Open Access

miR‑221‑3p promotes the cell growth of non‑small cell lung cancer by targeting p27

  • Authors:
    • Guoqing Yin
    • Bo Zhang
    • Jia Li
  • View Affiliations

  • Published online on: May 23, 2019     https://doi.org/10.3892/mmr.2019.10291
  • Pages: 604-612
  • Copyright: © Yin et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Emerging evidence suggests the critical function of microRNAs in regulating the growth of cancer cells. In the present study, it was demonstrated that miR‑221‑3p was overexpressed in non‑small cell lung cancer (NSCLC) tissues and cell lines compared with that noted in the normal controls. Downregulation of miR‑221‑3p suppressed the proliferation, colony formation and invasion of NSCLC cells. To further understand the molecular mechanisms underlying the potential oncogenic function of miR‑221‑3p in NSCLC, the downstream targets of miR‑221‑3p were predicted using bioinformatic databases. The prediction suggested the cell cycle regulator p27 as one of the targets of miR‑221‑3p. Molecular experiments showed that miR‑221‑3p was able to bind with the 3'‑untranslated region (UTR) of p27 and decreased the expression of p27 in NSCLC cells. Consistent with the suppressive role of p27 in controlling cell cycle progression, overexpression of miR‑221‑3p decreased the expression of p27 and promoted cell cycle progression from G1 to S phase. Collectively, our findings identified miR‑221‑3p as a novel regulator of NSCLC cell growth via modulating the expression of p27.
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July-2019
Volume 20 Issue 1

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Copy and paste a formatted citation
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Spandidos Publications style
Yin G, Zhang B and Li J: miR‑221‑3p promotes the cell growth of non‑small cell lung cancer by targeting p27. Mol Med Rep 20: 604-612, 2019.
APA
Yin, G., Zhang, B., & Li, J. (2019). miR‑221‑3p promotes the cell growth of non‑small cell lung cancer by targeting p27. Molecular Medicine Reports, 20, 604-612. https://doi.org/10.3892/mmr.2019.10291
MLA
Yin, G., Zhang, B., Li, J."miR‑221‑3p promotes the cell growth of non‑small cell lung cancer by targeting p27". Molecular Medicine Reports 20.1 (2019): 604-612.
Chicago
Yin, G., Zhang, B., Li, J."miR‑221‑3p promotes the cell growth of non‑small cell lung cancer by targeting p27". Molecular Medicine Reports 20, no. 1 (2019): 604-612. https://doi.org/10.3892/mmr.2019.10291