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Julia Eckert

@juliaeckert.bsky.social
2K followers 512 following 106 posts

@dfg.de Walter Benjamin Fellow & Postdoctoral Researcher @yap-lab.bsky.social | Chairperson @epimechfc.bsky.social | Mechanobiology - Cell & Tissue Mechanics - Soft Matter Physics - Image Analysis 👉 julia-eckert.github.io

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Reposted by Julia Eckert
myosinactncrazy.bsky.social @myosinactncrazy.bsky.social · 30/09/2026
www.biorxiv.org/content/10.6...
biorxiv.org
Self-centering steady-state flows emerge in confined actomyosin networks
The actin cytoskeleton drives shape changes and transport in cells and supports mechanical signal transmission. However, how cells control and use active cytoskeletal flows at the mesoscale is not wel...
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Reposted by Julia Eckert
myosinactncrazy.bsky.social @myosinactncrazy.bsky.social · 30/09/2026
www.molbiolcell.org/doi/10.1091/...
molbiolcell.org
Cell–matrix interactions drive functional compartmentalization of mitochondria during 3D migration | Molecular Biology of the Cell
Cells migrating through three-dimensional (3D) tissues adapt their mechanical properties in response to extracellular matrix architecture through migratory plasticity. In primary human dermal fibrobla...
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Reposted by Julia Eckert
arXiv cond-mat.soft Soft Condensed Matter @condmatsoft-bot.bsky.social · 29/09/2026
Tianxiang Ma, Lasse Bonn, Valeriia Grudtsyna, Nigar Abbasova, Martin Cramer Pedersen, Nuno A. M. Araujo, Amin Doostmohammadi: Cell division sets a universal flow geometry in cell layers arxiv.org/abs/2609.34631 arxiv.org/pdf/2609.34631 arxiv.org/html/2609.34631
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Julia Eckert @juliaeckert.bsky.social · 27/09/2026
Fascinating to see how patterns appear across scales and systems! 🦓🫆 Thanks @benswedlund.bsky.social for this amazing #EpithelialMechanics thread! 👇
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Reposted by Julia Eckert
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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Victor Yashunsky @yashunsky.bsky.social · 23/09/2026
The puzzle of living 'cowlicks' and cellular swirls at phys.org phys.org/news/2026-09...
phys.org
From swarming bacteria to tissue cells, living matter defies classic physical models of motion
A new study led by researchers from Ben-Gurion University of the Negev (BGU) reveals that living matter violates previously known physical principles of symmetry when cellular flows form and break dow...
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Reposted by Julia Eckert
Benoit Ladoux @bladoux.bsky.social · 23/09/2026
What 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...
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Osvaldo Chara @osvaldo-chara.bsky.social · 22/09/2026
We've just released StressNET: a machine-learning method that infers the mechanical state of tissues! Check it out! (1/8)
Mechanical stress inference (color-coded, right) from a microscopy image of a zebrafish neuromast (left).
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Isabelle Bonnet @ibonnetsu.bsky.social · 21/09/2026
Get lucky with your nematic analysis — DeftPunk is here! Open-source tool for orientation fields, topological defect detection (position, charge, orientation), and splay-bend anisotropy estimation. 🔬 @softmatter.rsc.org doi.org/10.1039/d6sm...
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Reposted by Julia Eckert
Development @dev-journal.bsky.social · 18/09/2026
Pathway to Independence – an interview with Yamini Ravichandran In this interview, Yamini discusses her work focusing on understanding tissue-scale processes, regeneration and morphogenesis. doi.org/10.1242/dev....
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Sophie Acton @actonlab.bsky.social · 16/09/2026
Latest preprint now online! doi.org/10.64898/202... Veronika Lachina generates a vertex model to integrate active cellular forces and passive extracellular mechanics to produce rapid, cyclical tissue remodelling Collaboration with the brilliant @yanlanmao.bsky.social at @lmcb-ucl.bsky.social
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Sudheer Peneti Ph.D @sudheerpeneti.bsky.social · 15/09/2026
Wow! So excited to see on cover #MBoC #ASCB in Forces On and Within the cells issue. Vimentin expressed highest in epithelial leader cells and studied its role in leader cell mechanics. For interested ones, here is the link www.molbiolcell.org/doi/10.1091/... Thanks @ascbiology.bsky.social
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Reposted by Julia Eckert
Robert Arkowitz @robertarkowitz.bsky.social · 14/09/2026
www.nature.com/articles/s41...
nature.com
CFM: confinement force microscopy—a dynamic, precise and stable microconfiner for traction force microscopy in spatial confinement - Nature Methods
CFM enables tunable cell confinement for measuring traction forces exerted by single cells and cell aggregates in tissue-mimicking microenvironments.
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Reposted by Julia Eckert
Alex Ludwig @alexludwig.bsky.social · 14/09/2026
How do epithelial cells make a lumen as they polarize? We have some exciting new answers to this long standing question. Check out our new paper in which we show that lumen initiation is driven by large vacuoles that deliver a pre-assembled apical cortex to the AMIS: www.nature.com/articles/s41...
nature.com
Bulk delivery of a preassembled apical surface initiates epithelial lumen formation - Nature Communications
Epithelial lumen formation is fundamental to organ development, yet how apical surfaces first emerge remains unclear. Ghosh, Martin, and Chen et al., show that lumen initiation is driven via bulk deli...
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Reposted by Julia Eckert
Julia Eckert @juliaeckert.bsky.social · 12/09/2026
From 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/
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Julia Eckert @juliaeckert.bsky.social · 12/09/2026
From 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/
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Reposted by Julia Eckert
epithelial mechanics fan club @epimechfc.bsky.social · 08/09/2026
Santhosh, S., & Serra, M. (2026). Achiral Odd Mechanics in Cell Monolayers. bioRxiv, 2026-07. #EpithelialMechanics www.biorxiv.org/content/10.6...
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Reposted by Julia Eckert
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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arXiv physics.bio-ph Biological Physics @physicsbioph-bot.bsky.social · 04/09/2026
Mina Kamao, Hiroyuki Miyoshi, Takaaki Nara, Hiroki Miyazako: Internal geometries regulate the symmetry of defect configurations in cell populations confined to domains with a negative Euler c... arxiv.org/abs/2609.03328 arxiv.org/pdf/2609.03328 arxiv.org/html/2609.03328
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Reposted by Julia Eckert
Victor Yashunsky @yashunsky.bsky.social · 06/09/2026
Our @natphys.nature.com paper is now out! We find that defect creation & annihilation in bacteria and cells collectives spontaneously break mirror symmetry—unpredicted by active nematic theory. #softmatter #chiral #ActiveMatter #TopologicalDefects #LivingMatter #CellPolarity rdcu.be/yWTRbT26p9qa
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epithelial mechanics fan club @epimechfc.bsky.social · 06/09/2026
Hi! I’m @vitoryang.bsky.social, a PhD candidate studying how cells migrate collectively during development. My work focuses on cytoskeleton dynamics and Rho GTPase signalling, using Drosophila border cells as a genetically tractable in vivo model.
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Development @dev-journal.bsky.social · 04/09/2026
The role of geometry in morphogenesis Read this Review from our special issue #DevSIextracellular by Ryan Harrison, Olivier Hamant and @timesaunders.bsky.social. journals.biologists.com/dev/article/...
Role of geometry in shaping tissues. Multiple factors, including cell shape (top left), boundary constraints (top right), topological inputs (bottom left) including from different cell alignment defects (±1/2) and biophysical factors (bottom right) impact how the final tissue form emerges (centre). Centre shows images of a 48 h neuruloid (left; magenta, DAPI; green, actin) and a young Arabidopsis flower (right) treated with oryzalin (depolymerised microtubules) thus showing isotropic growth, but no defect in patterning (organs are still initiated in the right position).
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Reposted by Julia Eckert
Development @dev-journal.bsky.social · 03/09/2026
Biophysics of lumen morphogenesis Read this Review from our special issue #DevSIextracellular by Byung Ho Lee, @hiraiwatetsuya.bsky.social, Masaki Sano, Alf Honigmann, Daniel Riveline, @anne-grapin.bsky.social and colleagues. doi.org/10.1242/dev....
Physical principles governing lumen formation and tissue morphology. (A) A lumen surrounded by an epithelial cell layer is shaped by the balance between luminal pressure and mechanical resistance from the tissue and the ECM layers. Ion pumping (Jion) generates a gradient of ions across the monolayer and an osmotic pressure difference (ΔΠ). Water can enter through a flux (Jwater), which generates a hydrostatic pressure difference, ΔP, that can expand the lumen. This hydrostatic pressure is opposed by cortical tensions at the apical, basal and lateral cell surfaces, respectively (γapical, γbasal and γlateral), by cell–cell adhesion, nadh, and by the elastic and viscous properties of both the tissue and the ECM. The detailed inset illustrates how cell division time and tissue osmolarity contribute to the evolving mechanical state of the organoid. Osmotic pressure triggers the generation of hydrostatic pressure, which is faced by the cell monolayer and might, in turn, increase its mass by proliferating. Timescales of increase in luminal volume, cell proliferation, tissue and ECM viscosities contribute to determining the lumen shape. (B) Young–Laplace law applied to the curved epithelial/luminal interface. The pressure difference across the tissue layer depends on cortical tension and curvature according to the Young–Laplace equation (Box 1). Here, R1 and R2 are the two principal radii of curvature of the curved interface. They originate from the fact that a three-dimensional surface can bend along two independent directions. For a spherical lumen, the two radii are equal, whereas for an irregular or elongated lumen, they may differ locally.
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Reposted by Julia Eckert
Ricard Alert Zenón @ricardalert.bsky.social · 02/09/2026
New preprint! We found an active wetting transition in cell aggregates. We obtain an active Young-Dupré condition, which allows us to capture states of partial and complete wetting. With group members MJ Franco-Oñate and Hanno Hennighausen! arxiv.org/abs/2608.28912
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Andreas Schoenit @andreasschoenit.bsky.social · 01/09/2026
Excited to share a new preprint! We address a longstanding question related to stratifying tissues: What are the physical mechanisms that drive epidermal cell delamination? Find out why this👇 traction force pattern emerges and how it is linked to upward cell motion: www.biorxiv.org/content/10.6...
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arXiv physics.bio-ph Biological Physics @physicsbioph-bot.bsky.social · 01/09/2026
MJ Franco-O\~nate, Hanno I. Hennighausen, Ricard Alert: Active wetting transition in cell aggregates arxiv.org/abs/2608.28912 arxiv.org/pdf/2608.28912 arxiv.org/html/2608.28912
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Reposted by Julia Eckert
Sushil Dubey @dubey837.bsky.social · 31/08/2026
How surface curvature shapes muscle tissue architecture: New preprint from our lab shows that myoblasts self-organize into helical structures driven by substrate curvature, revealing a geometric mechanism that also regulates myogenic differentiation.
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Reposted by Julia Eckert
myosinactncrazy.bsky.social @myosinactncrazy.bsky.social · 30/08/2026
Microscale matrix defects suppress tension-dependent protrusions and stall collective cell migration: Cell Reports www.cell.com/cell-reports...
cell.com
Microscale matrix defects suppress tension-dependent protrusions and stall collective cell migration
Zmuda et al. show that microscale defects on soft collagen-IV stall epithelial migration via filopodial sensing and intercellular communication of cytoskeletal disruption. Stiffer matrices, switching ...
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Reposted by Julia Eckert
MwahahahahahadScientist @mads100tist.bsky.social · 29/08/2026
Do you work with microscopy images and segment to quantify or track? Do you study cell biology? development? Gather round! Let me tell you about FOCUS-3D, a segmentation algorithm that is fast, accurate and can be used on any model. We used it here to study zebrafish development. 🧪 (thread)
biorxiv.org
FOCUS‑3D: Robust, generalizable volumetric cell segmentation for three‑dimensional fluorescence microscopy
Understanding how cells establish spatial organization within tissues is a fundamental question in life sciences. While modern three-dimensional fluorescence microscopy captures large-volume tissue ar...
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Reposted by Julia Eckert
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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Marta Batet Palau @martabatetpalau.bsky.social · 27/08/2026
So excited my PhD work is finally out! A huge collaborative effort of the Ruprecht lab, especially of my co-authors @laurafbianchi.bsky.social & @hannamariahakkinen.bsky.social Check below Laura's thread if you want to know more about E-cadherin novel and unexpected role in epithelial phagocytosis
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Reposted by Julia Eckert
myosinactncrazy.bsky.social @myosinactncrazy.bsky.social · 24/08/2026
www.nature.com/articles/s41... Actin based cell chirality emerging at the boundary of 2D-microtissue directs chiral multicellular pattern formation
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Benoit Ladoux @bladoux.bsky.social · 22/08/2026
Happy to share our new paper @natcomms.nature.com on the role of active nematics on myoblast fusion and myotube growth! www.nature.com/articles/s41... Amazinf work from @dubey837.bsky.social, @yoannletoquin.bsky.social and Aleksandra Ardaševa!
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epithelial mechanics fan club @epimechfc.bsky.social · 21/08/2026
Islam, S. T., Tang, Y., Boliver, H., Bi, D., & Fowler, V. M. (2025). Nonmuscle myosin IIA (NMIIA) regulates anisotropic cell tension to maintain the hexagonal packing of mouse lens meridional row cells. Molecular biology of the cell, 36(10), ar124. #epithelialMechanics buff.ly/iucn3FO
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bioRxiv Biophysics @biorxiv-biophys.bsky.social · 20/08/2026
Morphogenesis of a stratified cell mound at a vortex defect www.biorxiv.org/content/10.64898/20…
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Science X / Phys.org @sciencex.bsky.social · 09/07/2026
Active epithelial tissues can still behave like glass, with slow, trapped cell regions beside faster ones. Simulations matched the pattern only when mechanochemical feedback and crowding were included. doi.org/hb9x7v
phys.org
Unraveling the glass-like nature of epithelial tissues
In a new study, researchers at the Indian Institute of Science (IISc) have resolved a longstanding mystery by showing how epithelial tissues exhibit slow-moving, glass-like behavior despite their fast-paced biological activity.
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epithelial mechanics fan club @epimechfc.bsky.social · 16/08/2026
Tissue morphogenesis demands massive deformations, yet tissues must stay coherent. This is achieved through cell intercalation, also known as T1 transitions. But what drives them mechanically? I'm @arturruppel.bsky.social, and I'll walk you through the physics, from whole embryos down to four cells
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myosinactncrazy.bsky.social @myosinactncrazy.bsky.social · 12/08/2026
www.biorxiv.org/content/10.6... Why is the purse string not enough?
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epithelial mechanics fan club @epimechfc.bsky.social · 12/08/2026
Ruppel, A., Misiak, V., Arzash, S., Selma-Herrador, D., Boudou, T., ... & Balland, M. (2026). A minimal in vitro assay for cell intercalation highlights the importance of interfacial tension and migratory forces. Nature Physics, 1-14. #EpithelialMechanics buff.ly/T5ZnvnR
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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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Mattia Serra @mattiaserra.bsky.social · 05/08/2026
Preprint📣: Living tissues can exhibit odd mechanics without chirality. Our minimal model shows that orientational order can generate an odd modulus—inferable from experiments—and reproduces flows & stress localization around 1/2 defects. @sreejithsanthosh.bsky.social www.biorxiv.org/content/10.6...
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epithelial mechanics fan club @epimechfc.bsky.social · 05/08/2026
Andersen, B. H., Safara, F. M. R., Grudtsyna, V., Meacock, O. J., Andersen, S. G., Durham, W. M., Araujo, N. A. M., & Doostmohammadi, A. (2025). Evidence of universal conformal invariance in living biological matter. Nature Physics, 21(4), 618–623. www.nature.com/articles/s41... #EpithelialMechanics
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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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Inés Fournon Berodia @inesfournon.bsky.social · 04/08/2026
Very pleased to finally share the main story from my PhD, now published in @natcomms.nature.com ! 🎉 Using a sea anemone we discovered and characterised epithelial cell extrusion as the mechanism underlying starvation-induced cell loss. 🔗 Open-access article: www.nature.com/articles/s41...
nature.com
Epithelial cell extrusion underlies starvation-induced cell loss in a sea anemone - Nature Communications
Epithelial cell extrusion in a sea anemone shares key hallmarks with bilaterians and is dynamically regulated by nutritional status. During starvation-induced body shrinkage, extrusion likely contribu...
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Rita Mateus @ritamateus.bsky.social · 03/08/2026
New preprint alert!!! Super proud to finally share an authentic 'tour-de-force' from the amazing PhD students Shivani Gunnan @shivanigunnan.bsky.social, Max Kotz and Lucas Ribas, in collaboration with @friedrich-group.bsky.social 👇a small thread www.biorxiv.org/content/10.6...
biorxiv.org
Developmental growth rates adapt to enable self-correction of organ morphology after injury.
Proportional organ growth requires tissue-level control of cell behavior. Yet the cues that adapt growth rates, especially after organ injury, remain unclear. Here, we uncover that developing organs a...
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Marina B. Cuenca @cuencam15.bsky.social · 31/07/2026
Sad to be saying goodbye to Drosophila, but excited to get this work out on bioRxiv! If you are interested in the interplay of tissue flows and cool ways to mess them up, this read is for you :) Thanks to colleagues and co-authors! www.biorxiv.org/content/10.6...
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epithelial mechanics fan club @epimechfc.bsky.social · 31/07/2026
Braat, Q. J. S., Storm, C., & Janssen, L. M. C. (2024). Formation of motile cell clusters in heterogeneous model tumors: The role of cell-cell alignment. Physical Review E, 110(6), 064401. journals.aps.org/pre/abstract... #EpithelialMechanics
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Yanlan Mao @yanlanmao.bsky.social · 30/07/2026
This epic paper, which has been a heroic 10 year journey for the lead author, Ricardo Barrientos, is finally out in Cell today! Many thanks to all co-authors, especially Billie Meadowcroft and Andela Saric for their beautiful MD simulations www.cell.com/cell/fulltex...
cell.com
Basement membrane turnover controls cell shape
Basement membranes are scaffolds of proteins, like collagen, that give organs shape. During development, basement membranes must adapt to the growing organ. We infer how fast the basement membrane ada...
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epithelial mechanics fan club @epimechfc.bsky.social · 28/07/2026
Maroudas-Sacks, Y., Suganthan, S., Garion, L., Ascoli-Abbina, Y., Westfried, A., Dori, N., Pasvinter, I., Popović, M., & Keren, K. (2025). Mechanical strain focusing at topological defect sites in regenerating Hydra. Development, 152(4), DEV204514. doi.org/10.1242/dev.... #EpithelialMechanics
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