Cited by 366Glycosylation and Glycoproteins ResearchInflammatory Bowel DiseaseCarbohydrate Chemistry and Synthesis

Loss of intestinal core 1–derived O-glycans causes spontaneous colitis in mice

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Fu, Jianxin, Wei, Bo, Wen, Tao, Johansson, Malin E.V., Liu, Xiaowei, Bradford, Emily, Thomsson, Kristina A., McGee, Samuel +9 more·2011·Journal of Clinical Investigation

Abstract

Mucin-type O-linked oligosaccharides (O-glycans) are primary components of the intestinal mucins that form the mucus gel layer overlying the gut epithelium. Impaired expression of intestinal O-glycans has been observed in patients with ulcerative colitis (UC), but its role in the etiology of this disease is unknown. Here, we report that mice with intestinal epithelial cell-specific deficiency of core 1-derived O-glycans, the predominant form of O-glycans, developed spontaneous colitis that resembled human UC, including massive myeloid infiltrates and crypt abscesses. The colitis manifested in these mice was also characterized by TNF-producing myeloid infiltrates in colon mucosa in the absence of lymphocytes, supporting an essential role for myeloid cells in colitis initiation. Furthermore, induced deletion of intestinal core 1-derived O-glycans caused spontaneous colitis in adult mice. These data indicate a causal role for the loss of core 1-derived O-glycans in colitis. Finally, we detected a biosynthetic intermediate typically exposed in the absence of core 1 O-glycan, Tn antigen, in the colon epithelium of a subset of UC patients. Somatic mutations in the X-linked gene that encodes core 1 β1,3-galactosyltransferase-specific chaperone 1 (C1GALT1C1, also known as Cosmc), which is essential for core 1 O-glycosylation, were found in Tn-positive epithelia. These data suggest what we believe to be a new molecular mechanism for the pathogenesis of UC.

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Crossref · 10.1172/jci45538

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  • The importance of sufficiently complex mucin glycans was demonstrated in studies of mice with truncated glycans as found in O-glycan core 1 or core 3 deficient mice.

    “The importance of sufficiently complex mucin glycans was demonstrated in studies of mice with truncated glycans as found in O-glycan core 1 or core 3 deficient mice 19, 28.”

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Authors
Fu, J., Wei, B., Wen, T., Johansson, M. E. V., Liu, X., Bradford, E., Thomsson, K. A., McGee, S., Mansour, L., Tong, M., McDaniel, J. M., Sferra, T. J., Turner, J. R., Chen, H., Hansson, G. C., Braun, J., & Xia, L.
Affiliations
  • Oklahoma Medical Research Foundation (US)
  • University of California, Los Angeles (US)
  • University of Gothenburg (SE)
  • Central South University (CN)
  • University of Chicago (US)
  • University of Oklahoma (US)
Corresponding author
Xia, Lijun
Venue
Journal of Clinical Investigation
Published
2011-04-01
Volume
121
Issue
4
Pages
1657-1666
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2051146429
Cited by
366
References
59
Citations by year
2026: 19 · 2025: 21 · 2024: 29 · 2023: 21 · 2022: 18 · 2021: 30 · 2020: 21 · 2019: 15 · 2018: 27 · 2017: 22 · 2016: 24 · 2015: 32 · 2014: 37 · 2013: 25 · 2012: 16
FWCI
11.16
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Oklahoma Medical Research Foundation
  • Stiftelsen för Strategisk Forskning
  • Central South University
  • Xiangya Hospital, Central South University
  • National Institute of Allergy and Infectious Diseases (U01AI095473)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P01DK046763, P01DK067887, R56DK094954, R01DK085691, R01DK061931)
  • National Center for Research Resources (RR 018758, P20RR018758)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glycosylation and Glycoproteins Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Physical Sciences › Chemistry › Organic Chemistry › Carbohydrate Chemistry and Synthesis
Keywords
core 1 O-glycans, ulcerative colitis, spontaneous colitis, intestinal epithelial cells, Tn antigen, Cosmc, crypt abscesses, TNF-α, colonic mucus, colitis pathogenesis, X-linked mutations
MeSH terms
Animals, Base Sequence, Colitis, Colon, Disease Models, Animal, Galactosyltransferases, Humans, Intestinal Mucosa, Mice, Inbred C57BL, Mice, Transgenic, Mutation, Polysaccharides, Antigens, Tumor-Associated, Carbohydrate, DNA Primers, Mice, Knockout, Molecular Chaperones, Mice, Mice, 129 Strain

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