Journal article
Intelectin-1 binds and alters the localization of the mucus barrier-modifying bacterium Akkermansia muciniphila
- Abstract:
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Intelectin-1 (ITLN1) is a lectin secreted by intestinal epithelial cells (IECs) and upregulated in human ulcerative colitis (UC). We investigated how ITLN1 production is regulated in IECs and the biological effects of ITLN1 at the host–microbiota interface using mouse models. Our data show that ITLN1 upregulation in IECs from UC patients is a consequence of activating the unfolded protein response. Analysis of microbes coated by ITLN1 in vivo revealed a restricted subset of microorganisms, including the mucolytic bacterium Akkermansia muciniphila. Mice overexpressing intestinal ITLN1 exhibited decreased inner colonic mucus layer thickness and closer apposition of A. muciniphila to the epithelial cell surface, similar to alterations reported in UC. The changes in the inner mucus layer were microbiota and A. muciniphila dependent and associated with enhanced sensitivity to chemically induced and T cell–mediated colitis. We conclude that by determining the localization of a select group of bacteria to the mucus layer, ITLN1 modifies this critical barrier. Together, these findings may explain the impact of ITLN1 dysregulation on UC pathogenesis.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 6.4MB, Terms of use)
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- Publisher copy:
- 10.1084/jem.20211938
Authors
- Funder identifier:
- https://ror.org/029chgv08
- Grant:
- 102974/Z/13/Z
- 219523/Z/19/Z
- Funder identifier:
- https://ror.org/03x94j517
- Grant:
- MC_PC_MR/S025952/1
- Funder identifier:
- https://ror.org/001aqnf71
- Grant:
- MR/S036377/1
- Funder identifier:
- https://ror.org/01cwqze88
- Grant:
- DK051362
- Funder identifier:
- https://ror.org/0187kwz08
- Grant:
- NIHR201410
- Publisher:
- Rockefeller University Press
- Journal:
- Journal of Experimental Medicine More from this journal
- Volume:
- 220
- Issue:
- 1
- Article number:
- e20211938
- Publication date:
- 2022-11-22
- Acceptance date:
- 2022-10-13
- DOI:
- EISSN:
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1540-9538
- ISSN:
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0022-1007
- Pmid:
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36413219
- Language:
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English
- Keywords:
- Pubs id:
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1309900
- Local pid:
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pubs:1309900
- Deposit date:
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2024-09-16
Terms of use
- Copyright holder:
- Matute et al.
- Copyright date:
- 2022
- Rights statement:
- © 2022 Matute et al. This article is available under a Creative Commons License (Attribution 4.0 International, as described at https://creativecommons.org/licenses/by/4.0/)
- Licence:
- CC Attribution (CC BY)
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