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Article

Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways

  • Authors:
    • Yasuhiro Yamamoto
    • Hiromi Koma
    • Hiroki Hiramatsu
    • Misa Abe
    • Kazunori Murakami
    • Asako Ohya
    • Tatsurou Yagami
  • View Affiliations / Copyright

    Affiliations: Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo 670‑8524, Japan
  • Pages: 292-296
    |
    Published online on: December 24, 2013
       https://doi.org/10.3892/mco.2013.234
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Abstract

Renal cell carcinoma (RCC) is characterized by diverse clinical manifestations, few early warning signs and a resistance to radiotherapy and chemotherapy. Although several clinical trials have investigated potential effective therapeutic strategies for RCC, the chemoresistance of RCC has not yet been overcome. An endogenous ligand for the peroxisome proliferator‑activated receptor‑γ (PPARγ), 15‑deoxy‑Δ12,14‑prostaglandin J2 (15d‑PGJ2), was shown to induce apoptosis in RCC. The aim of the present study was to investigate the synergistic effects of carcinostatics on the antitumor activity of 15d‑PGJ2 in the Caki‑2 human RCC cell line with the MTT assay. Our results demonstrated that the topoisomerase‑II inhibitor etoposide (VP‑16) exhibited cytotoxic effects synergistically with 15d‑PGJ2. Furthermore, the presence of the PPARγ antagonist GW9662 did not protect Caki‑2 cells against 15d‑PGJ2‑induced cytotoxicity. Additionally, it was observed that the combined treatment of VP‑16 and 15d‑PGJ2 activated caspase‑3 more efficiently compared to each treatment alone. Therefore, the combined treatment with 15d‑PGJ2 and VP‑16 exhibited synergistic antitumor activity independently of PPARγ.
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Copy and paste a formatted citation
Spandidos Publications style
Yamamoto Y, Koma H, Hiramatsu H, Abe M, Murakami K, Ohya A and Yagami T: Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways. Mol Clin Oncol 2: 292-296, 2014.
APA
Yamamoto, Y., Koma, H., Hiramatsu, H., Abe, M., Murakami, K., Ohya, A., & Yagami, T. (2014). Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways. Molecular and Clinical Oncology, 2, 292-296. https://doi.org/10.3892/mco.2013.234
MLA
Yamamoto, Y., Koma, H., Hiramatsu, H., Abe, M., Murakami, K., Ohya, A., Yagami, T."Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways". Molecular and Clinical Oncology 2.2 (2014): 292-296.
Chicago
Yamamoto, Y., Koma, H., Hiramatsu, H., Abe, M., Murakami, K., Ohya, A., Yagami, T."Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways". Molecular and Clinical Oncology 2, no. 2 (2014): 292-296. https://doi.org/10.3892/mco.2013.234
Copy and paste a formatted citation
x
Spandidos Publications style
Yamamoto Y, Koma H, Hiramatsu H, Abe M, Murakami K, Ohya A and Yagami T: Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways. Mol Clin Oncol 2: 292-296, 2014.
APA
Yamamoto, Y., Koma, H., Hiramatsu, H., Abe, M., Murakami, K., Ohya, A., & Yagami, T. (2014). Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways. Molecular and Clinical Oncology, 2, 292-296. https://doi.org/10.3892/mco.2013.234
MLA
Yamamoto, Y., Koma, H., Hiramatsu, H., Abe, M., Murakami, K., Ohya, A., Yagami, T."Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways". Molecular and Clinical Oncology 2.2 (2014): 292-296.
Chicago
Yamamoto, Y., Koma, H., Hiramatsu, H., Abe, M., Murakami, K., Ohya, A., Yagami, T."Treatment of etoposide combined with 15-deoxy‑∆12,14‑prostaglandin J2 exerted synergistic antitumor effects against renal cell carcinoma via peroxisome proliferator‑activated receptor‑γ‑independent pathways". Molecular and Clinical Oncology 2, no. 2 (2014): 292-296. https://doi.org/10.3892/mco.2013.234
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