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. 1987 May 1;165(5):1284–1295. doi: 10.1084/jem.165.5.1284

MHC-restricted minimal regulatory circuit initiated by a class II- autoreactive T cell clone

PMCID: PMC2188308  PMID: 2952750

Abstract

The in vivo administration of a self-class II-reactive Th clone MS202 derived from C3H into syngeneic mice resulted in the suppression of both primary and early secondary antibody responses against T cell- dependent antigens. The suppression was due to the generation of antigen-nonspecific Ts cells in the recipient, as the splenic T cells from the mice treated with MS202 were able to strongly suppress the in vitro secondary antibody response of primed syngeneic spleen cells. The dose-response curve of suppression indicated the generation of an effector type Ts that directly suppressed Th. The surface phenotype of Ts was Ly-1+,2-, L3T4+, I-J-. The presence of Ly-1+,2+ T cells was not required to induce the suppression. The suppression was strictly restricted to H-2k, as F1 Ts cells were able to suppress the response of C3H but not of B6 B cells helped by the same F1 Th cells. The experiments with chimeric mice indicated that the direct target of Ts is an MHC-restricted Th but not a B cell or APC. The results indicate the existence of a minimal regulatory circuit where an MHC-restricted Th induces a preprogrammed Ts that in turn directly suppresses Th with the same MHC-restriction specificity. The induction of and suppression by Ts appeared to be due to the direct recognition of MHC restriction sites of Th cells.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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