Expression of miR-136 is associated with the primary cisplatin resistance of human epithelial ovarian cancer

  • Authors:
    • Henan Zhao
    • Sha Liu
    • Guang Wang
    • Xian Wu
    • Yanfang Ding
    • Gordon Guo
    • Jiyong Jiang
    • Shiying Cui
  • View Affiliations

  • Published online on: December 2, 2014     https://doi.org/10.3892/or.2014.3640
  • Pages: 591-598
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

MicroRNAs (miRNAs) are involved in regulating the response of cancer cells to various therapeutic interventions, yet their involvement in the chemoresistance of human epithelial ovarian cancer is not fully understood. We found that miR-136 was significantly downregulated in specimens from patients with chemoresistant epithelial ovarian cancer. In the present study, we aimed to clarify the role of miR-136 in regulating the chemoresistance of ovarian cancer. Thirty-four tumor bank specimens and 2 well-established human ovarian cancer cell lines, C13 and OV2008, were used. We found that miR-136 expression was significantly reduced in primary platinum-resistant patients and the ovarian cancer OVC cell line. Enforced expression of miR-136 decreased the chemoresistance to cisplatin in OVC cells through inhibition of cell survival. In addition, we found no association between miR-136 and migration or invasion potential in the ovarian cancer cell lines. However, in the platinum-resistant C13 cell line, the overexpression of miR-136 markedly promoted an apoptotic response to cisplatin. Furthermore, the levels of adducts corrected with their extent of DNA damage/repair, in terms of the percentage of DNA in comet tails, tail length, tail moment (TM), and olive tail moment (OTM), revealed that miR-136 is essential for the repair of cisplatin-induced DNA damage. Our findings suggest that miR-136 may function as an anti-oncogene and deficiency of miR-136 expression in ovarian cancer can induce chemoresistance at least in part by downregulating apoptosis and promoting the repair of cisplatin-induced DNA damage. Thus, miR-136 may provide a biomarker for predicting the chemosensitivity to cisplatin in patients with epithelial ovarian cancer.
View Figures
View References

Related Articles

Journal Cover

February-2015
Volume 33 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Zhao H, Liu S, Wang G, Wu X, Ding Y, Guo G, Jiang J and Cui S: Expression of miR-136 is associated with the primary cisplatin resistance of human epithelial ovarian cancer. Oncol Rep 33: 591-598, 2015.
APA
Zhao, H., Liu, S., Wang, G., Wu, X., Ding, Y., Guo, G. ... Cui, S. (2015). Expression of miR-136 is associated with the primary cisplatin resistance of human epithelial ovarian cancer. Oncology Reports, 33, 591-598. https://doi.org/10.3892/or.2014.3640
MLA
Zhao, H., Liu, S., Wang, G., Wu, X., Ding, Y., Guo, G., Jiang, J., Cui, S."Expression of miR-136 is associated with the primary cisplatin resistance of human epithelial ovarian cancer". Oncology Reports 33.2 (2015): 591-598.
Chicago
Zhao, H., Liu, S., Wang, G., Wu, X., Ding, Y., Guo, G., Jiang, J., Cui, S."Expression of miR-136 is associated with the primary cisplatin resistance of human epithelial ovarian cancer". Oncology Reports 33, no. 2 (2015): 591-598. https://doi.org/10.3892/or.2014.3640