Short Vi-polysaccharide abrogates T-independent immune response and hyporesponsiveness elicited by long Vi-CRM197conjugate vaccine

Micoli F., Bjarnarson SP., Arcuri M., Aradottir Pind AA., Magnusdottir GJ., Necchi F., Di Benedetto R., Carducci M., Schiavo F., Giannelli C., Pisoni I., Martin LB., Del Giudice G., MacLennan CA., Rappuoli R., Jonsdottir I., Saul A.

SignificanceOur results suggest a rational way of designing and developing an improved typhoid conjugate vaccine and, by extension, to conjugate vaccines in general: first, modify a T-independent polysaccharide so that it no longer induces a T-independent response, then conjugate the polysaccharide to a suitable carrier protein restoring immunogenicity, thus creating a pure T-dependent antigen that induces a strongly boostable and long-lived response at an early age.

DOI

10.1073/pnas.2005857117

Type

Journal article

Publisher

Proceedings of the National Academy of Sciences

Publication Date

2020-09-29T00:00:00+00:00

Volume

117

Pages

24443 - 24449

Total pages

6

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