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机构地区:[1]中国医科大学附属盛京医院泌尿外科,辽宁沈阳110004
出 处:《中华男科学杂志》2013年第2期107-110,共4页National Journal of Andrology
摘 要:目的:通过检测Ras相关序列家族2(RASSF2)基因在前列腺癌及前列腺增生组织中的甲基化及其蛋白表达情况,探讨该基因的表观失活在前列腺癌发生发展中的作用及意义。方法:获取前列腺癌石蜡包埋组织标本30例(实验组),前列腺增生石蜡包埋组织标本30例(对照组),石蜡组织标本切片后获取相应组织基因组DNA,通过甲基化特异性PCR技术(MSP)检测两组组织中RASSF2基因甲基化情况,通过免疫组织化学技术检测两组组织中RASSF2蛋白表达情况。结果:实验组中,RASSF2基因甲基化发生率为66.7%(20/30),RASSF2蛋白表达缺失发生率为70.0%(21/30);对照组中RASSF2基因甲基化发生率为6.7%(2/30),RASSF2蛋白表达缺失发生率为3.3%(1/30)。实验组RASSF2基因甲基化发生率显著高于对照组,差异有统计学意义(P<0.05);实验组RASSF2蛋白表达缺失发生率显著高于对照组,差异亦有统计学意义(P<0.05)。RASSF2基因异常甲基化与其蛋白表达缺失具有显著相关性(P<0.05)。结论:RASSF2基因的表观失活与前列腺癌的发生具有相关性,RASSF2基因的表观失活有望成为前列腺癌的分子诊断及治疗靶点。Objective : To investigate the role of the epigenetic inactivation of Ras association domain family 2 (RASSF2) in the occurrence and development of prostate cancer by detecting the methylation and protein expression of RASSF2 in the tissues of prostate cancer and prostatic hyperplasia. Methods : We obtained genome DNA from 30 formalin-fixed paraffin-embedded specimens of pros- tate cancer (experimental group) and another 30 of prostatic hyperplasia (control group). We detected the methylation of RASSF2 by methylation-speeific PCR (MSP) and its protein expression by immunohistochemistry. Results : The rates of RASSF2 promoter hy- permethylation and the absence of its protein expression were 66.7% (20/30) and 70.0% (21/30) respectively in the experimental group, significantly higher than 6.7 % (2/30) and 3.3 % (1/30) in the control group ( P 〈 0.05 ). The promoter hypermethylation of RASSF2 was significantly correlated with the absence of its protein expression ( P 〈 O. 05 ). Conclusion : The epigenetic inactivation of RASSF2 is involved in the occurrence of prostate cancer, and is expected to be a target of molecular diagnosis and treatment of pros- rate cancer. Natl J Androl, 2013, 19 (2) : 107 -110
关 键 词:前列腺癌 Ras相关序列家族2 甲基化 蛋白表达 表观失活
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