Unique Immunological Behaviour of CD8+ (Suppressor T Cell) Leukaemia Cells
- 1 November 1987
- journal article
- Published by Wiley in Scandinavian Journal of Immunology
- Vol. 26 (5), 487-493
- https://doi.org/10.1111/j.1365-3083.1987.tb02282.x
Abstract
A patient with chronic lymphocytic leukaemia and elevated serum IgM antibody is described. A multiparameter surface marker analysis of his peripheral blood lymphocytes demonstrated a unique phenotype of OKT3−, OKT11−, E-rosetting+, OKT4−, OKT8+, OKIal+, OKCLL+, OKDR−, Tac+, characterizing the disease as suppressor (CD8+) T cell chronic lymphocytic leukaemia. Because of the uncommon phenotype and the abnormal serum immunoglobulin pattern, in vitro functional assays were performed that showed decreased mitogenic response to the phytohaemagglutinin, but increased response to concanavalin A. However, these leukaemic T cells demonstrated phytohaemagglutinin-specific suppressor cell activity on normal blood lymphocytes. In vitro functional studies indicated that a defect in the patient's T cells may cause IgM hypergammaglobulinaemia. The regulatory function of the patient's T cells on immunoglobulin synthesis by normal B cells was found to be mediated by a soluble factor secreted from neoplastic T cells.Keywords
This publication has 27 references indexed in Scilit:
- The human T-cell leukemias: Clinical, cytomorphologic, immunophenotypic, and genotypic characteristicsHuman Pathology, 1986
- Heterogeneity of T-CLL defined by monoclonal antibodies in nine patientsClinical Immunology and Immunopathology, 1982
- ADULT T-CELL LYMPHOMA-LEUKAEMIA IN BLACKS FROM THE WEST INDIESThe Lancet, 1982
- Phenotypic heterogeneity and cellular origins of T cell malignanciesLeukemia Research, 1981
- Peripheral blood Ia-positive T cells. Increases in certain diseases and after immunization.The Journal of Experimental Medicine, 1980
- Aberrations of Suppressor T Cells in Human Graft-versus-Host DiseaseThe New England Journal of Medicine, 1979
- Characterization of a Suppressor-Cell LeukemiaThe New England Journal of Medicine, 1978
- The Sézary syndrome: a malignant proliferation of helper T cells.JCI Insight, 1976
- Single step separation of human T and B cells using AET treated SRBC rosettesJournal of Immunological Methods, 1976
- An improved rosetting assay for detection of human T lymphocytesJournal of Immunological Methods, 1974