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Foley SE, Tuohy C, Dunford M, Grey MJ, De Luca H, Cawley C, Szabady RL, Maldonado-Contreras A, Houghton JM, Ward DV, Mrsny RJ, McCormick BA. Gut microbiota regulation of P-glycoprotein in the intestinal epithelium in maintenance of homeostasis. Microbiome 2021; 9:183. [PMID: 34493329 PMCID: PMC8425172 DOI: 10.1186/s40168-021-01137-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/17/2021] [Indexed: 05/29/2023]
Abstract
BACKGROUND P-glycoprotein (P-gp) plays a critical role in protection of the intestinal epithelia by mediating efflux of drugs/xenobiotics from the intestinal mucosa into the gut lumen. Recent studies bring to light that P-gp also confers a critical link in communication between intestinal mucosal barrier function and the innate immune system. Yet, despite knowledge for over 10 years that P-gp plays a central role in gastrointestinal homeostasis, the precise molecular mechanism that controls its functional expression and regulation remains unclear. Here, we assessed how the intestinal microbiome drives P-gp expression and function. RESULTS We have identified a "functional core" microbiome of the intestinal gut community, specifically genera within the Clostridia and Bacilli classes, that is necessary and sufficient for P-gp induction in the intestinal epithelium in mouse models. Metagenomic analysis of this core microbial community revealed that short-chain fatty acid and secondary bile acid production positively associate with P-gp expression. We have further shown these two classes of microbiota-derived metabolites synergistically upregulate P-gp expression and function in vitro and in vivo. Moreover, in patients suffering from ulcerative colitis (UC), we find diminished P-gp expression coupled to the reduction of epithelial-derived anti-inflammatory endocannabinoids and luminal content (e.g., microbes or their metabolites) with a reduced capability to induce P-gp expression. CONCLUSION Overall, by means of both in vitro and in vivo studies as well as human subject sample analysis, we identify a mechanistic link between cooperative functional outputs of the complex microbial community and modulation of P-gp, an epithelial component, that functions to suppress overactive inflammation to maintain intestinal homeostasis. Hence, our data support a new cross-talk paradigm in microbiome regulation of mucosal inflammation. Video abstract.
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Affiliation(s)
- Sage E. Foley
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605 USA
- Program in Microbiome Dynamics, University of Massachusetts Medical School, Worcester, MA 01605 USA
| | - Christine Tuohy
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605 USA
- Graduate School of Nursing, University of Massachusetts Medical School, Worcester, MA 01605 USA
| | - Merran Dunford
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY UK
| | - Michael J. Grey
- Division of Gastroenterology and Nutrition, Department of Pediatrics, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Heidi De Luca
- Division of Gastroenterology and Nutrition, Department of Pediatrics, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115 USA
| | - Caitlin Cawley
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605 USA
- Program in Microbiome Dynamics, University of Massachusetts Medical School, Worcester, MA 01605 USA
| | - Rose L. Szabady
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605 USA
- Ferring Pharmaceuticals, San Diego, CA 92121 USA
| | - Ana Maldonado-Contreras
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605 USA
- Program in Microbiome Dynamics, University of Massachusetts Medical School, Worcester, MA 01605 USA
| | - Jean Marie Houghton
- Division of Gastroenterology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605 USA
| | - Doyle V. Ward
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605 USA
- Program in Microbiome Dynamics, University of Massachusetts Medical School, Worcester, MA 01605 USA
| | - Randall J. Mrsny
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY UK
| | - Beth A. McCormick
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605 USA
- Program in Microbiome Dynamics, University of Massachusetts Medical School, Worcester, MA 01605 USA
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