首页> 外文期刊>Infection and immunity >FlaA, a putative flagellar outer sheath protein, is not an immunodominant antigen associated with Lyme disease.
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FlaA, a putative flagellar outer sheath protein, is not an immunodominant antigen associated with Lyme disease.

机译:FlaA,一种假定的鞭毛外鞘蛋白,不是与莱姆病相关的免疫优势抗原。

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FlaA was recently found to be associated with flagellar filaments of Borrelia burgdorferi. We tested whether antibodies to this protein are a good indicator of infection, as antibodies to FlaA proteins in other spirochetal infections show an increase in titer. Although overproduction of intact FlaA was highly toxic to Escherichia coli, truncated proteins which lacked the N-terminal signal sequence could be successfully overexpressed. Immunoblotting with sera from mammalian hosts infected with B. burgdorferi indicated that FlaA is not an immunodominant antigen in Lyme disease. However, sera from two patients reacted with both recombinant and native FlaA protein, suggesting that B. burgdorferi FlaA was antigenic and expressed in vivo.
机译:最近发现FlaA与伯氏疏螺旋体的鞭毛细丝有关。我们测试了针对这种蛋白质的抗体是否是感染的良好指标,因为在其他螺旋体感染中针对FlaA蛋白质的抗体显示滴度增加。尽管过量生产的完整FlaA对大肠杆菌具有很高的毒性,但缺少N末端信号序列的截短蛋白可以成功表达。来自感染伯氏疏螺旋体的哺乳动物宿主的血清免疫印迹表明,FlaA不是莱姆病的免疫优势抗原。但是,两名患者的血清与重组和天然FlaA蛋白都发生了反应,这表明B. burgdorferi FlaA具有抗原性并在体内表达。

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