Open Access

MicroRNA‑383‑5p acts as a prognostic marker and inhibitor of cell proliferation in lung adenocarcinoma by cancerous inhibitor of protein phosphatase 2A

  • Authors:
    • Shasha Zhao
    • Xinyuan Gao
    • Shuzhi Zang
    • Yunxia Li
    • Xianjun Feng
    • Xiaomei Yuan
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  • Published online on: July 18, 2017     https://doi.org/10.3892/ol.2017.6603
  • Pages: 3573-3579
  • Copyright: © Zhao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Lung cancer is the leading cause of cancer‑associated mortality worldwide. MicroRNAs (miRNAs/miRs) serve a role in the occurrence and development of lung cancer. The aim of the present study was to analyze the expression and function of the proliferation‑associated miR‑383‑5p in lung adenocarcinoma (LAC). Samples of human LAC and matched adjacent normal lung tissues were surgically removed, and miR‑383‑5p expression and the pathological characteristics of lung adenocarcinoma were investigated. The present study revealed that miR‑383‑5p expression level was significantly decreased in LAC tissues and its expression levels were markedly associated with tumor size and differe­ntiation. Overexpression of miR‑383‑5p in A549 and H1299 LAC cell lines inhibited cell proliferation by G1 cell cycle phase arrest and induction of apoptosis. Cancerous inhibitor of protein phosphatase 2A (CIP2A), a potential target gene of miR‑383‑5p, was inversely associated with miR‑383‑5p expression level in LAC tissues and cell lines. Furthermore, the results of the present study demonstrated that CIP2A was directly regulated by miR‑383‑5p and the restoration of CIP2A expression reversed the inhibitory effects of miR‑383‑5p on LAC cell proliferation. In conclusion, the results of the present study demonstrated that miR‑383‑5p was downregulated in LAC tissues. By targeting CIP2A, miR‑383‑5p exerts its anti‑proliferative function in LAC, suggesting its use a potential novel potential prognostic biomarker and therapeutic target for LAC.
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September-2017
Volume 14 Issue 3

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Zhao S, Gao X, Zang S, Li Y, Feng X and Yuan X: MicroRNA‑383‑5p acts as a prognostic marker and inhibitor of cell proliferation in lung adenocarcinoma by cancerous inhibitor of protein phosphatase 2A. Oncol Lett 14: 3573-3579, 2017
APA
Zhao, S., Gao, X., Zang, S., Li, Y., Feng, X., & Yuan, X. (2017). MicroRNA‑383‑5p acts as a prognostic marker and inhibitor of cell proliferation in lung adenocarcinoma by cancerous inhibitor of protein phosphatase 2A. Oncology Letters, 14, 3573-3579. https://doi.org/10.3892/ol.2017.6603
MLA
Zhao, S., Gao, X., Zang, S., Li, Y., Feng, X., Yuan, X."MicroRNA‑383‑5p acts as a prognostic marker and inhibitor of cell proliferation in lung adenocarcinoma by cancerous inhibitor of protein phosphatase 2A". Oncology Letters 14.3 (2017): 3573-3579.
Chicago
Zhao, S., Gao, X., Zang, S., Li, Y., Feng, X., Yuan, X."MicroRNA‑383‑5p acts as a prognostic marker and inhibitor of cell proliferation in lung adenocarcinoma by cancerous inhibitor of protein phosphatase 2A". Oncology Letters 14, no. 3 (2017): 3573-3579. https://doi.org/10.3892/ol.2017.6603