DNA修复基因hOGG1多态与食管癌遗传易感性

被引:17
作者
邢德印
谭文
宋南
林东昕
机构
[1] 北京中国医学科学院中国协和医科大学肿瘤研究所病因及癌变研究室,北京中国医学科学院中国协和医科大学肿瘤研究所病因及癌变研究室,北京中国医学科学院中国协和医科大学肿瘤研究所病因及癌变研究室,北京中国医学科学院中国协和医科大学肿瘤研究所病因及癌变研究室
基金
国家杰出青年科学基金; 国家自然科学基金重大项目;
关键词
hOGG1基因; 食管癌; 基因多态; 遗传易感性;
D O I
暂无
中图分类号
学科分类号
摘要
目的 研究修复 8-羟基鸟嘌呤的 h OGG1基因 Ser32 6 Cys多态与中国人食管癌易感性的关系。方法 采用病例 -对照分子流行病学方法 ,以 PCR-单链构象多态 (single strand conformationpolymorphism ,SSCP)技术 ,分析了 2 0 1名正常对照和 196例食管癌患者 h OGG1基因第 32 6位 Ser/Ser、Ser/Cys和 Cys/Cys基因型分布 ,并比较不同基因型与食管癌风险的关系。结果 正常人群的 Ser/Ser、Ser/Cys和 Cys/Cys基因型频率分别为 33.8%、5 2 .8%和 13.4%,而食管癌病例组则分别为 39.8%、38.8%和 2 1.4%。虽然两组人群的 Cys等位基因频率基本相同 (39.8%和 40 .8%) ,但食管癌病例组的Cys/Cys基因型频率显著高于对照组 (P<0 .0 5 )。与携带 Ser/Ser或 Ser/Cys基因型者比较 ,携带 Cys/Cys基因型个体患食管癌的风险增加 2倍 (校正 OR=1.9;95 %CI=1.3~ 2 .6 )。吸烟增加食管癌风险 (OR=2 .6 ;95 %CI=1.7~ 3.9) ,但与 h OGG1Cys/Cys基因型无明显协同作用。结论 中国人食管癌易感性与DNA修复基因 h OGG1多态相关 ,h OGG1基因 Ser32 6 Cys多态可能可以作为食管癌遗传易感性标志物 ,用于易感个体的预警和预防
引用
收藏
页码:4 / 7
页数:4
相关论文
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