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RASSF1A基因在卵巢癌组织及腹腔冲洗液中的表达及甲基化的研究

Study about the Expression and Promoter Methylation of RASSF1A Gene in Ovarian Cancer and Peritoneal Fluid

【作者】 何玉

【导师】 曹云霞;

【作者基本信息】 安徽医科大学 , 妇产科学, 2006, 硕士

【摘要】 目的:1、检测RASSF1A(RAS相关区域家族1A)在卵巢癌组织及腹腔冲洗液中的表达缺失情况,进一步探讨该基因表达缺失与卵巢癌发生、发展的关系。 2、通过检测卵巢癌组织及腹腔冲洗液中RASSF1A基因甲基化状态及程度,进一步探讨该基因在肿瘤组织中表达缺失的机制,以及该基因在卵巢癌诊断和判断预后中的价值。 方法:1、采用逆转录—聚合酶链反应(RT—PCR)的方法检测42例卵巢癌患者癌组织、腹腔冲洗液(或腹水)、11例正常卵巢和19例良性卵巢病变组织中RASSF1A mRNA的表达。 2、通过甲基化特异性PCR(MSP)方法检测RASSF1A启动子区5′CpG岛在卵巢癌组织、腹腔冲洗液(或腹水)、正常卵巢组织及良性病变卵巢中的甲基化状态及程度。 结果:1、RASSF1A mRNA在所有正常和良性卵巢病变组织中均表达,而在卵巢癌癌组织中存在较高的表达缺失率(57.1%)。 2、RASSF1A mRNA的表达缺失率与卵巢癌的手术一病理分期有关,Ⅲ~Ⅳ期卵巢癌组织中RASSF1A mRNA的表达缺失率(75.0%)显著高于Ⅰ~Ⅱ(33.3%)(P<0.05),淋巴结转移阳性者癌组织中RASSF1A mRNA表达缺失率(73.9%)明显高于淋巴结转

【Abstract】 Objective: 1. To investigate the relationship between the transcription expression of RASSFIA mRNA and oncogenesis, development of ovarian cancer were found by measuring the loss RASSFIA (Ras association domain family 1A gene) expression in ovarian cancer and peritoneal fluid.2. To discuss the epigenetic inactivation mechanism of the RASSFIA in ovarian cancer and evaluate the value of RASSFIA in diagnosis and estimation prognosis by examining the promoter methylation of RASSFIA in ovarian cancer and peritoneal fluid.Methods: 1. RT-PCR was used to detect the expression of RASSF1A ovarian tumor tissues and ascites (or flushing fluid of peritoneal cavity) in 42 malignant ovarian tumor, 11 normal ovarian tissues and 19 benign ovarian tumor tissues.2. Methylation-specific PCR(MSP) was used to determine the hypermethylation of promoter 5’ CpG island region of RASSF1A gene in 42 malignant ovarian tumor tissues and ascites (or peritoneal fluid), 11 normal ovarian tissues and 19 benign ovarian tumor

  • 【分类号】R737.31
  • 【被引频次】1
  • 【下载频次】78
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