摘要
目的:观察外源性PDCD5对人雄激素非依赖性前列腺癌细胞PC-3M-1E8的促凋亡作用。方法:扩增重组质粒PCI-neo-PDCD5,利用脂质体介导将其瞬时转染前列腺癌细胞PC-3M-1E8,RT-PCR检测转染后表达情况;撤除血清培养16h后,通过四甲基偶氮唑盐(MTT)比色法检测细胞存活率,原位末端标记法(TUNEL)检测细胞凋亡指数,透射电子显微镜观察细胞形态。结果:MTT结果显示转染重组质粒组细胞较转染空载体和对照组细胞生长速度明显减慢,存活细胞明显减少(P<0.001);通过TUNEL与透射电镜观察,发现转染组细胞凋亡程度和数量明显增加,凋亡指数较对照组明显增高(P<0.001)。结论:PDCD5在撤出血清因素的诱导作用下能显著抑制前列腺癌细胞PC-3M-1E8在体外的生长,明显促进其凋亡。
Objective： To investigate the apoptosis-promoting effect of PDCD5 on human prostate cancer cells PC-3M-1E8. Methods： PCI-neo and PCI-neo-PDCD5 were transfected into PC-3M-1E8 cells by Lipofectamine 2000, the viability of the cells was analyzed by MTT assay 16 hours after removal of the serum, and the apoptosis was determined by in situ end-labeling and electron microscopy. Results ： The viability and growing speed of the transfected cells were significantly decreased and their apoptotic indexes significantly increased as compared with the control group （P 〈 0. 001 ）. Conclusion： PDCD5 may significantly inhibit the in vitro growth and promote the apoptosis of human prostate cancer cells PC-3M-1E8.
出处
《中华男科学杂志》
CAS
CSCD
2007年第11期979-982,共4页
National Journal of Andrology
基金
黑龙江省卫生厅基金(2006-258)
