癌相关基因在结肠癌中的表达及其甲基化调控

被引:3
作者
陆娟
房静远
陈萦晅
朱红音
童菊芳
杨丽
机构
[1] 上海第二医科大学附属仁济医院
[2] 上海市消化疾病研究所 上海
关键词
结肠癌细胞系; 5-aza-dC; DNA甲基化; p16INK4A基因; APC基因;
D O I
暂无
中图分类号
R735.35 [];
学科分类号
100214 ;
摘要
目的 探讨癌相关基因APC、p16 INK4A、p2 1WAF1和c myc等在结肠癌中的表达及其受甲基化的调控。 方法 培养结肠癌细胞SW 1116、Colo 32 0、HT2 9,分别用不同浓度的 5 aza dC干预细胞。提取细胞的RNA ,用RT PCR的方法检测p16 INK4A、p2 1WAF1、APC和c myc等多种基因的表达情况 ;同时以流式细胞仪分析SW1116和Colo 32 0的细胞周期。结果  (1)三种细胞在干预前有较弱的 p16 INK4A和APC的表达 ,而在用 5 aza dC干预后表达增强 ,且在不同的结肠癌细胞株 5 aza dC作用发挥最佳的时间与浓度不同。 (2 ) p2 1WAF1在干预前后均不表达 ,c myc在干预前后表达无明显变化。 结论 三株人结肠癌细胞中 ,5 aza dC均可诱导 p16 INK4A和APC的表达 ,但对 p2 1WAF1和c myc无明显影响。
引用
收藏
页码:290 / 293
页数:4
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