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Sébastien Gauvrit

@sebgauvrit.bsky.social
1.3K followers 1.4K following 46 posts

Studying Vascular morphogenesis using Zebrafish|Mouse. Assistant Professor in the APP Department, College of Medicine, University of Saskatchewan #USask. Alumni #Stainierlab MPI and Collège de France. 🇫🇷 in 🇨🇦. sebgzlab.github.io/LabWebsite

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Reposted by Sébastien Gauvrit
Virginie Uhlmann @virginieuhlmann.bsky.social · 5h
Are you a biologist working with microscopy images? A computer scientist wanting to work with microscopy data? Their boss??? None of these, but curious how AI has transformed microscopy image analysis? 🔬🤖 This one's for you: 📄 doi.org/10.1146/annu... More in the thread! 🧵
doi.org
From Pixels to Discovery: Microscopy Image Analysis in the Age of Artificial Intelligence
Modern microscopy generates data volumes that far exceed human analytical capacity. Over the past decade, artificial intelligence (AI) has transformed microscopy image analysis into an engine for quan...
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Baptiste Lacoste @blacoste.bsky.social · 30/09/2026
🚨 Excited to share that our new paper is published today in Neuron ! We show that P2Y2 receptor activation restores cerebrovascular function and reverses behavioural impairments in mice carrying a 16p11.2 deletion. #Autism #Publication #BasicScience www.cell.com/neuron/fullt...
cell.com
Purinergic receptor activation rectifies autism-associated endothelial dysfunction
Ouellette et al. report that a 16p11.2 deletion induces a bioenergetic failure in brain endothelial cells. Activation of purinergic signaling via P2Y2 receptors restored endothelial function and impro...
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Ian Scott @icscott.bsky.social · 29/09/2026
Exciting opportunities at a world-class institute in Toronto! apply.interfolio.com/192324
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Reposted by Sébastien Gauvrit
c0nc0rdance @c0nc0rdance.bsky.social · 27/09/2026
I'll save you the click-through: A lab at University of Copenhagen had been feeding draft manuscripts & data into "Claude Science" & then Anthropic announces a discovery that this lab made a year ago but hasn't published yet. It's plausible that Claude found the same signatures independently...
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Daniel MacPhee 🇨🇦 @d-macphee.bsky.social · 24/09/2026
Check out the WCVM: Sept 25-26 “The two-day event opens up the veterinary college to the public to showcase the veterinary profession and to highlight the many roles of veterinarians in animal health, public health, research, industry and community service.” #Saskatoon wcvm.usask.ca/education/ve...
wcvm.usask.ca
Vetavision 2026 - Western College of Veterinary Medicine
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Christophe 🔬 Leterrier @christlet.bsky.social · 19/09/2026
Here's a way to get a pure science shot on Bluesky: a custom feed that only shows the posts from people you follow that are linked to a DOI bsky.app/profile/pape...
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Reposted by Sébastien Gauvrit
Jeremy Reiter @reitergroup.bsky.social · 18/09/2026
What in the world am I looking at here? @Nikon? www.nikonsmallworld.com/galleries/20...
nikonsmallworld.com
Abnormal beating of airway cilia from a child with Primary Ciliary Dyskinesia (PCD) | 2026 Small World in Motion Competition
Ning Xu - Abnormal beating of airway cilia from a child with Primary Ciliary Dyskinesia (PCD), a genetic disorder affecting respiratory function.
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MwahahahahahadScientist @mads100tist.bsky.social · 17/09/2026
You know what's also interactive? Reading the paper. Talk to your colleagues about the paper you just read. Tell them why you loved it. Tell them why you hated it. And even better: invite the authors to talk about their paper 🧪
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Rubén Marín-Juez @rmarinjuez.bsky.social · 27/08/2026
🚨Thrilled to share our latest work is out!🚨 Ever wondered how epicardial activation regulates the immune response during cardiac regeneration? Yes? Check it out. No? Check it out anyway. 😉 Huge congrats to @gurrr.bsky.social and @gulsumkayman.bsky.social ! 🔗 link.springer.com/article/10.1...
link.springer.com
Sulf1 regulates inflammation via modulation of TGF-β dependent epicardial activation - EMBO Reports
Unlike adult humans, zebrafish can regenerate their hearts after injury. After cardiac injury, the epicardium is rapidly activated to contribute both signaling factors and progenitor cells that are es...
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Reposted by Sébastien Gauvrit
Cell Culture and Lab Assistant (Free iOS App) @labassistant.bsky.social · 25/08/2026
This is the update I was most excited to release so far. This week, Cell Culture and Lab Assistant (free iOS App) gets a new update: Sequences (Beta) 🧬 It is a beta, so some things might not work as intended yet. They will be fixed. 😅 The update will be live this week.
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Reposted by Sébastien Gauvrit
Kate Cavanaugh @katecavanaugh.bsky.social · 25/08/2026
🧵 What if one reason fertility declines with age isn’t just genetic-but mechanical? Thrilled to share our new paper in @NatureCellBio : Elevated contractility drives implantation failure in mouse embryos from aged females… here’s what we found 👇 www.nature.com/articles/s41... 1/11
nature.com
Elevated contractility drives implantation failure in mouse embryos from aged females - Nature Cell Biology
Cavanaugh et al. show that embryos from aged mice have increased contractility and tissue viscosity on embryonic day 4.5, which leads to poor spreading and attachment. Similar age-associated mechanica...
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Sébastien Gauvrit @sebgauvrit.bsky.social · 25/08/2026
Really cool tools! Tracing the origins of de novo coronary collateral formation in cardiac repair www.science.org/doi/full/10....
science.org
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Rebecca D. Burdine, PhD @rburdine1.bsky.social · 25/08/2026
This is bonkers.
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Baptiste Lacoste @blacoste.bsky.social · 24/08/2026
🚨 Want to isolate astrocytes and study their function? With Nicole Blakeley, PhD Candidate in our lab, we are happy to present a new protocol, which hopefully will help labs dive into glial biology with less hurdles. Cheers ! #glia #astrocytes
cell.com
Protocol for assessing molecular signatures and metabolic function of primary murine cortical astrocytes
Astrocytes are the most numerous brain cells and are central to the regulation of brain metabolism. Here, we present a protocol for identifying molecular signatures and assessing the metabolic functio...
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MwahahahahahadScientist @mads100tist.bsky.social · 21/08/2026
For the zebrafish folks, in case you don't know: if you use it -which you do-, you can cite ZFIN as Bradford et al 2022 academic.oup.com/genetics/art... 🧪🐟
academic.oup.com
Zebrafish information network, the knowledgebase for Danio rerio research
Abstract. The Zebrafish Information Network (zfin.org) is the central repository for Danio rerio genetic and genomic data. The Zebrafish Information Networ
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Kaska Koltowska @lymphaticslab.bsky.social · 20/08/2026
Proud to share our new paper in EMBO Reports! 🧬 How does a cell "decide" to become lymphatic vs blood endothelium? Turns out it's not just which genes switch on — it's how the genome folds around them. 💥 link.springer.com/content/pdf/... #Lymphatics #Zebrafish #DevBio #VascularBiology #Genomics
The topologically associating domains (TADs) and chromatin accessibility of lymphatic endothelial cells diverge from those of blood endothelial cells. These differences underlie the activation of LEC-specific regulatory networks governing cell identity and involving genes linked to lymphatic disease.
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John P. Friel, Ph.D. @friel.bsky.social · 14/08/2026
Wake up babe! A new online resource for fish nerds just dropped. 🐟🧪 www.floridamuseum.ufl.edu/discover-fis...
floridamuseum.ufl.edu
Fish Families of the World Gallery
This searchable gallery includes entries for fish families of the world, which may include photographs of preserved specimens, reconstructed CT and photogrammetry 3D models, xrays, characteristics for...
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Reposted by Sébastien Gauvrit
Dr. Cate Peña @cate-cholamine.bsky.social · 07/08/2026
So proud to have “Early-life stress alters H3K4me1 in VTA to prime stress sensitivity” out now in Neuron! This work spanned Many years and Many people contributed. Huge thanks to @hyejaykim.bsky.social, @ja-balouek.bsky.social, Luke Geiger, and Meaghan Creed www.cell.com/neuron/fullt...
cell.com
Early-life stress alters H3K4me1 in VTA to prime stress sensitivity
Kim, Geiger et al. report that early-life stress increases the chromatin modification H3K4me1 and its enzymatic writer, SETD7, in the ventral tegmental area. They show that this form of epigenetic pri...
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Baptiste Lacoste @blacoste.bsky.social · 21/07/2026
🚨 Now available on Nature Careers ! #Recruitment #Ottawa
nature.com
Tier 2 Canada Research Chair in Vascular Links to Neurodevelopment - Ottawa, Ontario (CA) job with University of Ottawa, Ontario CANADA | 12861923
uOttawa, in partnership with the OHRI, invites applications for a Tier 2 CRC in Vascular Links to Neurodevelopment and their impact on brain health.
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Stephan Huveneers @huveneerslab.bsky.social · 24/06/2026
We are hiring! Are you an ambitious postdoc with a background in vascular bioengineering and cell biology? Then please join our team at Amsterdam UMC and help unravel the mechanisms that govern vascular integrity. #embobuildnetworks #vascularbiology #EVBO werkenbij.amsterdamumc.org/en/vacatures...
werkenbij.amsterdamumc.org
Vacatures - Postdoc Vascular Biology - Amsterdam UMC
Are you an ambitious scientist with a background in vascular bioengineering and cell biology? Join our team at Amsterdam UMC and help unravel the mechanisms that govern vascular integrity.
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Reposted by Sébastien Gauvrit
Carolyn Bertozzi @carolynbertozzi.bskyverified.social · 23/06/2026
“The whole point of AI tools is that I no longer need to retain information in my biological memory. My biological memory is for other things now. Important things. Like my Netflix password” 😂 inpreparation.substack.com/p/opinion-i-...
inpreparation.substack.com
Opinion: I Was Not Allowed To Type Prompts Into ChatGPT During My Chalk Talk And This Is Discrimination
By Dr. Rachel Simmons, Postdoctoral Fellow, Stanford University
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Sébastien Gauvrit @sebgauvrit.bsky.social · 15/06/2026
Registration and Abstract submission for the 2026 Canadian Lipid and Vascular Summit (Edmonton Chapter) is open! clvsummit.ca
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Total Internal Reflection🇬🇧🇺🇸🇺🇦 @tirscienceblog.bsky.social · 07/06/2026
The #ThermoFisher #antibody scandal is an ugly reminder, I think, of how few people (including those at TF, it seems) are trained to properly validate antibodies before use. Some advice on antibody validation in the posting 👇 totalinternalreflectionblog.com/2022/09/18/h...
totalinternalreflectionblog.com
Hitting the target (a short guide to validating antibody specificity)
Antibodies are essential and ubiquitous tools in biology, but their unguarded usage can easily lead to error. Here’s how to validate their specificity, and ensure that they’re hitting the rig…
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Reposted by Sébastien Gauvrit
Leon Smyth @leonsmyth.bsky.social · 31/05/2026
Beautiful paper from Andrew Yang’s group. A whole suite of new tools for studying brain waste clearance. A few take home points: www.cell.com/cell/fulltex...
cell.com
Physiological brain clearance architecture revealed by neuronal protein tracing
Neuronal protein tracing, unlike CSF tracers, reveals that brain clearance follows a “nearest exit” principle through distinct border immune niches disrupted differently by disease.
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Cell Culture and Lab Assistant (Free iOS App) @labassistant.bsky.social · 14/05/2026
Hi everyone! I am a PhD student in virology and I built a completely free iOS app in my free time. Please try it, any feedback is welcome! A repost would help more scientists see it. 📱 apps.apple.com/us/app/cell-... #Biology #PhD #AcademicSky #scicomm #virology #LabLife
apps.apple.com
Cell Culture and Lab Assistant App - App Store
Download Cell Culture and Lab Assistant by Umut Tank on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Cell Culture and Lab…
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Sébastien Gauvrit @sebgauvrit.bsky.social · 29/05/2026
If you are looking for a useful free app for your lab, check this apps.apple.com/us/app/cell-... Developed by Umut Tank, a PhD student in Germany as a fun side project!
apps.apple.com
Cell Culture and Lab Assistant App - App Store
Download Cell Culture and Lab Assistant by Umut Tank on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Cell Culture and Lab…
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Mélanie Laurin @melanielaurin.bsky.social · 22/05/2026
SAVE THE DATE for the 13th Canadian Developmental Biology Conference — March 7–10, 2027 — bringing together researchers, trainees, and innovators in developmental biology from across Canada and beyond.
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Jesse Engreitz @jengreitz.bsky.social · 14/05/2026
Why do guinea pigs have so many natural bypass arteries — and mice and humans almost none? We develop in vivo Perturb-seq for endothelial cells to ask how protective collateral arteries are built. Preprint with by Irene Fan, Ronghao Zhou, and Kristy Red-Horse: www.biorxiv.org/content/10.6...
A Perturb-seq screen guided by species divergence uncovers pathways for collateral artery formation
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Axel Montagne @axelmontagne.bsky.social · 13/05/2026
🚨 New preprint on bioRxiv! Pericyte loss triggers hypoperfusion, BBB dysfunction, endothelial VCAM-1/type I IFN activation, venular-like transitions & delayed white matter injury linked to human SVD signatures. Congrats Dr. Dorota Stefancova & team! www.biorxiv.org/content/10.6...
biorxiv.org
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Rubén Marín-Juez @rmarinjuez.bsky.social · 07/05/2026
🚨WE ARE HIRING🚨 Interested in regeneration? cardiac development? just like doing zebrafish research? Join us in beautiful Montreal! Check here if interested www.izfs.org/jobboard/ame... @zebrafishrock.bsky.social @isrbio.bsky.social @izfs.bsky.social
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Sébastien Gauvrit @sebgauvrit.bsky.social · 07/05/2026
media.tenor.com
a man holding a briefcase in front of a large building with the words pas mal non c'est francais
ALT: a man holding a briefcase in front of a large building with the words pas mal non c'est francais
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Hao Yin @haoyin.bsky.social · 07/05/2026
Transient Toxicity of Tamoxifen-inducible CAGG-CreER "ubiquitous CreER activation in postnatal🐭 ⏬body growth & ⏬ retinal angiogenesis" P2/4 Tmx P7 Angiogenesis⏬ 👉3-fold⏫apoptosis 👉40%⏬prolif 👉3-fold⏫P21 in Endothelial cell P21 Recovered #Angiogenesis 2026 link.springer.com/article/10.1...
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Duaa Eldeib @deldeib.bsky.social · 06/05/2026
This was a hard story to report. Newborns who don’t get a vitamin K shot are 81 times more likely to develop a condition where they bleed uncontrollably. But more and more families are declining the shot. And babies are dying. www.propublica.org/article/more...
propublica.org
Babies Are Bleeding to Death as Parents Reject a Vitamin Shot Given at Birth
A lifesaving injection given at birth to prevent severe bleeding has become collateral damage of the anti-vaccine movement.
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MwahahahahahadScientist @mads100tist.bsky.social · 06/05/2026
Authors and Reviewers in the genAI era
The Thing meme, showing the scene where Russell's character says "Nobody trusts anybody now. And we're all very tired"
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James Gagnon @james-gagnon.bsky.social · 28/04/2026
Using light-activated CRISPR in zebrafish, we triggered synchronized DNA breaks and track the repair process. ⚡🐟⚡ 

 Well ... DNA repair is very different in embryos compared to tissue culture cells. Embryos repair DNA breaks incredibly fast - within minutes! www.biorxiv.org/content/10.6...
A cartoon showing how a caged guide RNA poises CRISPR cleavage until release by light. Below, a cartoon of injection of "light-activated CRISPR" into the embryo, followed by activation.
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Joey Ghersi @joeyghersi.bsky.social · 27/04/2026
The program for the 4th Canadian Zebrafish Research Conference is now available. 📅 May 15, 2026 📍 CHU Sainte-Justine, Montreal We are excited to highlight our three Postdoc Rising Stars and to have the privilege of welcoming three invited speakers. @izfs.bsky.social @zebrafishrock.bsky.social
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Arica Beisaw @abeisaw.bsky.social · 24/04/2026
We are searching for a research technician to join our lab for a year 🔬🧬🐟 Please see the ad below and spread the word!! #ZebrafishRock
Job advertisement for a research technician position in the Beisaw lab
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Vermot Lab @vermotlab.bsky.social · 27/04/2026
🚨 How do mechanical forces shape a developing organ? Our new #ScienceAdvances @science.org study, led by the amazing @cvagenapantoula.bsky.social, reveals a Piezo1-driven hydraulic mechanism, where mechanical cues control cell volume to guide cardiac formation ❤️🐟 🔗 www.science.org/doi/10.1126/...
science.org
Piezo1-mediated mechanohydraulic control of cell volume drives cardiac morphogenesis
Mechanical forces shape the developing heart by controlling cell volume through a Piezo1-driven hydraulic mechanism.
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Asher HELLbein @asherelbein.bsky.social · 23/04/2026
This is wild: the authors find evidence for giant, macro-predatory octopuses in Late Cretaceous oceans that might max out at *62 feet long,* comfortably large enough to attack, kill and eat mosasaurs
science.org
Earliest octopuses were giant top predators in Cretaceous oceans
Top predators drive changes in ecosystem structure. For the last ~370 million years, large-sized vertebrates have dominated the apex of the marine food chain, while invertebrates have served as smalle...
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Deepa Rajan, PhD @deeparajan.bsky.social · 23/04/2026
How can a single cell learn without a brain? We explore this in my paper with @wallaceucsf.bsky.social! We discovered that single cells may learn using molecules similar to those that animal brains use to learn, like CaMKII. Cells can also propagate memory states to their progeny!
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Stephan Huveneers @huveneerslab.bsky.social · 21/04/2026
For those interested in endothelial junctions: our latest paper is out in iScience, and it includes a mass spectrometry based VE-cadherin interactome! Turns out that there are many more molecular intractions going on than just with the catenins… See: www.sciencedirect.com/science/arti...
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Ignacio GHOULlup-Diaz @igallupd.bsky.social · 19/04/2026
"Pancreatic cancer mRNA vaccine shows lasting results in an early trial: Scientists caution that more research is needed, but nearly all of the patients who responded to the personalized vaccine are still alive six years later."
nbcnews.com
Pancreatic cancer mRNA vaccine shows lasting results in an early trial
Scientists caution that more research is needed, but nearly all of the patients who responded to the personalized vaccine are still alive six years later.
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Zebrafish Rock! @zebrafishrock.bsky.social · 08/04/2026
These should be fintastic! (And did they mention, it's FREE to anyone*) #ZebrafishMeeting *As long as you register 😉 🧪
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Ran Blekhman @blekhman.bsky.social · 14/01/2025
Yes, they can hallucinate papers that don't exist, discuss results that seem to be imaginary, and can be confusing and inconsistent. But talking to tenured professors may still be helpful
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Ran Blekhman @blekhman.bsky.social · 05/04/2026
I wrote about why every lab should have AI use guidelines, and how to do it. open.substack.com/pub/blekhman...
open.substack.com
You need to make AI guidelines for your lab
Here's why you should, and how to start
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Natasha O'Brown @natashaobrown.bsky.social · 20/03/2026
@tcpotts.bsky.social paper is live. Happy to share #FishNAP, a new, non-invasive way to measure #BBB permeability in 96-well format with #zebrafish www.biorxiv.org/content/10.6...
biorxiv.org
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Zebrafish Disease Models Society (ZDMS) @zdmsociety.bsky.social · 19/03/2026
Hello, Bluesky community! ZDMS promotes the study, research & use of zebrafish disease models throughout the world while fostering diversity among the zebrafish community. We also advocate for public awareness of the importance of the field & offer informed opinions. Give us a follow, for more! 🐟👩‍🔬
Logo for the Zebrafish Disease Models Society (ZDMS). There's two silhouettes of fish that are swimming (one blue, one black)
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Julia Angwin @juliaangwin.com · 11/03/2026
I'm suing Grammarly over its paid AI feature that presented editing suggestions as if they came from me - and many other writers and journalists - without consent. State law requires consent before someone's name can be used for commercial purposes. www.wired.com/story/gramma...
wired.com
Grammarly Is Facing a Class Action Lawsuit Over Its AI ‘Expert Review’ Feature
The feature, which Grammarly shut down Wednesday, presented editing suggestions as if they came from established authors and academics—without their consent.
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Rubén Marín-Juez @rmarinjuez.bsky.social · 04/03/2026
Excited to share our latest work on cardiac regeneration! 🚨 Here @gulsumkayman.bsky.social identified Fibulin2 as a critical matricellular protein regulating the balance between regeneration and fibrosis. 🐟🫀 1/2 www.nature.com/articles/s44...
nature.com
Attenuation of epicardial activation and myofibroblast abundance via the Fbln2–Nupr1b axis stimulates cardiac regeneration in zebrafish - Nature Cardiovascular Research
Kayman Kürekçi et al. show that fibulin-2 regulates epicardial cell activation through nuclear protein 1b signaling to balance fibrosis and regeneration after cardiac injury, and modulating this pathw...
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