Abstract
Fucosylation of intestinal epithelial cells, catalyzed by fucosyltransferase 2 (Fut2), is a major glycosylation mechanism of host-microbiota symbiosis. Commensal bacteria induce epithelial fucosylation, and epithelial fucose is used as a dietary carbohydrate by many of these bacteria. However, the molecular and cellular mechanisms that regulate the induction of epithelial fucosylation are unknown. Here, we show that type 3 innate lymphoid cells (ILC3) induced intestinal epithelial Fut2 expression and fucosylation in mice. This induction required the cytokines interleukin-22 and lymphotoxin in a commensal bacteria-dependent and -independent manner, respectively. Disruption of intestinal fucosylation led to increased susceptibility to infection by Salmonella typhimurium. Our data reveal a role for ILC3 in shaping the gut microenvironment through the regulation of epithelial glycosylation.
Copyright © 2014, American Association for the Advancement of Science.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Base Sequence
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Disease Models, Animal
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Fucose / metabolism*
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Fucosyltransferases / genetics
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Fucosyltransferases / metabolism
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Galactoside 2-alpha-L-fucosyltransferase
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Germ-Free Life
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Glycosylation
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Goblet Cells / enzymology
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Goblet Cells / immunology
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Goblet Cells / microbiology
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Ileum / enzymology
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Ileum / immunology
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Ileum / microbiology
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Immunity, Innate*
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Interleukin-22
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Interleukins / immunology
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Intestinal Mucosa / enzymology
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Intestinal Mucosa / immunology*
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Intestinal Mucosa / microbiology
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Lymphocytes / immunology*
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Mice
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Mice, Inbred BALB C
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Mice, Inbred C57BL
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Mice, Mutant Strains
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Microbiota / immunology*
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Molecular Sequence Data
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Paneth Cells / enzymology
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Paneth Cells / immunology
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Paneth Cells / microbiology
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Salmonella Infections / immunology*
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Salmonella Infections / microbiology
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Salmonella typhimurium*
Substances
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Interleukins
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Fucose
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Fucosyltransferases
Associated data
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GENBANK/AB470733
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GENBANK/AB470734
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GENBANK/AB470735
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GENBANK/AB470736
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GENBANK/AB470737
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