应用基因芯片技术研究白花蛇舌草豆甾醇抑制人肝癌细胞体外生长的靶基因调控

被引:25
作者
张硕 [1 ]
王宏韬 [2 ]
石振艳 [1 ]
张丽 [1 ]
宋衍芹 [3 ]
岳旺 [1 ]
机构
[1] 青岛大学医学院药学系
[2] 青岛大学医学院科研科
[3] 青岛市市立医院口腔临床医学中心
关键词
白花蛇舌草; 豆甾醇; 人基因芯片; 人肝癌细胞SMMC-7721; 抑制作用;
D O I
10.13241/j.cnki.pmb.2007.08.010
中图分类号
R285.5 [中药实验药理];
学科分类号
摘要
目的:应用基因芯片技术研究白花蛇舌草豆甾醇(Stigmasterol from Hedyotis diffusa willd.,SHD)抑制人肝癌细胞SMMC-7721生长的靶基因调控。方法:MTT法评价SHD在0、5、10、50、100mg/L浓度下,于24、48、72h对人肝癌细胞SMMC-7721的抑制率变化。分别提取人正常肝细胞、人肝癌SMMC-7721细胞和SHD作用后的SMMC-7721细胞的总RNA,逆转录合成单链、双链cDNA后,体外转录合成生物素标记的cRNA与人HO4基因表达谱芯片杂交,扫描杂交芯片图像,利用软件获得SHD抑制人肝癌的靶基因,对其进行生物信息学分析。结果:SHD对SMMC-7721具有体外抑制作用,且呈剂量依赖性和时间依赖性;SHD使癌基因fos、myc、ras、pim-1、met、rel下调至正常水平,使抑癌基因NF-2和磷酸激酶MAP2K6的表达上调至正常水平。结论:SHD对人肝癌细胞SMMC-7721具有显著的体外抑制作用;SHD抑制SMMC-7721细胞的作用由多条靶基因协同,并通过胞内外信号转导途径协调完成。
引用
收藏
页码:1181 / 1183
页数:3
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