Measurement for canine IgE using canine recombinant high affinity IgE receptor alpha chain (Fc epsilon RI alpha ).

摘要

To detect allergen-specific IgE in dogs with allergic diseases, we developed a recombinant canine high affinity IgE receptor alpha chain (Fc epsilon RI alpha )-based IgE detection system. Using the recombinant protein of canine Fc epsilon RI alpha expressed by an Escherichia coli expression system, we could detect house dust mite (Dermatophagoides farinae) allergen-specific IgE in sera from dogs naturally and experimentally sensitized to this allergen with ELISA and western blotting. The IgE binding activity of recombinant canine Fc epsilon RI alpha on ELISA was impaired by heat treatment of these sera. The specificity of this recombinant canine Fc epsilon RI alpha -based IgE detection system was confirmed by inhibition assays with canine IgE. The recombinant canine Fc epsilon RI alpha -based IgE detection system established in this study offers an alternative tool to measure allergen-specific IgE in dogs.CAS Registry Numbers 37341-29-0