Methionine adenosyltransferase 2B, HuR, and sirtuin 1 protein cross-talk impacts on the effect of resveratrol on apoptosis and growth in liver cancer cells.

ABSTRACT: Resveratrol is growth-suppressive and pro-apoptotic in liver cancer cells. Methionine adenosyltransferase 2B (MAT2B) encodes for two dominant variants V1 and V2 that positively regulate growth, and V1 is anti-apoptotic when overexpressed. Interestingly, crystal structure analysis of MAT2B protein (MATβ) protomer revealed two resveratrol binding pockets, which raises the question of the role of MAT2B in resveratrol biological activities. We found that resveratrol induced the expression of MAT2BV1 and V2 in a time- and dose-dependent manner by increasing transcription, mRNA, and protein stabilization. Following resveratrol treatment, HuR expression increased first, followed by SIRT1 and MAT2B. SIRT1 induction contributes to increased MAT2B transcription whereas HuR induction increased MAT2B

SUBMITTER: Yang H 

PROVIDER: S-EPMC3743488 | biostudies-literature | 2013 Aug

REPOSITORIES: biostudies-literature