T-cell receptor expressed on an autoreactive T-cell clone, clone 4. I. Induction of various T-receptor functions by anti-T idiotypic antibodies - PubMed (original) (raw)
T-cell receptor expressed on an autoreactive T-cell clone, clone 4. I. Induction of various T-receptor functions by anti-T idiotypic antibodies
K Tomonari. Cell Immunol. 1985 Nov.
Abstract
Three monoclonal antibodies (1G3, 2H11, and 3G12) specific for a syngeneic Ek-specific T-cell clone, clone 4, have been established. The antibodies specifically blocked not only the activation of the clone in response to the specific antigen Ek but also the activation by IL-2. Kinetic studies of the blocking activity revealed that the antibodies blocked activation not only through steric hindrance of the antigen-binding site of the receptor but also via inhibition of DNA synthesis. The antibodies induced unresponsiveness of the clone to the specific antigen Ek, but not to nonspecific activation by IL-2. The state of unresponsiveness induced by 1G3 continued for 14 days, the longest time so far examined. The recovery from the unresponsiveness (tolerance) was not observed unless the clone cells proliferated vigorously in response to IL-2. The idiotope recognised by 1G3 was different from that by 2H11 and/or 3G12. This might explain some functional differences elicited by the antibodies.
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