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a. villars

@avillars.bsky.social
191 followers 437 following 7 posts

Currently Postdoc in Dagmar Iber lab 🐁, formerly working on cell extrusion as a phD student in Romain Levayer lab 🪰 Interested cell decision making and mechanics during development

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Levayer Lab @levayerr.bsky.social · 23/09/2026
Not every cell react the same way to caspase activation. In our recent study (led by @tomcumming.bsky.social and initiated by @avillars.bsky.social ), we tried to better understand what explains this difference and outlined a role of past caspase exposure 👇 www.nature.com/articles/s41...
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Dagmar Iber & CoBi @iberd.bsky.social · 13/08/2026
🎉 Our paper is out in Cell Systems @cp-cellsystems.bsky.social ! How does an embryo build an energy-efficient fractal lung before the first breath? 📄 doi.org/10.1016/j.ce... 🧵 bsky.app/profile/iberd.bsky.social/post/3lfrdth6k4c22 @maltemederacke.bsky.social @kevinyamauchi.bsky.social
doi.org
Redirecting
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Turlier lab @turlierlab.bsky.social · 24/07/2026
Very happy to have this work finally published! How do embryos sculpt their shape? We map the contractile & adhesive forces shaping early C. elegans embryos. With K. Yamamoto @ittoku04.bsky.social G. Charras' lab @gcharras.bsky.social & my team @turlierlab.bsky.social shorturl.at/xv7G5 1/6
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Cornelia Schwayer @cschwayer.bsky.social · 03/08/2026
I will be opening my research group at the Max Delbrück Center later this year to unravel the principles governing the unique context sensing capacity of the liver www.mdc-berlin.de/schwayer and am looking for enthusiastic PhD applicants.
mdc-berlin.de
Schwayer Lab
The mammalian liver possesses a regenerative capacity that is unmatched by any other organ. Following injury, liver epithelial cells can proliferate or even change their identity, enabling the organ t...
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epithelial mechanics fan club @epimechfc.bsky.social · 26/07/2026
How do tissues safely remove cells? Join me, @marija-matejcic.bsky.social in this perspective on the past, present and future of epithelial cell extrusion 🧵 0/16
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Levayer Lab @levayerr.bsky.social · 06/07/2026
After a quite long process, we are happy to share the last version of our article describing unexpected results regarding the coupling between local cell death and proliferation (heroic revision effort from @ralitzastaneva.bsky.social ) urldefense.com/v3/__https:/...
urldefense.com
A global response contributes to tissue size robustness upon local induction of apoptosis
Tissue resilience requires tight coupling between cell proliferation, growth, and death.1,2,3,4It is assumed to be based on compensatory proliferation…
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Guillaume Jacquemet @guijacquemet.bsky.social · 30/06/2026
Delighted to share our latest preprint "NucleiSky enables cross-scale multimodal registration of microscopy data using nuclei constellations" www.biorxiv.org/content/10.6... Code and App: github.com/CellMigratio...
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Prisca Liberali @priscaliberali.bsky.social · 30/06/2026
It is out 😍 check it out!! Multiscale integration of tissue and chromatin context converts cell heterogeneity into stable intestinal patterning. @cschwayer.bsky.social @silviabarbiero.bsky.social @davidbrueckner.bsky.social @ehannezo.bsky.social www.cell.com/cell/fulltex...
cell.com
Multiscale integration of tissue and chromatin context converts cell heterogeneity into stable intestinal patterning
During regeneration, tissues must translate transient cellular variability into stable spatial organization. Tissue architecture generates a density-dependent window of heterogeneity in the mechanosen...
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Dagmar Iber & CoBi @iberd.bsky.social · 08/06/2026
🧰 New tool alert! ⚙️ #MorphoGrad, an open-source toolbox for simulating reaction–diffusion systems in 1D and 2D tissues, with cell-to-cell parameter heterogeneity & graphical user interface. No heavy coding required. Explore complex morphogen gradient models interactively. doi.org/10.1016/j.xp...
cell.com
MorphoGrad: A MATLAB toolbox for simulating steady-state morphogen gradients under cell-to-cell variability
Studying morphogen gradient-based tissue patterning in silico while accounting for biological variability remains challenging. Here, we present a MATLAB-based protocol for simulating steady-state morp...
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Dagmar Iber & CoBi @iberd.bsky.social · 28/05/2026
🔬⚙️💻 Excited to share #OptiCell3D, our new image-based framework for inferring cell mechanical properties with high precision from 3D microscopy. www.biorxiv.org/content/10.6... #ComputationalBiology #CellBiology #Biophysics #OpenSource
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Turlier lab @turlierlab.bsky.social · 12/04/2026
How can we learn tissue mechanics directly from cell patterns and images? In our new preprint, we introduce VertAX, a differentiable vertex-model framework in JAX for simulating epithelia, inferring parameters, and designing target tissue behaviors. shorturl.at/PUzT0 1/5
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Gaëlle Letort @gaellel.bsky.social · 27/03/2026
I'm happy to present our new tool, EpiCure, a napari plugin to ease correction of segmentation and tracking of epithelia movies, developed in @devstempasteur.bsky.social
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Levayer Lab @levayerr.bsky.social · 27/03/2026
Happy to share the heroic effort of @gaellel.bsky.social to reduce our segmentation pain through EpiCure (Epithelial Curation), a napari plugin easing the curation of epithelial segmentation developed with several groups of @devstempasteur.bsky.social. www.biorxiv.org/content/10.6... See more 👇
biorxiv.org
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epithelial mechanics fan club @epimechfc.bsky.social · 22/03/2026
Hello epithelia enthusiasts! I’m @inesfournon.bsky.social and I study epithelial mechanics in sea anemones 🪼 Did you know epithelial cell extrusion had never been described outside bilaterian animals before? Well… not anymore 👀 Read ⬇️🧵1/9
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Gaëlle Letort @gaellel.bsky.social · 10/03/2026
Thanks to #Appose hackaton with @jytinevez.bsky.social, @ctrue.bsky.social, @nkiaru.bsky.social, @msphan.bsky.social, @strigaud.bsky.social, Carlos, Thomas and Julie, DeXtrusion can be **INSTALLED** and run to detect cell extrusions directly from Fiji 🤩! Appose is amazing
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Dagmar Iber & CoBi @iberd.bsky.social · 11/02/2026
What determines the sharpness of cell fate boundaries in gradient-based patterning? We quantified #transition #zone #widths (TZW) across seven progenitor domain boundaries spanning the entire dorsal-ventral axis of the developing #mouse #neural #tube. Preprint: doi.org/10.64898/202... 🧵 1/6
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Levayer Lab @levayerr.bsky.social · 21/05/2025
Many cells during development are exposed to caspase activation and yet survive. Why some die and not others ? We found out that the memory of previous caspase activation bias significantly later death comitment and bias death distribution and single cell decision www.biorxiv.org/content/10.1...
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Tom Cumming @tomcumming.bsky.social · 21/05/2025
The effector caspases drive cell death, but their activation can often be survived, so how do cells make this decision? Our new preprint from @levayerr.bsky.social shows that instantaneous caspase activity is important, but past activation has a key role to play! www.biorxiv.org/content/10.1...
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Dagmar Iber & CoBi @iberd.bsky.social · 15/01/2025
How does an #embryo build an energy-efficient #fractal #lung in time for the first breath at birth? 🫁 Discover the mechanical forces shaping the bronchial tree in our latest preprint: #LungDevelopment #Mechanobiology doi.org/10.1101/2025... 👇Thread 🧵(1/9)
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Dagmar Iber & CoBi @iberd.bsky.social · 07/01/2025
Our paper "Morphometry and mechanical instability at the onset of epithelial bladder cancer" is now out in @naturephysics.bsky.social : rdcu.be/d5rTP #BladderCancer #Cancer #Tumor #Biomechanics #Morphometry #ComputationalModeling
rdcu.be
Morphometry and mechanical instability at the onset of epithelial bladder cancer
Nature Physics - Carcinoma subtypes are normally linked to specific genetic alterations, but tissue mechanical changes also play a role. Now, aberrant morphologies resembling bladder carcinoma are...
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Antoine Zalc @antoinezalc.bsky.social · 06/01/2025
Inserm is opening up 67 tenure positions (Researchers junior and senior), covering disciplines dedicated to biomedical research and human health. Deadline: January 20, 2025 pro.inserm.fr/rubriques/co...
pro.inserm.fr
Competitive recruitment for researcher CRCN 2025 - Inserm pro
In 2025, Inserm is opening up 67 tenure positions (Researchers junior and senior), covering disciplines dedicated to biomedical research and human health. Registration deadline: January 20, 2025.
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Levayer Lab @levayerr.bsky.social · 05/01/2025
Wishing you all the best for 2025 ! ...and a little late thread on our recent preprint studying how tissue growth is affected by mild induction of apoptosis. Drosophila wing disc readjusts global tissue size by modulating dev. time without local proliferation boost. www.biorxiv.org/content/10.1...
biorxiv.org
Developmental delay ensures global tissue size robustness upon local induction of apoptosis
The capacity of our tissues to cope with external and internal stress relies on the tight coupling between cell proliferation, cell growth and cell death. This coupling is assumed to be based on compe...
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Virtual Gastrulation Zoom Talks @vgzt2021.bsky.social · 30/12/2024
🌞 Eastern sessions: New this season! Happening bi-weekly on Wednesdays to better suit attendees in Eastern time zones. Explore the schedule for an exciting lineup of speakers and look for the ☀️ symbol in the flyers for individual sessions. [3/4]
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Levayer Lab @levayerr.bsky.social · 21/12/2024
Looking for a job still connected to acamedia and research ? Do you like interacting with a lot of people, outreach activity, organising scientific events ? Do you have good writing and organisation skills ? We may have a job for you👇 (permanent position) emploi.pasteur.fr/offre-de-emp... 🙏RT
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Naomi Moris @nmoris.bsky.social · 18/12/2024
Have you ever wondered how your back formed? The human embryo makes a neural tube (future spinal cord) and somites (trunk muscle/bone) from ~d20. They’re formed at the same time and place, so we used human Trunk-like Structures (hTLS) to investigate their ‘co-development’… (1/7)
Scanning electron microscope image of a human trunk-like structure (left) and human embryo (right) false coloured for somites (magenta) and neural tube (gold).
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Development @dev-journal.bsky.social · 19/12/2024
Short-range Fgf signalling patterns hindbrain progenitors to induce the neurogenesis-to-oligodendrogenesis switch Read this #OpenAccess Research Article by Tim Yeung and David Wilkinson @crick.ac.uk: doi.org/10.1242/dev.204256
Figure 1 (D) Transverse sections of hindbrain segment centre of r5 in WT embryo, representative of other hindbrain segments, at stages 20-42 hpf with HCR RNA-FISH for fgf20a (cyan), etv5b (magenta) and membrane markers EGFP-CAAX (white). Progenitors expressing etv5b are aligned with the position of fgf20a-expressing neurons, where the basal processes of these progenitors are adjacent to the signalling source. n≥8 per stage.
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Idoia Quintana-Urzainqui @idoiaeu.bsky.social · 04/12/2024
🦈 🦈 Catshark embryo (S canicula) around stage 28 🦈🦈
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Manuel Thery @manuelthery.bsky.social · 27/11/2024
Mix two motors of opposite polarity with microtubules and they will partition space ! Microtubules will get organized in polar and active barriers, sorting the two motors in separated domains, leading to the emergence of a new type of patterns. #morphogenesis doi.org/10.1073/pnas... (1/n)
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Kristina Stapornwongkul @kstapornwongkul.bsky.social · 28/11/2024
Hello Bluesky 🦋 I’m excited to speak at next week’s VGZT! Please join in case you want to know more about my work on the metabolic control of germ layer proportions #devbio #metabolism #stemcellmodels @vgzt2021.bsky.social
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Peter Fabian @fabianlab.bsky.social · 21/11/2024
Check out how #neuralcrest cells 🔬 migrate (animal= #zebrafish, white cells=sox10+, start=10 somites stage, anterior=top)
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Ulrich Schwarz @ulrichschwarz.bsky.social · 19/11/2024
Great work by @omdrozdowski.bsky.social who found that the bubbly vertex model naturally leads to cell bulging and extrusion at topological (pentagonal) defects in curved epithelia. Read the preprint at arxiv.org/abs/2411.07141
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Current Biology @currentbiology.bsky.social · 19/11/2024
You asked for it...
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Michelle Frei @michellefrei17.bsky.social · 13/02/2024
🚨Preprint alert 🚨Do you need a highly sensitive kinase biosensor? Want to multiplex multiple sensors or look at nanoscale activity architecture? Our far-red chemigenetic kinase biosensors are what you are looking for. Thanks to everyone involved! tinyurl.com/d36e2t4m
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bioRxiv Developmental Biology @biorxiv-devbio.bsky.social · 15/11/2024
Timely neurogenesis enables increased nuclear packing order during neuronal lamination www.biorxiv.org/content/10.1101/202…
biorxiv.org
Timely neurogenesis enables increased nuclear packing order during neuronal lamination https://www.biorxiv.org/content/10.1101/2024.11.12.623216v1
The coordination of cell proliferation, migration, and differentiation is crucial for organogenesis
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Christopher Thomas @ovarylab.bsky.social · 14/11/2024
Hello! 👋 I’m Christopher, a reproductive biologist and group leader at IBDM, France 🇫🇷 My lab uses #LiveImaging to study how the dynamic #ovary makes healthy #eggs 🔬🥚 Here’s a video from my postdoc in the Schuh lab, where we visualised #ovulation live in isolated mouse follicles 💥 📄 bit.ly/3Ya8dEL
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Teun Huijben @teunhuijben.bsky.social · 13/11/2024
🚀Thrilled to announce #inTRACKtive: a web-based tool for exploring massive cell-tracking datasets, no software installation required! Open your browser and dive into terabytes of developmental biology data 🐭🪰🪱🪲🐠 Preprint: biorxiv.org/content/10.1... Repository: github.com/royerlab/inT... 🧵1/n
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Milstein Lab @ UofT @milsteinlab.bsky.social · 13/11/2024
Our most recent work looked at the mechanical effects on competition between two model bacteria competing for space and resources within microchannels.
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Kate Cavanaugh @katecavanaugh.bsky.social · 14/11/2024
Hi Everyone! 👋 Allow me to introduce myself. I'm Kate. I'm a postdoc studying early mammalian development, mechanics, and reproductive aging. Check out one of my favorite developmental stages in a mouse embryo in this video:
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Joyce Yu @joyceyu.bsky.social · 09/11/2024
Do you work in #DevBio and want to introduce the fascinating world of developmental biology to your family and friends? You can show them this science documentary, produced by the British Society for Developmental Biology, The Company of Biologists and Cambridge Filmworks! 📽️ youtu.be/avrmIs3vPUQ?...
youtu.be
BSDB - The Fascinating World of Developmental Biology (full length)
YouTube video by The Company of Biologists
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The Company of Biologists @biologists.bsky.social · 12/11/2024
Welcome to our Bluesky account. With so many of our community members now present on Bluesky, we felt it was the right time to join. We will use this account to bring you news from the Company, our journals and our community sites.
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Antoine Zalc @antoinezalc.bsky.social · 12/11/2024
🚨🚨🚨 Call is now open!!! Wanna become our new beloved colleague and be part of a stimulating (and friendly) scientific community ??? We are perfectly located in beautiful Paris with exciting work environment and state-of-the-art core facilities APPLY 👇👇👇👇👇
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a. villars @avillars.bsky.social · 13/11/2024
Actually now I know why everything was quiet in the previous space. Everyone has already moved here
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a. villars @avillars.bsky.social · 13/11/2024
It took me a lot of time to move here from the old space. Everything still feels very empty so far
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