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    • 6. 发明授权
    • DNA vaccines encoding antigen linked to a domain that binds CD40
    • 编码与结合CD40的结构域连接的抗原的DNA疫苗
    • US07118751B1
    • 2006-10-10
    • US09687864
    • 2000-10-13
    • Jeffrey A LedbetterMartha Hayden-Ledbetter
    • Jeffrey A LedbetterMartha Hayden-Ledbetter
    • A61K39/00
    • C07K14/005A61K39/00A61K39/12A61K39/21A61K2039/53A61K2039/57A61K2039/6031C07K2319/00C12N2740/16122C12N2740/16134
    • Vaccines that target one or more antigens to a cell surface receptor improve the antigen-specific humoral and cellular immune response. Antigen(s) linked to a domain that binds to a cell surface receptor are internalized, carrying antigen(s) into an intracellular compartment where the antigen(s) are digested into peptides and loaded onto MHC molecules. T cells specific for the peptide antigens are activated, leading to an enhanced immune response. The vaccine may comprise antigen(s) linked to a domain that binds at least one receptor or a DNA plasmid encoding antigen(s) linked to a domain that binds at least one receptor. A preferred embodiment of the invention targets HIV-1 env antigen to the CD40 receptor, resulting in delivery of antigen to CD40 positive cells, and selective activation of the CD40 receptor on cells presenting HIV-1 env antigens to T cells.
    • 将一种或多种抗原靶向细胞表面受体的疫苗可改善抗原特异性体液和细胞免疫应答。 与结合细胞表面受体的结构域连接的抗原被内化,将抗原携带到细胞内隔室中,其中抗原被消化成肽并加载到MHC分子上。 对肽抗原特异性的T细胞被激活,导致增强的免疫应答。 疫苗可以包含连接到结合至少一种受体的结构域的抗原或编码与结合至少一种受体的结构域连接的抗原的DNA质粒。 本发明的优选实施方案将HIV-1 env抗原靶向CD40受体,导致抗原递送至CD40阳性细胞,以及将呈递HIV-1 env抗原的细胞上的CD40受体选择性激活至T细胞。