Abstract
Clostridium difficile (Cd) infection (CDI) typically occurs after antibiotic usage perturbs the gut microbiota. Mucosa-associated invariant T cells (MAIT) are found in the gut and their development is dependent on Major histocompatibility complex-related protein 1 (MR1) and the host microbiome. Here we were interested in determining whether the absence of MR1 impacts resistance to CDI. To this end, wild-type (WT) and MR1-/- mice were treated with antibiotics and then infected with Cd spores. Surprisingly, MR1-/- mice exhibited resistance to Cd colonization. 16S rRNA gene sequencing of feces revealed inherent differences in microbial composition. This colonization resistance was transferred from MR1-/- to WT mice via fecal microbiota transplantation, suggesting that MR1-dependent factors influence the microbiota, leading to CDI susceptibility.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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Anti-Bacterial Agents / administration & dosage
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Anti-Bacterial Agents / adverse effects
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Cefoperazone / administration & dosage
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Cefoperazone / adverse effects
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Clostridium Infections / etiology
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Clostridium Infections / immunology*
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Clostridium Infections / microbiology
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Clostridium Infections / therapy
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Disease Models, Animal
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Disease Resistance / genetics*
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Disease Resistance / immunology
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Fecal Microbiota Transplantation
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Feces / microbiology
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Gastrointestinal Microbiome / drug effects
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Gastrointestinal Microbiome / immunology*
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Histocompatibility Antigens Class I / genetics*
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Histocompatibility Antigens Class I / immunology
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Humans
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Intestinal Mucosa / cytology
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Intestinal Mucosa / immunology
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Intestinal Mucosa / microbiology
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Mice
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Mice, Knockout
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Minor Histocompatibility Antigens / genetics*
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Minor Histocompatibility Antigens / immunology
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Mucosal-Associated Invariant T Cells / immunology
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Specific Pathogen-Free Organisms
Substances
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Anti-Bacterial Agents
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Histocompatibility Antigens Class I
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Minor Histocompatibility Antigens
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Mr1 protein, mouse
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Cefoperazone
Grants and funding
This work was also supported by an Inter-Agency Agreement to PC between the National Institutes for Health and Food and Drug administration (AAI17016-001-00001). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.