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The Journal of Immunology, Vol 142, Issue 1 81-86, Copyright © 1989 by American Association of Immunologists

ARTICLES

T cell receptor beta-chain selection in human allograft rejection

MC Miceli and OJ Finn
Department of Microbiology and Immunology, Duke University Medical Center, Durham, NC 27710.

We have analyzed a series of T cell lines established from renal needle biopsies taken from renal allograft recipients with clinical signs of rejection. These T cells show strong cytotoxicity directed against donor HLA and their proliferative capacity in vitro is highly correlated with irreversible graft rejection. A total of 10 of 12 lines examined by Southern blot analysis using a J beta C beta DNA probe show predominant beta-chain rearrangements. In one instance DNA was isolated from cell lines generated from sequential biopsies taken from the same patient at different times of rejection. These lines show the same predominant beta-chain rearrangements. To determine whether these predominant rearrangements are due to expansion of a single clone or different T cell clones rearranging similar beta-chains, the same blots were analyzed with a J gamma probe. Cell line MH3 shows two predominant beta-chain rearrangements and at least seven of eight possible rearranged gamma-chain bands, implying that multiple clones share similar beta-chains. In contrast, the cell line King shows a single beta-chain and a single gamma-chain rearrangement. Many of the other cell lines fall between these two extremes, indicating that both beta- chain selection and clonal dominance are operating during graft rejection, resulting in the appearance of predominant beta-chain rearrangements.


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