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Juanma García-Arcos

@juanmagararc.bsky.social
788 followers 573 following 61 posts

Group leader SNSF Ambizione at EPFL, Lausanne. Formerly, Postdoc Roux lab, Geneva; PhD Piel lab, Paris. #cytoplasts #actomyosin #cellbio #microscopy #membranes #biophysics #extracellular_vesicles #sciart Lab website: celldynamicslab.com

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Reposted by Juanma García-Arcos
worm @rfksbrainworm.bsky.social · 02/10/2026
If you ever wondered why visible light is those particular wavelengths, it's because life evolved to see in the narrow range where water is transparent
Diagram of absorption of emf by water. There's a gap right that dips in the 500 nm range
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Diana Pinheiro @dianapinheiro.bsky.social · 29/09/2026
If you are in Paris, don’t miss Chloe’s talk 👇👇For all aficionados of mechanics, cell bio and developmental biology, her work has it all 🤩
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Reposted by Juanma García-Arcos
Scott Juntti @scottjuntti.bsky.social · 27/09/2026
When a fish sees the world move, it immediately swims with it. This is the optomotor response: a visual reflex found across animals that helps us maintain our position and orientation as our surroundings appear to drift. 🐟👀
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H. B. Beryl Rappaport @hbrappap.bsky.social · 22/09/2026
Our description of fire amoeba, 𝘐𝘯𝘤𝘦𝘯𝘥𝘪𝘢𝘮𝘰𝘦𝘣𝘢 𝘤𝘢𝘴𝘤𝘢𝘥𝘦𝘯𝘴𝘪𝘴, is now online at Cell! Thanks @oliverio.bsky.social and amazing team for questioning the limits of eukaryotes! 🔥 www.cell.com/cell/fulltex...
cell.com
A geothermal amoeba sets a new upper temperature limit for eukaryotes
The amoeba Incendiamoeba cascadensis demonstrates that eukaryotic life can withstand temperatures beyond what was thought possible and sheds light on molecular strategies for survival in extreme heat.
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Giovanni D’Angelo @giodang.bsky.social · 23/09/2026
#lipidtime: It's a lipid universe. Today in Nature we publish the Lipid Brain Atlas, the first map of membrane lipid composition across the entire mouse brain, a layer of organisation that cell-type and transcript maps had left out. #lipidomics #neuroscience #BrainAtlas
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Claire Dessalles @clairedessalles.bsky.social · 23/09/2026
NeMo 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...
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Omaya Dudin 𓂆 ¦🍉¦🦠¦🔬¦ @dudinlab.bsky.social · 21/09/2026
Must admit, ever since I was a kid, I’ve dreamt of seeing microscopy images of #protists in @lemonde.fr Today, protists are everywhere, and several images were taken by the team. And seeing #ichthyosporeans there too?! 🥹 One step closer to showcasing the beauty of the invisible microbial world. 🔬✨
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Benoît de Courson @bdecourson.bsky.social · 20/09/2026
Pour percer en sciences humaines, mieux vaut s'appeler Irène, Claire, Martin ou François que Dylan, Mickael, Mauricette ou Jeannine. Petite exploration des données de Cairn, et un 🧵 méthodo…
Comparaison du nombre de signature dans Cairn par prénom à leur nombre attendu, compte tenu des naissances et du genre. On devine la surreprésentation des prénoms bourgeois et la forte sous-représentation des prénoms populaires.
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Erdinc Sezgin @sciezgin.bsky.social · 17/09/2026
New paper out: Plasma membrane order maps functional diversity in immune cells We showed how biophysical state of the membranes correlates with the activity of immune cells such as migration and killing. www.nature.com/articles/s41...
nature.com
Plasma membrane order maps functional diversity in immune cells - Nature Chemical Biology
Cells undergo membrane remodeling in response to the environment to perform specific functions. Now, a cytometry-based method with immune cell biomarker analysis captures variations in plasma membrane...
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Reposted by Juanma García-Arcos
FocalPlane @focalplane.bsky.social · 15/09/2026
Don’t miss the second webinar in our new series on cell migration, featuring talks from @ankita13jha.bsky.social, @raphclement.bsky.social and @katrinavelle.bsky.social. 🗓️Thursday 17 September at 15:00 BST For more info and to register: focalplane.biologists.com/2026/09/03/f...
focalplane.biologists.com
FocalPlane features... cell migration webinar 2 - FocalPlane
FocalPlane features... cell migration webinar 2 - News
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Juanma García-Arcos @juanmagararc.bsky.social · 11/09/2026
Today, the last day of the #FLIM-FCS course at @helsinki.fi with great lectures from @mhakala.bsky.social and Maria Trulsson from @zeiss-microscopy.bsky.social. I got to experiment with an old projector lying around!!
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Science Magazine @science.org · 10/09/2026
A new project called Posters.science is proposing that online perusal could help raise the visibility and utility of the lowly poster—and be accessible to any researcher, even those who couldn’t attend a conference. scim.ag/3Tl8hmU
scim.ag
Conference posters could garner a wider audience, thanks to a new online platform
The staple format also warrants a deeper rethink, some researchers say
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Reposted by Juanma García-Arcos
FocalPlane @focalplane.bsky.social · 10/09/2026
📢One week to go! Join us on Thursday 17 September at 15:00 BST (UTC+1) for our webinar on new models for studying cell migration, hosted by @pjsaez.bsky.social & @valeriaventurini.bsky.social. You’ll hear talks from @ankita13jha.bsky.social, @raphclement.bsky.social and @katrinavelle.bsky.social.
focalplane.biologists.com
FocalPlane features... cell migration webinar 2 - FocalPlane
FocalPlane features... cell migration webinar 2 - News
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Juanma García-Arcos @juanmagararc.bsky.social · 10/09/2026
1/3 A few snapshots from the past intense days at the University of Helsinki for our FLIM and FCS course! We combined lectures, hands-on microscopy and analysis with plenty of questions and discussion. A fantastic group of researchers to learn with. 🔬 #FLIM #FCS #Microscopy
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Ankita Jha @ankita13jha.bsky.social · 10/09/2026
A beautiful spotlight on our recent work on the polarity maintenance in bleb-based motility in metastatic cancer cells by @vickysanzmoreno.bsky.social and Dipanwita Das is published in Developmental Cell.
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epithelial mechanics fan club @epimechfc.bsky.social · 09/09/2026
Rembert, 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...
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Journal of Cell Biology @jcb.org · 05/09/2026
#Ceramide mediates cell-to-cell ER stress transmission by modulating #membrane fluidity. From Yazhen Huo, Likun Wang and colleagues (Institute of Biophysics, Beijing): rupress.org/jcb/article/... 📕 From our #Lipid and #Membrane collection: rupress.org/jcb/collecti... #EMBOLipidCode
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Tamas Nagy @tamasnagy.com · 06/09/2026
Even with all the advancements in automated cell tracking getting us to 90%+ accuracy...that's still a lot of broken tracks over long movies! Our brains are pretty good at this so I made Vizsla 🐕, a little @napari.org plugin, to help you fix your tracks manually. 👉 pypi.org/project/napa...
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Florian Wollweber @florianwollweber.bsky.social · 05/09/2026
Exciting news! Our @erc.europa.eu StG project ARCHAEAOLOGY got funded 🎉 We’ll combine cryoET/EM, ExM & spatial omics to explore the subcellular organization of Asgard archaea. Job ads coming soon! 🦠 ❄️ 🔬 #TeamTomo #ArchaeaSky #MicroSky
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myosinactncrazy.bsky.social @myosinactncrazy.bsky.social · 04/09/2026
www.nature.com/articles/s41... The membrane-to-cortex distance regulates mDia1 activity to control cortical mechanics
nature.com
The membrane-to-cortex distance regulates mDia1 activity to control cortical mechanics - Nature Communications
The surface of mammalian cells is a multi-layered composite structure. The authors combine advanced biophysical methods with cryo-electron tomography to identify the gap between the membrane and the a...
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Reposted by Juanma García-Arcos
Cosmos: El Legado de Sagan 🪐 @cosmos1980.bsky.social · 04/09/2026
Cuando estés triste, recuerda que hay una diminuta proteína llamada kinesina esforzándose al máximo para mantenerte con vida. Recorre el interior de tus células llevando de un lugar a otro los materiales que necesitan para seguir funcionando.
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Carlos Pérez-González @cperez-gonzalez.bsky.social · 03/09/2026
I am very happy and grateful to be one of the new awardees of the ERC #StartingGrant (@erc.europa.eu) ! 🎉 In EvoSelf, we will study how tissue mechanochemical feedbacks evolve during tumor progression, and how these changes influence tumor growth, metastasis, and relapse.
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Juanma García-Arcos @juanmagararc.bsky.social · 04/09/2026
@lara-kruger.bsky.social congratulations 🎉🎉🎉🎉
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Juanma García-Arcos @juanmagararc.bsky.social · 04/09/2026
@cperez-gonzalez.bsky.social congratulations 🎉🎉🎉🎉
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Reposted by Juanma García-Arcos
FocalPlane @focalplane.bsky.social · 03/09/2026
We are excited to invite you to the second webinar in our cell migration series. In this webinar, we focus on new models for studying cell migration with talks from @ankita13jha.bsky.social, @raphclement.bsky.social & @katrinavelle.bsky.social. More info⤵️: focalplane.biologists.com/2026/09/03/f...
FocalPlane features... emergent models and quantitative analysis of cell migration
Thursday 17 September, 15:00-16:30 BST (UTC+1) 
Organised by Organised by Pablo J. Sáez and Valeria Venturini
FocalPlane logo
Picture of Ankita Jha (National Institutes of Health, USA)
Decoding bleb driven signaling in cancer disease progression
Picture of Raphaël Clément (L’Institut de Biologie du Développement de Marseille (IBDM), France)
Navigating without neurons or muscles: Locomotion in Trichoplax
Picture of Katrina Velle (University of Massachusetts Dartmouth, USA)
Naegleria amoebae seek confinement and crawl persistently through narrow spaces
#FocalPlaneFeatures
focalplane.biologists.com
Image of Naegleria.
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Miki Ebisuya @ebisuyamiki.bsky.social · 02/09/2026
New paper from the lab! We developed a self-organizing bovine muscle and blood vessel-like network from ES cells, bringing us one step closer to creating structured cultured beef steak! 🥩🔬 www.nature.com/articles/s41... 1/
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Thibaut Brunet @thibautbrunet.bsky.social · 02/09/2026
🚨 New preprint alert! 🚨 Choanoflagellates reorganize their global cytoskeletal architecture within seconds to explore confined microspaces. This is the main PhD work of the amazing @maitefreired.bsky.social www.biorxiv.org/content/10.6... A tread 🧵⬇️
biorxiv.org
Rapid repurposing of microvillar content drives a flagellate-to-amoeboid switch in the closest relative of animals
Animal cells extensively remodel their cytoskeleton during differentiation and can notably switch between two major motility modes: flagellum-based swimming and actin-based crawling. We previously sho...
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Reposted by Juanma García-Arcos
@MEmilieTerret @memilieterret.bsky.social · 02/09/2026
Great speakers, great science, great location = great meeting! EMBO workshop Forces across scale April 27-30, 2027 in Porto. meetings.embo.org/event/27-for...
meetings.embo.org
Forces across scales
This EMBO Workshop on Forces Across Scales will provide an integrative perspective on mechanobiology, a rapidly advancing field that examines how mechanical forces shape biological systems across mol…
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Institut Jacques Monod @ijmonod.bsky.social · 01/09/2026
📣Paris Cytoskeleton Day - Registrations are open! 📅 November, 24th 📍Institut Jacques Monod Abstract submission closes on 2 November Registration closes on 16 November 🔗 pcd2026.sciencesconf.org
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Moumita (Mo) Das @physbee.bsky.social · 30/08/2026
I gave the Pagels Public Lecture at the Aspen Center for Physics this Wednesday, and the recording is now on YouTube: why your knee cartilage doesn't wear out, until it does. Hemingway, phase transitions, and the physics of a remarkable tissue. www.youtube.com/watch?v=io8P...
youtube.com
Why Your Knees Don’t Wear Out (Until They Do)
YouTube video by Aspen Physics
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Erdinc Sezgin @sciezgin.bsky.social · 28/08/2026
Open postdoctoral fellow position in our lab on "𝐌𝐨𝐥𝐞𝐜𝐮𝐥𝐚𝐫 𝐇𝐨𝐬𝐭-𝐏𝐚𝐭𝐡𝐨𝐠𝐞𝐧 𝐈𝐧𝐭𝐞𝐫𝐚𝐜𝐭𝐢𝐨𝐧𝐬". Are you interested in macromolecular interactions during host-pathogen interactions both 𝐞𝐱𝐩𝐞𝐫𝐢𝐦𝐞𝐧𝐭𝐚𝐥𝐥𝐲 𝐚𝐧𝐝 𝐜𝐨𝐦𝐩𝐮𝐭𝐚𝐭𝐢𝐨𝐧𝐚𝐥𝐥𝐲? Want to join our team? apply here 👇 ki.varbi.com/what:job/job...
ki.varbi.com
Postdoktor i molekylära värd-patogeninteraktioner
Vill du bidra till medicinsk forskning av toppkvalitet? Vi söker en postdoktoral forskare som kommer att studera makromolekylära interaktioner vid värd-patogeninteraktioner med hjälp av avancerade
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Giovanni D’Angelo @giodang.bsky.social · 28/08/2026
Registration is still open for the EPFL Latsis Symposium 2026, "Decoding the Cell: Modeling, Predicting, and Engineering Cellular States." 29–30 Oct, Olympic Museum, Lausanne. Quake, Haniffa, Engelhardt, Liberali, Paluch, Kundaje and more. Abstracts close 15 Sept. latsis2026.epfl.ch/event/1/
latsis2026.epfl.ch
EPFL Latsis Symposium 2026
Join us in Lausanne to connect with the global community shaping the future of cell understanding and engineering.
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Jan Lammerding - Lab @lammerdinglab.bsky.social · 26/08/2026
Interested in nuclear mechanobiology and want to know what some of the big open questions are in the field? Read our recent editorial with input from >15 leading experts in the field, along with a list of review articles on nuclear mechanobiology: www.tandfonline.com/doi/full/10....
tandfonline.com
Nuclear mechanobiology: a brief history and five unresolved questions
Published in Nucleus (Vol. 17, No. 1, 2026)
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Kate 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... 1/11
nature.com
Elevated contractility drives implantation failure in mouse embryos from aged females - Nature Cell Biology
Cavanaugh 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...
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Juanma García-Arcos @juanmagararc.bsky.social · 25/08/2026
Hike and good vibes with the Gönczy lab 🇨🇭⛰️
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Juanma García-Arcos @juanmagararc.bsky.social · 25/08/2026
New at EPFL this October: We are launching a different PhD course 🧪📊 BIO-707 is almost lecture-free: bring your own data, build better figures + a story, get peer feedback, revise, repeat. Supported by the teaching development funds at EPFL and CAPE 🙌 3 spots left! edu.epfl.ch/coursebook/e...
Poster for BIO-707 course
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Nobel Prize @nobelprize.org · 24/08/2026
We've arrived on Bluesky! We hope you will follow along as we share inspiring, motivational and exciting content about the achievements and individuals that have been awarded a Nobel Prize. Stay tuned.
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Joël Lemière @joellemiere.bsky.social · 27/07/2026
New preprint! How does a cell "know" how big to make its nucleus? This has puzzled biologists since the 1800’s. We show the answer is physics: colloid osmotic pressure. 🧵1/5
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eLife @elife.bsky.social · 23/08/2026
Lipid packing contributes to the confinement of caveolae to the plasma membrane
buff.ly
Lipid packing contributes to the confinement of caveolae to the plasma membrane
Membrane insertion of Dyngo-4a results in a dynamin-independent inhibition of caveola dynamics, revealing that outer leaflet lipid packing in the plasma membrane contributes to the confinement of caveolae.
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Hawa Racine Thiam @hawa-racine.bsky.social · 20/08/2026
Turns out the way DNA is packed inside the nucleus can tune the mechanics of the entire cell! Super excited that our first paper is out in Nature Communications! www.nature.com/articles/s41... !
nature.com
Chromatin decompaction within the nucleus increases plasma membrane tension promoting NETosis execution, independently of transcription - Nature Communications
Chromatin organizes nuclear DNA, but whether it actively regulates whole-cell mechanics remains unknown. Here, we used NETosis to show that chromatin decompaction within the nucleus increases plasma membrane tension and cell volume, establishing chromatin as a regulator of cell mechanics.
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Benjamin Riley @benjaminjriley.bsky.social · 20/08/2026
Both the Economist and others suggest this study demonstrates that AI can help students. So I contacted the lead researcher to figure out how many. Answer: Out of ~26,000 kids, a total of 20. And five months after starting to use AI, only four continued to spend 65 minutes on homework. Four.
Graph of student exam scores correlated to homework completion time for to groups, students using AI and those that did not. There is a slight spike for studens using AI who also maintained extensive homework completion time. As described in post, the number of students falling into this bucket was 20 out of 26,000.
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Nature Cell Biology @natcellbio.nature.com · 29/07/2026
☕Jha et al. show that the transmembrane protein CD44 restricts EGFR mobility to maintain an EGFR–PI3K–Rac gradient during bleb-based cell migration. www.nature.com/articles/s41...
nature.com
CD44 restricts EGFR mobility to polarize cytoskeletal signalling modules driving bleb-based migration - Nature Cell Biology
Jha et al. show that the transmembrane protein CD44 restricts EGFR mobility to maintain an EGFR–PI3K–Rac gradient during bleb-based cell migration.
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Pablo J. Sáez @pjsaez.bsky.social · 19/08/2026
Blebbing cell under confinement?
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Max Planck Institute for Molecular Biomedicine @mpi-muenster.bsky.social · 19/08/2026
What a wonderful short film for @sarawickstrom.bsky.social Sara Wickström's Körber Prize for European Science 2026! Our director explains how cells sense physical forces and translate them into gene activity. Thanks, @koerber-stiftung.de and Wagnervision GmbH 🎥 koerber-stiftung.de/en/media/sar...
koerber-stiftung.de
Sara Wickström – Körber Prize Winner 2026: The hidden senses of cells
Wickström discovered how cells sense the physical world around them. Her research showed that cells can “feel” forces such as pressure and stretching and relay these signals all the way to their DNA. ...
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Patrick Oakes @pwoakes.bsky.social · 18/08/2026
@myosincity.bsky.social and I are looking to hire a new postdoc this winter! Open to anyone broadly interested in studying how cells generate and interpret mechanical signals. Interested applicants can reach out to me and Jordan directly.
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Life Sciences Switzerland (LS2) @lifesciswitzerland.bsky.social · 18/08/2026
Ready to take the next step towards an independent academic career? Apply for PIs of Tomorrow: The Future of Swiss Research at the LS2 Annual Meeting 2027. Present your research vision, receive feedback from senior academics, compete for awards, and expand your network. 📅 Deadline: 5 October 2026
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Ran Blekhman @blekhman.bsky.social · 09/08/2026
Huge faculty recruitment effort at the University of Chicago -- a division-wide, open-rank search looking to hire about 20 faculty across 5 research areas in biology. Come be our colleague! Full announcement: uchicago.app.box.com/s/ckih9zv3rj...
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Juanma García-Arcos @juanmagararc.bsky.social · 09/08/2026
Not every day I get to see a lecture from a Nobel prize laureate! #MAF2026
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Juanma García-Arcos @juanmagararc.bsky.social · 09/08/2026
Today was the FLIM workshop at #MAF2026 in Copenhagen, organized by Line Mørkholt Lund from ASiMoF and Nynne Christensen from CAB. They opened by asking what frustrates us most about FLIM. The answer was clear: analysis.
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Juanma García-Arcos @juanmagararc.bsky.social · 08/08/2026
In Copenhagen 🇩🇰 for a week to teach at the FLIM satellite event of #MAF2026 and give a talk at the Monday session. Ping me if you are attending and are interested in Fluorescence Lifetime Imaging Microscopy!🔬 maf2026.dk/
maf2026.dk
Methods and Applications in Fluorescence 2026 - Home
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