在海鲜传播的病原体Vibrio parahaemolyticus中通过BfrR介导的生物膜调节
Hui Sun1, Miaomiao Zhang2, Jiancheng Wang3
1Department of Clinical Laboratory, Nantong Third People's Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong 226006, Jiangsu, China; School of Medicine, Nantong University, Nantong 226001, Jiangsu, China.
Food research international (Ottawa, Ont.)
|November 21, 2025
概括
一个关键的调节器,BfrR,控制了海鲜病原体Vibrio parahaemolyticus中生物膜的形成. 了解BfrR对于减少与这种细菌相关的食品安全风险至关重要.
科学领域:
- 微生物学 微生物学
- 食品安全 食品安全
- 细菌病原体的产生
背景情况:
- 维布里奥帕拉海莫利蒂库斯是一种重要的海鲜病原体.
- 由V. parahaemolyticus形成的生物膜增加了其持久性,抗生素耐药性,并引发了食品安全问题.
研究的目的:
- 为了识别和描述参与V. parahaemolyticus生物膜发展的调节者.
- 研究LysR型调节器BfrR在调节生物膜形成和相关表型中的作用.
主要方法:
- 基因操纵 (删除bfrR基因).
- 对生物膜形成,殖民地形态和细胞外基质组件的分析.
- 运动性的评估 (游泳和蜂群).
- 测量细胞内循环二GMP (c-di-GMP) 的水平.
- RNA测序 (RNA-seq) 用于识别BfrR调节的基因.
- 生物膜测定各种与食物接触的表面.
主要成果:
- 删除bfrR显著损害生物膜形成和改变殖民地形态.
- BfrR调节细胞外基质的产生 (外聚糖,蛋白质,细胞外DNA).
- BfrR表现出对运动的双重控制,抑制游泳和促进群聚.
- 通过调节GGDEF/EAL域蛋白基因,BfrR增加了细胞内c-di-GMP水平.
- RNA-seq确定了大约500个BfrR受影响的基因,包括生物膜,病毒性和鞭毛途径中的基因.
- BfrR对于,,不钢,塑料和玻璃等不同表面的生物膜形成至关重要.
结论:
- 在V. parahaemolyticus中,BfrR是生物膜形成的关键全球调节者.
- BfrR协调生物膜的发育,运动和c-di-GMP信号传递.
- 在食品工业中,BfrR是控制V. parahaemolyticus生物膜的潜在目标.
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