短链脂肪酸调解免疫反应与高海拔雅克的共生细菌之间的相互作用
Na Guo1,2, Nana Gou1, Fuyu Shi1,2
1State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, China.
Communications biology
|December 13, 2025
概括
雅克肠道微生物和免疫反应显示季节性变化,在温暖的季节达到能量和免疫力的高峰. 这突显了微生物群在高海拔适应中的可塑性.
科学领域:
- 动物生理学 动物生理学
- 微生物组研究的研究.
- 免疫学 免疫学 免疫学
背景情况:
- 宿主微生物群相互作用影响宿主新陈代谢和应激适应.
- 哺乳动物的免疫反应和肠道微生物群的季节性动态已知.
- 人们对极端环境中的动物的这些动态知之甚少.
研究的目的:
- 为了研究西藏雅克的荷尔蒙,免疫球蛋白和肠道微生物群的季节性模式.
- 探索雅克免疫系统与其全年肠道微生物群之间的相互作用.
主要方法:
- 每月对雅克荷尔蒙 (糖皮质类药物) 和免疫球蛋白 (IgA,IgG,IgM) 的分析.
- 使用16S rRNA测序进行便微生物群组成和多样性分析.
- 在雅克便中量化短链脂肪酸 (SCFA).
主要成果:
- 葡萄糖皮质醇水平在寒冷的季节达到峰值;IgA,IgG,IgM和SCFA在温暖的季节增加.
- 雅克便微生物群表现出季节性波动,其多样性较低,但在温暖的季节有更高的Firmicutes和Actinobacteria丰度.
- 特定的细菌种群 (Alistipes, Bacteroides, Romboutsia, Arthrobacter) 与SCFA和免疫球蛋白的季节性变化相关.
结论:
- 西藏雅克表现出同步的季节性免疫激活和能源生产与资源的可用性.
- 微生物群的可塑性在免疫灵活性中起着至关重要的作用,以适应雅克的高海拔适应.
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