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Oridonin effectively reverses cisplatin drug resistance in human ovarian cancer cells via induction of cell apoptosis and inhibition of matrix metalloproteinase expression

  • Authors:
    • Shihong Ma
    • Wenhua Tan
    • Botao Du
    • Wei Liu
    • Weijia Li
    • Dehong Che
    • Guangmei Zhang

  • View Affiliations

  • Published online on: February 16, 2016     https://doi.org/10.3892/mmr.2016.4897
  • Pages: 3342-3348
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
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Abstract

Cisplatin is a first generation platinum‑based chemotherapeutic agent, however, the extensive application of cisplatin inevitably results in drug resistance, which is a major obstacle in cancer chemotherapy. The aim of the present study was to investigate the efficiency of reversing cisplatin‑resistance with the use of combination therapy with oridonin and cisplatin in human ovarian cancer cells, and attempt to reduce the side effects of the therapeutic agents when used alone. The half maximal inhibitory concentration (IC50) values of cisplatin were determined in cisplatin‑sensitive and cisplatin‑resistant ovarian cancer cells using an MTT assay. IC50 values of cisplatin in A2780, A2780/DDP, SKOV3 and SKOV3/DDP cells were significantly decreased in a time‑dependent manner. The antitumor effect of oridonin in A2780/DDP cells was also detected by the MTT assay and the inhibitory effects of oridonin increased in a dose‑ and time‑dependent manner. A2780/DDP cells were treated with 20 µM oridonin in combination with increasing concentrations of cisplatin for 48 h, and the result demonstrated that oridonin synergistically increased the antitumor effects of cisplatin in A2780/DDP cells. Notably, the combination treatment of oridonin and cisplatin effectively reversed cisplatin resistance and the IC50 values were significantly decreased from 50.97 µM and 135.20 to 26.12 µM and 73.00 µM in A2780/DDP and SKOV3/DDP cells at 48 h, respectively. Furthermore, oridonin induced cell apoptosis in a dose‑dependent manner and promoted cell‑cycle arrest at the G0/G1 phase in ovarian cancer cells. Oridonin and cisplatin synergistically increased the cell apoptosis rate of A2780/DDP cells, which was detected by fluorescence‑activated cell sorting analysis. Downregulated expression levels of Bcl‑2 and upregulated the expression of Bax protein were demonstrated by western blot analysis, further indicating increased apoptosis. In addition, the expression levels of matrix metalloproteinase (MMP)‑2 and MMP‑9 decreased in a dose‑dependent manner with oridonin treatment. The results from the present study demonstrated that oridonin exerted a synergistic effect with cisplatin to inhibit proliferation and induce cell apoptosis in cisplatin‑resistant ovarian cancer cells. Thus, combination therapy with oridonin and cisplatin effectively reversed cisplatin resistance in human ovarian cancer cells, which may have useful clinical applications.
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April-2016
Volume 13 Issue 4

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

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  • Journal Metrics
  • Impact Factor: 3.4
  • Ranked Medicine Research and Experimental
    (total number of cites)
  • CiteScore: 6.9
  • CiteScore Rank: Q2: #98/328 Biochemistry, Genetics and Molecular Biology
  • Source Normalized Impact per Paper (SNIP): 0.721
  • SCImago Journal Rank (SJR): 0.65
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Spandidos Publications style
Ma S, Tan W, Du B, Liu W, Li W, Che D and Zhang G: Oridonin effectively reverses cisplatin drug resistance in human ovarian cancer cells via induction of cell apoptosis and inhibition of matrix metalloproteinase expression. Mol Med Rep 13: 3342-3348, 2016
APA
Ma, S., Tan, W., Du, B., Liu, W., Li, W., Che, D., & Zhang, G. (2016). Oridonin effectively reverses cisplatin drug resistance in human ovarian cancer cells via induction of cell apoptosis and inhibition of matrix metalloproteinase expression. Molecular Medicine Reports, 13, 3342-3348. https://doi.org/10.3892/mmr.2016.4897
MLA
Ma, S., Tan, W., Du, B., Liu, W., Li, W., Che, D., Zhang, G."Oridonin effectively reverses cisplatin drug resistance in human ovarian cancer cells via induction of cell apoptosis and inhibition of matrix metalloproteinase expression". Molecular Medicine Reports 13.4 (2016): 3342-3348.
Chicago
Ma, S., Tan, W., Du, B., Liu, W., Li, W., Che, D., Zhang, G."Oridonin effectively reverses cisplatin drug resistance in human ovarian cancer cells via induction of cell apoptosis and inhibition of matrix metalloproteinase expression". Molecular Medicine Reports 13, no. 4 (2016): 3342-3348. https://doi.org/10.3892/mmr.2016.4897