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Chuen Zhang Lee^1,2, Sarah F Worsley³, Charli S Davies³

¹School of Biological Sciences, University of East Anglia, Norwich, Norfolk, UK. chuen.lee@uea.ac.uk.

|March 12, 2026

概括

主体主要基因相容性复合体 (MHC) 基因在野生塞舌尔海中影响肠道微生物组 (GM) 功能. 更高的MHC-I多样性增强了微生物防御能力,但降低了转基因代谢潜力,揭示了进化权衡.

科学领域:

免疫遗传学免疫遗传学
微生物组研究微生物组研究
进化生物学进化生物学

背景情况:

肠道微生物组 (GM) 对宿主健康至关重要,并受到宿主免疫遗传学的影响.
之前的研究还没有探讨主要基因相容性复合 (MHC) 基因对野生种群转基因功能的影响.

研究的目的:

为了研究MHC基因对塞舌尔鸟野生种群肠道微生物群的分类学和功能的影响.
为了评估MHC变异与转基因组合和功能之间的关系,使用Shotgun metagenomics.

主要方法:

枪支元基因组学被用来分析肠道微生物组.
这项研究的重点是塞舌尔大海 (Acrocephalus sechellensis) 的自然种群.
主体免疫遗传数据,特别是MHC基因,与转基因数据相关联.

主要成果:

MHC-II多样性与特定细菌丰度 (Lactococcus lactis,Staphylococcus lloydii) 的变化相关.
MHC-I等位基因 (Ase-ua 7) 与Enterococcus casselifavus,Gordonia sp OPL2,大肠杆菌和Vulcaniibacterium thermophilum.的变化有关. 这两种基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因.
增加MHC-I多样性与增强的微生物防御基因和减少的微生物代谢基因,以及更分散的转基因网络有关.

结论:

MHC变异,特别是MHC-I,显著塑造了肠道微生物组分类学和野生脊椎动物的功能.
在塞舌尔海,增加的MHC-I多样性导致了权衡:增强微生物防御,以牺牲减少的转基因代谢能力为代价.
这项研究提供了对微生物群健康的成本和益处以及转基因和免疫系统的共同进化方面的见解.

关键词:

这种动物是Acrocephalus sechellensis.我们的肠道微生物组.主要的组织相容性复杂.转基因组学是指转基因组学.野生种群的野生种群

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