海膜攻击综合体/珀福林超级家族演示了有毒和发育功能之间的进化过渡状态
Joachim M Surm1, Morani Landau1, Yaara Y Columbus-Shenkar1
1Department of Ecology, Evolution and Behavior, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, 9190401 Jerusalem, Israel.
Molecular biology and evolution
|April 27, 2024
概括
基因重复驱动创新,毒素被招募到毒药中. 研究人员发现,在海中,膜攻击综合体和珀福林家族 (MAC) 蛋白反向从毒细胞招募到非毒细胞,揭示了新的发育功能.
科学领域:
- 进化生物学是进化的生物学.
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 基因重复是进化创新的关键驱动力,特别是在产生动物毒素方面.
- 毒素进入毒素系统的招募记录得很好,但反向过程仍然不太了解.
研究的目的:
- 为了研究膜攻击综合体和利素家族 (MAC) 的进化史和功能作用,在类动物中.
- 为了提供证据,证明毒素从毒素反向招募到非毒性细胞功能.
主要方法:
- 用比较基因组学分析了各种类型的类动物的MAC基因家族.
- 模型海Nematostella vectensis被用于深入研究MAC类比物.
- 进行了基因淘汰实验,以评估内体内表达的MACs的功能.
主要成果:
- 发现MAC家族的成员被招募到珊瑚和海中的核细胞 (注射毒素的细胞),这表明它们作为毒素的祖先作用.
- 在Nematostella vectensis中,三个MAC成员经历了谱系特异的重复,并被反向招募到内皮细胞中.
- 这些内体皮层MAC类型的淘汰导致发育异常,表明了基本的非毒性功能.
结论:
- 这项研究提供了第一个证据,证明毒素从毒素到生物体发育的反向招募.
- 祖先的MAC蛋白可能在被招募到非毒性发育途径之前,作为一种表达在核细胞中的毒素起作用.
- 这项研究揭示了毒药系统与基本生物过程之间的动态进化相互作用.
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