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N19 Polyepitope As a Carrier for Enhanced Immunogenicity and Protective Efficacy of Meningococcal Conjugate Vaccines

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Journal Infect Immun
Date 2004 Jul 24
PMID 15271954
Citations 13
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Abstract

N19, a string of human universal CD4 T-cell epitopes from various pathogen-derived antigens, was shown to exert a stronger carrier effect than CRM197 for the induction of anti-group C Neisseria meningitidis capsular polysaccharide (MenC), after immunization of mice with various dosages of N19-MenC or CRM-MenC conjugate vaccines. After two immunizations, the N19-based construct induced anti-MenC antibody and protective bactericidal antibody titers higher than those induced by three doses of the CRM-MenC conjugate and required lower amounts of conjugate. N19-based conjugates are superior to CRM-based conjugates to induce protective immune responses to MenC conjugates.

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