Live morphological analysis of taxol-induced cytoplasmic vacuoliazation in human lung adenocarcinoma cells

被引:17
作者
Wang, Xiao-Ping [1 ,2 ,3 ]
Chen, Tong-Sheng [1 ,2 ]
Sun, Lei [1 ,2 ]
Cai, Ji-Ye [3 ]
Wu, Ming-Qian [3 ]
Mok, Martin [4 ]
机构
[1] S China Normal Univ, MOE Key Lab Laser Life Sci, Guangzhou 510631, Guangdong, Peoples R China
[2] S China Normal Univ, Inst Laser Life Sci, Guangzhou 510631, Guangdong, Peoples R China
[3] Jinan Univ, Affiliated Hosp 1, Dept Anesthesiol, Guangzhou 510632, Guangdong, Peoples R China
[4] Univ So Calif, Dept Anesthesiol, Los Angeles, CA 90033 USA
基金
中国国家自然科学基金;
关键词
Taxol; Atomic force microscope (AFM); Cytoplasmic vacuolization; Confocal fluorescence microscope; Caspase-3; Endoplasmic reticulum (ER);
D O I
10.1016/j.micron.2008.04.007
中图分类号
TH742 [显微镜];
学科分类号
摘要
Taxol (paclitaxel), one of the most active cancer chemotherapeutic agents, can cause programmed cell death (PCD) and cytoplasmic vacuolization. The objective of this study was to analyze the morphological characteristics induced by taxol. Human lung adenocarcinoma (ASTC-a-1) cells were exposed to various concentration of taxol. CCK-8 was used to assay the cell viability. Atomic force microscopy (AFM), plasmid transfection and confocal fluorescence microscopy were performed to image the cells morphological change induced by taxol. Fluorescence resonance energy transfer (FRET) was used to monitor the caspase-3 activation in living cells during taxol-induced cell death. Cells treated with taxol exhibited significant swelling and cytoplasmic vacuolization which may be due to endoplasmic reticulum (ER) vacuolization. Caspase-3 was not activated during taxol-induced cytoplasmic vacuolization and cell death. These findings suggest that taxol induces caspase-3-independent cytoplasmic vacuolization, cell swelling and cell death through ER vacuolization. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1216 / 1221
页数:6
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