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- W4280654574 abstract "Summary Replication stress is an endemic threat to genome stability. For reasons unknown, replication stress response factors become essential during peri-implantation development. This coincides with a stem cell potency switch from the naïve to the primed state. Using genetically matched, chimera-derived mouse naïve embryonic (mESC) and primed epiblast stem cells (mEpiSC) we found that replication stress management differs between potency states. Primed mEpiSCs rely on Atr activity to prevent replication catastrophe, minimize genomic damage, avoid apoptosis, and re-enter the cell cycle. Conversely, under replications stress, mESCs readily activate Atm regardless of Atr activity, undergo replication catastrophe, and induce apoptosis. Primed pluripotent cells therefore engage Atr to counteract replication difficulties and maintain viability, whereas cells in the naïve state are more readily cleared under the same conditions. We anticipate these divergent strategies enable pluripotent cells of different potency states to meet associated proliferative or developmental demands during early development." @default.
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- W4280654574 date "2022-05-13" @default.
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- W4280654574 title "Replication stress tolerance and management differs between naïve and primed pluripotent cells" @default.
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- W4280654574 doi "https://doi.org/10.1101/2022.05.12.491744" @default.
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