Toxicarioside O induces protective autophagy in a sirtuin-1-dependent manner in colorectal cancer cells.
Toxicarioside O induces protective autophagy in a sirtuin-1-dependent manner in colorectal cancer cells.
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Toxicarioside O 在结直肠癌细胞中以 Sirtuin-1 依赖性方式诱导保护性自噬
DOI:
10.18632/oncotarget.17189
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发表时间:
2017-08-08
期刊:
影响因子:
--
通讯作者:
Huang C
中科院分区:
文献类型:
--
作者:
Huang YH;Sun Y;Huang FY;Li YN;Wang CC;Mei WL;Dai HF;Tan GH;Huang C
Colorectal cancer is the most common cancer. It has high morbidity and mortality worldwide, and more effective treatment strategies need to be developed. Toxicarioside O (TCO), a natural product derived from Antiaris toxicaria, has been shown to be a potential anticancer agent. However, the molecular mechanisms involved remain poorly understood. In this study, our results demonstrated that TCO can induce both apoptosis and autophagy in colorectal cancer cells. Moreover, TCO-induced autophagy was due to the increase of the expression and activity of the enzyme sirtuin-1 (SIRT1), and subsequent inhibition of the Akt/mTOR pathway. Inhibition of SIRT1 activity by its inhibitor, EX-527, attenuated TCO-induced autophagy. Of interest, inhibition of autophagy by chloroguine, an autophagy inhibitor, enhanced TCO-induced apoptotic cell death, suggesting that autophagy plays a protective role in TCO-induced apoptosis. Together, these findings suggest that combination of TCO and autophagy inhibitor may be a novel strategy suitable for potentiating the anticancer activity of TCO for treatment of colorectal cancer.
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DOI:
10.3390/molecules14093694
发表时间:
2009-09-21
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
作者:
Dai HF;Gan YJ;Que DM;Wu J;Wen ZC;Mei WL
通讯作者:
Mei WL
影响因子:
16
作者:
Kroemer G;Mariño G;Levine B
通讯作者:
Levine B
影响因子:
2.7
作者:
Dong, Wen-Hua;Mei, Wen-Li;Dai, Hao-Fu
通讯作者:
Dai, Hao-Fu
影响因子:
13.3
作者:
Liu, Rui;Li, Jingyi;Wei, Yuquan
通讯作者:
Wei, Yuquan
DOI:
10.1016/s0022-5320(72)80042-x
发表时间:
1972-01-01
期刊:
JOURNAL OF ULTRASTRUCTURE RESEARCH
影响因子:
--
作者:
OTTENSMEYER, FP;SCHMIDT, EE;JACK, T
通讯作者:
JACK, T