The dynamics of the human infant gut microbiome in development and in progression toward type 1 diabetes.

Cell Host Microbe
Authors
Keywords
Abstract

Colonization of the fetal and infant gut microbiome results in dynamic changes in diversity, which can impact disease susceptibility. To examine the relationship between human gut microbiome dynamics throughout infancy and type 1 diabetes (T1D), we examined a cohort of 33 infants genetically predisposed to T1D. Modeling trajectories of microbial abundances through infancy revealed a subset of microbial relationships shared across most subjects. Although strain composition of a given species was highly variable between individuals, it was stable within individuals throughout infancy. Metabolic composition and metabolic pathway abundance remained constant across time. A marked drop in alpha-diversity was observed in T1D progressors in the time window between seroconversion and T1D diagnosis, accompanied by spikes in inflammation-favoring organisms, gene functions, and serum and stool metabolites. This work identifies trends in the development of the human infant gut microbiome along with specific alterations that precede T1D onset and distinguish T1D progressors from nonprogressors.

Year of Publication
2015
Journal
Cell Host Microbe
Volume
17
Issue
2
Pages
260-73
Date Published
2015 Feb 11
ISSN
1934-6069
URL
DOI
10.1016/j.chom.2015.01.001
PubMed ID
25662751
PubMed Central ID
PMC4689191
Links
Grant list
P30 DK043351 / DK / NIDDK NIH HHS / United States
U54 DK102557 / DK / NIDDK NIH HHS / United States