title: Immune response to a synthetic peptide corresponding to an epitope of a parasitophorous vacuole membrane antigen from Plasmodium falciparum.
abstract: The parasitophorous vacuole membrane antigen QF 116 from Plasmodium falciparum contains a defined epitope, DNNLVSGP, proximal to the carboxyl-terminus which binds to the inhibitory monoclonal antibody 8E7/55. A synthetic peptide containing this epitope was constructed and coupled to diphtheria toxoid as carrier. Mice and rabbits were inoculated with this conjugate using CFA, SAF-1, or aluminum phosphate as adjuvants. The peptide conjugate was highly immunogenic in both animal species, giving rise to polyclonal antibodies with a similar epitope specificity as the original mAb. Antibody titers were dependent on the route of immunization. Rabbit antibodies produced in sufficient quantity for biologic assays inhibited parasite growth in vitro. This synthetic peptide thus shows promise as an immunogen for use in synthetic vaccine design.
authors: Queensland Institute of Medical Research, Herston, Brisbane, Australia.
authors: U
authors: U
authors: Kara
authors: D
authors: D
authors: Pye
authors: R
authors: R
authors: Lord
authors: C
authors: C
authors: Pam
authors: H
authors: H
authors: Gould
authors: M
authors: M
authors: Geysen
authors: G
authors: G
authors: Jones
authors: D
authors: D
authors: Stenzel
authors: C
authors: C
authors: Kidson
authors: A
authors: A
authors: Saul
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000913:Antibodies, Protozoan / Q000096:biosynthesis* / Q000502:physiology; D000918:Antibody Specificity; D000953:Antigens, Protozoan / Q000008:administration & dosage / Q000276:immunology*; D000954:Antigens, Surface / Q000008:administration & dosage / Q000276:immunology*; D004306:Dose-Response Relationship, Immunologic; D000939:Epitopes / Q000008:administration & dosage / Q000276:immunology; D006131:Growth Inhibitors / Q000502:physiology; D015151:Immunoblotting; D051379:Mice; D008807:Mice, Inbred BALB C; D008808:Mice, Inbred CBA; D008969:Molecular Sequence Data; D010446:Peptide Fragments / Q000008:administration & dosage / Q000276:immunology*; D010963:Plasmodium falciparum / Q000276:immunology*; D011817:Rabbits; D014617:Vacuoles / Q000276:immunology*
chemical_list: D000913:Antibodies, Protozoan; D000953:Antigens, Protozoan; D000954:Antigens, Surface; D000939:Epitopes; D006131:Growth Inhibitors; D010446:Peptide Fragments