{"abstract":[{"lang":"eng","text":"Cell-cell  contact  formation  constitutes  the  first  step  in  the  emergence  of  multicellularity  in evolution, thereby  allowing  the  differentiation  of  specialized  cell  types.  In  metazoan development, cell-cell contact formation is thought to influence cell fate specification, and cell   fate   specification   has   been   implicated   in   cell-cell  contact formation.   However, remarkably little is yet known about whether and how the interaction and feedback between cell-cell contact formation and cell fate specification affect development. Here we identify a positive  feedback  loop  between  cell-cell  contact  duration,  morphogen  signaling  and mesendoderm  cell  fate  specification  during  zebrafish  gastrulation.  We  show  that  long lasting cell-cell contacts enhance the competence of prechordal plate (ppl) progenitor cells to  respond  to  Nodal  signaling,  required  for  proper  ppl  cell  fate  specification.  We  further show  that  Nodal  signalling  romotes  ppl  cell-cell  contact  duration,  thereby  generating  an effective  positive  feedback  loop  between  ppl  cell-cell  contact  duration  and  cell  fate specification. Finally, by using a combination of theoretical modeling and experimentation, we  show  that  this  feedback  loop  determines  whether  anterior  axial  mesendoderm  cells become  ppl  progenitors  or,  instead,  turn  into  endoderm  progenitors.  Our  findings  reveal that  the  gene  regulatory  networks  leading  to  cell  fate  diversification  within  the  developing embryo  are  controlled  by  the  interdependent  activities  of  cell-cell  signaling  and  contact formation."}],"oa":1,"oa_version":"Published Version","date_published":"2017-03-01T00:00:00Z","department":[{"_id":"CaHe"}],"file":[{"file_id":"6205","access_level":"closed","checksum":"242f88c87f2cf267bf05049fa26a687b","creator":"dernst","file_size":14497822,"date_created":"2019-04-05T08:36:52Z","date_updated":"2020-07-14T12:48:16Z","content_type":"application/vnd.openxmlformats-officedocument.wordprocessingml.document","file_name":"2017_Barone_thesis_final.docx","relation":"source_file"},{"date_updated":"2020-07-14T12:48:16Z","date_created":"2019-04-05T08:36:52Z","file_size":14995941,"creator":"dernst","checksum":"ba5b0613ed8bade73a409acdd880fb8a","relation":"main_file","file_name":"2017_Barone_thesis_.pdf","content_type":"application/pdf","file_id":"6206","access_level":"open_access"}],"publisher":"Institute of Science and Technology Austria","publist_id":"6444","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"supervisor":[{"id":"39427864-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-0912-4566","last_name":"Heisenberg","first_name":"Carl-Philipp J","full_name":"Heisenberg, Carl-Philipp J"}],"type":"dissertation","page":"109","day":"01","title":"Cell adhesion and cell fate: An effective feedback loop during zebrafish gastrulation","article_processing_charge":"No","publication_identifier":{"issn":["2663-337X"]},"pubrep_id":"825","file_date_updated":"2020-07-14T12:48:16Z","degree_awarded":"PhD","language":[{"iso":"eng"}],"date_created":"2018-12-11T11:49:25Z","status":"public","acknowledgement":"Many people accompanied me during this trip: I would not have reached my destination nor \r\nenjoyed the travelling without them. First of all, thanks to CP. Thanks for making me part of \r\nyour team, always full of diverse, interesting and incredibly competent people and thanks for \r\nall  the  good  science  I  witnessed  and  participated  in.  It  has  been  a \r\nblast,  an  incredibly \r\nexciting  one!  Thanks  to  JLo,  for  teaching  me  how  to  master  my  pipettes  and  showing  me \r\nthat science is a lot of fun. Many, many thanks to Gabby for teaching me basically everything \r\nabout  zebrafish  and  being  always  there  to  advice,  sugge\r\nst,  support...and  play  fussball! \r\nThank you to Julien, for the critical eye on things, Pedro, for all the invaluable feedback and \r\nthe amazing kicker matches, and Keisuke, for showing me the light, and to the three of them \r\ntogether  for  all  the  good  laughs  we\r\nhad.  My  start  in  Vienna  would  have  been  a  lot  more \r\ndifficult  without  you  guys.  Also  it  would  not  have  been  possible  without  Elena  and  Inês: \r\nthanks  for  helping  setting  up  this  lab  and  for  the  dinners  in  Gugging.  Thanks  to  Martin,  for \r\nhelping  me  understand \r\nthe  physics  behind  biology.  Thanks  to  Philipp,  for  the  interest  and \r\nadvice, and to Michael, for the Viennise take on things. Thanks to Julia, for putting up with \r\nbeing our technician and becoming a friend in the process. And now to the newest members \r\nof th\r\ne lab. Thanks to Daniel for the enthusiasm and the neverending energy and for all your \r\nhelp over the years: thank you! To Jana, for showing me that one doesn’t give up, no matter \r\nwhat.  To  Shayan,  for  being  such  a  motivated  student.  To  Matt,  for  helping  out\r\nwith  coding \r\nand for finding punk solutions to data analysis problems. Thanks to all the members of the \r\nlab, Verena, Hitoshi, Silvia, Conny, Karla, Nicoletta, Zoltan, Peng, Benoit, Roland, Yuuta and \r\nFeyza,  for  the  wonderful  atmosphere  in  the  lab.  Many  than\r\nks  to  Koni  and  Deborah:  doing \r\nexperiments would have been much more difficult without your help. Special thanks to Katjia \r\nfor  setting  up  an  amazing  imaging  facility  and  for  building  the  best  team,  Robert,  Nasser, \r\nAnna and Doreen: thank you for putting up w\r\nith all the late sortings and for helping with all \r\nthe technical problems. Thanks to Eva, Verena and Matthias for keeping the fish happy. Big \r\nthanks to Harald Janovjak for being a present and helpful committee member over the years \r\nand  to  Patrick  Lemaire  f\r\nor  the  helpful  insight  and  extremely  interesting  discussion  we  had \r\nabout  the  project.  Also,  this  journey  would  not  have  been  the  same  without  all  the  friends \r\nthat I met in Dresden and then in Vienna: Daniele, Claire, Kuba, Steffi, Harold, Dejan, Irene, \r\nFab\r\nienne, Hande, Tiago, Marianne, Jon, Srdjan, Branca, Uli, Murat, Alex, Conny, Christoph, \r\nCaro, Simone, Barbara, Felipe, Dama, Jose, Hubert and many others that filled my days with \r\nfun and support. A special thank to my family, always close even if they are \r\nkilometers away. \r\nGrazie  ai  miei  fratelli,  Nunzio  e  William,  e  alla  mia  mamma,  per  essermi  sempre  vicini  pur \r\nvivendo a chilometri di distanza. And, last but not least, thanks to Moritz, for putting up with \r\nthe crazy life of a scientist, the living apart for\r\nso long, never knowing when things are going \r\nto happen. Thanks for being a great partner and my number one fan!","related_material":{"record":[{"id":"1100","relation":"part_of_dissertation","status":"public"},{"status":"public","relation":"part_of_dissertation","id":"1537"},{"id":"1912","status":"public","relation":"part_of_dissertation"},{"relation":"part_of_dissertation","status":"public","id":"2926"},{"id":"3246","status":"public","relation":"part_of_dissertation"},{"relation":"part_of_dissertation","status":"public","id":"676"},{"id":"735","relation":"part_of_dissertation","status":"public"}]},"ddc":["570","590"],"citation":{"apa":"Barone, V. (2017). <i>Cell adhesion and cell fate: An effective feedback loop during zebrafish gastrulation</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/AT:ISTA:th_825\">https://doi.org/10.15479/AT:ISTA:th_825</a>","chicago":"Barone, Vanessa. “Cell Adhesion and Cell Fate: An Effective Feedback Loop during Zebrafish Gastrulation.” Institute of Science and Technology Austria, 2017. <a href=\"https://doi.org/10.15479/AT:ISTA:th_825\">https://doi.org/10.15479/AT:ISTA:th_825</a>.","ama":"Barone V. Cell adhesion and cell fate: An effective feedback loop during zebrafish gastrulation. 2017. doi:<a href=\"https://doi.org/10.15479/AT:ISTA:th_825\">10.15479/AT:ISTA:th_825</a>","ieee":"V. Barone, “Cell adhesion and cell fate: An effective feedback loop during zebrafish gastrulation,” Institute of Science and Technology Austria, 2017.","short":"V. Barone, Cell Adhesion and Cell Fate: An Effective Feedback Loop during Zebrafish Gastrulation, Institute of Science and Technology Austria, 2017.","ista":"Barone V. 2017. Cell adhesion and cell fate: An effective feedback loop during zebrafish gastrulation. Institute of Science and Technology Austria.","mla":"Barone, Vanessa. <i>Cell Adhesion and Cell Fate: An Effective Feedback Loop during Zebrafish Gastrulation</i>. Institute of Science and Technology Austria, 2017, doi:<a href=\"https://doi.org/10.15479/AT:ISTA:th_825\">10.15479/AT:ISTA:th_825</a>."},"month":"03","license":"https://creativecommons.org/licenses/by/4.0/","publication_status":"published","doi":"10.15479/AT:ISTA:th_825","alternative_title":["ISTA Thesis"],"_id":"961","year":"2017","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","author":[{"orcid":"0000-0003-2676-3367","id":"419EECCC-F248-11E8-B48F-1D18A9856A87","last_name":"Barone","first_name":"Vanessa","full_name":"Barone, Vanessa"}],"date_updated":"2023-09-27T14:16:45Z","has_accepted_license":"1"}