Resveratrol is a polyphenolic compound whose antitumor activity has been demonstrated in several types of cancer. However, there are few studies on its molecular mechanisms of action in bladder cancer. Therefore, we aimed to evaluate resveratrol activity in bladder tumour cells with different TP53 gene status. Cytotoxicity, cell proliferation, reactive oxygen species (ROS) production, cell migration, mutagenicity, and CDH1, CTNNBIP1, HAT1, HDAC1, MYC, and SMAD4 gene expression were evaluated. An increase in ROS after resveratrol treatment was accompanied by reduced cell viability and proliferation in all cell lines. In TP53 wild-type cells, the inhibition of cell migration was accompanied by CDH1 and SMAD4 modulation. In TP53 mutated cells, cell migration inhibition with CDH1 and CTNNB1P1 upregulation was observed. In conclusion, resveratrol has antiproliferative effect in bladder tumour cells and its mechanism of action occurred through ROS production, interference with cell cycle, and inhibition of cell migration, independent of TP53 status.
Keywords: TP53 gene; bladder cancer; cell migration; cell proliferation; reactive oxygen species; resveratrol.