Cited by 292Neurogenesis and neuroplasticity mechanismsDevelopmental Biology and Gene RegulationNeuroinflammation and Neurodegeneration Mechanisms

Notch1 is required for maintenance of the reservoir of adult hippocampal stem cells

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Ables, Jessica L., DeCarolis, Nathan A., Johnson, Madeleine A., Rivera, Phillip D., Gao, Zhengliang, Cooper, Don C., Radtke, Freddy, Hsieh, Jenny +1 more·2010·The Journal of Neuroscience

Abstract

Notch1 regulates neural stem cell (NSC) number during development, but its role in adult neurogenesis is unclear. We generated nestin-CreER T2 /R26R-YFP/Notch1 loxP/loxP [Notch1inducible knock-out (iKO)] mice to allow tamoxifen (TAM)-inducible elimination of Notch1 and concomitant expression of yellow fluorescent protein (YFP) in nestin-expressing Type-1 NSCs and their progeny in the adult hippocampal subgranular zone (SGZ). Consistent with previous research, YFP+ cells in all stages of neurogenesis were evident in the subgranular zone (SGZ) of wild-type (WT) mice (nestin-CreER T2 /R26R-YFP/Notch1 w/w ) after tamoxifen (post-TAM), producing adult-generated YFP+ dentate gyrus neurons. Compared with WT littermates, Notch1 iKO mice had similar numbers of total SGZ YFP+ cells 13 and 30 d post-TAM but had significantly fewer SGZ YFP+ cells 60 and 90 d post-TAM. Significantly fewer YFP+ Type-1 NSCs and transiently amplifying progenitors (TAPs) resulted in generation of fewer YFP+ granule neurons in Notch1 iKO mice. Strikingly, 30 d of running rescued this deficit, as the total YFP+ cell number in Notch iKO mice was equivalent to WT levels. This was even more notable given the persistent deficits in the Type-1 NSC and TAP reservoirs. Our data show that Notch1 signaling is required to maintain a reservoir of undifferentiated cells and ensure continuity of adult hippocampal neurogenesis, but that alternative Notch- and Type-1 NSC-independent pathways compensate in response to physical activity. These data shed light on the complex relationship between Type-1 NSCs, adult neurogenesis, the neurogenic niche, and environmental stimuli.

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Crossref · 10.1523/jneurosci.4721-09.2010

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  • After deletion of Notch1, running is unable to rescue the decrease in stem cells in the dentate gyrus, despite a large increase of neurogenesis.

    “Conversely, after deletion of the quiescence-maintaining gene Notch1, which reduces the number of stem cells in the dentate gyrus, running is unable to rescue this decrease, despite the large increase of neurogenesis (Ables et al., 2010).”

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Authors
Ables, J. L., DeCarolis, N. A., Johnson, M. A., Rivera, P. D., Gao, Z., Cooper, D. C., Radtke, F., Hsieh, J., & Eisch, A. J.
Affiliations
  • The University of Texas Southwestern Medical Center (US)
  • University of Colorado Boulder (US)
  • École Polytechnique Fédérale de Lausanne (CH)
Venue
The Journal of Neuroscience
Published
2010-08-04
Volume
30
Issue
31
Pages
10484-10492
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2059201000
Cited by
292
References
55
Citations by year
2026: 8 · 2025: 12 · 2024: 6 · 2023: 8 · 2022: 12 · 2021: 20 · 2020: 13 · 2019: 21 · 2018: 20 · 2017: 25 · 2016: 15 · 2015: 19 · 2014: 28 · 2013: 27 · 2012: 26
FWCI
8.61
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
Funders
  • National Institutes of Health (NIH T32, DA007290)
  • National Institute of Mental Health (MH076690, T32MH076690)
  • National Institute on Drug Abuse (DA023701, R21DA023701, DA023555, K02DA023555, DA016765, T32DA007290, K01DA017750, R01DA016765)
  • National Institute of Neurological Disorders and Stroke (F31NS064632)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Notch1 signaling, adult hippocampal neurogenesis, neural stem cells, subgranular zone, dentate gyrus granule cells, running, compensatory neurogenesis, neurogenic niche
MeSH terms
Animals, Cell Count, Hippocampus, Immunohistochemistry, Mice, Transgenic, Neurons, Physical Conditioning, Animal, Mice, Receptor, Notch1, Adult Stem Cells, Neurogenesis

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