Pablo J. SΓ‘ez's Avatar

Pablo J. SΓ‘ez

@pjsaez.bsky.social

Husband - Dad of 2 - Scientist πŸ‡¨πŸ‡± Chilean expat. I love to study how cells walk & talk. PI of the @cellcommlab.bsky.social #CellMigration #CellComm #calciumsignaling #organelles πŸ§ͺπŸ”¬

1,554 Followers  |  454 Following  |  211 Posts  |  Joined: 24.08.2023  |  2.0853

Latest posts by pjsaez.bsky.social on Bluesky

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Torque-based immune cell chemotaxis in complex environments Directed migration in chemical gradients is crucial to the immune response, yet how immune cells navigate complex tissues remains incompletely understood. Using in vitro migration assays and theoretic...

Hot from the #preprint

Leukocyte + #CellMigration + physics = cool

Microtubules enable torque-based steering during dendritic cell migration.

Actomyosin contractility is required for noise-modulation strategy used by neutrophils.

Full @biorxivpreprint.bsky.social www.biorxiv.org/content/10.1...

23.11.2025 14:39 β€” πŸ‘ 20    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0

Hopefully, the only problem is:
papers in my head > papers under preparation >>> papers in real life

πŸ˜‚πŸ€¦πŸ½πŸ€·πŸ½β€β™‚οΈ

21.11.2025 15:06 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Beautiful work, congrats !
We are doing a lot with the same cells/models, a lot of opened questions.

21.11.2025 14:59 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Even if "provisionally" accepted, those are the best words/news I've heard for quite a while...

Here some #blebs to "provisionally" cellebrate.
Let's see this #cell dance under the microscope.

@focalplane.bsky.social #fluorescencefriday #microscopy πŸ§ͺπŸ”¬

21.11.2025 14:55 β€” πŸ‘ 41    πŸ” 7    πŸ’¬ 3    πŸ“Œ 0

Great question! I know that paper from very close as I was there when they published it πŸ˜‚
I took some time bc I went to check the data in case I have done it, but could find it. From heart if I remember right there was an increase probably bc actin dynamics are boosted

19.11.2025 19:00 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
HFSP Webinar 2025: Research Grants | Human Frontier Science Program

Do you want to do some frontier of knowledge research? There's still time to register for the next webinar of @hfspo.bsky.social

By far one of the best agencies I've worked with for my beloved HFSP project, even if it's a bumpy road...no risk no glory...

www.hfsp.org/hfsp-events/...

19.11.2025 08:36 β€” πŸ‘ 11    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0
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elmo from sesame street is surrounded by flames and smoke ALT: elmo from sesame street is surrounded by flames and smoke

Felicidades querido JuanMa !

El Breaking lab, o el lab FLIPado (de FLIPR) serΓ‘ enorme...

15.11.2025 18:50 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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I guess it never gets old...bc we love #CellMigration

ATP has many roles: energy currency, hydrotrope, and *danger signal*

Immune cells are faster after ATP exposure, F-actin (cyan) goes to the rear for nitro boost!

www.science.org/doi/full/10....
@focalplane.bsky.social #fluorescencefriday πŸ§ͺπŸ”¬

14.11.2025 20:38 β€” πŸ‘ 53    πŸ” 10    πŸ’¬ 2    πŸ“Œ 0
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FocalPlane features... membrane trafficking recordings - FocalPlane FocalPlane features... membrane trafficking recordings - News

ICYMI - In September, we co-hosted a mini-symposium with the Membrane Trafficking webinar series. You can view the recordings of the talks from @nickader.bsky.social, @maiblab.bsky.social and MΓ³nica QuiΓ±ones-FrΓ­as, and the keynote lecture from Gillian Griffiths @griffithslab.bsky.social.

14.11.2025 14:33 β€” πŸ‘ 7    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
Screenshot of the FocalPlane Cell Biology events calendar

Screenshot of the FocalPlane Cell Biology events calendar

To help you plan your conference travel for 2026, we’ve been busy updating our #CellBiology events calendar on FocalPlane.

If we are missing your event, feel free to add it to the calendar or reach out to our Community Manager @helenzsci.bsky.social.
focalplane.biologists.com/cell-biology...

12.11.2025 14:05 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 2
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I love to see the endoplasmic reticulum (ER, cyan) hitchhiking over microtubules (MTs, orange).

Also the membrane dynamics are lovely.

It's been a while, but here we are for a late #fluorescencefriday with some #microscopy
#scicomm #scisky @cellcommlab.bsky.social focalplane.bsky.social πŸ§ͺπŸ”¬

07.11.2025 21:25 β€” πŸ‘ 60    πŸ” 11    πŸ’¬ 1    πŸ“Œ 1
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Registration is OPEN for our Spring meeting: Dynamic Cell VI

πŸ—“οΈ 21st-26th April 2026

πŸ“Reading, UK

Co-organised with @biochemsoc.bsky.social @royalmicrosoc.bsky.social and the Chinese Society for Cell Biology

Register here:

www.eventsforce.net/biochemsoc/f...

31.10.2025 10:06 β€” πŸ‘ 9    πŸ” 5    πŸ’¬ 0    πŸ“Œ 1
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Volume 138 Issue 20 | Journal of Cell Science | The Company of Biologists Journal of Cell Science publishes cutting-edge science encompassing all aspects of cell biology. It is published by The Company of Biologists, a not-for-profit organisation.

Our special issue on β€˜Cilia and Flagella’ is now out! Huge thanks to all (authors + reviewers) who contributed, and to our wonderful Guest Editors (@cilialab.bsky.social + @lottepedersen.bsky.social) for pulling it together.
Happy reading!
#cilia #flagella

journals.biologists.com/jcs/issue/13...

03.11.2025 17:32 β€” πŸ‘ 49    πŸ” 23    πŸ’¬ 1    πŸ“Œ 1
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We hire!
The CytoMorpho Lab is looking for an engineer with a background in cell and molecular biology to join our team in Paris. This is a 18-month contract position, but we're open to exploring long-term opportunities.
More details here:
cytomorpholab.com/index.php/jo...

14.10.2025 13:50 β€” πŸ‘ 82    πŸ” 73    πŸ’¬ 0    πŸ“Œ 0
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We hiring! Please share this post with your talented ECRs

We're looking for a postdoc interested in the formation and function of tertiary lymphoid structures - project funded by Wellcome

Based at @lmcb-ucl.bsky.social at University College London

Apply here:
www.jobs.ac.uk/job/DPD418/r...

21.10.2025 15:57 β€” πŸ‘ 20    πŸ” 35    πŸ’¬ 0    πŸ“Œ 0
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Lieber Institute For Brain Development - Staff Scientist I, Translational Neuroscience A little about us:The Lieber Institute for Brain Development (LIBD) was established in 2010 to plot a new course in biomedical research that would change the lives of individuals affected with develop...

We are hiring for a PhD-level Staff Scientist to join our teams in the Translational Neuroscience Division @lieberinstitute.bsky.social. This is an exciting opportunity to work at the intersection of human 🧠 neuroanatomy and molecular neuroscience

recruiting.paylocity.com/recruiting/j...

29.10.2025 16:03 β€” πŸ‘ 24    πŸ” 28    πŸ’¬ 2    πŸ“Œ 1

πŸ‘ŠπŸ½πŸ‘ŠπŸ½ = puΓ±ito puΓ±ito

29.10.2025 21:24 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Mark your calendars! The next SFB 1348 International Meeting will take place in #MΓΌnster from May 27-29, 2026, with a focus on #Mechanochemical signals at cellular interfaces. Stay tuned for more details and updates at www.uni-muenster.de/SFB1348/en/m...

27.10.2025 07:00 β€” πŸ‘ 32    πŸ” 20    πŸ’¬ 0    πŸ“Œ 3
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Kudos to @eliasbarrigalab.bsky.social for the Innovation DGZ Prize for his work on #CellMigration

A great Chilean πŸ‡¨πŸ‡± in #STEM πŸ’ͺ🏽πŸ”₯

@dgz.bsky.social #DGZ50

27.10.2025 17:26 β€” πŸ‘ 25    πŸ” 3    πŸ’¬ 2    πŸ“Œ 0
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a crowd of people with their hands on their heads ALT: a crowd of people with their hands on their heads

When your email box is so bad that every time day you are in the "my dog eat the homework" situation...
But this email is actually a dog, that actually eats the homeworks...wtf

20.10.2025 11:08 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The future of High-Content Imaging has arrived.

-> Ultra-fast 3D imaging of multi-well plates at high resolution using an air objective!

See previous posts and the new miOPM preprint for details: doi.org/10.1101/2025...

13.10.2025 00:44 β€” πŸ‘ 39    πŸ” 9    πŸ’¬ 2    πŸ“Œ 1
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a man in a hood is being hit by a blue lightning bolt . ALT: a man in a hood is being hit by a blue lightning bolt .

TrΓ¨s bien πŸ‘πŸ½

12.10.2025 16:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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New preprint from our lab! ER geometry sets the tempo of neuronal bursting via Ca²⁺ store-refillβ€”revealing selective neuronal vulnerability to ER-structure problems. Thread to follow.🧠⚑️

www.biorxiv.org/content/10.1...

#Neurodegeneration #NeuroCellBiology #Calcium #bioRxiv

09.10.2025 13:08 β€” πŸ‘ 26    πŸ” 8    πŸ’¬ 0    πŸ“Œ 0

Very cool, thanks for your answer. Fiji is always the best ;)

I meant more on how did you do the composite to make the coloured insets to displace to the right, etc. Maybe you used an available macro or something you did for yourself ?

10.10.2025 21:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Fantastic live-cell imaging and even better data visualization!
May I ask how you did it?

10.10.2025 20:04 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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🚨 My lab is hiring at all levels!

Interested in animal origins & evolutionary cell biology?

I'm recruiting a postdoc, PhD students & a research assistant to study the molecular evolution of cell adhesion using marine invertebrates + comparative genomics.

πŸ”—: clarkelab.com/join/

Please repost!

08.10.2025 17:49 β€” πŸ‘ 85    πŸ” 64    πŸ’¬ 1    πŸ“Œ 0

Ils ont mΓͺme un chanson en franΓ§ais πŸ˜‰
Pour les petits et petites @guijacquemet.bsky.social @christlet.bsky.social @agathechaigne.bsky.social

youtu.be/nvP5YKlw9-Y?...

07.10.2025 20:53 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
31 Minutos: Tiny Desk Concert
YouTube video by NPR Music 31 Minutos: Tiny Desk Concert

Do you like the @npr.org tiny desk? Try this oneπŸ‘‡πŸ½

"31 minutos" was one the most viewed shows "for kids" in Latin America.
It's the Chilean πŸ‡¨πŸ‡± version of Sesame Street with acid humour, political critic & great music played by members of actual bands!
#31minutos en #ElTiny

youtu.be/UEqTIwRrWvA?...

07.10.2025 18:44 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Epiblast Ca2+ waves propagate from the apical to basal domain. The images show selected time points from movies of E5.5 GCaMP6f embryos imaged using a ZEISS lattice light-sheet 7 microscope. Top row: An example of an epiblast wave involving a large proportion of the tissue captured by imaging a volume of the embryo at 20-s intervals. A total of 9/16 embryos showed at least one epiblast Ca2+ wave. Bottom row: Faster imaging at 5-s interval revealed that the Ca2+ wave in the epiblast can be preceded by a transient in a neighboring VE cellβ€”this was observed in 5/19 events from 9 embryos (white arrowheads).

Epiblast Ca2+ waves propagate from the apical to basal domain. The images show selected time points from movies of E5.5 GCaMP6f embryos imaged using a ZEISS lattice light-sheet 7 microscope. Top row: An example of an epiblast wave involving a large proportion of the tissue captured by imaging a volume of the embryo at 20-s intervals. A total of 9/16 embryos showed at least one epiblast Ca2+ wave. Bottom row: Faster imaging at 5-s interval revealed that the Ca2+ wave in the epiblast can be preceded by a transient in a neighboring VE cellβ€”this was observed in 5/19 events from 9 embryos (white arrowheads).

During #development, distal visceral #endoderm (DVE) cells migrate to shape A-P axis specification. @m-stower.bsky.social @srinivas-lab.bsky.social &co reveal the role of Ca2+ dynamics in this, showing that inhibition of #calcium transients causes DVE arrest @plosbiology.org πŸ§ͺ plos.io/4nHWxF4

07.10.2025 08:18 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 0    πŸ“Œ 1
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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 β€” πŸ‘ 62    πŸ” 80    πŸ’¬ 2    πŸ“Œ 8

@pjsaez is following 20 prominent accounts