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

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 instabilit

SUBMITTER: Overholtzer M 

PROVIDER: S-EPMC208795 | biostudies-literature | 2003 Sep

REPOSITORIES: biostudies-literature