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Abstract

Disclosed herein are the nucleotide sequences, deduced amino acid sequences as well as methods and compositions necessary to elicit immune responses against chronic Hepatitis B infections in animals and humans. Immune response is enhanced by fusing relevant viral antigens with xenotypic immunoglobulin heavy chain region through a peptide linker and producing the fusion proteins in Baculovirus expression system to incorporate high mannose glycosylation. By virtue of the antibody component, the fusion proteins bind to Fc receptors on the surface of antigen presenting cells, are taken up, processed and derived peptides are presented on MHC Class I, which elicit a CTL (Th1) response. In a similar fashion, due to cross priming and presentation on MHC Class II, will elicit a humoral (Th2) response. In addition, disclosed are the methods of cloning, expression and production of the fusion proteins.

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First Claim