Abstract
Present study reports the development of divalent vaccine with enhanced protection, permeation and presentation following peroral immunization. Layersomes were prepared by layer-by-layer tuning of polyelectrolytes on liposomes template. The developed system was evaluated for in vitro stability of antigen and layersomes, cell-based assays and immunization experiments in mice. Layersomes exhibited enhanced stability in simulated biological fluids, still preserving the integrity, biological activity and conformational stability of toxoids. Layersomes also exhibited complete and protective (>0.1 IU/ml) immunostimulatory response include serum IgG titer, mucosal sIgA titer and cytokines (IL-2 and IFN-γ) levels following peroral administration. The positive findings of proposed strategy are expected to contribute significantly in the field of stable liposomes technology and peroral immunization.
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