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菌效应器的多层次行动来调节宿主Rab10的动态
Tomoko Kubori1, Kohei Arasaki2, Hiromu Oide2
1Department of Microbiology, Graduate School of Medicine, Gifu University, Gifu, Japan.
eLife
|May 21, 2024
概括
莱吉欧内拉肺炎菌通过ubiquitin信号操纵Rab10蛋白质的动态. 细菌效应器控制Rab10在真空球上的招募和保留,在感染期间微调宿主细胞的贩运.
科学领域:
- 细胞生物学 细胞生物学
- 微生物学 微生物学
- 分子生物学分子生物学
背景情况:
- 拉布GTPases是细胞内膜贩运的关键调节者.
- 细胞内细菌病原体,如Legionella pneumophila,劫持宿主细胞机械,包括Rab GTPases,以求生存和复制.
- 了解病原体效应机制对于破译宿主-病原体相互作用至关重要.
研究的目的:
- 为了调查Rab GTPase调节在莱吉欧内拉肺炎感染期间的作用.
- 阐明莱吉欧内拉菌操纵Rab10动态的分子机制.
- 确定参与控制Rab10的新型细菌效应剂.
主要方法:
- 利用了莱吉欧内拉肺炎菌株的基因操纵.
- 采用生物化学测试来研究无处不在和效应器活性.
- 进行活细胞成像,以追踪感染期间Rab10局部化.
主要成果:
- 莱吉欧内拉肺炎感染通过SideE和SidC效应体家族介导的泛素信号级联调节Rab10动态.
- 通过SIDE结合酶的基基化对Rab10在细菌真空中招募至关重要.
- 在SidC效应器SdcB保留Rab10在真空球上,而MavC抑制SdcB的功能,导致Rab10的去除.
结论:
- 肺炎杆菌使用细菌效应物的复杂相互作用来精确控制Rab10的动态.
- 这种对Rab10定位的微调对于病原体对宿主膜贩运的操纵至关重要.
- 这项研究揭示了与宿主-病原体相互作用的新机制,包括泛素信号传递和Rab GTPase调节.
关键词:
流感性肺炎病毒 (Legionella pneumophila) 是一种流感性肺炎病毒.拉布10 拉布10 拉布10效应器效应器是一个有效的效应器.传染病是一种传染性疾病.微生物学的微生物.在任何地方都是无处不在的.更多相关视频
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