Stem Cells, Regeneration & Evolution

Thank you to all the jury members @mthomaschollier.bsky.social @chisinig.bsky.social @cedricmaurange.bsky.social @canaztekin.bsky.social Michael Schubert and Marianne Malartre

Congrats Dr Zoe Atzin Velasquillo Ramirez, we are all very proud of you !

Thank you again @canaztekin.bsky.social for your venue ! It was a great pleasure to host you !

Tomorrow !!

ATLASea : déjà 100 génomes marins séquencés ! En septembre 2025, le programme de recherche ATLASea a franchi la barre des 100 génomes marins séquencés.

#Institutionnel 🧬 | En septembre 2025, le programme de recherche ATLASea a franchi la barre des 100 génomes marins séquencés !

#PEPR #France2030

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🪱 Planarian (Schmidtea mediterranea)
✨ Planarians can regenerate a complete body from tiny fragments thanks to their amazing pluripotent stem cells (neoblasts) 🧬 A star of regeneration and stem cell biology
📸 Image by Rachel Gandee #ModelMonday #DevBio

Hello World! It took a minute, but much improved version (thank you peer review) of Joris paper is out
@genomebiolevol.bsky.social

bsky.app/profile/geno...

Your reminder that many of the muscles, nerves and bones you use to hear and talk with correspond to gill structures in fish. 🧪 #evolution #paleontology

Jane Goodall, un singe peut en cacher un autre Les travaux de la primatologue Jane Goodall ont bouleversé les sciences de la nature, non seulement en ce qui concerne nos connaissances sur les animaux et notre rapport à eux, mais elles ont aussi pe...

La plus célèbre des primatologues, Jane Goodall, vient de s'éteindre à 91 ans.

L'occasion de réécouter son interview par @natachatriou.bsky.social en 2022 pour @sciencecqfd.bsky.social

www.radiofrance.fr/francecultur...

Today is a « first day » for many of us !
1st day as a PhD student and monitor for Remi and 1st day as research director for Eve

📢 PhD Thesis defense

📅 October 8th
📍 Institut Jacques Monod

Next week, Zoé Velasquillo Ramirez @zoevel.bsky.social , ( @stemdevevo.bsky.social Lab will defend her PhD thesis "Unraveling regeneration success in Platynereis dumerilii through a single-cell RNA-seq approach"
➡️ buff.ly/eZqpSBp

« Nous misons sur de multiples interactions entre les équipes de recherche » L’Institut Jacques Monod – Unité Mixte du CNRS et de l’Université Paris Cité – est aujourd’hui l’une de

📣 "Nous misons sur de multiples interactions entre les équipes de recherche"

📃 Retrouvez l'interview de @vdoye.bsky.social, Directrice de l'
@ijmonod.bsky.social pour la Fondation Bettencourt Schueller qui présente l'institut et son mode de fonctionnement

🔗 www.fondationbs.org/magazine/sci...

Happy to share the Biodiversity Cell Atlas white paper, out today in @nature.com. We look at the possibilities, challenges, and potential impacts of molecularly mapping cells across the tree of life.
www.nature.com/articles/s41...

Plasticity of ventricle position after heart looping in heterotaxy with right isomerism The left/right position of ventricles needs to be maintained after heart looping, an unexpected step affected in heterotaxy.

New publication | Science Advances www.science.org/doi/10.1126/...

📢 Institut Jacques Monod Seminars

📅 Oct. 7th
📍 Institut Jacques Monod

Invited by the @stemdevevo.bsky.social Lab , @canaztekin.bsky.social will present an Institut Jacques Monod seminar on the theme « Signaling centers of appendage regeneration: from single cells to species »

➡️ buff.ly/Nvw4YZn

Very soon !

Day 19 - Depths. blood belly comb jelly (Ctenophora), helmet jellyfish (Cnidaria). Animals in the deep sea are some of the most beautiful, particularly the jellies with bodies like abstract portraits that move ethereally in the abyss. Here are two drawings of jellies you can find in the deep sea.

Me: *checks news*

Me, 20 minutes later: *transforms into tiny crab, floats way on jellyfish*

hoxd13a reporter in a zebrafish larva

Are digits modified fins, or evolutionary innovations? Read how we tackled this old question from a new angle🧪
A story with @chasebolt.bsky.social, @homeobox.bsky.social and myself, coordinated by @denisduboule.bsky.social from @college-de-france.fr and published in @nature.com today!
#InHoxWeTrust

Tortoise/Turtle (order Testudines): Shells of many species of turtles and tortoises are intricately marked and coloured, yet are incredibly perfectly designed by nature to blend precisely with their natural habitats. Superb photos taken by Casey Leone. Top row, from left to right:
#turtle #turtles

Two predatory tunicates that are white tubular gelatinous creatures that stretch into the water with mouths that behave similarly to what you would find with a Venus flytrap. They are on rocks and additional rocks can be seen behind them in an aquarium.

Predatory tunicates at the Monterey Bay Aquarium

#TunicateTuesday #MarineLife #Invertebrates #DeepSea #Megalodicopia #MBARI #MontereyCanyon #Photography #WestCoast

Epigenetic relay: Polycomb-directed DNA methylation in mammalian development In mammals, repression of germline-specific gene expression is essential for preserving somatic cell identity and preventing disease. Germline gene silencing is often dependent on the presence of prom...

Very excited to share an excellent review from @teresa-urli.bsky.social, published one week before her PhD defense! We did a deep dive into the fascinating biology of the variant Polycomb complex, PRC1.6 (1/5) journals.plos.org/plosgenetics...

There is always room for wonder.

Gene-Edited Pig Kidney Xenotransplants Get IND Clearance for Clinical Trials Plus updates from eGenesis CEO Mike Curtis, PhD, on the dialysis-free progress of two patients with end-stage kidney disease that received xenotransplants.

www.insideprecisionmedicine.com/topics/trans...

Felicitations Laurent !

Constraints on chromosome evolution revealed by the 229 chromosome pairs of the Atlas blue butterfly The genome of the Atlas blue butterfly contains ten times more chromosomes than most butterflies, and more than any other known diploid animal. Wright et al. show that this extraordinary karyotype is ...

How many chromosomes can an animal have?

In our paper out now in @currentbiology.bsky.social we show that the Atlas blue butterfly has 229 chromosome pairs- the highest in diploid Metazoa! These arose by rapid autosome fragmentation while sex chromosomes stayed intact.
www.cell.com/current-biol...

Flagellar gliding in choanoflagellates Freire-Delgado and Brunet discover a new mode of cell motility in choanoflagellates, the closest relatives of animals. Under mild confinement, choanoflagellate move over surfaces without cell deformat...

New short paper from our lab @currentbiology.bsky.social, in which we discover of a new mode of cell motility for choanoflagellates: flagellar gliding. www.cell.com/current-biol... - A 🧵

EvoChromo: Evolutionary approaches to research in chromatin Chromatin is the complex of DNA, RNA and protein that is found making up the chromosomes in eukaryotic cells. Chromatin is essential for proper genome function and is involved in chromosome segregati…

Please re-post:

Interested in chromatin and its evolution? Good news! There's still time to join us in beautiful Catalonia (9-12 Dec) to discuss eukaryotic, bacterial, archaeal, and viral chromatin and how it all hangs together meetings.embo.org/event/24-evo...

Abstract deadline: 30 September

More on the ancient foundation of animal development. Coyle & King illustrate how core regulatory modules were present in our pre-animal ancestors. The key was not invention, but recycling & new protein interactions. #CellBiology #multicellularity #protistsOnSky
www.nature.com/articles/s41...

This is figure 2, which shows M. ibericus queens lay males from two different species.

Living organisms are assumed to produce same-species offspring. A study in Nature reports a shift from this norm in Messor ibericus, an ant that lays individuals from two distinct species. go.nature.com/3V68MP0 🧪