Sox5 controls the establishment of quiescence in neural stem cells during postnatal development.

ABSTRACT: Adult stem cell niches relays in the acquisition of a reversible state of quiescence to ensure long-lasting DNA integrity and cell expansion. Neural stem cells (NSCs) in the dentate gyrus (DG) enter quiescence before the adult hippocampal neurogenic niche is fully established. However, the mechanisms controlling NSC first quiescence entry and quiescence deepness are largely unknown. Using conditional mutant mouse during embryonic or postnatal stages, we have determined that transcription factor Sox5 is required to restrict first entry in quiescence. Moreover, we have found a critical window during the second postnatal week when NSCs build up a shallow quiescent state. Loss of Sox5 leads to an excess of NSCs in shallow quiescence, which are prone to activate, leading to a neurogenic burst i

SUBMITTER: Medina-Menendez C 

PROVIDER: S-EPMC12321142 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature