| First Author | Hueber W | Year | 2004 |
| Journal | Eur J Immunol | Volume | 34 |
| Issue | 6 | Pages | 1654-62 |
| PubMed ID | 15162435 | Mgi Jnum | J:115483 |
| Mgi Id | MGI:3691762 | Doi | 10.1002/eji.200324201 |
| Citation | Hueber W, et al. (2004) Characterization of novel antigens recognized by serum autoantibodies from anti-CD1 TCR-transgenic lupus mice. Eur J Immunol 34(6):1654-62 |
| abstractText | In this study, we further characterize the humoral autoimmune response in the recently described anti-CD1 autoreactive T cell receptor-transgenic mouse lupus model (CD1 lupus model). We discovered and characterized novel autoantigens, comprising a protein of 105 kDa (p105) and a novel RNA molecule of 140 base pairs (bp) that is likely associated with p105, and several additional factors with distinct biochemical properties. In the CD1 lupus model, lethally irradiated BALB/c/nu/nu mice were injected intravenously with sorted bone marrow cells and sorted splenic T cells from donor BALB/c mice expressing TCR alpha and beta transgenes that encode autoreactivity for CD1d. Adoptive hosts injected with the single-positive (CD4(+) and CD8(+)) subset of transgenic cells developed anti-double-stranded DNA antibodies and a lupus-like illness. Sera were analyzed by Western blotting and immunoprecipitation. Antigens were characterized by biochemical and serological methods. Serum autoantibodies from 5 of 12 (42%) CD1 lupus mice immunoprecipitated a 105-kDa protein, termed p105. p105 was associated with a small RNA of approximately 140 bp. Anti-p105 autoantibodies appeared early in the course of disease. Serological and biochemical characterization suggested that p105 was distinct from known lupus autoantigens of similar molecular masses, indicating that p105 represents a novel autoantigen in lupus. |
