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Jean Léon Maître

@maitrejl.bsky.social
2.8K followers 212 following 93 posts

developmental cell biophysicist searching for the forces shaping life (basically, I suck embryos into micropipettes)🇪🇺

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Reposted by Jean Léon Maître
Nature @nature.com · 15/07/2026
The idea of prosperity without growth is gaining traction among researchers. So why are many economists skeptical? go.nature.com/4aWlGHF
go.nature.com
How to end poverty and protect Earth: inside the debate tearing up economics
The idea of prosperity without growth is gaining traction among researchers. So why are many economists sceptical?
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James Briscoe @jamesbriscoe.bsky.social · 18/06/2026
As Editor of @dev-journal.bsky.social I get asked "What are you doing about your impact factor?" In our new editorial we say: Ask not what Dev can do for the impact factor. Ask what you can do for Dev's IF The IF is about how we all cite, review & assess each other's work doi.org/10.1242/dev....
doi.org
The elephant in the room: impact factor
Summary: This Editorial offers an honest look at impact factor trends in developmental biology, explains how Development serves its community, and makes the case that sustaining developmental biology ...
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Benjamin Swedlund @benswedlund.bsky.social · 18/06/2026
Beautiful piece on how field-specific journals with high ethical standards, such as Development, don’t try to « Game » the impact factor system - and practical steps to move away from this inherently flawed metric as a researcher (see Box 2)
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Gautam Dey @gautamdey.bsky.social · 09/06/2026
Science really takes a village. Thrilled to share this with my friend @dudinlab.bsky.social, and with our brilliant and fearless teams, our collaborators around the world and our mentors - in my case a special shoutout to Buzz Baum, Jan Ellenberg and @monicabettencourt.bsky.social. 1/2
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Omaya Dudin 𓂆 ¦🍉¦🦠¦🔬¦ @dudinlab.bsky.social · 09/06/2026
"Humbled to receive this recognition. This belongs as much to my team, my family, & to my home, Palestine: the people, the place, the joyful stubbornness to enjoy life." Cheers buddy @gautamdey.bsky.social Thx to my mentors @sophiemartinlab.bsky.social, @paveltomancak.bsky.social, & Pierre Gönczy.
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Jean Léon Maître @maitrejl.bsky.social · 10/06/2026
Wonderful news! Warmest congratulations to these amazing scientists for their beautiful discoveries about the evolution of cells and multicellular organisms!
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Jean Léon Maître @maitrejl.bsky.social · 09/06/2026
Merci pour votre accueil si généreux! C'était un vrai bonheur de partager notre passion pour le développement embryonnaire avec les enfants et de voir tant d'étoiles dans leurs yeux🤩!
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Reposted by Jean Léon Maître
Bardin Lab @bardinlab.bsky.social · 09/06/2026
Fantastic outreach by @maitrejl.bsky.social et al, who have brought Biology Quest (En Quête de Bio) of the @sfbd.bsky.social to Japan! Want to bring model organisms into your primary schools? See www.eqd-bio.org or contact me or @drosopachea.bsky.social . French, English and other languages!
eqd-bio.org
Streamlit
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Jean Léon Maître @maitrejl.bsky.social · 09/06/2026
That's right! EQDB made it all the way to Japan 🇯🇵! Many thanks to @laghalab.bsky.social @juliebatut.bsky.social @robinjournot.bsky.social @leopoldlab.bsky.social @clotilde-cadart.bsky.social Vincent, Emma, Miquel, Clara and Kai! Join us @sfbd.bsky.social for more outreach activities
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Jean Léon Maître @maitrejl.bsky.social · 06/05/2026
Please don't post your preprints without material and methods @biorxivpreprint.bsky.social
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Jean Léon Maître @maitrejl.bsky.social · 01/04/2026
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...
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Jean Léon Maître @maitrejl.bsky.social · 27/03/2026
Congratulations to the shortlisted candidates at section 24 of CNRS! c3n-cn.fr/2025/12/12/c...
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Jean Léon Maître @maitrejl.bsky.social · 26/03/2026
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...
carrieres.cnrs.fr
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.
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Jean Léon Maître @maitrejl.bsky.social · 09/03/2026
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 🇫🇷.
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Jean Léon Maître @maitrejl.bsky.social · 25/02/2026
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...
sncs.fr
Concours CNRS 2026
Le SNCS-FSU s'engage à publier les classements d'admissibilité des concours chercheur-euses CNRS 2026.
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Reposted by Jean Léon Maître
preLights @prelights.bsky.social · 25/02/2026
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...
prelights.biologists.com
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.
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Jean Léon Maître @maitrejl.bsky.social · 24/01/2026
Just leaving from @manuelthery.bsky.social exhibition @museeorsay.bsky.social with stars of actin and microtubules in my head 🤩 😍
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Jean Léon Maître @maitrejl.bsky.social · 18/12/2025
📣 #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...
c3n-cn.fr
Section 24 – External Competition – Coordination des instances du Comité National
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Jean Léon Maître @maitrejl.bsky.social · 05/12/2025
🤩 Tickets booked!!!
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Jean Léon Maître @maitrejl.bsky.social · 10/11/2025
Want to join a happy bunch 🥳 to organise meetings, outreach activities and other initiatives about developmental biology in France? Apply and/or vote 🗳️!
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Jean Léon Maître @maitrejl.bsky.social · 05/11/2025
Don't miss out on these opportunities to join this fantastic lab!
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Jean Léon Maître @maitrejl.bsky.social · 31/10/2025
Simply stunning 🤩
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Jean Léon Maître @maitrejl.bsky.social · 12/10/2025
On met les enfants en cage et on les électrocute pour la #FeteDeLaScience au @grandpalaisrmn.bsky.social par le @palaisdecouverte.bsky.social.
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Jean Léon Maître @maitrejl.bsky.social · 08/10/2025
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.
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Jean Léon Maître @maitrejl.bsky.social · 25/09/2025
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...
theguardian.com
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
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Campàs Lab @campaslab.bsky.social · 20/09/2025
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...
nytimes.com
Trump Says the U.S. Will Institute $100,000 Fee for Skilled Worker Visas
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Benoit Ladoux @bladoux.bsky.social · 18/09/2025
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
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Manuel Thery @manuelthery.bsky.social · 09/09/2025
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 !
pcd2025.sciencesconf.org
Paris Cytoskeleton Day 2025 - Sciencesconf.org
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paveltomancak.bsky.social @paveltomancak.bsky.social · 04/09/2025
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...
nature.com
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...
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paveltomancak.bsky.social @paveltomancak.bsky.social · 04/09/2025
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)
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Nature @nature.com · 03/09/2025
How is this possible? This ant can lay eggs of two different species, birthed by the same mother
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Thibaut Brunet @thibautbrunet.bsky.social · 22/04/2025
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!
Expansion microscopy micrograph of the choanoflagellate Choanoeca flexa, vaguely evocative of a cactus. Red = tubulin, green = actin, blue = DNASame with yellow = lipids (BODIPY)
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Institut Curie @institutcurie.bsky.social · 11/07/2025
🔬 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...
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Development @dev-journal.bsky.social · 11/07/2025
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...
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
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Frank Schnorrer @frankschnorrer.bsky.social · 10/07/2025
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/...
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Monica Bettencourt-Dias @monicabettencourt.bsky.social · 01/07/2025
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!
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Jean Léon Maître @maitrejl.bsky.social · 01/07/2025
Had a very productive day @eshre.bsky.social #eshre2025 meeting with the biomedical community! We have a very different way of thinking and questioning the embryo and a lot to learn from each other!
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Jean Léon Maître @maitrejl.bsky.social · 30/06/2025
Happy to be elected at the national committee @cnrs.fr I thank all of those who voted🙏. I promise to do my best to promote excellence in science through diversity and interdisciplinarity, transparency and discussion with the public. 📣Let me know what you would like to see improved @cnrs.fr📣
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the Node @the-node.bsky.social · 16/06/2025
On the Shape of Life: meeting report, SFBD meeting 2025 Girish Kale @girishkalephd.bsky.social wrote about his experience attending #ShapingLife3, the @sfbd.bsky.social meeting, which took place in the picturesque town of Cassis: thenode.biologists.com/on-the-shape...
thenode.biologists.com
On the Shape of Life: meeting report, SFBD meeting 2025 - the Node
Recently, I attended ‘Shaping Life 3’, the quadrennial meeting of the French Society of Developmental Biology (SFBD). The first of these meetings happened
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Jean Léon Maître @maitrejl.bsky.social · 16/06/2025
📣Join us for the DEVELOPMENTAL BIOLOGY COURSE @institutcurie.bsky.social @sorbonne-universite.fr We have fantastic speakers and registration is free! training.institut-curie.org/courses/deve... @karinayaniv.bsky.social @doetschlab.bsky.social @eileen-furlong.bsky.social @jesseveenvliet.bsky.social
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Bardin Lab @bardinlab.bsky.social · 13/06/2025
Students (Master's/PhD), do not miss this fantastic Developmental Biology course of @sorbonne-universite.fr and @institutcurie.bsky.social - It is FREE and open to international students, however, room and board + travel are not included. training.institut-curie.org/courses/deve...
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Jean Léon Maître @maitrejl.bsky.social · 15/06/2025
It's frustratingly tedious, it's imperfect but it eventually works. Democracy works, even against the most powerful men. www.lemonde.fr/en/france/ar...
lemonde.fr
Former French President Nicolas Sarkozy stripped of the Legion of Honor
The decision to revoke the country's highest distinction was expected since Sarkozy's conviction for graft. President Emmanuel Macron said he was opposed to the move.
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The New York Times @nytimes.com · 12/06/2025
Breaking News: The Harvard researcher detained after failing to declare scientific samples to U.S. customs was freed from federal custody. She still faces criminal charges.
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Russian Scientist Released After Four Months in Federal Custody
Kseniia Petrova, a Harvard researcher, still faces criminal charges for failing to declare scientific samples she was carrying in her suitcase.
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Jean Léon Maître @maitrejl.bsky.social · 10/06/2025
Thanks @currentbiology.bsky.social we need to hear the voice of honest and generous scientists like @dudinlab.bsky.social more often. Also, if you don't know about @dudinlab.bsky.social amazing science yet, go check it out immediately 🤩!
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Girish Kale @girishkalephd.bsky.social · 05/06/2025
@sfbd.bsky.social general assembly during #shapinglife3 meeting. This happened in ENGLISH!
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Omaya Dudin 𓂆 ¦🍉¦🦠¦🔬¦ @dudinlab.bsky.social · 06/06/2025
A big thanks to the @sfbd.bsky.social , @maitrejl.bsky.social & @embo.org YIP for what has been a very sunny & exciting #DevBio + beautiful hikes around #Cassis. & now everyone in there knows about #Ichthyosporea & #Expansion #Microscopy Which is a big ➕️ #ShapingLife3
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Mounia Lagha @laghalab.bsky.social · 07/06/2025
Bravo to the poster and best talk winners @sfbd.bsky.social #ShapingLife3: 3 PhD students: Romain Giromini, Étienne Poidomani and Noemi Zollo
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Mounia Lagha @laghalab.bsky.social · 07/06/2025
This @sfbd.bsky.social conference had also an #outreach event in primary schools coordinated by @maevalux.bsky.social and 11 volunteers.
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Mounia Lagha @laghalab.bsky.social · 07/06/2025
The amazing organization team of #ShapingLife3 meeting of @sfbd.bsky.social in sunny Cassis! Thanks to the great scientists for sharing their passion for embryos, and the beauty of life ! @maitrejl.bsky.social @cedricmaurange.bsky.social @maevalux.bsky.social @ibdm.bsky.social and others
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The New York Times @nytimes.com · 28/05/2025
Breaking News: A judge said the government should release Kseniia Petrova, a Russian scientist employed by Harvard University, saying U.S. customs had “no factual or legal basis” for revoking her visa.
nytimes.com
Judge Finds Government Acted Illegally in Russian Scientist Case
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