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Birchenough GMH, Schroeder BO, Sharba S, Arike L, Recktenwald CV, Puértolas-Balint F, Subramani MV, Hansson KT, Yilmaz B, Lindén SK, Bäckhed F, Hansson GC. Muc2-dependent microbial colonization of the jejunal mucus layer is diet sensitive and confers local resistance to enteric pathogen infection. Cell Rep 2023; 42:112084. [PMID: 36753416 PMCID: PMC10404306 DOI: 10.1016/j.celrep.2023.112084] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/12/2022] [Accepted: 01/23/2023] [Indexed: 02/09/2023] Open
Abstract
Intestinal mucus barriers normally prevent microbial infections but are sensitive to diet-dependent changes in the luminal environment. Here we demonstrate that mice fed a Western-style diet (WSD) suffer regiospecific failure of the mucus barrier in the small intestinal jejunum caused by diet-induced mucus aggregation. Mucus barrier disruption due to either WSD exposure or chromosomal Muc2 deletion results in collapse of the commensal jejunal microbiota, which in turn sensitizes mice to atypical jejunal colonization by the enteric pathogen Citrobacter rodentium. We illustrate the jejunal mucus layer as a microbial habitat, and link the regiospecific mucus dependency of the microbiota to distinctive properties of the jejunal niche. Together, our data demonstrate a symbiotic mucus-microbiota relationship that normally prevents jejunal pathogen colonization, but is highly sensitive to disruption by exposure to a WSD.
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Affiliation(s)
- George M H Birchenough
- Department of Medical Biochemistry & Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden; Wallenberg Centre for Molecular & Translational Medicine, University of Gothenburg, Gothenburg, Sweden.
| | - Bjoern O Schroeder
- Department of Molecular Biology and Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden; Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Sinan Sharba
- Department of Medical Biochemistry & Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Liisa Arike
- Department of Medical Biochemistry & Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Christian V Recktenwald
- Department of Medical Biochemistry & Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Fabiola Puértolas-Balint
- Department of Molecular Biology and Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
| | - Mahadevan V Subramani
- Department of Medical Biochemistry & Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden; Wallenberg Centre for Molecular & Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Karl T Hansson
- Department of Medical Biochemistry & Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden; Wallenberg Centre for Molecular & Translational Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Bahtiyar Yilmaz
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Sara K Lindén
- Department of Medical Biochemistry & Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Fredrik Bäckhed
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Gunnar C Hansson
- Department of Medical Biochemistry & Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
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