Genetically restricted suppressor T-cell clones derived from lepromatous leprosy lesions
- 1 July 1986
- journal article
- Published by Springer Nature in Nature
- Vol. 322 (6078), 459-461
- https://doi.org/10.1038/322459a0
Abstract
Leprosy is a spectral disease in which immune responses to Mycobacterium leprae correlate with the clinical, bacteriological and histopathological manifestations of disease, so study of its pathology provides insights into immunoregulatory mechanisms in man. At the tuberculoid pole, patients have few lesions in the skin which contain rare organisms and are able to mount strong cell-mediated immune responses to M. leprae antigens. In contrast, at the lepromatous pole, patients have disseminated skin lesions containing large numbers of acid-fast bacilli and are selectively unresponsive to antigens of M. leprae. M. leprae-induced suppressor cells derived from peripheral blood have been reported to be active in vitro, yet their in vivo significance has remained unclear. Because the focal point of the immune response to M. leprae is the skin lesion consisting of lymphocytes and macrophages, we have recently developed methods for isolating lymphocytes from skin biopsies of leprosy patients. We report here that two T8 clones derived from lepromatous leprosy skin biopsies, in the presence of lepromin, suppress concanavalin A (Con-A) responses both of peripheral blood mononuclear cells and of T4 clones in an HLA-D (HLA, histocompatibility locus antigen)-restricted manner. Moreover, these T8 clones suppressed responses of HLA-D-matched, but not HLA-D-mismatched antigen-responsive T4 clones to M. leprae antigens, indicating that T-cell suppression is major histocompatibility complex (MHC)-restricted at some level in man.Keywords
This publication has 11 references indexed in Scilit:
- The veto phenomenon and T-cell regulationImmunology Today, 1986
- Genes for the major protein antigens of the leprosy parasite Mycobacterium lepraeNature, 1985
- I-J as a Restriction Element in the Suppressor T Cell SystemImmunological Reviews, 1985
- T3-Ti receptor triggering of T8+ suppressor T cells leads to unresponsiveness to interleukin-2Nature, 1984
- Immunological Unresponsiveness in LeprosyImmunological Reviews, 1984
- Selective Primary Health Care: Strategies for Control of Disease in the Developing World. V. LeprosyClinical Infectious Diseases, 1983
- Suppressor T cells control the HLA-linked low responsiveness to streptococcal antigen in manNature, 1983
- The Cutaneous Infiltrates of LeprosyNew England Journal of Medicine, 1982
- H-2-controlled suppression of T cell response to lactate dehydrogenase B. Characterization of the lactate dehydrogenase B suppressor pathway.The Journal of Experimental Medicine, 1982
- IN-VITRO LYMPHOPROLIFERATIVE RESPONSE TO MYCOBACTERIUM LEPRÆ OF HLA-D-IDENTICAL SIBLINGS OF LEPROMATOUS LEPROSY PATIENTSThe Lancet, 1978