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MicroRNA-142-3p inhibits cell proliferation and invasion of cervical cancer cells by targeting FZD7

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Tumor Biology

Abstract

MicroRNAs (miRNAs) are a class of small noncoding RNAs that play important roles in tumorigenesis and tumor progression through regulation of gene expression. Earlier, miR-142-3p was shown to decreased in cervical cancer cells; here; we explore the biological functional role of miR-142-3p and underlying mechanism in cervical cancer cells. We first detected the expression of miR-142-3p in six human cervical cancer cell lines and chose HeLa and SiHa cells for functional studies. By gain and loss of function experiments, we showed that overexpression of miR142-3p resulted in downregulation of Frizzled7 receptor (FZD7) and inhibited proliferation and invasion in HeLa and SiHa cells, whereas miR142-3p inhibitor-transfected cells showed reduced FZD7 expression and increased invasion capacity. In addition, we demonstrated that FZD7 was a direct target of miR-142-3p by dual luciferase assay and Western blot analysis. Overexpression of FZD7 expression was able to reverse the inhibitory effects induced by miR-142-3p. Taken together, miR-142-3p functions tumor suppressive effects in cell proliferation and invasion in cervical cancer cells, suggesting a potential therapeutic approach for cervical cancer.

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Acknowledgments

This study was supported by a grant from The First Affiliated Hospital of China Medical University (No. FSFH1214).

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Correspondence to Boya Deng.

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Deng, B., Zhang, Y., Zhang, S. et al. MicroRNA-142-3p inhibits cell proliferation and invasion of cervical cancer cells by targeting FZD7. Tumor Biol. 36, 8065–8073 (2015). https://doi.org/10.1007/s13277-015-3483-2

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  • DOI: https://doi.org/10.1007/s13277-015-3483-2

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