RESUMO
OBJECTIVE: A little is known about the role of miRNA-153 expression in prostate cancer (PCa), in this study we aimed to determine the prognostic value of miRNA-153 and PTEN expression in PCa, by correlating their expression with Gleason patterns, Gleason scores, and Grade groups. PATIENTS AND METHODS: In situ hybridization for miRNA-153 and immunohistochemical staining for PTEN were applied on microarray sections of 80 PCa, with different Gleason grades, and 20 benign prostate hyperplasia (BPH) cases. RESULTS: We found that miRNA-153 expression was significantly higher and PTEN was significantly lower in PCa compared to BPH. In PCa, high miRNA-153 expression and loss of PTEN expression were associated significantly with higher Gleason patterns, higher Gleason scores, and higher Grade groups. The expression of miRNA-153 showed a significant inverse correlation with PTEN expression. CONCLUSIONS: Increased miRNA-153 expression and lost PTEN expression in PCa may provide information on their role in the progression of this cancer, suggesting that miRNA-153 could affect PTEN directly in prostatic neoplastic and hyperplastic lesions, and therefore miRNA-153 can be considered a new tool to improve the treatment efficacy and prognosis of PCa patients.
