首页> 外文期刊>Infection and immunity >Altered synthetic response of Campylobacter jejuni to cocultivation with human epithelial cells is associated with enhanced internalization.
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Altered synthetic response of Campylobacter jejuni to cocultivation with human epithelial cells is associated with enhanced internalization.

机译:空肠弯曲杆菌对与人上皮细胞共培养的合成反应的改变与内部化的增强有关。

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Campylobacter jejuni has been shown to bind to and enter epithelial cells in culture. The interaction of C. jejuni with INT 407 epithelial cells was examined to determine whether bacterial protein synthesis is required for either binding or internalization. Chloramphenicol, a selective inhibitor of bacterial protein synthesis, significantly reduced the internalization, but not binding, of C. jejuni compared with untreated controls as determined by protection from gentamicin. Electrophoretic analysis of metabolically labeled proteins revealed that C. jejuni cultured with INT 407 cells synthesized 14 proteins that were not detected in organisms cultured in medium alone. The inhibitory effect of chloramphenicol on internalization was reduced by preincubation of C. jejuni with INT 407 cells. The results indicate that C. jejuni, like some other enteric pathogens, engages in a directed response to cocultivation with epithelial cells by synthesizing one or more proteins that facilitate internalization and suggest that this phenomenon is relevant to the pathogenesis of enteritis caused by C. jejuni.
机译:空肠弯曲杆菌已显示可结合并进入培养物中的上皮细胞。检查空肠弯曲杆菌与INT 407上皮细胞的相互作用,以确定结合或内化是否需要细菌蛋白质合成。氯霉素是细菌蛋白质合成的一种选择性抑制剂,与庆大霉素的保护作用相比,与未经处理的对照相比,空肠弯曲杆菌的内在化作用但没有结合作用。代谢标记蛋白的电泳分析表明,用INT 407细胞培养的空肠弯曲杆菌合成了14种蛋白,而在单独培养的培养基中没有检测到这些蛋白。通过将空肠弯曲杆菌与INT 407细胞进行预孵育,可以降低氯霉素对内在化的抑制作用。结果表明,空肠弯曲杆菌与其他一些肠道病原体一样,通过合成一种或多种促进内在化的蛋白质参与与上皮细胞共培养的定向反应,并表明该现象与空肠弯曲杆菌引起的肠炎的发病机制有关。

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