Methylation-associated miR-193b silencing activates master drivers of aggressive prostate cancer.

ABSTRACT: Epigenetic silencing of miRNA is a primary mechanism of aberrant miRNA expression in cancer, and hypermethylation of miRNA promoters has been reported to contribute to prostate cancer initiation and progression. Recent data have shown that the miR-193b promoter is hypermethylated in prostate cancer compared with normal tissue, but studies assessing its functional significance have not been performed. We aimed to elucidate the function of miR-193b and identify its critical targets in prostate cancer. We observed an inverse correlation between miR-193b level and methylation of its promoter in The Cancer Genome Atlas (TCGA) cohort. Overexpression of miR-193b in prostate cancer cell lines inhibited invasion and induced apoptosis. We found that a majority of the top 150 genes downregulated when

SUBMITTER: Mazzu YZ 

PROVIDER: S-EPMC6717747 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature