Abstract：
:Development of microbiota-directed foods (MDFs) that selectively increase the abundance of beneficial human gut microbes, and their expressed functions, requires knowledge of both the bioactive components of MDFs and the mechanisms underlying microbe-microbe interactions. Here, gnotobiotic mice were colonized with a defined consortium of human-gut-derived bacterial strains and fed different combinations of 34 food-grade fibers added to a representative low-fiber diet consumed in the United States. Bioactive carbohydrates in fiber preparations targeting particular Bacteroides species were identified using community-wide quantitative proteomic analyses of bacterial gene expression coupled with forward genetic screens. Deliberate manipulation of community membership combined with administration of retrievable artificial food particles, consisting of paramagnetic microscopic beads coated with dietary polysaccharides, disclosed the contributions of targeted species to fiber degradation. Our approach, including the use of bead-based biosensors, defines nutrient-harvesting strategies that underlie, as well as alleviate, competition between Bacteroides and control the selectivity of MDF components.
journal_name
Celljournal_title
Cellauthors
Patnode ML,Beller ZW,Han ND,Cheng J,Peters SL,Terrapon N,Henrissat B,Le Gall S,Saulnier L,Hayashi DK,Meynier A,Vinoy S,Giannone RJ,Hettich RL,Gordon JIdoi
10.1016/j.cell.2019.08.011subject
Has Abstractpub_date
2019-09-19 00:00:00pages
59-73.e13issue
1eissn
0092-8674issn
1097-4172pii
S0092-8674(19)30899-2journal_volume
179pub_type
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