Dataset Information

Intelectin-1 binds and alters the localization of the mucus barrier-modifying bacterium Akkermansia muciniphila.

ABSTRACT: 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.

SUBMITTER: Matute JD

PROVIDER: S-EPMC9683900 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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Intelectin-1 binds and alters the localization of the mucus barrier-modifying bacterium Akkermansia muciniphila.

Matute Juan D JD Duan Jinzhi J Flak Magdalena B MB Griebel Paul P Tascon-Arcila Jose A JA Doms Shauni S Hanley Thomas T Antanaviciute Agne A Gundrum Jennifer J Mark Welch Jessica L JL Sit Brandon B Abtahi Shabnam S Fuhler Gwenny M GM Grootjans Joep J Tran Florian F Stengel Stephanie T ST White James R JR Krupka Niklas N Haller Dirk D Clare Simon S Lawley Trevor D TD Kaser Arthur A Simmons Alison A Glickman Jonathan N JN Bry Lynn L Rosenstiel Philip P Borisy Gary G Waldor Matthew K MK Baines John F JF Turner Jerrold R JR Blumberg Richard S RS

The Journal of experimental medicine 20221122 1

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, inclu ...[more]

PMID: 36413219

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Dataset Information

Intelectin-1 binds and alters the localization of the mucus barrier-modifying bacterium Akkermansia muciniphila.

Publications

Intelectin-1 binds and alters the localization of the mucus barrier-modifying bacterium Akkermansia muciniphila.

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