根据LuxO-OpaR的定数感应级联,可以差别控制Vibriophage VP882在液体和表面的溶解-溶解性决策
Francis J Santoriello1, Bonnie L Bassler1,2
1Department of Molecular Biology, Princeton University, Princeton, New Jersey, United States of America.
PLoS genetics
|July 30, 2024
概括
细菌的定数感应 (QS) 影响菌体 φVP882
科学领域:
- 细菌学 细菌学是一门学科.
- 微生物遗传学微生物遗传学
- 病毒学 病毒学
背景情况:
- 定数感应 (QS) 能够使细菌通过自身诱导分子协调群体行为.
- 振动体利用两个QS系统 (LuxO-OpaR和VqmA-VqmR) 调节生物膜的形成和运动.
- 菌体的菌体φVP882编码VqmAφ,从而触发高密度溶解原体中的溶解.
研究的目的:
- 调查QS是否控制新宿主细胞中由菌体φVP882建立的初始 lysogeny.
- 确定菌体 φVP882 如何将宿主细胞密度和环境线索 (液体与表面) 整合到其生命周期决策中.
主要方法:
- 细菌突变发生和菌体感染试验.
- 细菌和菌体行为的表型分析.
- 对QS调节器 (LuxO~P,OpaR) 和表面传感系统 (ScrABC) 的研究.
主要成果:
- 菌体φVP882的溶解-溶解决定与宿主细胞密度和环境有关.
- 低细胞密度的QS状态有利于lysogenic转化.
- 质量系统调节器LuxO~P促进浮游生物细胞中的溶解;ScrABC系统驱动表面相关细胞中的溶解.
结论:
- 体φVP882利用宿主QS和表面感应通路来决定溶解和溶解发生.
- 菌体整合了宿主细胞密度和环境线索,以实现最佳的传播.
- 这项研究揭示了温带菌体对宿主感官通路的复杂集成.
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