RASSF 1A基因在卵巢癌组织及腹腔冲洗液中甲基化的研究

目的:探讨卵巢癌组织和腹腔冲洗液中Ras相关区域家族1A (Ras association domain family 1A,RASSF 1A)基因启动子异常甲基化状况及其在卵巢癌诊断中的价值。方法:采用甲基化特异性PCR方法检测42例卵巢癌组织、腹腔冲洗液或腹腔积液、11例正常卵巢组织和19例良性病变卵巢组织中RASSF 1A基因启动子区甲基化状态。结果:42例卵巢癌组织中RASSF 1A基因启动子区甲基化发生率为38.1%,11例正常卵巢组织和19例良性卵巢组织中RASSF 1A基因启动子区无甲基化,差异有统计学意义(P<0.01)。临床分期Ⅲ期和Ⅳ期的卵巢癌组织中RASSF 1A基因启动子区甲基化发生率为54.2%,高于临床Ⅰ期和Ⅱ期者16.6%(P<0.05)。淋巴结阳性者癌组织中RASSF 1A基因启动子区甲基化发生率56.5%,高于淋巴结阴性者15.8%。腹腔冲洗液或腹腔积液细胞学阳性者癌组织中RASSF 1A基因启动子区甲基化发生率为74.1%,高于腹腔冲洗液或腹腔积液细胞学阴性者33.3%(P<0.01)。结论:RASSF 1A基因甲基化在卵巢癌患者中具有较高的发生率,检测卵巢癌组织和腹腔冲洗液或腹腔积液中RASSF 1A基因的甲基化状态对卵巢癌的诊断和判断预后具有一定的价值。

Study on promoter methylation of RASSF 1A gene in ovarian cancer and peritoneal fluid

Objective:To investigate the promoter hypermethylation status of tumor suppressor Ras association domain family 1A(RASSF 1A) gene in ovarian cancer,peritoneal fluid and the value of diagnosis of ovarian cancer.Methods:The promoter methylation status of the promoter region of RASSF 1A was analyzed by methylation specific-PCR in forty-two malignant ovarian tumor tissues and ascites(or peritoneal fluid),eleven normal ovarian tissues and ninteen benign ovarian tumor tissues.Results:The promoter methylation rate...