中国寄生虫学与寄生虫病杂志 ›› 2001, Vol. 19 ›› Issue (2): 2-71.

• 论著 • 上一篇    下一篇

旋毛虫成虫期特异性基因的筛选与序列分析

杨静,诸欣平,张新梅,杨雅平,周蕾,高欣,刘明远,Boireau Pascal
  

  1. 首都医科大学寄生虫学教研室!北京100054;首都医科大学寄生虫学教研室!北京100054;首都医科大学寄生虫学教研室!北京100054;首都医科大学寄生虫学教研室!北京100054;首都医科大学寄生虫学教研室!北京100054;首都医科大学寄生虫学教研室!北京100054;军需大学旋毛虫病实验室!长春
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-04-30 发布日期:2001-04-30

Screening and Sequence Analysis of the Adult Stage-specific Gene of Trichinella spiralis

YANG Jing 1;ZHU Xin ping 1*;ZHANG Xin mei 1;YANG Ya ping 1 ZHOU Lei 1;GAO Xin 1;LIU Ming yuan 2;Boireau Pascal 3   

  1. 1 Department of Parasitology;Capital University of Medical Sciences;Beijing 100054; 2 Trichinellosis Lab;the
  • Received:1900-01-01 Revised:1900-01-01 Online:2001-04-30 Published:2001-04-30

摘要:   目的 获得旋毛虫成虫期特异性基因序列。方法 应用旋毛虫成虫期特异性探针对成虫cDNA文库进行杂交筛选、克隆测序及核苷酸序列数据库 (GenBank)查寻比较 ,采用DNAstar软件进行基因序列分析。结果 利用消减杂交 (subtractedhybridization)获得的旋毛虫成虫期特异性探针筛选成虫cDNA文库 ,获得一个长 16 2 9bp的基因。其开放阅读框架由 146 4个核苷酸组成 ,编码 487个氨基酸。序列分析表明 ,该序列是一个尚未见报道的旋毛虫基因序列 ,在 2 0 7~ 2 70位氨基酸间存在两个锌指结构 ,在 5 2~ 6 4,10 8~ 116 ,137~ 16 3,2 2 6~ 2 6 0位氨基酸处存在预测的抗原表位。结论 获得旋毛虫成虫期特异性基因 ,其编码的蛋白具有一定的抗原表位

关键词: 旋毛虫, 成虫cDNA文库, cDNA克隆, 序列分析, 消减杂交

Abstract:  Objective To obtain the sequence of the adult stage specific gene of Trichinella spiralis . Methods An adult T. spiralis cDNA library was screened using an adult T. spiralis stage specific probe. The gene sequence was analyzed by DNAstar software and GenBank database. Results A cDNA clone of 1 629 bp was obtained by screening the library with an adult stage specific probe. The clone contained one open reading frame composed of 1 464 bp encoding 487 amino acids. GenBank searching revealed that no identical cDNA was found. Two zinc fingers located at the positions within amino acids 207-270. Some possible antigen epitopes were predicted within the amino acids 52-64,108-116,137-163 and 226-260. Conclusion A novel stage specific gene of adult T. spiralis encoding the protein containing certain predicted antigen epitopes was obtained.

Key words: Trichinella spiralis, adult cDNA library, cDNA clone, sequence analysis subtracted hybridization