Time-staggered inhibition of JNK effectively sensitizes chemoresistant ovarian cancer cells to cisplatin and paclitaxel

  • Authors:
    • Manabu Seino
    • Masashi Okada
    • Hirotsugu Sakaki
    • Hiroyuki Takeda
    • Hikaru Watarai
    • Shuhei Suzuki
    • Shizuka Seino
    • Kenta Kuramoto
    • Tsuyoshi Ohta
    • Satoru Nagase
    • Hirohisa Kurachi
    • Chifumi Kitanaka
  • View Affiliations

  • Published online on: November 2, 2015     https://doi.org/10.3892/or.2015.4377
  • Pages: 593-601
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Ovarian cancer is the most lethal gynecological malignancy, for which platinum- and taxane-based chemotherapy plays a major role. Chemoresistance of ovarian cancer poses a major obstacle to the successful management of this devastating disease; however, effective measures to overcome platinum and taxane resistance are yet to be established. In the present study, while investigating the mechanism underlying the chemoresistance of ovarian cancer, we found that JNK may have a key role in the resistance of ovarian cancer cells to cisplatin and paclitaxel. Importantly, whereas simultaneous application of a JNK inhibitor and either of the chemotherapeutic agents had contrasting effects for cisplatin (enhanced cytotoxicity) and paclitaxel (decreased cytotoxicity), JNK inhibitor treatment prior to chemotherapeutic agent application invariably enhanced the cytotoxicity of both drugs, suggesting that the basal JNK activity is commonly involved in the chemoresistance of ovarian cancer cells to cisplatin and paclitaxel in contrast to drug‑induced JNK activity which may have different roles for these two drugs. Furthermore, we confirmed using non-transformed human and rodent fibroblasts that sequential application of the JNK inhibitor and the chemotherapeutic agents did not augment their toxicity. Thus, our findings highlight for the first time the possible differential roles of the basal and induced JNK activities in the chemoresistance of ovarian cancer cells and also suggest that time‑staggered JNK inhibition may be a rational and promising strategy to overcome the resistance of ovarian cancer to platinum- and taxane-based chemotherapy.
View Figures
View References

Related Articles

Journal Cover

January-2016
Volume 35 Issue 1

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
Seino M, Okada M, Sakaki H, Takeda H, Watarai H, Suzuki S, Seino S, Kuramoto K, Ohta T, Nagase S, Nagase S, et al: Time-staggered inhibition of JNK effectively sensitizes chemoresistant ovarian cancer cells to cisplatin and paclitaxel. Oncol Rep 35: 593-601, 2016
APA
Seino, M., Okada, M., Sakaki, H., Takeda, H., Watarai, H., Suzuki, S. ... Kitanaka, C. (2016). Time-staggered inhibition of JNK effectively sensitizes chemoresistant ovarian cancer cells to cisplatin and paclitaxel. Oncology Reports, 35, 593-601. https://doi.org/10.3892/or.2015.4377
MLA
Seino, M., Okada, M., Sakaki, H., Takeda, H., Watarai, H., Suzuki, S., Seino, S., Kuramoto, K., Ohta, T., Nagase, S., Kurachi, H., Kitanaka, C."Time-staggered inhibition of JNK effectively sensitizes chemoresistant ovarian cancer cells to cisplatin and paclitaxel". Oncology Reports 35.1 (2016): 593-601.
Chicago
Seino, M., Okada, M., Sakaki, H., Takeda, H., Watarai, H., Suzuki, S., Seino, S., Kuramoto, K., Ohta, T., Nagase, S., Kurachi, H., Kitanaka, C."Time-staggered inhibition of JNK effectively sensitizes chemoresistant ovarian cancer cells to cisplatin and paclitaxel". Oncology Reports 35, no. 1 (2016): 593-601. https://doi.org/10.3892/or.2015.4377