Abstract:
:Deregulation of microRNAs contributes to the abnormal cell growth which is frequently observed in cancer. In the current study, we detected the expression and regulatory relationship between miR-10a and Lysine-specific demethylase 4A (KDM4A) to reveal their function in prostate cancer (PCa) progression. We found that miR-10a levels were significantly decreased in PCa cell lines in comparison with the normal epithelial cell line RWPE-1. Downregulation of miR-10a levels was also observed in tumor tissues from PCa patients compared with the adjacent normal tissues. Enhanced expression of miR-10a inhibited cell proliferation and colony forming capability of PCa cells. In addition, quantitative real-time polymerase chain reaction and Western blot analysis showed a significant decrease of KDM4A in response to miR-10a elevation in PCa cells. Using dual luciferase assay, we confirmed that KDM4A was a target gene for miR-10a. Furthermore, Western blot analysis indicated that miR-10a overexpression inactivated YAP signaling and suppressed transcription of YAP target genes. Additionally, cell growth arrest and colony forming capacity inhibition induced by miR-10a overexpression could be reversed by YAP overexpression in PCa cells. More importantly, miR-10a mimics inhibited PC-3 tumor growth in nude mice accompanied with a remarkable reduction of KDM4A and YAP expression. In conclusion, our results uncovered a tumor suppressor role of miR-10a in PCa via negative regulation of KDM4A and its downstream Hippo-YAP pathway.
journal_name
J Cell Biochemjournal_title
Journal of cellular biochemistryauthors
Mu H,Xiang L,Li S,Rao D,Wang S,Yu Kdoi
10.1002/jcb.27774subject
Has Abstractpub_date
2019-04-01 00:00:00pages
4987-4997issue
4eissn
0730-2312issn
1097-4644journal_volume
120pub_type
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