Aberrant expression of miR‑4728 in patients with non‑small cell lung cancer and its regulatory effects on tumor progression in tumor cells
- Ying Hu
- Xinfang Zhang
- Cuixue Gong
- Jianzhao Li
Affiliations: Department of Blood Transfusion, Qilu Hospital Huantai Branch, Zibo, Shandong 256400, P.R. China, Clinical Laboratory, Qilu Hospital Huantai Branch, Zibo, Shandong 256400, P.R. China, Outpatient Dressing Room, Zibo Central Hospital, Zibo, Shandong 255000, P.R. China, Department of Pathology, Zibo Central Hospital, Zibo, Shandong 255000, P.R. China
- Published online on: August 26, 2020 https://doi.org/10.3892/etm.2020.9141
Copyright: © Hu
et al. This is an open access article distributed under the
terms of Creative
Commons Attribution License.
Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )
This article is mentioned in:
Non‑small cell lung cancer (NSCLC) is a common malignant tumor with poor prognosis and an increasing number of cases. MicroRNA (miR)‑4728 is related with the progression of various types of cancer, and is dysregulated in NSCLC, which indicates that miR‑4728 may serve as a biomarker for NSCLC. The present study aimed to investigate the clinical significance of miR‑4728 in NSCLC diagnosis and prognosis, and to explore the biological function of miR‑4728 in NSCLC progression. Serum and tissue samples were collected from 122 patients with NSCLC. By conducting reverse transcription‑quantitative PCR, the Cell Counting Kit‑8 assay and Transwell assays, the expression of miR‑4728 and its effect on NSCLC cell proliferation, migration and invasion were investigated. The diagnostic value of miR‑4728 was evaluated by plotting a receiver operating characteristic curve, and Kaplan‑Meier and Cox regression analyses were conducted to assess the prognostic value of miR‑4728. miR‑4728 was significantly downregulated in NSCLC serum and tissue samples compared with healthy controls, with a relatively high diagnostic accuracy and ability to predict poor overall survival time in patients with NSCLC. By conducting gain‑ and loss‑of‑function experiments, the results indicated that miR‑4728 knockdown significantly promoted NSCLC cell proliferation, migration and invasion compared with the inhibitor negative control (NC) group. By contrast, miR‑4728 overexpression displayed the opposite effect on NSCLC cell proliferation, migration and invasion. The present study indicated that miR‑4728 was downregulated in NSCLC and may serve as a candidate diagnostic and prognostic biomarker. NSCLC cell proliferation, migration and invasion were inhibited by miR‑4728 overexpression compared with the mimic NC group, which suggested that miR‑4728 may serve as a therapeutic target for NSCLC.