miR‑433 accelerates acquired chemoresistance of gallbladder cancer cells by targeting cyclin M

  • Authors:
    • Jianhua Yu
    • Weiguang Zhang
    • Baochun Lu
    • Hongwei Qian
    • Haijun Tang
    • Zhiyang Zhu
    • Xinggui Yuan
    • Peitu Ren
  • View Affiliations

  • Published online on: December 28, 2017     https://doi.org/10.3892/ol.2017.7708
  • Pages: 3305-3312
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Abstract

Resistance to chemotherapy is associated with dismal prognosis in patients with gallbladder cancer. Cyclin‑dependent kinase 10 (CDK10) influences the chemosensitivity of gallbladder cancer cells, and cyclin M is the activating factor and binding partner of CDK10. To determine the effect of CDK10 or cyclin M overexpression on chemosensitivity, gemcitabine‑resistant (GR) subclones were established from CDK10 or cyclin M stable transfectants. Stable overexpression of CDK10 increased the sensitivity to gemcitabine in non‑resistant cells and did not further increase the sensitivity to gemcitabine in the GR subclones. GR subclones exhibited a significantly decreased expression of cyclin M while maintaining the expression levels of CDK10, compared with the non‑resistant cells. MicroRNA (miR)‑433 was identified as a candidate factor involved in the mechanism of the downregulation of M cyclin in GR subclones. Luciferase assays confirmed the interaction between miR‑433 and the 3' untranslated region (3'UTR) of cyclin M. Additionally, ectopic expression of miR‑433 significantly decreased the expression of cyclin M. Finally, increased expression of circulating miR‑433 was associated with poor outcome of chemotherapy. The results of the present study suggest that miR‑433 is a potential biomarker for evaluating chemosensitivity in gallbladder cancer.
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March-2018
Volume 15 Issue 3

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

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Spandidos Publications style
Yu J, Zhang W, Lu B, Qian H, Tang H, Zhu Z, Yuan X and Ren P: miR‑433 accelerates acquired chemoresistance of gallbladder cancer cells by targeting cyclin M. Oncol Lett 15: 3305-3312, 2018
APA
Yu, J., Zhang, W., Lu, B., Qian, H., Tang, H., Zhu, Z. ... Ren, P. (2018). miR‑433 accelerates acquired chemoresistance of gallbladder cancer cells by targeting cyclin M. Oncology Letters, 15, 3305-3312. https://doi.org/10.3892/ol.2017.7708
MLA
Yu, J., Zhang, W., Lu, B., Qian, H., Tang, H., Zhu, Z., Yuan, X., Ren, P."miR‑433 accelerates acquired chemoresistance of gallbladder cancer cells by targeting cyclin M". Oncology Letters 15.3 (2018): 3305-3312.
Chicago
Yu, J., Zhang, W., Lu, B., Qian, H., Tang, H., Zhu, Z., Yuan, X., Ren, P."miR‑433 accelerates acquired chemoresistance of gallbladder cancer cells by targeting cyclin M". Oncology Letters 15, no. 3 (2018): 3305-3312. https://doi.org/10.3892/ol.2017.7708