在无脊椎动物的补充系统中存在性通路的证据:在殖民地衣中识别终端补充复杂基因及其进化影响
Loriano Ballarin1, Anna Peronato1, Davide Malagoli2,3
1Department of Biology, University of Padova, 35131 Padova, Italy.
International journal of molecular sciences
|November 27, 2024
概括
一个由C3控制的新型补充通路存在于像Botryllus schlosseri.这样的衣动物中. 这一发现揭示了无脊椎动物细胞溶解的保存机制,弥合了先天性和适应性免疫进化.
科学领域:
- 免疫学 免疫学 免疫学
- 进化生物学 进化生物学
- 海洋生物学 海洋生物学
背景情况:
- 补体系统对于天生的免疫力至关重要,其无脊椎动物形式尚不清楚.
- 脊椎动物的终端补充通路涉及C5和C9的细胞溶解.
- 衣动物为无脊椎动物和脊椎动物之间的免疫系统进化提供了洞察力.
研究的目的:
- 为了研究一个终端补充通路的存在和功能,在布衣 Botryllus schlosseri.
- 了解先天性和适应性免疫组件的进化整合.
- 确定新的补充蛋白及其在无脊椎动物免疫力中的作用.
主要方法:
- 转录组分析以确定新的补充基因.
- 遗传学重建以确定进化关系.
- 使用细胞毒性莫鲁拉细胞进行免疫定位研究.
- 功能性测试用于评估基因表达和通路依赖性.
- 电子显微镜可视化细胞相互作用.
主要成果:
- 一个新的转录,BsITCCP,编码一个MACPF/LDLa域蛋白质,被确定.
- BsITCCP被转录在细胞毒性分子细胞中,其表达在非自我挑战时被上调.
- BsITCCP的表达取决于补充元件 BsC3.
- 莫鲁拉细胞与点细胞形成接触,这表明一种解机制.
结论:
- 博特里卢斯·施洛塞里 (Botryllus schlosseri) 具有C3调节的终端补充细胞溶解的途径.
- 这一途径挑战了对补充介导溶解的C5正位体的必要性.
- 这些发现表明,无脊椎动物中终端补充复合体的进化起源得到了保护.
- 这项研究促进了对补充系统进化和无脊椎动物免疫策略的理解.
关键词:
C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9 C9互补系统是互补的系统.补充系统的进化,补充系统的进化.没有脊椎动物无脊椎动物利蒂克的路径路径.终端补充复合体 终端补充复合体更多相关视频
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