Abstract
MicroRNAs (miRNA/miRs) have been demonstrated to be critical post-transcriptional modulators of gene expression during tumorigenesis. Numerous miRNAs have been revealed to be downregulated in human epithelial ovarian cancer (EOC). In the present study, it was observed that the expression of miR-145 was decreased in EOC tissues and cell lines. Overexpression of miR-145 inhibited the proliferation, migration and invasion of EOC cells. The D-type cyclin 2, cyclin D2 (CCND2), and E2F transcription factor 3 (E2F3) were confirmed to be targets of miR-145. In addition, restoration of these 2 genes significantly reversed the tumor suppressive effects of miR-145. Collectively, the results indicated that miR-145 serves a critical role in suppressing the biological behavior of EOC cells by targeting CCND2 and E2F3. Therefore, miR-145 was suggested to be a potential miRNA-based therapeutic target in ovarian cancer.
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