芹菜素对人胃癌细胞的生长抑制和凋亡诱导作用的研究

目的:了解芹菜素对人胃癌SGC-7901细胞的生长抑制和诱导凋亡作用。方法:MTT法检测芹菜素在体外对人胃癌SGC-7901细胞的生长抑制作用;流式细胞仪检测细胞的周期分布;DAPI荧光染色和DNA Ladder实验检测细胞凋亡;Western blotting方法检测了凋亡相关信号分子caspase-3和Bcl-2的蛋白表达情况。结果:芹菜素在体外可以明显抑制人胃癌细胞的生长,并诱导细胞发生凋亡。Western blotting实验结果表明,芹菜素可以诱导SGC-7901细胞中凋亡相关信号分子caspase-3活化片段的产生并抑制Bcl-2蛋白的表达。结论:芹菜素在体外可以抑制人胃癌SGC-7901细胞的生长并诱导细胞发生凋亡,且对于caspase-3的活化及Bcl-2蛋白表达的下调作用可能是其诱导细胞凋亡的机制之一。

THE GROWTH INHIBITION AND APOPTOSIS-INDUCING EFFECTS OF APIGENIN IN HUMAN GASTRIC CARCINOMA CELLS

Objective: To explore the growth inhibition and apoptosis-inducing effects of apigenin in human gastric cancer SGC-7901 cells. Method: MTT and flowcytometry were used to detect the growth inhibition and cell cycle distribution in apigenin-treated SGC-7901 cells respectively. DAPI fluorescence staining and DNA ladder assay were applied to study the pro-apoptosis effects of apigenin. The expression of apoptosis relative proteins, caspase-3 and Bcl-2, were analyzed by using Western blotting. Results: Apigenin treatment significantly inhibited the growth of human gastric cancer cell SGC-7901 and markedly caused their apoptosis following activation of caspase-3 and downregulation of Bcl-2 protein expression. Conclusion: The activation of caspase-3 and downregulation of apoptosis relative protein Bcl-2 expression were the possible mechanism of apigenin induced growth inhibition and apoptosis in SGC-7901 cells.