Norovirus triggered microbiota-driven mucosal inflammation in interleukin 10-deficient mice

Basic M, Keubler LM, Buettner M, Achard M, Breves G, Schroeder B, Smoczek A, Joerns A, Wedekind D, Zschemisch NH, Günther C, Neumann D, Lienenklaus S, Weiss S, Hornef MW, Maehler M, Bleich A (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Inflammatory Bowel Diseases Wiley

Publisher: Wiley-Blackwell: No OnlineOpen

Book Volume: 20

Pages Range: 431-43

Journal Issue: 3

DOI: 10.1097/01.MIB.0000441346.86827.ed

Abstract

Infection may trigger clinically overt mucosal inflammation in patients with predisposition for inflammatory bowel disease. However, the impact of particular enteropathogenic microorganisms is ill-defined. In this study, the influence of murine norovirus (MNV) infection on clinical, histopathological, and immunological features of mucosal inflammation in the IL10-deficient (Il10) mouse model of inflammatory bowel disease was examined.C57BL/6J and C3H/HeJBir wild-type and Il10 mice kept under special pathogen-free conditions and devoid of clinical and histopathological signs of mucosal inflammation were monitored after MNV infection for structural and functional intestinal barrier changes by in situ MNV reverse transcription PCR, transgene reporter gene technology, histology, flux measurements, quantitative real-time PCR, immunohistology, and terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling assay. In addition, the influence of the enteric microbiota was analyzed in MNV-infected germfree Il10 mice.Although MNV-infected wild-type mice remained asymptomatic, mucosal inflammation was noted in previously healthy Il10 mice 2 to 4 weeks after infection. MNV-induced changes in Il10 mice included increased paracellular permeability indicated by increased mucosal mannitol flux, reduced gene expression of tight junction molecules, and an enhanced rate of epithelial apoptosis. MNV-induced reduction of tight junction protein expression and inflammatory lesions were absent in germfree Il10 mice, whereas epithelial apoptosis was still observed.Despite its subclinical course in wild-type animals, MNV causes epithelial barrier disruption in Il10 animals representing a potent colitogenic stimulus that largely depends on the presence of the enteric microbiota. MNV might thus trigger overt clinical disease in individuals with a nonsymptomatic predisposition for inflammatory bowel disease by impairment of the intestinal mucosa.

Authors with CRIS profile

Claudia Günther Department of Medicine 1 – Gastroenterology, Pneumology and Endocrinology

Involved external institutions

Medizinische Hochschule Hannover (MHH) / Hannover Medical School DE Germany (DE) Stiftung Tierärztliche Hochschule Hannover (TiHo) DE Germany (DE) Helmholtz-Zentrum für Infektionsforschung (HZI) DE Germany (DE) BioDoc - Labor für biomedizinische Diagnostik DE Germany (DE)

How to cite

APA:

Basic, M., Keubler, L.M., Buettner, M., Achard, M., Breves, G., Schroeder, B.,... Bleich, A. (2014). Norovirus triggered microbiota-driven mucosal inflammation in interleukin 10-deficient mice. Inflammatory Bowel Diseases, 20(3), 431-43. https://doi.org/10.1097/01.MIB.0000441346.86827.ed

MLA:

Basic, Marijana, et al. "Norovirus triggered microbiota-driven mucosal inflammation in interleukin 10-deficient mice." Inflammatory Bowel Diseases 20.3 (2014): 431-43.

BibTeX: Download