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Article

Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy

  • Authors:
    • Li-Di Zhang
    • Zhen Liu
    • Hua Liu
    • Dong-Mei Ran
    • Jia-Hui Guo
    • Bin Jiang
    • Ying-Li Wu
    • Feng-Hou Gao
  • View Affiliations / Copyright

    Affiliations: Institute of Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China, Department of Gastroenterology, The Tenth Hospital Affiliated to Tongji University, Shanghai 200072, P.R. China, Department of Pathology, The Sixth People's Hospital of Zhengzhou City, Zhengzhou, Henan 450015, P.R. China, Hongqiao International Institute of Medicine, Shanghai Tongren Hospital/Faculty of Basic Medicine, Chemical Biology Division of Shanghai Universities E-Institutes, Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China
  • Pages: 657-665
    |
    Published online on: June 3, 2016
       https://doi.org/10.3892/ijo.2016.3557
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Abstract

The aberrant activation of PI3K/Akt/mTOR signaling pathway plays an important role in the oncogenesis, prognosis and chemotherapy resistance of neuroblastoma. However, NVP-BEZ235, a potent dual PI3K and mTOR inhibitor have not shown beneficial effects on neuroblastoma especially in terms of apoptosis induction as a single agent. We therefore attempted to explore an effective combination regimen to enhance the anticancer activity of NVP-BEZ235. Interestingly, we found that oridonin, a natural biologically active compound extracted from the Chinese medicinal herb Rabdosia rubescens, combined with NVP-BEZ235 markedly induced apoptosis of neuroblastoma cells. Notably, the synergistic activation of the apoptotic pathway was accompanied with enhanced autophagy as evidenced by significant decreased p62 expression as well as upregulated conversion of LC3-II. Suppression of the Beclin-1, a core component of the autophagy machinery, by means of shRNA resulted in diminished synergistic antitumor effect. Furthermore, the co-treatment with oridonin and NVP-BEZ235 was also much more effective than either agent alone in inhibiting the growth of neuroblastoma xenografts and in inducing tumor cells apoptosis. Taken together, our results suggest that the combination of NVP-BEZ235 and oridonin is a novel and potential strategy for neuroblastoma therapy.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang L, Liu Z, Liu H, Ran D, Guo J, Jiang B, Wu Y and Gao F: Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy. Int J Oncol 49: 657-665, 2016.
APA
Zhang, L., Liu, Z., Liu, H., Ran, D., Guo, J., Jiang, B. ... Gao, F. (2016). Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy. International Journal of Oncology, 49, 657-665. https://doi.org/10.3892/ijo.2016.3557
MLA
Zhang, L., Liu, Z., Liu, H., Ran, D., Guo, J., Jiang, B., Wu, Y., Gao, F."Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy". International Journal of Oncology 49.2 (2016): 657-665.
Chicago
Zhang, L., Liu, Z., Liu, H., Ran, D., Guo, J., Jiang, B., Wu, Y., Gao, F."Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy". International Journal of Oncology 49, no. 2 (2016): 657-665. https://doi.org/10.3892/ijo.2016.3557
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang L, Liu Z, Liu H, Ran D, Guo J, Jiang B, Wu Y and Gao F: Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy. Int J Oncol 49: 657-665, 2016.
APA
Zhang, L., Liu, Z., Liu, H., Ran, D., Guo, J., Jiang, B. ... Gao, F. (2016). Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy. International Journal of Oncology, 49, 657-665. https://doi.org/10.3892/ijo.2016.3557
MLA
Zhang, L., Liu, Z., Liu, H., Ran, D., Guo, J., Jiang, B., Wu, Y., Gao, F."Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy". International Journal of Oncology 49.2 (2016): 657-665.
Chicago
Zhang, L., Liu, Z., Liu, H., Ran, D., Guo, J., Jiang, B., Wu, Y., Gao, F."Oridonin enhances the anticancer activity of NVP-BEZ235 against neuroblastoma cells in vitro and in vivo through autophagy". International Journal of Oncology 49, no. 2 (2016): 657-665. https://doi.org/10.3892/ijo.2016.3557
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