Immunity (Cambridge, Mass.), 2012-09, Vol.37 (3), p.563-573
2012
Details
- Autor(en) / Beteiligte
- Titel
- Compromised Intestinal Epithelial Barrier Induces Adaptive Immune Compensation that Protects from Colitis
- Ist Teil von
- Immunity (Cambridge, Mass.), 2012-09, Vol.37 (3), p.563-573
- Ort / Verlag
- United States: Elsevier Inc
- Erscheinungsjahr
- 2012
- Link zum Volltext
- Quelle
- EZB Electronic Journals Library
- Beschreibungen/Notizen
- Mice lacking junctional adhesion molecule A (JAM-A, encoded by F11r) exhibit enhanced intestinal epithelial permeability, bacterial translocation, and elevated colonic lymphocyte numbers, yet do not develop colitis. To investigate the contribution of adaptive immune compensation in response to increased intestinal epithelial permeability, we examined the susceptibility of F11r−/−Rag1−/− mice to acute colitis. Although negligible contributions of adaptive immunity in F11r+/+Rag1−/− mice were observed, F11r−/−Rag1−/− mice exhibited increased microflora-dependent colitis. Elimination of T cell subsets and cytokine analyses revealed a protective role for TGF-β-producing CD4+ T cells in F11r−/− mice. Additionally, loss of JAM-A resulted in elevated mucosal and serum IgA that was dependent upon CD4+ T cells and TGF-β. Absence of IgA in F11r+/+Igha−/− mice did not affect disease, whereas F11r−/−Igha−/− mice displayed markedly increased susceptibility to acute injury-induced colitis. These data establish a role for adaptive immune-mediated protection from acute colitis under conditions of intestinal epithelial barrier compromise. [Display omitted] ► Increased gut permeability in JAM-A deficiency does not lead to spontaneous colitis ► Adaptive immune responses compensate for chronically enhanced colonic permeability ► Combined loss of barrier and adaptive immune cells exaggerates acute mucosal injury ► CD4 T cell-derived TGF-β and IgA protect from colitis in the presence of a leaky gut
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1074-7613, 1097-4180eISSN: 1097-4180DOI: 10.1016/j.immuni.2012.06.017Titel-ID: cdi_swepub_primary_oai_DiVA_org_liu_141654
- Format
- –
- Schlagworte
- Adaptive Immunity - genetics, Adaptive Immunity - immunology, Adaptive Immunity/genetics/immunology, Animals, Antibiotics, Bacterial Translocation - genetics, Bacterial Translocation - immunology, Bacterial Translocation/genetics/immunology, CD4-Positive T-Lymphocytes - immunology, CD4-Positive T-Lymphocytes - metabolism, CD4-Positive T-Lymphocytes/immunology/metabolism, Cell adhesion & migration, Cell Adhesion Molecules - genetics, Cell Adhesion Molecules - immunology, Cell Adhesion Molecules/genetics/immunology, Cell Surface/genetics/immunology, Colitis - chemically induced, Colitis - genetics, Colitis - immunology, Colitis/chemically induced/genetics/immunology, Dextran Sulfate, Disease, Epithelium - immunology, Epithelium - metabolism, Epithelium/immunology/metabolism, Female, Flow Cytometry, Gene Expression, Homeodomain Proteins - genetics, Homeodomain Proteins - immunology, Homeodomain Proteins/genetics/immunology, Immune system, Immunoglobulin A - genetics, Immunoglobulin A - immunology, Immunoglobulin A/genetics/immunology, Inbred C57BL, Inflammatory bowel disease, Intestinal Mucosa - immunology, Intestinal Mucosa - metabolism, Intestinal Mucosa - microbiology, Intestinal Mucosa/immunology/metabolism/microbiology, Intestines - immunology, Intestines - metabolism, Intestines - microbiology, Intestines/immunology/metabolism/microbiology, Knockout, Lymphocytes, Male, Medical research, Mice, Mice, Inbred C57BL, Mice, Knockout, Nutrition research, Permeability, Receptors, Receptors, Cell Surface - genetics, Receptors, Cell Surface - immunology, Reverse Transcriptase Polymerase Chain Reaction, Rodents, Small intestine, Studies, Transforming Growth Factor beta - genetics, Transforming Growth Factor beta - immunology, Transforming Growth Factor beta - metabolism, Transforming Growth Factor beta/genetics/immunology/metabolism