Abstract: |
We observed that highly purified E‐rosette‐negative largely leukaemic B cells from 9 out of 15 patients with chronic lymphocytic leukaemia (CLL) significantly suppressed immunoglobulin production by mixtures of T4 and B cells from normal donors in the presence of pokeweed mitogen (PWM). This suppression by leukaemic B cells was concentration‐dependent. Addition of equal numbers of B cells from normal donor to the mixtures of normal T4 and B cells increased, or had no effect on the production of IgM, IgA, and IgG Treatment of purified largely leukaemic B cells from patterns with CLL with either the anti‐B1 or anti‐Leu 1 monoclonal antibody plus complement abolished their ability to suppress immunoglobulin production. In contrast, treatment with either the anti‐Leu 5 or the OKMI monoclonal antibody plus complement had no effect on the suppression. These results tugged that leukaemic B cells from certain patients with CLL may exhibit, or can be induced to exhibit, immunosuppressive properties. Copyright © 1988, Wiley Blackwell. All rights reserved |
Keywords: |
leukemia; human cell; phenotype; b lymphocyte; b-lymphocytes; antibodies, monoclonal; cell culture; chronic lymphatic leukemia; immunosuppressive agent; normal human; blood donors; immunoglobulins; antigens, differentiation, b-lymphocyte; leukemia, lymphocytic; human; priority journal; agammaglobulinemia; support, non-u.s. gov't; support, u.s. gov't, p.h.s.; immunoglobulin production; t-lymphocytes, suppressor-effector; pokeweed mitogen; antibody-producing cells
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