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由Yersinia enterocolitica中截断的脂多糖对生命力和致病性的影响

Fan Wu¹, Fengyun Ren², Xixian Xie³

¹Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Bioengineering, Tianjin University of Science and Technology, Tianjin, 300457, China.

Applied microbiology and biotechnology

|September 20, 2023

概括

在Yersinia enterocolitica中,截断的脂多糖 (LPS) 损害了鞭毛组合,化学反应,并降低了病原性. 这项研究揭示了LPS结构如何影响细菌活力和感染,为食品安全策略提供了见解.

科学领域:

微生物学微生物学
分子生物学分子生物学
食品安全食品安全

背景情况:

Yersinia enterocolitica是一种常见的食源性病原体,其中快速信封应激反应影响其传播和病原性.
由waaF基因控制的脂聚糖 (LPS) 核心多糖生物合成对于Y. enterocolitica的包膜完整性至关重要.
由waaF删除而产生的截断的LPS会诱导细胞外应激,可能破坏细胞内信号传递和生理功能.

研究的目的:

为了研究由截断的LPS引起的Yersinia enterocolitica膜应激反应的机制.
识别受截断LPS影响的细胞功能,包括鞭毛组合,化疗和致病性.
阐明细胞内信号转导通路在应对LPS截断中的作用.

主要方法:

利用waaF删除来创建Yersinia enterocolitica中的一个截断的LPS模型.
采用转录组分析和表型验证来评估细胞功能.
进行了4D无标签的酸化分析,以调查信号传导通路.
使用IPEC-J2细胞模型评估细菌粘附,入侵和毒性.

主要成果:

缩短LPS显著降低了鞭毛细胞组合,细菌化学反应和伊诺西酸代谢.
截断的LPS导致体内和体外环境中的致病性和活力下降.
酸化分析证实,截断的LPS扰乱了多个细胞内信号转导通路,特别是影响了化学反应.
实验室试验表明,Y. enterocolitica与截断的LPS对IPEC-J2细胞的粘附性,入侵性和毒性降低.

结论:

截断的LPS通过影响鞭毛组合,化学反应和宿主细胞相互作用来负面调节Yersinia enterocolitica的活力和致病性.
了解LPS结构对细菌生理学的影响,可以了解Y. enterocolitica的病原性.
这些发现为开发新的食品安全战略和针对Y. enterocolitica感染的治疗干预措施开辟了新的途径.

关键词:

控制控制控制控制控制包裹压力反应应激反应.食物传播病原体的食物传播病原体脂聚糖类糖化物脂聚糖类糖化物机理机制机理机制致病性致病性致病性这种植物是Yersinia enterocolitica.

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