Abstract：
:Newborns are colonized with an intestinal microbiota shortly after birth, but the factors governing the retention and abundance of specific microbial lineages are unknown. Nursing infants consume human milk oligosaccharides (HMOs) that pass undigested to the distal gut, where they may be digested by microbes. We determined that the prominent neonate gut residents, Bacteroides thetaiotaomicron and Bacteroides fragilis, induce the same genes during HMO consumption that are used to harvest host mucus glycans, which are structurally similar to HMOs. Lacto-N-neotetraose, a specific HMO component, selects for HMO-adapted species such as Bifidobacterium infantis, which cannot use mucus, and provides a selective advantage to B. infantis in vivo when biassociated with B. thetaiotaomicron in the gnotobiotic mouse gut. This indicates that the complex oligosaccharide mixture within HMOs attracts both mutualistic mucus-adapted species and HMO-adapted bifidobacteria to the infant intestine that likely facilitate both milk and future solid food digestion.
journal_name
Cell Host Microbejournal_title
Cell host & microbeauthors
Marcobal A,Barboza M,Sonnenburg ED,Pudlo N,Martens EC,Desai P,Lebrilla CB,Weimer BC,Mills DA,German JB,Sonnenburg JLdoi
10.1016/j.chom.2011.10.007subject
Has Abstractpub_date
2011-11-17 00:00:00pages
507-14issue
5eissn
1931-3128issn
1934-6069pii
S1931-3128(11)00327-1journal_volume
10pub_type
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