J Cancer 2019; 10(17):3908-3913. doi:10.7150/jca.31615 This issue

Research Paper

circGFRA1 Promotes Ovarian Cancer Progression By Sponging miR-449a

Jie Liu1, Furong Yu1, Shufen Wang1, Xia Zhao1, Feng Jiang1, Jing Xie1✉, Min Deng2✉

1. Department of Gynaecology and Obstetrics, The First Affiliated Hospital of University of South China, Hengyang, Hunan
2. Cancer Hospital and Cancer Research Institute, Guangzhou Medical University, Guangzhou, Guangdong

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Liu J, Yu F, Wang S, Zhao X, Jiang F, Xie J, Deng M. circGFRA1 Promotes Ovarian Cancer Progression By Sponging miR-449a. J Cancer 2019; 10(17):3908-3913. doi:10.7150/jca.31615. Available from https://www.jcancer.org/v10p3908.htm

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Backgroud: Increasing studies show that circular RNAs (circRNAs) play important roles in tumor progression. However, the function of circRNAs in ovarian cancer is mostly unclear.

Methods: We detected the expression of circGFRA1 by quantitative real-time PCR (qRT-PCR) in 50 pairs of ovarian cancer tissues and adjacent normal tissues. Then, we explored the function of circGFRA1 in ovarian cancer progression, such as cell proliferation, apoptosis and invasion. Moreover, we performed luciferase reporter and RNA immunoprecipitation (RIP) assay to study the competing endogenous RNA (ceRNA) function of circGFRA1 in ovarian cancer progression.

Results: qRT-PCR showed that circGFRA1 was overexpressed in ovarian cancer tissues. Inhibition of circGFRA1 suppressed cell proliferation and invasion, but induced cell apoptosis in ovarian cancer. Luciferase reporter and RIP assay revealed that circGFRA1 could regulate the expression of GFRA1 by sponging miR-449a.

Conclusions: In summary, circGFRA1 regulated GFRA1 expression and ovarian cancer progression by sponging miR-449a. circGFRA1 could be a potential diagnostic biomarker and therapeutic target for ovarian cancer.

Keywords: circular RNAs, circGFRA1, miR-449a, GFRA1, competitive endogenous RNAs, ovarian cancer