MHC class II A(α) and E(α) molecules determine the clonal deletion of V(β)6+ T cells. Studies with recombinant and transgenic mice

G. D. Anderson, S. Banerjee, C. S. David

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Abstract

Interactions between MHC class II genes and minor lymphocyte stimulating (Mls) associated products are responsible for clonally deleting self-reactive T cells in mice. Here we demonstrate the role of the intact I-A and I-E molecules as well as the individual A(α) chains in the deletion of cells bearing the V(β)6 TCR. DBA/1 (H-2(q), Mls-1a) mice were crossed with various inbred congenic, recombinant, and transgenic strains and the F1's were screened for V(β)6 expression. All I-E+ strains were fully permissive in deleting V(β)6+ T cells. I-E- strains expressing I-A(b.f.s.k.p.) permitted only partial deletion, while I-A(q) strains showed no deletion. Recombinant I-A(q) and I-A(f) strains which expressed E(α)(k) chain in the absence of E(β) chain showed a decrease in V(β)6+ T cells as compared to their H-2(q) and H-2(f) counterparts. Furthermore, transgenic mice expressing E(α)(k) A(β)(q) gene in an H-2(q) haplotype (E(α)(k) A(β)(q)?) gave similar results to that of the recombinants in deleting V(β)6 T-cells. The role of the I-A molecule was also shown by the partial deletion of V(β)6+ T cells in H-2(q) mice expressing transgenic I-A(k) molecules. These results demonstrate that the E(α) chain is important in the deletion of V(β)6 T-cells in Mls-1a mice. The role of A(α) chain is also implied by the permissiveness of E(α)(k) A(β)(q) but not A(α)(q) A(β)(q) molecules in the deletion of V(β)6+ T cells.

Original languageEnglish (US)
Pages (from-to)3757-3761
Number of pages5
JournalJournal of Immunology
Volume143
Issue number11
StatePublished - 1989

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Clonal Deletion
Transgenic Mice
T-Lymphocytes
Lymphocytes
Permissiveness
MHC Class II Genes
Haplotypes

ASJC Scopus subject areas

  • Immunology

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MHC class II A(α) and E(α) molecules determine the clonal deletion of V(β)6+ T cells. Studies with recombinant and transgenic mice. / Anderson, G. D.; Banerjee, S.; David, C. S.

In: Journal of Immunology, Vol. 143, No. 11, 1989, p. 3757-3761.

Research output: Contribution to journalArticle

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