Mossy Cells Control Adult Neural Stem Cell Quiescence and Maintenance through a Dynamic Balance between Direct and Indirect Pathways.

Details

Serval ID
serval:BIB_47AA0C2D7E06
Type
Article: article from journal or magazin.
Collection
Publications
Title
Mossy Cells Control Adult Neural Stem Cell Quiescence and Maintenance through a Dynamic Balance between Direct and Indirect Pathways.
Journal
Neuron
Author(s)
Yeh C.Y., Asrican B., Moss J., Quintanilla L.J., He T., Mao X., Cassé F., Gebara E., Bao H., Lu W., Toni N., Song J.
ISSN
1097-4199 (Electronic)
ISSN-L
0896-6273
Publication state
Published
Issued date
2018
Peer-reviewed
Oui
Volume
99
Number
3
Pages
493-510.e4
Language
english
Abstract
Mossy cells (MCs) represent a major population of excitatory neurons in the adult dentate gyrus, a brain region where new neurons are generated from radial neural stem cells (rNSCs) throughout life. Little is known about the role of MCs in regulating rNSCs. Here we demonstrate that MC commissural projections structurally and functionally interact with rNSCs through both the direct glutamatergic MC-rNSC pathway and the indirect GABAergic MC-local interneuron-rNSC pathway. Specifically, moderate MC activation increases rNSC quiescence through the dominant indirect pathway, while high MC activation increases rNSC activation through the dominant direct pathway. In contrast, MC inhibition or ablation leads to a transient increase of rNSC activation, but rNSC depletion only occurs after chronic ablation of MCs. Together, our study identifies MCs as a critical stem cell niche component that dynamically controls adult NSC quiescence and maintenance under various MC activity states through a balance of direct glutamatergic and indirect GABAergic signaling onto rNSCs.
Keywords
adult hippocampal neurogenesis, maintenance, mossy cells, neural stem cells, quiescence
Pubmed
Web of science
Create date
07/08/2018 10:47
Last modification date
07/09/2018 9:17
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