title: Antibody-dependent cellular cytotoxicity by allosensitized human T cells.
abstract: Peripheral human T cells, isolated by sheep erythrocyte-rosette formation and density centrifugation, were highly cytotoxic to both Ab-coated autologous lymphocytes and antibody (Ab)-coated chicken erythrocytes when stimulated in mixed lymphocyte culture, but were not lytic when freshly purified, or when unstimulated in 6-day culture. Allosensitized T cells were shown to effect this activity by a specific effector-target cell interaction dependent on Ab, as indicated by: (a) induction of killing by Ab to target cells not lysed in the absence of Ab. (b) inhibition of Ab-dependent killing by aggregated Ig. The mechanism by which allosensitized T cells effect antibody-dependent cellular cytotoxicity is discussed.
mesh_terms: D000920:Antibody-Dependent Cell Cytotoxicity; D001665:Binding Sites; D006801:Humans; D007141:Immunoglobulin Fc Fragments; D007136:Immunoglobulins / Q000494:pharmacology; D007519:Isoantigens; D008213:Lymphocyte Activation; D007959:Lymphocyte Culture Test, Mixed; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D007141:Immunoglobulin Fc Fragments; D007136:Immunoglobulins; D007519:Isoantigens