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Choroid plexus-derived miR-204 regulates the number of quiescent neural stem cells in the adult brain

Journal Contribution - Journal Article

Regulation of adult neural stem cell (NSC) number is critical for lifelong neurogenesis. Here, we identified a post-transcriptional control mechanism, centered around the microRNA 204 (miR-204), to control the maintenance of quiescent (q)NSCs. miR-204 regulates a spectrum of transcripts involved in cell cycle regulation, neuronal migration, and differentiation in qNSCs. Importantly, inhibition of miR-204 function reduced the number of qNSCs in the subependymal zone (SEZ) by inducing pre-mature activation and differentiation of NSCs without changing their neurogenic potential. Strikingly, we identified the choroid plexus of the mouse lateral ventricle as the major source of miR-204 that is released into the cerebrospinal fluid to control number of NSCs within the SEZ. Taken together, our results describe a novel mechanism to maintain adult somatic stem cells by a niche-specific miRNA repressing activation and differentiation of stem cells.
Journal: EMBO JOURNAL
ISSN: 1460-2075
Volume: 38
Publication year:2019
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:10
CSS-citation score:1
Authors:International
Authors from:Government
Accessibility:Closed