The lipopolysaccharide (LPS) of Vibrio cholerae (V. cholerae) plays an important role in cholera disease and the induction of primary protection. In this study, we evaluate mice humoral immune response in intranasal and intraperitoneal administrated V. cholerae LPS. The results showed that the intranasal administration of LPS-chitosan nanoparticle induced the high level of antibodies compared to intraperitoneal injection of antigen without chitosan (P < .001). These results indicated that intranasal and intraperitoneal administration of LPS has been able to induce the high level of antibodies both in the sera and lavage fluid and confirmed our strategy for using intranasal administration of antigen.
Background: Chitosan, a liner polysaccharide, is a biocompatible and safe material for the delivery of therapeutic proteins and antigens, particularly via mucosal systems.
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