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Ricardo Zayas

@zayaslab.bsky.social

I am a Professor of Biology at San Diego State University. I study how animals can regenerate the nervous system from stem cells using tiny flatworms called planarians.

95 Followers  |  144 Following  |  13 Posts  |  Joined: 16.05.2025  |  1.5024

Latest posts by zayaslab.bsky.social on Bluesky

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SoxB1-Mediated Chromatin Remodeling Promotes Sensory Neuron Differentiation in Planarians Understanding how adult stem cells generate neurons is critical for advancing regenerative medicine. However, few in vivo models enable studying how stem cell fates are specified as neurons in an adul...

We have posted the revised version of our preprint, which now also includes the reviews. Our work provides mechanistic insight into how the SoxB1 transcription factor regulates chromatin dynamics and transcriptional programs during adult neurogenesis in planarians.

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

04.12.2025 17:52 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Apply! It's a great experience and you get to meet very cool people. Let me know if you want to know more πŸ§ͺ

02.12.2025 18:02 β€” πŸ‘ 29    πŸ” 20    πŸ’¬ 0    πŸ“Œ 1
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Smed-pou4-2 regulates mechanosensory neuron regeneration and function in planarians A conserved POU4-dependent developmental program underlies mechanosensory neuron regeneration in adult planarians.

Our study on the role of the Pou4 gene in planarian neural regeneration has been published. Congratulations to the trainees and team members who led this work!

doi.org/10.7554/eLif...

20.11.2025 18:46 β€” πŸ‘ 10    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0
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Even as the anti-vax lobby erodes public trust, new evidence confirms that "immunizations against Covid-19, RSV, and influenza have shown consistent effectiveness & safety and are associated with a substantially reduced risk of hospitalization & severe disease"

www.nejm.org/doi/full/10....

29.10.2025 23:15 β€” πŸ‘ 165    πŸ” 68    πŸ’¬ 4    πŸ“Œ 6
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Sunday Assembly with Dr. Ricardo Zayas, Sun, Nov 16, 2025, 11:00 AM | Meetup **Regaining a Sense of Touch, aka Wormy Feelings** Why can some animals grow back missing body parts while we can't? What if we could rebuild parts of the nervous system af

I'll be giving a talk on the topic of regeneration at Sunday Assembly San Diego on November 16. Just wanted to share the details. I'm looking forward to the discussion! Consider joining us, either in person or virtually.

www.meetup.com/sunday-assem...
www.facebook.com/events/26440...

30.10.2025 18:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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CREATE Scholars is now accepting applications for our 2026-2027 cohort!

Please check out createscholars.sdsu.edu to access our application portal and review our program's benefits and eligibility criteria:

Application deadline: January 16, 2026, at 5:00 pm PST

30.10.2025 18:32 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Please help distribute this announcement for the Ph.D. in Biology Program @stowersinstitute.bsky.social

29.10.2025 18:14 β€” πŸ‘ 10    πŸ” 9    πŸ’¬ 0    πŸ“Œ 1
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Despite the mess, we are grateful to be funded, have exciting science happening, and have an opening for a postdoc!

If you are interested in sensory biology and esp in cilia, thermosensation, or interoception, and would like to join an interactive & supportive group - please email.

Please RT πŸ™

16.10.2025 17:29 β€” πŸ‘ 46    πŸ” 45    πŸ’¬ 0    πŸ“Œ 3
Society for Developmental Biology | Resource

Our postdoc ad is up on the SDB website! Come to Portland and study regenerative neurogenesis in planarians and zebrafish:
www.sdbonline.org/resource?Res...

05.09.2025 16:11 β€” πŸ‘ 6    πŸ” 7    πŸ’¬ 0    πŸ“Œ 0
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Overdue congratulations to Mallory Cathell, who successfully defended her doctoral dissertation back in June!

Since then, she has been hard at work preparing a manuscript based on her thesis.

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

03.09.2025 23:15 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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SoxB1-Mediated Chromatin Remodeling Promotes Sensory Neuron Differentiation in Planarians Understanding how adult stem cells generate neurons is critical for advancing regenerative medicine. However, few in vivo models enable studying how stem cell fates are specified as neurons in an adul...

Check out our new lab preprint, which provides mechanistic insights into how the SoxB1 transcription factor influences chromatin dynamics and transcriptional programs during adult neurogenesis in planarians.

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

03.09.2025 23:14 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Bummer!

08.06.2025 20:02 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Congratulations! That's great news! Good luck, Christian.

06.06.2025 22:09 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

URGENT: FlyBase has lost practically all its funding overnight; even user fees are tied up in denied grant funding. 🀬🀯

Any lab using @flybase.bsky.social please donate using the link in post below.

This incredible community, on whose backs our #Drosophila labs depend, can't be left out to dry.

03.06.2025 17:19 β€” πŸ‘ 224    πŸ” 253    πŸ’¬ 4    πŸ“Œ 19
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Website and registration will open soon for the West Coast SDB meeting, Aug 14–17 at Cal-Poly SLO! Abstract deadline for talks is July 7. Final deadline for abstracts (posters) and registration is July 31. We will have prizes for best undergrad, grad, and post doc presentations! #wcsdb2025 1/4

29.05.2025 23:18 β€” πŸ‘ 26    πŸ” 18    πŸ’¬ 1    πŸ“Œ 3
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Opinion: Why public science funding matters more than ever Not long ago, I ran into a longtime Fleet Science Center member outside our Giant Dome theater. He had just seen a film about researchers behind the publicly funded James Webb Space Telescope. With…

www.sandiegouniontribune.com/2025/05/14/o...

23.05.2025 14:57 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Forgotten classics- T. H. Morgan and planarian regeneration - the Node Morgan, T.H. (1898) Experimental studies of the regeneration of Planaria maculata. Archiv fΓΌr Entwicklungsmechanik der Organismen 7, 364-397

Interested in planarian regeneration? Here is an oldie-but-goodie article featuring comments from pioneers in the field.

thenode.biologists.com/forgotten-cl...

23.05.2025 14:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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A different view of planaria and some marine flatworms. Most images and… | Nipam Patel A different view of planaria and some marine flatworms. Most images and movies of the freshwater planarian, Schmidtea mediterranea, show them on the surface of a Petri dish and are taken from directl...

Are you interested in learning about planarians? Check out this beautiful video!

www.linkedin.com/posts/nipam-...

23.05.2025 14:51 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Smed-pou4-2 regulates mechanosensory neuron regeneration and function in planarians POU4 homologs are involved in the development of sensory cell types across diverse species, including cnidarians, ascidians, and mammals. Whether these developmental regulators are reused during adult...

A new preprint from the lab analyzing mechanisms underlying sensory neuron regeneration and function.

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

17.05.2025 21:56 β€” πŸ‘ 10    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

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