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Article

miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells

  • Authors:
    • Hui Wang
    • Ying Zhang
    • Qian Wu
    • Yong-Bin Wang
    • Wei Wang
  • View Affiliations / Copyright

    Affiliations: Department of Respiratory Medicine, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
  • Pages: 247-254
    |
    Published online on: November 9, 2017
       https://doi.org/10.3892/or.2017.6088
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Abstract

Autophagy is critical for the metastasis of cancer cells through induction of epithelial-to-mesenchymal transition (EMT). Activation of TGF-β signaling plays a key role in regulating autophagy. miR-16 may be associated with non-small cell lung carcinoma (NSCLC) progression. However, the role of miR-16 in NSCLC cell autophagy in the presence of TGF-β and the underlying mechanism are still unclear. To test whether miR-16 targets ATG3 which is involved in autophagy of NSCLC cells, we studied the expression levels of miR-16 and ATG3 in NSCLC patients, verified the targeting of ATG3 by miR-16 by luciferase reporter gene system, and investigated the role of miR-16 in the autophagy of NSCLC cells. Results revealed that miR-16 was significantly downregulated, and ATG3 was significantly upregulated in NSCLC patient tissue samples. ATG3 was found to be a direct target of miR-16. TGF-β1 significantly downregulated the expression of miR-16 and ATG3 mRNA. Using transmission electron microscopy, we observed that TGF-β1 treatment reduced autophagosomes in the A549 cells, and miR-16 mimics increased the autophagosomes in the presence of TGF-β1. Acridine orange (AO) staining and expression of LC3B II/I and p62 confirmed the inhibition of autophagy by TGF-β1, and the recovery of TGF-β1-mediated inhibition of autophagy by miR-16 mimics. Finally, miR-16 mimics inhibited TGF-β1-induced EMT, and this effect was attenuated by autophagy inhibitor 3-MA. Taken together, miR-16 mimics inhibited TGF-β1-induced EMT via activation of autophagy.
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Copy and paste a formatted citation
Spandidos Publications style
Wang H, Zhang Y, Wu Q, Wang Y and Wang W: miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells. Oncol Rep 39: 247-254, 2018.
APA
Wang, H., Zhang, Y., Wu, Q., Wang, Y., & Wang, W. (2018). miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells. Oncology Reports, 39, 247-254. https://doi.org/10.3892/or.2017.6088
MLA
Wang, H., Zhang, Y., Wu, Q., Wang, Y., Wang, W."miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells". Oncology Reports 39.1 (2018): 247-254.
Chicago
Wang, H., Zhang, Y., Wu, Q., Wang, Y., Wang, W."miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells". Oncology Reports 39, no. 1 (2018): 247-254. https://doi.org/10.3892/or.2017.6088
Copy and paste a formatted citation
x
Spandidos Publications style
Wang H, Zhang Y, Wu Q, Wang Y and Wang W: miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells. Oncol Rep 39: 247-254, 2018.
APA
Wang, H., Zhang, Y., Wu, Q., Wang, Y., & Wang, W. (2018). miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells. Oncology Reports, 39, 247-254. https://doi.org/10.3892/or.2017.6088
MLA
Wang, H., Zhang, Y., Wu, Q., Wang, Y., Wang, W."miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells". Oncology Reports 39.1 (2018): 247-254.
Chicago
Wang, H., Zhang, Y., Wu, Q., Wang, Y., Wang, W."miR-16 mimics inhibit TGF-β1-induced epithelial-to-mesenchymal transition via activation of autophagy in non-small cell lung carcinoma cells". Oncology Reports 39, no. 1 (2018): 247-254. https://doi.org/10.3892/or.2017.6088
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