Cited by 972Neurogenesis and neuroplasticity mechanismsTelomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model Organisms

The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.

Increasing p16INK4a expression decreases forebrain progenitors and neurogenesis during ageing

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Abstract

Mammalian ageing is associated with reduced regenerative capacity in tissues that contain stem cells. It has been proposed that this is at least partially caused by the senescence of progenitors with age; however, it has not yet been tested whether genes associated with senescence functionally contribute to physiological declines in progenitor activity. Here we show that progenitor proliferation in the subventricular zone and neurogenesis in the olfactory bulb, as well as multipotent progenitor frequency and self-renewal potential, all decline with age in the mouse forebrain. These declines in progenitor frequency and function correlate with increased expression of p16INK4a, which encodes a cyclin-dependent kinase inhibitor linked to senescence. Ageing p16INK4a-deficient mice showed a significantly smaller decline in subventricular zone proliferation, olfactory bulb neurogenesis, and the frequency and self-renewal potential of multipotent progenitors. p16INK4a deficiency did not detectably affect progenitor function in the dentate gyrus or enteric nervous system, indicating regional differences in the response of neural progenitors to increased p16INK4a expression during ageing. Declining subventricular zone progenitor function and olfactory bulb neurogenesis during ageing are thus caused partly by increasing p16INK4a expression.

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Metadata

Authors
Molofsky, A. V., Slutsky, S. G., Joseph, N. M., He, S., Pardal, R., Krishnamurthy, J., Sharpless, N. E., & Morrison, S. J.
Affiliations
  • Howard Hughes Medical Institute (US)
  • University of North Carolina at Chapel Hill (US)
Corresponding author
Morrison, Sean J.
Venue
Nature
Published
2006-09
Volume
443
Issue
7110
Pages
448-452
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2065564965
Cited by
972
References
30
Citations by year
2026: 12 · 2025: 25 · 2024: 18 · 2023: 23 · 2022: 43 · 2021: 37 · 2020: 39 · 2019: 47 · 2018: 47 · 2017: 55 · 2016: 41 · 2015: 48 · 2014: 53 · 2013: 60 · 2012: 54
FWCI
23.23
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Deep Blue (University of Michigan) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • Ellison Medical Foundation
  • Sidney Kimmel Foundation for Cancer Research
  • Sidney Kimmel Foundation
  • National Institutes of Health
  • National Institute on Aging (R01AG024945)
  • National Institute of Neurological Disorders and Stroke
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
p16INK4a, cellular senescence, aging, neurogenesis, subventricular zone, olfactory bulb, multipotent progenitors, stem cell self-renewal, tumour suppressor, cyclin-dependent kinase inhibitors, type 2 diabetes, pancreatic islet regeneration
MeSH terms
Aging, Animals, Neurons, Olfactory Bulb, Regeneration, Stem Cells, Prosencephalon, Cyclin-Dependent Kinase Inhibitor p16, Cell Proliferation, Mice

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