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Journal of Experimental Medicine, Vol 155, 1555-1560, Copyright © 1982 by Rockefeller University Press
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FM van Rappard-van der Veen, AG Rolink and E Gleichmann
By induction of a suitable graft-vs-host reaction (GVHR) in H-2- different F1 mice, one can induce the production of autoantibodies characteristic of systemic lupus erythematosus (SLE). The purpose of the present study was to define the intra-H-2 differences in the F1 recipients that are capable of triggering this process. A GVHR was induced in [B10.A(2R) x B10.A(4R)]F1 mice by injecting 10(8) lymphocytes from either parental strain. Whereas the donor B10.A(4R) induced a massive formation of autoantibodies to thymocytes, erythrocytes, nuclear antigens, and double-stranded DNA, the donor B10.A(2R) failed to do so. The intra-H-2 genetics of these two parent leads to F1 combinations are such that the observed autoantibody formation after the injection of B10.A(4R) T cells must have been triggered exclusively by the incompatible I-Ek subregion of the [B10.A(2R) x B10.A(4R)]F1 recipients. Because I-E appears to be the murine analogue of HLA-D/DR, this finding is of interest with respect to the increased frequency of certain HLA-DR alleles in SLE patients, as discussed.
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