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Posts by Jean Léon Maître

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Congratulations to these excellent CNRS PIs 🤩 for their promotion (pending a lot of bureaucracy🥲)! Full details in the link
c3n-cn.fr/2025/12/12/c...

3 weeks ago 22 5 1 0
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Congratulations to the shortlisted candidates at section 24 of CNRS!
c3n-cn.fr/2025/12/12/c...

3 weeks ago 46 5 4 1
Recrutement 2026 de chercheuses et chercheurs en situation de handicap - CNRS Carrières Les candidats retenus signent un contrat d’un an, qui peut être renouvelé pour une durée n’excédant pas celle fixée initialement. Pendant cette période, ils bénéficient des mêmes conditions de travail, droits et avantages que les chercheurs stagiaires de la fonction publique.

Big change for researchers with disabilities who seek a faculty position in France. Positions are now open to any lab in the country and there are 2 positions for biology labs.
carrieres.cnrs.fr/actualites/r...

4 weeks ago 7 7 0 0

De nombreux chercheurs hors UE se retrouvent fréquemment en situation délicate car, même avec l'aide des RH des instituts de recherche, les procédures administratives sont incompréhensibles et déshumanisantes. Je ne peux qu'imaginer le cauchemar des étrangers moins bien aidés que nos chercheurs😰.

1 month ago 4 0 1 0

En tant que chercheur 👨‍🔬, je peux témoigner que la précarité administrative manufacturée par le racisme ambiant freine le travail de brillants 🌟 chercheurs étrangers qui nous font l'honneur de venir travailler en France 🇫🇷.

1 month ago 9 5 1 0
Concours CNRS 2026 Le SNCS-FSU s'engage à publier les classements d'admissibilité des concours chercheur-euses CNRS 2026.

Congratulations to the brilliant scientists shortlisted for the auditions @cnrs.fr for cell bio dev bio and evo-devo #section24!
Looking forward to hearing you in a few weeks.
Many other amazing candidates were no less deserving and we hope to see them next year.
sncs.fr/2025/12/11/c...

1 month ago 24 2 1 0
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Cooperation between cortical and cytoplasmic forces shapes planar 4-cell stage embryos - preLights How to make a 4-cell square ascidian embryo? Cytoplasmic pulling rotates centrosomes, cortical forces lock the plane.

How to make a 4-cell square ascidian embryo? Cytoplasmic pulling rotates centrosomes, cortical forces lock the plane.

Corentin Mollier & Shivani Dharmadhikari highlight a #preprint from Silvia Caballero-Mancebo & team @rdumollard.bsky.social

#preLight ⬇️
prelights.biologists.com/highlights/c...

1 month ago 8 3 0 1
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Just leaving from @manuelthery.bsky.social exhibition @museeorsay.bsky.social with stars of actin and microtubules in my head 🤩 😍

2 months ago 51 4 0 0

📣 #Job alert!
Looking to establish your own independent research in cell biology, development or evo-devo?
The @cnrs.fr is recruiting 7 scientists in that area of research.
Here are updated unofficial guidelines. Reach out to members of the committee if you have questions
c3n-cn.fr/section-24-w...

4 months ago 42 36 0 1
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🤩 Tickets booked!!!

4 months ago 8 1 1 0

Want to join a happy bunch 🥳 to organise meetings, outreach activities and other initiatives about developmental biology in France? Apply and/or vote 🗳️!

5 months ago 9 10 0 0

Don't miss out on these opportunities to join this fantastic lab!

5 months ago 4 0 1 0

Simply stunning 🤩

5 months ago 5 0 1 0

On met les enfants en cage et on les électrocute pour la #FeteDeLaScience au @grandpalaisrmn.bsky.social par le @palaisdecouverte.bsky.social.

6 months ago 6 0 1 0

Jochen was a brilliant and visionary scientist who inspired me and so many others. His creativity blew my mind more than once and his generous advice early on in my career was extremely useful. How lucky I feel to have met him.

6 months ago 11 0 0 1
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Former French president Sarkozy guilty of criminal conspiracy in Libyan campaign financing trial – Europe live Nicolas Sarkozy has been found guilty of conspiracy, but innocent of other charges, in case surrounding millions of euros in illegal campaign funding from late Libyan dictator Muammar Gaddafi

Slowly and tediously, even the rich and powerful can be taken down in functional democracies. This is the third conviction for Sarkozy (and his acolytes). This should encourage other democracies in difficult situations to keep hoping for justice to prevail.
www.theguardian.com/world/live/2...

6 months ago 117 33 0 1
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Trump Says the U.S. Will Institute $100,000 Fee for Skilled Worker Visas

I was on a H1B visa for part of my postdoc. Also when I started as Assistant Professor. Several of my postdocs where on H1Bs. This new fee will affect more academia than tech or finance companies because there is no way universities can pay that…

www.nytimes.com/2025/09/19/u...

7 months ago 13 6 1 0
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We’re organizing a conference at @ijmonod.bsky.social in Paris, January 2026, in memory of M.P. Sheetz — pioneer in cell mechanics and mechanobiology, co-discoverer of kinesin, and founder of @mbisg.bsky.social. Join us to explore his legacy.

mikeinmemoriam.sciencesconf.org

7 months ago 59 31 0 2
Paris Cytoskeleton Day 2025 - Sciencesconf.org

Which city is the best for Cytoskeleton research?
Dresden? Barcelona? Cambridge ? Noooo ... you all know its Paris, right? 😎
Registering to the annual meeting on Friday 14th of November is now open:
pcd2025.sciencesconf.org
Keynote speeches by @carter-lab.bsky.social and Verena Ruprecht !

7 months ago 38 20 2 0
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Bravo Juliane!
You can enjoy the middle and the end as well 😄

7 months ago 2 0 2 0
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Patterned invagination prevents mechanical instability during gastrulation - Nature In Drosophila, the cephalic furrow counteracts mechanical stress as the developing head and the trunk tissues meet, providing evidence for how mechanical forces influence the evolution of morphog...

We had #four interdisciplinary teams, integrating dev-bio, evolution, tissue mechanics, and biophysical modeling, all going full throttle to understand the #CF. Still, it took more than 7 years to publish two papers back-to-back (10/12)

www.nature.com/articles/s41...
www.nature.com/articles/s41...

7 months ago 41 11 1 0
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We are all super happy and proud to see our work on the function and evolution of the #cephalic #furrow published in @nature.com. Let me say a few things about the background and history of this work on the #Evolution_of_Morphogenesis (1/12)

7 months ago 348 118 16 8
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How is this possible?

This ant can lay eggs of two different species, birthed by the same mother

7 months ago 160 64 4 17
Expansion microscopy micrograph of the choanoflagellate Choanoeca flexa, vaguely evocative of a cactus. Red = tubulin, green = actin, blue = DNA

Expansion microscopy micrograph of the choanoflagellate Choanoeca flexa, vaguely evocative of a cactus. Red = tubulin, green = actin, blue = DNA

Same with yellow = lipids (BODIPY)

Same with yellow = lipids (BODIPY)

A dream come true: the first expansion microscopy images of C. flexa 🤩 Generated by Mylan & Uzuki who learned from the best (@hiralshah.bsky.social @gautamdey.bsky.social @dudinlab.bsky.social). We will learn so much from these!

1 year ago 294 58 20 9
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🔬 The next international Developmental Biology course, organized by Institut Curie with @sorbonne-universite.fr, will focus on "From stem #cells to #morphogenesis".

📅 Apply by:
• July 20 (3.5 weeks with hands-on workshop)
• Aug 31 (10 days of seminars)

🔗 training.institut-curie.org/courses/deve...

9 months ago 21 14 1 0
Human Development: Stem Cells, Models, Embryos. 7 - 9 September 2026 University of Warwick, UK. Resgiter your interest. #HumanDev26. Image credit: Susanna Narkilahti, Tampere University, Finland

Human Development: Stem Cells, Models, Embryos. 7 - 9 September 2026 University of Warwick, UK. Resgiter your interest. #HumanDev26. Image credit: Susanna Narkilahti, Tampere University, Finland

Save the Date!

Development has teamed up with the Wellcome-funded consortium the Human Developmental Biology Initiative to co-organise a meeting on #HumanDevelopment.

📅7 - 9 Sep 2026
📍University of Warwick, UK

Register your interest for #HumanDev26: www.biologists.com/meetings/dev...

9 months ago 29 13 0 3
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SARCOMERES divide! Mechanism how muscles grow while contracting - daughter sarcomeres appear everywhere. Seen live, registered on our cover. Pioneered by @clementrodier.bsky.social @friedrich-group.bsky.social Ian Estabrook @ibdm.bsky.social $ by @hfspo.bsky.social www.science.org/doi/10.1126/...

9 months ago 100 42 5 5
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Congratulations Ina! @hubrechtinstitute.bsky.social is lucky to have you!

9 months ago 2 0 0 0

Congratulations Monica (and CRG)!

9 months ago 1 0 1 0
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Happy to be the next (and 1st female) @crg.eu director. The CRG always stood out to me, for its excellence in understanding life's principles, with implications for health and biodiversity, & its collaborative, open and innovative way of doing science. Thrilled to join its amazing community in 2026!

9 months ago 413 50 40 11