畜牧兽医学报 ›› 2013, Vol. 44 ›› Issue (11): 1826-1831.doi: 10.11843/j.issn.0366-6964.2013.11.018

• 预防兽医 • 上一篇    下一篇

柔嫩艾美耳球虫入侵相关蛋白EtMA1和EtMA2的克隆及序列分析

戚南山1,陈海宁1, 2,吕敏娜1,吴彩艳1,廖申权1,李娟1,仝宗喜2*,孙铭飞1*   

  1. (1. 广东省农业科学院动物卫生研究所,广州 510640; 2. 河南农业大学牧医工程学院,郑州 450002)
  • 收稿日期:2013-05-02 出版日期:2013-11-23 发布日期:2013-11-23
  • 通讯作者: 仝宗喜,副教授,E-mail: tongzx0329@sohu.com;孙铭飞,副研究员,E-mail: smf7810@126.com
  • 作者简介:戚南山(1985-),男,安徽霍山县人,助理研究员,硕士,主要从事鸡球虫入侵机制的研究,E-mail: nanshanqi@163.com,Tel:020-85291691;陈海宁(1989-),女,河南驻马店人,硕士研究生,E-mail:chenhaining1988@126.com,二人对本文同等贡献
  • 基金资助:

    国家自然科学基金(31201902);珠江科技新星项目(2012J2200059);广东省农业攻关项目(2012A020100001);广东省农业科学院动物卫生研究所所长基金(2011SZJJ003)

Cloning and Sequence Analysis of Eimeria tenella Invasion-associated Proteins, EtMA1 and EtMA2

QI Nan-shan1, CHEN Hai-ning1,2, LYU Min-na1, WU Cai-yan1, LIAO Shen-quan1, LI Juan1, TONG Zong-xi2*, SUN Ming-fei1*   

  1. (1. Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China; 2. College of Animal and Veterinary Science,Henan Agricultural University,Zhengzhou 450002, China)
  • Received:2013-05-02 Online:2013-11-23 Published:2013-11-23

摘要:

 为筛选柔嫩艾美耳球虫(Eimeria tenella)候选疫苗分子,注释并克隆E. tenella入侵相关蛋白EtMA1EtMA2的编码基因,并对其序列结构进行分析。本研究利用生物信息学和比较基因组学技术注释获得EtMA1EtMA2的编码基因序列,以E. tenella(广东株)裂殖子总RNA为模板,利用RT-PCR的方法扩增获得EtMA1EtMA2的开放阅读框(ORF)序列。利用在线生物信息学软件分析EtMA1EtMA2的序列结构及与顶复门其他虫属的进化关系。 结果显示,EtMA1EtMA2 ORF全长分别为1 6171 725 bp,分别编码全长为539个氨基酸和575个氨基酸的多肽片段。二者与TgAMA1相似性分别为30%26%EtMA1EtMA2同属于E. tenella顶膜抗原超家族蛋白,可能在虫体对宿主的入侵过程中起着关键作用,这也为防控鸡球虫病提供了新的候选疫苗分子。

Abstract:

To screen the novel candidate vaccine for E. tenella, the genes of EtMA1 and EtMA2 associated with parasites invasion were cloned and the sequences were analyzed. The sequence of EtAMA1 cloned in our laboratory were analyzed by the bioinformatics tool and the technology of comparative genomics, and the gene sequences encoding EtMA1 and EtMA2 were acquared. The EtMA1 and EtMA2 ORF were amplified by RT-PCR from E. tenella (Guangdong strain) merozoites total RNA template. The sequence structures of EtMA1 and EtMA2, and the evolution relationship with other apicomplexan parasites were analyzed by bioinformatics software on line. The result showed that the ORF of EtMA1 and EtMA2 were 1 617 and 1 725 bp in full length, and coding the peptides of 549 and 575 aa in length. The amino acid sequences were highly conserved with E. tenella apical membrane antigen (EtAMA1) and TgAMA1. Both of the EtMA1 and EtMA2 were superfamily proteins of AMA, and which maybe play a key role in parasites invasion of host cells, and both of which will be as novel candidate vaccine for E. tenella.

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