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Article

Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway

  • Authors:
    • Shenglei Li
    • Xin Li
    • Huasi Zhao
    • Ming Gao
    • Feng Wang
    • Wencai Li
  • View Affiliations / Copyright

    Affiliations: Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China, Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China, Department of Respiratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
  • Pages: 5482-5486
    |
    Published online on: July 3, 2015
       https://doi.org/10.3892/mmr.2015.4038
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Abstract

MicroRNAs (miRs) are a family of small non-coding RNAs that are 21‑24 nucleotides in length. Decreased expression of hsa‑miR‑125a‑3p is observed in a number of patients with non‑small cell lung cancer; however, it is not clear how this miRNA regulates the growth and invasion of lung tumor cells. The aim of the present study was to identify the function of hsa‑miR‑125a‑3p in the growth and invasion of lung cancer cells. The expression of hsa‑miR‑125a‑3p in the A549, NCI‑H460 and SPCA‑1 lung cancer cell lines was analyzed by reverse transcription‑quantitative polymerase chain reaction and the human bronchiolar epithelium cell line (HBE) was used as a control. The results demonstrated that the expression of hsa‑miR‑125a‑3p was significantly lower in NCI‑H460, A549 and SPCA‑1 cells, compared with that in HBE cells. Overexpression of sense miR‑125a‑3p in the A549 lung cancer cell line inhibited cell proliferation for 5‑7 days (P<0.01), and transfection of antisense miR‑125a‑3p did not suppress the cell growth of the lung cancer cells. In addition, overexpression of miR‑125a‑3p in the NCI‑H460 lung cancer cell line markedly induced cell apoptosis, which was detected by fluorescence‑activated cell sorting with annexin V‑fluorescein isothiocyanate/propidium iodide staining. The results of the Transwell migration assay also revealed that transfection of miR‑125a‑3p resulted in decreased migration of lung cancer tumor cells. The pro‑apoptotic gene p53 expression was detected by western blot analysis. The results revealed that the expression of mouse double minute (MDM)‑2 homolog, the principal cellular antagonist of p53, was decreased and p53 expression was upregulated in sense has‑miR‑125a‑3p transfected A549 cells. This was consistent with that observed in NCI‑H460 cells, suggesting that hsa‑miR‑125a‑3p may be involved in the regulation of the MDM2/p53 signaling pathway in lung cancer cells. In conclusion, overexpression of hsa‑miR‑125a‑3p significantly inhibited the proliferation and invasion of lung cancer cells, which may aid in determining the mechanisms underlying the development of lung cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Li S, Li X, Zhao H, Gao M, Wang F and Li W: Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway. Mol Med Rep 12: 5482-5486, 2015.
APA
Li, S., Li, X., Zhao, H., Gao, M., Wang, F., & Li, W. (2015). Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway. Molecular Medicine Reports, 12, 5482-5486. https://doi.org/10.3892/mmr.2015.4038
MLA
Li, S., Li, X., Zhao, H., Gao, M., Wang, F., Li, W."Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway". Molecular Medicine Reports 12.4 (2015): 5482-5486.
Chicago
Li, S., Li, X., Zhao, H., Gao, M., Wang, F., Li, W."Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway". Molecular Medicine Reports 12, no. 4 (2015): 5482-5486. https://doi.org/10.3892/mmr.2015.4038
Copy and paste a formatted citation
x
Spandidos Publications style
Li S, Li X, Zhao H, Gao M, Wang F and Li W: Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway. Mol Med Rep 12: 5482-5486, 2015.
APA
Li, S., Li, X., Zhao, H., Gao, M., Wang, F., & Li, W. (2015). Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway. Molecular Medicine Reports, 12, 5482-5486. https://doi.org/10.3892/mmr.2015.4038
MLA
Li, S., Li, X., Zhao, H., Gao, M., Wang, F., Li, W."Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway". Molecular Medicine Reports 12.4 (2015): 5482-5486.
Chicago
Li, S., Li, X., Zhao, H., Gao, M., Wang, F., Li, W."Overexpression of microRNA‑125a‑3p effectively inhibits the cell growth and invasion of lung cancer cells by regulating the mouse double minute 2 homolog/p53 signaling pathway". Molecular Medicine Reports 12, no. 4 (2015): 5482-5486. https://doi.org/10.3892/mmr.2015.4038
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