| DOI | Trouver le DOI : https://doi.org/10.1073/pnas.1100782108 |
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| Auteur | Rechercher : Kubler-Kielb, J.; Rechercher : Vinogradov, E.1; Rechercher : Lagergård, T.; Rechercher : Ginzberg, A.; Rechercher : King, J.D.; Rechercher : Preston, A.; Rechercher : Maskell, D.J.; Rechercher : Pozsgay, V.; Rechercher : Keith, J.M.; Rechercher : Robbins, J.B.; Rechercher : Schneerson, R. |
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| Affiliation | - Conseil national de recherches du Canada. Institut des sciences biologiques du CNRC
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| Format | Texte, Article |
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| Sujet | bacterium antibody; immunoglobulin G; immunoglobulin M; lipopolysaccharide; oligosaccharide; pertussis vaccine; trisaccharide; Bordetella bronchiseptica; Bordetella pertussis; enzyme linked immunosorbent assay; immunogenicity; microbial activity; mouse; serology; Antibodies, Bacterial; Bordetella bronchiseptica; Bordetella pertussis; Carbohydrate Sequence; Electrophoresis, Polyacrylamide Gel; Female; Mice; Molecular Sequence Data; Oligosaccharides; Pertussis Vaccine; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; Bordetella bronchiseptica; Bordetella pertussis; Mus; Negibacteria |
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| Résumé | Pertussis is a highly contagious respiratory disease that is especially dangerous for infants and children. Despite mass vaccination, reported pertussis cases have increased in the United States and other parts of the world, probably because of increased awareness, improved diagnostic means, and waning vaccine-induced immunity among adolescents and adults. Licensed vaccines do not kill the organism directly; the addition of a component inducing bactericidal antibodies would improve vaccine efficacy. We investigated Bordetella pertussis and Bordetella bronchiseptica LPS-derived core oligosaccharide (OS) protein conjugates for their immunogenicity in mice. B. pertussis and B. bronchiseptica core OS were bound to aminooxylated BSA via their terminal Kdo residues. The two conjugates induced similar anti-B. pertussis LPS IgG levels in mice. B. bronchiseptica was investigated because it is easier to grow than B. pertussis. Using B. bronchiseptica genetically modified strains deficient in the O-specific polysaccharide, we isolated fractions of core OS with one to five repeats of the terminal trisaccharide, having at the nonreducing end a GlcNAc or GalNAc, and bound them to BSA at different densities. The highest antibody levels in mice were elicited by conjugates containing an average of 8-17 OS chains per protein and with one repeat of the terminal trisaccharide. Conjugate-induced antisera were bactericidal against B. pertussis, and the titers correlated with ELISA-measured antibody levels (r = 0.74). Such conjugates are easy to prepare and standardize; added to a recombinant pertussis toxoid, they may induce antibacterial and antitoxin immunity. |
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| Date de publication | 2011 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21271308 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 707f5160-0302-4221-8757-f166f2c9f271 |
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| Enregistrement créé | 2014-03-24 |
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| Enregistrement modifié | 2020-04-21 |
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