Alfonso Martinez Arias
@AMartinezArias
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Born and bred in Madrid, brewed in Chicago and Cambridge. Curious about how cells build embryos #NotIntheGenes #InNumbersWeTrust
Cambridge, Barcelona
Joined April 2013
An argument on the relationship between #genes, #cells and #embryos, the role of genes in the construction of animals and the creative tension between genes and cells, twins, human nature #TheMasterBuilder #CellsRUs #NotInTheGenes
https://t.co/TOwJ1LdX6m
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🎊 Happy 2026 from #ASCBcourse! Thanks to all former participants, speakers & future applicants! 🙏 One highlight: tracking stem cell-like behaviors in chick embryos during #gastrulation 🐣 Apply now 👉 https://t.co/owrfa0SqYW 📆 June 22-July 3 @institutpasteur
#StemCells
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Finally watched The Thinking Game on a long flight. What stayed with me is how directly it addresses how hard biology is. 80-90% of experiments fail, and people who choose this path have conditioned themselves psychologically for constant failure
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An immunization against LLM AI hype https://t.co/16x0vFid5a for real discovery human neural networks honed in by millions of years of evolution are not only needed but unbeatable
nytimes.com
For centuries, nobody has known who built the Florence Baptistery. Could A.I. crack the mystery?
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Beautiful, thorough, personal in places, memoir of John Gurdon from Eddy de Robertis, disciple and friend. Å #MustRead about a generation and a time from which we have moved on but that laid the foundation for contemporary biology. https://t.co/7OolOTKqFL
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Wow! What an amazing week it was at the @IISER_BERHAMPUR for my first ever Indian Society of Developmental Biology (@InSDB_79) meeting. Got to meet so many people! Gratitude to Prof Raj and his team for such a wonderful experience!
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🧬 El momento más importante de tu vida no fue tu nacimiento: fue la gastrulación, 14 días después de la fecundación. @searavalero 🔗 https://t.co/hERwYKY8Up via @rtve
rtve.es
Martínez Arias ha explicado en Radio 5 como han desarrollado este modelo de gastrulación a partir de células madre de mono
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2025 was an incredibly successful year for the Fraticelli Lab! We loved celebrating it together during our xmas day—especially with some wonderful new faces joining us.🥰 We’re excited for what 2026 will bring and wish everyone happy holidays! 🎄🎅💫
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Thanks for the shout out! Dev bio in India is really thriving well & really high quality work is being done in many labs across India! Glad this is being taken note of & gaining some limelight! @biopatrika @InSDB_79 #devbio #development @SocDevBio
I’m attending the wonderful @InSDB_79 @intlsocdiff joint meeting in Berhampur, India 🇮🇳. Developmental biology is thriving in India.
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💯💯💯
I’m attending the wonderful @InSDB_79 @intlsocdiff joint meeting in Berhampur, India 🇮🇳. Developmental biology is thriving in India.
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Lovely little pre-Christmas present to see this out @NatureCellBio ! Some 🔥 new results in here since the biorvix incl (1) a new RARE-GFP reporter ✳️🙌, (2) additional NMP quantification 🔢, (3) no neural tube patterning on RA inhibition 🙅 etc. Enjoy! 😍
nature.com
Nature Cell Biology - Makwana, Tilley et al. generate human stem cell-based trunk-like structures approximating Carnegie stage 13–14 of development. They use them to model and study the...
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2/2 This work completes a framework to think about mammalian gastrulation as a modular system with GRNs Eomes and TbxT driven) that spin our a sequence of cell fates under the control of Nodal and Wnt signalling
biorxiv.org
Nodal and Wnt signalling play an important role in the emergence of the mammalian body plan, primarily by orchestrating gastrulation. While the literature suggests they cooperate to build the...
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1/2 Using #gastruloids @AnitaBanerjee19 Ram Sambasivan group find that Retinoic Acid gates the response of the epiblast to the Nodal:Eomes, Wnt:TbxT modules during mouse #gastrulation promoting the regionalization of the #PrimitiveStreak
https://t.co/pTgHEiYkDC
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At InSDB-SD2026 in IISER Berhampur Great Day 2 morning session with a highlight from @InamdarManeesha. on the use of #SCbEM in the study of #HumanReproduction within the CReATE initiative @DBT_inStem Using #Gastruloids for human health
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It's a pleasure to be here with such a thriving community of young developmental biologists #GoIndia
We were honoured to host an illuminating lecture by Prof. Alfonso Martinez Arias (@AMartinezArias), @UPFBarcelona and @icreacommunity, on the intricacies and significance of gastrulation. Insightful and inspiring masterclass into how gastruloids can open new experimental
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@AMartinezArias gave a fascinating opening talk on Day 2 of InSDB - ISD 2026 on gastrulation at IISER Berhampur! A crash course in gastrulation as he called it :) Great set of talks & exciting science lined up for the day! @biopatrika
#InSDBISD2026
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Científicos chinos y de la UPF han desarrollado un modelo de gastrulación en primates. Servirá para estudiar el origen de enfermedades y los efectos del ambiente y fármacos en el desarrollo embrionario humano. Hemos hablado con @AMartinezArias, autor del estudio.
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@davidasinclair Would be perhaps useful to point out that neural organoids are not miniature brains and that they model fetal stages of parts of the human brain during development (rather than aging or rejuvenation). At these stages, especially in cortical organoids, neural activity is largely
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