Literature DB >> 2096914

Simplified method for conjugating macrocyclic bifunctional chelating agents to antibodies via 2-iminothiolane.

M J McCall1, H Diril, C F Meares.   

Abstract

A one-step method for conjugating macrocyclic chelators to antibodies using the protein modification reagent 2-iminothiolane controls aggregation, maintains immunoreactivity, and produces consistent chelate/antibody ratios. Conjugation conditions have been investigated with the macrocyclic chelates 6-[p-(bromoacetamido)benzyl]-1,4,8,11-tetraazacyclotetradecane-N,N ',N",N"'-tetraacetic acid and 2-[p-(bromoacetamido)benzyl]-1,4,7,10-tetraazacyclododecane-N,N',N ",N"'-tetraacetic acid, with three different monoclonal antibodies. The bifunctional chelating agents are prepared by bromoacetylation of their amine precursors using a two-phase H2O/CHCl3 system, which improves product purity.

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Year:  1990        PMID： 2096914     DOI： 10.1021/bc00003a007

Source DB:  PubMed          Journal:  Bioconjug Chem        ISSN： 1043-1802            Impact factor:   4.774


  10 in total

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