Projects per year
Abstract
Abnormal immune responses to the resident gut microbiome can drive inflammatory bowel disease (IBD). Here, we combine high-resolution, culture-based shotgun metagenomic sequencing and analysis with matched host transcriptomics across three intestinal sites (terminal ileum, cecum, rectum) from pediatric IBD (PIBD) patients (n = 58) and matched controls (n = 42) to investigate this relationship. Combining our site-specific approach with bacterial culturing, we establish a cohort-specific bacterial culture collection, comprising 6,620 isolates (170 distinct species, 32 putative novel), cultured from 286 mucosal biopsies. Phylogeny-based, clade-specific metagenomic analysis identifies key, functionally distinct Enterococcus clades associated with either IBD or health. Strain-specific in vitro validation demonstrates differences in cell cytotoxicity and inflammatory signaling in intestinal epithelial cells, consistent with the colonic mucosa-specific response measured in patients with IBD. This demonstrates the importance of strain-specific phenotypes and consideration of anatomical sites in exploring the dysregulated host-bacterial interactions in IBD.
Original language | English |
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Article number | 101124 |
Number of pages | 14 |
Journal | Cell Reports Medicine |
Volume | 4 |
Issue number | 7 |
DOIs | |
Publication status | Published - 18 Jul 2023 |
Keywords
- cell death
- Enterococcus
- epithelial cells
- gastrointestinal tract
- host-microbe interactions
- inflammatory bowel disease
- metagenomic
- microbiome
- pediatric IBD
- ulcerative colitis
Projects
- 4 Finished
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Innate mucosal sensing & shaping of the human-microbiome
Hertzog, P. (Primary Chief Investigator (PCI)), Wells, C. (Chief Investigator (CI)), Hartland, E. (Chief Investigator (CI)) & Forster, S. (Chief Investigator (CI))
National Health and Medical Research Council (NHMRC) (Australia)
1/01/20 → 31/12/24
Project: Research
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Microbiome derived candidates to revolutionise treatment of inflammatory bowel disease
Forster, S. (Primary Chief Investigator (PCI)) & Giles, E. (Chief Investigator (CI))
1/01/20 → 31/12/23
Project: Research
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Phenotypic, genomic and informatic characterization of host-microbiota interactions to improve human health
Forster, S. (Primary Chief Investigator (PCI))
National Health and Medical Research Council (NHMRC) (Australia)
1/01/19 → 31/12/22
Project: Research
Equipment
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MHTP Medical Genomics Facility
Wilson, T. (Manager)
Hudson Institute - Department of Molecular and Translational ScienceFacility/equipment: Facility