Cited by 135Inflammatory Bowel DiseaseBarrier Structure and Function StudiesGastrointestinal motility and disorders

Epithelial apoptosis is a prominent feature of the epithelial barrier disturbance in intestinal inflammation: effect of pro-inflammatory interleukin-13 on epithelial cell function

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Heller, F, Fromm, A, Gitter, A H, Mankertz, J, Schulzke, J-D·2008·Mucosal Immunology

Abstract

In ulcerative colitis, the T helper type 2 proinflammatory cytokine Interleukin-13 (IL-13) contributes as effector cytokine to the epithelial changes associated with disturbed epithelial barrier function. This study aimed to investigate the underlying mechanisms in a colonic epithelial cell culture model. For studying these epithelial features in response to proinflammatory cytokines epithelial apoptosis was investigated by TdT-mediated X-dUTP nick end labeling (TUNEL) staining in HT-29/B6 cell monolayers. In contrast to interferon-gamma, IL-13 significantly upregulated the apoptotic rate of cells, which was intensified by simultaneous exposure to tumor necrosis factor-alpha. That this has a direct functional influence on epithelial barrier was shown by the caspase inhibitor N-benzyloxycarbonyl-Val-Ala-Asp, which inhibited IL-13 induced apoptosis induction and concomitantly reversed the decrease in epithelial resistance by approximately 50%. Direct evidence for apoptotic rosettes at corresponding sites of barrier defects in the epithelium was obtained by conductance scanning. In addition, the pore-forming tight junction protein claudin-2 was found to be upregulated at protein and mRNA level. In conclusion, IL-13 disturbs intestinal barrier function through mechanisms including apoptosis induction and alteration of tight junction protein composition.

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Crossref · 10.1038/mi.2008.46

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Authors
Heller, F., Fromm, A., Gitter, A. H., Mankertz, J., & Schulzke, J.-D.
Affiliations
  • Stiftung Charité (DE)
  • Charité – Universitätsmedizin Berlin (DE)
Corresponding author
Schulzke, J-D
Venue
Mucosal Immunology
Publisher
Elsevier BV
Published
2008-11
Volume
1
Pages
S58-S61
ISSN
1933-0219 (ISSN-L)
OpenAlex
W2019628625
Cited by
135
References
15
Citations by year
2026: 11 · 2025: 7 · 2024: 11 · 2023: 10 · 2022: 8 · 2021: 15 · 2020: 12 · 2019: 5 · 2018: 9 · 2017: 11 · 2016: 1 · 2015: 3 · 2014: 3 · 2013: 10 · 2012: 7
FWCI
2.28
Type
journal article
Language
en
Open access
Locations
  • Mucosal Immunology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
IL-13, epithelial apoptosis, intestinal barrier dysfunction, ulcerative colitis, colonic epithelial cells, TNF-α, interferon-gamma, caspase inhibition, claudin-2, tight junction proteins, epithelial permeability, T helper type 2 cytokines
MeSH terms
Animals, Cell Line, Epithelial Cells, Epithelium, Humans, Inflammation, Membrane Proteins, Inflammatory Bowel Diseases, Cytokines, Apoptosis, Interleukin-13, Inflammation Mediators, Tight Junctions, Claudins

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