MiR-363-3p modulates cell growth and invasion in glioma by directly targeting pyruvate dehydrogenase B.

OBJECTIVE: This study is designed to investigate the role of miR-363-3p in the cancer development of glioma. PATIENTS AND METHODS: The expression of miR-363-3p in glioma and adjacent noncancerous tissue was measured using quantitative RT-PCR. The expression of a target gene of miR-363-3p, pyruvate dehydrogenase B (PDHB), was determined by Western blot. The level of miR-363-3p was increased or decreased by transfected with miR-363-3p mimic or miR-363-3p inhibitor, respectively. The impact of miR-363-3p on cell growth, apoptosis and invasion was determined by CCK-8 (Cell Counting Kit) assay, flow cytometry, and transwell assay. The role of PDHB in mediating the oncogenic activities was demonstrated by co-transfected PDHB vector and miR-363-3p mimic. RESULTS: Our results have shown that miR-3663-3p level was significantly higher in glioma tissue. Furthermore, miR-363-3p functions as onco-miRNA, promotes cell proliferation, protects against apoptosis, and enhances invasion by directly targeting PDHB. CONCLUSIONS: MiR-363-3p is an onco-miRNA, which can be considered as a potential therapeutic target in glioma.