中国寄生虫学与寄生虫病杂志 ›› 2017, Vol. 35 ›› Issue (1): 24-29.

• 论著 • 上一篇    下一篇

旋毛虫成虫排泄分泌蛋白组分分析

杨小迪1, 陶志勇1, 程洋2, 吴琦1, 王小莉1, 宋迪1, 徐岚松1, 薛仁敏1, 常雪莲1, 张慧1, 汪瑞1, 陈兴智1, 方强1,*()   

  1. 1蚌埠医学院病原生物学教研室,安徽省感染与免疫重点实验室,蚌埠233030
    2江南大学无锡医学院病原感染与免疫组,无锡214122
  • 收稿日期:2016-09-17 出版日期:2017-02-28 发布日期:2017-03-06
  • 通讯作者: 方强
  • 基金资助:
    国家自然科学基金(No. 81441120);安徽省自然科学基金(No. 1508085QH158);安徽高校科研创新平台团队项目(2016-40);安徽省高校优秀青年人才支持计划重点项目(No. gxyqZD2016159);安徽省高等学校自然科学研究重点项目(No. KJ2016A708,KJ2015A146)

Component analysis of excretory/secretory protein from Trichinella spiralis adult worm

Xiao-di YANG1, Zhi-yong TAO1, Yang CHENG2, Qi WU1, Xiao-li WANG1, Di SONG1, Lan-song XU1, Ren-min XUE1, Xue-lian CHANG1, Hui Zhang1, Rui WANG1, Xing-zhi CHEN1, Qiang FANG1,*()   

  1. 1 Department of Microbiology and Parasitology, Anhui Key Laboratory of Infection and Immunity, Bengbu Medical College, Bengbu 233030, China
    2 Department of Pathogenic Infection and Immunity, Wuxi Medical School, Jiangnan University, Wuxi 214122, China
  • Received:2016-09-17 Online:2017-02-28 Published:2017-03-06
  • Contact: Qiang FANG
  • Supported by:
    Supported by the National Natural Science Foundation of China(No. 81441120);The Natural Science Fund of Anhui(No. 1508085QH158);The Scientific Research Innovation Team Project of Anhui Colleges and Universities(2016-40);Key Supporting Project of Prominent Youth in University of Anhui(No. gxyqZD2016159);The Key Project of Anhui Education Department(No. KJ2016A708,KJ2015A146)

摘要:

目的 通过“鸟枪法”(shotgun技术)分析旋毛虫(Trichinella spiralis)成虫排泄分泌蛋白(adult worm excretory/secretory protein,AWESP)的组分,寻找其调节人炎症性肠炎的活性成分。方法 制备旋毛虫AWESP,经十二烷基硫酸钠-聚丙烯酰胺凝胶电泳(SDS-PAGE)分离酶解后,采用shotgun液相色谱-串联质谱系统鉴定,将分析所得的数据通过Masco软件进行数据库检索,完成蛋白的鉴定,并对鉴定出的蛋白从细胞组分、分子功能和生物学途径3个方面进行Gene Ontology(GO)分类。结果 SDS-PAGE分离的旋毛虫AWESP相对分子质量(Mr)约15 000~116 000,质谱分析共获得280个蛋白,通过Masco软件检索已鉴定的蛋白为96种,假定的蛋白为98种,未鉴定的蛋白为86种。已初步发现至少有4种蛋白可能具有潜在的调节人炎症性肠炎的作用,包括半胱氨酸蛋白酶抑制剂、丝氨酸蛋白酶、53 000排泄/分泌抗原和谷胱氨肽转移酶。GO工具分析显示,已鉴定的蛋白具有104种分子功能,参与了363种生物过程。结论 经Masco软件检索,旋毛虫AWESP成分复杂多样,已鉴定的蛋白有96种,从已明确的蛋白中初步筛选出4种与调节人炎症性肠炎潜在相关的蛋白。

关键词: 旋毛虫, 成虫, 排泄分泌蛋白, shotgun技术, 炎症性肠炎

Abstract:

Objective To analyze the component of adult worm excretory/secretory protein(AWESP) from Trichinella spiralis using the shotgun method, and find out the active component underlying its regulatory effect on colitis in humans. Methods The T. spiralis AWESP was prepared, separated by SDS-PAGE, lysed with trypsin, and analyzed by shotgun LC-MS/MS. The protein components were determined with the Masco software and classified using the Gene Ontology(GO) method in cellular components, molecular functions, and biological processes. Results The AWESPs isolated by SDS-PAGE had a Mr of 15 000-116 000. A total of 280 proteins were revealed by LC-MS/MS, of which 96 were identified by Masco software, 98 were putative, and the remaining 86 were unclear. Preliminary results showed that 4 proteins had regulatory potential for colitis, including cysteine protease inhibitor, serine protease, 53 000 excretory/secretory antigen, and glutathione-S-transferase. GO enrichment analysis showed that the identified proteins had 104 different molecular functions, involved in 363 biological processes. Conclusion As revealed by the Masco software, T. spiralis AWESP has complex components and 96 have been identified in this study. Four of them are preliminarily shown to be associated with the anti-colitis effect of T. spiralis.

Key words: Trichinella spiralis, Excretory/secretory protein, Adult worm, Shotgun, Inflammatory bowel disease

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