miR‑1225‑5p inhibits non‑small cell lung cancer cell proliferation, migration and invasion, and may be a prognostic biomarker

Li,Bin; Zhang,Fengmin; Li,Hong

doi:10.3892/etm.2020.9302

miR‑1225‑5p inhibits non‑small cell lung cancer cell proliferation, migration and invasion, and may be a prognostic biomarker

Authors:
- Bin Li
- Fengmin Zhang
- Hong Li
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Affiliations: Department of Respiratory Medicine, Shouguang People's Hospital, Shouguang, Shandong 262700, P.R. China, Department of Obstetrics, Shouguang People's Hospital, Shouguang, Shandong 262700, P.R. China, Department of Public Health, Shouguang People's Hospital, Shouguang, Shandong 262700, P.R. China
Published online on: October 9, 2020 https://doi.org/10.3892/etm.2020.9302
Article Number: 172
Copyright: © Li et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Non‑small cell lung cancer (NSCLC) is a malignant tumor, which presents with a high 5‑year mortality rate owing to the lack of an effective early screening tool and the absence of obvious early symptoms. MicroRNAs (miRs/miRNAs) have attracted increasing attention due to their significant clinical value in the diagnosis and prognosis of various human malignancies. The present study aimed to investigate the expression levels of microRNA (miR)‑1225‑5p in NSCLC and to analyze its prognostic value and biological role. The expression levels of miR‑1225‑5p in the tissues of patients with NSCLC and NSCLC cell lines were analyzed using reverse transcription‑quantitative PCR. The association between miR‑1225‑5p expression levels and the clinicopathological features of patients with NSCLC was analyzed using a χ² test. The prognostic value of miR‑1225‑5p in NSCLC was analyzed using both Kaplan Meier survival and Cox regression analyses, and the effects of miR‑1225‑5p on NSCLC cell proliferation, migration and invasion were examined. The results revealed that the expression levels of miR‑1225‑5p were significantly downregulated in NSCLC tissues compared with normal control tissues. Furthermore, miR‑1225‑5p was discovered to be a potential independent prognostic factor in NSCLC. The inhibition of miR‑1225‑5p in NSCLC cell lines led to increased cell proliferation, migration and invasion, whereas miR‑1225‑5p overexpression exerted the opposite effects in these cells. In conclusion, the findings of the present study indicated that the downregulated expression levels of miR‑1225‑5p in NSCLC may predict a poor prognosis in patients and suggested miR‑1225‑5p as a potential therapeutic target for NSCLC.

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