Immunization with a Pseudomonas aeruginosa 1244 pilin provides O-antigen-specific protection.
The O antigen is both a major structural outer membrane component and the dominant epitope of most gram-negative bacteria. Pseudomonas aeruginosa 1244 produces a type IV pilus and covalently links an O-antigen repeating unit to each pilin monomer. Here we show that immunization of mice with pure pilin from strain 1244 by use of either the mouse respiratory model or the thermal injury model resulted in protection from challenge with a pilus-null O-antigen-producing 1244 mutant. These results provide evidence that the pilin glycan stimulates a protective response that targets the O antigen, suggesting that this system could be used as the basis for the development of a variety of bioconjugate vaccines protective against gram-negative bacteria.
Horzempa
Joseph
J
Department of Biological Sciences, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA 15282, USA.
Held
Thomas K
TK
Cross
Alan S
AS
Furst
Dana
D
Qutyan
Mohammed
M
Neely
Alice N
AN
Castric
Peter
P
D000818:Animals; D000918:Antibody Specificity; D004797:Enzyme-Linked Immunosorbent Assay; D036781:Fimbriae Proteins / Q000008:administration & dosage / Q000276:immunology*; D010861:Fimbriae, Bacterial / Q000276:immunology; D006001:Glycoconjugates / Q000276:immunology / Q000494:pharmacology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D008813:Mice, Inbred ICR; D019081:O Antigens / Q000276:immunology*; D011134:Polysaccharides / Q000276:immunology / Q000494:pharmacology; D011552:Pseudomonas Infections / Q000276:immunology* / Q000517:prevention & control; D054406:Pseudomonas Vaccines / Q000276:immunology* / Q000494:pharmacology; D011550:Pseudomonas aeruginosa / Q000276:immunology*; D011817:Rabbits
D006001:Glycoconjugates; D019081:O Antigens; D011134:Polysaccharides; D054406:Pseudomonas Vaccines; D036781:Fimbriae Proteins