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Chloé Roffay

@chloeroffay.bsky.social
1.1K followers 510 following 46 posts

From physics to cells to gastruloids • Postdoc @dianapinheiro.bsky.social 🇦🇹• PhD @rouxlab.bsky.social 🇨🇭 • alum cpes @psl-univ.bsky.social 🇨🇵 • she/her • Views my own

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Reposted by Chloé Roffay
Swiss National Science Foundation (SNSF) @snsf.ch · 9h
📣 #NewCall: SNSF Starting Grants 2027 For researchers wanting to lead their own independent project and research team in Switzerland. SNSF Starting Grants are open to all disciplines and topics. 🗓️ Call opening: 1 February 2027 Submission deadline: 4 May 2027 Read more: sohub.io/hj2m
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Institut Jacques Monod @ijmonod.bsky.social · 24/09/2026
📢 Institut Jacques Monod Seminar 📅 October, 2 📍Institut Jacques Monod Invited by the @spinalorga.bsky.social Lab, @chloeroffay.bsky.social will present an Institut Jacques Monod seminar on the theme "Uncovering the forces driving fate and form of amnion in human gastrula models" ➡️ buff.ly/XdWQi6B
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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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Development Ageing and Adaptation Research unit @dev2a-lab.bsky.social · 22/09/2026
📢Call for Group Leader in our unit within the Institut de Biologie Paris Seine in Paris @ibps.bsky.social www.ibps.sorbonne-universite.fr/fr/Recherche...
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Ali Seleit @aliseleit.bsky.social · 22/09/2026
🐟 New preprint ! 🐟 For Hippo pathway aficionados. We generated a CRISPR/Cas9 mediated single-copy endogenous Yap1-mGreenLantern fusion protein in medaka to follow Yap1 dynamics in vivo, through embryogenesis and beyond. And it is such a beautiful line ! 🧵
biorxiv.org
Spatio-temporal visualisation and manipulation of endogenous Yap1 in medaka
A key requirement to address fundamental questions in developmental biology is the ability to visualise and manipulate endogenous signalling proteins in vivo. Here we generate such an enabling experim...
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Reposted by Chloé Roffay
Development @dev-journal.bsky.social · 15/09/2026
In preprints – the embryo, the placenta and lessons from developmental metabolism @bernasozen.bsky.social explores how recent #preprints by Aguilera-Castrejon et al. & Xu et al. reveal metabolic roles for embryonic and extra-embryonic tissues during mid-gestation. doi.org/10.1242/dev....
doi.org
In preprints – the embryo, the placenta and lessons from developmental metabolism
This article discusses the preprinted work of Lokshtanov and colleagues (Lokshtanov et al., 2026 preprint) as well as that of Xu and team (Xu et al., 2026 preprint). As preprints, these works have…
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Reposted by Chloé Roffay
Floris BOSVELD @florisbosveld.bsky.social · 11/09/2026
Join us for the symposium Morphogenesis: Where Form Takes Shape Oct. 27-28 Institute Curie Paris Free attendance, but registration is required. Short talks and posters will be selected from submitted abstracts. Abstract submission deadline: Oct. 10, 2026.
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PLOS Biology @plosbiology.org · 10/09/2026
The growth of #plant leaves is highly dynamic and should be coordinated, but how is #leaf flatness preserved? @roederlab.bsky.social &co show that global coordination of growth across the leaf blade is required to maintain flatness in #Arabidopsis @plosbiology.org 🧪 buff.ly/QUMxOcF
While WT leaves progressively flatten, jaw-D leaves curve at the base. Gaussian curvature displayed as heatmaps on wildtype (left) and jaw-D mutant (right) leaf meshes. Gaussian curvature represents both the magnitude and direction of curvature such that values further from zero represent greater curvature. Orange arrows indicate high positive curvature that develops at the base of jaw-D leaves. Black scale bars = 200 µm.
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Prisca Liberali @priscaliberali.bsky.social · 08/09/2026
What if we stop asking only how cells build tissues and ask how tissues shape cells? That’s what we’ll explore at Modelling Life from Tissues to Cells 🇨🇭 lakeconferences.org/conf/8334d9b...
lakeconferences.org
Conference - Modelling Life from Tissues to Cells: Coordination and Robustness - Lake Conferences
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The EMBO Journal @embojournal.org · 07/09/2026
Dynamic control of cell state transitions during tissue morphogenesis Elias Barriga et al @eliasbarrigalab.bsky.social review how gene expression, chromatin modifications & microenvironmental biophysical factors contribute to robust coordination of morphogenesis link.springer.com/article/10.1...
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Development @dev-journal.bsky.social · 04/09/2026
A developmental biologist's guide to mechanics Read this Primer from our special issue #DevSIextracellular by Jialing Cao, @raphclement.bsky.social, @pflenne.bsky.social and colleagues. journals.biologists.com/dev/article/...
Intracellular force-generating mechanisms drive tissue-scale mechanical behaviors. The central schematic provides an overview of the major cellular force-generating mechanisms in developing tissues and serves as the basis for the four surrounding panels, which illustrate how these mechanisms generate distinct tissue-scale mechanical behaviors. It includes actomyosin contractility, actin polymerization, cell–cell adhesion and ion transport through membrane channels. These processes generate and transmit forces within and between cells. (A) ATP-dependent ion transport establishes an osmotic pressure difference (ΔP), driving water influx into the lumen. Black radial arrows indicate the outward mechanical effect of the luminal pressure during lumen expansion. (B) Actin polymerization at the tissue edge generates protrusive forces that drive coordinated, directional collective cell migration. Here, leading edge refers to the advancing front of a moving cell group, featuring specialized lead
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Reposted by Chloé Roffay
Development @dev-journal.bsky.social · 02/09/2026
Fundamental limits on symmetry breaking by Turing-like activator-inhibitor mechanisms Read this Research Article from our special issue #DevSIextracellular by Daniel Muzatko, Bijoy Daga and @hiscocklab.bsky.social from @uniofaberdeen.bsky.social. journals.biologists.com/dev/article/...
An atlas of symmetry-breaking activator-inhibitor circuits. (A-D) Predicted expression patterns for each type of inhibitory mechanism and corresponding regulatory circuit(s) from Fig. 4. Plots show spatial distributions of relative mRNA concentrations for the activator (blue) and inhibitor (red), alongside levels of signalling pathway activation (green). (A) Pathway activation is co-expressed (in-phase) with both the activator and inhibitor expression domains. (B) Pathway activation is either in-phase (B1) or out-of-phase (B2) with both the activator and the inhibitor. (C) Pathway activation is out-of-phase (anticorrelated) with the inhibitor, and is either: in-phase with the activator (C1), uniform across the tissue (C2) or out-of-phase with the activator (C3). (D) The two ligands of the two signalling pathways are either expressed out-of-phase with each other (D1) or co-expressed in the same location (D2).
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Reposted by Chloé Roffay
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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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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Raphaël Clément @raphclement.bsky.social · 27/08/2026
A developmental biologist's guide to mechanics, just out in Development! In which we learn about the three pillars of any mechanical model: forces, mechanical properties, and boundary conditions. @pflenne.bsky.social @alessandrochppr.bsky.social @caojialing1002.bsky.social @dev-journal.bsky.social
journals.biologists.com
A developmental biologist's guide to mechanics
Summary: A guide to mechanics in development: unlock how forces, material properties and geometry shape the forms of life.
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Martí Planasdemunt Hospital @martiplanasdemunt.bsky.social · 12/08/2026
More than 3 weeks already passed by at @kitp-ucsb.bsky.social QBio Summer Course. So much people to learn from. Wanting to keep my eyes, ears and mind open for what’s coming. What a beautiful job! These last days I’ll be working with Honeypot ants, Myrmecocystus navajo. They ara amazing👇🏼
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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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PLOS Biology @plosbiology.org · 26/08/2026
Neuromesodermal progenitor cells generate multiple tissues. This study by @abinagui.bsky.social @edinuni-irr.bsky.social @osvaldo-chara.bsky.social @cellysally.bsky.social &co maps their functional heterogeneity and links TF expression thresholds to #cellFate. 🧪 #AcademicSky plos.io/4xWA8Ze
3D spatial organization of neural and mesodermal lineages in the developing embryo.

A 3D image projection of a day 7 mouse embryo, stained for neural SOX2 (magenta), mesodermal TBXT (green) and DAPI (blue) revealing the precise spatial organization of neural and mesodermal transcription factors that govern body axis elongation.
Credit: Filip J. Wymeersch
License Agreement: The copyright holder agrees to publish this image under the Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Note: This image was acquired by confocal microscopy. No generative AI was used in data acquisition or processing.
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Olivier Borkowski @oborkowski.bsky.social · 22/08/2026
The structural origin of irreversible transitions in biological networks doi.org/10.1073/pnas...
doi.org
The structural origin of irreversible transitions in biological networks | PNAS
Cellular processes often exhibit irreversible state transitions even after external signals responsible for a transition are withdrawn. Long-standi...
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Allison Kann @apkann.bsky.social · 21/08/2026
A new pharynx for #FluorescenceFriday. ✨ Hofstenia miamia are able to completely regenerate their pharynx after amputation, building new muscle (🟠, transgenic line) that surrounds an internal ciliated tube (🔵, b-tubulin).
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Swiss National Science Foundation (SNSF) @snsf.ch · 10/07/2026
📣 #OpenCall: Project Funding Researchers can determine the nature and topic of their research projects independently. Open to all disciplines. 📆 Submission deadline: 1 October 2026 ➡️ Read more: sohub.io/b6cm
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bioRxiv Developmental Biology @biorxiv-devbio.bsky.social · 20/08/2026
Tissue mechanics sets developmental scaling of collective cell migration www.biorxiv.org/content/10.64898/20…
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Chloé Roffay @chloeroffay.bsky.social · 16/08/2026
During QBio break, we went to LA (Getty museum) and Stéphane Bern was there
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Reposted by Chloé Roffay
bioRxiv Developmental Biology @biorxiv-devbio.bsky.social · 15/08/2026
Reciprocal mechanochemical feedback couples neural crest migration and neurulation www.biorxiv.org/content/10.64898/20…
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UC Berkeley MCB @berkeleymcb.bsky.social · 14/08/2026
MCB is hiring Assistant Professors across 3 divisions!: 🧪BBS: aprecruit.berkeley.edu/JPF05483 🧬GGED: aprecruit.berkeley.edu/JPF05481 🦠IMM: aprecruit.berkeley.edu/JPF05486 🗓️ Application Deadline: October 19, 2026 🔗 Click the links or scan the QR codes to learn more and apply
MCB is hiring 3 Assistant Professor positions across 3 divisions: 

Biochemistry, Biophysics and Structural Biology (BBS); Genetics, Genomics, Evolution, and Development (GGED); and Immunology and Molecular Medicine (IMM)

BBS application link: https://aprecruit.berkeley.edu/JPF05483

GGED application link: https://aprecruit.berkeley.edu/JPF05481

IMM application link: https://aprecruit.berkeley.edu/JPF05486
Assistant Professor of Immunology and Molecular Medicine (IMM). IMM application link: https://aprecruit.berkeley.edu/JPF05486Assistant Professor of Biochemistry, Biophysics and Structural Biology (BBS). BBS application link: https://aprecruit.berkeley.edu/JPF05483Assistant Professor of Genetics, Genomics, Evolution, and Development (GGED). GGED application link: https://aprecruit.berkeley.edu/JPF05481
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Chloé Roffay @chloeroffay.bsky.social · 14/08/2026
💣💣💣
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Allison Kann @apkann.bsky.social · 12/08/2026
Part 1 of my postdoc work is officially published! 🥳 Hofstenia miamia has emerged as a new model system because of its ability to accomplish whole-body regeneration - but that also means that animals must be able to heal any type of wound. How do they do this? 🧵 1/13 www.nature.com/articles/s41...
nature.com
A flexible repertoire of wound closure strategies precedes whole-body regeneration - Nature Communications
Animals capable of whole-body regeneration can heal virtually any wound. Here they show that Hofstenia miamia accomplishes this feat through variable morphogenetic strategies that depend on which epit...
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Marko Kaksonen @kaksonen.bsky.social · 11/08/2026
Endocytic clathrin coats are surprisingly dynamic: triskelia turn over in seconds. How is the turnover regulated and what is it for? Read Anne-Laure Boinet's preprint with @rouxlab.bsky.social www.biorxiv.org/content/10.6...
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Srinivas Lab @srinivas-lab.bsky.social · 11/08/2026
Happy to share our new eLife paper on tissue dynamics during anterior-posterior axis formation. elifesciences.org/reviewed-pre...
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Stefan Schoenfelder @stefanschoenfelder.bsky.social · 07/08/2026
Very happy to see this story finally out in @natbiotech.nature.com: www.nature.com/articles/s41... Fantastic collaboration with @lancasterlab.bsky.social on how to identify and ‘fix’ differentiation-compromised human pluripotent stem cells. @babrahaminst.bsky.social @mrclmb.ac.uk 🧵 below
nature.com
Reversible epiblast regionalization determines differentiation potential of human pluripotent stem cells - Nature Biotechnology
The differentiation variability of human pluripotent stem cell lines is diagnosed and corrected.
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Xavier Trepat @xaviertrepat.bsky.social · 06/08/2026
When tension increases, the nucleus escapes. New paper out in @natphys.nature.com. Check out Tom's thread for a summary 👇
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Kristina Stapornwongkul @kstapornwongkul.bsky.social · 06/08/2026
First published teamwork of the lab 🎉! We wrote a review about emerging concepts of how metabolism promotes, regulates and changes during gastrulation. We hope it will be useful for anyone interested in the emerging field of developmental metabolism. www.sciencedirect.com/science/arti...
sciencedirect.com
A metabolic view of gastrulation: Coordinating signalling, epigenetics and morphogenesis
Gastrulation is the morphogenetic process by which the single-layered pluripotent epiblast is reorganised into the three germ layers and the basic bod…
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Thibaut Brunet @thibautbrunet.bsky.social · 30/07/2026
Always one of the nicest cell biology conferences!
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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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Cees Dekker @ceesdekker.bsky.social · 22/07/2026
We built a a self-dividing synthetic cell ! Check out this #CDlab preprint on BioRxiv: www.biorxiv.org/content/10.6... Great work by 1st author Charu Sharma who encoded dynaminA in a genome and expressed that in liposomes that then divide into daughter cells! Collaboration with Koenderink lab!
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Mattia Serra @mattiaserra.bsky.social · 21/04/2026
📢Preprint: Positional information (PI) and information flows in dynamic tissues. Our mathematical framework quantifies, from data, how the coupled stochastic dynamics of cell positions and properties preserve, degrade and generate PI. @alex-plum.bsky.social www.biorxiv.org/content/10.6...
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Chloé Roffay @chloeroffay.bsky.social · 22/07/2026
#Qbio26 with @dianapinheiro.bsky.social introducing the stem cell module!
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adamezracohen.bsky.social @adamezracohen.bsky.social · 20/07/2026
We developed a new approach for mapping absolute membrane voltage, based on dynamic photocycle control in Voltron2. www.biorxiv.org/content/10.6... Here's my favorite example: human iPSC colonies break into electrical domains as they begin to differentiate.
Top image shows a greyscale picture of some cells.  Bottom image shows a voltage map overlay in color, with two electrical "domains".Wide-area view of membrane voltage in human iPSC colonies.
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Journal of Cell Biology @jcb.org · 20/07/2026
Michaud, @andrewgoryachev.bsky.social, von Dassow, @xenresearchcenter.bsky.social et al. identify a versatile cortical pattern-forming circuit based on #Rho, F-#actin, Ect2, & RGA-3/4 rupress.org/jcb/article/... 📕 In "Collective Behaviors and Self-Organization in Cells" rupress.org/jcb/collecti...
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Christophe 🔬 Leterrier @christlet.bsky.social · 17/07/2026
🚨 Want to start your lab in Marseille on a broad neuronal/brain development theme? There's an exciting tenure track opportunity at @inp-marseille.bsky.social and others Marseille institutes! Check more details here: neuro-marseille.org/en/blog/juni... or contact me if you have any question
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Chloé Roffay @chloeroffay.bsky.social · 17/07/2026
Do you think I can pass the US border with this in my suitcase without problems? It weight around 2 kgs...
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bioRxiv Developmental Biology @biorxiv-devbio.bsky.social · 16/07/2026
Organoids reveal niche-specific mechanotransduction-guided human cortical patterning and cell fate acquisition www.biorxiv.org/content/10.64898/20…
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Frédéric Restagno @frestagn.bsky.social · 11/07/2026
Liste des contrats de chaire de professeur junior prévu par l'article L. 952-6-2 du code de l'éducation et par l'article L. 422-3 du code de la recherche. www.legifrance.gouv.fr/jorf/id/JORF...
legifrance.gouv.fr
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 10/07/2026
Mechanochemical Feedback Enables Efficient Navigation in Complex Chemical Gradients www.biorxiv.org/content/10.64898/20…
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Pedro Beltrao @pedrobeltrao.bsky.social · 06/07/2026
My department @eth-dbiol.bsky.social at ETH Zurich is hiring for a tenured professor in mol cell bio and biochemistry (associate/full). The position is within the Institute of Biochemistry (www.bc.biol.ethz.ch) and it is fairly open within their scope of research. www.nature.com/naturecareer...
nature.com
Professor of Molecular Cell Biology and Biochemistry - Zurich, Switzerland job with ETH Zurich | 12861386
The Department of Biology at ETH Zurich invites applications for the above-mentioned tenured professorship at the Institute of Biochemistry
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Benoit Ladoux @bladoux.bsky.social · 03/07/2026
Nice paper from Ruppel et al. in @natphys.nature.com www.nature.com/articles/s41...
nature.com
A minimal in vitro assay for cell intercalation highlights the importance of interfacial tension and migratory forces - Nature Physics
Cell intercalation is an exchange of cell neighbours. Now it is shown in a minimal system of four cells that intercalation is driven by junction tension and migratory forces.
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Abdel Rahman Abdel Fattah @ar-abdelfattah.bsky.social · 23/06/2026
🫀🧲Master's Thesis @ Abdel Fattah Lab (CeMM) and Mendjan Lab (IMBA), Vienna Develop next-generation human cardiac #organoids (cardioids) with magnetic bioprinting. Seeking students with a passion for interdisciplinary research/ #Bioengineering. Apply here: cemm.onlyfy.jobs/en/job/iy0ni...
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Cees Dekker @ceesdekker.bsky.social · 16/06/2026
WORK: our Bionanoscience department at TU Delft is looking to hire an Assistant Professor in Biophysics of Living Systems. Apply! Deadline 30 July careers.tudelft.nl/job/Delft-As... RT=nice
careers.tudelft.nl
Assistant Professor in Biophysics of Living Systems
Assistant Professor in Biophysics of Living Systems
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Nature Cell Biology @natcellbio.nature.com · 01/07/2026
☕Mani, Tardif, Rossier et al. show that mechanical stress triggers caveolin-1 release from caveolae, enabling its diffusion in the plasma membrane and interaction with signaling effectors to regulate intracellular signaling. 👉https://rdcu.be/frvPe www.nature.com/articles/s41...
nature.com
Diffusing caveolin-1 scaffolds regulate mechanosignalling - Nature Cell Biology
Mani, Tardif, Rossier et al. show that mechanical stress triggers caveolin-1 release from caveolae, enabling its diffusion in the plasma membrane and interaction with signalling effectors to regulate ...
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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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