Lymphocyte cytotoxicity to influenza virus-infected cells. II. Requirement for antibody and non-T lymphocytes. |
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Authors: | S B Greenberg B S Criswell H R Six R B Couch |
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Abstract: | Peripheral blood lymphocytes (PBL) obtained from humans were cytotoxic for influenza virus-infected target cells. The PBL were shown to have associated influenza virus anti-hemagglutinin antibody (AHAb) detectable only by radioimmunoassay. This antibody could be removed by incubating PBL at 37 degrees C for 30 min. The lymphocyte population that was effective in this system was nonadherent and nonphagocytic cells. PBL gave comparable levels of cytotoxicity when tested by using either a xenogeneic or allogeneic virus-infected target cell. These results indicate that lymphocyte cytotoxicity to influenza virus infected cells may be mediated by small quantities of antibody and by lymphocytes that possess characteristics of K cells. No evidence for T cell-mediated cytolysis was found with this xenogeneic system. |
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