MicroRNA-30a-5p suppresses epithelial-mesenchymal transition by targeting profilin-2 in high invasive non-small cell lung cancer cell lines

Yan,Jiliang; Ma,Chunyan; Gao,Yue

doi:10.3892/or.2017.5566

MicroRNA-30a-5p suppresses epithelial-mesenchymal transition by targeting profilin-2 in high invasive non-small cell lung cancer cell lines

Authors:
- Jiliang Yan
- Chunyan Ma
- Yue Gao
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Affiliations: Department of Clinical Laboratory, Kaifeng Central Hospital, Kaifeng, Henan 475000, P.R. China, Department of Clinical Laboratory, Beibei Traditional Chinese Medical Hospital, Chongqing 400700, P.R. China
Published online on: April 11, 2017 https://doi.org/10.3892/or.2017.5566
Pages: 3146-3154

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Abstract

PFN2 is an invasion promoter in several cancers including lung cancer. However, the probable effects and underlying mechanisms of PFN2 in tumor cell epithelial-mesenchymal-transition (EMT) of non-small cell lung cancer (NSCLC) remain poorly understood. The protein and mRNA levels of PFN2 in human bronchial epithelial cell line 16HBE and three NSCLC cell lines A549, NCI-H520 and 95D were assessed. The gain-of-function (overexpression) and loss‑of-function (siRNA) experiments of PFN2 were performed in 95D cells. A dual-luciferase reporter assay, western blotting and real-time PCR were used to investigate the relationship between PFN2 and miR‑30a‑5p. PFN2 was upregulated in three NSCLC cell lines, and the highest in 95D cell line. Furthermore, the upregulation of PFN2 promoted, whereas the downregulation of PFN2 suppressed invasion and EMT in 95D. Dual-luciferase reporter assay showed that miR‑30a‑5p directly interacts with the 3'-untranslated region (3'-UTR) of PFN2 mRNA. Interestingly, miR‑30a‑5p negatively regulates the expression of PFN2 and suppresses EMT and invasion in 95D. In summary, the present study demonstrated that miR‑30a‑5p inhibits EMT and invasion in high invasive NSCLC cell lines via targeting PFN2. Suggesting the association of miR‑30a‑5p and PFN2 may play an essential role in the development of NSCLC by modulating EMT and cell invasion.

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