I am deeply honoured to announce that I have been awarded the CNRS Bronze Medal. This would not have been possible without the incredible people and support of the "Cell Death & Epithelial Homeostasis" team @levayerr.bsky.social over the past 8 years at the Institut Pasteur (Dept. DSCB - UMR 3738).

🥉 CNRS Bronze Medal 2026 → Léo Valon Using optogenetics in vivo, he revealed that dying epithelial cells trigger pro-survival responses in neighboring cells, protecting tissue cohesion. Decoding how mechanical forces govern cell fate and survival.

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

I’m thrilled to share that I will join @gustaveroussy.fr as a Group Leader! Our objective: to understand how mechanochemical feedbacks regulate tumor dynamics and plasticity, with the overarching goal of bridging tissue mechanobiology and tumor pathophysiology using human organoids.

Wondering what to study for the next three years? Applications for the PhD programme are now open! igdr.univ-rennes.fr/en/applicati... Our team is offering two projects, one on tumour-innate immune system dialogue and the other on collective cell migration and organogenesis.

Une bouteille à la mer, Suite à ma mutation, nous vendons (entre particuliers) notre grand appartement (T4-101m²) situé à Choisy-le-Roi (Paris en 10min par le RERC). N'hésitez pas à transférer l'annonce si vous connaissez des personnes qui seraient intéressées. www.pap.fr/annonces/app... Léo

Happy New Year 2026! This year, Hadi Boukhatmi, Régis Giet and I are delighted to be organising the 36th French Droso Meeting in Brittany, from 5 to 8 October. A great line-up of speakers Mark the date in your diaries ! The meeting website containing all the details will be opening very soon.

How does signalling control cortical tension? Using optogenetics and AFM, we show that myosin recruitment and cortical tension increase proportionally with RhoA signalling. More here: www.biorxiv.org/content/10.6... Super work by Pierre Bohec with Guillaume Salbreux and @dianakhorom.bsky.social

Come join us in beautiful Roscoff for this Conference Jacques Monod on Developmental regulation: from molecular to ecological niches May 18-22, 2026 Roscoff, France Abstract deadline: January 31, 2026 Apply here: cjm.sb-roscoff.fr/en

Very happy to share video of 1st lecture @college-de-france.fr on Biological computation 😊. I defend the necessity to access Algorithmic & Computational levels of analysis in cell & developmental biol. proposed by David Marr in neuroscience. Logic & Function matter 🤩. Video: tinyurl.com/55yejk5f

Super interview dans @themeta.news sur l'effondrement des ambitions du ministère en termes de Science et Sociétés Avec @comsciconfra.bsky.social, on peut témoigner que la situation budgétaire est une véritable catastrophe pour les asso de #médiation

Starting Monday!!! If you are in Paris, feel free to drop in for this exceptional course!

1/ 🎉Excited to share our new preprint @vignjeviclab.bsky.social @davidbrueckner.bsky.social : "Self-organization of tumor heterogeneity and plasticity" biorxiv.org/content/10.1... Tumor heterogeneity and plasticity drive metastasis and relapse. How is tumor patterning coordinated? A thread👇

Happy to share the last version of our story @currentbiology.bsky.social on the role of interfacial tension in mechanical cell competition led by @leovalon.bsky.social and Alexis Matamoro Vidal www.sciencedirect.com/science/arti...