Cited by 1,067Microtubule and mitosis dynamicsCancer-related Molecular PathwaysChromosomal and Genetic Variations

Cytokinesis failure generating tetraploids promotes tumorigenesis in p53-null cells

Fujiwara, Takeshi, Bandi, Madhavi, Nitta, Masayuki, Ivanova, Elena V., Bronson, Roderick T., Pellman, David·2005·Nature

Abstract

A long-standing hypothesis on tumorigenesis is that cell division failure, generating genetically unstable tetraploid cells, facilitates the development of aneuploid malignancies. Here we test this idea by transiently blocking cytokinesis in p53-null (p53-/-) mouse mammary epithelial cells (MMECs), enabling the isolation of diploid and tetraploid cultures. The tetraploid cells had an increase in the frequency of whole-chromosome mis-segregation and chromosomal rearrangements. Only the tetraploid cells were transformed in vitro after exposure to a carcinogen. Furthermore, in the absence of carcinogen, only the tetraploid cells gave rise to malignant mammary epithelial cancers when transplanted subcutaneously into nude mice. These tumours all contained numerous non-reciprocal translocations and an 8-30-fold amplification of a chromosomal region containing a cluster of matrix metalloproteinase (MMP) genes. MMP overexpression is linked to mammary tumours in humans and animal models. Thus, tetraploidy enhances the frequency of chromosomal alterations and promotes tumour development in p53-/- MMECs.

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Crossref · 10.1038/nature04217

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  • Polyploidy is considered a prerequisite to aneuploidy.

    “Polyploidy is considered a prerequisite to aneuploidy (Fujiwara et al., 2005, Ganem et al., 2007, Storchova and Kuffer, 2008, Thompson et al., 2010, Vitale et al., 2010)”
  • The polyploidy observed in Mdm2 transgenic cells is likely due at least in part to inhibition of p53 by Mdm2.

    “Since Mdm2 negatively regulates p53 (Marine and Lozano, 2010), and p53 inhibits the development of tetraploidy (Fujiwara et al., 2005, Ganem et al., 2007, Storchova and Kuffer, 2008, Thompson et al., 2010, Vitale et al., 2010), the polyploidy we observed in Mdm2 transgenic cells is likely due at least in part to inhibition of p53 by Mdm2.”

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Authors
Fujiwara, T., Bandi, M., Nitta, M., Ivanova, E. V., Bronson, R. T., & Pellman, D.
Affiliations
  • Harvard University (US)
  • Tufts University (US)
Corresponding author
Pellman, David
Venue
Nature
Published
2005-10-13
Volume
437
Issue
7061
Pages
1043-1047
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1970442105
Cited by
1,067
References
30
Citations by year
2026: 28 · 2025: 35 · 2024: 46 · 2023: 53 · 2022: 51 · 2021: 59 · 2020: 44 · 2019: 46 · 2018: 65 · 2017: 62 · 2016: 59 · 2015: 69 · 2014: 37 · 2013: 58 · 2012: 76
FWCI
17.28
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • The Mouseion at the JAXlibrary (Jackson Laboratory) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
cytokinesis failure, tetraploidy, carcinogenesis, p53-null cells, mammary epithelial cells, chromosomal rearrangements, non-reciprocal translocation, carcinogen-induced transformation, mammary tumors, chromosomal instability
MeSH terms
Animals, Cell Survival, Cell Transformation, Neoplastic, Chromosome Aberrations, Epithelial Cells, Female, Mammary Glands, Animal, Mice, Nude, Myoepithelioma, Polyploidy, Genes, p53, Tumor Suppressor Protein p53, Cell Transplantation, Matrix Metalloproteinases, Cytokinesis, Mice

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