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- W1521156871 abstract "Abstract When cultured with autologous antigen-primed Leu-3+ lymphoblasts, Leu-2+ cells differentiate into suppressor T cells (Ts) that specifically inhibit the responses of fresh autologous Leu-3+ cells to the priming antigen. We have shown previously that the Leu-4/T3 (CD-3) molecular complex and HLA-A,B molecules on the surface of Leu-3+ inducer blasts are recognized by Leu-2+ Ts during their differentiation. This study examines the role of various cell surface molecules expressed by Leu-2+ Ts during the inductive and effector phases of suppression. Leu-2+ cells were treated in the absence of complement with a variety of monoclonal antibodies recognizing distinct human lymphoid antigens either before or after their activation with alloantigen-primed Leu-3+ blasts. Antibodies to Leu-2/T8 (CD-8) and lymphocyte function-associated antigen-1 (LFA-1) (CDw-18) molecules inhibited not only the generation but also the effector function of Leu-2+ Ts. Although antibodies to Leu-4/T3 (CD-3) and Leu-5/T11 (CD-2) molecules caused profound inhibition of the activation of Ts, these antibodies failed to inhibit the effector function of Ts. On the contrary, anti-Leu-4 antibody consistently augmented the suppressor effect of Ts. Antibodies directed against Leu-1/T1 (CD-5), Leu-3/T4 (CD-4), LFA-3, and class I (HLA-A,B,C) and class II (HLA-DR,DQ) major histocompatibility complex molecules had no effect on either the generation or the effector function of Ts. These results suggest the involvement of Leu-2/T8 (CD-8), Leu-4/T3 (CD-3), Leu-5/T11 (CD-2), and LFA-1 (CDw-18) molecules on the surfaces of Leu-2+ cells in the activation and effector functions of Ts." @default.
- W1521156871 created "2016-06-24" @default.
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- W1521156871 date "1985-09-01" @default.
- W1521156871 modified "2023-10-16" @default.
- W1521156871 title "Antigen-specific suppressor T lymphocytes in man make use of the same set of surface molecules as do cytolytic T lymphocytes: roles of Leu-2/T8, Leu-4/T3, Leu-5/T11, LFA-1 molecules." @default.
- W1521156871 doi "https://doi.org/10.4049/jimmunol.135.3.1724" @default.
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