Ontology type: schema:ScholarlyArticle
2022-01-27
AUTHORSRobert H. Mills, Parambir S. Dulai, Yoshiki Vázquez-Baeza, Consuelo Sauceda, Noëmie Daniel, Romana R. Gerner, Lakshmi E. Batachari, Mario Malfavon, Qiyun Zhu, Kelly Weldon, Greg Humphrey, Marvic Carrillo-Terrazas, Lindsay DeRight Goldasich, MacKenzie Bryant, Manuela Raffatellu, Robert A. Quinn, Andrew T. Gewirtz, Benoit Chassaing, Hiutung Chu, William J. Sandborn, Pieter C. Dorrestein, Rob Knight, David J. Gonzalez
ABSTRACTUlcerative colitis (UC) is driven by disruptions in host–microbiota homoeostasis, but current treatments exclusively target host inflammatory pathways. To understand how host–microbiota interactions become disrupted in UC, we collected and analysed six faecal- or serum-based omic datasets (metaproteomic, metabolomic, metagenomic, metapeptidomic and amplicon sequencing profiles of faecal samples and proteomic profiles of serum samples) from 40 UC patients at a single inflammatory bowel disease centre, as well as various clinical, endoscopic and histologic measures of disease activity. A validation cohort of 210 samples (73 UC, 117 Crohn’s disease, 20 healthy controls) was collected and analysed separately and independently. Data integration across both cohorts showed that a subset of the clinically active UC patients had an overabundance of proteases that originated from the bacterium Bacteroides vulgatus. To test whether B. vulgatus proteases contribute to UC disease activity, we first profiled B. vulgatus proteases found in patients and bacterial cultures. Use of a broad-spectrum protease inhibitor improved B. vulgatus-induced barrier dysfunction in vitro, and prevented colitis in B. vulgatus monocolonized, IL10-deficient mice. Furthermore, transplantation of faeces from UC patients with a high abundance of B. vulgatus proteases into germfree mice induced colitis dependent on protease activity. These results, stemming from a multi-omics approach, improve understanding of functional microbiota alterations that drive UC and provide a resource for identifying other pathways that could be inhibited as a strategy to treat this disease. More... »
PAGES262-276
http://scigraph.springernature.com/pub.10.1038/s41564-021-01050-3
DOIhttp://dx.doi.org/10.1038/s41564-021-01050-3
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/35087228
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