Journal
VACCINE
Volume 28, Issue 43, Pages 6997-7008Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.vaccine.2010.08.041
Keywords
Group B streptococcus; Antibody repertoire; Protective antigens
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Group B streptococcus is one of the most important pathogens in neonates, and causes invasive infections in non-pregnant adults with underlying diseases. Applying a genomic approach that relies on human antibodies we identified antigenic GBS proteins, among them most of the previously published protective antigens. In vitro analyses allowed the selection of conserved candidate antigens that were further evaluated in murine lethal sepsis models using several GBS strains. In active and passive immunization models, we identified four protective GBS antigens, FbsA and BibA, as well as two hypothetical proteins, all shown to contribute to virulence based on gene deletion mutants. These protective antigens have the potential to be components of novel vaccines or targets for passive immune prophylaxis against GBS disease. (C) 2010 Elsevier Ltd. All rights reserved.
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