中国寄生虫学与寄生虫病杂志 ›› 2011, Vol. 29 ›› Issue (1): 16-67-70.

• 研究简报 • 上一篇    下一篇

多头带绦虫硫氧还蛋白过氧化物酶基因的克隆及序列分析

 李永光1, 2, 李文卉1, 盖文燕1, 姚菊霞1, 曲自刚1, 贾万忠1, Radu Blaga3, 付宝权1 *   

  1. 1 中国农业科学院兰州兽医研究所,家畜疫病病原生物学国家重点实验室,农业部兽医公共卫生重点开放实验室,甘肃省动物寄生虫病重点实验室,兰州 730046;2 甘肃农业大学动物医学院,兰州 730070;3 罗马尼亚农业与兽医大学兽医学院, 克鲁日?鄄纳波卡 400372
  • 出版日期:2011-02-28 发布日期:2012-09-27

Cloning and Sequence Analysis of Thioredoxin Peroxidase Gene from Taenia multiceps

LI  Yong-Guang-1, 2 , LI  Wen-Hui-1, GAI  Wen-Yan-1, TAO  Ju-Xia-1, QU  Zi-Gang-1, GU  Mo-Zhong-1, Radu  Blaga3, FU  Bao-Quan-1 *   

  1. 1 Key Laboratory of Animal Parasitology of Gansu Province;Key Laboratory of Veterinary Public Health of the Ministry of Agriculture;State Key Laboratory of Veterinary Etiological Biology;Lanzhou Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Lanzhou 730046,China;2 College of Veterinary Medicine,Gansu Agricultural University,Lanzhou 730070,China;3 Faculty of Veterinary Medicine,University of Agricultural Sciences and Veterinary Medicine,Cluj-Napoca 400372,Romania
  • Online:2011-02-28 Published:2012-09-27

摘要: 从自然感染的羊脑内采集脑多头蚴原头节,提取总RNA。根据亚洲牛带绦虫的TaHc2-D11 mRNA序列设计特异引物,采用RT-PCR技术扩增多头带绦虫硫氧还蛋白过氧化物酶(TmTPx)基因。PCR产物连接到pMD18-T载体构建重组质粒pMD-TmTPx,转化大肠埃希菌DH5α后筛选阳性克隆,经限制性酶切及测序鉴定后进行序列分析。扩增获得大小为614 bp的TmTPx基因cDNA,该基因的完整开放阅读框架(ORF, 591 bp)编码196个氨基酸,编码蛋白的相对分子质量为Mr 21 690,等电点为7.61。生物信息学分析结果表明TmTPx具有一个典型的2-Cys Prx保守功能结构域。绦虫已知TPx的分子进化分析发现,多头带绦虫与亚洲牛带绦虫的亲缘关系最近,与猪带绦虫和肥头绦虫的亲缘关系次之,与细粒棘球绦虫和多房棘球绦虫的亲缘关系最远。

关键词: 多头带绦虫, 脑多头蚴, 硫氧还蛋白过氧化物酶, 克隆, 序列分析

Abstract: Protoscoleces of Taenia multiceps were collected from the naturally infected sheep and total RNA was extracted. Specific primers were designed according to TaHc2-D11 mRNA sequence and T. multiceps thioredoxin peroxidase gene (TmTPx) was amplified by RT-PCR. PCR products were ligated into pMD18-T vector and transformed to E. coli DH5α. The recombinant plasmids were identified by restriction digestion and sequencing. A 614 bp cDNA was amplified. The TmTPx open reading frame (591 bp) encoded a 196-amino acid protein with Mr 21 690, pI 7.61. Bioinformatics analysis indicated that TmTPx had a typical 2-Cys Prx conserved domain. Phylogenetic tree revealed that T. multiceps had the closest relationship to T. asiatica, followed by T. solium and T. crassicepsE. granulosus and E. multilocularis.