title: The adjuvant effect of stearyl tyrosine on a recombinant subunit hepatitis B surface antigen.
abstract: We describe the enhancement of the antibody response against hepatitis B surface Ag by octadecyl L-tyrosine, a synthetic adjuvant designed to exert its adjuvant effect in a manner similar to that of alum because it binds soluble Ag and releases it slowly from the site of injection. Our data demonstrate that octadecyl L-tyrosine showed a significant enhancement of the antihepatitis B surface Ag response compared to that of alum in the secondary response. The most striking difference between octadecyl L-tyrosine and alum in the antihepatitis B surface Ag antibody response was the absence of IgE-specific antibodies subsequent to immunization of the Ag in octadecyl L-tyrosine. Both the optical isomers of the octadecyl esters of tyrosine were adjuvant active, however, the racemic mixture showed a significantly lowe adjuvant activity. This adjuvant has great potential to be used in humans because it is devoid of side effects as assessed by the lack of acute and chronic toxicity in mice and rats, pyrogenicity in rabbits, formation of granuloma in cats, and adjuvant arthritis in rats.
authors.affiliation: Department of Microbiology, Mount Sinai School of Medicine, New York, NY 10029.
authors.forename: A
authors.initials: A
authors.lastname: Nixon-George
authors.forename: T
authors.initials: T
authors.lastname: Moran
authors.forename: G
authors.initials: G
authors.lastname: Dionne
authors.forename: C L
authors.initials: CL
authors.lastname: Penney
authors.forename: D
authors.initials: D
authors.lastname: Lafleur
authors.forename: C A
authors.initials: CA
authors.lastname: Bona
mesh_terms: D000276:Adjuvants, Immunologic; D000818:Animals; D005260:Female; D006514:Hepatitis B Surface Antigens / Q000008:administration & dosage / Q000276:immunology* / Q000493:pharmacokinetics; D007073:Immunoglobulin E / Q000276:immunology; D007132:Immunoglobulin Isotypes / Q000276:immunology; D007156:Immunologic Memory; D051379:Mice; D008807:Mice, Inbred BALB C; D014443:Tyrosine / Q000031:analogs & derivatives* / Q000276:immunology; D014612:Vaccines / Q000276:immunology*; D014614:Vaccines, Synthetic / Q000276:immunology*
chemical_list: D000276:Adjuvants, Immunologic; D006514:Hepatitis B Surface Antigens; D007132:Immunoglobulin Isotypes; D014612:Vaccines; D014614:Vaccines, Synthetic; D007073:Immunoglobulin E; D014443:Tyrosine; C045245:stearyl tyrosine