Cited by 176Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsMicrotubule and mitosis dynamics

Early aging–associated phenotypes in Bub3/Rae1 haploinsufficient mice

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Baker, Darren J., Jeganathan, Karthik B., Malureanu, Liviu, Perez-Terzic, Carmen, Terzic, Andre, van Deursen, Jan M.A.·2006·The Journal of Cell Biology

Abstract

Aging is a highly complex biological process that is believed to involve multiple mechanisms. Mice that have small amounts of the mitotic checkpoint protein BubR1 age much faster than normal mice, but whether other mitotic checkpoint genes function to prevent the early onset of aging is unknown. In this study, we show that several aging-associated phenotypes appear early in mice that are double haploinsufficient for the mitotic checkpoint genes Bub3 and Rae1 but not in mice that are single haploinsufficient for these genes. Mouse embryonic fibroblasts (MEFs) from Bub3/Rae1 haploinsufficient mice undergo premature senescence and accumulate high levels of p19, p53, p21, and p16, whereas MEFs from single haploinsufficient mice do not. Furthermore, although BubR1 hypomorphic mice have less aneuploidy than Bub3/Rae1 haploinsufficient mice, they age much faster. Our findings suggest that early onset of aging-associated phenotypes in mice with mitotic checkpoint gene defects is linked to cellular senescence and activation of the p53 and p16 pathways rather than to aneuploidy.

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  • Reducing the level of various mitotic checkpoint genes leads to chromosomal instability, augmented aneuploidy and the phenotypic appearance of progeroid mice.

    “reducing the level of various mitotic checkpoint genes leads to chromosomal instability, augmented aneuploidy and the phenotypic appearance of progeroid mice 36, 37”

    From The common biology of cancer and ageing (2007) · cites this paper as [37]

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Authors
Baker, D. J., Jeganathan, K. B., Malureanu, L., Perez-Terzic, C., Terzic, A., & van Deursen, J. M. A.
Affiliations
  • 1Department of Pediatric and Adolescent Medicine
  • 3Department of Medicine,
Venue
The Journal of Cell Biology
Published
2006-02-13
Volume
172
Issue
4
Pages
529-540
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2021488377
Cited by
175
References
58
Citations by year
2026: 2 · 2025: 2 · 2024: 7 · 2023: 3 · 2022: 4 · 2021: 7 · 2020: 2 · 2019: 10 · 2018: 9 · 2017: 7 · 2016: 8 · 2015: 9 · 2014: 12 · 2013: 13 · 2012: 11
FWCI
10.16
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (CA-96985, CA-77262, R01CA077262, 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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
Keywords
aging, Bub3, Rae1, BubR1, spindle assembly checkpoint, haploinsufficiency, premature senescence, cellular senescence, p53 pathway, p16, p21, p19, aneuploidy, mouse embryonic fibroblasts
MeSH terms
Poly-ADP-Ribose Binding Proteins, Aneuploidy, Animals, Chromosomal Proteins, Non-Histone, Haplotypes, Mice, Mutant Strains, Mutation, Neoplasms, Phenotype, Mice, Knockout, Cell Cycle Proteins, Aging, Premature, Nucleocytoplasmic Transport Proteins, Nuclear Matrix-Associated Proteins, Mice

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