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MicroRNA-194 promotes the growth, migration, and invasion of ovarian carcinoma cells by targeting protein tyrosine phosphatase nonreceptor type 12

Authors Liang T, Li L, Cheng Y, Ren C, Zhang G

Received 23 June 2015

Accepted for publication 13 January 2016

Published 15 July 2016 Volume 2016:9 Pages 4307—4315


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Faris Farassati

Tian Liang, Liru Li, Yan Cheng, Chengcheng Ren, Guangmei Zhang

Department of Gynecology and Obstetrics, The first Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, Hei Longjiang, People’s Republic of China

Ovarian carcinoma is the most lethal gynecologic malignancy among women. Ovarian cancer metastasis is the main reason for poor prognosis. MicroRNAs (miRNAs) have been shown to play an important role in tumorigenesis and metastasis in various cancers by affecting the expression of their targets. In this study, we explored the role of miR-194 in ovarian cancer. Real-time polymerase chain reaction assays showed that miR-194 was significantly upregulated in ovarian cancer tissues. Overexpression of miR-194 in ovarian cancer cells promotes cell proliferation, migration, and invasion; in contrast, inhibition of the expression of miR-194 has the opposite effects. Meanwhile, bioinformatics tools were used to identify protein tyrosine phosphatase nonreceptor type 12 (PTPN12) as a potential target of miR-194. The luciferase assay showed that miR-194 directly binds to the 3'-untranslated region of PTPN12. Western blot analysis and quantitative real-time polymerase chain reaction assay revealed that PTPN12 expression was negatively associated with miR-194 expression in both ovarian cancer tissues and cells. Thus, we conclude that miR-194 targets PTPN12 and functions as an oncogene in ovarian cancer cells. This novel pathway may provide a new insight to explain ovarian cancer development and metastasis.

Keywords: miR-194, ovarian cancer, PTPN12, metastasis

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