Anticancer effect of miR-96 inhibitor in bladder cancer cell lines

  • Authors:
    • Ting Xu
    • Xiao‑Wen Du
    • Jun‑Biao Hu
    • Yong‑Feng Zhu
    • Hui‑Ling Wu
    • Guo‑Ping Dai
    • Yao‑Min Shu
    • Jun Ouyang
  • View Affiliations

  • Published online on: January 8, 2018     https://doi.org/10.3892/ol.2018.7745
  • Pages: 3814-3819
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Abstract

The present study aimed to investigate the role of microRNA-96 (miR-96) in the proliferation, invasion and apoptosis of bladder cancer cell lines, and the associated mechanisms. The expression of miR‑96 and human ether‑à‑go‑go‑related (HERG1) potassium channel in the normal uroepithelium SV‑HUC‑1 cell line, and bladder cancer T24 and 5637 cell lines were examined using reverse transcription‑ polymerase chain reaction or/and western blotting. Transfection with miR‑96 inhibitor or scrambled control (SC) was used to study the biological activities of miR‑96 in bladder cancer cell lines. MTT, flow cytometric and Transwell assays were applied to detect cell viability, apoptosis and invasion, respectively. A dual‑luciferase reporter assay was applied to determine the association between miR‑96 and HERG1 expression. As demonstrated, miR‑96 was highly expressed in the two bladder cancer cell lines, particularly in T24 cells. Following transfection with miR‑96 inhibitor, miR‑96 expression was significantly reduced in the T24 cell line, compared with SC. The miR‑96 inhibitor suppressed cell proliferation and invasion, promoted apoptosis and arrested the cell cycle at the G1 phase. Consistently, HERG1 was also highly expressed in the two bladder cancer cell lines at the mRNA and protein level, but not in the normal uroepithelium cell line. The miR‑96 inhibitor also significantly decreased HERG1 expression compared with SC. The results of the dual‑luciferase reporter assay indicated that miR‑96 directly targeted wild‑type HERG1. In conclusion, miR‑96 inhibitor exhibited anticancer effects on bladder cancer cells by inhibiting proliferation and invasion of cells, and promoting their apoptosis. HERG1 was an important target of miR‑96. These results provided experimental evidence supporting miR‑96 as a therapeutic target for patients with bladder cancer.
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March-2018
Volume 15 Issue 3

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Copy and paste a formatted citation
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Spandidos Publications style
Xu T, Du XW, Hu JB, Zhu YF, Wu HL, Dai GP, Shu YM and Ouyang J: Anticancer effect of miR-96 inhibitor in bladder cancer cell lines. Oncol Lett 15: 3814-3819, 2018
APA
Xu, T., Du, X., Hu, J., Zhu, Y., Wu, H., Dai, G. ... Ouyang, J. (2018). Anticancer effect of miR-96 inhibitor in bladder cancer cell lines. Oncology Letters, 15, 3814-3819. https://doi.org/10.3892/ol.2018.7745
MLA
Xu, T., Du, X., Hu, J., Zhu, Y., Wu, H., Dai, G., Shu, Y., Ouyang, J."Anticancer effect of miR-96 inhibitor in bladder cancer cell lines". Oncology Letters 15.3 (2018): 3814-3819.
Chicago
Xu, T., Du, X., Hu, J., Zhu, Y., Wu, H., Dai, G., Shu, Y., Ouyang, J."Anticancer effect of miR-96 inhibitor in bladder cancer cell lines". Oncology Letters 15, no. 3 (2018): 3814-3819. https://doi.org/10.3892/ol.2018.7745