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  • Title: Inhibition of natural killer-cell mediated cytolysis with monoclonal antibodies to restricted and non-restricted epitopes of the leucocyte common antigen.
    Author: Starling GC, Davidson SE, McKenzie JL, Hart DN.
    Journal: Immunology; 1987 Jul; 61(3):351-6. PubMed ID: 2440797.
    Abstract:
    Three monoclonal antibodies recognizing different epitopes of the leucocyte common molecule, CMRF-11 (against the restricted or B-220 leucocyte common molecule), CMRF-12 and CMRF-26 [each against a different epitope on the non-restricted or T200 leucocyte common (CD45) molecule], were tested for their effects on lymphocyte cytotoxicity. The individual monoclonal antibodies inhibited human natural killer cell-mediated cytolysis (NK-CMC) weakly, but a mixture of CMRF-11 + 12 + 26 antibodies inhibited cytolysis more consistently and to a greater extent. This mixture did not inhibit cytotoxic T lymphocytes derived from secondary mixed lymphocyte cultures. The CMRF-11 + 12 + 26 mix was shown to inhibit a post-conjugate formation stage of lysis at the effector cell level. Inhibition of NK-CMC of a wide range of target cells, including the T-cell lines Jurkat, HSB2 and Molt 4, was demonstrated.
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