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    • 7. 发明申请
    • ANTIGENIC MODULATION OF VIRAL PARTICULES
    • 抗病毒颗粒的抗原调节
    • WO9900145A9
    • 1999-04-15
    • PCT/US9813198
    • 1998-06-25
    • ALBANY MEDICAL COLLEGESCOTT MARK DEATON JOHN W
    • SCOTT MARK DEATON JOHN W
    • A61K47/48C12N15/86C12N15/88
    • C12N15/88A61K47/6901C12N15/86C12N2710/10343
    • The present invention is directed to a non-immunogenic cellular composition comprising: a cell, particularly a viral particles or virus, having a cell surface and antigenic determinants on the cell surface; an optional linker molecule covalently attached to the cell surface; and a non-immunogenic compounds (e.g., polyethylene glycol or a derivative thereof) covalently attached to the linker molecule or directly to the cell. In one embodiment, the linker molecule is covalently attached directly to the antigenic determinant on the cell surface. In an alternate embodiment, the linker molecule may be covalently attached to a non-antigenic site on the cell surface, but will camouflage the antigenic determinant on the cell surface. Various uses of the resulting non-immunogenic viral cell are also provided, including a method of decreasing phagocytosis of a viral cell, a method of decreasing an adverse reaction to a transfusion, a method of decreasing rejection of a transplanted viral cell, tissue or organ, and a method of decreasing antibody-induced aggregation of cells.
    • 本发明涉及非免疫原性细胞组合物,其包含:细胞,特别是病毒颗粒或病毒,其在细胞表面上具有细胞表面和抗原决定簇; 任选的连接分子共价连接到细胞表面; 和共价连接至接头分子或直接连接至细胞的非免疫原性化合物(例如聚乙二醇或其衍生物)。 在一个实施方案中,接头分子直接共价连接至细胞表面上的抗原决定簇。 在一个替代实施方案中,接头分子可以共价连接到细胞表面上的非抗原性位点,但会伪装细胞表面上的抗原决定簇。 还提供了所得非免疫原性病毒细胞的各种用途,包括减少病毒细胞的吞噬作用的方法,减少对输血的不良反应的方法,减少移植的病毒细胞,组织或器官排斥的方法 以及减少抗体诱导的细胞聚集的方法。