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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260509T201445Z DTSTART;VALUE=DATE-TIME:20220323T130000 DTEND;VALUE=DATE-TIME:20220323T140000 SUMMARY:BMS Seminar: In toto analysis of myocyte fusion in the zebrafish myotome reveals tissue scale processes regulating multinucleated skeleta l muscle formation\, Dr Timothy Saunders\, Division of Biomedical Scienc es\, WMS TZID:Europe/London UID:20220323-8a17841b7e6d30bd017e715f39c112be@warwick.ac.uk CREATED:20220318T122737Z DESCRIPTION:Abstract: Skeletal myogenesis is dynamic\, involving cell sha pe changes in concert with cell fusion and rearrangements. Yet\, the fin al muscle arrangement is highly robust with stereotypic pattern of stria ted fibres. Here\, we combined spatiotemporal live imaging with quantita tive analyses to dissect in toto fast-twitch myocyte fusion in zebrafish embryos. We found a strong mediolateral bias in fusion timing within ea ch somite. However\, at a cellular scale there was significant heterogen eity in cell shape at fusion and the relationship between initial positi on within the somite and fusion partner. We observed a close coordinatio n between slow muscle rearrangements and fast myocyte fusion. In mutants lacking slow fibres\, fusion is substantially noisier\, with reduced sp atiotemporal coordination. We propose a model where slow muscles ā€œguideā€ fast myocytes by funnelling them closer together and thus enhancing fus ion rate. Finally\, we show that expression of myomaker \, which encodes a key fusogen\, is permissive but not instructive in determining where and when fusion will occur. Our study establishes that cell fusion and r obust myotome formation depends on coordination between cell-specific fa ctors and interactions between different cell populations. Biography: Th ough originally trained as a theoretical physicist\, Dr Timothy Saunders \, Associate Professor\, now runs a developmental biology laboratory tha t focuses on deciphering the mechanisms by which organ shape emerges dur ing embryogenesis. His lab uses quantitative live imaging of Drosophila and zebrafish combined with theoretical modelling to unravel how biochem ical and mechanical inputs drive organ morphogenesis. MS Teams link avai lable here LOCATION:IBRB lecture theatre and via MS Teams CATEGORIES:BiomedicalSciences,DivisionalSeminars LAST-MODIFIED:20220318T122737Z ORGANIZER;CN=Jas Bains: END:VEVENT END:VCALENDAR