Beta-glucan-CRM197 conjugates as candidates antifungal vaccines
2010; Elsevier BV; Volume: 28; Issue: 14 Linguagem: Inglês
10.1016/j.vaccine.2010.01.012
ISSN1873-2518
AutoresCarla Bromuro, Maria Rosaria Romano, Paola Chiani, Francesco Berti, Marta Tontini, Daniela Proietti, Elena Mori, Antonella Torosantucci, Paolo Costantino, Rino Rappuoli, Antonio Cassone,
Tópico(s)Plant-Microbe Interactions and Immunity
ResumoA laminarin-diphtheria toxoid (CRM197) conjugate vaccine conferred protection against fungal infections in mice. We have now generated novel beta-glucan-CRM197 vaccines, with either natural (Curd-CRM197) or synthetic linear (15mer-CRM197), or beta-(1,6)-branched (17mer-CRM197) beta-(1,3)-oligosaccharides, formulated with the human-acceptable adjuvant MF59. Curd-CRM197 and 15mer-CRM197 conjugates, which induced high titers of anti-beta-(1,3)-glucan IgG, but no antibodies against beta-(1,6)-glucan, conferred protection to mice lethally challenged with C. albicans. In contrast, the 17mer-CRM197 conjugate, which induced anti-beta-(1,6)-glucan antibodies in addition to the anti-beta-(1,3)-glucan IgG, was non-protective. These data provide some insights on beta-glucan epitope(s) mediating antifungal protection and open the way to develop a synthetic oligosaccharide vaccine against fungal diseases.
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