全球微生物组:跨不同种群的核心和独特特征
Sherri Huang1,2, Diptaraj S Chaudhari3, Rohit Shukla2,4
1Kaiser Permanente San Leandro Medical Center, San Leandro, CA 94577, USA.
International journal of molecular sciences
|February 27, 2026
概括
这一元分析揭示了全球各个地区和年龄组的独特肠道微生物群签名. 主要的细菌系如 Firmicutes 和 Bacteroidetes 是普遍存在的,与年龄相关的变化和区域变化被观察到.
科学领域:
- 微生物组研究的研究.
- 人的肠道微生物群.
- 进行比较的基因组学.
背景情况:
- 之前的肠道微生物组研究缺乏标准化的方法,阻碍了广泛的结论.
- 了解肠道微生物组与地理,年龄和健康的关系至关重要.
研究的目的:
- 系统地分析不同地理区域和年龄组的肠道微生物群数据.
- 为了确定肠道微生物组成的全球模式和区域差异.
- 探索肠道微生物组中的与年龄相关的变化和健康相关性.
主要方法:
- 来自10,878个样本的16S rRNA测序数据的元分析.
- 包括来自五大洲27个国家的数据.
- 样本分层分为三个年龄组:AG01 (0-17),AG02 (18-64) 和AG03 (65+).
主要成果:
- 在全球范围内,Firmicutes,Bacteroidetes和Proteobacteria被确定为核心肠道类.
- 发现了独特的微生物群特征,细菌家族和属 (例如Bifidobacterium, Bacteroides) 的区域差异.
- 随着年龄的增长,行为细菌的丰度下降;细菌类从AG01增加到AG02. 喘相关的Enterobacteriaceae富含AG01,在北美最高.
结论:
- 肠道微生物组的组成因地理区域和年龄而异.
- 鉴定的微生物模式与饮食习惯,人口健康和衰老趋势相关.
- 这项研究提供了一个全面的全球概述人类肠道微生物群在不同的人口.
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