乳腺导管癌及癌前病变中端粒酶基因与p53,bcl-2 的表达及相关性(英文)

被引:2
作者
马萍 [1 ]
王睿 [2 ]
赵艳 [2 ]
宋敏 [2 ]
宋继谒 [2 ]
机构
[1] 中国医科大学附属第一医院肿瘤研究所
[2] 中国医科大学基础医学院病理教研室
关键词
乳腺导管非典型增生; .乳腺癌; 端粒酶; 凋亡; 基因表达;
D O I
暂无
中图分类号
R737.9 [乳腺肿瘤];
学科分类号
100214 ;
摘要
目的观察端粒酶基因(hTR、hTRT)、凋亡相关基因(p53、bcl-2)在乳腺癌及癌前病变中的表达及相互关系。方法应用原位杂交方法检测端粒酶基因(hTR、hTRT)和凋亡相关基因(p53、bcl-2)mRNA在44例乳腺导管非典型增生组织中的表达,应用免疫组化方法检测p53基因蛋白在上述病例中的表达,并与6例乳腺良性乳腺增生及26例乳腺癌病例进行了比较。结果端粒酶基因(hTR、hTRTmRNA)在乳腺导管重度非典型增生组织中表达增强(60.9%,52.1%),其表达与在轻、中度非典型增生中(分别为22.2%,11.1%和33.3%,25.0%)和乳腺癌组织中(88.5%,80.8%)的表达差异显著(P<0.05).p53mRNA在乳腺导管非典型增生组织中的表达随着异型性的增加而下降,而p53基因蛋白则相应增加。Bcl-2在乳腺导管非典型增生组织中呈中度表达,其中以在重度中表达明显。结论端粒酶基因hTR、hTRT的表达与乳腺非典型增生细胞的恶性转化密切相关,同时可检测到p53mRNA的表达缺失、p53蛋白突变及bcl-2mRNA的过表达,且表达水平与端粒酶活性有相关关系。
引用
收藏
页码:1028 / 1032
页数:5
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