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Fibroblast growth factor 10 is a negative regulator of postnatal neurogenesis in the mouse hypothalamus.
- Source :
-
Development (09501991) . Jul2020, Vol. 147 Issue 13, p1-12. 12p. - Publication Year :
- 2020
-
Abstract
- New neurons are generated in the postnatal rodent hypothalamus, with a subset of tanycytes in the third ventricular (3V) wall serving as neural stem/progenitor cells. However, the precise stem cell niche organization, the intermediate steps and the endogenous regulators of postnatal hypothalamic neurogenesis remain elusive. Quantitative lineage-tracing in vivo revealed that conditional deletion of fibroblast growth factor 10 (Fgf10) from Fgf10-expressing ß-tanycytes at postnatal days (P)4-5 results in the generation of significantly more parenchymal cells by P28, composed mostly of ventromedial and dorsomedial neurons and some glial cells, which persist into adulthood. A closer scrutiny in vivo and ex vivo revealed that the 3V wall is not static and is amenable to cell movements. Furthermore, normally ß-tanycytes give rise to parenchymal cells via an intermediate population of a-tanycytes with transient amplifying cell characteristics. Loss of Fgf10 temporarily attenuates the amplification of ß-tanycytes but also appears to delay the exit of their a-tanycyte descendants from the germinal 3V wall. Our findings suggest that transience of cells through the a-tanycyte domain is a key feature, and Fgf10 is a negative regulator of postnatal hypothalamic neurogenesis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09501991
- Volume :
- 147
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- Development (09501991)
- Publication Type :
- Academic Journal
- Accession number :
- 144662427
- Full Text :
- https://doi.org/10.1242/dev.180950