论文部分内容阅读
目的:探讨与食管癌发病密切相关的微卫星杂合缺失(lossofheterozygosity,LOH)变化特征及其意义。方法:将32例原发性食管癌手术切除标本采用微卫星DNA多态分析法,选取染色体3p、5q、6p、9p、13q、16q、17p、17q和18q的18个多态微卫星位点,对食管癌组织进行LOH分析。结果:18个微卫星位点均获得有效数据。结论:抑癌基因RASSF1A、APC、p15、BRCA2、p53、BRCA1和DCC的LOH可能是食管癌发生过程中重要的分子事件。
Objective: To investigate the characteristics and significance of loss of heterozygosity (LOH) associated with the pathogenesis of esophageal cancer. Methods: Thirty-two cases of primary esophageal cancer resected specimens were selected by microsatellite DNA polymorphism and 18 polymorphic microsatellite loci of chromosome 3p, 5q, 6p, 9p, 13q, 16q, 17p, 17q and 18q , LOH analysis of esophageal cancer tissue. Results: Eighteen microsatellite loci obtained valid data. Conclusion: LOH of tumor suppressor genes RASSF1A, APC, p15, BRCA2, p53, BRCA1 and DCC may be important molecular events in the pathogenesis of esophageal cancer.