Gaëlle Letort's Avatar

Gaëlle Letort

@gaellel

Bioimage analysis and mathematical modelling, mainly in developmental biology. Research engineer @CNRS.bsky.social @pasteur.fr

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30.09.2023
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Latest posts by Gaëlle Letort @gaellel

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Appose processing hackathon with @jytinevez.bsky.social, @ctrue.bsky.social, @gaellel.bsky.social, @strigaud.bsky.social, Carlos and Thomas . Simple POC with Java calling python through Appose to flip blocks. Promising!

02.03.2026 17:19 👍 23 🔁 5 💬 0 📌 0

New preprint alert!

We developed an automated framework to optimize tracking pipelines for bacteria, along with a nice integration of tools for bacteria imaging, in the recently released TrackMate 8 (Fiji plugin).
www.biorxiv.org/content/10.6...

👇🧵

09.02.2026 16:50 👍 51 🔁 18 💬 2 📌 2
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3D assessments are necessary to determine the true, spatially resolved composition of tissues.

Standard 2D won't do.

Use CODA to switch from 2D to 3D spatial omics.

More here: www.sciencedirect.com/science/arti...

12.01.2026 16:16 👍 16 🔁 6 💬 1 📌 0
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#LivingArchitectures
We put cells and cytoskeleton filaments on the architecture of the musée d'Orsay.
www.musee-orsay.fr/fr/agenda/ev...
Scientists of the #CytoMorphoLab adapted their protocols to illustrate the questions that keep them awake at night.
-> Two shows on the 24th and 25th of January.

05.12.2025 16:11 👍 303 🔁 102 💬 19 📌 9

I was invited by @focalplane.bsky.social to write a short description about it:

focalplane.biologists.com/2025/12/12/a...

15.12.2025 08:40 👍 61 🔁 26 💬 1 📌 0
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📜We are thrilled to announce that the latest MorphoNet paper is officially published 🎉 ! Discover 5 varied use cases in which MorphoNet helps segment, curate, evaluate & validate complex 3D+t datasets, and much more 🧑‍💻 ! Read at @elife.bsky.social : doi.org/10.7554/eLif...

03.12.2025 12:28 👍 26 🔁 14 💬 1 📌 0
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Mid-career Group Leader position in AI in genomics at Institut Pasteur, Paris - Research Institut Pasteur and the CNRS are launching a call for a mid-career group leader position in AI in genomics. We are looking for an experienced researcher (typically with > 8 years of research experien...

There a is a joint call between @pasteur.fr and @cnrsbiologie.bsky.social for a mid career group leader position in AI and genomics (or molecular biology). Don't hesistate to spread the word if you know anyone relevant.

research.pasteur.fr/en/call/mid-...

27.11.2025 13:38 👍 18 🔁 30 💬 0 📌 0
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Ten years on, mixed results for the Paris Agreement

In 2015, the historic Paris Agreement, signed by 195 countries, sought to limit global warming to 2 °C. Ten years later, the results have yet to materialize, raising questions regarding the effectiveness of COP meetings, major climate gatherings whose thirtieth edition kicks off Monday in Brazil.

24.11.2025 17:08 👍 5 🔁 4 💬 0 📌 0
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📣 Register to the 13th Advances in Stem Cell Biology Course #ASCBcourse at the @pasteur.fr @pasteuredu.bsky.social. Hands-on training in different models, embryonic stem cells, iPS cells and much more on #StemCells, #organoids. 🕘June22-July03, 2026
👉 shorturl.at/PyUHi

24.11.2025 11:42 👍 3 🔁 4 💬 1 📌 0
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💥 LE FINAL de notre action « Fin de la COP30 : Jour de Colère » - à regarder jusqu’au bout 💙.

@scientifiquesenrebellion.fr et l'Orchestre du nouveau monde jouent le Dies Irae de Verdi après de 8h de lectures de textes scientifiques lors d'une action de 10h marquant les 10 ans de l'Accord de Paris.

23.11.2025 19:01 👍 149 🔁 67 💬 2 📌 4
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We just released a new major version of TrackMate (v8), the cell and organelle tracking plugin of Fiji.

It ships many new features, detailed below, but that are articulated around the following:

20.11.2025 11:42 👍 182 🔁 76 💬 4 📌 7
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"ça va c'est qu'un aller retour en avion"

Sauf que cet aller-retour en avion, c'est 2 tonnes, soit ton budget carbone annuel cible qui part en fumée. En une fois.

CHACUNE de ces cases représente 2 tonnes CO2eq. On ne respectera JAMAIS nos objectifs climatiques sans changer de système !

22.10.2025 08:21 👍 164 🔁 82 💬 12 📌 3

… or just skip straight to filling out our survey! 📋

napari.typeform.com/sustainability

21.10.2025 14:32 👍 1 🔁 2 💬 0 📌 0
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Our ForSys method to infer the mechanical state of a tissue in space and time is published now in @cp-iscience.bsky.social !
www.cell.com/iscience/ful...

(1/10)

20.10.2025 13:03 👍 20 🔁 10 💬 1 📌 0
SynapseNet is a deep learning based software tool that automates the segmentation of vesicles, mitochondria, synaptic compartments, and the active zone. This is visualized in three panels. On the left, a section of an electron tomogram with a synaptic compartment densely filled with vesicles, which appear as round structures with dark boundary and light body in the image, is shwon. The top right panel shows the segmentation result of vesicles, visualized by masks with an individual color per vesicle and outlines for the segmented compartment (red) and active zone (blue). The bottom right panels shows a 3D rendering of the segmentation with vesicles shown as yellow spheres.

SynapseNet is a deep learning based software tool that automates the segmentation of vesicles, mitochondria, synaptic compartments, and the active zone. This is visualized in three panels. On the left, a section of an electron tomogram with a synaptic compartment densely filled with vesicles, which appear as round structures with dark boundary and light body in the image, is shwon. The top right panel shows the segmentation result of vesicles, visualized by masks with an individual color per vesicle and outlines for the segmented compartment (red) and active zone (blue). The bottom right panels shows a 3D rendering of the segmentation with vesicles shown as yellow spheres.

Are you studying synapses in electron microscopy? Tired of annotating vesicles? We have the tool for you! SynapseNet implements automatic segmentation and analysis of vesicles and other synaptic structures and has now been published:
www.molbiolcell.org/doi/full/10....

17.10.2025 11:09 👍 39 🔁 13 💬 2 📌 0

Hi all. This is the recording of the online seminar I gave following the kind invitation of #GLOBIAS.

I share what we have learned delivering #BioimageAnalysis services in the IAH core facility of the @institutpasteur.bsky.social

research.pasteur.fr/en/team/imag...
⬇️

13.10.2025 08:10 👍 39 🔁 14 💬 1 📌 1
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07.10.2025 12:39 👍 2 🔁 1 💬 0 📌 0
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Image Analysis Specialist/Engineer/Coordinator, Helsinki Bioimaging Image Analysis Specialist/Engineer/Coordinator, Helsinki Bioimaging

🚀Join Helsinki BioImaging as an Image Analysis Specialist🖥️to support cross-disciplinary image analysis projects. If you love coding and are interested in working at the crossroads of computer science and biology, apply by 🗓️ November 15, 2025⤵️
jobs.helsinki.fi/job/Helsinki...
#jobopening

10.10.2025 13:58 👍 22 🔁 21 💬 1 📌 3
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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...

09.10.2025 15:27 👍 71 🔁 27 💬 3 📌 0
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Research engineer in Bioimage Analysis for the researchers of the inIdEx FORMULA Hi all We are looking for a bioimage analysis to work in an image analysis core facility in beautiful Paris. Can I ask you to share this opportunity with your networks? The position is in the Instit...

Job alert!

We are looking for a bioimage analysis to work in an image analysis core facility in beautiful Paris. Can I ask you to share this opportunity with your networks?

See also on the forum:
forum.image.sc/t/research-e...

07.10.2025 12:39 👍 62 🔁 80 💬 2 📌 8

@strigaud.bsky.social

06.10.2025 11:35 👍 1 🔁 0 💬 0 📌 0

En révolutionnant la façon dont nous voyons les animaux et par extension nous-mêmes, Jane Goodall a changé le monde.

Pionnière de l’éthologie et défenseuse inlassable de la faune sauvage, elle laisse un héritage inestimable.

Et elle inspirera des générations de petites filles.

01.10.2025 22:14 👍 237 🔁 42 💬 7 📌 0
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⚫ La célèbre primatologue britannique Jane Goodall, "ambassadrice" des chimpanzés et fervente défenseure de la cause environnementale est morte à l'âge de 91 ans, a annoncé mercredi son institut.

01.10.2025 18:38 👍 495 🔁 215 💬 15 📌 55
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Bioimage Analysis Specialist | King's College London

BioImage analysis friends - King's are recruiting for a full-time, permanent facility position! Come and work with fun microscopes and fun people (and me!) - please share! www.kcl.ac.uk/jobs/126345-...

29.09.2025 09:48 👍 63 🔁 79 💬 0 📌 0
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We uncover that the caudal splanchnic mesoderm (in green) acts as a midline anchor of the heart tube. In Vangl2 and Shroom3 mutants, its bilateral symmetry is disrupted, leading to a rotation of the heart tube and ventricle malposition.

26.09.2025 19:22 👍 3 🔁 1 💬 0 📌 0

New publication :
Despite being a core member of the PCP pathway, Vangl2 can play roles unrelated to planar polarity. This is the case during mouse heart morphogenesis.

26.09.2025 19:22 👍 19 🔁 8 💬 2 📌 0
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Biologie et mathématiques en synergie pour comprendre la construction d’un organe sensoriel Comment un organe sensoriel se construit-il au cours du développement embryonnaire ?

#ResultatScientifique🔎| Des scientifiques combinent biologie et modélisation mathématique pour révéler comment l’organe olfactif se forme chez l’embryon de poisson zèbre 🐟
✍️ Julie Batut
📕 @cp-iscience.bsky.social | buff.ly/iO4GqPA

17.09.2025 16:01 👍 7 🔁 6 💬 1 📌 1
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#HappyFluorescenceFriday!

#microscopycommunity- want to learn open source image analysis or share your knowledge to help others? We’ve got a FREE virtual workshop Nov 17-19! Now accepting workshop session applications!

Learn more & sign up: buff.ly/esGIotD

19.09.2025 16:08 👍 25 🔁 14 💬 0 📌 1

Do you want to listen to me ramble about Pasteur's Image Analysis Hub (research.pasteur.fr/en/team/imag...)?
Let's meet online next Monday. I will present how we work, and what we have learned in delivering bioimage analysis support in the past 7 years.

18.09.2025 09:26 👍 17 🔁 11 💬 0 📌 0
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Communiqué de presse : financement de la recherche publique : la communauté scientifique alerte sur un système à bout de souffle. #veilleESR, @info.gouv.fr @agencerecherche.bsky.social @cnrs.fr @franceuniversites.bsky.social @inserm.fr @inrae-france.bsky.social @enseignementsup-recherche.gouv.fr

15.09.2025 11:40 👍 21 🔁 25 💬 0 📌 0