Cited by 137Neurogenesis and neuroplasticity mechanismsGenetics, Aging, and Longevity in Model OrganismsDevelopmental Biology and Gene Regulation

Early stem cell aging in the mature brain

Open access
Ibrayeva, Albina, Bay, Maxwell, Pu, Elbert, Jörg, David J., Peng, Lei, Jun, Heechul, Zhang, Naibo, Aaron, Daniel +6 more·2021·Cell Stem Cell

Published version of a preprint

Abstract

Stem cell dysfunction drives many age-related disorders. Identifying mechanisms that initially compromise stem cell behavior represent early targets to promote tissue function later in life. Here, we pinpoint multiple factors that disrupt neural stem cell (NSC) behavior in the adult hippocampus. Clonal tracing showed that NSCs exhibit asynchronous depletion by identifying short-term NSCs (ST-NSCs) and long-term NSCs (LT-NSCs). ST-NSCs divide rapidly to generate neurons and deplete in the young brain. Meanwhile, multipotent LT-NSCs are maintained for months but are pushed out of homeostasis by lengthening quiescence. Single-cell transcriptome analysis of deep NSC quiescence revealed several hallmarks of molecular aging in the mature brain and identified tyrosine-protein kinase Abl1 as an NSC aging factor. Treatment with the Abl inhibitor imatinib increased NSC activation without impairing NSC maintenance in the middle-aged brain. Our study indicates that hippocampal NSCs are particularly vulnerable and adaptable to cellular aging.

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Crossref · 10.1016/j.stem.2021.03.018

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  • In the mouse brain, single-cell RNA-seq analyses indicate that the number of activated neural stem cells (NSCs) and neuroblasts decreases with ageing in both the subventricular zone (SVZ) NSC niche and the hippocampal NSC niche.

    “For example, in the mouse brain, single-cell RNA-seq analyses indicate that the number of activated neural stem cells (NSCs) and neuroblasts (progeny) decreases with ageing in both the subventricular zone (SVZ) NSC niche and the hippocampal NSC niche6–9 — the main locations of NSCs.”
  • Lineage tracing uncovered a subset of early-declining NSCs in the hippocampal neurogenic niche.

    “Lineage tracing uncovered a subset of early-declining NSCs in the hippocampal neurogenic niche9.”
  • Activated NSCs exhibit fewer overall transcriptomic changes with ageing than quiescent NSCs.

    “Interestingly, activated NSCs exhibit fewer overall transcriptomic changes with ageing than quiescent NSCs6–9,63,64, perhaps because activated NSCs are recently generated and do not have the time to accumulate damage, or because they ‘dilute’ the damage as they proliferate.”

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Authors
Ibrayeva, A., Bay, M., Pu, E., Jörg, D. J., Peng, L., Jun, H., Zhang, N., Aaron, D., Lin, C., Resler, G., Hidalgo, A., Jang, M.-H., Simons, B. D., & Bonaguidi, M. A.
Affiliations
  • University of Southern California (US)
  • University of Cambridge (GB)
  • Mayo Clinic (US)
Corresponding author
Bonaguidi, Michael A.
Venue
Cell Stem Cell
Publisher
Elsevier BV
Published
2021-05
Volume
28
Issue
5
Pages
955-966.e7
ISSN
  • 1875-9777 (ISSN-L)
  • 1934-5909
OpenAlex
W3153549711
Cited by
137
References
112
Citations by year
2026: 14 · 2025: 29 · 2024: 25 · 2023: 37 · 2022: 21 · 2021: 9 · 2020: 1 · 2019: 1
FWCI
8.31
Type
journal article
Language
en
Open access
Locations
  • Cell stem cell (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Apollo (University of Cambridge) (submittedVersion, cc-by-nc-nd)
  • Apollo
Funders
  • University of South China
  • University of Southern California
  • Donald E. and Delia B. Baxter Foundation
  • National Institutes of Health (R00NS080913, R56AG064077)
  • L. K. Whittier Foundation
  • Eli and Edythe Broad Foundation (RO1AG0585560)
  • Wellcome Trust (098357/Z/12/Z)
  • AFAR
  • Royal Society (RP\R1\180165)
  • American Foundation for Aging Research (T32HD060549-08)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
neural stem cells, stem cell aging, hippocampus, stem cell quiescence, stem cell depletion, imatinib, clonal tracing, single-cell transcriptomics, age-related neurodegeneration
MeSH terms
Brain, Hippocampus, Cellular Senescence, Neurogenesis, Neural Stem Cells

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