中国寄生虫学与寄生虫病杂志 ›› 2002, Vol. 20 ›› Issue (5): 4-273.

• 论著 • 上一篇    下一篇

旋毛虫成虫cDNA文库免疫筛选及序列分析

杨雅平;诸欣平;杨静;周蕾;黄松
  

  1. 首都医科大学寄生虫学教研室 北京100054
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-10-30 发布日期:2002-10-30

Immunoscreening and Sequence Analysis of a cDNA Library of Adult Trichinella spiralis

YANG Ya ping;ZHU Xin ping;YANG Jing;ZHOU Lei;HUANG Song   

  1. Department of Parasitology;Capital University of Medical Sciences;Beijing 100054
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-10-30 Published:2002-10-30

摘要:   目的 为获得旋毛虫成虫抗原基因。 方法 应用免疫血清和人工感染血清对旋毛虫成虫cDNA文库进行免疫筛选、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 免疫筛选成虫cDNA文库 ,获得 9个阳性克隆。对其中的Ts87进行测序 ,又采用 5′ RACE ,获取全长为 1172bp的cDNA片段 ,该基因编码 3 47个氨基酸。序列分析表明 ,克隆Ts87是个尚未见报道的旋毛虫基因序列 ,存在预测的抗原表位。 结论 获得具有抗原性的旋毛虫抗原新基因。

关键词: 旋毛虫, 成虫, cDNA文库, 免疫筛选, 序列分析

Abstract:  Objective To obtain an antigenic gene of adult Trichinella spiralis. Methods cDNA library of the adult Trichinella spiralis was screened using the sera of immunized and infected rabbits. The gene sequence was analyzed by DNAstar software and GenBank database. Results Nine positive clones were identified by immunoscreening. The clone Ts87 was sequenced and a cDNA with 1 172 bp full length was obtained using 5′ RACE technique, encoding 347 amino acids. Some possible antigen epitopes were predicted. Conclusion A novel antigenic gene of Trichinella spiralis was obtained.

Key words: Trichinella spiralis, adult worm, cDNA library, immunoscreening, sequence analys