中国寄生虫学与寄生虫病杂志 ›› 2004, Vol. 22 ›› Issue (6): 10-356.

• 论著 • 上一篇    下一篇

阴道毛滴虫7个分离株表面黏附蛋白33基因序列比较

袁丽杰1,高兴政2
  

  1. 1 华北煤炭医学院生物科学系,唐山 063000 2 北京大学基础医学院寄生虫学教研室,北京 100083
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-12-30 发布日期:2004-12-30

Study on Surface Adhesion Protein 33 Gene Sequence of Different Trichomonas vaginalis Isolates

YUAN Li-jie,GAO Xing-zheng
  

  1. Department of Biology,North China Coal Medical College,Hebei 063000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-12-30 Published:2004-12-30

摘要:   目的 分析我国阴道毛滴虫7个分离株表面黏附蛋白33(AP33)基因的遗传多态性。 方法 抽提基因组DNA,用特异引物PCR扩增AP33基因、测序、分析其同源性并构建系统进化树。用甲硝唑体外分别作用于7个分离株,得其最小致死量(MLC)。 结果 阴道毛滴虫北京1、2株,唐山株 承德株、九江 1、2、3株7个分离株AP33基因与Gen Bank中U87098株同源性高达98.2 %~100%,属同型虫株。其中承德株和U87098株北京1株和唐山株北京2株和九江3株九江1株和九江2株各形成一个分支,两两之间具有较近的亲缘关系。7个分离株的地理来源与其进化关系未见相关性。 结论 阴道毛滴虫7个分离株AP33基因的遗传关系密切,属同型虫株,但其基因序列存在一定差异。亲缘关系较近的虫株间甲硝唑MLC值相差较大。

关键词: 阴道毛滴虫, 黏附蛋白33, 序列分析, DNA

Abstract:  Objective To study genetic polymorphism of surface adhesion protein 33 (AP33) gene on the seven isolates of Trichomonas vaginalis. Methods PCR technique was performed to amplify AP33 gene from the seven isolates, DNA sequences were obtained from the AP33 gene of the isolates and phylogenetic tree was built. Minimal lethal concentrations(MLC) of metronidazole on the isolates were measured in vitro. Results Percentage of the similarity between 7 isolates and U87098 in GenBank was 98.2%-100%,which indicated a high homology and belonged to isotype isolates. There were four branches between Beijing 1 isolate and Tangshan isolate, Jiujiang 1 isolate and Jiujiang 2 isolate, Beijing 2 isolate and Jiujiang 3 isolate, Chengde isolate and U87098 isolate in phylogenetic tree, which showed a close genetic relationship respectively. No relativity was detected between geographical origin and genetic relationship. Conclusion There is a close genetic relationship among the seven T. vaginalis isolates. MLC showed a difference between isolates which have close relationship.

Key words: Trichomonas vaginalis, Adhesion protein 33, equences analysis, DNA