Apaf-1基因转染及其对5-氟尿嘧啶诱导AGS细胞凋亡的影响

被引:8
作者
李红梅
杨云生
程留芳
机构
[1] 北京解放军总医院消化科,北京解放军总医院消化科,北京解放军总医院消化科,,
关键词
基因转染; 5-氟尿嘧啶; 凋亡;
D O I
暂无
中图分类号
R730.5 [肿瘤治疗学];
学科分类号
100214 ;
摘要
目的 Apaf 1是参与激活凋亡过程中Caspase系统的关键因子。研究Apaf 1在化疗药物诱导肿瘤细胞凋亡过程中的作用。方法 利用基因转染技术 ,将正、反义Apaf 1表达载体转染至AGS细胞系 ,建立Apaf 1过度表达及减低表达系统 ,观察在Apaf 1过度表达及减低表达情况下 ,5 氟尿嘧啶(5 FU)对AGS细胞凋亡过程的影响 ,并检测正、反义Apaf 1转基因AGS细胞株在 5 FU诱导的凋亡过程中细胞色素C信号转导通路相关分子的表达变化。结果 正义Apaf 1基因转染组cyt c、bax及cas pase 3基因的表达显著上调 ,而在反义Apaf 1基因转染组则相反。bcl 2基因的表达在正、反义Apaf 1基因转染组无明显变化。结论 过度表达Apaf 1基因可以明显增加AGS细胞对化疗药物 5 FU的敏感性 ,而Apaf 1基因减少可使凋亡敏感性降低
引用
收藏
页码:34 / 37
页数:4
相关论文
共 8 条
[1]  
Apaf 1 is required for mitochondrial pathways of apoptosis and brain development. Yoshida H,Kong YY,Yoshida R. Cell . 1998
[2]  
Regulation of apoptotic proteins activating factor 1 oligomerization and apoptosis by the WD40 repeat region. Collin A. Journal of Biochemistry . 1999
[3]  
Early release of mitochondrial cytochrome c and expression mitochondrial epitope 7A6 with a porphyrin-derived photosensitizer: Bcl-2 and Bcl-xL overexpression do not prevent early mitochondrial events but still depress caspase activity. Carthy CM,Granville DJ,Jiang H,et al. Laboratory Investigation . 1999
[4]  
Prevention of apoptosis by Bcl-2:release of cytochrome c from mitochondria blocked. Yang J,Liu X,Bhalla K,et al. Science . 1997
[5]  
Anticancer drugs induce increased mitochondrial cytochrome c expression that preceeds cell death. Sanchez-Alcazar JA,Khcdjakov A,Schneider E. Cancer Research . 2001
[6]  
The release of cytochrome c from mitochondria: a primary site for Bcl-2 regulation of apoptosis. Kluck RM,Green DR,Newmeyer DD,et al. Science . 1997
[7]  
Inactivation of the apoptosis effector Apaf-1 in malignant melanoma. Soengas MS,Capodieci P,Polsky D,et al. Nature . 2001
[8]  
Apaf 1 regulates programmed cell death in mammalian development. Cecconi F,Alvarez-Bolado G,Meyer BI. Cell . 1998