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Prostate cancer is one of the most common malignancies and the second leading cause of death from cancer in men. MicroRNAs are noncoding RNAs that have a role of post-transcriptional regulators. In this study we investigated how the tumour suppressor miR-15a modulates main transcription factors like cMYB and AR in androgen sensitive prostate cancer cell line LNCaP. The miR-15a inhibitor, mimic, and their negative controls were transfected into LNCaP cells. Real-time PCR analysis was performed in order to estimate the transcript levels of cMYB and AR. Flow cytometry analysis was performed to measure the protein levels of cMYB and AR. A Cell migration assay was done for cells transfected with miR-15a inhibitor and mimic. We found that cMYB is down-regulated and AR is up-regulated by miR-15a on the transcriptional and protein levels. By reconstituting miR-15a, we found that its down regulation in prostate cancer contributes to cMYB-induced cancer progression and reduced androgen receptivity. The ability of miR-15a to suppress cancer cell viability and migration is a very important phenomenon for understanding cancer heterogeneity in regard to adapted therapeutic approach development

Mir-15A Reconstitution in Prostate Cancer Cell Line Suppresses Cancer Progression Through Down Regulation of MYB and Androgen Receptor Upregulation