 2023.
  ista: Phan DT. 2023. Resonant microwave spectroscopy of Al-InAs. Institute of Science
    and Technology Austria.
  mla: Phan, Duc T. <i>Resonant Microwave Spectroscopy of Al-InAs</i>. Institute of
    Science and Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/14547">10.15479/14547</a>.
  short: D.T. Phan, Resonant Microwave Spectroscopy of Al-InAs, Institute of Science
    and Technology Austria, 2023.
corr_author: '1'
date_created: 2023-11-17T13:45:26Z
date_published: 2023-11-16T00:00:00Z
date_updated: 2026-07-08T08:38:43Z
day: '16'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: AnHi
doi: 10.15479/14547
file:
- access_level: open_access
  checksum: db0c37d213bc002125bd59690e9db246
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  file_size: 279319709
  relation: source_file
file_date_updated: 2023-11-22T09:46:06Z
has_accepted_license: '1'
keyword:
- superconductor-semiconductor
- superconductivity
- Al
- InAs
- p-wave
- superconductivity
- JPA
- microwave
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-sa/4.0/
month: '11'
oa: 1
oa_version: Published Version
page: '80'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '10851'
    relation: part_of_dissertation
    status: public
  - id: '13264'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Andrew P
  full_name: Higginbotham, Andrew P
  id: 4AD6785A-F248-11E8-B48F-1D18A9856A87
  last_name: Higginbotham
  orcid: 0000-0003-2607-2363
title: Resonant microwave spectroscopy of Al-InAs
tmp:
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  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
OA_place: publisher
_id: '14641'
abstract:
- lang: eng
  text: "Mutation rates represent the net result of complex interactions among various\r\ncellular
    processes and can dramatically influence the evolutionary fate of\r\nmicrobial
    populations. However, many popular techniques used to study\r\nmutations are subject
    to the confounding effects of heredity and the subtleties\r\nof adaptation to
    selection, all of which make it difficult to observe any dynamic\r\nresponses
    of mutation rates to fitness challenges. Furthermore, in spite of the\r\nubiquity
    of quorum sensing systems across the bacterial domain and relevance\r\nfor many
    physiological behaviors, the effects of such mechanisms on mutation\r\nrate and
    adaptation remain poorly understood. In the following work, I\r\npresent the development
    of a microfluidic droplet-based method to measure\r\nsingle base-pair mutation
    rates in growing populations of the bacterium\r\nEscherichia coli. I use this
    method to observe a stress-induced increase in\r\nmutation rate that is mediated
    by luxS, a highly conserved bacterial quorum\r\nsensing component. I also show
    that the aforementioned increase in mutation\r\nrate, and its associated control
    by luxS, corresponds to a higher degree of\r\nadaptability under competitive environments."
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
- _id: CampIT
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Mike
  full_name: Hennessey-Wesen, Mike
  id: 3F338C72-F248-11E8-B48F-1D18A9856A87
  last_name: Hennessey-Wesen
citation:
  ama: Hennessey-Wesen M. Adaptive mutation in E. coli modulated by luxS. 2023. doi:<a
    href="https://doi.org/10.15479/at:ista:14641">10.15479/at:ista:14641</a>
  apa: Hennessey-Wesen, M. (2023). <i>Adaptive mutation in E. coli modulated by luxS</i>.
    Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:14641">https://doi.org/10.15479/at:ista:14641</a>
  chicago: Hennessey-Wesen, Mike. “Adaptive Mutation in E. Coli Modulated by LuxS.”
    Institute of Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:14641">https://doi.org/10.15479/at:ista:14641</a>.
  ieee: M. Hennessey-Wesen, “Adaptive mutation in E. coli modulated by luxS,” Institute
    of Science and Technology Austria, 2023.
  ista: Hennessey-Wesen M. 2023. Adaptive mutation in E. coli modulated by luxS. Institute
    of Science and Technology Austria.
  mla: Hennessey-Wesen, Mike. <i>Adaptive Mutation in E. Coli Modulated by LuxS</i>.
    Institute of Science and Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:14641">10.15479/at:ista:14641</a>.
  short: M. Hennessey-Wesen, Adaptive Mutation in E. Coli Modulated by LuxS, Institute
    of Science and Technology Austria, 2023.
corr_author: '1'
das_tickbox: '1'
date_created: 2023-12-04T13:17:37Z
date_published: 2023-11-30T00:00:00Z
date_updated: 2026-07-13T10:55:56Z
day: '30'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: BjHo
doi: 10.15479/at:ista:14641
doi_confirm: '1'
ec_funded: 1
file:
- access_level: closed
  checksum: 4127c285b34f4bf7fb31ef24f9d14c25
  content_type: application/vnd.oasis.opendocument.text
  creator: mhenness
  date_created: 2023-12-06T13:13:26Z
  date_updated: 2024-11-30T23:30:05Z
  embargo_to: open_access
  file_id: '14648'
  file_name: mike_thesis_v06-12-2023.odt
  file_size: 46405919
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  creator: mhenness
  date_created: 2023-12-06T13:14:15Z
  date_updated: 2026-07-13T10:55:56Z
  embargo: 2026-11-18
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  checksum: 902102d26d30e74dbd6cdd70a65820c3
  content_type: application/pdf
  creator: cchlebak
  date_created: 2025-05-20T12:59:12Z
  date_updated: 2025-05-20T22:31:34Z
  description: for printing purposes only
  embargo_to: open_access
  file_id: '19720'
  file_name: 2023_Hennessey_Michael_Thesis_print.pdf
  file_size: 45847968
  relation: other
  title: Print version
file_date_updated: 2026-07-13T10:55:56Z
has_accepted_license: '1'
keyword:
- microfluidics
- miceobiology
- mutations
- quorum sensing
language:
- iso: eng
month: '11'
oa_version: Published Version
page: '104'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Björn
  full_name: Hof, Björn
  id: 3A374330-F248-11E8-B48F-1D18A9856A87
  last_name: Hof
  orcid: 0000-0003-2057-2754
title: Adaptive mutation in E. coli modulated by luxS
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '12334'
abstract:
- lang: eng
  text: Regulation of the Arp2/3 complex is required for productive nucleation of
    branched actin networks. An emerging aspect of regulation is the incorporation
    of subunit isoforms into the Arp2/3 complex. Specifically, both ArpC5 subunit
    isoforms, ArpC5 and ArpC5L, have been reported to fine-tune nucleation activity
    and branch junction stability. We have combined reverse genetics and cellular
    structural biology to describe how ArpC5 and ArpC5L differentially affect cell
    migration. Both define the structural stability of ArpC1 in branch junctions and,
    in turn, by determining protrusion characteristics, affect protein dynamics and
    actin network ultrastructure. ArpC5 isoforms also affect the positioning of members
    of the Ena/Vasodilator-stimulated phosphoprotein (VASP) family of actin filament
    elongators, which mediate ArpC5 isoform–specific effects on the actin assembly
    level. Our results suggest that ArpC5 and Ena/VASP proteins are part of a signaling
    pathway enhancing cell migration.</jats:p>
acknowledged_ssus:
- _id: ScienComp
- _id: LifeSc
- _id: Bio
- _id: EM-Fac
acknowledgement: "We would like to thank K. von Peinen and B. Denker (Helmholtz Centre
  for Infection Research, Braunschweig, Germany) for experimental and technical assistance,
  respectively.\r\nThis research was supported by the Scientific Service Units (SSUs)
  of ISTA through resources provided by Scientific Computing (SciComp), the Life Science
  Facility (LSF), the Imaging and Optics facility (IOF), and the Electron Microscopy
  Facility (EMF). We acknowledge support from ISTA and from the Austrian Science Fund
  (FWF) (P33367) to F.K.M.S., from the Research Training Group GRK2223 and the Helmholtz
  Society to K.R,. and from the Deutsche Forschungsgemeinschaft (DFG) to J.F. and
  K.R."
article_number: add6495
article_processing_charge: No
article_type: original
author:
- first_name: Florian
  full_name: Fäßler, Florian
  id: 404F5528-F248-11E8-B48F-1D18A9856A87
  last_name: Fäßler
  orcid: 0000-0001-7149-769X
- first_name: Manjunath
  full_name: Javoor, Manjunath
  id: 305ab18b-dc7d-11ea-9b2f-b58195228ea2
  last_name: Javoor
  orcid: 0000-0003-2311-2112
- first_name: Julia
  full_name: Datler, Julia
  id: 3B12E2E6-F248-11E8-B48F-1D18A9856A87
  last_name: Datler
  orcid: 0000-0002-3616-8580
- first_name: Hermann
  full_name: Döring, Hermann
  last_name: Döring
- first_name: Florian
  full_name: Hofer, Florian
  id: b9d234ba-9e33-11ed-95b6-cd561df280e6
  last_name: Hofer
- first_name: Georgi A
  full_name: Dimchev, Georgi A
  id: 38C393BE-F248-11E8-B48F-1D18A9856A87
  last_name: Dimchev
  orcid: 0000-0001-8370-6161
- first_name: Victor-Valentin
  full_name: Hodirnau, Victor-Valentin
  id: 3661B498-F248-11E8-B48F-1D18A9856A87
  last_name: Hodirnau
  orcid: 0000-0003-3904-947X
- first_name: Jan
  full_name: Faix, Jan
  last_name: Faix
- first_name: Klemens
  full_name: Rottner, Klemens
  last_name: Rottner
- first_name: Florian KM
  full_name: Schur, Florian KM
  id: 48AD8942-F248-11E8-B48F-1D18A9856A87
  last_name: Schur
  orcid: 0000-0003-4790-8078
citation:
  ama: Fäßler F, Javoor M, Datler J, et al. ArpC5 isoforms regulate Arp2/3 complex–dependent
    protrusion through differential Ena/VASP positioning. <i>Science Advances</i>.
    2023;9(3). doi:<a href="https://doi.org/10.1126/sciadv.add6495">10.1126/sciadv.add6495</a>
  apa: Fäßler, F., Javoor, M., Datler, J., Döring, H., Hofer, F., Dimchev, G. A.,
    … Schur, F. K. (2023). ArpC5 isoforms regulate Arp2/3 complex–dependent protrusion
    through differential Ena/VASP positioning. <i>Science Advances</i>. American Association
    for the Advancement of Science. <a href="https://doi.org/10.1126/sciadv.add6495">https://doi.org/10.1126/sciadv.add6495</a>
  chicago: Fäßler, Florian, Manjunath Javoor, Julia Datler, Hermann Döring, Florian
    Hofer, Georgi A Dimchev, Victor-Valentin Hodirnau, Jan Faix, Klemens Rottner,
    and Florian KM Schur. “ArpC5 Isoforms Regulate Arp2/3 Complex–Dependent Protrusion
    through Differential Ena/VASP Positioning.” <i>Science Advances</i>. American
    Association for the Advancement of Science, 2023. <a href="https://doi.org/10.1126/sciadv.add6495">https://doi.org/10.1126/sciadv.add6495</a>.
  ieee: F. Fäßler <i>et al.</i>, “ArpC5 isoforms regulate Arp2/3 complex–dependent
    protrusion through differential Ena/VASP positioning,” <i>Science Advances</i>,
    vol. 9, no. 3. American Association for the Advancement of Science, 2023.
  ista: Fäßler F, Javoor M, Datler J, Döring H, Hofer F, Dimchev GA, Hodirnau V-V,
    Faix J, Rottner K, Schur FK. 2023. ArpC5 isoforms regulate Arp2/3 complex–dependent
    protrusion through differential Ena/VASP positioning. Science Advances. 9(3),
    add6495.
  mla: Fäßler, Florian, et al. “ArpC5 Isoforms Regulate Arp2/3 Complex–Dependent Protrusion
    through Differential Ena/VASP Positioning.” <i>Science Advances</i>, vol. 9, no.
    3, add6495, American Association for the Advancement of Science, 2023, doi:<a
    href="https://doi.org/10.1126/sciadv.add6495">10.1126/sciadv.add6495</a>.
  short: F. Fäßler, M. Javoor, J. Datler, H. Döring, F. Hofer, G.A. Dimchev, V.-V.
    Hodirnau, J. Faix, K. Rottner, F.K. Schur, Science Advances 9 (2023).
corr_author: '1'
date_created: 2023-01-23T07:26:42Z
date_published: 2023-01-20T00:00:00Z
date_updated: 2026-09-03T09:36:24Z
day: '20'
ddc:
- '570'
department:
- _id: FlSc
- _id: EM-Fac
doi: 10.1126/sciadv.add6495
external_id:
  isi:
  - '000964550100015'
  pmid:
  - '36662867'
file:
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  checksum: ce81a6d0b84170e5e8c62f6acfa15d9e
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  creator: dernst
  date_created: 2023-01-23T07:45:54Z
  date_updated: 2023-01-23T07:45:54Z
  file_id: '12335'
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  file_size: 1756234
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  success: 1
file_date_updated: 2023-01-23T07:45:54Z
has_accepted_license: '1'
intvolume: '         9'
isi: 1
issue: '3'
keyword:
- Multidisciplinary
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 9B954C5C-BA93-11EA-9121-9846C619BF3A
  grant_number: P33367
  name: Structure and isoform diversity of the Arp2/3 complex
publication: Science Advances
publication_identifier:
  issn:
  - 2375-2548
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
related_material:
  record:
  - id: '14562'
    relation: research_data
    status: public
  - id: '18766'
    relation: dissertation_contains
    status: public
  - id: '22744'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: ArpC5 isoforms regulate Arp2/3 complex–dependent protrusion through differential
  Ena/VASP positioning
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2023'
...
---
OA_place: publisher
_id: '12491'
abstract:
- lang: eng
  text: "The extracellular matrix (ECM) is a hydrated and complex three-dimensional
    network consisting of proteins, polysaccharides, and water. It provides structural
    scaffolding for the cells embedded within it and is essential in regulating numerous
    physiological processes, including cell migration and proliferation, wound healing,
    and stem cell fate. \r\nDespite extensive study, detailed structural knowledge
    of ECM components in physiologically relevant conditions is still rudimentary.
    This is due to methodological limitations in specimen preparation protocols which
    are incompatible with keeping large samples, such as the ECM, in their native
    state for subsequent imaging. Conventional electron microscopy (EM) techniques
    rely on fixation, dehydration, contrasting, and sectioning. This results in the
    alteration of a highly hydrated environment and the potential introduction of
    artifacts. Other structural biology techniques, such as nuclear magnetic resonance
    (NMR) spectroscopy and X-ray crystallography, allow high-resolution analysis of
    protein structures but only work on homogenous and purified samples, hence lacking
    contextual information. Currently, no approach exists for the ultrastructural
    and structural study of extracellular components under native conditions in a
    physiological, 3D environment. \r\nIn this thesis, I have developed a workflow
    that allows for the ultrastructural analysis of the ECM in near-native conditions
    at molecular resolution. The developments I introduced include implementing a
    novel specimen preparation workflow for cell-derived matrices (CDMs) to render
    them compatible with ion-beam milling and subsequent high-resolution cryo-electron
    tomography (ET). \r\nTo this end, I have established protocols to generate CDMs
    grown over several weeks on EM grids that are compatible with downstream cryo-EM
    sample preparation and imaging techniques. Characterization of these ECMs confirmed
    that they contain essential ECM components such as collagen I, collagen VI, and
    fibronectin I in high abundance and hence represent a bona fide biologically-relevant
    sample. I successfully optimized vitrification of these specimens by testing various
    vitrification techniques and cryoprotectants. \r\nIn order to obtain high-resolution
    molecular insights into the ultrastructure and organization of CDMs, I established
    cryo-focused ion beam scanning electron microscopy (FIBSEM) on these challenging
    and complex specimens. I explored different approaches for the creation of thin
    cryo-lamellae by FIB milling and succeeded in optimizing the cryo-lift-out technique,
    resulting in high-quality lamellae of approximately 200 nm thickness. \r\nHigh-resolution
    Cryo-ET of these lamellae revealed for the first time the architecture of native
    CDM in the context of matrix-secreting cells. This allowed for the in situ visualization
    of fibrillar matrix proteins such as collagen, laying the foundation for future
    structural and ultrastructural characterization of these proteins in their near-native
    environment. \r\nIn summary, in this thesis, I present a novel workflow that combines
    state-of-the-art cryo-EM specimen preparation and imaging technologies to permit
    characterization of the ECM, an important tissue component in higher organisms.
    This innovative and highly versatile workflow will enable addressing far-reaching
    questions on ECM architecture, composition, and reciprocal ECM-cell interactions."
acknowledged_ssus:
- _id: EM-Fac
- _id: LifeSc
- _id: Bio
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Bettina
  full_name: Zens, Bettina
  id: 45FD126C-F248-11E8-B48F-1D18A9856A87
  last_name: Zens
  orcid: 0000-0002-9561-1239
citation:
  ama: Zens B. Ultrastructural characterization of natively preserved extracellular
    matrix by cryo-electron tomography. 2023. doi:<a href="https://doi.org/10.15479/at:ista:12491">10.15479/at:ista:12491</a>
  apa: Zens, B. (2023). <i>Ultrastructural characterization of natively preserved
    extracellular matrix by cryo-electron tomography</i>. Institute of Science and
    Technology Austria. <a href="https://doi.org/10.15479/at:ista:12491">https://doi.org/10.15479/at:ista:12491</a>
  chicago: Zens, Bettina. “Ultrastructural Characterization of Natively Preserved
    Extracellular Matrix by Cryo-Electron Tomography.” Institute of Science and Technology
    Austria, 2023. <a href="https://doi.org/10.15479/at:ista:12491">https://doi.org/10.15479/at:ista:12491</a>.
  ieee: B. Zens, “Ultrastructural characterization of natively preserved extracellular
    matrix by cryo-electron tomography,” Institute of Science and Technology Austria,
    2023.
  ista: Zens B. 2023. Ultrastructural characterization of natively preserved extracellular
    matrix by cryo-electron tomography. Institute of Science and Technology Austria.
  mla: Zens, Bettina. <i>Ultrastructural Characterization of Natively Preserved Extracellular
    Matrix by Cryo-Electron Tomography</i>. Institute of Science and Technology Austria,
    2023, doi:<a href="https://doi.org/10.15479/at:ista:12491">10.15479/at:ista:12491</a>.
  short: B. Zens, Ultrastructural Characterization of Natively Preserved Extracellular
    Matrix by Cryo-Electron Tomography, Institute of Science and Technology Austria,
    2023.
corr_author: '1'
date_created: 2023-02-02T14:50:20Z
date_published: 2023-02-02T00:00:00Z
date_updated: 2026-04-07T13:49:23Z
day: '02'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: FlSc
doi: 10.15479/at:ista:12491
file:
- access_level: open_access
  checksum: 069d87f025e0799bf9e3c375664264f2
  content_type: application/pdf
  creator: bzens
  date_created: 2023-02-07T13:07:38Z
  date_updated: 2024-02-08T23:30:04Z
  embargo: 2024-02-07
  file_id: '12527'
  file_name: PhDThesis_BettinaZens_2023_final.pdf
  file_size: 23082464
  relation: main_file
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  checksum: 8c66ed203495d6e078ed1002a866520c
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  creator: bzens
  date_created: 2023-02-07T13:09:05Z
  date_updated: 2024-02-08T23:30:04Z
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  file_name: PhDThesis_BettinaZens_2023_final.docx
  file_size: 106169509
  relation: source_file
file_date_updated: 2024-02-08T23:30:04Z
has_accepted_license: '1'
keyword:
- cryo-EM
- cryo-ET
- FIB milling
- method development
- FIBSEM
- extracellular matrix
- ECM
- cell-derived matrices
- CDMs
- cell culture
- high pressure freezing
- HPF
- structural biology
- tomography
- collagen
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: '187'
project:
- _id: eba3b5f6-77a9-11ec-83b8-cf0905748aa3
  name: Integrated visual proteomics of reciprocal cell-extracellular matrix interactions
- _id: 059B463C-7A3F-11EA-A408-12923DDC885E
  name: "NÃ\x96-Fonds Preis fÃ¼r die Jungforscherin des Jahres am IST Austria"
publication_identifier:
  isbn:
  - 978-3-99078-027-5
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '8586'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Florian KM
  full_name: Schur, Florian KM
  id: 48AD8942-F248-11E8-B48F-1D18A9856A87
  last_name: Schur
  orcid: 0000-0003-4790-8078
title: Ultrastructural characterization of natively preserved extracellular matrix
  by cryo-electron tomography
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
OA_place: publisher
_id: '12809'
abstract:
- lang: eng
  text: "Understanding the mechanisms of learning and memory formation has always
    been one of\r\nthe main goals in neuroscience. Already Pavlov (1927) in his early
    days has used his classic\r\nconditioning experiments to study the neural mechanisms
    governing behavioral adaptation.\r\nWhat was not known back then was that the
    part of the brain that is largely responsible for\r\nthis type of associative
    learning is the cerebellum.\r\nSince then, plenty of theories on cerebellar learning
    have emerged. Despite their differences,\r\none thing they all have in common
    is that learning relies on synaptic and intrinsic plasticity.\r\nThe goal of my
    PhD project was to unravel the molecular mechanisms underlying synaptic\r\nplasticity
    in two synapses that have been shown to be implicated in motor learning, in an\r\neffort
    to understand how learning and memory formation are processed in the cerebellum.\r\nOne
    of the earliest and most well-known cerebellar theories postulates that motor
    learning\r\nlargely depends on long-term depression at the parallel fiber-Purkinje
    cell (PC-PC) synapse.\r\nHowever, the discovery of other types of plasticity in
    the cerebellar circuitry, like long-term\r\npotentiation (LTP) at the PC-PC synapse,
    potentiation of molecular layer interneurons (MLIs),\r\nand plasticity transfer
    from the cortex to the cerebellar/ vestibular nuclei has increased the\r\npopularity
    of the idea that multiple sites of plasticity might be involved in learning.\r\nStill
    a lot remains unknown about the molecular mechanisms responsible for these types
    of\r\nplasticity and whether they occur during physiological learning.\r\nIn the
    first part of this thesis we have analyzed the variation and nanodistribution
    of voltagegated calcium channels (VGCCs) and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic
    acid\r\ntype glutamate receptors (AMPARs) on the parallel fiber-Purkinje cell
    synapse after vestibuloocular reflex phase reversal adaptation, a behavior that
    has been suggested to rely on PF-PC\r\nLTP. We have found that on the last day
    of adaptation there is no learning trace in form of\r\nVGCCs nor AMPARs variation
    at the PF-PC synapse, but instead a decrease in the number of\r\nPF-PC synapses.
    These data seem to support the view that learning is only stored in the\r\ncerebellar
    cortex in an initial learning phase, being transferred later to the vestibular
    nuclei.\r\nNext, we have studied the role of MLIs in motor learning using a relatively
    simple and well characterized behavioral paradigm – horizontal optokinetic reflex
    (HOKR) adaptation. We\r\nhave found behavior-induced MLI potentiation in form
    of release probability increase that\r\ncould be explained by the increase of
    VGCCs at the presynaptic side. Our results strengthen\r\nthe idea of distributed
    cerebellar plasticity contributing to learning and provide a novel\r\nmechanism
    for release probability increase. "
acknowledged_ssus:
- _id: EM-Fac
- _id: Bio
- _id: PreCl
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Catarina
  full_name: Alcarva, Catarina
  id: 3A96634C-F248-11E8-B48F-1D18A9856A87
  last_name: Alcarva
citation:
  ama: 'Alcarva C. Plasticity in the cerebellum: What molecular mechanisms are behind
    physiological learning. 2023. doi:<a href="https://doi.org/10.15479/at:ista:12809">10.15479/at:ista:12809</a>'
  apa: 'Alcarva, C. (2023). <i>Plasticity in the cerebellum: What molecular mechanisms
    are behind physiological learning</i>. Institute of Science and Technology Austria.
    <a href="https://doi.org/10.15479/at:ista:12809">https://doi.org/10.15479/at:ista:12809</a>'
  chicago: 'Alcarva, Catarina. “Plasticity in the Cerebellum: What Molecular Mechanisms
    Are behind Physiological Learning.” Institute of Science and Technology Austria,
    2023. <a href="https://doi.org/10.15479/at:ista:12809">https://doi.org/10.15479/at:ista:12809</a>.'
  ieee: 'C. Alcarva, “Plasticity in the cerebellum: What molecular mechanisms are
    behind physiological learning,” Institute of Science and Technology Austria, 2023.'
  ista: 'Alcarva C. 2023. Plasticity in the cerebellum: What molecular mechanisms
    are behind physiological learning. Institute of Science and Technology Austria.'
  mla: 'Alcarva, Catarina. <i>Plasticity in the Cerebellum: What Molecular Mechanisms
    Are behind Physiological Learning</i>. Institute of Science and Technology Austria,
    2023, doi:<a href="https://doi.org/10.15479/at:ista:12809">10.15479/at:ista:12809</a>.'
  short: 'C. Alcarva, Plasticity in the Cerebellum: What Molecular Mechanisms Are
    behind Physiological Learning, Institute of Science and Technology Austria, 2023.'
corr_author: '1'
date_created: 2023-04-06T07:54:09Z
date_published: 2023-04-06T00:00:00Z
date_updated: 2026-04-07T13:53:28Z
day: '06'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: RySh
doi: 10.15479/at:ista:12809
file:
- access_level: open_access
  checksum: 35b5997d2b0acb461f9d33d073da0df5
  content_type: application/pdf
  creator: cchlebak
  date_created: 2023-04-07T06:16:06Z
  date_updated: 2024-04-08T22:30:03Z
  embargo: 2024-04-07
  file_id: '12814'
  file_name: Thesis_CatarinaAlcarva_final pdfA.pdf
  file_size: 9881969
  relation: main_file
- access_level: closed
  checksum: 81198f63c294890f6d58e8b29782efdc
  content_type: application/pdf
  creator: cchlebak
  date_created: 2023-04-07T06:17:11Z
  date_updated: 2024-04-08T22:30:03Z
  embargo_to: open_access
  file_id: '12815'
  file_name: Thesis_CatarinaAlcarva_final_for printing.pdf
  file_size: 44201583
  relation: source_file
- access_level: closed
  checksum: 0317bf7f457bb585f99d453ffa69eb53
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  creator: cchlebak
  date_created: 2023-04-07T06:18:05Z
  date_updated: 2024-04-08T22:30:03Z
  embargo_to: open_access
  file_id: '12816'
  file_name: Thesis_CatarinaAlcarva_final.docx
  file_size: 84731244
  relation: source_file
file_date_updated: 2024-04-08T22:30:03Z
has_accepted_license: '1'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: '115'
project:
- _id: 267DFB90-B435-11E9-9278-68D0E5697425
  name: 'Plasticity in the cerebellum: Which molecular mechanisms are behind physiological
    learning?'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
title: 'Plasticity in the cerebellum: What molecular mechanisms are behind physiological
  learning'
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
OA_place: publisher
_id: '14280'
abstract:
- lang: eng
  text: "Cell division in Escherichia coli is performed by the divisome, a multi-protein
    complex composed of more than 30 proteins. The divisome spans from the cytoplasm
    through the inner membrane to the cell wall and the outer membrane. Divisome assembly
    is initiated by a cytoskeletal structure, the so-called Z-ring, which localizes
    at the center of the E. coli cell and determines the position of the future cell
    septum. The Z-ring is composed of the highly conserved bacterial tubulin homologue
    FtsZ, which forms treadmilling filaments. These filaments are recruited to the
    inner membrane by FtsA, a highly conserved bacterial actin homologue. FtsA interacts
    with other proteins in the periplasm and thus connects the cytoplasmic and periplasmic
    components of the divisome. \r\nA previous model postulated that FtsA regulates
    maturation of the divisome by switching from an oligomeric, inactive state to
    a monomeric and active state. This model was based mostly on in vivo studies,
    as a biochemical characterization of FtsA has been hampered by difficulties in
    purifying the protein. Here, we studied FtsA using an in vitro reconstitution
    approach and aimed to answer two questions: (i) How are dynamics from cytoplasmic,
    treadmilling FtsZ filaments coupled to proteins acting in the periplasmic space
    and (ii) How does FtsA regulate the maturation of the divisome?\r\nWe found that
    the cytoplasmic peptides of the transmembrane proteins FtsN and FtsQ interact
    directly with FtsA and can follow the spatiotemporal signal of FtsA/Z filaments.
    When we investigated the underlying mechanism by imaging single molecules of FtsNcyto,
    we found the peptide to interact transiently with FtsA. An in depth analysis of
    the single molecule trajectories helped to postulate a model where PG synthases
    follow the dynamics of FtsZ by a diffusion and capture mechanism. \r\nFollowing
    up on these findings we were interested in how the self-interaction of FtsA changes
    when it encounters FtsNcyto and if we can confirm the proposed oligomer-monomer
    switch. For this, we compared the behavior of the previously identified, hyperactive
    mutant FtsA R286W with wildtype FtsA. The mutant outperforms WT in mirroring and
    transmitting the spatiotemporal signal of treadmilling FtsZ filaments. Surprisingly
    however, we found that this was not due to a difference in the self-interaction
    strength of the two variants, but a difference in their membrane residence time.
    Furthermore, in contrast to our expectations, upon binding of FtsNcyto the measured
    self-interaction of FtsA actually increased. \r\nWe propose that FtsNcyto induces
    a rearrangement of the oligomeric architecture of FtsA. In further consequence
    this change leads to more persistent FtsZ filaments which results in a defined
    signalling zone, allowing formation of the mature divisome. The observed difference
    between FtsA WT and R286W is due to the vastly different membrane turnover of
    the proteins. R286W cycles 5-10x faster compared to WT which allows to sample
    FtsZ filaments at faster frequencies. These findings can explain the observed
    differences in toxicity for overexpression of FtsA WT and R286W and help to understand
    how FtsA regulates divisome maturation."
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Philipp
  full_name: Radler, Philipp
  id: 40136C2A-F248-11E8-B48F-1D18A9856A87
  last_name: Radler
  orcid: '0000-0001-9198-2182 '
citation:
  ama: Radler P. Spatiotemporal signaling during assembly of the bacterial divisome.
    2023. doi:<a href="https://doi.org/10.15479/at:ista:14280">10.15479/at:ista:14280</a>
  apa: Radler, P. (2023). <i>Spatiotemporal signaling during assembly of the bacterial
    divisome</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:14280">https://doi.org/10.15479/at:ista:14280</a>
  chicago: Radler, Philipp. “Spatiotemporal Signaling during Assembly of the Bacterial
    Divisome.” Institute of Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:14280">https://doi.org/10.15479/at:ista:14280</a>.
  ieee: P. Radler, “Spatiotemporal signaling during assembly of the bacterial divisome,”
    Institute of Science and Technology Austria, 2023.
  ista: Radler P. 2023. Spatiotemporal signaling during assembly of the bacterial
    divisome. Institute of Science and Technology Austria.
  mla: Radler, Philipp. <i>Spatiotemporal Signaling during Assembly of the Bacterial
    Divisome</i>. Institute of Science and Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:14280">10.15479/at:ista:14280</a>.
  short: P. Radler, Spatiotemporal Signaling during Assembly of the Bacterial Divisome,
    Institute of Science and Technology Austria, 2023.
corr_author: '1'
date_created: 2023-09-06T10:58:25Z
date_published: 2023-09-25T00:00:00Z
date_updated: 2026-04-07T14:06:05Z
day: '25'
ddc:
- '572'
degree_awarded: PhD
department:
- _id: GradSch
- _id: MaLo
doi: 10.15479/at:ista:14280
ec_funded: 1
file:
- access_level: closed
  checksum: 87eef11fbc5c7df0826f12a3a629b444
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  creator: pradler
  date_created: 2023-10-04T10:11:53Z
  date_updated: 2024-10-05T22:30:03Z
  embargo_to: open_access
  file_id: '14390'
  file_name: PhD Thesis_Philipp Radler_20231004.docx
  file_size: 114932847
  relation: source_file
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  checksum: 3253e099b7126469d941fd9419d68b4f
  content_type: application/pdf
  creator: pradler
  date_created: 2023-10-04T10:11:21Z
  date_updated: 2024-10-05T22:30:03Z
  embargo: 2024-10-04
  file_id: '14391'
  file_name: PhD Thesis_Philipp Radler_20231004.pdf
  file_size: 37838778
  relation: main_file
file_date_updated: 2024-10-05T22:30:03Z
has_accepted_license: '1'
keyword:
- Cell Division
- Reconstitution
- FtsZ
- FtsA
- Divisome
- E.coli
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '156'
project:
- _id: 2595697A-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '679239'
  name: Self-Organization of the Bacterial Cell
- _id: fc38323b-9c52-11eb-aca3-ff8afb4a011d
  grant_number: P34607
  name: In vitro reconstitution of bacterial cell division
- _id: 2596EAB6-B435-11E9-9278-68D0E5697425
  grant_number: ALTF 2015-1163
  name: Synthesis of bacterial cell wall
- _id: 259B655A-B435-11E9-9278-68D0E5697425
  grant_number: LT000824/2016
  name: Reconstitution of bacterial cell wall synthesis
publication_identifier:
  isbn:
  - 978-3-99078-033-6
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '10934'
    relation: research_data
    status: public
  - id: '11373'
    relation: part_of_dissertation
    status: public
  - id: '7387'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Martin
  full_name: Loose, Martin
  id: 462D4284-F248-11E8-B48F-1D18A9856A87
  last_name: Loose
  orcid: 0000-0001-7309-9724
title: Spatiotemporal signaling during assembly of the bacterial divisome
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
_id: '12891'
abstract:
- lang: eng
  text: "The tight spatiotemporal coordination of signaling activity determining embryo\r\npatterning
    and the physical processes driving embryo morphogenesis renders\r\nembryonic development
    robust, such that key developmental processes can unfold\r\nrelatively normally
    even outside of the full embryonic context. For instance, embryonic\r\nstem cell
    cultures can recapitulate the hallmarks of gastrulation, i.e. break symmetry\r\nleading
    to germ layer formation and morphogenesis, in a very reduced environment.\r\nThis
    leads to questions on specific contributions of embryo-specific features, such
    as\r\nthe presence of extraembryonic tissues, which are inherently involved in
    gastrulation\r\nin the full embryonic context. To address this, we established
    zebrafish embryonic\r\nexplants without the extraembryonic yolk cell, an important
    player as a signaling\r\nsource and for morphogenesis during gastrulation, as
    a model of ex vivo development.\r\nWe found that dorsal-marginal determinants
    are required and sufficient in these\r\nexplants to form and pattern all three
    germ layers. However, formation of tissues,\r\nwhich require the highest Nodal-signaling
    levels, is variable, demonstrating a\r\ncontribution of extraembryonic tissues
    for reaching peak Nodal signaling levels.\r\nBlastoderm explants also undergo
    gastrulation-like axis elongation. We found that this\r\nelongation movement shows
    hallmarks of oriented mesendoderm cell intercalations\r\ntypically associated
    with dorsal tissues in the intact embryo. These are disrupted by\r\nuniform upregulation
    of BMP signaling activity and concomitant explant ventralization,\r\nsuggesting
    that tight spatial control of BMP signaling is a prerequisite for explant\r\nmorphogenesis.
    This control is achieved by Nodal signaling, which is critical for\r\neffectively
    downregulating BMP signaling in the mesendoderm, highlighting that Nodal\r\nsignaling
    is not only directly required for mesendoderm cell fate specification and\r\nmorphogenesis,
    but also by maintaining low levels of BMP signaling at the dorsal side.\r\nCollectively,
    we provide insights into the capacity and organization of signaling and\r\nmorphogenetic
    domains to recapitulate features of zebrafish gastrulation outside of\r\nthe full
    embryonic context."
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Alexandra
  full_name: Schauer, Alexandra
  id: 30A536BA-F248-11E8-B48F-1D18A9856A87
  last_name: Schauer
  orcid: 0000-0001-7659-9142
citation:
  ama: 'Schauer A. Mesendoderm formation in zebrafish gastrulation: The role of extraembryonic
    tissues. 2023. doi:<a href="https://doi.org/10.15479/at:ista:12891">10.15479/at:ista:12891</a>'
  apa: 'Schauer, A. (2023). <i>Mesendoderm formation in zebrafish gastrulation: The
    role of extraembryonic tissues</i>. Institute of Science and Technology Austria.
    <a href="https://doi.org/10.15479/at:ista:12891">https://doi.org/10.15479/at:ista:12891</a>'
  chicago: 'Schauer, Alexandra. “Mesendoderm Formation in Zebrafish Gastrulation:
    The Role of Extraembryonic Tissues.” Institute of Science and Technology Austria,
    2023. <a href="https://doi.org/10.15479/at:ista:12891">https://doi.org/10.15479/at:ista:12891</a>.'
  ieee: 'A. Schauer, “Mesendoderm formation in zebrafish gastrulation: The role of
    extraembryonic tissues,” Institute of Science and Technology Austria, 2023.'
  ista: 'Schauer A. 2023. Mesendoderm formation in zebrafish gastrulation: The role
    of extraembryonic tissues. Institute of Science and Technology Austria.'
  mla: 'Schauer, Alexandra. <i>Mesendoderm Formation in Zebrafish Gastrulation: The
    Role of Extraembryonic Tissues</i>. Institute of Science and Technology Austria,
    2023, doi:<a href="https://doi.org/10.15479/at:ista:12891">10.15479/at:ista:12891</a>.'
  short: 'A. Schauer, Mesendoderm Formation in Zebrafish Gastrulation: The Role of
    Extraembryonic Tissues, Institute of Science and Technology Austria, 2023.'
corr_author: '1'
date_created: 2023-05-05T08:48:20Z
date_published: 2023-05-05T00:00:00Z
date_updated: 2025-06-12T06:56:58Z
day: '05'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: CaHe
doi: 10.15479/at:ista:12891
ec_funded: 1
file:
- access_level: open_access
  checksum: 59b0303dc483f40a96a610a90aab7ee9
  content_type: application/pdf
  creator: aschauer
  date_created: 2023-05-05T13:01:14Z
  date_updated: 2024-05-06T22:30:03Z
  embargo: 2024-05-05
  file_id: '12907'
  file_name: Thesis_Schauer_final.pdf
  file_size: 31434230
  relation: main_file
- access_level: closed
  checksum: 25f54e12479b6adaabd129a20568e6c1
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  creator: aschauer
  date_created: 2023-05-05T13:04:15Z
  date_updated: 2024-05-06T22:30:03Z
  embargo_to: open_access
  file_id: '12908'
  file_name: Thesis_Schauer_final.docx
  file_size: 43809109
  relation: source_file
file_date_updated: 2024-05-06T22:30:03Z
has_accepted_license: '1'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '190'
project:
- _id: 260F1432-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '742573'
  name: Interaction and feedback between cell mechanics and fate specification in
    vertebrate gastrulation
- _id: 26B1E39C-B435-11E9-9278-68D0E5697425
  grant_number: '25239'
  name: 'Mesendoderm specification in zebrafish: The role of extraembryonic tissues'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '7888'
    relation: part_of_dissertation
    status: public
  - id: '8966'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Carl-Philipp J
  full_name: Heisenberg, Carl-Philipp J
  id: 39427864-F248-11E8-B48F-1D18A9856A87
  last_name: Heisenberg
  orcid: 0000-0002-0912-4566
title: 'Mesendoderm formation in zebrafish gastrulation: The role of extraembryonic
  tissues'
type: dissertation
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
OA_place: publisher
_id: '14697'
abstract:
- lang: eng
  text: "During my Ph.D. research, I managed a series of projects, each focused on
    the\r\nmechanisms underlying cell migration. My work involved an in-depth examination
    of\r\nthe complex strategies employed by neutrophils, with a specific focus on
    their ability to\r\nsynchronize spatial-temporal cues and optimize their gradient
    perception. However, it\r\nis essential to acknowledge that not all projects yielded
    successful results, as some\r\nideas were discontinued and are archived for future
    reference within this thesis.\r\nMy main project investigated how neutrophils
    decode spatial cues for precise navigation. Human neutrophils showcased distinct
    movement patterns based on source\r\ntype – linear or point-like. By combining
    single-cell tracking in 3D environments with\r\nproxy dyes, this project linked
    cell behaviors to gradient changes, revealing a stronger\r\nresponse to semi-exponential
    gradients from point sources. In addition, neutrophils\r\nexhibited oscillating
    migration speeds, using speed minima to adjust trajectories toward sources. Experiencing
    continuous concentration changes, they accelerated over\r\ntime and employed a
    \"Run and Fumble\" strategy, alternating between consistent runs\r\nand strategic
    \"tumbles\" for efficient navigation.\r\nThe project extended to the possibility
    of cells amplifying perceived gradients by\r\nenclosing their immediate surroundings,
    pushing attractants forward for enrichment\r\nwhile depleting it at the cell rear.
    Microfluidic devices were employed, and various experimental parameters configurations
    were optimized. Although significant differences\r\nin migratory efficacy were
    detected across pore sizes and device heights, quantifying\r\ngradient manipulation
    effects proved challenging.\r\nThe \"Laser-Assisted Protein Adsorption by Photobleaching\"
    (LAPAP) project was\r\npromising, as it allowed the printing of gradients. Initially
    successful with dendritic cells,\r\nwe aimed to adapt it for neutrophils. Through
    extensive experimentation with multiple\r\nparameters, we attempted to trigger
    responses from neutrophils. Despite these efforts\r\nand collaboration, the project
    failed due to practical challenges and limitations.\r\nFacing a lack of neutrophil-like
    cells at IST, we initially established the SCF-HoxB8\r\nprimary murine cell line.
    Despite their existence, their migratory behavior was largely\r\nunexplored due
    to potential limitations. Through differentiation protocol refinements we\r\nenhanced
    their migratory capabilities, though their capacity still lagged behind human\r\nneutrophils.
    Despite this, the improved migration potential of these cells pointed toward\r\ntheir
    utility for in vitro murine neutrophil migration studies."
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Julian A
  full_name: Stopp, Julian A
  id: 489E3F00-F248-11E8-B48F-1D18A9856A87
  last_name: Stopp
citation:
  ama: 'Stopp JA. Neutrophils on the hunt : Migratory strategies employed by neutrophils
    to fulfill their effector function. 2023. doi:<a href="https://doi.org/10.15479/at:ista:14697">10.15479/at:ista:14697</a>'
  apa: 'Stopp, J. A. (2023). <i>Neutrophils on the hunt : Migratory strategies employed
    by neutrophils to fulfill their effector function</i>. Institute of Science and
    Technology Austria. <a href="https://doi.org/10.15479/at:ista:14697">https://doi.org/10.15479/at:ista:14697</a>'
  chicago: 'Stopp, Julian A. “Neutrophils on the Hunt : Migratory Strategies Employed
    by Neutrophils to Fulfill Their Effector Function.” Institute of Science and Technology
    Austria, 2023. <a href="https://doi.org/10.15479/at:ista:14697">https://doi.org/10.15479/at:ista:14697</a>.'
  ieee: 'J. A. Stopp, “Neutrophils on the hunt : Migratory strategies employed by
    neutrophils to fulfill their effector function,” Institute of Science and Technology
    Austria, 2023.'
  ista: 'Stopp JA. 2023. Neutrophils on the hunt : Migratory strategies employed by
    neutrophils to fulfill their effector function. Institute of Science and Technology
    Austria.'
  mla: 'Stopp, Julian A. <i>Neutrophils on the Hunt : Migratory Strategies Employed
    by Neutrophils to Fulfill Their Effector Function</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:14697">10.15479/at:ista:14697</a>.'
  short: 'J.A. Stopp, Neutrophils on the Hunt : Migratory Strategies Employed by Neutrophils
    to Fulfill Their Effector Function, Institute of Science and Technology Austria,
    2023.'
corr_author: '1'
date_created: 2023-12-18T19:14:28Z
date_published: 2023-12-20T00:00:00Z
date_updated: 2026-06-18T17:34:48Z
day: '20'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: MiSi
doi: 10.15479/at:ista:14697
ec_funded: 1
file:
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language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: '226'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication_identifier:
  isbn:
  - 978-3-99078-038-1
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '14360'
    relation: part_of_dissertation
    status: public
  - id: '12272'
    relation: part_of_dissertation
    status: public
  - id: '6328'
    relation: part_of_dissertation
    status: public
  - id: '7885'
    relation: part_of_dissertation
    status: public
  - id: '14274'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Michael K
  full_name: Sixt, Michael K
  id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
  last_name: Sixt
  orcid: 0000-0002-6620-9179
title: 'Neutrophils on the hunt : Migratory strategies employed by neutrophils to
  fulfill their effector function'
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
OA_place: publisher
_id: '13081'
abstract:
- lang: eng
  text: During development, tissues undergo changes in size and shape to form functional
    organs. Distinct cellular processes such as cell division and cell rearrangements
    underlie tissue morphogenesis. Yet how the distinct processes are controlled and
    coordinated, and how they contribute to morphogenesis is poorly understood. In
    our study, we addressed these questions using the developing mouse neural tube.
    This epithelial organ transforms from a flat epithelial sheet to an epithelial
    tube while increasing in size and undergoing morpho-gen-mediated patterning. The
    extent and mechanism of neural progenitor rearrangement within the developing
    mouse neuroepithelium is unknown. To investigate this, we per-formed high resolution
    lineage tracing analysis to quantify the extent of epithelial rear-rangement at
    different stages of neural tube development. We quantitatively described the relationship
    between apical cell size with cell cycle dependent interkinetic nuclear migra-tions
    (IKNM) and performed high cellular resolution live imaging of the neuroepithelium
    to study the dynamics of junctional remodeling.  Furthermore, developed a vertex
    model of the neuroepithelium to investigate the quantitative contribution of cell
    proliferation, cell differentiation and mechanical properties to the epithelial
    rearrangement dynamics and validated the model predictions through functional
    experiments. Our analysis revealed that at early developmental stages, the apical
    cell area kinetics driven by IKNM induce high lev-els of cell rearrangements in
    a regime of high junctional tension and contractility. After E9.5, there is a
    sharp decline in the extent of cell rearrangements, suggesting that the epi-thelium
    transitions from a fluid-like to a solid-like state. We found that this transition
    is regulated by the growth rate of the tissue, rather than by changes in cell-cell
    adhesion and contractile forces. Overall, our study provides a quantitative description
    of the relationship between tissue growth, cell cycle dynamics, epithelia rearrangements
    and the emergent tissue material properties, and novel insights on how epithelial
    cell dynamics influences tissue morphogenesis.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Laura
  full_name: Bocanegra, Laura
  id: 4896F754-F248-11E8-B48F-1D18A9856A87
  last_name: Bocanegra
citation:
  ama: Bocanegra L. Epithelial dynamics during mouse neural tube development. 2023.
    doi:<a href="https://doi.org/10.15479/at:ista:13081">10.15479/at:ista:13081</a>
  apa: Bocanegra, L. (2023). <i>Epithelial dynamics during mouse neural tube development</i>.
    Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:13081">https://doi.org/10.15479/at:ista:13081</a>
  chicago: Bocanegra, Laura. “Epithelial Dynamics during Mouse Neural Tube Development.”
    Institute of Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:13081">https://doi.org/10.15479/at:ista:13081</a>.
  ieee: L. Bocanegra, “Epithelial dynamics during mouse neural tube development,”
    Institute of Science and Technology Austria, 2023.
  ista: Bocanegra L. 2023. Epithelial dynamics during mouse neural tube development.
    Institute of Science and Technology Austria.
  mla: Bocanegra, Laura. <i>Epithelial Dynamics during Mouse Neural Tube Development</i>.
    Institute of Science and Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:13081">10.15479/at:ista:13081</a>.
  short: L. Bocanegra, Epithelial Dynamics during Mouse Neural Tube Development, Institute
    of Science and Technology Austria, 2023.
corr_author: '1'
date_created: 2023-05-23T19:10:42Z
date_published: 2023-05-23T00:00:00Z
date_updated: 2026-04-14T09:50:54Z
day: '23'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: AnKi
doi: 10.15479/at:ista:13081
file:
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  checksum: 74f3f89e59a0189bee53ebfad9c1b9af
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  date_created: 2023-05-25T06:32:12Z
  date_updated: 2024-06-01T22:30:04Z
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  file_name: Thesis_final_LauraBocanegra.docx
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  date_created: 2023-05-25T06:32:16Z
  date_updated: 2024-06-01T22:30:04Z
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  file_name: TotalFinal_Thesis_LauraBocanegraArx.pdf
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file_date_updated: 2024-06-01T22:30:04Z
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language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '93'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '9349'
    relation: part_of_dissertation
    status: public
  - id: '12837'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Anna
  full_name: Kicheva, Anna
  id: 3959A2A0-F248-11E8-B48F-1D18A9856A87
  last_name: Kicheva
  orcid: 0000-0003-4509-4998
title: Epithelial dynamics during mouse neural tube development
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  image: /images/cc_by_nc_nd.png
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  short: CC BY-NC-ND (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
OA_place: publisher
_id: '14323'
abstract:
- lang: eng
  text: Morphogens are signaling molecules that are known for their prominent role
    in pattern formation within developing tissues. In addition to patterning, morphogens
    also control tissue growth. However, the underlying mechanisms are poorly understood.
    We studied the role of morphogens in regulating tissue growth in the developing
    vertebrate neural tube. In this system, opposing morphogen gradients of Shh and
    BMP establish the dorsoventral pattern of neural progenitor domains. Perturbations
    in these morphogen pathways result in alterations in tissue growth and cell cycle
    progression, however, it has been unclear what cellular process is affected. To
    address this, we analysed the rates of cell proliferation and cell death in mouse
    mutants in which signaling is perturbed, as well as in chick neural plate explants
    exposed to defined concentrations of signaling activators or inhibitors. Our results
    indicated that the rate of cell proliferation was not altered in these assays.
    By contrast, both the Shh and BMP signaling pathways had profound effects on neural
    progenitor survival. Our results indicate that these pathways synergise to promote
    cell survival within neural progenitors. Consistent with this, we found that progenitors
    within the intermediate region of the neural tube, where the combined levels of
    Shh and BMP are the lowest, are most prone to cell death when signaling activity
    is inhibited. In addition, we found that downregulation of Shh results in increased
    apoptosis within the roof plate, which is the dorsal source of BMP ligand production.
    This revealed a cross-interaction between the Shh and BMP morphogen signaling
    pathways that may be relevant for understanding how gradients scale in neural
    tubes with different overall sizes. We further studied the mechanism acting downstream
    of Shh in cell survival regulation using genetic and genomic approaches. We propose
    that Shh transcriptionally regulates a non-canonical apoptotic pathway. Altogether,
    our study points to a novel role of opposing morphogen gradients in tissue size
    regulation and provides new insights into complex interactions between Shh and
    BMP signaling gradients in the neural tube.
acknowledged_ssus:
- _id: Bio
- _id: PreCl
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Katarzyna
  full_name: Kuzmicz-Kowalska, Katarzyna
  id: 4CED352A-F248-11E8-B48F-1D18A9856A87
  last_name: Kuzmicz-Kowalska
citation:
  ama: Kuzmicz-Kowalska K. Regulation of neural progenitor survival by Shh and BMP
    in the developing spinal cord. 2023. doi:<a href="https://doi.org/10.15479/at:ista:14323">10.15479/at:ista:14323</a>
  apa: Kuzmicz-Kowalska, K. (2023). <i>Regulation of neural progenitor survival by
    Shh and BMP in the developing spinal cord</i>. Institute of Science and Technology
    Austria. <a href="https://doi.org/10.15479/at:ista:14323">https://doi.org/10.15479/at:ista:14323</a>
  chicago: Kuzmicz-Kowalska, Katarzyna. “Regulation of Neural Progenitor Survival
    by Shh and BMP in the Developing Spinal Cord.” Institute of Science and Technology
    Austria, 2023. <a href="https://doi.org/10.15479/at:ista:14323">https://doi.org/10.15479/at:ista:14323</a>.
  ieee: K. Kuzmicz-Kowalska, “Regulation of neural progenitor survival by Shh and
    BMP in the developing spinal cord,” Institute of Science and Technology Austria,
    2023.
  ista: Kuzmicz-Kowalska K. 2023. Regulation of neural progenitor survival by Shh
    and BMP in the developing spinal cord. Institute of Science and Technology Austria.
  mla: Kuzmicz-Kowalska, Katarzyna. <i>Regulation of Neural Progenitor Survival by
    Shh and BMP in the Developing Spinal Cord</i>. Institute of Science and Technology
    Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:14323">10.15479/at:ista:14323</a>.
  short: K. Kuzmicz-Kowalska, Regulation of Neural Progenitor Survival by Shh and
    BMP in the Developing Spinal Cord, Institute of Science and Technology Austria,
    2023.
corr_author: '1'
date_created: 2023-09-13T10:07:18Z
date_published: 2023-09-13T00:00:00Z
date_updated: 2026-04-14T09:50:54Z
day: '13'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: AnKi
doi: 10.15479/at:ista:14323
file:
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  checksum: bd83596869c814b24aeff7077d031c0e
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  creator: kkuzmicz
  date_created: 2023-09-13T09:52:52Z
  date_updated: 2025-03-13T23:30:05Z
  embargo: 2025-03-13
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file_date_updated: 2025-03-13T23:30:05Z
has_accepted_license: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '151'
project:
- _id: 267AF0E4-B435-11E9-9278-68D0E5697425
  name: The role of morphogens in the regulation of neural tube growth
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '7883'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Anna
  full_name: Kicheva, Anna
  id: 3959A2A0-F248-11E8-B48F-1D18A9856A87
  last_name: Kicheva
  orcid: 0000-0003-4509-4998
title: Regulation of neural progenitor survival by Shh and BMP in the developing spinal
  cord
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
_id: '12349'
abstract:
- lang: eng
  text: Statistics of natural scenes are not uniform - their structure varies dramatically
    from ground to sky. It remains unknown whether these non-uniformities are reflected
    in the large-scale organization of the early visual system and what benefits such
    adaptations would confer. Here, by relying on the efficient coding hypothesis,
    we predict that changes in the structure of receptive fields across visual space
    increase the efficiency of sensory coding. We show experimentally that, in agreement
    with our predictions, receptive fields of retinal ganglion cells change their
    shape along the dorsoventral retinal axis, with a marked surround asymmetry at
    the visual horizon. Our work demonstrates that, according to principles of efficient
    coding, the panoramic structure of natural scenes is exploited by the retina across
    space and cell-types.
acknowledged_ssus:
- _id: ScienComp
- _id: PreCl
- _id: LifeSc
- _id: Bio
acknowledgement: We thank Hiroki Asari for sharing the dataset of naturalistic images,
  Anton Sumser for sharing visual stimulus code, Yoav Ben Simon for initial explorative
  work with the generation of AAVs, and Tomas Vega-Zuñiga for help with immunostainings.
  We also thank Gasper Tkacik and members of the Neuroethology group for their comments
  on the manuscript. This research was supported by the Scientific Service Units of
  IST Austria through resources provided by Scientific Computing, the Preclinical
  Facility, the Lab Support Facility, and the Imaging and Optics Facility. This work
  was supported by European Union Horizon 2020 Marie Skłodowska-Curie grant 665385
  (DG), Austrian Science Fund (FWF) stand-alone grant P 34015 (WM), Human Frontiers
  Science Program LT000256/2018-L (AS), EMBO ALTF 1098-2017 (AS) and the European
  Research Council Starting Grant 756502 (MJ).
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Divyansh
  full_name: Gupta, Divyansh
  id: 2A485EBE-F248-11E8-B48F-1D18A9856A87
  last_name: Gupta
  orcid: 0000-0001-7400-6665
- first_name: Wiktor F
  full_name: Mlynarski, Wiktor F
  id: 358A453A-F248-11E8-B48F-1D18A9856A87
  last_name: Mlynarski
- first_name: Anton L
  full_name: Sumser, Anton L
  id: 3320A096-F248-11E8-B48F-1D18A9856A87
  last_name: Sumser
  orcid: 0000-0002-4792-1881
- first_name: Olga
  full_name: Symonova, Olga
  id: 3C0C7BC6-F248-11E8-B48F-1D18A9856A87
  last_name: Symonova
  orcid: 0000-0003-2012-9947
- first_name: Jan
  full_name: Svaton, Jan
  id: f7f724c3-9d6f-11ed-9f44-e5c5f3a5bee2
  last_name: Svaton
  orcid: 0000-0002-6198-2939
- first_name: Maximilian A
  full_name: Jösch, Maximilian A
  id: 2BD278E6-F248-11E8-B48F-1D18A9856A87
  last_name: Jösch
  orcid: 0000-0002-3937-1330
citation:
  ama: Gupta D, Mlynarski WF, Sumser AL, Symonova O, Svaton J, Jösch MA. Panoramic
    visual statistics shape retina-wide organization of receptive fields. <i>Nature
    Neuroscience</i>. 2023;26:606-614. doi:<a href="https://doi.org/10.1038/s41593-023-01280-0">10.1038/s41593-023-01280-0</a>
  apa: Gupta, D., Mlynarski, W. F., Sumser, A. L., Symonova, O., Svaton, J., &#38;
    Jösch, M. A. (2023). Panoramic visual statistics shape retina-wide organization
    of receptive fields. <i>Nature Neuroscience</i>. Springer Nature. <a href="https://doi.org/10.1038/s41593-023-01280-0">https://doi.org/10.1038/s41593-023-01280-0</a>
  chicago: Gupta, Divyansh, Wiktor F Mlynarski, Anton L Sumser, Olga Symonova, Jan
    Svaton, and Maximilian A Jösch. “Panoramic Visual Statistics Shape Retina-Wide
    Organization of Receptive Fields.” <i>Nature Neuroscience</i>. Springer Nature,
    2023. <a href="https://doi.org/10.1038/s41593-023-01280-0">https://doi.org/10.1038/s41593-023-01280-0</a>.
  ieee: D. Gupta, W. F. Mlynarski, A. L. Sumser, O. Symonova, J. Svaton, and M. A.
    Jösch, “Panoramic visual statistics shape retina-wide organization of receptive
    fields,” <i>Nature Neuroscience</i>, vol. 26. Springer Nature, pp. 606–614, 2023.
  ista: Gupta D, Mlynarski WF, Sumser AL, Symonova O, Svaton J, Jösch MA. 2023. Panoramic
    visual statistics shape retina-wide organization of receptive fields. Nature Neuroscience.
    26, 606–614.
  mla: Gupta, Divyansh, et al. “Panoramic Visual Statistics Shape Retina-Wide Organization
    of Receptive Fields.” <i>Nature Neuroscience</i>, vol. 26, Springer Nature, 2023,
    pp. 606–14, doi:<a href="https://doi.org/10.1038/s41593-023-01280-0">10.1038/s41593-023-01280-0</a>.
  short: D. Gupta, W.F. Mlynarski, A.L. Sumser, O. Symonova, J. Svaton, M.A. Jösch,
    Nature Neuroscience 26 (2023) 606–614.
corr_author: '1'
date_created: 2023-01-23T14:14:19Z
date_published: 2023-04-01T00:00:00Z
date_updated: 2026-09-04T22:30:34Z
day: '01'
ddc:
- '570'
department:
- _id: GradSch
- _id: MaJö
doi: 10.1038/s41593-023-01280-0
ec_funded: 1
external_id:
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pmid: 1
project:
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  name: International IST Doctoral Program
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publication: Nature Neuroscience
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  - 1097-6256
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
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status: public
title: Panoramic visual statistics shape retina-wide organization of receptive fields
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 26
year: '2023'
...
---
_id: '12370'
abstract:
- lang: eng
  text: 'Statistics of natural scenes are not uniform - their structure varies dramatically
    from ground to sky. It remains unknown whether these non-uniformities are reflected
    in the large-scale organization of the early visual system and what benefits such
    adaptations would confer. Here, by relying on the efficient coding hypothesis,
    we predict that changes in the structure of receptive fields across visual space
    increase the efficiency of sensory coding. We show experimentally that, in agreement
    with our predictions, receptive fields of retinal ganglion cells change their
    shape along the dorsoventral retinal axis, with a marked surround asymmetry at
    the visual horizon. Our work demonstrates that, according to principles of efficient
    coding, the panoramic structure of natural scenes is exploited by the retina across
    space and cell-types. '
acknowledged_ssus:
- _id: ScienComp
- _id: M-Shop
- _id: Bio
- _id: PreCl
- _id: LifeSc
article_processing_charge: No
author:
- first_name: Divyansh
  full_name: Gupta, Divyansh
  id: 2A485EBE-F248-11E8-B48F-1D18A9856A87
  last_name: Gupta
  orcid: 0000-0001-7400-6665
- first_name: Anton L
  full_name: Sumser, Anton L
  id: 3320A096-F248-11E8-B48F-1D18A9856A87
  last_name: Sumser
  orcid: 0000-0002-4792-1881
- first_name: Maximilian A
  full_name: Jösch, Maximilian A
  id: 2BD278E6-F248-11E8-B48F-1D18A9856A87
  last_name: Jösch
  orcid: 0000-0002-3937-1330
citation:
  ama: 'Gupta D, Sumser AL, Jösch MA. Research Data for: Panoramic visual statistics
    shape retina-wide organization of receptive fields. 2023. doi:<a href="https://doi.org/10.15479/AT:ISTA:12370">10.15479/AT:ISTA:12370</a>'
  apa: 'Gupta, D., Sumser, A. L., &#38; Jösch, M. A. (2023). Research Data for: Panoramic
    visual statistics shape retina-wide organization of receptive fields. Institute
    of Science and Technology Austria. <a href="https://doi.org/10.15479/AT:ISTA:12370">https://doi.org/10.15479/AT:ISTA:12370</a>'
  chicago: 'Gupta, Divyansh, Anton L Sumser, and Maximilian A Jösch. “Research Data
    for: Panoramic Visual Statistics Shape Retina-Wide Organization of Receptive Fields.”
    Institute of Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/AT:ISTA:12370">https://doi.org/10.15479/AT:ISTA:12370</a>.'
  ieee: 'D. Gupta, A. L. Sumser, and M. A. Jösch, “Research Data for: Panoramic visual
    statistics shape retina-wide organization of receptive fields.” Institute of Science
    and Technology Austria, 2023.'
  ista: 'Gupta D, Sumser AL, Jösch MA. 2023. Research Data for: Panoramic visual statistics
    shape retina-wide organization of receptive fields, Institute of Science and Technology
    Austria, <a href="https://doi.org/10.15479/AT:ISTA:12370">10.15479/AT:ISTA:12370</a>.'
  mla: 'Gupta, Divyansh, et al. <i>Research Data for: Panoramic Visual Statistics
    Shape Retina-Wide Organization of Receptive Fields</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/AT:ISTA:12370">10.15479/AT:ISTA:12370</a>.'
  short: D. Gupta, A.L. Sumser, M.A. Jösch, (2023).
contributor:
- contributor_type: researcher
  first_name: Olga
  id: 3C0C7BC6-F248-11E8-B48F-1D18A9856A87
  last_name: Symonova
- contributor_type: researcher
  first_name: Wiktor F
  id: 358A453A-F248-11E8-B48F-1D18A9856A87
  last_name: Mlynarski
- contributor_type: researcher
  first_name: Jan
  id: f7f724c3-9d6f-11ed-9f44-e5c5f3a5bee2
  last_name: Svaton
corr_author: '1'
date_created: 2023-01-25T12:45:18Z
date_published: 2023-01-26T00:00:00Z
date_updated: 2026-09-04T22:30:34Z
day: '26'
ddc:
- '571'
department:
- _id: GradSch
- _id: MaJö
doi: 10.15479/AT:ISTA:12370
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  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
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status: public
title: 'Research Data for: Panoramic visual statistics shape retina-wide organization
  of receptive fields'
tmp:
  image: /images/cc_by_nc_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
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type: research_data
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
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...
---
OA_place: publisher
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abstract:
- lang: eng
  text: "Clathrin-mediated endocytosis (CME) is vital for the regulation of plant
    growth and\r\ndevelopment by controlling plasma membrane protein composition and
    cargo uptake. CME\r\nrelies on the precise recruitment control of protein regulators
    for vesicle maturation and\r\nrelease. During the early stages of endocytosis,
    an area of flat membrane is remodelled by\r\nproteins to create a spherical vesicle
    against intracellular forces. After the Clathrin-coated\r\nvesicle (CCV) is fully
    formed, scission machinery releases it from the plasma membrane,\r\nand cargo
    proceeds for recycling or degradation through early endosomes / Trans Golgi\r\nnetwork.
    Protein machineries that mediate membrane bending and vesicle release in plants\r\nare
    unknown. However, studies show, that plant endocytosis is actin independent, thus\r\nindicating
    that plants utilize a unique mechanism to mediate membrane bending against highturgor
    pressure compared to other model systems. First, by using biochemical and advanced\r\nlive
    microscopy approaches we investigate the TPLATE complex, a plant-specific\r\nendocytosis
    protein complex. We found that TPLATE is peripherally associated with\r\nclathrin-coated
    vesicles and localises at the rim of endocytosis events. Next, our study of\r\nplant
    Dynamin-related protein 1C (DRP1C), which was hypothesised previously to play
    a\r\nrole in vesicle release, shows the recruitment of the protein already at
    the early stages of\r\nendocytosis. Moreover, DRP1C assembles into organised ring-like
    structures and is able to\r\ninduce membrane deformation and tubulation, suggesting
    its role also in membrane bending\r\nduring early CME. Based on the data from
    mammalian and yeast systems, plant DynaminRelated Proteins 2 and SH3P2 protein
    are strong candidates to be part of the plant vesicle\r\nscission machinery; however,
    their precise role in plant CME has not been yet elucidated.\r\nHere, we characterised
    DRP2s and SH3P2 roles in CME by combining high-resolution\r\nimaging of endocytic
    events in vivo and protein characterisation. Although DRP2s and\r\nSH3P2 arrive
    together during late CME and physically interact, genetic analysis using\r\n∆sh3p1,2,3
    mutant and complementation with non-DRP2-interacting SH3P2 variants suggest\r\nthat
    SH3P2 does not directly recruit DRP2s to the site of endocytosis. Summarising
    our\r\nresearch, these observations provide new important insights into the mechanism
    of plant\r\nCME and show that, despite plants posses many homologues of mammalian
    and yeast CME\r\ncomponents, they do not necessarily act in the same manner. "
acknowledged_ssus:
- _id: EM-Fac
- _id: Bio
- _id: LifeSc
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Nataliia
  full_name: Gnyliukh, Nataliia
  id: 390C1120-F248-11E8-B48F-1D18A9856A87
  last_name: Gnyliukh
  orcid: 0000-0002-2198-0509
citation:
  ama: Gnyliukh N. Mechanism of clathrin-coated vesicle  formation during endocytosis
    in plants. 2023. doi:<a href="https://doi.org/10.15479/at:ista:14510">10.15479/at:ista:14510</a>
  apa: Gnyliukh, N. (2023). <i>Mechanism of clathrin-coated vesicle  formation during
    endocytosis in plants</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:14510">https://doi.org/10.15479/at:ista:14510</a>
  chicago: Gnyliukh, Nataliia. “Mechanism of Clathrin-Coated Vesicle  Formation during
    Endocytosis in Plants.” Institute of Science and Technology Austria, 2023. <a
    href="https://doi.org/10.15479/at:ista:14510">https://doi.org/10.15479/at:ista:14510</a>.
  ieee: N. Gnyliukh, “Mechanism of clathrin-coated vesicle  formation during endocytosis
    in plants,” Institute of Science and Technology Austria, 2023.
  ista: Gnyliukh N. 2023. Mechanism of clathrin-coated vesicle  formation during endocytosis
    in plants. Institute of Science and Technology Austria.
  mla: Gnyliukh, Nataliia. <i>Mechanism of Clathrin-Coated Vesicle  Formation during
    Endocytosis in Plants</i>. Institute of Science and Technology Austria, 2023,
    doi:<a href="https://doi.org/10.15479/at:ista:14510">10.15479/at:ista:14510</a>.
  short: N. Gnyliukh, Mechanism of Clathrin-Coated Vesicle  Formation during Endocytosis
    in Plants, Institute of Science and Technology Austria, 2023.
corr_author: '1'
date_created: 2023-11-10T09:10:06Z
date_published: 2023-11-10T00:00:00Z
date_updated: 2026-09-04T22:30:56Z
day: '10'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JiFr
- _id: MaLo
doi: 10.15479/at:ista:14510
ec_funded: 1
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file_date_updated: 2024-11-23T23:30:38Z
has_accepted_license: '1'
keyword:
- Clathrin-Mediated Endocytosis
- vesicle scission
- Dynamin-Related Protein 2
- SH3P2
- TPLATE complex
- Total internal reflection fluorescence microscopy
- Arabidopsis thaliana
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: '180'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication_identifier:
  isbn:
  - 978-3-99078-037-4
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
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status: public
supervisor:
- first_name: Jiří
  full_name: Friml, Jiří
  id: 4159519E-F248-11E8-B48F-1D18A9856A87
  last_name: Friml
  orcid: 0000-0002-8302-7596
- first_name: Martin
  full_name: Loose, Martin
  id: 462D4284-F248-11E8-B48F-1D18A9856A87
  last_name: Loose
  orcid: 0000-0001-7309-9724
title: Mechanism of clathrin-coated vesicle  formation during endocytosis in plants
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
OA_place: repository
_id: '14591'
abstract:
- lang: eng
  text: Clathrin-mediated endocytosis (CME) is vital for the regulation of plant growth
    and development by controlling plasma membrane protein composition and cargo uptake.
    CME relies on the precise recruitment of regulators for vesicle maturation and
    release. Homologues of components of mammalian vesicle scission are strong candidates
    to be part of the scissin machinery in plants, but the precise roles of these
    proteins in this process is not fully understood. Here, we characterised the roles
    of Plant Dynamin-Related Proteins 2 (DRP2s) and SH3-domain containing protein
    2 (SH3P2), the plant homologue to Dynamins’ recruiters, like Endophilin and Amphiphysin,
    in the CME by combining high-resolution imaging of endocytic events in vivo and
    characterisation of the purified proteins in vitro. Although DRP2s and SH3P2 arrive
    similarly late during CME and physically interact, genetic analysis of the Dsh3p1,2,3
    triple-mutant and complementation assays with non-SH3P2-interacting DRP2 variants
    suggests that SH3P2 does not directly recruit DRP2s to the site of endocytosis.
    These observations imply that despite the presence of many well-conserved endocytic
    components, plants have acquired a distinct mechanism for CME. One Sentence Summary
    In contrast to predictions based on mammalian systems, plant Dynamin-related proteins
    2 are recruited to the site of Clathrin-mediated endocytosis independently of
    BAR-SH3 proteins.
acknowledged_ssus:
- _id: EM-Fac
- _id: LifeSc
- _id: Bio
article_processing_charge: No
author:
- first_name: Nataliia
  full_name: Gnyliukh, Nataliia
  id: 390C1120-F248-11E8-B48F-1D18A9856A87
  last_name: Gnyliukh
  orcid: 0000-0002-2198-0509
- first_name: Alexander J
  full_name: Johnson, Alexander J
  id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
  last_name: Johnson
  orcid: 0000-0002-2739-8843
- first_name: Marie-Kristin
  full_name: Nagel, Marie-Kristin
  last_name: Nagel
- first_name: Aline
  full_name: Monzer, Aline
  id: 2DB5D88C-D7B3-11E9-B8FD-7907E6697425
  last_name: Monzer
- first_name: Annamaria
  full_name: Hlavata, Annamaria
  id: 36062FEC-F248-11E8-B48F-1D18A9856A87
  last_name: Hlavata
- first_name: Erika
  full_name: Isono, Erika
  last_name: Isono
- first_name: Martin
  full_name: Loose, Martin
  id: 462D4284-F248-11E8-B48F-1D18A9856A87
  last_name: Loose
  orcid: 0000-0001-7309-9724
- first_name: Jiří
  full_name: Friml, Jiří
  id: 4159519E-F248-11E8-B48F-1D18A9856A87
  last_name: Friml
  orcid: 0000-0002-8302-7596
citation:
  ama: Gnyliukh N, Johnson AJ, Nagel M-K, et al. Role of dynamin-related proteins
    2 and SH3P2 in clathrin-mediated endocytosis in plants. <i>bioRxiv</i>. doi:<a
    href="https://doi.org/10.1101/2023.10.09.561523">10.1101/2023.10.09.561523</a>
  apa: Gnyliukh, N., Johnson, A. J., Nagel, M.-K., Monzer, A., Hlavata, A., Isono,
    E., … Friml, J. (n.d.). Role of dynamin-related proteins 2 and SH3P2 in clathrin-mediated
    endocytosis in plants. <i>bioRxiv</i>. <a href="https://doi.org/10.1101/2023.10.09.561523">https://doi.org/10.1101/2023.10.09.561523</a>
  chicago: Gnyliukh, Nataliia, Alexander J Johnson, Marie-Kristin Nagel, Aline Monzer,
    Annamaria Hlavata, Erika Isono, Martin Loose, and Jiří Friml. “Role of Dynamin-Related
    Proteins 2 and SH3P2 in Clathrin-Mediated Endocytosis in Plants.” <i>BioRxiv</i>,
    n.d. <a href="https://doi.org/10.1101/2023.10.09.561523">https://doi.org/10.1101/2023.10.09.561523</a>.
  ieee: N. Gnyliukh <i>et al.</i>, “Role of dynamin-related proteins 2 and SH3P2 in
    clathrin-mediated endocytosis in plants,” <i>bioRxiv</i>. .
  ista: Gnyliukh N, Johnson AJ, Nagel M-K, Monzer A, Hlavata A, Isono E, Loose M,
    Friml J. Role of dynamin-related proteins 2 and SH3P2 in clathrin-mediated endocytosis
    in plants. bioRxiv, <a href="https://doi.org/10.1101/2023.10.09.561523">10.1101/2023.10.09.561523</a>.
  mla: Gnyliukh, Nataliia, et al. “Role of Dynamin-Related Proteins 2 and SH3P2 in
    Clathrin-Mediated Endocytosis in Plants.” <i>BioRxiv</i>, doi:<a href="https://doi.org/10.1101/2023.10.09.561523">10.1101/2023.10.09.561523</a>.
  short: N. Gnyliukh, A.J. Johnson, M.-K. Nagel, A. Monzer, A. Hlavata, E. Isono,
    M. Loose, J. Friml, BioRxiv (n.d.).
corr_author: '1'
date_created: 2023-11-22T10:17:49Z
date_published: 2023-10-10T00:00:00Z
date_updated: 2026-09-04T22:30:55Z
day: '10'
department:
- _id: JiFr
- _id: MaLo
- _id: CaBe
doi: 10.1101/2023.10.09.561523
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1101/2023.10.09.561523
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: bioRxiv
publication_status: draft
related_material:
  record:
  - id: '15330'
    relation: later_version
    status: public
  - id: '14510'
    relation: dissertation_contains
    status: public
status: public
title: Role of dynamin-related proteins 2 and SH3P2 in clathrin-mediated endocytosis
  in plants
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
OA_place: publisher
_id: '12470'
abstract:
- lang: eng
  text: "The brain is an exceptionally sophisticated organ consisting of billions
    of cells and trillions of \r\nconnections that orchestrate our cognition and behavior.
    To decode its complex connectivity, it is \r\npivotal to disentangle its intricate
    architecture spanning from cm-sized circuits down to tens of \r\nnm-small synapses.\r\nTo
    achieve this goal, I developed CATS – Comprehensive Analysis of nervous Tissue
    across \r\nScales, a versatile toolbox for obtaining a holistic view of nervous
    tissue context with (super\x02resolution) fluorescence microscopy. CATS combines
    comprehensive labeling of the extracellular\r\nspace, that is compatible with
    chemical fixation, with information on molecular markers, super\x02resolved data
    acquisition and machine-learning based data analysis for segmentation and synapse
    \r\nidentification.\r\nI used CATS to analyze key features of nervous tissue connectivity,
    ranging from whole tissue \r\narchitecture, neuronal in- and output-fields, down
    to synapse morphology.\r\nFocusing on the hippocampal circuitry, I quantified
    synaptic transmission properties of mossy \r\nfiber boutons and analyzed the connectivity
    pattern of dentate gyrus granule cells with CA3 \r\npyramidal neurons. This shows
    that CATS is a viable tool to study hallmarks of neuronal \r\nconnectivity with
    light microscopy."
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
- _id: PreCl
- _id: EM-Fac
- _id: M-Shop
- _id: ScienComp
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Julia M
  full_name: Michalska, Julia M
  id: 443DB6DE-F248-11E8-B48F-1D18A9856A87
  last_name: Michalska
  orcid: 0000-0003-3862-1235
citation:
  ama: Michalska JM. A versatile toolbox for the comprehensive analysis of nervous
    tissue organization with light microscopy. 2023. doi:<a href="https://doi.org/10.15479/at:ista:12470">10.15479/at:ista:12470</a>
  apa: Michalska, J. M. (2023). <i>A versatile toolbox for the comprehensive analysis
    of nervous tissue organization with light microscopy</i>. Institute of Science
    and Technology Austria. <a href="https://doi.org/10.15479/at:ista:12470">https://doi.org/10.15479/at:ista:12470</a>
  chicago: Michalska, Julia M. “A Versatile Toolbox for the Comprehensive Analysis
    of Nervous Tissue Organization with Light Microscopy.” Institute of Science and
    Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:12470">https://doi.org/10.15479/at:ista:12470</a>.
  ieee: J. M. Michalska, “A versatile toolbox for the comprehensive analysis of nervous
    tissue organization with light microscopy,” Institute of Science and Technology
    Austria, 2023.
  ista: Michalska JM. 2023. A versatile toolbox for the comprehensive analysis of
    nervous tissue organization with light microscopy. Institute of Science and Technology
    Austria.
  mla: Michalska, Julia M. <i>A Versatile Toolbox for the Comprehensive Analysis of
    Nervous Tissue Organization with Light Microscopy</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:12470">10.15479/at:ista:12470</a>.
  short: J.M. Michalska, A Versatile Toolbox for the Comprehensive Analysis of Nervous
    Tissue Organization with Light Microscopy, Institute of Science and Technology
    Austria, 2023.
corr_author: '1'
date_created: 2023-01-31T15:10:53Z
date_published: 2023-01-09T00:00:00Z
date_updated: 2026-07-06T12:50:45Z
day: '09'
ddc:
- '610'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoDa
doi: 10.15479/at:ista:12470
ec_funded: 1
file:
- access_level: open_access
  checksum: 1a2306e5f59f52df598e7ecfadf921ac
  content_type: application/pdf
  creator: cchlebak
  date_created: 2023-01-31T15:11:42Z
  date_updated: 2023-07-27T22:30:54Z
  embargo: 2023-07-09
  file_id: '12471'
  file_name: 20230109_PhD_thesis_JM_final.pdf
  file_size: 41771714
  relation: main_file
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  checksum: 0bebbdee0773443959e1f6ab8caf281f
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  creator: cchlebak
  date_created: 2023-01-31T15:11:51Z
  date_updated: 2023-07-10T22:30:04Z
  embargo_to: open_access
  file_id: '12472'
  file_name: 20230109_PhD_thesis_JM_final.docx
  file_size: 66983464
  relation: source_file
file_date_updated: 2023-07-27T22:30:54Z
has_accepted_license: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: '201'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 26AA4EF2-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: W1232-B24
  name: Molecular Drug Targets
publication_identifier:
  isbn:
  - 978-3-99078-026-8
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '11943'
    relation: part_of_dissertation
    status: public
  - id: '11950'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Johann G
  full_name: Danzl, Johann G
  id: 42EFD3B6-F248-11E8-B48F-1D18A9856A87
  last_name: Danzl
  orcid: 0000-0001-8559-3973
title: A versatile toolbox for the comprehensive analysis of nervous tissue organization
  with light microscopy
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...
---
_id: '10826'
abstract:
- lang: eng
  text: Animals that lose one sensory modality often show augmented responses to other
    sensory inputs. The mechanisms underpinning this cross-modal plasticity are poorly
    understood. We probe such mechanisms by performing a forward genetic screen for
    mutants with enhanced O2 perception in Caenorhabditis elegans. Multiple mutants
    exhibiting increased O2 responsiveness concomitantly show defects in other sensory
    responses. One mutant, qui-1, defective in a conserved NACHT/WD40 protein, abolishes
    pheromone-evoked Ca2+ responses in the ADL pheromone-sensing neurons. At the same
    time, ADL responsiveness to pre-synaptic input from O2-sensing neurons is heightened
    in qui-1, and other sensory defective mutants, resulting in enhanced neurosecretion
    although not increased Ca2+ responses. Expressing qui-1 selectively in ADL rescues
    both the qui-1 ADL neurosecretory phenotype and enhanced escape from 21% O2. Profiling
    ADL neurons in qui-1 mutants highlights extensive changes in gene expression,
    notably of many neuropeptide receptors. We show that elevated ADL expression of
    the conserved neuropeptide receptor NPR-22 is necessary for enhanced ADL neurosecretion
    in qui-1 mutants, and is sufficient to confer increased ADL neurosecretion in
    control animals. Sensory loss can thus confer cross-modal plasticity by changing
    the peptidergic connectome.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
- _id: ScienComp
acknowledgement: "We would like to thank Gemma Chandratillake and Merav Cohen for
  identifying mutants and José David Moñino Sánchez for his help on neurosecretion
  assays. We are grateful to Kaveh Ashrafi (UCSF), Piali Sengupta (Brandeis), and
  the Caenorhabditis Genetic Center (funded by National Institutes of Health Infrastructure
  Program P40 OD010440) for strains and reagents ... and Rebecca Butcher (Univ. Florida)
  for C9 pheromone. We thank Tim Stevens, Paula Freire-Pritchett, Alastair Crisp,
  GurpreetGhattaoraya, and Fabian Amman for help with bioinformatic analysis, Ekaterina
  Lashmanova for help with injections, Iris Hardege for strains, and Isabel Beets
  (KU Leuven) and members of the de Bono Lab for comments on the manuscript. We thank
  the CRUK Cambridge Research Institute Genomics Core for next generation sequencing
  and the Flow Cytometry Facility at LMB for FACS. This research was supported by
  the Scientific Service Units (SSU) of IST Austria through resources provided by
  the Bioimaging Facility (BIF), the Life Science Facility (LSF) and Scientific Computing
  (SciCo-p– Bioinformatics).\r\nThis work was supported by the Medical Research Council
  UK (Studentship to GV), an\r\nAdvanced ERC grant (269,058 ACMO to MdB), and a Wellcome
  Investigator Award (209504/Z/17/Z to MdB)."
article_number: e68040
article_processing_charge: No
article_type: original
author:
- first_name: Giulio
  full_name: Valperga, Giulio
  id: 67F289DE-0D8F-11EA-9BDD-54AE3DDC885E
  last_name: Valperga
  orcid: 0000-0001-6726-3890
- first_name: Mario
  full_name: De Bono, Mario
  id: 4E3FF80E-F248-11E8-B48F-1D18A9856A87
  last_name: De Bono
  orcid: 0000-0001-8347-0443
citation:
  ama: Valperga G, de Bono M. Impairing one sensory modality enhances another by reconfiguring
    peptidergic signalling in Caenorhabditis elegans. <i>eLife</i>. 2022;11. doi:<a
    href="https://doi.org/10.7554/eLife.68040">10.7554/eLife.68040</a>
  apa: Valperga, G., &#38; de Bono, M. (2022). Impairing one sensory modality enhances
    another by reconfiguring peptidergic signalling in Caenorhabditis elegans. <i>ELife</i>.
    eLife Sciences Publications. <a href="https://doi.org/10.7554/eLife.68040">https://doi.org/10.7554/eLife.68040</a>
  chicago: Valperga, Giulio, and Mario de Bono. “Impairing One Sensory Modality Enhances
    Another by Reconfiguring Peptidergic Signalling in Caenorhabditis Elegans.” <i>ELife</i>.
    eLife Sciences Publications, 2022. <a href="https://doi.org/10.7554/eLife.68040">https://doi.org/10.7554/eLife.68040</a>.
  ieee: G. Valperga and M. de Bono, “Impairing one sensory modality enhances another
    by reconfiguring peptidergic signalling in Caenorhabditis elegans,” <i>eLife</i>,
    vol. 11. eLife Sciences Publications, 2022.
  ista: Valperga G, de Bono M. 2022. Impairing one sensory modality enhances another
    by reconfiguring peptidergic signalling in Caenorhabditis elegans. eLife. 11,
    e68040.
  mla: Valperga, Giulio, and Mario de Bono. “Impairing One Sensory Modality Enhances
    Another by Reconfiguring Peptidergic Signalling in Caenorhabditis Elegans.” <i>ELife</i>,
    vol. 11, e68040, eLife Sciences Publications, 2022, doi:<a href="https://doi.org/10.7554/eLife.68040">10.7554/eLife.68040</a>.
  short: G. Valperga, M. de Bono, ELife 11 (2022).
corr_author: '1'
date_created: 2022-03-06T23:01:52Z
date_published: 2022-02-24T00:00:00Z
date_updated: 2026-04-02T12:45:39Z
day: '24'
ddc:
- '570'
department:
- _id: MaDe
doi: 10.7554/eLife.68040
external_id:
  isi:
  - '000763432300001'
  pmid:
  - '35201977'
file:
- access_level: open_access
  checksum: cc1b9bf866d0f61f965556e0dd03d3ac
  content_type: application/pdf
  creator: dernst
  date_created: 2022-03-07T07:39:25Z
  date_updated: 2022-03-07T07:39:25Z
  file_id: '10830'
  file_name: 2022_eLife_Valperga.pdf
  file_size: 4095591
  relation: main_file
  success: 1
file_date_updated: 2022-03-07T07:39:25Z
has_accepted_license: '1'
intvolume: '        11'
isi: 1
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 23870BE8-32DE-11EA-91FC-C7463DDC885E
  grant_number: 209504/A/17/Z
  name: Molecular mechanisms of neural circuit function
publication: eLife
publication_identifier:
  eissn:
  - 2050-084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
scopus_import: '1'
status: public
title: Impairing one sensory modality enhances another by reconfiguring peptidergic
  signalling in Caenorhabditis elegans
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 11
year: '2022'
...
---
_id: '10918'
abstract:
- lang: eng
  text: Cellular metabolism must adapt to changing demands to enable homeostasis.
    During immune responses or cancer metastasis, cells leading migration into challenging
    environments require an energy boost, but what controls this capacity is unclear.
    Here, we study a previously uncharacterized nuclear protein, Atossa (encoded by
    CG9005), which supports macrophage invasion into the germband of Drosophila by
    controlling cellular metabolism. First, nuclear Atossa increases mRNA levels of
    Porthos, a DEAD-box protein, and of two metabolic enzymes, lysine-α-ketoglutarate
    reductase (LKR/SDH) and NADPH glyoxylate reductase (GR/HPR), thus enhancing mitochondrial
    bioenergetics. Then Porthos supports ribosome assembly and thereby raises the
    translational efficiency of a subset of mRNAs, including those affecting mitochondrial
    functions, the electron transport chain, and metabolism. Mitochondrial respiration
    measurements, metabolomics, and live imaging indicate that Atossa and Porthos
    power up OxPhos and energy production to promote the forging of a path into tissues
    by leading macrophages. Since many crucial physiological responses require increases
    in mitochondrial energy output, this previously undescribed genetic program may
    modulate a wide range of cellular behaviors.
acknowledged_ssus:
- _id: Bio
acknowledgement: "We thank the DGRC (NIH grant 2P40OD010949-10A1) for plasmids, the
  BDSC (NIH grant P40OD018537) and the VDRC for fly stocks, FlyBase for essential
  genomic information, the BDGP in situ database for data (Tomancak et al, 2007),
  the IST Austria Bioimaging facility for support, the VBC Core Facilities for RNA
  sequencing and analysis, and C. Guet, C. Navarro, C. Desplan, T. Lecuit, I. Miguel-Aliaga,
  and Siekhaus group members for comments on the manuscript. The VBCF Metabolomics
  Facility is funded by the City of Vienna through the Vienna Business Agency. This
  work was supported by the Marie Curie CIG 334077/IRTIM (DES), Austrian Science Fund
  (FWF) Lise Meitner Fellowship M2379-B28 (MA and DES), Austrian Science Fund (FWF)
  grant ASI_FWF01_P29638S (DES), NIH/NIGMS (R01GM111779-06 (PR), RO1GM135628-01 (PR),
  European Research Council (ERC) grant no. 677006 “CMIL” (AB), and Natural Sciences
  and Engineering Research Council of Canada\r\n(RGPIN-2019-06766) (TRH). "
article_number: e109049
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Shamsi
  full_name: Emtenani, Shamsi
  id: 49D32318-F248-11E8-B48F-1D18A9856A87
  last_name: Emtenani
  orcid: 0000-0001-6981-6938
- first_name: Elliot T
  full_name: Martin, Elliot T
  last_name: Martin
- first_name: Attila
  full_name: György, Attila
  id: 3BCEDBE0-F248-11E8-B48F-1D18A9856A87
  last_name: György
  orcid: 0000-0002-1819-198X
- first_name: Julia
  full_name: Bicher, Julia
  id: 3CCBB46E-F248-11E8-B48F-1D18A9856A87
  last_name: Bicher
- first_name: Jakob-Wendelin
  full_name: Genger, Jakob-Wendelin
  last_name: Genger
- first_name: Thomas
  full_name: Köcher, Thomas
  last_name: Köcher
- first_name: Maria
  full_name: Akhmanova, Maria
  id: 3425EC26-F248-11E8-B48F-1D18A9856A87
  last_name: Akhmanova
  orcid: 0000-0003-1522-3162
- first_name: Mariana
  full_name: Pereira Guarda, Mariana
  id: 6de81d9d-e2f2-11eb-945a-af8bc2a60b26
  last_name: Pereira Guarda
  orcid: 0000-0001-8238-480X
- first_name: Marko
  full_name: Roblek, Marko
  id: 3047D808-F248-11E8-B48F-1D18A9856A87
  last_name: Roblek
  orcid: 0000-0001-9588-1389
- first_name: Andreas
  full_name: Bergthaler, Andreas
  last_name: Bergthaler
- first_name: Thomas R
  full_name: Hurd, Thomas R
  last_name: Hurd
- first_name: Prashanth
  full_name: Rangan, Prashanth
  last_name: Rangan
- first_name: Daria E
  full_name: Siekhaus, Daria E
  id: 3D224B9E-F248-11E8-B48F-1D18A9856A87
  last_name: Siekhaus
  orcid: 0000-0001-8323-8353
citation:
  ama: Emtenani S, Martin ET, György A, et al. Macrophage mitochondrial bioenergetics
    and tissue invasion are boosted by an Atossa-Porthos axis in Drosophila. <i>The
    Embo Journal</i>. 2022;41. doi:<a href="https://doi.org/10.15252/embj.2021109049">10.15252/embj.2021109049</a>
  apa: Emtenani, S., Martin, E. T., György, A., Bicher, J., Genger, J.-W., Köcher,
    T., … Siekhaus, D. E. (2022). Macrophage mitochondrial bioenergetics and tissue
    invasion are boosted by an Atossa-Porthos axis in Drosophila. <i>The Embo Journal</i>.
    Embo Press. <a href="https://doi.org/10.15252/embj.2021109049">https://doi.org/10.15252/embj.2021109049</a>
  chicago: Emtenani, Shamsi, Elliot T Martin, Attila György, Julia Bicher, Jakob-Wendelin
    Genger, Thomas Köcher, Maria Akhmanova, et al. “Macrophage Mitochondrial Bioenergetics
    and Tissue Invasion Are Boosted by an Atossa-Porthos Axis in Drosophila.” <i>The
    Embo Journal</i>. Embo Press, 2022. <a href="https://doi.org/10.15252/embj.2021109049">https://doi.org/10.15252/embj.2021109049</a>.
  ieee: S. Emtenani <i>et al.</i>, “Macrophage mitochondrial bioenergetics and tissue
    invasion are boosted by an Atossa-Porthos axis in Drosophila,” <i>The Embo Journal</i>,
    vol. 41. Embo Press, 2022.
  ista: Emtenani S, Martin ET, György A, Bicher J, Genger J-W, Köcher T, Akhmanova
    M, Pereira Guarda M, Roblek M, Bergthaler A, Hurd TR, Rangan P, Siekhaus DE. 2022.
    Macrophage mitochondrial bioenergetics and tissue invasion are boosted by an Atossa-Porthos
    axis in Drosophila. The Embo Journal. 41, e109049.
  mla: Emtenani, Shamsi, et al. “Macrophage Mitochondrial Bioenergetics and Tissue
    Invasion Are Boosted by an Atossa-Porthos Axis in Drosophila.” <i>The Embo Journal</i>,
    vol. 41, e109049, Embo Press, 2022, doi:<a href="https://doi.org/10.15252/embj.2021109049">10.15252/embj.2021109049</a>.
  short: S. Emtenani, E.T. Martin, A. György, J. Bicher, J.-W. Genger, T. Köcher,
    M. Akhmanova, M. Pereira Guarda, M. Roblek, A. Bergthaler, T.R. Hurd, P. Rangan,
    D.E. Siekhaus, The Embo Journal 41 (2022).
corr_author: '1'
date_created: 2022-03-24T13:23:09Z
date_published: 2022-03-23T00:00:00Z
date_updated: 2025-06-12T06:20:16Z
day: '23'
ddc:
- '570'
department:
- _id: DaSi
- _id: LoSw
doi: 10.15252/embj.2021109049
ec_funded: 1
external_id:
  isi:
  - '000771957000001'
  pmid:
  - '35319107'
file:
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  checksum: dba48580fe0fefaa4c63078d1d2a35df
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  date_created: 2022-03-24T13:22:41Z
  date_updated: 2022-03-24T13:22:41Z
  file_id: '10919'
  file_name: Macrophage mitochondrial bioenergetics and tissue invasion are boosted
    by an Atossa-Porthos axis in Drosopila.pdf
  file_size: 4344585
  relation: main_file
file_date_updated: 2022-03-24T13:22:41Z
has_accepted_license: '1'
intvolume: '        41'
isi: 1
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 2536F660-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '334077'
  name: Investigating the role of transporters in invasive migration through junctions
- _id: 264CBBAC-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: M02379
  name: Modeling epithelial tissue mechanics during cell invasion
- _id: 253B6E48-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P29638
  name: The role of Drosophila TNF alpha in immune cell invasion
publication: The Embo Journal
publication_identifier:
  eissn:
  - 1460-2075
publication_status: published
publisher: Embo Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Macrophage mitochondrial bioenergetics and tissue invasion are boosted by an
  Atossa-Porthos axis in Drosophila
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 41
year: '2022'
...
---
OA_place: publisher
_id: '11128'
abstract:
- lang: eng
  text: "Although we often see studies focusing on simple or even discrete traits
    in studies of colouration,\r\nthe variation of “appearance” phenotypes found in
    nature is often more complex, continuous\r\nand high-dimensional. Therefore, we
    developed automated methods suitable for large datasets\r\nof genomes and images,
    striving to account for their complex nature, while minimising human\r\nbias.
    We used these methods on a dataset of more than 20, 000 plant SNP genomes and\r\ncorresponding
    fower images from a hybrid zone of two subspecies of Antirrhinum majus with\r\ndistinctly
    coloured fowers to improve our understanding of the genetic nature of the fower\r\ncolour
    in our study system.\r\nFirstly, we use the advantage of large numbers of genotyped
    plants to estimate the haplotypes in\r\nthe main fower colour regulating region.
    We study colour- and geography-related characteristics\r\nof the estimated haplotypes
    and how they connect to their relatedness. We show discrepancies\r\nfrom the expected
    fower colour distributions given the genotype and identify particular\r\nhaplotypes
    leading to unexpected phenotypes. We also confrm a signifcant defcit of the\r\ndouble
    recessive recombinant and quite surprisingly, we show that haplotypes of the most\r\nfrequent
    parental type are much less variable than others.\r\nSecondly, we introduce our
    pipeline capable of processing tens of thousands of full fower\r\nimages without
    human interaction and summarising each image into a set of informative scores.\r\nWe
    show the compatibility of these machine-measured fower colour scores with the
    previously\r\nused manual scores and study impact of external efect on the resulting
    scores. Finally, we use\r\nthe machine-measured fower colour scores to ft and
    examine a phenotype cline across the\r\nhybrid zone in Planoles using full fower
    images as opposed to discrete, manual scores and\r\ncompare it with the genotypic
    cline."
acknowledged_ssus:
- _id: ScienComp
- _id: Bio
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Lenka
  full_name: Matejovicova, Lenka
  id: 2DFDEC72-F248-11E8-B48F-1D18A9856A87
  last_name: Matejovicova
citation:
  ama: Matejovicova L. Genetic basis of flower colour as a model for adaptive evolution.
    2022. doi:<a href="https://doi.org/10.15479/at:ista:11128">10.15479/at:ista:11128</a>
  apa: Matejovicova, L. (2022). <i>Genetic basis of flower colour as a model for adaptive
    evolution</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:11128">https://doi.org/10.15479/at:ista:11128</a>
  chicago: Matejovicova, Lenka. “Genetic Basis of Flower Colour as a Model for Adaptive
    Evolution.” Institute of Science and Technology Austria, 2022. <a href="https://doi.org/10.15479/at:ista:11128">https://doi.org/10.15479/at:ista:11128</a>.
  ieee: L. Matejovicova, “Genetic basis of flower colour as a model for adaptive evolution,”
    Institute of Science and Technology Austria, 2022.
  ista: Matejovicova L. 2022. Genetic basis of flower colour as a model for adaptive
    evolution. Institute of Science and Technology Austria.
  mla: Matejovicova, Lenka. <i>Genetic Basis of Flower Colour as a Model for Adaptive
    Evolution</i>. Institute of Science and Technology Austria, 2022, doi:<a href="https://doi.org/10.15479/at:ista:11128">10.15479/at:ista:11128</a>.
  short: L. Matejovicova, Genetic Basis of Flower Colour as a Model for Adaptive Evolution,
    Institute of Science and Technology Austria, 2022.
corr_author: '1'
date_created: 2022-04-07T08:19:54Z
date_published: 2022-04-06T00:00:00Z
date_updated: 2026-04-07T14:12:19Z
day: '06'
ddc:
- '576'
- '582'
degree_awarded: PhD
department:
- _id: GradSch
- _id: NiBa
doi: 10.15479/at:ista:11128
file:
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  creator: cchlebak
  date_created: 2022-04-07T08:11:51Z
  date_updated: 2022-04-07T08:11:51Z
  file_id: '11130'
  file_name: LenkaPhD Official_source.zip
  file_size: 23036766
  relation: source_file
file_date_updated: 2022-04-07T08:11:51Z
has_accepted_license: '1'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: '112'
publication_identifier:
  isbn:
  - 978-3-99078-016-9
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
title: Genetic basis of flower colour as a model for adaptive evolution
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2022'
...
---
_id: '11336'
abstract:
- lang: eng
  text: The generation of a correctly-sized cerebral cortex with all-embracing neuronal
    and glial cell-type diversity critically depends on faithful radial glial progenitor
    (RGP) cell proliferation/differentiation programs. Temporal RGP lineage progression
    is regulated by Polycomb Repressive Complex 2 (PRC2) and loss of PRC2 activity
    results in severe neurogenesis defects and microcephaly. How PRC2-dependent gene
    expression instructs RGP lineage progression is unknown. Here we utilize Mosaic
    Analysis with Double Markers (MADM)-based single cell technology and demonstrate
    that PRC2 is not cell-autonomously required in neurogenic RGPs but rather acts
    at the global tissue-wide level. Conversely, cortical astrocyte production and
    maturation is cell-autonomously controlled by PRC2-dependent transcriptional regulation.
    We thus reveal highly distinct and sequential PRC2 functions in RGP lineage progression
    that are dependent on complex interplays between intrinsic and tissue-wide properties.
    In a broader context our results imply a critical role for the genetic and cellular
    niche environment in neural stem cell behavior.
acknowledged_ssus:
- _id: PreCl
- _id: Bio
- _id: LifeSc
acknowledgement: We thank A. Heger (IST Austria Preclinical Facility), A. Sommer and
  C. Czepe (VBCF GmbH, NGS  Unit)  and  S.  Gharagozlou  for  technical  support.  This  research  was  supported  by  the  Scientific  Service  Units  (SSU)  of  IST  Austria  through  resources  provided  by  the  Imaging  &  Optics
  Facility (IOF), Lab Support Facility (LSF), and Preclinical Facility (PCF). N.A.
  received funding   from   the   FWF   Firnberg-Programm   (T   1031).   The   work   was   supported   by   IST   institutional  funds  and  by  the  European  Research  Council  (ERC)  under  the  European  Union’s  Horizon
  2020 research and innovation program (grant agreement 725780 LinPro) to S.H.
article_number: abq1263
article_processing_charge: No
article_type: original
author:
- first_name: Nicole
  full_name: Amberg, Nicole
  id: 4CD6AAC6-F248-11E8-B48F-1D18A9856A87
  last_name: Amberg
  orcid: 0000-0002-3183-8207
- first_name: Florian
  full_name: Pauler, Florian
  id: 48EA0138-F248-11E8-B48F-1D18A9856A87
  last_name: Pauler
  orcid: 0000-0002-7462-0048
- first_name: Carmen
  full_name: Streicher, Carmen
  id: 36BCB99C-F248-11E8-B48F-1D18A9856A87
  last_name: Streicher
- first_name: Simon
  full_name: Hippenmeyer, Simon
  id: 37B36620-F248-11E8-B48F-1D18A9856A87
  last_name: Hippenmeyer
  orcid: 0000-0003-2279-1061
citation:
  ama: Amberg N, Pauler F, Streicher C, Hippenmeyer S. Tissue-wide genetic and cellular
    landscape shapes the execution of sequential PRC2 functions in neural stem cell
    lineage progression. <i>Science Advances</i>. 2022;8(44). doi:<a href="https://doi.org/10.1126/sciadv.abq1263">10.1126/sciadv.abq1263</a>
  apa: Amberg, N., Pauler, F., Streicher, C., &#38; Hippenmeyer, S. (2022). Tissue-wide
    genetic and cellular landscape shapes the execution of sequential PRC2 functions
    in neural stem cell lineage progression. <i>Science Advances</i>. American Association
    for the Advancement of Science. <a href="https://doi.org/10.1126/sciadv.abq1263">https://doi.org/10.1126/sciadv.abq1263</a>
  chicago: Amberg, Nicole, Florian Pauler, Carmen Streicher, and Simon Hippenmeyer.
    “Tissue-Wide Genetic and Cellular Landscape Shapes the Execution of Sequential
    PRC2 Functions in Neural Stem Cell Lineage Progression.” <i>Science Advances</i>.
    American Association for the Advancement of Science, 2022. <a href="https://doi.org/10.1126/sciadv.abq1263">https://doi.org/10.1126/sciadv.abq1263</a>.
  ieee: N. Amberg, F. Pauler, C. Streicher, and S. Hippenmeyer, “Tissue-wide genetic
    and cellular landscape shapes the execution of sequential PRC2 functions in neural
    stem cell lineage progression,” <i>Science Advances</i>, vol. 8, no. 44. American
    Association for the Advancement of Science, 2022.
  ista: Amberg N, Pauler F, Streicher C, Hippenmeyer S. 2022. Tissue-wide genetic
    and cellular landscape shapes the execution of sequential PRC2 functions in neural
    stem cell lineage progression. Science Advances. 8(44), abq1263.
  mla: Amberg, Nicole, et al. “Tissue-Wide Genetic and Cellular Landscape Shapes the
    Execution of Sequential PRC2 Functions in Neural Stem Cell Lineage Progression.”
    <i>Science Advances</i>, vol. 8, no. 44, abq1263, American Association for the
    Advancement of Science, 2022, doi:<a href="https://doi.org/10.1126/sciadv.abq1263">10.1126/sciadv.abq1263</a>.
  short: N. Amberg, F. Pauler, C. Streicher, S. Hippenmeyer, Science Advances 8 (2022).
corr_author: '1'
date_created: 2022-04-26T15:04:50Z
date_published: 2022-11-01T00:00:00Z
date_updated: 2025-09-09T14:30:38Z
day: '01'
ddc:
- '570'
department:
- _id: SiHi
doi: 10.1126/sciadv.abq1263
ec_funded: 1
external_id:
  isi:
  - '000918406800019'
  pmid:
  - '36322669'
file:
- access_level: open_access
  checksum: 0117023e188542082ca6693cf39e7f03
  content_type: application/pdf
  creator: patrickd
  date_created: 2023-03-21T14:18:10Z
  date_updated: 2023-03-21T14:18:10Z
  file_id: '12742'
  file_name: sciadv.abq1263.pdf
  file_size: 2973998
  relation: main_file
  success: 1
file_date_updated: 2023-03-21T14:18:10Z
has_accepted_license: '1'
intvolume: '         8'
isi: 1
issue: '44'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 260018B0-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '725780'
  name: Principles of Neural Stem Cell Lineage Progression in Cerebral Cortex Development
- _id: 268F8446-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: T01031
  name: Role of Eed in neural stem cell lineage progression
publication: Science Advances
publication_identifier:
  issn:
  - 2375-2548
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
related_material:
  link:
  - description: News on ISTA website
    relation: press_release
    url: https://ista.ac.at/en/news/whole-tissue-shapes-brain-development/
scopus_import: '1'
status: public
title: Tissue-wide genetic and cellular landscape shapes the execution of sequential
  PRC2 functions in neural stem cell lineage progression
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 8
year: '2022'
...
---
_id: '11341'
abstract:
- lang: eng
  text: Intragenic regions that are removed during maturation of the RNA transcript—introns—are
    universally present in the nuclear genomes of eukaryotes1. The budding yeast,
    an otherwise intron-poor species, preserves two sets of ribosomal protein genes
    that differ primarily in their introns2,3. Although studies have shed light on
    the role of ribosomal protein introns under stress and starvation4,5,6, understanding
    the contribution of introns to ribosome regulation remains challenging. Here,
    by combining isogrowth profiling7 with single-cell protein measurements8, we show
    that introns can mediate inducible phenotypic heterogeneity that confers a clear
    fitness advantage. Osmotic stress leads to bimodal expression of the small ribosomal
    subunit protein Rps22B, which is mediated by an intron in the 5′ untranslated
    region of its transcript. The two resulting yeast subpopulations differ in their
    ability to cope with starvation. Low levels of Rps22B protein result in prolonged
    survival under sustained starvation, whereas high levels of Rps22B enable cells
    to grow faster after transient starvation. Furthermore, yeasts growing at high
    concentrations of sugar, similar to those in ripe grapes, exhibit bimodal expression
    of Rps22B when approaching the stationary phase. Differential intron-mediated
    regulation of ribosomal protein genes thus provides a way to diversify the population
    when starvation threatens in natural environments. Our findings reveal a role
    for introns in inducing phenotypic heterogeneity in changing environments, and
    suggest that duplicated ribosomal protein genes in yeast contribute to resolving
    the evolutionary conflict between precise expression control and environmental
    responsiveness9.
acknowledged_ssus:
- _id: LifeSc
- _id: M-Shop
- _id: Bio
acknowledgement: We thank the IST Austria Life Science Facility, the Miba Machine
  Shop and M. Lukačišinová for support with the liquid handling robot; the Bioimaging
  Facility at IST Austria, J. Power and B. Meier at the University of Cologne, and
  C. Göttlinger at the FACS Analysis Facility at the Institute for Genetics, University
  of Cologne, for support with flow cytometry experiments; L. Horst for the development
  of the automated experimental methods in Cologne; J. Parenteau, S. Abou Elela, G.
  Stormo, M. Springer and M. Schuldiner for providing us with yeast strains; B. Fernando,
  T. Fink, G. Ansmann and G. Chevreau for technical support; H. Köver, G. Tkačik,
  N. Barton, A. Angermayr and B. Kavčič for support during laboratory relocation;
  D. Siekhaus, M. Springer and all the members of the Bollenbach group for support
  and discussions; and K. Mitosch, M. Lukačišinová, G. Liti and A. de Luna for critical
  reading of our manuscript. This work was supported in part by an Austrian Science
  Fund (FWF) standalone grant P 27201-B22 (to T.B.), HFSP program Grant RGP0042/2013
  (to T.B.), EU Marie Curie Career Integration Grant No. 303507, and German Research
  Foundation (DFG) Collaborative Research Centre (SFB) 1310 (to T.B.). A.E.-C. was
  supported by a Georg Forster fellowship from the Alexander von Humboldt Foundation.
article_processing_charge: No
article_type: original
author:
- first_name: Martin
  full_name: Lukacisin, Martin
  id: 298FFE8C-F248-11E8-B48F-1D18A9856A87
  last_name: Lukacisin
  orcid: 0000-0001-6549-4177
- first_name: Adriana
  full_name: Espinosa-Cantú, Adriana
  last_name: Espinosa-Cantú
- first_name: Mark Tobias
  full_name: Bollenbach, Mark Tobias
  id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87
  last_name: Bollenbach
  orcid: 0000-0003-4398-476X
citation:
  ama: Lukacisin M, Espinosa-Cantú A, Bollenbach MT. Intron-mediated induction of
    phenotypic heterogeneity. <i>Nature</i>. 2022;605:113-118. doi:<a href="https://doi.org/10.1038/s41586-022-04633-0">10.1038/s41586-022-04633-0</a>
  apa: Lukacisin, M., Espinosa-Cantú, A., &#38; Bollenbach, M. T. (2022). Intron-mediated
    induction of phenotypic heterogeneity. <i>Nature</i>. Springer Nature. <a href="https://doi.org/10.1038/s41586-022-04633-0">https://doi.org/10.1038/s41586-022-04633-0</a>
  chicago: Lukacisin, Martin, Adriana Espinosa-Cantú, and Mark Tobias Bollenbach.
    “Intron-Mediated Induction of Phenotypic Heterogeneity.” <i>Nature</i>. Springer
    Nature, 2022. <a href="https://doi.org/10.1038/s41586-022-04633-0">https://doi.org/10.1038/s41586-022-04633-0</a>.
  ieee: M. Lukacisin, A. Espinosa-Cantú, and M. T. Bollenbach, “Intron-mediated induction
    of phenotypic heterogeneity,” <i>Nature</i>, vol. 605. Springer Nature, pp. 113–118,
    2022.
  ista: Lukacisin M, Espinosa-Cantú A, Bollenbach MT. 2022. Intron-mediated induction
    of phenotypic heterogeneity. Nature. 605, 113–118.
  mla: Lukacisin, Martin, et al. “Intron-Mediated Induction of Phenotypic Heterogeneity.”
    <i>Nature</i>, vol. 605, Springer Nature, 2022, pp. 113–18, doi:<a href="https://doi.org/10.1038/s41586-022-04633-0">10.1038/s41586-022-04633-0</a>.
  short: M. Lukacisin, A. Espinosa-Cantú, M.T. Bollenbach, Nature 605 (2022) 113–118.
date_created: 2022-05-01T22:01:42Z
date_published: 2022-05-05T00:00:00Z
date_updated: 2025-04-14T09:40:45Z
day: '05'
ddc:
- '570'
doi: 10.1038/s41586-022-04633-0
ec_funded: 1
external_id:
  isi:
  - '000784934100003'
  pmid:
  - '35444278'
file:
- access_level: open_access
  checksum: d68cd1596bb9fd819b750fe47c8a138a
  content_type: application/pdf
  creator: dernst
  date_created: 2022-08-05T06:08:24Z
  date_updated: 2022-08-05T06:08:24Z
  file_id: '11727'
  file_name: 2022_Nature_Lukacisin.pdf
  file_size: 25360311
  relation: main_file
  success: 1
file_date_updated: 2022-08-05T06:08:24Z
has_accepted_license: '1'
intvolume: '       605'
isi: 1
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 113-118
pmid: 1
project:
- _id: 25E83C2C-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '303507'
  name: Optimality principles in responses to antibiotics
- _id: 25E9AF9E-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P27201-B22
  name: Revealing the mechanisms underlying drug interactions
publication: Nature
publication_identifier:
  eissn:
  - 1476-4687
  issn:
  - 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Intron-mediated induction of phenotypic heterogeneity
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 605
year: '2022'
...
