T-helper epitope peptide improves immunological effects of the B cell epitopes of human heparanase protein / 中华微生物学和免疫学杂志

ABSTRACT

Objective To explore available immune strategy to improve immunological effects of the B cell epitopes of human heparanase protein.Methods Based on predicted potential B cell epitopes of human heparanase protein,three candidates of multiple antigenic peptides(MAP)with 8-branches were synthesized and identified by conjugation to antibody against full human heparanase protein.C57BL/6 mice were immunized with the 8-branch MAPs mixed with or without the universal human T-helper IL-1β peptide.The antibody titers of immune serum was assayed by ELISA.Results Most potential epitopes of human heparanase protein were predicted as No.1-15(MAP1),279-293(MAP2)and 175-189(MAP3)in large subunit of human heparanase protein.All three synthesized MAPs mixed with the T-helper epitope induced higher titers of antibodies than them without the T-helper epitope.Conclusion The three B cell epitopes of human heparanase protein could he its B cell preponderant epitopes.The 8-branch MAPs mixed TH cell epitope may be an available and optimizing immune strategy.