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Aberrant Mucin Expression Profiles Associate With Pediatric Inflammatory Bowel Disease Presentation and Activity
Tom Breugelmans1,2, Wout Arras1,2, Lauren-Emma Boen1,2
1Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
Inflammatory Bowel Diseases
|October 14, 2022
Summary
Mucin expression is altered in pediatric inflammatory bowel disease (IBD) patients, correlating with disease activity. This suggests mucins could serve as diagnostic and management markers for IBD.
Area of Science:
- Gastroenterology
- Molecular Biology
- Pediatric Medicine
Background:
- Inflammatory bowel disease (IBD) management lacks objective molecular markers for intestinal mucosal healing.
- Dysregulated mucin expression is implicated in IBD mucosal barrier dysfunction.
Purpose of the Study:
- Investigate mucin expression in pediatric IBD patients.
- Correlate mucin expression with barrier mediators and clinical characteristics.
Main Methods:
- Quantified mRNA expression of mucins and barrier-related genes in colonic biopsies from pediatric IBD and non-IBD patients.
- Validated mucin expression at the protein level.
- Correlated mRNA expression with clinical data and disease activity indices.
Main Results:
- Increased MUC1, MUC3A, MUC4, and MUC13 mRNA in inflamed pediatric IBD colons.
- MUC13 mRNA associated with barrier mediators (CDH1, OCLN, TJP2).
- MUC1 and MUC3B mRNA distinguished IBD patients (90.6% AUCROC).
- Aberrant mucin expression differed between ulcerative colitis and Crohn's disease.
- Mucin expression correlated with clinical disease activity and endoscopic severity.
Conclusions:
- Colonic mucin expression is disturbed in pediatric IBD.
- Mucin expression associates with IBD disease activity and presentation.
- Mucins show potential as molecular markers for IBD diagnosis and management.
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