Journal
MBIO
Volume 11, Issue 1, Pages -Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/mBio.02179-19
Keywords
dietary fiber; gut microbiota; fiber specificity; fiber response
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Funding
- [W81XWH-17-1-0587]
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Dietary fibers can be utilized to shape the human gut microbiota. However, the outcomes from most dietary fibers currently used as prebiotics are a result of competition between microbes with overlapping abilities to utilize these fibers. Thus, divergent fiber responses are observed across individuals harboring distinct microbial communities. Here, we propose that dietary fibers can be classified hierarchically according to their specificity toward gut microbes. Highly specific fibers harbor chemical and physical characteristics that allow them to be utilized by only a narrow group of bacteria within the gut, reducing competition for that substrate. The use of such fibers as prebiotics targeted to specific microbes would result in predictable shifts independent of the background microbial composition.
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