OncoTargets and Therapy (Sep 2020)
Targeting of KDM5A by miR-421 in Human Ovarian Cancer Suppresses the Progression of Ovarian Cancer Cells
Abstract
Fang Ren, Christina Shrestha, Huirong Shi, Fangfang Sun, Minghui Zhang, Yuan Cao, Gailing Li Department of Gynecology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of ChinaCorrespondence: Fang RenDepartment of Gynecology, First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou 450052, People’s Republic of ChinaTel +8613849115866Email [email protected]: The retinoblastoma binding protein RBP2 (KDM5A) is a histone demethylase that promotes cell growth in many human cancers. A series of functional experiments were conducted to explore the role of miR-421/KDM5A in ovarian cancer cells and their underlying molecular mechanisms.Materials and Methods: Public microarray databases were analyzed to assess KDM5A and miR-421 expression in ovarian cancer. KDM5A was predicted to be a target of miR-421 using software analysis. The expression of the miR-421/KDM5A regulatory axis in ovarian cancer and the mechanisms of its effects on proliferation, migration, and invasion of ovarian cancer cell lines were investigated.Results: Compared with normal ovarian tissues, the expression of KDM5A mRNA and protein was elevated (P< 0.05), and miR-421 expression was reduced in ovarian cancer tissue (P< 0.05). miR-421 was found to bind specifically to the KDM5A gene. Silencing KDM5A or overexpressing miR-421 significantly inhibited proliferation, migration, and invasion of OVCAR-8 and SKOV-3 cells. Similarly, compared with nude mice injected with cells transfected with empty capsids, the in vivo proliferation rate of OVCAR-8 cells after miR-421 overexpression was reduced significantly.Conclusion: The miR-421/KDM5A regulatory axis plays an important role in the development and progression of ovarian cancer cells.Keywords: ovarian cancer, KDM5A/RBP2, miR-421, progression
