| First Author | Kuroki A | Year | 2004 |
| Journal | Eur J Immunol | Volume | 34 |
| Issue | 4 | Pages | 1077-84 |
| PubMed ID | 15048718 | Mgi Jnum | J:88856 |
| Mgi Id | MGI:3037358 | Doi | 10.1002/eji.200424859 |
| Citation | Kuroki A, et al. (2004) Enforced Bcl-2 expression in B lymphocytes induces rheumatoid factor and anti-DNA production, but the Yaa mutation promotes only anti-DNA production. Eur J Immunol 34(4):1077-84 |
| abstractText | The presence of rheumatoid factors (RF) is a characteristic feature of patients with rheumatoid arthritis, but not systemic lupus erythematosus. In this study, we have explored the role of the anti-apoptotic Bcl-2 protein and the Y-linked autoimmune acceleration (Yaa) mutation in the production of IgG RF in comparison with IgG anti-DNA autoimmune responses. Analysis in C57BL/6 mice, in their F1 hybrids with lupus-prone NZW mice, and in bone marrow chimeras containing mixtures of C57BL/6 bcl-2-transgenic and BXSB non-transgenic cells demonstrated that an enforced Bcl-2 expression in B cells promoted the induction of IgG anti-DNA production in these mice, while significant IgG RF responses were observed only in mice developing high levels of gp70-anti-gp70 immune complexes and lethal glomerulonephritis. Moreover, in contrast to a synergistic interaction between the Yaa mutation and Bcl-2 overexpression on IgG anti-DNA production, the Yaa mutation failed to enhance the production of IgG RF induced in bcl-2-transgenic mice. Our results reveal that defects in the regulation of B cell apoptosis play a critical role in the production of IgG RF, and that the Yaa mutation differentially modulates RF and anti-DNA autoimmune responses, likely related to the nature of autoantigens involved in each autoimmune response. |
