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中国癌症防治杂志 ›› 2012, Vol. 4 ›› Issue (2): 119-122.doi: 10.3969/j.issn.1674-5671.2012.02.06

• 肝癌专栏 • 上一篇    下一篇

广西人肝细胞癌β-catenin基因突变及蛋白表达

  

  1. 广西医科大学附属肿瘤医院肝胆外科;广西医科大学研究生学院;广西医科大学第一附属医院肝胆血管外科
  • 出版日期:2012-06-25 发布日期:2012-07-03
  • 通讯作者: 黎乐群 E-mail:li_lequn@263.net
  • 基金资助:

    国家自然科学基金资助项目(30960021); 广西自然科学基金资助项目(桂科基 0640101);广西科技攻关资助项目(桂科攻 0632007-1E)

Expression and mutation analysis of β-catenin in patients with hepatocellular carcinoma in Guangxi

  • Online:2012-06-25 Published:2012-07-03

摘要: 目的 研究广西地区人肝细胞癌发生、发展过程中β-catenin基因突变和蛋白表达状况。方法 采用PCR联合基因直接测序法,检测108例肝细胞癌癌组织中β-catenin基因的突变;同时采用免疫组化方法检测β-catenin蛋白的表达状况。结果 108例HCC癌组织中仅有12例发生β-catenin基因突变,突变率为11.1%。108例HCC癌组织中β-catenin蛋白阳性表达率为70.0%(75/108),其中14.6%(11/75)为细胞核阳性;57.3%(43/75)为细胞质阳性;28.0%(21/75)为细胞膜阳性。β-catenin蛋白在12例有突变的样本中表达阳性率为100%。结论 广西地区肝癌中β-catenin基因突变率比较低;β-catenin基因突变可能为导致β-catenin蛋白过表达的因素之一,并参与了肝癌癌变过程。

关键词: 肝肿瘤, β-catenin, 突变

Abstract: Objective To explore β-catenin gene mutations and protein expression in patients with hepatocellular carcinoma(HCC) in Guangxi. Methods β-catenin gene mutations and protein expression were analyzed in 108 HCC tissues by direct sequencing and immunohistochemistry,respectively. Results Mutations in the β-catenin gene were found in 12 of 108 HCC tissues, giving a mutation rate of 11.1%.The overall rate of positive β-catenin protein expression was 70.0%,including samples that were nuclear-positive (14.6%),cytoplasm-positive(57.3%)and membrane-positive(28.0%).The protein was expressed in 100% of the tissues carrying β-catenin gene mutations. Conclusions HCC patients in Guangxi show a relatively low rate of β-catenin gene mutation.These mutations may play an import role in hepatocarcinogenesis by causing over-expression of β-catenin protein.

Key words: Liver neoplasms, β-catenin, Mutation