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Hattori S, Nishimura H, Tsurui H, Kato M, Endo N, Abe M, Akakura S, Mitsui K, Ishikawa S, Hirose S, Shirai T. L-Selectin-Specific Autoantibodies in Murine Lupus: Possible Involvement in Abnormal Homing and Polarization of CD4+ T Cell Subsets. THE JOURNAL OF IMMUNOLOGY 1998. [DOI: 10.4049/jimmunol.161.3.1231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
One notable functional abnormality in murine and human systemic lupus erythematosus (SLE) is the defect in the production of IL-2 in association with the deficit in naive CD4+ T cells. The mechanism is unknown, but one idea is that naturally occurring autoantibodies with specificities to the naive CD4+ T cell subpopulation are related to this event. We selected hybridoma monoclonal autoantibodies from SLE-prone (New Zealand Black (NZB) × New Zealand White (NZW))F1 mice that reacted with restricted populations of CD4+ T cells. One of these, H32, was specific for L-selectin, as determined by 1) distribution of Ag H32 on lymphoid cells similar to Mel-14, an epitope of L-selectin; 2) shedding of 80-kDa molecules with epitope H32 from the surface of lymph node cells coincidentally with Mel-14, when stimulated with phorbol ester; 3) cross-inhibitory activities on Ag binding between H32 and Mel-14; and 4) reactivity of H32 with recombinant mouse L-selectin. Pretreatment of 51Cr-labeled lymphocytes from BALB/c mice with H32 significantly inhibited their homing to lymph nodes in vivo. The BALB/c splenic H32+ CD4+ T cell subset produced few cytokines except IL-2, thus corresponding to naive ThP-type cells. This subset was markedly selectively depleted in aged (NZB × NZW)F1 mice. There was an age-associated increase in frequencies and titers of anti-L-selectin autoantibodies in sera from (NZB × NZW)F1 mice. Thus, abnormalities of naive CD4+ T cell subset, including IL-2 production in subjects with SLE, are at least partly attributed to the generation of autoantibodies to L-selectin.
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Affiliation(s)
- Susumu Hattori
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
| | - Hiroyuki Nishimura
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
- †Toin Human Science and Technology Center, Toin University of Yokohama, Kurogane-cho, Aoba-ku, Yokohama
| | - Hiromichi Tsurui
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
| | - Masayuki Kato
- †Toin Human Science and Technology Center, Toin University of Yokohama, Kurogane-cho, Aoba-ku, Yokohama
| | - Naoki Endo
- †Toin Human Science and Technology Center, Toin University of Yokohama, Kurogane-cho, Aoba-ku, Yokohama
| | - Masaaki Abe
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
| | - Shin Akakura
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
| | - Kenichi Mitsui
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
| | - Sho Ishikawa
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
| | - Sachiko Hirose
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
| | - Toshikazu Shirai
- *Department of Pathology, Juntendo University School of Medicine, Hongo Bunkyo-ku, Tokyo, Japan; and
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