数字农科院2.0

我国17株绵羊肺炎支原体分子分型及其菌体蛋白免疫印迹

文献类型： 中文期刊

作者： 许健;储岳峰;高鹏程;赵萍;贺英;剡根强;逯忠新

作者机构：

关键词： 绵羊肺炎支原体;AFLP;SDS-PAGE;免疫印迹

期刊名称：微生物学报

ISSN： 0001-6209

年卷期： 2011 年 51 卷 10 期

页码： 1421-1426

收录情况： 北大核心 ; CSCD

摘要： 【目的】分别从基因和蛋白水平研究我国部分地区绵羊肺炎支原体(Mycoplasma ovipneumoniae)分离株的分子特征,并了解其免疫原性蛋白的差异。【方法】对分离自8个地区的17株绵羊肺炎支原体进行扩增片段长度多态性(Amplified Fragment Length Polymorphism,AFLP)和十二烷基磺酸钠-聚丙烯酰胺凝胶电泳(Sodium Dodecyl Sulphate-Polyacrylamide Gel Electrophoresis,SDS-PAGE)分析,采用NTsys-2.10e软件对AFLP和SDS-PAGE结果进行聚类,并用绵羊肺炎支原体模式株Y98高免血清对部分分离株进行免疫印迹分析。【结果】当相似系数分别为0.78和0.85时,绵羊肺炎支原体分离株可根据8个来源地区分成8个AFLP群和8个SDS-PAGE群;用8株分离株进行免疫印迹共出现6条蛋白条带,分子质量分别为105 kDa、83 kDa、65 kDa、42 kDa、40 kDa或26 kDa,其中83 kDa和40 kDa蛋白为8个菌株保守的免疫原性蛋白。【结论】我国部分地区绵羊肺炎支原体分离株之间存在遗传差异,不同分离株的主要免疫原性蛋白也存在一定差异,但83 kDa和40 kDa蛋白为其保守的免疫原性蛋白。本研究首次对我国部分地区绵羊肺炎支原体分离株进行了分子分型与免疫印迹分析,结果将为绵羊肺炎支原体病的新型诊断技术开发和疫苗研制奠定理论基础。

分类号： S858.26

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