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miR-139-5p regulates proliferation, apoptosis, and cell cycle of uterine leiomyoma cells by targeting TPD52

Authors Chen H, Xu H, Meng YG, Zhang Y, Chen JY, Wei XN

Received 20 March 2016

Accepted for publication 10 August 2016

Published 11 October 2016 Volume 2016:9 Pages 6151—6160


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 6

Editor who approved publication: Prof. Dr. Jianmin Xu

Hong Chen,1 Hong Xu,1 Yu-gang Meng,1 Yun Zhang,2 Jun-ying Chen,1 Xiao-ning Wei1

1Department of Gynaecology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 2Department of Gynaecology, The People’s Hospital of Suzhou High Tech District, Suzhou, Jiangsu, People’s Republic of China

Background: Uterine leiomyoma is one of the most common benign tumors in women. It dramatically decreases the quality of life in the affected women. However, there is a lack of effective treatment paradigms. Micro-RNAs are small noncoding RNA molecules that are extensively expressed in organisms, and they are interrelated with the occurrence and development of the tumor. miR-139-5p was found to be downregulated in various cancers, but its function and mechanism in uterine leiomyoma remain unknown. The aim of this study was to investigate the role of miR-139-5p and its target gene in uterine leiomyoma.
Methods: By using a bioinformatic assay, it was found that TPD52 was a potential target gene of miR-139-5p. Then, expressions of miR-139-5p and TPD52 in uterine leiomyoma and adjacent myometrium tissues were evaluated by quantitative real-time polymerase chain reaction and Western blot. Proliferation, apoptosis, and cell cycle of uterine leiomyoma cells transfected by miR-139-5p mimics or TPD52 siRNA were determined.
Results: It was observed that the expression of miR-139-5p in uterine leiomyoma tissues was significantly lower (P<0.001) than that in the adjacent myometrium tissues. Overexpression of miR-139-5p inhibited the growth of uterine leiomyoma cells and induced apoptosis and G1 phase arrest. Dual-luciferase reporter assay and Western blot validated that TPD52 is the target gene of miR-139-5p. Furthermore, downregulation of TPD52 by siRNA in uterine leiomyoma cells inhibited cell proliferation and induced cell apoptosis and G1 phase arrest.
Conclusion: Data suggested that miR-139-5p inhibited the proliferation of uterine leiomyoma cells and induced cell apoptosis and G1 phase arrest by targeting TPD52.

Keywords: micro-RNA, miR-139-5p, tumor protein D52, uterine leiomyoma

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