Metastasis-associated protein 1 inhibits p53-induced apoptosis

Hyo-Eun Moon, Hwanju Cheon, Myung-Shik Lee
2007 Oncology Reports  
Metastasis-associated protein 1 (MTA1) is highly upregulated in cancer cells with metastatic potential; however, the molecular mechanism by which MTA1 increases the metastatic potential of cancer cells is far from clear. We characterized the functional consequences of MTA1 overexpression on p53-induced apoptosis of cancer cells. MTA1 was associated with p53 in a co-immunoprecipitation assay. MTA1 also had deacetylation activity on p53 in human non-small cell lung cancer cells H1299 and human
more » ... H1299 and human hepatoma cells SK-Hep1. MTA1 attenuated the transactivation and p21 induction by p53. Moreover, MTA1 expression decreased p53mediated apoptosis. These results indicate that MTA1 inhibits p53-induced apoptosis by deacetylation of p53, which might be related to the increased metastatic potential of cancer cells with high MTA1 expression. Abbreviations: MTA1, metastasis-associated protein 1; HDAC, histone deacetylase; NuRD, nucleosome remodeling histone deacetylation; NaBu, sodium butyrate
doi:10.3892/or.18.5.1311 fatcat:ltb73x3dazhslllkideab2pqbi