石格拉柔性菌通过蛋白质ADP-riboxanation逃避隔膜介导的细胞自主免疫
Zhiheng Tang1,2, Wei Xian1, Gizem Özbaykal Güler3
1Department of Microbiology and Infectious Disease Center, NHC Key Laboratory of Medical Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.
细菌Shigella flexneri通过使用OspC效应器逃避细胞自主免疫力. 这些蛋白质通过修改SEPT9来防止septin锁定病原体,从而帮助细菌扩散.
科学领域:
- 细胞微生物学 细胞微生物学
- 细菌病原体的发生.
- 宿主-病原体相互作用
背景情况:
- 细胞自主免疫利用细胞骨隔膜来捕捉细胞内细菌.
- 石格拉柔性菌采用III型分泌系统,将效应蛋白注入宿主细胞.
研究的目的:
- 为了调查Shigella flexneri如何逃避隔膜介导的陷.
- 阐明 OspC 效应器促进细菌逃离宿主细胞防御的机制.
主要方法:
- 研究了Shigella flexneri效应蛋白和宿主细胞隔膜之间的相互作用.
- 利用生物化学分析来分析SEPT9.9的翻译后修改.
- 研究了效应蛋白活性对隔膜聚合和子形成的影响.
主要成果:
- 已被证明,OspC效应器可以防止Shigella flexneri被隔膜所困.
- 在Arg561处,OspC催化了SEPT9的ADP-riboxanation,破坏了隔膜异质寡合体的稳定性和聚合.
- OspC 和 OspG 协同作用,对抗隔膜的捕获,促进细菌的复制和传播.
结论:
- 石格拉柔性菌采用复杂的策略,包括OspC介导的SEPT9修饰,以逃避细胞自主免疫.
- 了解这些细菌逃避机制为针对传染病的新型治疗干预开辟了潜在的途径.
更多相关视频
11:36Creation of a Dense Transposon Insertion Library Using Bacterial Conjugation in Enterobacterial Strains Such As Escherichia Coli or Shigella flexneri
Published on: September 23, 2017
04:56Author Spotlight: Advancements in Understanding and Combatting Shigella Infections
Published on: February 9, 2024
相关概念视频
The ADP/ATP Carrier Protein
Cell-mediated Immune Responses
Septins
Cytotoxic T Cells-mediated Immune Response
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Role of Septins
Cellular Functions of Septins
Recent studies have revealed the multifaceted roles of septins in various cellular processes such as cytokinesis, ciliogenesis, and neurogenesis. Septins act as scaffolds and...
Autonomic Nervous System
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
