The presence of p53 mutations in human osteosarcomas correlates with high levels of genomic instability

Michael Overholtzer, Pulivarthi H. Rao, Reyna Favis, Xin Yan Lu, Michael B. Elowitz, Francis Barany, Marc Ladanyi, Richard Gorlick, Arnold J. Levine

Research output: Contribution to journalArticle

127 Citations (Scopus)

Abstract

The p53 gene is a critical tumor suppressor that is inactivated in a majority of cancers. The central role of p53 in response to stresses such as DNA damage, hypoxia, and oncogene activation underlies this high frequency of negative selection during tumorigenic transformation. Mutations in p53 disrupt checkpoint responses to DNA damage and result in the potential for destabilization of the genome. Consistent with this, p53 mutant cells have been shown to accumulate genomic alterations in cell culture, mouse models, and some human tumors. The relationship between p53 mutation and genomic instability in human osteosarcoma is addressed in this report. Similar to some other primary human tumors, the mutation of p53 correlates significantly with the presence of high levels of genomic instability in osteosarcomas. Surprisingly, osteosarcomas harboring an amplification of the HDM2 oncogene, which inhibits the tumor-suppressive properties of p53, do not display high levels of genomic instability. These results demonstrate that the inactivation of p53 in osteosarcomas directly by mutation versus indirectly by HDM2 amplification may have different cellular consequences with respect to the stability of the genome.

Original languageEnglish (US)
Pages (from-to)11547-11552
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume100
Issue number20
DOIs
StatePublished - Sep 30 2003
Externally publishedYes

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Genomic Instability
Osteosarcoma
Mutation
Neoplasms
Oncogenes
DNA Damage
Neoplastic Cell Transformation
p53 Genes
Cell Culture Techniques
Genome

ASJC Scopus subject areas

  • Genetics
  • General

Cite this

The presence of p53 mutations in human osteosarcomas correlates with high levels of genomic instability. / Overholtzer, Michael; Rao, Pulivarthi H.; Favis, Reyna; Lu, Xin Yan; Elowitz, Michael B.; Barany, Francis; Ladanyi, Marc; Gorlick, Richard; Levine, Arnold J.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 100, No. 20, 30.09.2003, p. 11547-11552.

Research output: Contribution to journalArticle

Overholtzer, M, Rao, PH, Favis, R, Lu, XY, Elowitz, MB, Barany, F, Ladanyi, M, Gorlick, R & Levine, AJ 2003, 'The presence of p53 mutations in human osteosarcomas correlates with high levels of genomic instability', Proceedings of the National Academy of Sciences of the United States of America, vol. 100, no. 20, pp. 11547-11552. https://doi.org/10.1073/pnas.1934852100
Overholtzer, Michael ; Rao, Pulivarthi H. ; Favis, Reyna ; Lu, Xin Yan ; Elowitz, Michael B. ; Barany, Francis ; Ladanyi, Marc ; Gorlick, Richard ; Levine, Arnold J. / The presence of p53 mutations in human osteosarcomas correlates with high levels of genomic instability. In: Proceedings of the National Academy of Sciences of the United States of America. 2003 ; Vol. 100, No. 20. pp. 11547-11552.
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