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Ricardo Zayas

@zayaslab.bsky.social
115 followers 149 following 22 posts

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. zayaslab.weebly.com

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Ricardo Zayas @zayaslab.bsky.social · 19/09/2026
I'll be giving a talk on regeneration at Sunday Assembly San Diego tomorrow, September 20. 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/13206...
meetup.com
Sunday Assembly San Diego, Sun, Sep 20, 2026, 11:00 AM | Meetup
Sunday Assembly San Diego is an inclusive, non-religious community that meets to hear thoughtful talks, connect for service projects, sing songs, and generally celebrate li
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Sonya Neal @neal-lab.bsky.social · 02/09/2026
Come be my colleague!! 🎉 We’re hiring an Assistant Professor in Developmental Biology at UCSD! If you’re doing exciting work in development or regeneration, come join us!! Please spread the word and apply! apol-recruit.ucsd.edu/JPF04591
apol-recruit.ucsd.edu
Assistant Professor of Developmental Biology
University of California, San Diego is hiring. Apply now!
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Ricardo Zayas @zayaslab.bsky.social · 28/08/2026
Congratulations to Arianna Farrar on completing her MS degree in Biology at SDSU! Her master’s project, “Elucidating Gene Regulatory Networks in Planarian Neurogenesis,” represents the culmination of her work and dedication. Congratulations, Arianna, on this superb achievement!
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Joshua Weitz @joshuasweitz.bsky.social · 25/08/2026
NSF just announced its GRFP solicitation due in October - deadline varies by field: www.nsf.gov/funding/oppo... Now for the bad news... * NSF estimates they will issue 1,500 awards, down from 2,500+ last year. * NSF removed STEM Education and Learning Research as a Major Field.
nsf.gov
NSF Graduate Research Fellowship Program (GRFP)
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Maureen Barr @barrlab.bsky.social · 25/08/2026
Multiple tenure track positions at Grinnell College (original post by Vida Praitis on LinkedIn) African Diaspora Studies Biology Chemistry Classics/Philosophy joint position Computer Science Mathematics Psychology myjobs.adp.com/grinnellcoll... lnkd.in/p/eK9dXhvk
lnkd.in
Hi All, Here is a list of tenure-track job searches at Grinnell this fall. Please check out our website and apply. It is a great place to work! African Diaspora… | Vida Praitis
Hi All, Here is a list of tenure-track job searches at Grinnell this fall. Please check out our website and apply. It is a great place to work! African Diaspora Studies  Biology   Chemistry  Classics...
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The Company of Biologists @biologists.bsky.social · 25/08/2026
@jcellsci.bsky.social is looking to recruit an enthusiastic & motivated Reviews Editor. This is an exciting opportunity for a talented scientific editor to make a significant contribution to an important journal in the field of cell biology. Apply by 3 September. www.biologists.com/about-us/wor...
biologists.com
Work for us
Explore career opportunities at The Company of Biologists. Join a team passionate about science, publishing and community support.
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Nature @nature.com · 20/08/2026
The US National Science Foundation will award about 30% fewer new research grants this fiscal year than in the last one, Nature has learnt. go.nature.com/3UcGoNW
go.nature.com
Exclusive: NSF set to issue lowest number of new grants in four decades
The US science-funding agency is withholding $1 billion of its budget so that the money can go to a special White House project.
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Alex Guseman @alexguseman.bsky.social · 21/08/2026
Come be my colleague! We are hiring a structural biologist. I have thoroughly enjoyed starting my career here and both department(s) are full of exceptional scientists. apol-recruit.ucsd.edu/JPF04589
apol-recruit.ucsd.edu
Assistant Professor in Structural Biochemistry
University of California, San Diego is hiring. Apply now!
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Allison Kann @apkann.bsky.social · 21/08/2026
A new pharynx for #FluorescenceFriday. ✨ Hofstenia miamia are able to completely regenerate their pharynx after amputation, building new muscle (🟠, transgenic line) that surrounds an internal ciliated tube (🔵, b-tubulin).
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Ricardo Zayas @zayaslab.bsky.social · 12/08/2026
How do adult tissues stay organized as they continually renew? Our new preprint shows that Eph-ephrin signaling maintains sensory neuron location and number in planarians. www.biorxiv.org/content/10.6...
biorxiv.org
Ephrin Signaling Patterns Sensory Neurons During Tissue Homeostasis in Planarians
Eph and ephrin genes encode receptor-ligand pairs that mediate contact-dependent cell signaling and are essential for nervous system development. However, less is known about the role of Ephrin signal...
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Noah Whiteman @nkwhiteman.bsky.social · 06/08/2026
I’m thrilled to share that our search for a tenure-track colleague in my *truly wonderful and collegial* Genetics, Genomics, Evolution and Development Division in the MCB Department at Berkeley @berkeleymcb.bsky.social is live! Please share this broad search widely: aprecruit.berkeley.edu/JPF05481
aprecruit.berkeley.edu
Assistant Professor -Genetics, Genomics, Evolution, and Development - Molecular and Cell Biology
University of California, Berkeley is hiring. Apply now!
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Rebecca D. Burdine, PhD @rburdine1.bsky.social · 25/07/2026
Day 2 #2026SDB #DevBiol Great talk by @hamdounlab.bsky.social on developing a more genetically favorable sea urchin. The winner is: Lytechinus pictus! (And dev bio!)
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Society for Developmental Biology @socdevbio.bsky.social · 30/06/2026
🪱✨ Join us at #2026SDB in Las Vegas to hear from Ricardo Zayas! 🎰 His lab uses freshwater planarians to study how entire organisms regenerate from tiny body fragments 🌱🧬, focusing on adult pluripotent stem cells (neoblasts) that drive tissue renewal and regeneration. 🔬 @zayaslab.bsky.social
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Genetics Society of America @genetics-gsa.bsky.social · 23/03/2026
A new study in #GENETICS from @zayaslab.bsky.social identifies the critical function of soxB1-2 in lineage specification in #planaria and offers a chromatin accessibility dataset for studying #regeneration in the species. buff.ly/nS57Kjo
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Ricardo Zayas @zayaslab.bsky.social · 23/03/2026
I'm looking forward to reading this new pre-print from the Van Wolfswinkel Lab at Yale, which fills significant gaps in understanding how systemic RNAi works in planarians. www.biorxiv.org/content/10.6...
biorxiv.org
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Oded Rechavi @odedrechavi.bsky.social · 13/03/2026
A new mechanism for “RNA memory”! This time in Planaria! (Here's a video of a Planarian with mulitple heads, one of the heritable phenotypes we studied). This work summarizes >10 years of research and is an amazing collaboration with the labs of Jochen Rink and Omri Wurtzel labs. Read thrad below👇
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Genetics Society of America @genetics-gsa.bsky.social · 03/03/2026
Three cycles. One offer declined. And finally—the right fit. In our “Landing a faculty position” series, Ben Vincent (Cal State, LA) shares candid advice on the academic job market, teaching-focused roles, and building a lab. 🔗 Read more: buff.ly/ripDccg
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Ricardo Zayas @zayaslab.bsky.social · 20/01/2026
Check out the published version of Mallory Cathell's doctoral work. SoxB1-Mediated Chromatin Remodeling Promotes Sensory Neuron Differentiation in Planarians academic.oup.com/genetics/art...
academic.oup.com
SoxB1-Mediated Chromatin Remodeling Promotes Sensory Neuron Differentiation in Planarians
Abstract. Understanding how adult stem cells generate neurons is critical for advancing regenerative medicine. However, few in vivo models enable studying
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Prakash Lab @ Miami @vprakashlab.bsky.social · 23/12/2025
🚨 POSTDOC OPENING 🚨 NIH-funded Bio-Fluid Mechanics Postdoc in my lab @univmiami.bsky.social Hofstenia miamia | cilia-driven flows | behavior & neuroscience Collab w/ Mansi Srivastava @harvard.edu 🕒 Start: Jan–Feb 2026 ⏳ 1 yr, renewable | Email me ASAP! #Postdoc #Biophysics #FluidDynamics
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James Briscoe @jamesbriscoe.bsky.social · 08/12/2025
Learn more about @dev-journal.bsky.social Pathway to Independence Programme - supporting the transition of postdocs to group leaders Catch up on where the 2022 PI fellows are now Apply to become a 2026 PI fellow journals.biologists.com/dev/article/...
journals.biologists.com
A path to success: Development's Pathway to Independence programme
ABSTRACT. For post-docs pursuing an academic career, the transition to a group leader position can be a notoriously difficult one, not least because the availability of necessary support and training ...
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Ricardo Zayas @zayaslab.bsky.social · 04/12/2025
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...
biorxiv.org
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...
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MadScientist @mads100tist.bsky.social · 02/12/2025
Apply! It's a great experience and you get to meet very cool people. Let me know if you want to know more 🧪
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Ricardo Zayas @zayaslab.bsky.social · 20/11/2025
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...
doi.org
Smed-pou4-2 regulates mechanosensory neuron regeneration and function in planarians
A conserved POU4-dependent developmental program underlies mechanosensory neuron regeneration in adult planarians.
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Madhu Pai, MD, PhD @madhupai.bsky.social · 29/10/2025
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....
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Ricardo Zayas @zayaslab.bsky.social · 30/10/2025
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
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Ricardo Zayas @zayaslab.bsky.social · 29/10/2025
Please help distribute this announcement for the Ph.D. in Biology Program @stowersinstitute.bsky.social
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Piali Sengupta @senguptalab.bsky.social · 16/10/2025
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 🙏
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Bret Pearson @sheckyfeinblatt.bsky.social · 05/09/2025
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...
sdbonline.org
Society for Developmental Biology | Resource
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Ricardo Zayas @zayaslab.bsky.social · 04/09/2025
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...
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Ricardo Zayas @zayaslab.bsky.social · 04/09/2025
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...
biorxiv.org
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...
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Mark A. Hanson @hansonmark.bsky.social · 03/06/2025
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.
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Stephanie Woo @itsthewoolab.bsky.social · 30/05/2025
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
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Ricardo Zayas @zayaslab.bsky.social · 23/05/2025
www.sandiegouniontribune.com/2025/05/14/o...
sandiegouniontribune.com
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…
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Ricardo Zayas @zayaslab.bsky.social · 23/05/2025
Interested in planarian regeneration? Here is an oldie-but-goodie article featuring comments from pioneers in the field. thenode.biologists.com/forgotten-cl...
thenode.biologists.com
Forgotten classics- T. H. Morgan and planarian regeneration - the Node
Morgan, T.H. (1898) Experimental studies of the regeneration of Planaria maculata. Archiv für Entwicklungsmechanik der Organismen 7, 364-397
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Ricardo Zayas @zayaslab.bsky.social · 23/05/2025
Are you interested in learning about planarians? Check out this beautiful video! www.linkedin.com/posts/nipam-...
linkedin.com
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...
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Ricardo Zayas @zayaslab.bsky.social · 17/05/2025
A new preprint from the lab analyzing mechanisms underlying sensory neuron regeneration and function. www.biorxiv.org/content/10.1...
biorxiv.org
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...
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