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Bcl-xl和p53基因在条斑紫菜多糖抑制胃癌BGC-823细胞增殖中的作用

作  者:
张杰;杨旭东;申梅淑
单  位:
牡丹江医学院
关键词:
条斑紫菜多糖;BGC-823细胞;Bcl-xl基因;p53基因
摘  要:
目的:探讨Bcl-xl、p53基因在条斑紫菜多糖抑制BGC-823细胞增殖和诱导凋亡中的作用。方法:将不同浓度条斑紫菜多糖作用于BGC-823细胞,利用MTT法检测细胞增殖抑制率,RT-PCR法检测Bcl-xl、p53基因表达量的变化、流式细胞仪检测细胞周期和细胞凋亡情况。结果:条斑紫菜多糖能抑制BGC-823细胞增殖及诱导细胞凋亡,并上调p53和降低Bcl-xl表达。结论:条斑紫菜多糖抑制人胃癌细胞增殖、促进凋亡,其机制可能与激活p53、抑制Bcl-xl表达有关。
译  名:
Effect of Bcl-xl and p53 Gene on Porphyra yezoensis Polysaccharide in Inhibitory Cell Proliferation in Gastric Carcinoma BGC-823 Cells
作  者:
ZHANG Jie,YANG Xu-dong,SHEN Mei-shu (Mudanjiang Medical College,Mudanjiang 157011,China)
关键词:
Porphyra yezoensis polysaccharide;BGC-823 cells;Bcl-xl gene;p53 gene
摘  要:
【Objective】To investigate the effect of Bcl-xl and p53 gene on BGC-823 cells proliferation and apoptosis induced by Porphyra yezoensis polysaccharide.【Method】 BGC-823 cells were treated with various of Porphyra yezoensis polysaccharide.We detected the rate of cell proliferation inhibition by MTT assay and the levels of Bcl-xl and p53 gene expression by RT-PCR.We detected cell cycle and cell apoptosis by flow cytometry.【Result】Porphyra yezoensis polysaccharide could effectively inhibit the BGC-823 cells proliferation and induce apoptosis,and it could effectively decrease the level of Bcl-xl gene expression and recrease the level of p53 gene expression.【Conclusion】Porphyra yezoensis polysaccharide could inhibite the BGC-823 cells proliferation and induce apoptosis of BGC-823 cells probably through down regulating Bcl-xl gene expression and up regulating p53 gene expression.

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