Characterization of a polyclonal anti-Galα1-3Gal antibody from chicken

A polyclonal antibody was raised against the Gal alpha 1-3Gal carbohydrate epitope, which is expressed by all mammals (except man and the closest primate species) by immunizing hens with rabbit erythrocyte membranes. IgY was isolated from egg yolks, and affinity-purified on a Gal alpha 1-3Gal-Synsorb column. Two percent of the initial IgY fraction was recovered. The specificity of the affinity-purified antibody was characterized by: absorption with human, rabbit and pig erythrocytes; by using Synsorb columns; by inhibition with different saccharides; and by immunostaining of glycolipids separated on thin layer chromatograms. A weak reactivity was found toward blood group B or blood group P-k determinant, depending on the assay system used. Such reactivities were abolished after absorption by the appropriate sorbents, yielding a polyclonal anti-Gal alpha 1-3Gal antibody with narrow specificity.