Curcumin induces autophagy, inhibits proliferation and invasion by downregulating AKT/mTOR signaling pathway in human melanoma cells

  • Authors:
    • Guangming Zhao
    • Xiaodong Han
    • Siwen Zheng
    • Zhen Li
    • Yang Sha
    • Jing Ni
    • Zhe Sun
    • Song Qiao
    • Zhiqi Song
  • View Affiliations

  • Published online on: November 12, 2015     https://doi.org/10.3892/or.2015.4413
  • Pages: 1065-1074
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Abstract

Melanoma is the foremost malignant cutaneous cancer and it is extremely resistant to chemotherapy and radiotherapy. Curcumin is an active component of turmeric, the yellow spice derived from the rhizome of Curcuma longa, and is widely known for its anti-inflammatory and anti-cancerogenic properties. Several recent studies suggest that curcumin induces apoptosis by modulating multiple signaling pathways to exert its anticancer effect. In the present study, we investigated the effect of curcumin on the viability, invasion potential, cell cycle, autophagy and the AKT, mTOR, P70S6K proteins of AKT/mTOR signaling pathway in human melanoma A375 and C8161 cell lines in vitro and in an in vivo tumorigenesis model. Curcumin effectively inhibited the proliferation of melanoma cells in vitro and in vivo. It suppressed cell invasion, arrested the cancer cells at G2/M phase of the cell cycle, and induced autophagy. Furthermore, curcumin suppressed the activation of AKT, mTOR and P70S6K proteins. Curcumin, therefore, is a potent suppressor of cell viability and invasion, and simultaneously an inducer of autophagy in A375 and C8161 cells. Accordingly, curcumin could be a novel therapeutic candidate for the management of melanoma.
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February-2016
Volume 35 Issue 2

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

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Spandidos Publications style
Zhao G, Han X, Zheng S, Li Z, Sha Y, Ni J, Sun Z, Qiao S and Song Z: Curcumin induces autophagy, inhibits proliferation and invasion by downregulating AKT/mTOR signaling pathway in human melanoma cells. Oncol Rep 35: 1065-1074, 2016.
APA
Zhao, G., Han, X., Zheng, S., Li, Z., Sha, Y., Ni, J. ... Song, Z. (2016). Curcumin induces autophagy, inhibits proliferation and invasion by downregulating AKT/mTOR signaling pathway in human melanoma cells. Oncology Reports, 35, 1065-1074. https://doi.org/10.3892/or.2015.4413
MLA
Zhao, G., Han, X., Zheng, S., Li, Z., Sha, Y., Ni, J., Sun, Z., Qiao, S., Song, Z."Curcumin induces autophagy, inhibits proliferation and invasion by downregulating AKT/mTOR signaling pathway in human melanoma cells". Oncology Reports 35.2 (2016): 1065-1074.
Chicago
Zhao, G., Han, X., Zheng, S., Li, Z., Sha, Y., Ni, J., Sun, Z., Qiao, S., Song, Z."Curcumin induces autophagy, inhibits proliferation and invasion by downregulating AKT/mTOR signaling pathway in human melanoma cells". Oncology Reports 35, no. 2 (2016): 1065-1074. https://doi.org/10.3892/or.2015.4413