Reposted by Claire DessallesOriol Mañé Benach @oriolmb.bsky.social · 24/09/2026Very excited to finally share NeMo! 🌀🐟 Such a cool tool for anyone working with curved surfaces, and especially curved nematics. Really happy to have been part of this project and great team! arxiv.org/abs/2609.12906 0197
Reposted by Claire DessallesBenoit Ladoux @bladoux.bsky.social · 23/09/2026What determines how epithelial cells divide when shape cues disappear? Our new work in @natcomms.nature.com shows that divisions follow maximal stress anisotropy — a “principal-stress rule” beyond Hertwig’s long-axis rule. Fantastic work led by @luanger.bsky.social www.nature.com/articles/s41... 24918
Claire Dessalles @clairedessalles.bsky.social · 23/09/2026NeMo is finally out! 🐟 We present our new method to peel cellular layers and extract their nematics. If you're wondering what a fish has to do with curved nematics, check out the thread and the publication 👀👇🏼 arxiv.org/html/2609.12... 25224
Reposted by Claire Dessallesepithelial mechanics fan club @epimechfc.bsky.social · 09/09/2026Rembert, N., Dedenon, M., Roux, A., & Dessalles, C. A. (2026). Nematic order in cellular tissues: a standardized framework and anomalous defect dynamics. Biophysics. #EpithelialMechanics www.biorxiv.org/content/10.6... 0166
Reposted by Claire DessallesJulia Eckert @juliaeckert.bsky.social · 12/09/2026From cell signaling to collective tissue dynamics, our community is sharing incredible research! 🔬 Thanks to everyone! Want to become an @epimechfc.bsky.social delegate and share your passion for science with us? Reach out and let us host your next thread.🧵 👉 epithelialmechanics.github.io/threads/ 01211
Reposted by Claire DessallesbioRxiv Biophysics @biorxiv-biophys.bsky.social · 29/08/2026Curvature-guided chiral collective organization of myoblast tissues www.biorxiv.org/content/10.64898/20… 054
Reposted by Claire DessallesKate Cavanaugh @katecavanaugh.bsky.social · 25/08/2026🧵 What if one reason fertility declines with age isn’t just genetic-but mechanical? Thrilled to share our new paper in @NatureCellBio : Elevated contractility drives implantation failure in mouse embryos from aged females… here’s what we found 👇 www.nature.com/articles/s41... 1/11nature.comElevated contractility drives implantation failure in mouse embryos from aged females - Nature Cell BiologyCavanaugh et al. show that embryos from aged mice have increased contractility and tissue viscosity on embryonic day 4.5, which leads to poor spreading and attachment. Similar age-associated mechanica... 1214646
Reposted by Claire DessallesKate Cavanaugh @katecavanaugh.bsky.social · 25/08/2026And finally—a bit of personal news: 🔬 I’m on the faculty job market this year! I’m looking for tenure-track opportunities where I can build a lab at the intersection of developmental biology, mechanobiology, reproductive biology & aging. 46635
Reposted by Claire DessallesJoshua Tran @joshuatran.bsky.social · 27/07/2026💡New Preprint! How does a cell control which way a membrane bends? ESCRT-III has the remarkable ability to reshape membranes and drive reverse-topology fission, yet a fundamental question has remained: what determines the direction of membrane remodeling? www.biorxiv.org/content/10.6...biorxiv.orgDirection of ESCRT-III-dependent membrane bending emerges from bilayer asymmetryIn cells, ESCRT-III is unique in mediating fission of membrane necks from inside, a process called reverse-topology fission. Yet, in vitro, the complex primarily assembles outside membrane necks and m... 13115
Reposted by Claire DessallesRoux Lab, Geneva @rouxlab.bsky.social · 12/05/2026@mhakala.bsky.social shows that HRS forms bidimensional condensates onto endosomal membranes to flatten clathrin/ESCRT-0, an observation unexplained since the 2000s. Thx to Kukulski lab, @stefvass.bsky.social @colomlab.bsky.social @kaksonen.bsky.social @mishakudryashev.bsky.social rdcu.be/fihKk 13016
Claire Dessalles @clairedessalles.bsky.social · 29/04/2026Plenty of opportunities for talks, especially for early career! Don't hesitate to send an abstract! 064
Reposted by Claire DessallesRaphaël Clément @raphclement.bsky.social · 29/04/2026The division Physics and Life of the French Physical Society (SFP) organizes its fourth annual meeting in Lyon, July 9th & 10th! Join us and register here: phys-life-2026.sciencesconf.org Abstract submission deadline: May 30th 0118
Reposted by Claire DessallesOriol Mañé Benach @oriolmb.bsky.social · 24/04/2026Very nice work from colleagues on the nematic organization of cellular tissues👇 Great to see such a clear focus on how parameter choices influence the analysis and the conclusions we draw, together with a detailed look at defect behavior across cell types! 052
Reposted by Claire DessallesClaire Dessalles @clairedessalles.bsky.social · 22/04/2026All you ever wanted to know about how to analyse the nematic nature of cellular tissues is right here 👀👇🏼! Bonus #1: we did it for many cell types and uncovered unexpected defect behavior 🐌 Bonus #2: for theoreticians looking for parameter values for your simulation🧑🏼💻 tinyurl.com/2s399yen 44418
Claire Dessalles @clairedessalles.bsky.social · 22/04/2026All you ever wanted to know about how to analyse the nematic nature of cellular tissues is right here 👀👇🏼! Bonus #1: we did it for many cell types and uncovered unexpected defect behavior 🐌 Bonus #2: for theoreticians looking for parameter values for your simulation🧑🏼💻 tinyurl.com/2s399yen 44418
Reposted by Claire DessallesAlfredo Sciortino @asciortino.bsky.social · 02/04/2026New preprint out: arxiv.org/pdf/2604.01057 Together with JF Joanny and Sudipta, we introduce a "new" kind of active phase separation inspired by experiments with motors and microtubules and based on transport of species along a polar "pump"! @manuelthery.bsky.social @lblanchoin.bsky.socialarxiv.org 2183
Reposted by Claire DessallesZachary Gao Sun @thezgs.bsky.social · 25/02/2026So proud of my amazing previous colleague at Yale, Sheng Chen and all the colleagues for this paper on topological control of spontaneous failure in active nematic solids! It's on @natmater.nature.com . www.nature.com/articles/s41...nature.comTopological control of spontaneous failure in active nematic solids - Nature MaterialsTopological defect quadrupoles orchestrate predictable failure patterns in active nematic solid networks. 183
Reposted by Claire DessallesGdR ImaBio 🔬 @gdrimabio.bsky.social · 12/03/2026The @gdraqv.bsky.social "Approches Quantitatives du Vivant" is organizing its annual conference, "AQV Days 2026". 🗓️ From the 11th to 13th May 📍 At the @cnrs.fr centre of Aussois (Savoie) 👉 registration, and other practical information : 🔗 aqv-days-2026.sciencesconf.org/%60 #AQVDays2026 144
Reposted by Claire DessallesSiegenthaler Lab @siegenthalerlab.bsky.social · 26/02/2026Saw a few papers recently in CNS injury using transgenic lines to target 'pericytes' in the CNS & broad markers that are not specific, also label fibroblasts - imprecise tools & language = assigning functions in fibrosis to pericytes when other cells like fibroblasts are primarily involved 1/4media.tenor.coma drawing of a stick figure next to a soap boxALT: a drawing of a stick figure next to a soap box 3228
Reposted by Claire Dessallesepithelial mechanics fan club @epimechfc.bsky.social · 06/02/2026Espadas, J., Souza, D. P., Hakala, M., García-Arcos, J. M., Tran, J., Kumar, A., Marcuello, C., Merino, A., ..., Toret, C. P., & Roux, A. (2025). Molecular basis for cellular compartmentalization by an ancient membrane fission mechanism. bioRxiv. #EpithelialMechanics buff.ly/OQv9qMw 087
Claire Dessalles @clairedessalles.bsky.social · 20/01/2026Glad to see this project out! Huge effort of all and in particular Guillaume for the 3D segmentation of cells. 👏 If you are interested in how cells pack themselves in 3D, please check it out 👀 👇 183
Reposted by Claire DessallesTurlier lab @turlierlab.bsky.social · 20/01/2026How does a ball of cells become an embryo? Genes matter—but physics (forces, geometry, topology) drives self-organization. Hervé Turlier's research vision on the physics of embryogenesis👇 shorturl.at/761x9 #Embryogenesis #Biophysics #Morphogenesis @college-de-france.fr @cnrsbiologie.bsky.social 041
Reposted by Claire DessallesbioRxiv Biophysics @biorxiv-biophys.bsky.social · 15/01/2026Analysis of 3D epithelial tissue packing reveals correlated patterns of cell height and skewing www.biorxiv.org/content/10.64898/20… 033
Reposted by Claire Dessallesepithelial mechanics fan club @epimechfc.bsky.social · 14/12/2025Cells can sense the geometry of their environment, from tiny subcellular features to whole-tissue patterns. How can we engineer environments to systematically probe these responses? 🧵 I'm @lhinderling.bsky.social from @olivierpertz.bsky.social lab, let’s do a short tour on microfabrication! 17330
Reposted by Claire DessallesJulia Sero @cellmorphosero.bsky.social · 04/12/2025If you or your trainees are just getting started with image analysis of cells & are #CellProfiler -curious, here is a fairly thorough walk-through demo I did recently. Loading files, extracting metadata (fun with Regex!), identifying objects, measuring, filtering, QC, exporting: youtu.be/fO5nJdhj_7Iyoutu.beIntroduction to CellProfiler - by a biologist, for biologists!YouTube video by CellMorphoJSero 48433
Reposted by Claire DessallesDan 🐟 C @zebrafish007.bsky.social · 02/12/2025Exciting new #Zebrafish research from the #WeinsteinLab, led by Jong Park! “Specialized gas-exchange endothelium of the zebrafish gill” — www.biorxiv.org/content/10.6... Amazing to see red blood cells moving through the gills! Don’t forget to check out the supplemental movies ;-) 342198324
Reposted by Claire DessallesRicard Alert Zenón @ricardalert.bsky.social · 02/12/2025New preprint! Do you like ocean waves? We found similar waves on bacterial colonies! We found that this collective behavior, known as rippling, is nothing but surface waves on an active nematic. @princeton.edu @mpipks.bsky.social @ub.edu @icreacommunity.bsky.social www.biorxiv.org/content/10.1... 214044
Reposted by Claire DessallesRicard Alert Zenón @ricardalert.bsky.social · 02/12/2025Super excited to start as an ICREA Research Professor at the University of Barcelona! Really happy to join fantastic colleagues at @icreacommunity.bsky.social and @ub.edu. www.icrea.cat/community/ic...icrea.catICREAs Fitxa - ICREASomething went wrong 5361
Claire Dessalles @clairedessalles.bsky.social · 02/12/2025📢Internships on cellular nematics! 🔬Come for the pretty images, stay for the cool physics: each project combines in vitro experiments with advanced microscopy and image analysis. 📧Feel free to DM or email me with any questions. 11415
Reposted by Claire DessallesJuanma García-Arcos @juanmagararc.bsky.social · 27/11/2025New paper from the @rouxlab.bsky.social on Nature Communications! We study how membrane tension is spatially organized in cells. Using the mechanosensitive probe Flipper-TR to visualize tension across the plasma membrane of adherent cells and to dissect the conditions needed for a gradient to happen 68332
Reposted by Claire DessallesBenoit Ladoux @bladoux.bsky.social · 02/12/2025Tissue stress measurements — our latest preprint is out: arxiv.org/abs/2512.00550 (publication coming soon!) Fantastic work by the three musketeers — @luanger.bsky.social, @andreasschoenit.bsky.social and @fanny-wodrascka.bsky.social — in collaboration with P. Marcq!arxiv.orgTissue stress measurements with Bayesian Inversion Stress MicroscopyCells within biological tissue are constantly subjected to dynamic mechanical forces. Measuring the internal stress of tissues has proven crucial for our understanding of the role of mechanical forces... 02310
Reposted by Claire DessallesJavier Espadas @javierespadas.bsky.social · 01/12/2025New preprint from the lab!!🎉 We show that Asgard archaea ESCRT-III proteins can trigger membrane fission and reveal its molecular mechanism, offering clues to how these cells may have built internal compartments. But do these organisms even have these compartments? www.biorxiv.org/content/10.1...biorxiv.orgMolecular basis for cellular compartmentalization by an ancient membrane fission mechanismThe emergence of cell compartmentalization depends on membrane fission to create the endomembrane compartments. In eukaryotes, membrane fission is commonly executed by ESCRT-III, a protein complex con... 18432
Reposted by Claire DessallesCécile Michaut @cecilemichaut.bsky.social · 01/12/2025Vous faites des études de physique mais vous ne savez pas quel métier faire ? J'ai rédigé pour la Société française de physique @sfp-physique.bsky.social une description de nombreux métiers accessibles, à travers les témoignages de celles et ceux qui les exercent. www.metiersdelaphysique.frmetiersdelaphysique.frMétiers de la physique 03521
Reposted by Claire Dessallesepithelial mechanics fan club @epimechfc.bsky.social · 15/11/2025Hi, I’m David Brückner @davidbrueckner.bsky.social. I’ll take you through how cells in a tissue can use information distributed by biochemical gradients to make decisions, and how we can measure such positional information. buff.ly/RFxVeHh 15916
Reposted by Claire DessallesPau Guillamat @pauguillamat.bsky.social · 12/11/2025Microfluidic pumping with active nematics! Self-organized and self-sustained. No external pumps. @pnas.org @ub.edu www.pnas.org/doi/10.1073/... #ActiveMatter #Microfluidics #SoftMatterpnas.orgActive nematic pumps | PNASMicrofluidics involves the manipulation of flows at the microscale, typically requiring external power sources to generate pressure gradients. Alte... 23413
Reposted by Claire DessallesJuanma García-Arcos @juanmagararc.bsky.social · 11/11/2025Launching celldynamicslab.com, the homepage of our new group at EPFL working on cell fragmentation, membrane and cortex mechanics, FLIM imaging, and microfluidics tools. MSc/PhD or postdocs interested in quantitative cell biology are welcome to reach out. We're also hiring a lab manager in 2026!celldynamicslab.comMain - Cell Dynamics and Fragmentation LabThe Cell Dynamics and Fragmentation lab at We study how single cells move and fragment in complex environments using microfluidics. We bring tools and concep... 147535
Reposted by Claire DessallesHao Yin @haoyin.bsky.social · 28/10/2025Amazing story 😍 Just scan through it. Sophisticate, delicate and elegant 💥 Will read it in details again when time allows😋 2121
Reposted by Claire DessallesCampàs Lab @campaslab.bsky.social · 28/10/2025Really excited to present the results of a fantastic collaboration with Jesse Veenvliet @jesseveenvliet.bsky.social @mpi-cbg.de @poldresden.bsky.social 🤩 We find a unique mechanism for body axis elongation in mammals, different from other vertebrate species ➡️ www.biorxiv.org/content/10.1... 614347
Reposted by Claire Dessallesepithelial mechanics fan club @epimechfc.bsky.social · 24/10/2025Borges, A., Miranda-Rodriguez, J. R., Ceccarelli, A., Ventura, G., Sedzinski, J., Lopez-Schier, H., & Chara, O. (2025). ForSys: non-invasive stress inference from time-lapse microscopy. iScience, 28, 113685. #EpithelialMechanics buff.ly/jQ96TCK 074
Reposted by Claire DessallesGautam Dey @gautamdey.bsky.social · 04/10/2025If you’re applying to your dream lab for an internship/PhD/postdoc, always send a second email 1-2 weeks after the first one if you don’t hear back. I promise we will be grateful rather than annoyed. My email inbox is a disaster and I’m quite junior - and very few of us have secretarial support 216548
Reposted by Claire DessallesMiki Ebisuya @ebisuyamiki.bsky.social · 08/10/2025New preprint from the lab! We discovered a transient fluidization in the basal region of human forebrains by tracking microdroplets in cerebral organoids.This “basal fluidization”, absent in gorilla and mouse, may contribute to greater surface expansion in human forebrains 1/ doi.org/10.1101/2025... 39336
Reposted by Claire DessallesJoachim Goedhart @joachimgoedhart.bsky.social · 26/09/2025Fluorescence lifetime estimation: a practical approach using Flipper-TR FLIM by Juan Manuel Garcia-Arcos and team: www.biorxiv.org/content/10.1... 0165
Reposted by Claire DessallesSpirochrome @spirochrome.com · 07/10/2025An incredibly comprehensive and meticulous study of Flipper-TR lifetime analysis to make your membrane tension measurements using Flipper-TR more robust and reliable. Thanks to @juanmagararc.bsky.social and @rouxlab.bsky.social for this very valuable resource! 063
Claire Dessalles @clairedessalles.bsky.social · 07/10/2025All you've ever wanted to know about FLIM analysis (and its application in Flipper-TR)!😱🤩🔬 042
Reposted by Claire DessallesDevelopment @dev-journal.bsky.social · 02/10/2025Modifying mechanical constraint guides gastruloid patterning This Research Highlight showcases the work from Judith Pineau @judithpineau.bsky.social, Jerome Wong-Ng @jeromewongng.bsky.social, Thomas Gregor @thomasgregor.bsky.social and colleagues: journals.biologists.com/dev/article/... 1133
Reposted by Claire DessallesJudith Pineau @judithpineau.bsky.social · 03/10/2025In this beautiful system, we could show uncoupling of gene expression profiles, morphology and patterning… #NotInTheGenes 😉 (also includes a method to do long term 🔬 of elongating gastruloids) Thank you to all involved @jeromewongng.bsky.social @thomasgregor.bsky.social @alexandremayran.bsky.social 0135
Reposted by Claire DessallesChristophe 🔬 Leterrier @christlet.bsky.social · 26/09/2025#FluorescenceFriday: getting ready for #GEF25, playing with Ciarán's stunning ExM data 611921
Reposted by Claire DessallesDr Elodie Chabrol @eloscicomm.bsky.social · 23/09/2025👩🔬J'ai commencé un kit de démarrage "chercheuses en France" go.bsky.app/TBEzKC #FemmesEnScience J'ai besoin de votre aide pour le remplir et donner de la visibilité aux chercheuses que vous connaissez et qui sont sur Bluesky ! ▶️Taguez celles que vous connaissez, je les ajoute ! 74348232
Claire Dessalles @clairedessalles.bsky.social · 15/09/2025Super clear thread for super cool science! 140