Cited by 66Cell death mechanisms and regulationMicrotubule and mitosis dynamicsCancer-related Molecular Pathways

Caspase-2-mediated cell death is required for deleting aneuploid cells

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Dawar, S, Lim, Y, Puccini, J, White, M, Thomas, P, Bouchier-Hayes, L, Green, D R, Dorstyn, L +1 more·2017·Oncogene

Abstract

Caspase-2, one of the most evolutionarily conserved of the caspase family, has been implicated in maintenance of chromosomal stability and tumour suppression. Caspase-2 deficient ( Casp2 −/− ) mice develop normally but show premature ageing-related traits and when challenged by certain stressors, succumb to enhanced tumour development and aneuploidy. To test how caspase-2 protects against chromosomal instability, we utilized an ex vivo system for aneuploidy where primary splenocytes from Casp2 −/− mice were exposed to anti-mitotic drugs and followed up by live cell imaging. Our data show that caspase-2 is required for deleting mitotically aberrant cells. Acute silencing of caspase-2 in cultured human cells recapitulated these results. We further generated Casp2 C320S mutant mice to demonstrate that caspase-2 catalytic activity is essential for its function in limiting aneuploidy. Our results provide direct evidence that the apoptotic activity of caspase-2 is necessary for deleting cells with mitotic aberrations to limit aneuploidy.

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  • Casp2−/− mice accumulate aneuploid bone marrow cells with aging; Casp2−/− malignant cells have increased aneuploidy vs wild-type.

    “In line with a key role for CASP2 in the control of mitotic proficiency, the bone marrow of Casp2−/− mice accumulates aneuploid cells with aging [985], and Casp2−/− malignant cells exhibit increased levels of aneuploidy as compared to their wild-type counterparts [982, 986, 987].”

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Authors
Dawar, S., Lim, Y., Puccini, J., White, M., Thomas, P., Bouchier-Hayes, L., Green, D. R., Dorstyn, L., & Kumar, S.
Affiliations
  • University of South Australia (AU)
  • SA Genome Editing Facility (AU)
  • St. Jude Children's Research Hospital (US)
Corresponding author
Kumar, S
Venue
Oncogene
Published
2016-12-19
Volume
36
Issue
19
Pages
2704-2714
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2564390156
Cited by
66
References
54
Citations by year
2026: 3 · 2025: 2 · 2024: 4 · 2023: 6 · 2022: 8 · 2021: 7 · 2020: 8 · 2019: 7 · 2018: 10 · 2017: 10 · 2016: 1
FWCI
4.85
Type
journal article
Language
en
Open access
Locations
  • Oncogene (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • UniSA Research Outputs Repository (University of South Australia) (submittedVersion, cc-by-nc-sa)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion, cc-by-nc-sa)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by-nc-sa)
Funders
  • Medical Research Council
  • National Health and Medical Research Council (1103006, 1043057)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
caspase-2, aneuploidy, mitotic aberrations, chromosome stability, apoptosis, cell death, premature aging, tumor suppression, antimitotic agents, mitotic catastrophe, catalytic activity
MeSH terms
Aneuploidy, Animals, Humans, Apoptosis, Mice, Knockout, Oxidative Stress, Chromosomal Instability, Mice, Caspase 2

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