A monoclonal anti-DC1 antibody selectivity inhibits the generation of effector T cells mediating specific cytolytic activity

The products of the DC locus have been shown to be structurally different from those of the DR locus. In this paper it is shown that, unlike anti-DR antibodies, a monoclonal antibody directed against DC1 does not affect proliferation of T cells in response to alloantigens or soluble antigens or production of Ig in a pokeweed mitogen-stimulated in vitro culture. However, the anti-DC1 inhibits the generation of effector T cells mediating specific cytolytic activity, whereas no inhibitory effect can be observed on natural killer and antibody- dependent cytotoxic cell activities.