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- W4292343337 abstract "Regulation of chromatin accessibility is critical for cell fate decisions. Chromatin structure responds to extrinsic environments rapidly. The traditional adult stem cell isolation approach requires tissue dissociation, which triggers stem cell activation and leads to alterations in chromatin structure. To preserve the in vivo chromatin states, we utilized the PFA-perfusion-based isolation approach and characterized the DNA regulatory landscapes during muscle stem cell quiescence exit and aging. We showed that aged SCs display a chronically activated chromatin signature. Detailed analysis of the chromatin accessibility profiles identified key enhancer elements for SC quiescence. Constant activation of the enhancer elements promotes stemness and prevents SCs from differentiation, whereas genetic deletion causes cell-cycle arrest and leads to defects in activation. Our comprehensive characterization of the chromatin accessibility and transcriptomic landscapes in SC quiescence and aging broadens our understanding of these processes and identifies key distal regulatory elements for SC function." @default.
- W4292343337 created "2022-08-19" @default.
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- W4292343337 date "2022-09-01" @default.
- W4292343337 modified "2023-10-16" @default.
- W4292343337 title "Global chromatin accessibility profiling analysis reveals a chronic activation state in aged muscle stem cells" @default.
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- W4292343337 doi "https://doi.org/10.1016/j.isci.2022.104954" @default.
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