Consumption of human milk oligosaccharides by gut-related microbes

Angela Marcobal, Mariana Barboza, John W. Froehlich, David E. Block, J. Bruce German, Carlito B. Lebrilla, David A. Mills

Research output: Contribution to journalArticle

237 Scopus citations

Abstract

Human milk contains large amounts of complex oligosaccharides that putatively modulate the intestinal microbiota of breast-fed infants by acting as decoy binding sites for pathogens and as prebiotics for enrichment of beneficial bacteria. Several bifidobacterial species have been shown to grow well on human milk oligosaccharides. However, few data exist on other bacterial species. This work examined 16 bacterial strains belonging to 10 different genera for growth on human milk oligosaccharides. For this propose, a chemically defined medium, ZMB1, was used, which allows vigorous growth of a number of gut-related microorganisms in a fashion similar to complex media. Interestingly, Bifidobacterium longum subsp. infantis, Bacteroides fragilis, and Bacteroides vulgatus strains were able to metabolize milk oligosaccharides with high efficiency, whereas Enterococcus, Streptococcus, Veillonella, Eubacterium, Clostridium, and Escherichia coli strains grew less well or not at all. Mass spectrometry-based glycoprofiling of the oligosaccharide consumption behavior revealed a specific preference for fucosylated oligosaccharides by Bi. longum subsp. infantis and Ba. vulgatus. This work expands the current knowledge of human milk oligosaccharide consumption by gut microbes, revealing bacteroides as avid consumers of this substrate. These results provide insight on how human milk oligosaccharides shape the infant intestinal microbiota.

Original languageEnglish (US)
Pages (from-to)5334-5340
Number of pages7
JournalJournal of Agricultural and Food Chemistry
Volume58
Issue number9
DOIs
StatePublished - May 12 2010

Keywords

  • Bacteroides
  • Chemically defined medium
  • Gut microbiota
  • Human milk oligosaccharides
  • MALDI-FTICR-MS
  • ZMB1

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Chemistry(all)

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