Vinay Ayyappan
vayyappan.bsky.social
Vinay Ayyappan
@vayyappan.bsky.social
Penn MD/PhD student.
Runner when bones work
Pinned
[0/8] Stoked to share our work with @arjunraj.bsky.social on tissue organization in the gastruloid. We use lineage tracing and spatial transcriptomics to show that diversity among stem cell clones promotes, rather than hinders, gastruloid development: www.biorxiv.org/content/10.1...
Gastruloid patterning reflects division of labor among biased stem cell clones
Embryonic development typically requires precise coordination among cells to achieve reproducible outcomes, leading to the assumption that cellular heterogeneity must be minimized or buffered against....
www.biorxiv.org
Reposted by Vinay Ayyappan
See this? This = implanting mouse embryo. Usually this happens inside its mother and is invisible to us, but we can actually watch implantation ex vivo with the hope of understanding why implantation goes awry in embryos of older women. A 🧵...
October 1, 2025 at 6:21 PM
Reposted by Vinay Ayyappan
In this intriguing paper published from the lab of @amartinezarias.bsky.social , they looked at the effects of size on morphology, tissue composition, and gene expression of gastruloid development. They found that AP elongation dynamics is size-dependent! Check it out here:
doi.org/10.1016/j.cd...
September 26, 2025 at 5:17 PM
Reposted by Vinay Ayyappan
Aria Huang's @azyhuang.bsky.social paper is out on beautiful embryonic kidney 3D cultures that branch properly and enable live defect analysis. She also finds intriguing effects of adhesion and stiffness on explant size, shape, and nephron formation - boundary conditions matter!

rdcu.be/eBSUK
August 22, 2025 at 3:46 PM
[0/8] Stoked to share our work with @arjunraj.bsky.social on tissue organization in the gastruloid. We use lineage tracing and spatial transcriptomics to show that diversity among stem cell clones promotes, rather than hinders, gastruloid development: www.biorxiv.org/content/10.1...
Gastruloid patterning reflects division of labor among biased stem cell clones
Embryonic development typically requires precise coordination among cells to achieve reproducible outcomes, leading to the assumption that cellular heterogeneity must be minimized or buffered against....
www.biorxiv.org
July 15, 2025 at 3:44 PM
Reposted by Vinay Ayyappan
Excellent work indeed, but I feel in this context @adrianobolondi.bsky.social fantastic work should also be mentioned www.cell.com/developmenta...
July 15, 2025 at 1:58 PM
Reposted by Vinay Ayyappan
Two new preprints from the @arjunraj.bsky.social‬ on #gastruloids. Both excellent. Exploring the relationship between macroscopic reproducibility v microscopic heterogeneity. Stunning experiments and much to think about
biorxiv.org/content/earl...
biorxiv.org/content/earl...
July 15, 2025 at 1:28 PM