Abstract
After injection of radiometal labeled antibodies, the radionuclide accumulates in the liver. This might be altered by a metabolizable linkage between metal chelate and antibody. Four benzyl-EDTA chelating agents were synthesized and conjugated to mouse monoclonal antibody Lym-1. Liver uptake of 111In in nontumored mice 72 h after injection was 2.2, 13.4, 7.6 and 20% for disulfide, thioether, thiourea or peptide linkages, respectively. 111In excreted in the urine was still in the benzyl-EDTA chelate form, as shown by binding to a specific anti-chelate antibody.
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Schedule a callMore From: International Journal of Radiation Applications and Instrumentation. Part B. Nuclear Medicine and Biology
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