Roux Lab, Geneva

Active nematic pumps | PNAS Microfluidics involves the manipulation of flows at the microscale, typically requiring external power sources to generate pressure gradients. Alte...

Microfluidic pumping with active nematics! Self-organized and self-sustained. No external pumps.

@pnas.org @ub.edu

www.pnas.org/doi/10.1073/...

#ActiveMatter #Microfluidics #SoftMatter

Maria Tettamanti shows that inhibition of TORC2 by the small amphipath PalmC induces the TORC2-dependent internalization of sterols. Congrats to Maria and all coworkers involved, and to EMBOj for the efficient review process: use review commons! @biology-unige.bsky.social @sciencesunige.bsky.social

Etienne @membramics-lab.bsky.social is very happy to visit @rouxlab.bsky.social in Geneva! great people, great projects, good memories...

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Congratulations @centriolelab.bsky.social @dudinlab.bsky.social and @gautamdey.bsky.social for your publication in @cp-cell.bsky.social: Charting the landscape of #cytoskeletal diversity in #microbial eukaryotes #Expansion #Microscopy @sciencesunige.bsky.social
www.unige.ch/medias/en/20...

*ALL*source data and Python notebooks are available (you can reproduce all figures!)
🔗 doi.org/10.6084/m9.f...
We hope this helps make lifetime analysis transparent and comparable across setups.
📄 www.biorxiv.org/content/10.1...

@rouxlab.bsky.social
#FLIM #FlipperTR #Microscopy #OpenScience

Fluorescence lifetime estimation: a practical approach using Flipper-TR FLIM Flipper-TR is a membrane dye sensitive to lipid packing widely used to probe membrane tension in live cells via fluorescence lifetime imaging microscopy (FLIM). However, no consensus currently exists ...

🚨 New preprint out!
“Fluorescence lifetime estimation: a practical approach using Flipper-TR FLIM” with Tithi Mandal and @rouxlab.bsky.social
We benchmark and describe step-by-step Flipper-TR FLIM measurements across different set-ups and and strategies.

www.biorxiv.org/content/10.1...

I am pleased to 📣 today’s superb thesis defense by Christian Schroer on “Chemical strategies for studying lipid signaling and transport”. Part of his work was recently published in the JLR; the other part will follow soon. A very proud and somewhat tipsy “Doktorvater” 🥂

Research Assistant or Master Thesis worker, group Hakala Research Assistant or Master Thesis worker, group Hakala

Undergraduate/internship/master's thesis position: jobs.helsinki.fi/job-invite/4...

Doctoral Researcher, group Hakala Doctoral Researcher, group Hakala

PhD student position: jobs.helsinki.fi/job-invite/4...

I have a PhD student and an undergrad student positions open at the Institute of Biotechnology @helsinki.fi We are using reconstitution, cell and structural biology to study protein-membrane interactions and membrane microdomain formation. Links to calls below! Feel free to drop a message and share!

Impaired hematopoiesis and embryonic lethality at midgestation of mice lacking both lipid transfer proteins VPS13A and VPS13C VPS13A and VPS13C are bridge-like lipid transport proteins with distinct subcellular localization and function, and their absence is linked with chorea-acanthocytosis and Parkinson's disease, respecti...

"Impaired hematopoiesis and embryonic lethality at midgestation of mice lacking both lipid transfer proteins VPS13A and VPS13C" out now in PLOS Biology
journals.plos.org/plosbiology/...

Order matters! Aurelien Roux @rouxlab.bsky.social studied the formation of multi-cellular tornado-like structures and regeneration of heads in hydra to share with us how stress fields, topology and geometry of initial tissue organization set the sequence of morphogenesis. #MBIMPG2025

Previous preprint is now published in RSC Chemical Biology.
If you are interested in plasma membrane labeling, see the paper! 👇
pubs.rsc.org/en/content/a...

YouTube video by Roux Lab - University of Geneva Cell forces, order and flows during In vitro reconstitution of morphogenesis

Nice discussions after the talk given online yesterday at cytophys.org, presenting the work of @pauguillamat.bsky.social @clairedessalles.bsky.social @yamini-ravichan.bsky.social @oriolmb.bsky.social and Tithi Mandal. Available on the lab youtube channel at:
youtu.be/g-7HomnPdtk

A multicellular star-shaped actin network underpins epithelial organization and connectivity - Nature Communications The combined role of cellular junctions and actomyosin networks in tissues remains unclear. Here, the authors identify a tissue-scale star-shaped network of actomyosin that preserves cell shape, limit...

Ever wished to become an actin star? 😎
Then try getting suspended above a non-adhesive substrate.
www.nature.com/articles/s41...

Hello microscopy and imaging experts and enthusiasts!
We are looking for a staff scientist to join us here in Geneva to work on microscopy and image analysis projects! See the link for the job announcement (in French and in English).

Please apply and/or repost!

jobs.unige.ch/www/wd_porta...

The @embo.org ESCRT meeting was packed with membrane remodeling from every branch of the tree of life🌳. Some awesome science 🧪 highlights in the next posts 🧵. But a first impression… the venue!! Wow, Caux castle up a cogwheel train, overlooking Lac Léman! Perfect! 🌄 Thank you @rouxlab.bsky.social 🤗

What a fantastic ESCRT meeting, the field is going strong and full of exciting science. Many thanks to @rouxlab.bsky.social @cellarchlab.com @jujumathieu.bsky.social @magromayor.bsky.social @majarad.bsky.social for organising such a a great event

🤩 Last week I successfully defended my PhD!
It was such a special day, made even better by having friends, family, and colleagues there with me. Thanks for all the support and kind words!
Huge thanks to my jury members for the thoughtful feedback and conversations.

@soldatilab.bsky.social

Squishing jellies!! - the Node Behind the paper: “Topology changes of Hydra define actin orientation defects as organizers of morphogenesis”

Thank you for this opportunity @the-node.bsky.social to let me share the behind the story of my postdoc article from the @rouxlab.bsky.social here’s to squishing jellies!!

This was a truly exciting talk from Aurelien Roux @rouxlab.bsky.social from Univ. Geneva 👏👏. From his landmark work on membranes to tissues now, the continuing theme is the role of geometry, topology and curvature in morphogenesis. Thanks for visiting us 🤩

The amazing tour de force of the great @lcferme.bsky.social is now out in its final form in @ScienceAdvances (not on Bluesky???). It was hard work and all the conceptual advance was her doing. Check it out: www.science.org/doi/epdf/10....

Just one week to go ⏳ until the "Cellular Interfaces Across Scales: From Molecules to Tissue Dynamics" meeting @sfb1348.bsky.social @uni-muenster.de
We can't wait to see you there!
crc1348-conference.ycode.site
#DynamicCellularInterfaces #Münster

High levels of Cdc42 GTPase underlie an all-or-none decision to fuse Cdc42 is a Rho-family GTPase conserved across eukaryotes, where it plays essential roles in cell polarization. In single-celled yeast systems, Cdc42 is a key driver of symmetry breaking and polarized ...

The lab is on a roll. 2nd preprint in as many weeks!

High levels of Cdc42 GTPase underlie an all-or-none decision to fuse.

Great team effort led by PhD students @sajjitasaha.bsky.social and @aiswaryasajeevan.bsky.social

www.biorxiv.org/content/10.1...

@biology-unige.bsky.social

Schematics of the actin fusion focus

New lab preprint! High resolution mapping of the actin fusion focus reveals myosin V-dependent transport of formin for actin aster compaction.

A very cool work led by @valthomas.bsky.social and nice collaboration with Andrea Picco and @kaksonen.bsky.social!

www.biorxiv.org/content/10.1...

#newPI and time is running.

It has already been a month since I officially joined the University of Warwick as Assistant Professor. I am excited to announce and build the Fluorescence and Membrane Dynamics (FMD) Lab:

warwick.ac.uk/fac/sci/med/...

The bridge-like lipid transport protein VPS13C/PARK23 mediates ER–lysosome contacts following lysosome damage Nature Cell Biology - Wang et al. show the recruitment of the lipid channel protein VPS13C and formation of VPS13C-dependent contacts between endoplasmic reticulum and lysosomes after lysosomal...

"The bridge-like lipid transport protein VPS13C/PARK23 mediates ER–lysosome contacts following lysosome damage" out now in Nature Cell Biology
rdcu.be/ehbaL

ESCRT function, evolutionary diversity and mechanism of action The ESCRTs (Endosomal Sorting Complexes Required for Transport) were discovered in 2002 and became one of the most dynamic fields of research in membrane cell biology. ESCRTs are protein complexes fo…

Abstract submissions for short talks are still opened until April 20th for the EMBO Escrt meeting 2025. There are plenty of options for short talks, please apply online at meetings.embo.org/event/25-escrt

Thats the proof, that PI to PI knowledge transfer can still work (for now😂).

Yay very happy.

Interested in how cells respond when squeezed? Check the review paper just published by Laura Faure, @valeriaventurini.bsky.social and myself on this. Really thorough and clear revision by Laura and Valeria!