中国组织工程研究与临床康复2007，Vol.11Issue(35)：7102-7105,4.
荧光共振能量转移技术对肺腺癌活细胞中消癌平诱导半胱氨酸天冬氨酸酶3活化过程的实时监测
Timely monitoring of the activation of Xiaoaiping-induced cysteine aspartase 3 in human lung adenocarcinoma cells by fluorescence resonance energy transfer technology
摘要
Abstract
BACKGROUND:Combination of biological and optical technique is used to study the molecular mechanism of cell proliferation and apoptosis, which has become the study hotspot in the filed of bioengineering.OBJECTIVE: The goal of this study was to study the molecular mechanism of XAP-induced apoptosis in single living human lung adenocarcinoma (ASTC-a-1) cells by using confocal fluorescence microscopy imaging and fluorescence resonance energy transfer (FRET) techniques.DESIGN: A controlled observation.SETTING: Institute of Laser Life Science (Key Laboratory of Education Department), South China Normal University.MARERIALS: This experiment was carried out in the Institute of Laser Life Science (Key Laboratory of Education Ministry), South China Normal University between October 2006 and March 2007. Human lung adenocarcinoma (ASTC-a-1) cells were cultured in our laboratory. Xiaoaiping (XAP) parenteral solution was purchased from Tonghua Shenyuan Pharmaceutical Co.,Ltd (No. Z20025869), and G418 was purchased from Huamei Biological Company. SCAT3 was provided by Professor Masayuki Miura. Auto microplate reader (infinite M200, Tecan,Austria)and mitochondrial location fluorescent probe (Mitertracker Red)was purchased from Molecular Probe Company.METHODS: ① The inhibition of XAP at different doses to ASTC-a-1 cell viability was detected by CCK-8. ② Dynamical change of caspase 3-induced by XAP was detected by confocal fluorescence microscopy imaging and fluorescence resonance energy transfer (FRET) techniques. ③The fluorescence emission spectrum of SCAT3 was detected by confocal fluorescence microscopy imaging at different time points after XAP treatment.MAIN OUTCOME MEASURES: ①Cell viability after XAP treatment. ② Dynamic change of fluorescence resonance energy transfer efficiency of SCAT3 detected after XAP treatment. ③ Dynamical change of mitochondrial morphology after XAP treatment.RESULTS: ①XAP inhibited the viability of tumor cells dose-dependently. ② XAP induced the activation of intracellular caspase 3. ③Some mitochondria became dot, and some were cracked after XAP treatment.CONCLUSION: XAP can induce the apoptosis of ASTC-a-1, and caspase 3 is involved in the regulation course.关键词
荧光共聚焦显微成像/荧光共振能量转移/消癌平/人类肺腺癌细胞/凋亡/生物医学工程分类
医药卫生引用本文复制引用
陈同生,王龙祥,王会营,邢达..荧光共振能量转移技术对肺腺癌活细胞中消癌平诱导半胱氨酸天冬氨酸酶3活化过程的实时监测[J].中国组织工程研究与临床康复,2007,11(35):7102-7105,4.基金项目
中国自然科学基金资助项目(30670507,60378043,30470494) the National Natural Science Foundation of China, No.30670507 （30670507,60378043,30470494）
60378043 （）
30470494 （）
