---
OA_place: publisher
_id: '19271'
abstract:
- lang: eng
  text: "The medial habenula (MHb) is implicated in regulating emotional responses\r\nto
    aversive events. Studies in zebrafish have identified a remarkable morphological\r\nleft-right
    asymmetry in the dorsal habenula (zebrafish equivalent of mammalian\r\nMHb)-to-interpeduncular
    nucleus (IPN) pathway and its left-side specific role in\r\nmodulating fear responses.
    However, there is little evidence for structural or\r\nfunctional lateralization
    in the mammalian MHb-IPN pathway.\r\nHere, I investigated the synaptic properties
    of the left and right MHb\r\nafferents to the IPN in mice and addressed whether
    these synaptic connections\r\nselectively influence the expression of conditioned
    fear in mice. My findings reveal\r\nthat each individual IPN neuron receives inputs
    from both left and right MHb.\r\nElectrophysiological recordings from the same
    postsynaptic IPN neurons\r\ndemonstrate that the left MHb-originating synapses
    exhibit lower release\r\nprobability and higher \U0001D6FE-aminobutyric acid type
    B receptor (GABABR)-mediated\r\npotentiation compared to the right MHb-originating
    synapses. Interestingly,\r\nchemogenetic inhibition of cholinergic neurons in
    the left but not the right MHb\r\nsignificantly attenuated cue-dependent fear
    recall. Furthermore, conditional\r\ndeletion of GABABR in the left MHb interfered
    with the recall of cued fear memory,\r\nwhereas that in the right MHb neurons
    spared fear memory expression.\r\nCollectively, I demonstrate a functional asymmetry
    of the MHb in mice,\r\nrevealing a predominant role for GABABR-mediated signaling
    in the left MHb-IPN\r\npathway in the modulation of fear memories. These findings
    suggest that\r\nlateralized pathways could represent a fundamental principle in
    the neural\r\nregulation of emotion across species."
acknowledged_ssus:
- _id: PreCl
- _id: M-Shop
acknowledgement: "I would like to thank the European Research Council and European
  Commission, under the European Union’s Horizon 2020 research and innovation program
  (ERC grant agreement no. 694539 to Ryuichi Shigemoto and the Marie Skłodowska-Curie
  grant agreement no. 665385 to Cihan Önal), and the Austrian Neuroscience Association
  for providing financial support and opportunities, which were important in allowing
  me to present my work. I also wish to thank the\r\nPreclinical Facility, especially
  Michael Schunn, for always welcoming me from my earliest days as an intern. My gratitude
  goes as well to the Miba Machine Shop, in particular Todor Asenov, Astrit Arslani,
  and Thomas Menner, whose technical expertise often saved the day."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Hüseyin C
  full_name: Önal, Hüseyin C
  id: 4659D740-F248-11E8-B48F-1D18A9856A87
  last_name: Önal
  orcid: 0000-0002-2771-2011
citation:
  ama: Önal C. Asymmetrical modulation of fear expression via GABAB receptors in the
    mouse medial habenula. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19271">10.15479/AT-ISTA-19271</a>
  apa: Önal, C. (2025). <i>Asymmetrical modulation of fear expression via GABAB receptors
    in the mouse medial habenula</i>. Institute of Science and Technology Austria.
    <a href="https://doi.org/10.15479/AT-ISTA-19271">https://doi.org/10.15479/AT-ISTA-19271</a>
  chicago: Önal, Cihan. “Asymmetrical Modulation of Fear Expression via GABAB Receptors
    in the Mouse Medial Habenula.” Institute of Science and Technology Austria, 2025.
    <a href="https://doi.org/10.15479/AT-ISTA-19271">https://doi.org/10.15479/AT-ISTA-19271</a>.
  ieee: C. Önal, “Asymmetrical modulation of fear expression via GABAB receptors in
    the mouse medial habenula,” Institute of Science and Technology Austria, 2025.
  ista: Önal C. 2025. Asymmetrical modulation of fear expression via GABAB receptors
    in the mouse medial habenula. Institute of Science and Technology Austria.
  mla: Önal, Cihan. <i>Asymmetrical Modulation of Fear Expression via GABAB Receptors
    in the Mouse Medial Habenula</i>. Institute of Science and Technology Austria,
    2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-19271">10.15479/AT-ISTA-19271</a>.
  short: C. Önal, Asymmetrical Modulation of Fear Expression via GABAB Receptors in
    the Mouse Medial Habenula, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-02-28T14:15:53Z
date_published: 2025-03-04T00:00:00Z
date_updated: 2026-04-07T12:40:42Z
day: '04'
ddc:
- '570'
- '571'
- '573'
- '599'
degree_awarded: PhD
department:
- _id: GradSch
- _id: RySh
doi: 10.15479/AT-ISTA-19271
ec_funded: 1
file:
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  date_updated: 2026-02-01T23:30:02Z
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  date_created: 2025-02-28T13:57:04Z
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file_date_updated: 2026-02-01T23:30:02Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/4.0/
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication_identifier:
  eissn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '9437'
    relation: part_of_dissertation
    status: public
  - id: '15084'
    relation: part_of_dissertation
    status: public
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: Asymmetrical modulation of fear expression via GABAB receptors in the mouse
  medial habenula
tmp:
  image: /images/cc_by_nc.png
  legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
  short: CC BY-NC (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...
---
_id: '18052'
abstract:
- lang: eng
  text: Sodium dodecyl sulfate-digested freeze-fracture replica labeling (SDS-FRL)
    is an electron microscope (EM) sample preparation technique which allows for high-resolution
    visualization of membrane proteins with high sensitivity. However, image acquisition
    of specific replica profiles such as synapses in a large field of EM view needs
    a valid experience and a long time for manual searching. Here, we describe how
    to utilize deep learning for automatizing image acquisition of specific profiles
    of interest in replica samples. This protocol facilitates the labor-intensive
    collection of EM images, in particular for rare profiles. We provide instructions
    for using SerialEM image acquisition software in conjunction with object detection
    by our newly developed deep learning software DarEM, to automatically acquire
    tilt series of all synapses in a selected region. We then show how to perform
    a mostly automated analysis of gold particle labeling in the acquired images by
    utilizing Darea software.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: This research was supported by the European Research Council Advanced
  Grant 694539 to RS and by the Scientific Service Units of IST Austria through resources
  provided by the Electron Microscopy Facility.
alternative_title:
- Neuromethods
article_processing_charge: No
author:
- first_name: David
  full_name: Kleindienst, David
  id: 42E121A4-F248-11E8-B48F-1D18A9856A87
  last_name: Kleindienst
- first_name: Tommaso
  full_name: Costanzo, Tommaso
  id: D93824F4-D9BA-11E9-BB12-F207E6697425
  last_name: Costanzo
  orcid: 0000-0001-9732-3815
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: 'Kleindienst D, Costanzo T, Shigemoto R. Automated Imaging and Analysis of
    Synapses in Freeze-Fracture Replica Samples with Deep Learning. In: Lübke JHR,
    Rollenhagen A, eds. <i>New Aspects in Analyzing the Synaptic Organization of the
    Brain</i>. 1st ed. New York: Springer Nature; 2024:123-137. doi:<a href="https://doi.org/10.1007/978-1-0716-4019-7_8">10.1007/978-1-0716-4019-7_8</a>'
  apa: 'Kleindienst, D., Costanzo, T., &#38; Shigemoto, R. (2024). Automated Imaging
    and Analysis of Synapses in Freeze-Fracture Replica Samples with Deep Learning.
    In J. H. R. Lübke &#38; A. Rollenhagen (Eds.), <i>New Aspects in Analyzing the
    Synaptic Organization of the Brain</i> (1st ed., pp. 123–137). New York: Springer
    Nature. <a href="https://doi.org/10.1007/978-1-0716-4019-7_8">https://doi.org/10.1007/978-1-0716-4019-7_8</a>'
  chicago: 'Kleindienst, David, Tommaso Costanzo, and Ryuichi Shigemoto. “Automated
    Imaging and Analysis of Synapses in Freeze-Fracture Replica Samples with Deep
    Learning.” In <i>New Aspects in Analyzing the Synaptic Organization of the Brain</i>,
    edited by Joachim H.R.  Lübke and Astrid Rollenhagen, 1st ed., 123–37. New York:
    Springer Nature, 2024. <a href="https://doi.org/10.1007/978-1-0716-4019-7_8">https://doi.org/10.1007/978-1-0716-4019-7_8</a>.'
  ieee: 'D. Kleindienst, T. Costanzo, and R. Shigemoto, “Automated Imaging and Analysis
    of Synapses in Freeze-Fracture Replica Samples with Deep Learning,” in <i>New
    Aspects in Analyzing the Synaptic Organization of the Brain</i>, 1st ed., J. H.
    R. Lübke and A. Rollenhagen, Eds. New York: Springer Nature, 2024, pp. 123–137.'
  ista: 'Kleindienst D, Costanzo T, Shigemoto R. 2024.Automated Imaging and Analysis
    of Synapses in Freeze-Fracture Replica Samples with Deep Learning. In: New Aspects
    in Analyzing the Synaptic Organization of the Brain. Neuromethods, , 123–137.'
  mla: Kleindienst, David, et al. “Automated Imaging and Analysis of Synapses in Freeze-Fracture
    Replica Samples with Deep Learning.” <i>New Aspects in Analyzing the Synaptic
    Organization of the Brain</i>, edited by Joachim H.R.  Lübke and Astrid Rollenhagen,
    1st ed., Springer Nature, 2024, pp. 123–37, doi:<a href="https://doi.org/10.1007/978-1-0716-4019-7_8">10.1007/978-1-0716-4019-7_8</a>.
  short: D. Kleindienst, T. Costanzo, R. Shigemoto, in:, J.H.R. Lübke, A. Rollenhagen
    (Eds.), New Aspects in Analyzing the Synaptic Organization of the Brain, 1st ed.,
    Springer Nature, New York, 2024, pp. 123–137.
corr_author: '1'
date_created: 2024-09-10T12:32:38Z
date_published: 2024-08-27T00:00:00Z
date_updated: 2025-04-14T07:27:15Z
day: '27'
department:
- _id: EM-Fac
- _id: RySh
doi: 10.1007/978-1-0716-4019-7_8
ec_funded: 1
edition: '1'
editor:
- first_name: 'Joachim H.R. '
  full_name: 'Lübke, Joachim H.R. '
  last_name: Lübke
- first_name: Astrid
  full_name: Rollenhagen, Astrid
  last_name: Rollenhagen
language:
- iso: eng
month: '08'
oa_version: None
page: 123-137
place: New York
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
publication: New Aspects in Analyzing the Synaptic Organization of the Brain
publication_identifier:
  eisbn:
  - '9781071640197'
  eissn:
  - 1940-6045
  isbn:
  - '9781071640180'
  issn:
  - 0893-2336
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Automated Imaging and Analysis of Synapses in Freeze-Fracture Replica Samples
  with Deep Learning
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2024'
...
---
APC_amount: 5887,8 EUR
OA_place: publisher
OA_type: hybrid
_id: '15084'
abstract:
- lang: eng
  text: "GABAB receptor (GBR) activation inhibits neurotransmitter release in axon
    terminals in the brain, except in medial habenula (MHb) terminals, which show
    robust potentiation. However, mechanisms underlying this enigmatic potentiation
    remain elusive. Here, we report that GBR activation on MHb terminals induces an
    activity-dependent transition from a facilitating, tonic to a depressing, phasic
    neurotransmitter release mode. This transition is accompanied by a 4.1-fold increase
    in readily releasable vesicle pool (RRP) size and a 3.5-fold increase of docked
    synaptic vesicles (SVs) at the presynaptic active zone (AZ). Strikingly, the depressing
    phasic release exhibits looser coupling distance than the tonic release. Furthermore,
    the tonic and phasic release are selectively affected by deletion of synaptoporin
    (SPO) and Ca\r\n            <jats:sup>2+</jats:sup>\r\n            -dependent
    activator protein for secretion 2 (CAPS2), respectively. SPO modulates augmentation,
    the short-term plasticity associated with tonic release, and CAPS2 retains the
    increased RRP for initial responses in phasic response trains. The cytosolic protein
    CAPS2 showed a SV-associated distribution similar to the vesicular transmembrane
    protein SPO, and they were colocalized in the same terminals. We developed the
    “Flash and Freeze-fracture” method, and revealed the release of SPO-associated
    vesicles in both tonic and phasic modes and activity-dependent recruitment of
    CAPS2 to the AZ during phasic release, which lasted several minutes. Overall,
    these results indicate that GBR activation translocates CAPS2 to the AZ along
    with the fusion of CAPS2-associated SVs, contributing to persistency of the RRP
    increase. Thus, we identified structural and molecular mechanisms underlying tonic
    and phasic neurotransmitter release and their transition by GBR activation in
    MHb terminals."
acknowledged_ssus:
- _id: M-Shop
- _id: PreCl
- _id: EM-Fac
acknowledgement: We thank Erwin Neher and Ipe Ninan for critical comments on the manuscript.
  This project has received funding from the European Research Council (ERC) and European
  Commission, under the European Union’s Horizon 2020 research and innovation program
  (ERC grant agreement no. 694539 to R.S. and the Marie Skłodowska-Curie grant agreement
  no. 665385 to C.Ö.). This study was supported by the Cooperative Study Program of
  Center for Animal Resources and Collaborative Study of NINS. We thank Kohgaku Eguchi
  for statistical analysis, Yu Kasugai for additional EM imaging, Robert Beattie for
  the design of the slice recovery chamber for Flash and Freeze experiments, Todor
  Asenov from the ISTA machine shop for custom part preparations for high-pressure
  freezing, the ISTA preclinical facility for animal caretaking, and the ISTA EM facilities
  for technical support.
article_number: e2301449121
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Peter
  full_name: Koppensteiner, Peter
  id: 3B8B25A8-F248-11E8-B48F-1D18A9856A87
  last_name: Koppensteiner
  orcid: 0000-0002-3509-1948
- first_name: Pradeep
  full_name: Bhandari, Pradeep
  id: 45EDD1BC-F248-11E8-B48F-1D18A9856A87
  last_name: Bhandari
  orcid: 0000-0003-0863-4481
- first_name: Hüseyin C
  full_name: Önal, Hüseyin C
  id: 4659D740-F248-11E8-B48F-1D18A9856A87
  last_name: Önal
  orcid: 0000-0002-2771-2011
- first_name: Carolina
  full_name: Borges Merjane, Carolina
  id: 4305C450-F248-11E8-B48F-1D18A9856A87
  last_name: Borges Merjane
  orcid: 0000-0003-0005-401X
- first_name: Elodie
  full_name: Le Monnier, Elodie
  id: 3B59276A-F248-11E8-B48F-1D18A9856A87
  last_name: Le Monnier
- first_name: Utsa
  full_name: Roy, Utsa
  id: 4d26cf11-5355-11ee-ae5a-eb05e255b9b2
  last_name: Roy
- first_name: Yukihiro
  full_name: Nakamura, Yukihiro
  last_name: Nakamura
- first_name: Tetsushi
  full_name: Sadakata, Tetsushi
  last_name: Sadakata
- first_name: Makoto
  full_name: Sanbo, Makoto
  last_name: Sanbo
- first_name: Masumi
  full_name: Hirabayashi, Masumi
  last_name: Hirabayashi
- first_name: JeongSeop
  full_name: Rhee, JeongSeop
  last_name: Rhee
- first_name: Nils
  full_name: Brose, Nils
  last_name: Brose
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: Koppensteiner P, Bhandari P, Önal C, et al. GABAB receptors induce phasic release
    from medial habenula terminals through activity-dependent recruitment of release-ready
    vesicles. <i>Proceedings of the National Academy of Sciences of the United States
    of America</i>. 2024;121(8). doi:<a href="https://doi.org/10.1073/pnas.2301449121">10.1073/pnas.2301449121</a>
  apa: Koppensteiner, P., Bhandari, P., Önal, C., Borges Merjane, C., Le Monnier,
    E., Roy, U., … Shigemoto, R. (2024). GABAB receptors induce phasic release from
    medial habenula terminals through activity-dependent recruitment of release-ready
    vesicles. <i>Proceedings of the National Academy of Sciences of the United States
    of America</i>. National Academy of Sciences. <a href="https://doi.org/10.1073/pnas.2301449121">https://doi.org/10.1073/pnas.2301449121</a>
  chicago: Koppensteiner, Peter, Pradeep Bhandari, Cihan Önal, Carolina Borges Merjane,
    Elodie Le Monnier, Utsa Roy, Yukihiro Nakamura, et al. “GABAB Receptors Induce
    Phasic Release from Medial Habenula Terminals through Activity-Dependent Recruitment
    of Release-Ready Vesicles.” <i>Proceedings of the National Academy of Sciences
    of the United States of America</i>. National Academy of Sciences, 2024. <a href="https://doi.org/10.1073/pnas.2301449121">https://doi.org/10.1073/pnas.2301449121</a>.
  ieee: P. Koppensteiner <i>et al.</i>, “GABAB receptors induce phasic release from
    medial habenula terminals through activity-dependent recruitment of release-ready
    vesicles,” <i>Proceedings of the National Academy of Sciences of the United States
    of America</i>, vol. 121, no. 8. National Academy of Sciences, 2024.
  ista: Koppensteiner P, Bhandari P, Önal C, Borges Merjane C, Le Monnier E, Roy U,
    Nakamura Y, Sadakata T, Sanbo M, Hirabayashi M, Rhee J, Brose N, Jonas PM, Shigemoto
    R. 2024. GABAB receptors induce phasic release from medial habenula terminals
    through activity-dependent recruitment of release-ready vesicles. Proceedings
    of the National Academy of Sciences of the United States of America. 121(8), e2301449121.
  mla: Koppensteiner, Peter, et al. “GABAB Receptors Induce Phasic Release from Medial
    Habenula Terminals through Activity-Dependent Recruitment of Release-Ready Vesicles.”
    <i>Proceedings of the National Academy of Sciences of the United States of America</i>,
    vol. 121, no. 8, e2301449121, National Academy of Sciences, 2024, doi:<a href="https://doi.org/10.1073/pnas.2301449121">10.1073/pnas.2301449121</a>.
  short: P. Koppensteiner, P. Bhandari, C. Önal, C. Borges Merjane, E. Le Monnier,
    U. Roy, Y. Nakamura, T. Sadakata, M. Sanbo, M. Hirabayashi, J. Rhee, N. Brose,
    P.M. Jonas, R. Shigemoto, Proceedings of the National Academy of Sciences of the
    United States of America 121 (2024).
corr_author: '1'
date_created: 2024-03-05T09:23:55Z
date_published: 2024-02-20T00:00:00Z
date_updated: 2026-05-03T22:30:24Z
day: '20'
ddc:
- '570'
department:
- _id: RySh
- _id: PeJo
doi: 10.1073/pnas.2301449121
ec_funded: 1
external_id:
  isi:
  - '001208567300006'
  pmid:
  - '38346189'
file:
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language:
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license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '02'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Proceedings of the National Academy of Sciences of the United States
  of America
publication_identifier:
  eissn:
  - 1091-6490
  issn:
  - 0027-8424
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
related_material:
  link:
  - description: News on ISTA Website
    relation: press_release
    url: https://ista.ac.at/en/news/neuronal-insights-flash-and-freeze-fracture/
  record:
  - id: '13173'
    relation: research_data
    status: public
  - id: '19271'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: GABAB receptors induce phasic release from medial habenula terminals through
  activity-dependent recruitment of release-ready vesicles
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: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 121
year: '2024'
...
---
_id: '13202'
abstract:
- lang: eng
  text: Phosphatidylinositol-4,5-bisphosphate (PI(4,5)P2) plays an essential role
    in neuronal activities through interaction with various proteins involved in signaling
    at membranes. However, the distribution pattern of PI(4,5)P2 and the association
    with these proteins on the neuronal cell membranes remain elusive. In this study,
    we established a method for visualizing PI(4,5)P2 by SDS-digested freeze-fracture
    replica labeling (SDS-FRL) to investigate the quantitative nanoscale distribution
    of PI(4,5)P2 in cryo-fixed brain. We demonstrate that PI(4,5)P2 forms tiny clusters
    with a mean size of ∼1000 nm2 rather than randomly distributed in cerebellar neuronal
    membranes in male C57BL/6J mice. These clusters show preferential accumulation
    in specific membrane compartments of different cell types, in particular, in Purkinje
    cell (PC) spines and granule cell (GC) presynaptic active zones. Furthermore,
    we revealed extensive association of PI(4,5)P2 with CaV2.1 and GIRK3 across different
    membrane compartments, whereas its association with mGluR1α was compartment specific.
    These results suggest that our SDS-FRL method provides valuable insights into
    the physiological functions of PI(4,5)P2 in neurons.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: This work was supported by The Institute of Science and Technology
  (IST) Austria, the European Union's Horizon 2020 Research and Innovation Program
  under the Marie Skłodowska-Curie Grant Agreement No. 793482 (to K.E.) and by the
  European Research Council (ERC) Grant Agreement No. 694539 (to R.S.). We thank Nicoleta
  Condruz (IST Austria, Klosterneuburg, Austria) for technical assistance with sample
  preparation, the Electron Microscopy Facility of IST Austria (Klosterneuburg, Austria)
  for technical support with EM works, Natalia Baranova (University of Vienna, Vienna,
  Austria) and Martin Loose (IST Austria, Klosterneuburg, Austria) for advice on liposome
  preparation, and Yugo Fukazawa (University of Fukui, Fukui, Japan) for comments.
article_processing_charge: No
article_type: original
author:
- first_name: Kohgaku
  full_name: Eguchi, Kohgaku
  id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
  last_name: Eguchi
  orcid: 0000-0002-6170-2546
- first_name: Elodie
  full_name: Le Monnier, Elodie
  id: 3B59276A-F248-11E8-B48F-1D18A9856A87
  last_name: Le Monnier
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: Eguchi K, Le Monnier E, Shigemoto R. Nanoscale phosphoinositide distribution
    on cell membranes of mouse cerebellar neurons. <i>The Journal of Neuroscience</i>.
    2023;43(23):4197-4216. doi:<a href="https://doi.org/10.1523/JNEUROSCI.1514-22.2023">10.1523/JNEUROSCI.1514-22.2023</a>
  apa: Eguchi, K., Le Monnier, E., &#38; Shigemoto, R. (2023). Nanoscale phosphoinositide
    distribution on cell membranes of mouse cerebellar neurons. <i>The Journal of
    Neuroscience</i>. Society for Neuroscience. <a href="https://doi.org/10.1523/JNEUROSCI.1514-22.2023">https://doi.org/10.1523/JNEUROSCI.1514-22.2023</a>
  chicago: Eguchi, Kohgaku, Elodie Le Monnier, and Ryuichi Shigemoto. “Nanoscale Phosphoinositide
    Distribution on Cell Membranes of Mouse Cerebellar Neurons.” <i>The Journal of
    Neuroscience</i>. Society for Neuroscience, 2023. <a href="https://doi.org/10.1523/JNEUROSCI.1514-22.2023">https://doi.org/10.1523/JNEUROSCI.1514-22.2023</a>.
  ieee: K. Eguchi, E. Le Monnier, and R. Shigemoto, “Nanoscale phosphoinositide distribution
    on cell membranes of mouse cerebellar neurons,” <i>The Journal of Neuroscience</i>,
    vol. 43, no. 23. Society for Neuroscience, pp. 4197–4216, 2023.
  ista: Eguchi K, Le Monnier E, Shigemoto R. 2023. Nanoscale phosphoinositide distribution
    on cell membranes of mouse cerebellar neurons. The Journal of Neuroscience. 43(23),
    4197–4216.
  mla: Eguchi, Kohgaku, et al. “Nanoscale Phosphoinositide Distribution on Cell Membranes
    of Mouse Cerebellar Neurons.” <i>The Journal of Neuroscience</i>, vol. 43, no.
    23, Society for Neuroscience, 2023, pp. 4197–216, doi:<a href="https://doi.org/10.1523/JNEUROSCI.1514-22.2023">10.1523/JNEUROSCI.1514-22.2023</a>.
  short: K. Eguchi, E. Le Monnier, R. Shigemoto, The Journal of Neuroscience 43 (2023)
    4197–4216.
corr_author: '1'
date_created: 2023-07-09T22:01:12Z
date_published: 2023-06-07T00:00:00Z
date_updated: 2025-04-14T07:27:15Z
day: '07'
ddc:
- '570'
department:
- _id: RySh
doi: 10.1523/JNEUROSCI.1514-22.2023
ec_funded: 1
external_id:
  isi:
  - '001020132100005'
  pmid:
  - '37160366'
file:
- access_level: open_access
  checksum: 70b2141870e0bf1c94fd343e18fdbc32
  content_type: application/pdf
  creator: alisjak
  date_created: 2023-07-10T09:04:58Z
  date_updated: 2023-07-10T09:04:58Z
  file_id: '13205'
  file_name: 2023_JN_Eguchi.pdf
  file_size: 7794425
  relation: main_file
  success: 1
file_date_updated: 2023-07-10T09:04:58Z
has_accepted_license: '1'
intvolume: '        43'
isi: 1
issue: '23'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 4197-4216
pmid: 1
project:
- _id: 2659CC84-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '793482'
  name: 'Ultrastructural analysis of phosphoinositides in nerve terminals: distribution,
    dynamics and physiological roles in synaptic transmission'
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
publication: The Journal of Neuroscience
publication_identifier:
  eissn:
  - 1529-2401
  issn:
  - 0270-6474
publication_status: published
publisher: Society for Neuroscience
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nanoscale phosphoinositide distribution on cell membranes of mouse cerebellar
  neurons
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: 43
year: '2023'
...
---
_id: '10889'
abstract:
- lang: eng
  text: Genetically encoded tags have introduced extensive lines of application from
    purification of tagged proteins to their visualization at the single molecular,
    cellular, histological and whole-body levels. Combined with other rapidly developing
    technologies such as clustered regularly interspaced palindromic repeats (CRISPR)/CRISPR-associated
    protein 9 (Cas9) system, proteomics, super-resolution microscopy and proximity
    labeling, a large variety of genetically encoded tags have been developed in the
    last two decades. In this review, I focus on the current status of tag development
    for electron microscopic (EM) visualization of proteins with metal particle labeling.
    Compared with conventional immunoelectron microscopy using gold particles, tag-mediated
    metal particle labeling has several advantages that could potentially improve
    the sensitivity, spatial and temporal resolution, and applicability to a wide
    range of proteins of interest (POIs). It may enable researchers to detect single
    molecules in situ, allowing the quantitative measurement of absolute numbers and
    exact localization patterns of POI in the ultrastructural context. Thus, genetically
    encoded tags for EM could revolutionize the field as green fluorescence protein
    did for light microscopy, although we still have many challenges to overcome before
    reaching this goal.
acknowledgement: European Research Council Advanced Grant (694539 to R.S.).
article_processing_charge: No
article_type: original
author:
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: Shigemoto R. Electron microscopic visualization of single molecules by tag-mediated
    metal particle labeling. <i>Microscopy</i>. 2022;71(Supplement_1):i72-i80. doi:<a
    href="https://doi.org/10.1093/jmicro/dfab048">10.1093/jmicro/dfab048</a>
  apa: Shigemoto, R. (2022). Electron microscopic visualization of single molecules
    by tag-mediated metal particle labeling. <i>Microscopy</i>. Oxford University
    Press. <a href="https://doi.org/10.1093/jmicro/dfab048">https://doi.org/10.1093/jmicro/dfab048</a>
  chicago: Shigemoto, Ryuichi. “Electron Microscopic Visualization of Single Molecules
    by Tag-Mediated Metal Particle Labeling.” <i>Microscopy</i>. Oxford University
    Press, 2022. <a href="https://doi.org/10.1093/jmicro/dfab048">https://doi.org/10.1093/jmicro/dfab048</a>.
  ieee: R. Shigemoto, “Electron microscopic visualization of single molecules by tag-mediated
    metal particle labeling,” <i>Microscopy</i>, vol. 71, no. Supplement_1. Oxford
    University Press, pp. i72–i80, 2022.
  ista: Shigemoto R. 2022. Electron microscopic visualization of single molecules
    by tag-mediated metal particle labeling. Microscopy. 71(Supplement_1), i72–i80.
  mla: Shigemoto, Ryuichi. “Electron Microscopic Visualization of Single Molecules
    by Tag-Mediated Metal Particle Labeling.” <i>Microscopy</i>, vol. 71, no. Supplement_1,
    Oxford University Press, 2022, pp. i72–80, doi:<a href="https://doi.org/10.1093/jmicro/dfab048">10.1093/jmicro/dfab048</a>.
  short: R. Shigemoto, Microscopy 71 (2022) i72–i80.
corr_author: '1'
date_created: 2022-03-20T23:01:39Z
date_published: 2022-03-01T00:00:00Z
date_updated: 2025-05-14T11:05:40Z
day: '01'
department:
- _id: RySh
doi: 10.1093/jmicro/dfab048
ec_funded: 1
external_id:
  isi:
  - '000768384100011'
  pmid:
  - '35275179'
intvolume: '        71'
isi: 1
issue: Supplement_1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1093/jmicro/dfab048
month: '03'
oa: 1
oa_version: Published Version
page: i72-i80
pmid: 1
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
publication: Microscopy
publication_identifier:
  eissn:
  - 2050-5701
  issn:
  - 2050-5698
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Electron microscopic visualization of single molecules by tag-mediated metal
  particle labeling
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 71
year: '2022'
...
---
_id: '10890'
abstract:
- lang: eng
  text: Upon the arrival of action potentials at nerve terminals, neurotransmitters
    are released from synaptic vesicles (SVs) by exocytosis. CaV2.1, 2.2, and 2.3
    are the major subunits of the voltage-gated calcium channel (VGCC) responsible
    for increasing intraterminal calcium levels and triggering SV exocytosis in the
    central nervous system (CNS) synapses. The two-dimensional analysis of CaV2 distributions
    using sodium dodecyl sulfate (SDS)-digested freeze-fracture replica labeling (SDS-FRL)
    has revealed their numbers, densities, and nanoscale clustering patterns in individual
    presynaptic active zones. The variation in these properties affects the coupling
    of VGCCs with calcium sensors on SVs, synaptic efficacy, and temporal precision
    of transmission. In this study, we summarize how the morphological parameters
    of CaV2 distribution obtained using SDS-FRL differ depending on the different
    types of synapses and could correspond to functional properties in synaptic transmission.
acknowledgement: "This work was supported by the European Research Council advanced
  grant No. 694539 and the joint German-Austrian DFG and FWF project SYNABS (FWF:
  I-4638-B) to RS.\r\nThe authors thank Walter Kaufmann for his critical comments
  on the manuscript."
article_number: '846615'
article_processing_charge: No
article_type: original
author:
- first_name: Kohgaku
  full_name: Eguchi, Kohgaku
  id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
  last_name: Eguchi
  orcid: 0000-0002-6170-2546
- first_name: Jacqueline-Claire
  full_name: Montanaro-Punzengruber, Jacqueline-Claire
  id: 3786AB44-F248-11E8-B48F-1D18A9856A87
  last_name: Montanaro-Punzengruber
- first_name: Elodie
  full_name: Le Monnier, Elodie
  id: 3B59276A-F248-11E8-B48F-1D18A9856A87
  last_name: Le Monnier
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: Eguchi K, Montanaro-Punzengruber J-C, Le Monnier E, Shigemoto R. The number
    and distinct clustering patterns of voltage-gated Calcium channels in nerve terminals.
    <i>Frontiers in Neuroanatomy</i>. 2022;16. doi:<a href="https://doi.org/10.3389/fnana.2022.846615">10.3389/fnana.2022.846615</a>
  apa: Eguchi, K., Montanaro-Punzengruber, J.-C., Le Monnier, E., &#38; Shigemoto,
    R. (2022). The number and distinct clustering patterns of voltage-gated Calcium
    channels in nerve terminals. <i>Frontiers in Neuroanatomy</i>. Frontiers. <a href="https://doi.org/10.3389/fnana.2022.846615">https://doi.org/10.3389/fnana.2022.846615</a>
  chicago: Eguchi, Kohgaku, Jacqueline-Claire Montanaro-Punzengruber, Elodie Le Monnier,
    and Ryuichi Shigemoto. “The Number and Distinct Clustering Patterns of Voltage-Gated
    Calcium Channels in Nerve Terminals.” <i>Frontiers in Neuroanatomy</i>. Frontiers,
    2022. <a href="https://doi.org/10.3389/fnana.2022.846615">https://doi.org/10.3389/fnana.2022.846615</a>.
  ieee: K. Eguchi, J.-C. Montanaro-Punzengruber, E. Le Monnier, and R. Shigemoto,
    “The number and distinct clustering patterns of voltage-gated Calcium channels
    in nerve terminals,” <i>Frontiers in Neuroanatomy</i>, vol. 16. Frontiers, 2022.
  ista: Eguchi K, Montanaro-Punzengruber J-C, Le Monnier E, Shigemoto R. 2022. The
    number and distinct clustering patterns of voltage-gated Calcium channels in nerve
    terminals. Frontiers in Neuroanatomy. 16, 846615.
  mla: Eguchi, Kohgaku, et al. “The Number and Distinct Clustering Patterns of Voltage-Gated
    Calcium Channels in Nerve Terminals.” <i>Frontiers in Neuroanatomy</i>, vol. 16,
    846615, Frontiers, 2022, doi:<a href="https://doi.org/10.3389/fnana.2022.846615">10.3389/fnana.2022.846615</a>.
  short: K. Eguchi, J.-C. Montanaro-Punzengruber, E. Le Monnier, R. Shigemoto, Frontiers
    in Neuroanatomy 16 (2022).
corr_author: '1'
date_created: 2022-03-20T23:01:39Z
date_published: 2022-02-24T00:00:00Z
date_updated: 2026-04-16T08:18:54Z
day: '24'
ddc:
- '570'
department:
- _id: RySh
doi: 10.3389/fnana.2022.846615
ec_funded: 1
external_id:
  isi:
  - '000766662700001'
  pmid:
  - '35280978'
file:
- access_level: open_access
  checksum: 51ec9b90e7da919e22c01a15489eaacd
  content_type: application/pdf
  creator: dernst
  date_created: 2022-03-21T09:41:19Z
  date_updated: 2022-03-21T09:41:19Z
  file_id: '10911'
  file_name: 2022_FrontiersNeuroanatomy_Eguchi.pdf
  file_size: 2416395
  relation: main_file
  success: 1
file_date_updated: 2022-03-21T09:41:19Z
has_accepted_license: '1'
intvolume: '        16'
isi: 1
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 05970B30-7A3F-11EA-A408-12923DDC885E
  grant_number: I04638
  name: LGI1 antibody-induced pathophysiology in synapses
publication: Frontiers in Neuroanatomy
publication_identifier:
  eissn:
  - 1662-5129
publication_status: published
publisher: Frontiers
quality_controlled: '1'
scopus_import: '1'
status: public
title: The number and distinct clustering patterns of voltage-gated Calcium channels
  in nerve terminals
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: 16
year: '2022'
...
---
_id: '9330'
abstract:
- lang: eng
  text: In nerve cells the genes encoding for α2δ subunits of voltage-gated calcium
    channels have been linked to synaptic functions and neurological disease. Here
    we show that α2δ subunits are essential for the formation and organization of
    glutamatergic synapses. Using a cellular α2δ subunit triple-knockout/knockdown
    model, we demonstrate a failure in presynaptic differentiation evidenced by defective
    presynaptic calcium channel clustering and calcium influx, smaller presynaptic
    active zones, and a strongly reduced accumulation of presynaptic vesicle-associated
    proteins (synapsin and vGLUT). The presynaptic defect is associated with the downscaling
    of postsynaptic AMPA receptors and the postsynaptic density. The role of α2δ isoforms
    as synaptic organizers is highly redundant, as each individual α2δ isoform can
    rescue presynaptic calcium channel trafficking and expression of synaptic proteins.
    Moreover, α2δ-2 and α2δ-3 with mutated metal ion-dependent adhesion sites can
    fully rescue presynaptic synapsin expression but only partially calcium channel
    trafficking, suggesting that the regulatory role of α2δ subunits is independent
    from its role as a calcium channel subunit. Our findings influence the current
    view on excitatory synapse formation. First, our study suggests that postsynaptic
    differentiation is secondary to presynaptic differentiation. Second, the dependence
    of presynaptic differentiation on α2δ implicates α2δ subunits as potential nucleation
    points for the organization of synapses. Finally, our results suggest that α2δ
    subunits act as transsynaptic organizers of glutamatergic synapses, thereby aligning
    the synaptic active zone with the postsynaptic density.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: "We thank Arnold Schwartz for providing α2δ-1 knockout mice; Ariane
  Benedetti, Sabine Baumgartner, Sandra Demetz, and Irene Mahlknecht for technical
  support; Nadine Ortner and Andreas Lieb for electrophysiological experiments; the
  team of the Electron Microscopy Facility at the Institute of Science and Technology
  Austria for technical support related to ultrastructural analysis; Hermann Dietrich
  and Anja Beierfuß and her team for animal care; Jutta Engel and Jörg Striessnig
  for critical discussions; and Bruno Benedetti and Bernhard Flucher for critical
  discussions and reading the manuscript. This study was supported by Austrian Science
  Fund Grants P24079, F44060, F44150, and DOC30-B30 (to G.J.O.) and T855 (to M.C.),
  European Research Council Grant AdG 694539 (to R.S.), Deutsche Forschungsgemeinschaft\r\nGrant
  SFB1348-TP A03 (to M.M.), and Interdisziplinäre Zentrum für Klinische Forschung
  Münster Grant Mi3/004/19 (to M.M.). This work is part of the PhD theses of C.L.S.,
  S.M.G., and C.A."
article_processing_charge: No
article_type: original
author:
- first_name: Clemens L.
  full_name: Schöpf, Clemens L.
  last_name: Schöpf
- first_name: Cornelia
  full_name: Ablinger, Cornelia
  last_name: Ablinger
- first_name: Stefanie M.
  full_name: Geisler, Stefanie M.
  last_name: Geisler
- first_name: Ruslan I.
  full_name: Stanika, Ruslan I.
  last_name: Stanika
- first_name: Marta
  full_name: Campiglio, Marta
  last_name: Campiglio
- first_name: Walter
  full_name: Kaufmann, Walter
  id: 3F99E422-F248-11E8-B48F-1D18A9856A87
  last_name: Kaufmann
  orcid: 0000-0001-9735-5315
- first_name: Benedikt
  full_name: Nimmervoll, Benedikt
  last_name: Nimmervoll
- first_name: Bettina
  full_name: Schlick, Bettina
  last_name: Schlick
- first_name: Johannes
  full_name: Brockhaus, Johannes
  last_name: Brockhaus
- first_name: Markus
  full_name: Missler, Markus
  last_name: Missler
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
- first_name: Gerald J.
  full_name: Obermair, Gerald J.
  last_name: Obermair
citation:
  ama: Schöpf CL, Ablinger C, Geisler SM, et al. Presynaptic α2δ subunits are key
    organizers of glutamatergic synapses. <i>Proceedings of the National Academy of
    Sciences of the United States of America</i>. 2021;118(14). doi:<a href="https://doi.org/10.1073/pnas.1920827118">10.1073/pnas.1920827118</a>
  apa: Schöpf, C. L., Ablinger, C., Geisler, S. M., Stanika, R. I., Campiglio, M.,
    Kaufmann, W., … Obermair, G. J. (2021). Presynaptic α2δ subunits are key organizers
    of glutamatergic synapses. <i>Proceedings of the National Academy of Sciences
    of the United States of America</i>. National Academy of Sciences. <a href="https://doi.org/10.1073/pnas.1920827118">https://doi.org/10.1073/pnas.1920827118</a>
  chicago: Schöpf, Clemens L., Cornelia Ablinger, Stefanie M. Geisler, Ruslan I. Stanika,
    Marta Campiglio, Walter Kaufmann, Benedikt Nimmervoll, et al. “Presynaptic Α2δ
    Subunits Are Key Organizers of Glutamatergic Synapses.” <i>Proceedings of the
    National Academy of Sciences of the United States of America</i>. National Academy
    of Sciences, 2021. <a href="https://doi.org/10.1073/pnas.1920827118">https://doi.org/10.1073/pnas.1920827118</a>.
  ieee: C. L. Schöpf <i>et al.</i>, “Presynaptic α2δ subunits are key organizers of
    glutamatergic synapses,” <i>Proceedings of the National Academy of Sciences of
    the United States of America</i>, vol. 118, no. 14. National Academy of Sciences,
    2021.
  ista: Schöpf CL, Ablinger C, Geisler SM, Stanika RI, Campiglio M, Kaufmann W, Nimmervoll
    B, Schlick B, Brockhaus J, Missler M, Shigemoto R, Obermair GJ. 2021. Presynaptic
    α2δ subunits are key organizers of glutamatergic synapses. Proceedings of the
    National Academy of Sciences of the United States of America. 118(14).
  mla: Schöpf, Clemens L., et al. “Presynaptic Α2δ Subunits Are Key Organizers of
    Glutamatergic Synapses.” <i>Proceedings of the National Academy of Sciences of
    the United States of America</i>, vol. 118, no. 14, National Academy of Sciences,
    2021, doi:<a href="https://doi.org/10.1073/pnas.1920827118">10.1073/pnas.1920827118</a>.
  short: C.L. Schöpf, C. Ablinger, S.M. Geisler, R.I. Stanika, M. Campiglio, W. Kaufmann,
    B. Nimmervoll, B. Schlick, J. Brockhaus, M. Missler, R. Shigemoto, G.J. Obermair,
    Proceedings of the National Academy of Sciences of the United States of America
    118 (2021).
date_created: 2021-04-18T22:01:40Z
date_published: 2021-04-06T00:00:00Z
date_updated: 2025-06-12T06:56:21Z
day: '06'
ddc:
- '570'
department:
- _id: EM-Fac
- _id: RySh
doi: 10.1073/pnas.1920827118
ec_funded: 1
external_id:
  isi:
  - '000637398300002'
  pmid:
  - '33782113'
file:
- access_level: open_access
  checksum: dd014f68ae9d7d8d8fc4139a24e04506
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  creator: dernst
  date_created: 2021-04-19T10:10:56Z
  date_updated: 2021-04-19T10:10:56Z
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has_accepted_license: '1'
intvolume: '       118'
isi: 1
issue: '14'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
publication: Proceedings of the National Academy of Sciences of the United States
  of America
publication_identifier:
  eissn:
  - 1091-6490
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Presynaptic α2δ subunits are key organizers of glutamatergic synapses
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: 118
year: '2021'
...
---
_id: '9641'
abstract:
- lang: eng
  text: At the encounter with a novel environment, contextual memory formation is
    greatly enhanced, accompanied with increased arousal and active exploration. Although
    this phenomenon has been widely observed in animal and human daily life, how the
    novelty in the environment is detected and contributes to contextual memory formation
    has lately started to be unveiled. The hippocampus has been studied for many decades
    for its largely known roles in encoding spatial memory, and a growing body of
    evidence indicates a differential involvement of dorsal and ventral hippocampal
    divisions in novelty detection. In this brief review article, we discuss the recent
    findings of the role of mossy cells in the ventral hippocampal moiety in novelty
    detection and put them in perspective with other novelty-related pathways in the
    hippocampus. We propose a mechanism for novelty-driven memory acquisition in the
    dentate gyrus by the direct projection of ventral mossy cells to dorsal dentate
    granule cells. By this projection, the ventral hippocampus sends novelty signals
    to the dorsal hippocampus, opening a gate for memory encoding in dentate granule
    cells based on information coming from the entorhinal cortex. We conclude that,
    contrary to the presently accepted functional independence, the dorsal and ventral
    hippocampi cooperate to link the novelty and contextual information, and this
    dorso-ventral interaction is crucial for the novelty-dependent memory formation.
acknowledgement: This work was supported by a European Research Council Advanced Grant
  694539 to Ryuichi Shigemoto.
article_number: '107486'
article_processing_charge: No
article_type: original
author:
- first_name: Felipe
  full_name: Fredes, Felipe
  last_name: Fredes
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: Fredes F, Shigemoto R. The role of hippocampal mossy cells in novelty detection.
    <i>Neurobiology of Learning and Memory</i>. 2021;183. doi:<a href="https://doi.org/10.1016/j.nlm.2021.107486">10.1016/j.nlm.2021.107486</a>
  apa: Fredes, F., &#38; Shigemoto, R. (2021). The role of hippocampal mossy cells
    in novelty detection. <i>Neurobiology of Learning and Memory</i>. Elsevier. <a
    href="https://doi.org/10.1016/j.nlm.2021.107486">https://doi.org/10.1016/j.nlm.2021.107486</a>
  chicago: Fredes, Felipe, and Ryuichi Shigemoto. “The Role of Hippocampal Mossy Cells
    in Novelty Detection.” <i>Neurobiology of Learning and Memory</i>. Elsevier, 2021.
    <a href="https://doi.org/10.1016/j.nlm.2021.107486">https://doi.org/10.1016/j.nlm.2021.107486</a>.
  ieee: F. Fredes and R. Shigemoto, “The role of hippocampal mossy cells in novelty
    detection,” <i>Neurobiology of Learning and Memory</i>, vol. 183. Elsevier, 2021.
  ista: Fredes F, Shigemoto R. 2021. The role of hippocampal mossy cells in novelty
    detection. Neurobiology of Learning and Memory. 183, 107486.
  mla: Fredes, Felipe, and Ryuichi Shigemoto. “The Role of Hippocampal Mossy Cells
    in Novelty Detection.” <i>Neurobiology of Learning and Memory</i>, vol. 183, 107486,
    Elsevier, 2021, doi:<a href="https://doi.org/10.1016/j.nlm.2021.107486">10.1016/j.nlm.2021.107486</a>.
  short: F. Fredes, R. Shigemoto, Neurobiology of Learning and Memory 183 (2021).
date_created: 2021-07-11T22:01:16Z
date_published: 2021-06-30T00:00:00Z
date_updated: 2025-07-10T12:02:00Z
day: '30'
ddc:
- '610'
department:
- _id: RySh
doi: 10.1016/j.nlm.2021.107486
ec_funded: 1
external_id:
  isi:
  - '000677694900004'
  pmid:
  - '34214666'
file:
- access_level: open_access
  checksum: 8e8298a9e8c7df146ad23f32c2a63929
  content_type: application/pdf
  creator: cziletti
  date_created: 2021-07-19T13:46:06Z
  date_updated: 2021-07-19T13:46:06Z
  file_id: '9694'
  file_name: 2021_NeurobLearnMemory_Fredes.pdf
  file_size: 1994793
  relation: main_file
  success: 1
file_date_updated: 2021-07-19T13:46:06Z
has_accepted_license: '1'
intvolume: '       183'
isi: 1
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
publication: Neurobiology of Learning and Memory
publication_identifier:
  eissn:
  - 1095-9564
  issn:
  - 1074-7427
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: The role of hippocampal mossy cells in novelty detection
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: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 183
year: '2021'
...
---
_id: '7551'
abstract:
- lang: eng
  text: Novelty facilitates formation of memories. The detection of novelty and storage
    of contextual memories are both mediated by the hippocampus, yet the mechanisms
    that link these two functions remain to be defined. Dentate granule cells (GCs)
    of the dorsal hippocampus fire upon novelty exposure forming engrams of contextual
    memory. However, their key excitatory inputs from the entorhinal cortex are not
    responsive to novelty and are insufficient to make dorsal GCs fire reliably. Here
    we uncover a powerful glutamatergic pathway to dorsal GCs from ventral hippocampal
    mossy cells (MCs) that relays novelty, and is necessary and sufficient for driving
    dorsal GCs activation. Furthermore, manipulation of ventral MCs activity bidirectionally
    regulates novelty-induced contextual memory acquisition. Our results show that
    ventral MCs activity controls memory formation through an intra-hippocampal interaction
    mechanism gated by novelty.
acknowledgement: We thank Peter Jonas and Peter Somogyi for critically reading the
  manuscript, Satoshi Kida for helpful discussion, Taijia Makinen for providing the
  Prox1-creERT2 mouse line, and Hiromu Yawo for the VAMP2-Venus construct. We also
  thank Vivek Jayaraman, Ph.D.; Rex A. Kerr, Ph.D.; Douglas S. Kim, Ph.D.; Loren L.
  Looger, Ph.D.; and Karel Svoboda, Ph.D. from the GENIE Project, Janelia Farm Research
  Campus, Howard Hughes Medical Institute for the viral constructs used for GCaMP6s
  expression. We also thank Jacqueline Montanaro, Vanessa Zheden, David Kleindienst,
  and Laura Burnett for technical assistance, as well as Robert Beattie for imaging
  assistance. This work was supported by a European Research Council Advanced Grant
  694539 to R.S.
article_processing_charge: No
article_type: original
author:
- first_name: Felipe A
  full_name: Fredes Tolorza, Felipe A
  id: 384825DA-F248-11E8-B48F-1D18A9856A87
  last_name: Fredes Tolorza
- first_name: Maria A
  full_name: Silva Sifuentes, Maria A
  id: 371B3D6E-F248-11E8-B48F-1D18A9856A87
  last_name: Silva Sifuentes
- first_name: Peter
  full_name: Koppensteiner, Peter
  id: 3B8B25A8-F248-11E8-B48F-1D18A9856A87
  last_name: Koppensteiner
  orcid: 0000-0002-3509-1948
- first_name: Kenta
  full_name: Kobayashi, Kenta
  last_name: Kobayashi
- first_name: Maximilian A
  full_name: Jösch, Maximilian A
  id: 2BD278E6-F248-11E8-B48F-1D18A9856A87
  last_name: Jösch
  orcid: 0000-0002-3937-1330
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: Fredes Tolorza FA, Silva Sifuentes MA, Koppensteiner P, Kobayashi K, Jösch
    MA, Shigemoto R. Ventro-dorsal hippocampal pathway gates novelty-induced contextual
    memory formation. <i>Current Biology</i>. 2021;31(1):P25-38.E5. doi:<a href="https://doi.org/10.1016/j.cub.2020.09.074">10.1016/j.cub.2020.09.074</a>
  apa: Fredes Tolorza, F. A., Silva Sifuentes, M. A., Koppensteiner, P., Kobayashi,
    K., Jösch, M. A., &#38; Shigemoto, R. (2021). Ventro-dorsal hippocampal pathway
    gates novelty-induced contextual memory formation. <i>Current Biology</i>. Elsevier.
    <a href="https://doi.org/10.1016/j.cub.2020.09.074">https://doi.org/10.1016/j.cub.2020.09.074</a>
  chicago: Fredes Tolorza, Felipe A, Maria A Silva Sifuentes, Peter Koppensteiner,
    Kenta Kobayashi, Maximilian A Jösch, and Ryuichi Shigemoto. “Ventro-Dorsal Hippocampal
    Pathway Gates Novelty-Induced Contextual Memory Formation.” <i>Current Biology</i>.
    Elsevier, 2021. <a href="https://doi.org/10.1016/j.cub.2020.09.074">https://doi.org/10.1016/j.cub.2020.09.074</a>.
  ieee: F. A. Fredes Tolorza, M. A. Silva Sifuentes, P. Koppensteiner, K. Kobayashi,
    M. A. Jösch, and R. Shigemoto, “Ventro-dorsal hippocampal pathway gates novelty-induced
    contextual memory formation,” <i>Current Biology</i>, vol. 31, no. 1. Elsevier,
    p. P25–38.E5, 2021.
  ista: Fredes Tolorza FA, Silva Sifuentes MA, Koppensteiner P, Kobayashi K, Jösch
    MA, Shigemoto R. 2021. Ventro-dorsal hippocampal pathway gates novelty-induced
    contextual memory formation. Current Biology. 31(1), P25–38.E5.
  mla: Fredes Tolorza, Felipe A., et al. “Ventro-Dorsal Hippocampal Pathway Gates
    Novelty-Induced Contextual Memory Formation.” <i>Current Biology</i>, vol. 31,
    no. 1, Elsevier, 2021, p. P25–38.E5, doi:<a href="https://doi.org/10.1016/j.cub.2020.09.074">10.1016/j.cub.2020.09.074</a>.
  short: F.A. Fredes Tolorza, M.A. Silva Sifuentes, P. Koppensteiner, K. Kobayashi,
    M.A. Jösch, R. Shigemoto, Current Biology 31 (2021) P25–38.E5.
date_created: 2020-02-28T10:56:18Z
date_published: 2021-01-11T00:00:00Z
date_updated: 2025-06-12T06:54:22Z
day: '11'
ddc:
- '570'
department:
- _id: MaJö
- _id: RySh
doi: 10.1016/j.cub.2020.09.074
ec_funded: 1
external_id:
  isi:
  - '000614361000020'
  pmid:
  - '33065009'
file:
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  date_created: 2020-10-19T13:31:28Z
  date_updated: 2020-10-19T13:31:28Z
  file_id: '8678'
  file_name: 2021_CurrentBiology_Fredes.pdf
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  relation: main_file
  success: 1
file_date_updated: 2020-10-19T13:31:28Z
has_accepted_license: '1'
intvolume: '        31'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: P25-38.E5
pmid: 1
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
publication: Current Biology
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/remembering-novelty/
scopus_import: '1'
status: public
title: Ventro-dorsal hippocampal pathway gates novelty-induced contextual memory formation
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: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 31
year: '2021'
...
---
_id: '9437'
abstract:
- lang: eng
  text: The synaptic connection from medial habenula (MHb) to interpeduncular nucleus
    (IPN) is critical for emotion-related behaviors and uniquely expresses R-type
    Ca2+ channels (Cav2.3) and auxiliary GABAB receptor (GBR) subunits, the K+-channel
    tetramerization domain-containing proteins (KCTDs). Activation of GBRs facilitates
    or inhibits transmitter release from MHb terminals depending on the IPN subnucleus,
    but the role of KCTDs is unknown. We therefore examined the localization and function
    of Cav2.3, GBRs, and KCTDs in this pathway in mice. We show in heterologous cells
    that KCTD8 and KCTD12b directly bind to Cav2.3 and that KCTD8 potentiates Cav2.3
    currents in the absence of GBRs. In the rostral IPN, KCTD8, KCTD12b, and Cav2.3
    co-localize at the presynaptic active zone. Genetic deletion indicated a bidirectional
    modulation of Cav2.3-mediated release by these KCTDs with a compensatory increase
    of KCTD8 in the active zone in KCTD12b-deficient mice. The interaction of Cav2.3
    with KCTDs therefore scales synaptic strength independent of GBR activation.
acknowledgement: We are grateful to Akari Hagiwara and Toshihisa Ohtsuka for CAST
  antibody, and Masahiko Watanabe for neurexin antibody. We thank David Adams for
  kindly providing the stable Cav2.3 cell line. Cav2.3 KO mice were kindly provided
  by Tsutomu Tanabe. This project has received funding from the European Research
  Council (ERC) and European Commission (EC), under the European Union’s Horizon 2020
  research and innovation programme (ERC grant agreement no. 694539 to Ryuichi Shigemoto,
  no. 692692 to Peter Jonas, and the Marie Skłodowska-Curie grant agreement no. 665385
  to Cihan Önal), the Swiss National Science Foundation Grant 31003A-172881 to Bernhard
  Bettler and Deutsche Forschungsgemeinschaft (For 2143) and BIOSS-2 to Akos Kulik.
article_number: e68274
article_processing_charge: No
article_type: original
author:
- first_name: Pradeep
  full_name: Bhandari, Pradeep
  id: 45EDD1BC-F248-11E8-B48F-1D18A9856A87
  last_name: Bhandari
  orcid: 0000-0003-0863-4481
- first_name: David H
  full_name: Vandael, David H
  id: 3AE48E0A-F248-11E8-B48F-1D18A9856A87
  last_name: Vandael
  orcid: 0000-0001-7577-1676
- first_name: Diego
  full_name: Fernández-Fernández, Diego
  last_name: Fernández-Fernández
- first_name: Thorsten
  full_name: Fritzius, Thorsten
  last_name: Fritzius
- first_name: David
  full_name: Kleindienst, David
  id: 42E121A4-F248-11E8-B48F-1D18A9856A87
  last_name: Kleindienst
- first_name: Hüseyin C
  full_name: Önal, Hüseyin C
  id: 4659D740-F248-11E8-B48F-1D18A9856A87
  last_name: Önal
  orcid: 0000-0002-2771-2011
- first_name: Jacqueline-Claire
  full_name: Montanaro-Punzengruber, Jacqueline-Claire
  id: 3786AB44-F248-11E8-B48F-1D18A9856A87
  last_name: Montanaro-Punzengruber
- first_name: Martin
  full_name: Gassmann, Martin
  last_name: Gassmann
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
- first_name: Akos
  full_name: Kulik, Akos
  last_name: Kulik
- first_name: Bernhard
  full_name: Bettler, Bernhard
  last_name: Bettler
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
- first_name: Peter
  full_name: Koppensteiner, Peter
  id: 3B8B25A8-F248-11E8-B48F-1D18A9856A87
  last_name: Koppensteiner
  orcid: 0000-0002-3509-1948
citation:
  ama: Bhandari P, Vandael DH, Fernández-Fernández D, et al. GABAB receptor auxiliary
    subunits modulate Cav2.3-mediated release from medial habenula terminals. <i>eLife</i>.
    2021;10. doi:<a href="https://doi.org/10.7554/ELIFE.68274">10.7554/ELIFE.68274</a>
  apa: Bhandari, P., Vandael, D. H., Fernández-Fernández, D., Fritzius, T., Kleindienst,
    D., Önal, C., … Koppensteiner, P. (2021). GABAB receptor auxiliary subunits modulate
    Cav2.3-mediated release from medial habenula terminals. <i>ELife</i>. eLife Sciences
    Publications. <a href="https://doi.org/10.7554/ELIFE.68274">https://doi.org/10.7554/ELIFE.68274</a>
  chicago: Bhandari, Pradeep, David H Vandael, Diego Fernández-Fernández, Thorsten
    Fritzius, David Kleindienst, Cihan Önal, Jacqueline-Claire Montanaro-Punzengruber,
    et al. “GABAB Receptor Auxiliary Subunits Modulate Cav2.3-Mediated Release from
    Medial Habenula Terminals.” <i>ELife</i>. eLife Sciences Publications, 2021. <a
    href="https://doi.org/10.7554/ELIFE.68274">https://doi.org/10.7554/ELIFE.68274</a>.
  ieee: P. Bhandari <i>et al.</i>, “GABAB receptor auxiliary subunits modulate Cav2.3-mediated
    release from medial habenula terminals,” <i>eLife</i>, vol. 10. eLife Sciences
    Publications, 2021.
  ista: Bhandari P, Vandael DH, Fernández-Fernández D, Fritzius T, Kleindienst D,
    Önal C, Montanaro-Punzengruber J-C, Gassmann M, Jonas PM, Kulik A, Bettler B,
    Shigemoto R, Koppensteiner P. 2021. GABAB receptor auxiliary subunits modulate
    Cav2.3-mediated release from medial habenula terminals. eLife. 10, e68274.
  mla: Bhandari, Pradeep, et al. “GABAB Receptor Auxiliary Subunits Modulate Cav2.3-Mediated
    Release from Medial Habenula Terminals.” <i>ELife</i>, vol. 10, e68274, eLife
    Sciences Publications, 2021, doi:<a href="https://doi.org/10.7554/ELIFE.68274">10.7554/ELIFE.68274</a>.
  short: P. Bhandari, D.H. Vandael, D. Fernández-Fernández, T. Fritzius, D. Kleindienst,
    C. Önal, J.-C. Montanaro-Punzengruber, M. Gassmann, P.M. Jonas, A. Kulik, B. Bettler,
    R. Shigemoto, P. Koppensteiner, ELife 10 (2021).
date_created: 2021-05-30T22:01:23Z
date_published: 2021-04-29T00:00:00Z
date_updated: 2026-05-03T22:30:42Z
day: '29'
ddc:
- '570'
department:
- _id: RySh
- _id: PeJo
doi: 10.7554/ELIFE.68274
ec_funded: 1
external_id:
  isi:
  - '000651761700001'
  pmid:
  - '33913808'
file:
- access_level: open_access
  checksum: 6ebcb79999f889766f7cd79ee134ad28
  content_type: application/pdf
  creator: cziletti
  date_created: 2021-05-31T09:43:09Z
  date_updated: 2021-05-31T09:43:09Z
  file_id: '9440'
  file_name: 2021_eLife_Bhandari.pdf
  file_size: 8174719
  relation: main_file
  success: 1
file_date_updated: 2021-05-31T09:43:09Z
has_accepted_license: '1'
intvolume: '        10'
isi: 1
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 25B7EB9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '692692'
  name: Biophysics and circuit function of a giant cortical glutamatergic synapse
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: eLife
publication_identifier:
  eissn:
  - 2050-084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
related_material:
  link:
  - relation: earlier_version
    url: https://doi.org/10.1101/2020.04.16.045112
  record:
  - id: '19271'
    relation: dissertation_contains
    status: public
  - id: '9562'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: GABAB receptor auxiliary subunits modulate Cav2.3-mediated release from medial
  habenula terminals
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: 10
year: '2021'
...
---
_id: '9756'
abstract:
- lang: eng
  text: High-resolution visualization and quantification of membrane proteins contribute
    to the understanding of their functions and the roles they play in physiological
    and pathological conditions. Sodium dodecyl sulfate-digested freeze-fracture replica
    labeling (SDS-FRL) is a powerful electron microscopy method to study quantitatively
    the two-dimensional distribution of transmembrane proteins and their tightly associated
    proteins. During treatment with SDS, intracellular organelles and proteins not
    anchored to the replica are dissolved, whereas integral membrane proteins captured
    and stabilized by carbon/platinum deposition remain on the replica. Their intra-
    and extracellular domains become exposed on the surface of the replica, facilitating
    the accessibility of antibodies and, therefore, providing higher labeling efficiency
    than those obtained with other immunoelectron microscopy techniques. In this chapter,
    we describe the protocols of SDS-FRL adapted for mammalian brain samples, and
    optimization of the SDS treatment to increase the labeling efficiency for quantification
    of Cav2.1, the alpha subunit of P/Q-type voltage-dependent calcium channels utilizing
    deep learning algorithms.
acknowledgement: This work was supported by the European Union (European Research
  Council Advanced grant no. 694539 and Human Brain Project Ref. 720270 to R. S.)
  and the Austrian Academy of Sciences (DOC fellowship to D.K.).
alternative_title:
- Neuromethods
article_processing_charge: No
author:
- first_name: Walter
  full_name: Kaufmann, Walter
  id: 3F99E422-F248-11E8-B48F-1D18A9856A87
  last_name: Kaufmann
  orcid: 0000-0001-9735-5315
- first_name: David
  full_name: Kleindienst, David
  id: 42E121A4-F248-11E8-B48F-1D18A9856A87
  last_name: Kleindienst
- first_name: Harumi
  full_name: Harada, Harumi
  id: 2E55CDF2-F248-11E8-B48F-1D18A9856A87
  last_name: Harada
  orcid: 0000-0001-7429-7896
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: 'Kaufmann W, Kleindienst D, Harada H, Shigemoto R. High-Resolution localization
    and quantitation of membrane proteins by SDS-digested freeze-fracture replica
    labeling (SDS-FRL). In: <i> Receptor and Ion Channel Detection in the Brain</i>.
    Vol 169. Neuromethods. New York: Humana; 2021:267-283. doi:<a href="https://doi.org/10.1007/978-1-0716-1522-5_19">10.1007/978-1-0716-1522-5_19</a>'
  apa: 'Kaufmann, W., Kleindienst, D., Harada, H., &#38; Shigemoto, R. (2021). High-Resolution
    localization and quantitation of membrane proteins by SDS-digested freeze-fracture
    replica labeling (SDS-FRL). In <i> Receptor and Ion Channel Detection in the Brain</i>
    (Vol. 169, pp. 267–283). New York: Humana. <a href="https://doi.org/10.1007/978-1-0716-1522-5_19">https://doi.org/10.1007/978-1-0716-1522-5_19</a>'
  chicago: 'Kaufmann, Walter, David Kleindienst, Harumi Harada, and Ryuichi Shigemoto.
    “High-Resolution Localization and Quantitation of Membrane Proteins by SDS-Digested
    Freeze-Fracture Replica Labeling (SDS-FRL).” In <i> Receptor and Ion Channel Detection
    in the Brain</i>, 169:267–83. Neuromethods. New York: Humana, 2021. <a href="https://doi.org/10.1007/978-1-0716-1522-5_19">https://doi.org/10.1007/978-1-0716-1522-5_19</a>.'
  ieee: 'W. Kaufmann, D. Kleindienst, H. Harada, and R. Shigemoto, “High-Resolution
    localization and quantitation of membrane proteins by SDS-digested freeze-fracture
    replica labeling (SDS-FRL),” in <i> Receptor and Ion Channel Detection in the
    Brain</i>, vol. 169, New York: Humana, 2021, pp. 267–283.'
  ista: 'Kaufmann W, Kleindienst D, Harada H, Shigemoto R. 2021.High-Resolution localization
    and quantitation of membrane proteins by SDS-digested freeze-fracture replica
    labeling (SDS-FRL). In:  Receptor and Ion Channel Detection in the Brain. Neuromethods,
    vol. 169, 267–283.'
  mla: Kaufmann, Walter, et al. “High-Resolution Localization and Quantitation of
    Membrane Proteins by SDS-Digested Freeze-Fracture Replica Labeling (SDS-FRL).”
    <i> Receptor and Ion Channel Detection in the Brain</i>, vol. 169, Humana, 2021,
    pp. 267–83, doi:<a href="https://doi.org/10.1007/978-1-0716-1522-5_19">10.1007/978-1-0716-1522-5_19</a>.
  short: W. Kaufmann, D. Kleindienst, H. Harada, R. Shigemoto, in:,  Receptor and
    Ion Channel Detection in the Brain, Humana, New York, 2021, pp. 267–283.
corr_author: '1'
date_created: 2021-07-30T09:34:56Z
date_published: 2021-07-27T00:00:00Z
date_updated: 2026-05-03T22:30:42Z
day: '27'
ddc:
- '573'
department:
- _id: RySh
- _id: EM-Fac
doi: 10.1007/978-1-0716-1522-5_19
ec_funded: 1
has_accepted_license: '1'
intvolume: '       169'
keyword:
- 'Freeze-fracture replica: Deep learning'
- Immunogold labeling
- Integral membrane protein
- Electron microscopy
language:
- iso: eng
month: '07'
oa_version: None
page: 267-283
place: New York
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 25CBA828-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '720270'
  name: Human Brain Project Specific Grant Agreement 1
publication: ' Receptor and Ion Channel Detection in the Brain'
publication_identifier:
  eisbn:
  - '9781071615225'
  isbn:
  - '9781071615218'
publication_status: published
publisher: Humana
quality_controlled: '1'
related_material:
  record:
  - id: '9562'
    relation: dissertation_contains
    status: public
scopus_import: '1'
series_title: Neuromethods
status: public
title: High-Resolution localization and quantitation of membrane proteins by SDS-digested
  freeze-fracture replica labeling (SDS-FRL)
type: book_chapter
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 169
year: '2021'
...
---
_id: '7665'
abstract:
- lang: eng
  text: Acute brain slice preparation is a powerful experimental model for investigating
    the characteristics of synaptic function in the brain. Although brain tissue is
    usually cut at ice-cold temperature (CT) to facilitate slicing and avoid neuronal
    damage, exposure to CT causes molecular and architectural changes of synapses.
    To address these issues, we investigated ultrastructural and electrophysiological
    features of synapses in mouse acute cerebellar slices prepared at ice-cold and
    physiological temperature (PT). In the slices prepared at CT, we found significant
    spine loss and reconstruction, synaptic vesicle rearrangement and decrease in
    synaptic proteins, all of which were not detected in slices prepared at PT. Consistent
    with these structural findings, slices prepared at PT showed higher release probability.
    Furthermore, preparation at PT allows electrophysiological recording immediately
    after slicing resulting in higher detectability of long-term depression (LTD)
    after motor learning compared with that at CT. These results indicate substantial
    advantages of the slice preparation at PT for investigating synaptic functions
    in different physiological conditions.
article_number: '63'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Kohgaku
  full_name: Eguchi, Kohgaku
  id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
  last_name: Eguchi
  orcid: 0000-0002-6170-2546
- first_name: Philipp
  full_name: Velicky, Philipp
  id: 39BDC62C-F248-11E8-B48F-1D18A9856A87
  last_name: Velicky
  orcid: 0000-0002-2340-7431
- first_name: Elena
  full_name: Hollergschwandtner, Elena
  id: 3C054040-F248-11E8-B48F-1D18A9856A87
  last_name: Hollergschwandtner
- first_name: Makoto
  full_name: Itakura, Makoto
  last_name: Itakura
- first_name: Yugo
  full_name: Fukazawa, Yugo
  last_name: Fukazawa
- first_name: Johann G
  full_name: Danzl, Johann G
  id: 42EFD3B6-F248-11E8-B48F-1D18A9856A87
  last_name: Danzl
  orcid: 0000-0001-8559-3973
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: Eguchi K, Velicky P, Saeckl E, et al. Advantages of acute brain slices prepared
    at physiological temperature in the characterization of synaptic functions. <i>Frontiers
    in Cellular Neuroscience</i>. 2020;14. doi:<a href="https://doi.org/10.3389/fncel.2020.00063">10.3389/fncel.2020.00063</a>
  apa: Eguchi, K., Velicky, P., Saeckl, E., Itakura, M., Fukazawa, Y., Danzl, J. G.,
    &#38; Shigemoto, R. (2020). Advantages of acute brain slices prepared at physiological
    temperature in the characterization of synaptic functions. <i>Frontiers in Cellular
    Neuroscience</i>. Frontiers Media. <a href="https://doi.org/10.3389/fncel.2020.00063">https://doi.org/10.3389/fncel.2020.00063</a>
  chicago: Eguchi, Kohgaku, Philipp Velicky, Elena Saeckl, Makoto Itakura, Yugo Fukazawa,
    Johann G Danzl, and Ryuichi Shigemoto. “Advantages of Acute Brain Slices Prepared
    at Physiological Temperature in the Characterization of Synaptic Functions.” <i>Frontiers
    in Cellular Neuroscience</i>. Frontiers Media, 2020. <a href="https://doi.org/10.3389/fncel.2020.00063">https://doi.org/10.3389/fncel.2020.00063</a>.
  ieee: K. Eguchi <i>et al.</i>, “Advantages of acute brain slices prepared at physiological
    temperature in the characterization of synaptic functions,” <i>Frontiers in Cellular
    Neuroscience</i>, vol. 14. Frontiers Media, 2020.
  ista: Eguchi K, Velicky P, Saeckl E, Itakura M, Fukazawa Y, Danzl JG, Shigemoto
    R. 2020. Advantages of acute brain slices prepared at physiological temperature
    in the characterization of synaptic functions. Frontiers in Cellular Neuroscience.
    14, 63.
  mla: Eguchi, Kohgaku, et al. “Advantages of Acute Brain Slices Prepared at Physiological
    Temperature in the Characterization of Synaptic Functions.” <i>Frontiers in Cellular
    Neuroscience</i>, vol. 14, 63, Frontiers Media, 2020, doi:<a href="https://doi.org/10.3389/fncel.2020.00063">10.3389/fncel.2020.00063</a>.
  short: K. Eguchi, P. Velicky, E. Saeckl, M. Itakura, Y. Fukazawa, J.G. Danzl, R.
    Shigemoto, Frontiers in Cellular Neuroscience 14 (2020).
corr_author: '1'
date_created: 2020-04-19T22:00:55Z
date_published: 2020-03-19T00:00:00Z
date_updated: 2025-06-12T07:16:39Z
day: '19'
ddc:
- '570'
department:
- _id: JoDa
- _id: RySh
doi: 10.3389/fncel.2020.00063
ec_funded: 1
external_id:
  isi:
  - '000525582200001'
  pmid:
  - '32265664'
file:
- access_level: open_access
  checksum: 1c145123c6f8dc3e2e4bd5a66a1ad60e
  content_type: application/pdf
  creator: dernst
  date_created: 2020-04-20T10:59:49Z
  date_updated: 2020-07-14T12:48:01Z
  file_id: '7668'
  file_name: 2020_FrontiersCellularNeurosc_Eguchi.pdf
  file_size: 9227283
  relation: main_file
file_date_updated: 2020-07-14T12:48:01Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 2659CC84-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '793482'
  name: 'Ultrastructural analysis of phosphoinositides in nerve terminals: distribution,
    dynamics and physiological roles in synaptic transmission'
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 265CB4D0-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I03600
  name: Optical control of synaptic function via adhesion molecules
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
  name: IST Austria Open Access Fund
publication: Frontiers in Cellular Neuroscience
publication_identifier:
  issn:
  - 1662-5102
publication_status: published
publisher: Frontiers Media
quality_controlled: '1'
scopus_import: '1'
status: public
title: Advantages of acute brain slices prepared at physiological temperature in the
  characterization of synaptic functions
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: 14
year: '2020'
...
---
_id: '8532'
abstract:
- lang: eng
  text: The molecular anatomy of synapses defines their characteristics in transmission
    and plasticity. Precise measurements of the number and distribution of synaptic
    proteins are important for our understanding of synapse heterogeneity within and
    between brain regions. Freeze–fracture replica immunogold electron microscopy
    enables us to analyze them quantitatively on a two-dimensional membrane surface.
    Here, we introduce Darea software, which utilizes deep learning for analysis of
    replica images and demonstrate its usefulness for quick measurements of the pre-
    and postsynaptic areas, density and distribution of gold particles at synapses
    in a reproducible manner. We used Darea for comparing glutamate receptor and calcium
    channel distributions between hippocampal CA3-CA1 spine synapses on apical and
    basal dendrites, which differ in signaling pathways involved in synaptic plasticity.
    We found that apical synapses express a higher density of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic
    acid (AMPA) receptors and a stronger increase of AMPA receptors with synaptic
    size, while basal synapses show a larger increase in N-methyl-D-aspartate (NMDA)
    receptors with size. Interestingly, AMPA and NMDA receptors are segregated within
    postsynaptic sites and negatively correlated in density among both apical and
    basal synapses. In the presynaptic sites, Cav2.1 voltage-gated calcium channels
    show similar densities in apical and basal synapses with distributions consistent
    with an exclusion zone model of calcium channel-release site topography.
acknowledgement: "This research was funded by Austrian Academy of Sciences, DOC fellowship
  to D.K., European Research\r\nCouncil Advanced Grant 694539 and European Union Human
  Brain Project (HBP) SGA2 785907 to R.S.\r\nWe acknowledge Elena Hollergschwandtner
  for technical support."
article_number: '6737'
article_processing_charge: No
article_type: original
author:
- first_name: David
  full_name: Kleindienst, David
  id: 42E121A4-F248-11E8-B48F-1D18A9856A87
  last_name: Kleindienst
- first_name: Jacqueline-Claire
  full_name: Montanaro-Punzengruber, Jacqueline-Claire
  id: 3786AB44-F248-11E8-B48F-1D18A9856A87
  last_name: Montanaro-Punzengruber
- first_name: Pradeep
  full_name: Bhandari, Pradeep
  id: 45EDD1BC-F248-11E8-B48F-1D18A9856A87
  last_name: Bhandari
  orcid: 0000-0003-0863-4481
- first_name: Matthew J
  full_name: Case, Matthew J
  id: 44B7CA5A-F248-11E8-B48F-1D18A9856A87
  last_name: Case
- first_name: Yugo
  full_name: Fukazawa, Yugo
  last_name: Fukazawa
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
citation:
  ama: Kleindienst D, Montanaro-Punzengruber J-C, Bhandari P, Case MJ, Fukazawa Y,
    Shigemoto R. Deep learning-assisted high-throughput analysis of freeze-fracture
    replica images applied to glutamate receptors and calcium channels at hippocampal
    synapses. <i>International Journal of Molecular Sciences</i>. 2020;21(18). doi:<a
    href="https://doi.org/10.3390/ijms21186737">10.3390/ijms21186737</a>
  apa: Kleindienst, D., Montanaro-Punzengruber, J.-C., Bhandari, P., Case, M. J.,
    Fukazawa, Y., &#38; Shigemoto, R. (2020). Deep learning-assisted high-throughput
    analysis of freeze-fracture replica images applied to glutamate receptors and
    calcium channels at hippocampal synapses. <i>International Journal of Molecular
    Sciences</i>. MDPI. <a href="https://doi.org/10.3390/ijms21186737">https://doi.org/10.3390/ijms21186737</a>
  chicago: Kleindienst, David, Jacqueline-Claire Montanaro-Punzengruber, Pradeep Bhandari,
    Matthew J Case, Yugo Fukazawa, and Ryuichi Shigemoto. “Deep Learning-Assisted
    High-Throughput Analysis of Freeze-Fracture Replica Images Applied to Glutamate
    Receptors and Calcium Channels at Hippocampal Synapses.” <i>International Journal
    of Molecular Sciences</i>. MDPI, 2020. <a href="https://doi.org/10.3390/ijms21186737">https://doi.org/10.3390/ijms21186737</a>.
  ieee: D. Kleindienst, J.-C. Montanaro-Punzengruber, P. Bhandari, M. J. Case, Y.
    Fukazawa, and R. Shigemoto, “Deep learning-assisted high-throughput analysis of
    freeze-fracture replica images applied to glutamate receptors and calcium channels
    at hippocampal synapses,” <i>International Journal of Molecular Sciences</i>,
    vol. 21, no. 18. MDPI, 2020.
  ista: Kleindienst D, Montanaro-Punzengruber J-C, Bhandari P, Case MJ, Fukazawa Y,
    Shigemoto R. 2020. Deep learning-assisted high-throughput analysis of freeze-fracture
    replica images applied to glutamate receptors and calcium channels at hippocampal
    synapses. International Journal of Molecular Sciences. 21(18), 6737.
  mla: Kleindienst, David, et al. “Deep Learning-Assisted High-Throughput Analysis
    of Freeze-Fracture Replica Images Applied to Glutamate Receptors and Calcium Channels
    at Hippocampal Synapses.” <i>International Journal of Molecular Sciences</i>,
    vol. 21, no. 18, 6737, MDPI, 2020, doi:<a href="https://doi.org/10.3390/ijms21186737">10.3390/ijms21186737</a>.
  short: D. Kleindienst, J.-C. Montanaro-Punzengruber, P. Bhandari, M.J. Case, Y.
    Fukazawa, R. Shigemoto, International Journal of Molecular Sciences 21 (2020).
corr_author: '1'
date_created: 2020-09-20T22:01:35Z
date_published: 2020-09-14T00:00:00Z
date_updated: 2026-05-03T22:30:42Z
day: '14'
ddc:
- '570'
department:
- _id: RySh
doi: 10.3390/ijms21186737
ec_funded: 1
external_id:
  isi:
  - '000579945300001'
file:
- access_level: open_access
  checksum: 2e4f62f3cfe945b7391fc3070e5a289f
  content_type: application/pdf
  creator: dernst
  date_created: 2020-09-21T14:08:58Z
  date_updated: 2020-09-21T14:08:58Z
  file_id: '8551'
  file_name: 2020_JournMolecSciences_Kleindienst.pdf
  file_size: 5748456
  relation: main_file
  success: 1
file_date_updated: 2020-09-21T14:08:58Z
has_accepted_license: '1'
intvolume: '        21'
isi: 1
issue: '18'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 25D32BC0-B435-11E9-9278-68D0E5697425
  name: Mechanism of formation and maintenance of input side-dependent asymmetry in
    the hippocampus
- _id: 26436750-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '785907'
  name: Human Brain Project Specific Grant Agreement 2
publication: International Journal of Molecular Sciences
publication_identifier:
  eissn:
  - 1422-0067
  issn:
  - 1661-6596
publication_status: published
publisher: MDPI
quality_controlled: '1'
related_material:
  record:
  - id: '9562'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Deep learning-assisted high-throughput analysis of freeze-fracture replica
  images applied to glutamate receptors and calcium channels at hippocampal synapses
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: 21
year: '2020'
...
---
OA_type: free access
_id: '6659'
abstract:
- lang: eng
  text: Chemical labeling of proteins with synthetic molecular probes offers the possibility
    to probe the functions of proteins of interest in living cells. However, the methods
    for covalently labeling targeted proteins using complementary peptide tag-probe
    pairs are still limited, irrespective of the versatility of such pairs in biological
    research. Herein, we report the new CysHis tag-Ni(II) probe pair for the specific
    covalent labeling of proteins. A broad-range evaluation of the reactivity profiles
    of the probe and the CysHis peptide tag afforded a tag-probe pair with an optimized
    and high labeling selectivity and reactivity. In particular, the labeling specificity
    of this pair was notably improved compared to the previously reported one. This
    pair was successfully utilized for the fluorescence imaging of membrane proteins
    on the surfaces of living cells, demonstrating its potential utility in biological
    research.
acknowledgement: his work was supported by the Grant-in-Aid for Scientific Research
  B (JSPS KAKENHI grant no. JP17H03090 to A. O.); the Scientific Research on Innovative
  Areas “Chemistry for Multimolecular Crowding Biosystems” (JSPS KAKENHI grant no.
  JP17H06349 to A. O.); and the European Union (European Research Council Advanced
  grant no. 694539 and Human Brain Project Ref. 720270 to R. S.). A. O. acknowledges
  the financial support of the Takeda Science Foundation.
article_processing_charge: No
article_type: original
author:
- first_name: Naoki
  full_name: Zenmyo, Naoki
  last_name: Zenmyo
- first_name: Hiroki
  full_name: Tokumaru, Hiroki
  last_name: Tokumaru
- first_name: Shohei
  full_name: Uchinomiya, Shohei
  last_name: Uchinomiya
- first_name: Hirokazu
  full_name: Fuchida, Hirokazu
  last_name: Fuchida
- first_name: Shigekazu
  full_name: Tabata, Shigekazu
  id: 4427179E-F248-11E8-B48F-1D18A9856A87
  last_name: Tabata
- first_name: Itaru
  full_name: Hamachi, Itaru
  last_name: Hamachi
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
- first_name: Akio
  full_name: Ojida, Akio
  last_name: Ojida
citation:
  ama: Zenmyo N, Tokumaru H, Uchinomiya S, et al. Optimized reaction pair of the CysHis
    tag and Ni(II)-NTA probe for highly selective chemical labeling of membrane proteins.
    <i>Bulletin of the Chemical Society of Japan</i>. 2019;92(5):995-1000. doi:<a
    href="https://doi.org/10.1246/bcsj.20190034">10.1246/bcsj.20190034</a>
  apa: Zenmyo, N., Tokumaru, H., Uchinomiya, S., Fuchida, H., Tabata, S., Hamachi,
    I., … Ojida, A. (2019). Optimized reaction pair of the CysHis tag and Ni(II)-NTA
    probe for highly selective chemical labeling of membrane proteins. <i>Bulletin
    of the Chemical Society of Japan</i>. Bulletin of the Chemical Society of Japan.
    <a href="https://doi.org/10.1246/bcsj.20190034">https://doi.org/10.1246/bcsj.20190034</a>
  chicago: Zenmyo, Naoki, Hiroki Tokumaru, Shohei Uchinomiya, Hirokazu Fuchida, Shigekazu
    Tabata, Itaru Hamachi, Ryuichi Shigemoto, and Akio Ojida. “Optimized Reaction
    Pair of the CysHis Tag and Ni(II)-NTA Probe for Highly Selective Chemical Labeling
    of Membrane Proteins.” <i>Bulletin of the Chemical Society of Japan</i>. Bulletin
    of the Chemical Society of Japan, 2019. <a href="https://doi.org/10.1246/bcsj.20190034">https://doi.org/10.1246/bcsj.20190034</a>.
  ieee: N. Zenmyo <i>et al.</i>, “Optimized reaction pair of the CysHis tag and Ni(II)-NTA
    probe for highly selective chemical labeling of membrane proteins,” <i>Bulletin
    of the Chemical Society of Japan</i>, vol. 92, no. 5. Bulletin of the Chemical
    Society of Japan, pp. 995–1000, 2019.
  ista: Zenmyo N, Tokumaru H, Uchinomiya S, Fuchida H, Tabata S, Hamachi I, Shigemoto
    R, Ojida A. 2019. Optimized reaction pair of the CysHis tag and Ni(II)-NTA probe
    for highly selective chemical labeling of membrane proteins. Bulletin of the Chemical
    Society of Japan. 92(5), 995–1000.
  mla: Zenmyo, Naoki, et al. “Optimized Reaction Pair of the CysHis Tag and Ni(II)-NTA
    Probe for Highly Selective Chemical Labeling of Membrane Proteins.” <i>Bulletin
    of the Chemical Society of Japan</i>, vol. 92, no. 5, Bulletin of the Chemical
    Society of Japan, 2019, pp. 995–1000, doi:<a href="https://doi.org/10.1246/bcsj.20190034">10.1246/bcsj.20190034</a>.
  short: N. Zenmyo, H. Tokumaru, S. Uchinomiya, H. Fuchida, S. Tabata, I. Hamachi,
    R. Shigemoto, A. Ojida, Bulletin of the Chemical Society of Japan 92 (2019) 995–1000.
date_created: 2019-07-21T21:59:16Z
date_published: 2019-05-15T00:00:00Z
date_updated: 2025-09-10T10:37:21Z
day: '15'
ddc:
- '570'
department:
- _id: RySh
doi: 10.1246/bcsj.20190034
ec_funded: 1
external_id:
  isi:
  - '000468101800007'
has_accepted_license: '1'
intvolume: '        92'
isi: 1
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1246/bcsj.20190034
month: '05'
oa: 1
oa_version: Published Version
page: 995-1000
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
publication: Bulletin of the Chemical Society of Japan
publication_identifier:
  issn:
  - 0009-2673
publication_status: published
publisher: Bulletin of the Chemical Society of Japan
quality_controlled: '1'
scopus_import: '1'
status: public
title: Optimized reaction pair of the CysHis tag and Ni(II)-NTA probe for highly selective
  chemical labeling of membrane proteins
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 92
year: '2019'
...
---
_id: '7391'
abstract:
- lang: eng
  text: Electron microscopy (EM) is a technology that enables visualization of single
    proteins at a nanometer resolution. However, current protein analysis by EM mainly
    relies on immunolabeling with gold-particle-conjugated antibodies, which is compromised
    by large size of antibody, precluding precise detection of protein location in
    biological samples. Here, we develop a specific chemical labeling method for EM
    detection of proteins at single-molecular level. Rational design of α-helical
    peptide tag and probe structure provided a complementary reaction pair that enabled
    specific cysteine conjugation of the tag. The developed chemical labeling with
    gold-nanoparticle-conjugated probe showed significantly higher labeling efficiency
    and detectability of high-density clusters of tag-fused G protein-coupled receptors
    in freeze-fracture replicas compared with immunogold labeling. Furthermore, in
    ultrathin sections, the spatial resolution of the chemical labeling was significantly
    higher than that of antibody-mediated labeling. These results demonstrate substantial
    advantages of the chemical labeling approach for single protein visualization
    by EM.
article_processing_charge: No
article_type: original
author:
- first_name: Shigekazu
  full_name: Tabata, Shigekazu
  id: 4427179E-F248-11E8-B48F-1D18A9856A87
  last_name: Tabata
- first_name: Marijo
  full_name: Jevtic, Marijo
  id: 4BE3BC94-F248-11E8-B48F-1D18A9856A87
  last_name: Jevtic
- first_name: Nobutaka
  full_name: Kurashige, Nobutaka
  last_name: Kurashige
- first_name: Hirokazu
  full_name: Fuchida, Hirokazu
  last_name: Fuchida
- first_name: Munetsugu
  full_name: Kido, Munetsugu
  last_name: Kido
- first_name: Kazushi
  full_name: Tani, Kazushi
  last_name: Tani
- first_name: Naoki
  full_name: Zenmyo, Naoki
  last_name: Zenmyo
- first_name: Shohei
  full_name: Uchinomiya, Shohei
  last_name: Uchinomiya
- first_name: Harumi
  full_name: Harada, Harumi
  id: 2E55CDF2-F248-11E8-B48F-1D18A9856A87
  last_name: Harada
  orcid: 0000-0001-7429-7896
- first_name: Makoto
  full_name: Itakura, Makoto
  last_name: Itakura
- first_name: Itaru
  full_name: Hamachi, Itaru
  last_name: Hamachi
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
- first_name: Akio
  full_name: Ojida, Akio
  last_name: Ojida
citation:
  ama: Tabata S, Jevtic M, Kurashige N, et al. Electron microscopic detection of single
    membrane proteins by a specific chemical labeling. <i>iScience</i>. 2019;22(12):256-268.
    doi:<a href="https://doi.org/10.1016/j.isci.2019.11.025">10.1016/j.isci.2019.11.025</a>
  apa: Tabata, S., Jevtic, M., Kurashige, N., Fuchida, H., Kido, M., Tani, K., … Ojida,
    A. (2019). Electron microscopic detection of single membrane proteins by a specific
    chemical labeling. <i>IScience</i>. Elsevier. <a href="https://doi.org/10.1016/j.isci.2019.11.025">https://doi.org/10.1016/j.isci.2019.11.025</a>
  chicago: Tabata, Shigekazu, Marijo Jevtic, Nobutaka Kurashige, Hirokazu Fuchida,
    Munetsugu Kido, Kazushi Tani, Naoki Zenmyo, et al. “Electron Microscopic Detection
    of Single Membrane Proteins by a Specific Chemical Labeling.” <i>IScience</i>.
    Elsevier, 2019. <a href="https://doi.org/10.1016/j.isci.2019.11.025">https://doi.org/10.1016/j.isci.2019.11.025</a>.
  ieee: S. Tabata <i>et al.</i>, “Electron microscopic detection of single membrane
    proteins by a specific chemical labeling,” <i>iScience</i>, vol. 22, no. 12. Elsevier,
    pp. 256–268, 2019.
  ista: Tabata S, Jevtic M, Kurashige N, Fuchida H, Kido M, Tani K, Zenmyo N, Uchinomiya
    S, Harada H, Itakura M, Hamachi I, Shigemoto R, Ojida A. 2019. Electron microscopic
    detection of single membrane proteins by a specific chemical labeling. iScience.
    22(12), 256–268.
  mla: Tabata, Shigekazu, et al. “Electron Microscopic Detection of Single Membrane
    Proteins by a Specific Chemical Labeling.” <i>IScience</i>, vol. 22, no. 12, Elsevier,
    2019, pp. 256–68, doi:<a href="https://doi.org/10.1016/j.isci.2019.11.025">10.1016/j.isci.2019.11.025</a>.
  short: S. Tabata, M. Jevtic, N. Kurashige, H. Fuchida, M. Kido, K. Tani, N. Zenmyo,
    S. Uchinomiya, H. Harada, M. Itakura, I. Hamachi, R. Shigemoto, A. Ojida, IScience
    22 (2019) 256–268.
corr_author: '1'
date_created: 2020-01-29T15:56:56Z
date_published: 2019-12-20T00:00:00Z
date_updated: 2026-05-03T22:30:34Z
day: '20'
ddc:
- '570'
department:
- _id: RySh
doi: 10.1016/j.isci.2019.11.025
ec_funded: 1
external_id:
  isi:
  - '000504652000020'
  pmid:
  - '31786521'
file:
- access_level: open_access
  checksum: f3e90056a49f09b205b1c4f8c739ffd1
  content_type: application/pdf
  creator: dernst
  date_created: 2020-02-04T10:48:36Z
  date_updated: 2020-07-14T12:47:57Z
  file_id: '7448'
  file_name: 2019_iScience_Tabata.pdf
  file_size: 7197776
  relation: main_file
file_date_updated: 2020-07-14T12:47:57Z
has_accepted_license: '1'
intvolume: '        22'
isi: 1
issue: '12'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: 256-268
pmid: 1
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 25CBA828-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '720270'
  name: Human Brain Project Specific Grant Agreement 1
publication: iScience
publication_identifier:
  issn:
  - 2589-0042
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  record:
  - id: '11393'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Electron microscopic detection of single membrane proteins by a specific chemical
  labeling
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: 22
year: '2019'
...
