title: Recognition of a site of a Kentucky bluegrass pollen allergen by antibodies in the sera of allergic and non-atopic humans and a murine monoclonal antibody.
abstract: Allergen 27 was isolated from the aqueous extract of Kentucky Bluegrass pollen (KBG-R) with a reversed immunosorbent prepared by coupling murine monoclonal antibody, Mab 27, to Sepharose 4B. Sera of patients allergic to KBG pollen, as well as serum of nonatopic individuals possessing anti-KBG antibodies, inhibited the binding of Mab 27 to either Ag 27 or KBG-R to the extent of 20 to 35% in ELISA. In contrast, sera devoid of antibodies to KBG-R had no inhibitory capacity. In a radioallergosorbent test, it was demonstrated that Mab 27 could inhibit the binding of human IgE antibodies to Ag 27 to the extent of 52%. From these results, it is concluded that Ag 27 contains a determinant recognized by both human IgE and blocking antibodies and a murine Mab.
mesh_terms: D000485:Allergens / Q000276:immunology*; D000911:Antibodies, Monoclonal / Q000276:immunology*; D000918:Antibody Specificity; D001667:Binding, Competitive; D000939:Epitopes; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology*; D007073:Immunoglobulin E / Q000276:immunology; D006109:Poaceae / Q000276:immunology*; D011058:Pollen / Q000276:immunology*; D011852:Radioallergosorbent Test
chemical_list: D000485:Allergens; D000911:Antibodies, Monoclonal; D000939:Epitopes; D007073:Immunoglobulin E