在甲基动物中,NLR炎症酶的演化及其介导的灭
Jiejie Sun1,2, Jinyuan Leng1,2, Linsheng Song1,2,3
1Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian 116023, China.
International journal of molecular sciences
|October 26, 2024
概括
核酸结合性寡聚化域 (NOD) 类受体 (NLR) 炎症体在海绵中早期出现,在早期的甲基动物中出现了 pyroptosis. 这些古老的免疫系统后来在进化过程中在许多物种中消失了.
科学领域:
- 免疫学 免疫学 免疫学
- 进化生物学 进化生物学
- 基因组学就是基因组学.
背景情况:
- 核酸结合寡聚化域 (NOD) 类受体 (NLR) 炎症体对炎症反应和抗菌防御至关重要.
- 了解这些平台的进化起源是理解超级动物内在免疫力的关键.
研究的目的:
- 系统地分析NLR,Caspase-1和gasdermin (GSDM) 同类物在甲基动物中的分布,结构特征和进化关系.
- 调查NLR炎症体和热的早期出现和进化轨迹.
主要方法:
- 在各种元动物物种中对NLR,Caspase-1和GSDM同类的基因组分析.
- 遗传学分析以确定进化关系.
- 关键蛋白质域 (CARD/Death) 的结构比较和保存裂变点的识别.
主要成果:
- 从海绵开始就存在NLRs,海绵NLRs代表了最原始的形式.
- 在各种甲动物群中发现了Caspase-1同类物,它们的激活部位保留了.
- 能够诱导热的NLR炎症酶很可能出现在早期的甲基动物 (Coelenterata) 中,但随后在许多血统中消失了.
结论:
- NLR炎症酶的起源很古老,可以追溯到早期的海绵.
- 炎症酶介导的灭症在甲动物进化的早期出现,这表明它在先天免疫力中的基本作用.
- 在某些物种中,这些通路的丧失凸显了免疫系统进化的动态性质.
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