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- W4306194622 abstract "Niche-derived factors regulate tissue stem cells, but apart from the mechanosensory pathways, the effect of niche geometry is not well understood. We used organoids and bioengineered tissue culture platforms to demonstrate that the conical shape of Lgr5+ small intestinal stem cells (ISCs) facilitate their self-renewal and function. Inhibition of non-muscle myosin II (NM II)-driven apical constriction altered ISC shape and reduced niche curvature and stem cell capacity. Niche curvature is decreased in aged mice, suggesting that suboptimal interactions between old ISCs and their niche develop with age. We show that activation of NM IIC or physical restriction to young topology improves in vitro regeneration by old epithelium. We propose that the increase in lateral surface area of ISCs induced by apical constriction promotes interactions between neighboring cells, and the curved topology of the intestinal niche has evolved to maximize signaling between ISCs and neighboring cells." @default.
- W4306194622 created "2022-10-14" @default.
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- W4306194622 date "2022-10-14" @default.
- W4306194622 modified "2023-10-01" @default.
- W4306194622 title "Cellular shape reinforces niche to stem cell signaling in the small intestine" @default.
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- W4306194622 doi "https://doi.org/10.1126/sciadv.abm1847" @default.
- W4306194622 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36240269" @default.
- W4306194622 hasPublicationYear "2022" @default.