通过NK细胞受体识别自我和病毒干
Roy A Mariuzza1,2, Pragya Singh1,3, Sharanbasappa S Karade1,2
1W. M. Keck Laboratory for Structural Biology, University of Maryland Institute for Bioscience and Biotechnology Research, Rockville, Maryland, USA.
Immunological reviews
|January 3, 2025
概括
自然杀手 (NK) 细胞受体结合各种联体来调节免疫反应. 结构研究显示,识别机制的多样性对于识别受感染或癌细胞至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 结构生物学 结构生物学
- 分子生物学分子生物学
背景情况:
- 自然杀手 (NK) 细胞对抗病毒感染和瘤的天生的免疫力至关重要.
- NK细胞的激活取决于NK细胞的受体,这些受体可以识别自我和非自我连接体.
- 这些受体包括C型莱克和免疫球蛋白超级家族成员,结合各种分子,如MHC,MHC相关的和非MHC连接体.
研究的目的:
- 对NK受体-联结体相互作用的结构性见解进行审查.
- 突出NK细胞识别的多样化分子解决方案.
- 了解这些相互作用如何调节NK细胞介导的细胞毒性.
主要方法:
- 结构确定NK受体与各种配体 (MHC,MHC类,非MHC) 结合.
- 分析结构数据以了解分子识别机制.
- 关于NK受体功能和演变的文献综述.
主要成果:
- 结构数据揭示了NK受体使用多种策略来结合多种连接体.
- 关键的NK受体如Ly49s,KIRs,LILRs,NKG2A/CD94和NKG2D与MHC I类和相关分子结合.
- 其他受体识别瘤抗原 (NKp30-46),粘附蛋白或病毒免疫酶.
结论:
- 在过去的25年里,结构生物学显著提高了我们对NK受体-连接体相互作用的理解.
- 多样化的识别机制对于NK细胞来说至关重要,它们可以区分健康的,感染的和癌细胞.
- 这些发现对于开发针对NK细胞活性的免疫疗法至关重要.
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