Bacterial DNA motifs trigger ANCA production in ANCA-associated vasculitis in remission
| Autor: | Cees G. M. Kallenberg, Peter Heeringa, Wayel H. Abdulahad, Henko Tadema, Coen A. Stegeman, Nikola Lepse |
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| Přispěvatelé: | Groningen Kidney Center (GKC), Translational Immunology Groningen (TRIGR) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Male
Anti-neutrophil cytoplasmic antibodies Remission Spontaneous Plasma cell urologic and male genital diseases Recurrence Aldesleukin immune system diseases CYCLOPHOSPHAMIDE Medicine Pharmacology (medical) SYSTEMIC-LUPUS-ERYTHEMATOSUS skin and connective tissue diseases Cells Cultured B-Lymphocytes biology Middle Aged Phenotype medicine.anatomical_structure Oligodeoxyribonucleotides CpG site Female Antibody CRESCENTIC GLOMERULONEPHRITIS Adult DNA Bacterial Vasculitis Staphylococcus aureus Naive B cell Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis PERIPHERAL-BLOOD Peripheral blood mononuclear cell Antibodies Antineutrophil Cytoplasmic WEGENERS-GRANULOMATOSIS Rheumatology NASAL CARRIAGE Humans Lymphocyte Count cardiovascular diseases Aged Anti-neutrophil cytoplasmic antibody STAPHYLOCOCCUS-AUREUS business.industry TLR9 Cytosine-phosphate-guanine oligodeoxynucleotide Bacterial DNA respiratory tract diseases RHEUMATOID-ARTHRITIS NAIVE B-CELLS Case-Control Studies Toll-Like Receptor 9 Immunology biology.protein Interleukin-2 MONOCLONAL-ANTIBODIES business B lymphocytes |
| Zdroj: | Rheumatology, 50(4), 689-696. Oxford University Press |
| ISSN: | 1462-0324 |
| DOI: | 10.1093/rheumatology/keq375 |
| Popis: | Objectives. CpG motifs, which are highly prevalent in bacterial DNA, have been shown to trigger the production of ANCA in vitro by B lymphocytes from patients with active ANCA-associated vasculitis (AAV). Staphylococcus aureus is associated with relapses in AAV, and CpG motifs from staphylococcal DNA may trigger ANCA production in AAV patients in remission. We investigated the presence of ANCA-producing B lymphocytes during quiescent disease and tested the capacity of these cells to produce ANCA in response to CpG. Methods. Expression of Toll-like receptor 9 (TLR9) by B lymphocytes from AAV patients and controls was assessed. Peripheral blood mononuclear cells were isolated from 23 PR3-ANCA and 15 MPO-ANCA patients (33 quiescent, 5 active disease) and 14 healthy controls, and cultured for 12 days in the presence of cytosine-phosphate-guanine oligodeoxynucleotide (CpG-ODN) and IL-2. B-lymphocyte activation, differentiation, immunoglobulin production and in vitro ANCA production were studied. Results. TLR9 expression by B lymphocytes was comparable in AAV patients and controls. B lymphocytes were activated and differentiated towards a plasma cell phenotype in response to CpG-ODN and IL-2. ANCA were produced in vitro by 13 out of 23 PR3-ANCA patients and 3 out of 15 MPO-ANCA patients. Conclusions. We conclude that ANCA-producing B lymphocytes can be present in the peripheral blood of AAV patients during remission. These autoreactive B lymphocytes are triggered by CpG-ODN and IL-2 to produce ANCA in vitro. CpG motifs may trigger the production of ANCA in vivo, contributing to the development of relapses in AAV. |
| Databáze: | OpenAIRE |
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