在野生斑点子 (Crocuta crocuta) 中,粘膜免疫反应和肠道微生物组的关联
Susana P Veloso Soares1,2, Victor H Jarquín-Díaz3,4,5, Miguel M Veiga6,7
1Department of Ecological Dynamics, Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Strasse 17, 10315, Berlin, Germany. soares@izw-berlin.de.
Communications biology
|June 13, 2025
概括
野生狗表现出与免疫因素相关的与年龄相关的肠道微生物组相似之处,例如免疫球蛋白A和粘素. 这些发现突出了自然种群中宿主肠道相互作用.
科学领域:
- 生态生态学 生态生态学
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
背景情况:
- 肠道粘膜是宿主肠道微生物群相互作用的关键部位.
- 了解野生种群中的这些相互作用至关重要,但有限.
- 在自然环境中影响肠道微生物组合的因素需要进一步研究.
研究的目的:
- 调查野生斑点的肠道微生物群和粘膜免疫措施之间的关联.
- 在这些分析中控制宿主,社会和生态因素.
- 识别与免疫标记物相关的特定微生物种群.
主要方法:
- 在坦桑尼亚收集了158只野生斑点子 (Crocuta crocuta) 的199个便样本.
- 使用多安普利康方法对微生物组构成进行分析.
- 测量了便免疫球蛋白A (IgA) 和粘素水平.
主要成果:
- 根据年龄,IgA和粘素都预测了微生物组的相似性.
- 对细菌来说,关联是最强的,对寄生虫来说是中间的,对真菌来说是最弱的.
- 机器学习模型准确地预测了免疫措施,并确定了关键类型,包括共生细菌,未分类的细菌,虫和真菌.
结论:
- 主体免疫因子,特别是IgA和粘素,塑造了野的肠道微生物群.
- 年龄是调节这些宿主-微生物组-免疫关系的重要因素.
- 共生细菌,寄生虫和真菌是虫肠道生态系统的组成部分,受宿主免疫的影响.
相关概念视频
01:22Introduction to the Human Microbiota
Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity, and disease...
01:25Inflammatory Bowel Disease III: Crohn's Disease
Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...