Format

Send to

Choose Destination
See comment in PubMed Commons below
Cancer Res. 2007 Mar 15;67(6):2396-401.

Mutant p53 enhances nuclear factor kappaB activation by tumor necrosis factor alpha in cancer cells.

Author information

1
Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel.

Abstract

Mutations in the p53 tumor suppressor are very frequent in human cancer. Often, such mutations lead to the constitutive overproduction of mutant p53 proteins, which may exert a cancer-promoting gain of function. We now report that cancer-associated mutant p53 can augment the induction of nuclear factor kappaB (NFkappaB) transcriptional activity in response to the cytokine tumor necrosis factor alpha (TNFalpha). Conversely, down-regulation of endogenous mutant p53 sensitizes cancer cells to the apoptotic effects of TNFalpha. Analysis of human head and neck tumors and lung tumors reveals a close correlation between the presence of abundant mutant p53 proteins and the constitutive activation of NFkappaB. Together, these findings suggest that p53 mutations may promote cancer progression by augmenting NFkappaB activation in the context of chronic inflammation.

PMID:
17363555
DOI:
10.1158/0008-5472.CAN-06-2425
[Indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Support Center