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Long non-coding RNA PSMG3-AS1 is known to play critical roles in several types of cancer, while its role in prostate carcinoma (PC) is unknown. This study aimed to explore the involvement of PSMG3-AS1 in PC. In this study, RT-qPCR analysis showed that PSMG3-AS1 was upregulated, while miR-106b was downregulated in PC. PSMG3-AS1 and miR-106b were inversely and significantly correlated across PC tissue samples. In addition, in PC cells, overexpression of PSMG3-AS1 increased the DNA methylation of miR-106b and decreased the expression levels of miR-106b. In contrast, no significant alteration in the expression of PSMG3-AS1 was observed in cells transfected with miR-106b mimic. Cell proliferation analysis showed that PSMG3-AS1 reduced the inhibitory effects of miR-106b overexpression on cell proliferation. Taken together, our data suggested that PSMG3-AS1 could downregulate miR-106b through DNA methylation to suppress PC cell proliferation.

LncRNA PSMG3-AS1 is upregulated in prostate carcinoma and downregulates miR-106b through DNA methylation