N-Acetyl cysteine and caffeic acid phenethyl ester sensitize astrocytoma cells to Fas-mediated cell death in a redox-dependent manner

被引:18
作者
Choi, Kyungsun
Han, Young-Hee
Choi, Chulhee
机构
[1] Korea Adv Inst Sci & Technol, Dept Brain & Bioengn, Lab Computat Cell Biol, Taejon 305701, South Korea
[2] Korea Adv Inst Sci & Technol, Grad Sch Med Sci & Engn, Taejon 305701, South Korea
[3] Korea Adv Inst Sci & Technol, Inst BioCentury, Taejon 305701, South Korea
关键词
apoptosis; caffeic acid phenethyl ester; fas; reactive oxygen species; n-acetyl cysteine;
D O I
10.1016/j.canlet.2007.07.006
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
In this study, we investigated the role of reactive oxygen species (ROS) in Fas-induced cell death in human astrocytoma cells. Fas activation increased intracellular ROS levels in a NADPH oxidase- and caspase-dependent manner. ROS inhibitors such as N-acetyl cysteine (NAC) and caffeic acid phenethyl ester (CAPE) dramatically sensitized astocytoma cells to Fas-induced loss of mitochondrial transmembrane potential and subsequent cell death, which were abrogated by pretreatment with z-VAD-fmk, a broad-spectrum caspase inhibitor. These results collectively indicate that NAC and CAPE sensitize astrocytoma cells to Fas-induced apoptosis in a redox-dependent manner, suggesting a potential use in the treatment of malignant brain tumors. (C) 2007 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:79 / 86
页数:8
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