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Chapouton, P. ; Skupien, P. ; Hesl, B. ; Coolen, M. ; Moore, J.C.* ; Madelaine, R.* ; Kremmer, E. ; Faus-Kessler, T. ; Blader, P.* ; Lawson, N.D.* ; Bally-Cuif, L.

Notch activity levels control the balance between quiescence and recruitment of adult neural stem cells.

J. Neurosci. 30, 7961-7974 (2010)
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The limited generation of neurons during adulthood is controlled by a balance between quiescence and recruitment of neural stem cells (NSCs). We use here the germinal zone of the zebrafish adult telencephalon to examine how the frequency of NSC divisions is regulated. We show, using several in vivo techniques, that progenitors transit back and forth between the quiescent and dividing state, according to varying levels of Notch activity: Notch induction drives progenitors into quiescence, whereas blocking Notch massively reinitiates NSC division and subsequent commitment toward becoming neurons. Notch activation appears predominantly triggered by newly recruited progenitors onto their neighbors, suggesting an involvement of Notch in a self-limiting mechanism, once neurogenesis is started. These results identify for the first time a lateral inhibition-like mechanism in the context of adult neurogenesis and suggest that the equilibrium between quiescence and neurogenesis in the adult brain is controlled by fluctuations of Notch activity, thereby regulating the amount of adult-born neurons.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Central-nervous-system; Radial glial-cells; Subventricular zone; Self-renewal; Spinal-cord; Oligodendrocyte specification; Primary neurogenesis; Zebrafish retina; HES1 expression; Dentate Gyrus
Language english
Publication Year 2010
HGF-reported in Year 2010
ISSN (print) / ISBN 0270-6474
e-ISSN 1529-2401
Quellenangaben Volume: 30, Issue: 23, Pages: 7961-7974 Article Number: , Supplement: ,
Publisher Society for Neuroscience
Reviewing status Peer reviewed
POF-Topic(s) 30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health

30204 - Cell Programming and Repair
Research field(s)

Genetics and Epidemiology
PSP Element(s) G-500100-001
G-501700-003
G-500500-001
PubMed ID 20534844
Scopus ID 77953511847
Erfassungsdatum 2010-06-07