PUBLICATION
Notch activity levels control the balance between quiescence and recruitment of adult neural stem cells
- Authors
- Chapouton, P., Skupien, P., Hesl, B., Coolen, M., Moore, J.C., Madelaine, R., Kremmer, E., Faus-Kessler, T., Blader, P., Lawson, N.D., and Bally-Cuif, L.
- ID
- ZDB-PUB-100614-32
- Date
- 2010
- Source
- The Journal of neuroscience : the official journal of the Society for Neuroscience 30(23): 7961-7974 (Journal)
- Registered Authors
- Bally-Cuif, Laure, Blader, Patrick, Chapouton, Prisca, Lawson, Nathan, Madelaine, Romain, Moore, John
- Keywords
- none
- MeSH Terms
-
- Adult Stem Cells/metabolism*
- Animals
- Cell Differentiation/physiology*
- Green Fluorescent Proteins/genetics
- Green Fluorescent Proteins/metabolism
- Immunohistochemistry
- In Situ Hybridization
- Nerve Growth Factors/genetics
- Nerve Growth Factors/metabolism
- Neurogenesis/physiology*
- Neurons/metabolism*
- Proliferating Cell Nuclear Antigen/genetics
- Proliferating Cell Nuclear Antigen/metabolism
- Receptors, Notch/metabolism*
- S100 Calcium Binding Protein beta Subunit
- S100 Proteins/genetics
- S100 Proteins/metabolism
- Telencephalon/cytology*
- Zebrafish
- PubMed
- 20534844 Full text @ J. Neurosci.
Citation
Chapouton, P., Skupien, P., Hesl, B., Coolen, M., Moore, J.C., Madelaine, R., Kremmer, E., Faus-Kessler, T., Blader, P., Lawson, N.D., and Bally-Cuif, L. (2010) Notch activity levels control the balance between quiescence and recruitment of adult neural stem cells. The Journal of neuroscience : the official journal of the Society for Neuroscience. 30(23):7961-7974.
Abstract
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.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping