Cited by 130Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsCancer-related Molecular Pathways

p21 Both Attenuates and Drives Senescence and Aging in BubR1 Progeroid Mice

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Baker, Darren J., Weaver, Robbyn L., van Deursen, Jan M.·2013·Cell Reports

Abstract

BubR1 insufficiency occurs with natural aging and induces progeroid phenotypes in both mice and children with mosaic variegated aneuploidy syndrome. In response to BubR1 insufficiency, skeletal muscle, fat, and lens tissue engage p19(Arf) to attenuate senescence and age-related deterioration. Here, we address how p19(Arf) exerts this caretaker role using BubR1 progeroid mice lacking p53 or its transcriptional target p21. We show that p53 delays functional decline of skeletal muscle and fat in a p21-dependent fashion by inhibiting p16(Ink4a)-mediated senescence of progenitor cells. Strikingly, p53 also attenuates the formation of cataractous lenses, but here its antiaging effect is p21 independent, as we found p21 to promote senescence of lens epithelial cells and cataract formation. Together, these results demonstrate that p53 counteracts tissue destruction in response to BubR1 insufficiency through diverse mechanisms and uncover a causal link between senescence of the progenitor cell compartment and age-related dysfunction.

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Authors
Baker, D. J., Weaver, R. L., & van Deursen, J. M.
Affiliations
Mayo Clinic (US)
Venue
Cell Reports
Publisher
Elsevier BV
Published
2013-04
Volume
3
Issue
4
Pages
1164-1174
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2066844712
Cited by
130
References
48
Citations by year
2026: 4 · 2025: 7 · 2024: 8 · 2023: 5 · 2022: 8 · 2021: 6 · 2020: 12 · 2019: 14 · 2018: 11 · 2017: 6 · 2016: 14 · 2015: 18 · 2014: 14 · 2013: 3
FWCI
11.37
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Radboud Repository (Radboud University) (submittedVersion)
  • Radboud Repository (Radboud University) (submittedVersion, other-oa)
Funders
  • Ellison Medical Foundation
  • Mayo Clinic
  • National Institutes of Health
  • National Institute on Aging (AG-41122, P01AG041122)
  • National Cancer Institute (CA-96985, R01CA096985)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
progeroid mice, p21, p53, p19ARF, cellular senescence, aging, p16INK4a, skeletal muscle, adipose tissue, cataract, lens epithelial cells, progenitor cells
MeSH terms
Adipose Tissue, Alleles, Animals, Cataract, Cell Line, Genotype, Lens, Crystalline, Longevity, Mosaicism, Stem Cells, Tumor Suppressor Protein p53, Cellular Senescence, Protein Serine-Threonine Kinases, Muscle, Skeletal, Cell Cycle Proteins, Chromosome Disorders, Cyclin-Dependent Kinase Inhibitor p21, Cyclin-Dependent Kinase Inhibitor p19, Mice

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