Attempts to obtain anti(D2 dopamine receptor) antibodies via the anti-idiotypic route

Five stable hybridomas have been obtained that secrete monoclonal antibodies against the D2-dopamine receptor-selective drug spiperone. Each monoclonal antibody has been characterized in terms of its ability to bind a range of dopamine-receptor-selective ligands. One monoclonal antibody has been purified by Protein A affinity chromatography and used to immunize mice. Anti-idiotypic antisera and one hybridoma secreting an anti-idiotypic monoclonal antibody were obtained and shown to inhibit [3H]spiperone binding to the anti-spiperone antibody used for immunization. Neither the antisera nor the anti-idiotypic monoclonal antibody, however, inhibited binding of [3H]spiperone to D2-dopamine receptors.