MyD88 signaling in dendritic cells and the intestinal epithelium controls immunity against intestinal infection with C. rodentium.

2.50
Hdl Handle:
http://hdl.handle.net/10033/620944
Title:
MyD88 signaling in dendritic cells and the intestinal epithelium controls immunity against intestinal infection with C. rodentium.
Authors:
Friedrich, Christin; Mamareli, Panagiota; Thiemann, Sophie; Kruse, Friederike; Wang, Zuobai; Holzmann, Bernhard; Strowig, Till; Sparwasser, Tim ( 0000-0001-5645-902X ) ; Lochner, Matthias
Abstract:
MyD88-mediated signaling downstream of Toll-like receptors and the IL-1 receptor family is critically involved in the induction of protective host responses upon infections. Although it is known that MyD88-deficient mice are highly susceptible to a wide range of bacterial infections, the cell type-specific contribution of MyD88 in protecting the host against intestinal bacterial infection is only poorly understood. In order to investigate the importance of MyD88 in specific immune and nonimmune cell types during intestinal infection, we employed a novel murine knock-in model for MyD88 that enables the cell type-specific reactivation of functional MyD88 expression in otherwise MyD88-deficient mice. We report here that functional MyD88 signaling in CD11c+ cells was sufficient to activate intestinal dendritic cells (DC) and to induce the early group 3 innate lymphoid cell (ILC3) response as well as the development of colonic Th17/Th1 cells in response to infection with the intestinal pathogen C. rodentium. In contrast, restricting MyD88 signaling to several other cell types, including macrophages (MO), T cells or ILC3 did not induce efficient intestinal immune responses upon infection. However, we observed that the functional expression of MyD88 in intestinal epithelial cells (IEC) also partially protected the mice during intestinal infection, which was associated with enhanced epithelial barrier integrity and increased expression of the antimicrobial peptide RegIIIγ and the acute phase protein SAA1 by epithelial cells. Together, our data suggest that MyD88 signaling in DC and IEC is both essential and sufficient to induce a full spectrum of host responses upon intestinal infection with C. rodentium.
Affiliation:
TWINCORE, Zentrum für experimentelle und klinische Infektionsforschung GmbH, Feodor-Lynen Str.7, 30625 Hannover, Germany.
Citation:
MyD88 signaling in dendritic cells and the intestinal epithelium controls immunity against intestinal infection with C. rodentium. 2017, 13 (5):e1006357 PLoS Pathog.
Journal:
PLoS pathogens
Issue Date:
May-2017
URI:
http://hdl.handle.net/10033/620944
DOI:
10.1371/journal.ppat.1006357
PubMed ID:
28520792
Type:
Article
Language:
en
ISSN:
1553-7374
Appears in Collections:
publications of the research group microbial immune regulation (MIKI); publications of the TwinCore unit Infection immunology

Full metadata record

DC FieldValue Language
dc.contributor.authorFriedrich, Christinen
dc.contributor.authorMamareli, Panagiotaen
dc.contributor.authorThiemann, Sophieen
dc.contributor.authorKruse, Friederikeen
dc.contributor.authorWang, Zuobaien
dc.contributor.authorHolzmann, Bernharden
dc.contributor.authorStrowig, Tillen
dc.contributor.authorSparwasser, Timen
dc.contributor.authorLochner, Matthiasen
dc.date.accessioned2017-06-14T13:29:19Z-
dc.date.available2017-06-14T13:29:19Z-
dc.date.issued2017-05-
dc.identifier.citationMyD88 signaling in dendritic cells and the intestinal epithelium controls immunity against intestinal infection with C. rodentium. 2017, 13 (5):e1006357 PLoS Pathog.en
dc.identifier.issn1553-7374-
dc.identifier.pmid28520792-
dc.identifier.doi10.1371/journal.ppat.1006357-
dc.identifier.urihttp://hdl.handle.net/10033/620944-
dc.description.abstractMyD88-mediated signaling downstream of Toll-like receptors and the IL-1 receptor family is critically involved in the induction of protective host responses upon infections. Although it is known that MyD88-deficient mice are highly susceptible to a wide range of bacterial infections, the cell type-specific contribution of MyD88 in protecting the host against intestinal bacterial infection is only poorly understood. In order to investigate the importance of MyD88 in specific immune and nonimmune cell types during intestinal infection, we employed a novel murine knock-in model for MyD88 that enables the cell type-specific reactivation of functional MyD88 expression in otherwise MyD88-deficient mice. We report here that functional MyD88 signaling in CD11c+ cells was sufficient to activate intestinal dendritic cells (DC) and to induce the early group 3 innate lymphoid cell (ILC3) response as well as the development of colonic Th17/Th1 cells in response to infection with the intestinal pathogen C. rodentium. In contrast, restricting MyD88 signaling to several other cell types, including macrophages (MO), T cells or ILC3 did not induce efficient intestinal immune responses upon infection. However, we observed that the functional expression of MyD88 in intestinal epithelial cells (IEC) also partially protected the mice during intestinal infection, which was associated with enhanced epithelial barrier integrity and increased expression of the antimicrobial peptide RegIIIγ and the acute phase protein SAA1 by epithelial cells. Together, our data suggest that MyD88 signaling in DC and IEC is both essential and sufficient to induce a full spectrum of host responses upon intestinal infection with C. rodentium.en
dc.language.isoenen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/*
dc.titleMyD88 signaling in dendritic cells and the intestinal epithelium controls immunity against intestinal infection with C. rodentium.en
dc.typeArticleen
dc.contributor.departmentTWINCORE, Zentrum für experimentelle und klinische Infektionsforschung GmbH, Feodor-Lynen Str.7, 30625 Hannover, Germany.en
dc.identifier.journalPLoS pathogensen

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