微生物群
效应器
基因组
生物
自噬
计算生物学
细胞生物学
免疫系统
失调
基因
遗传学
细胞凋亡
作者
Frank J. Piscotta,Shawn T. Whitfield,Toshiki G. Nakashige,Andréia Bergamo Estrela,Thahmina Ali,Sean F. Brady
出处
期刊:Cell Reports
[Elsevier]
日期:2021-09-01
卷期号:36 (12): 109746-109746
被引量:4
标识
DOI:10.1016/j.celrep.2021.109746
摘要
The human microbiota plays a critical role in host health. Proper development of the infant microbiome is particularly important. Its dysbiosis leads to both short-term health issues and long-term disorders lasting into adulthood. A central way in which the microbiome interacts with the host is through the production of effector molecules, such as proteins and small molecules. Here, a metagenomic library constructed from 14 infant stool microbiomes is analyzed for the production of effectors that modulate three distinct host pathways: immune response (nuclear factor κB [NF-κB] activation), autophagy (LC3-B puncta formation), and redox potential (NADH:NAD ratio). We identify microbiome-encoded bioactive metabolites, including commendamide and hydrogen sulfide and their associated biosynthetic genes, as well as a previously uncharacterized autophagy-inducing operon from Klebsiella spp. This work extends our understanding of microbial effector molecules that are known to influence host pathways. Parallel functional screening of metagenomic libraries can be easily expanded to investigate additional host processes.
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