title: Outer membrane proteins of Pseudomonas aeruginosa as vaccine candidates.
abstract: We tested the ability of recombinant outer membrane proteins of Pseudomonas aeruginosa to serve as a protective vaccine against this gram negative pathogen under two main pathophysiological events leading to P. aeruginosa sepsis. i) systemic infection during immunosuppression, and ii) bacterial translocation. A hybrid vaccine was cloned combining protective epitopes of outer membrane protein F (OprF) and outer membrane protein I (OprI). This vaccine proved to be highly protective against an intraperitoneal challenge with P. aeruginosa in immunosuppressed mice. Oral immunization of mice, with recombinant Salmonella dublin expressing OprI induced s-IgA antibodies in the gut mucosa against OprI and provided protection against translocation of P. aeruginosa in an immunosuppressed mouse model. To test whether OprI is safe for use in humans, recombinant OprI was purified and used for immunization of volunteers. Vaccination was well tolerated and no major side effects were observed. The induction of serum antibodies against OprI was found to be dose-dependent and was observed in total in 65% of the volunteers.
authors.affiliation: Chirurgische Universitäs-Klinik Freiburg, Germany.
authors.forename: B U
authors.initials: BU
authors.lastname: von Specht
authors.forename: H
authors.initials: H
authors.lastname: Domdey
authors.forename: F
authors.initials: F
authors.lastname: Schödel
authors.forename: B
authors.initials: B
authors.lastname: Blum
authors.forename: C
authors.initials: C
authors.lastname: Lücking
authors.forename: B
authors.initials: B
authors.lastname: Knapp
authors.forename: G
authors.initials: G
authors.lastname: Muth
authors.forename: K D
authors.initials: KD
authors.lastname: Hungerer
authors.forename: M
authors.initials: M
authors.lastname: Bröker
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D001426:Bacterial Proteins / Q000096:biosynthesis / Q000276:immunology* / Q000633:toxicity; D001428:Bacterial Vaccines / Q000096:biosynthesis / Q000276:immunology* / Q000633:toxicity; D001483:Base Sequence; D017931:DNA Primers; D015195:Drug Design; D004797:Enzyme-Linked Immunosorbent Assay; D000939:Epitopes / Q000276:immunology; D005260:Female; D006801:Humans; D008074:Lipoproteins / Q000096:biosynthesis / Q000276:immunology* / Q000633:toxicity; D051379:Mice; D008807:Mice, Inbred BALB C / Q000276:immunology; D008969:Molecular Sequence Data; D010957:Plasmids; D016133:Polymerase Chain Reaction; D018272:Porins / Q000096:biosynthesis / Q000276:immunology* / Q000633:toxicity; D011552:Pseudomonas Infections / Q000276:immunology* / Q000517:prevention & control; D011550:Pseudomonas aeruginosa / Q000276:immunology*; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000276:immunology / Q000633:toxicity; D012475:Salmonella; D014614:Vaccines, Synthetic / Q000276:immunology / Q000633:toxicity
chemical_list: D000911:Antibodies, Monoclonal; D001426:Bacterial Proteins; D001428:Bacterial Vaccines; D017931:DNA Primers; D000939:Epitopes; D008074:Lipoproteins; D018272:Porins; D011994:Recombinant Proteins; D014614:Vaccines, Synthetic; C060507:outer membrane lipoprotein I, Bacteria