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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 renfang@foxmail.comPurpose: 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 |
