Immune peptides for use in the prevention and / or treatment of infectious diseases, autoimmune diseases, immune responses to allofactors, allergic diseases, tumors, graft rejections and immune responses to viral vectors
An isolated immunogenic peptide derived from an antigenic protein comprising: (1) an epitope of a natural killer T cell (NKT cell) comprising a [FWHY] -xx [ILMV] -xx [FWHY] motif; and (2) a [CST] -xx-C or C-xx [CST] thioreductase motif located either immediately adjacent to the NKT cell epitope or separated from the NKT cell epitope by a linker of at most 7 amino acids.