First Author | Keyes WM | Year | 2006 |
Journal | Proc Natl Acad Sci U S A | Volume | 103 |
Issue | 22 | Pages | 8435-40 |
PubMed ID | 16714381 | Mgi Jnum | J:110204 |
Mgi Id | MGI:3639627 | Doi | 10.1073/pnas.0602477103 |
Citation | Keyes WM, et al. (2006) p63 heterozygous mutant mice are not prone to spontaneous or chemically induced tumors. Proc Natl Acad Sci U S A 103(22):8435-40 |
abstractText | Homology between p63 and p53 has suggested that these proteins might function similarly. However, the majority of data from human tumors have not supported a similar role for p63 in tumor suppression. To investigate this issue, we studied spontaneous tumorigenesis in p63+/- mice in both WT and p53-compromised backgrounds. We found that p63+/- mice were not tumor prone and mice heterozygous for both p63 and p53 had fewer tumors than p53+/- mice. The rare tumors that developed in mice with compromised p63 were also distinct from those of p53+/- mice. Furthermore, p63+/- mice were not prone to chemically induced tumorigenesis, and p63 expression was maintained in carcinomas. These findings demonstrate that, in agreement with data from human tumors, p63 plays a markedly different biological role in cancer than p53. |