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    • 6. 发明申请
    • METHODS AND MEANS FOR TARGETED GENE DELIVERY
    • 目的基因交付的方法和手段
    • WO1997005266A1
    • 1997-02-13
    • PCT/NL1996000302
    • 1996-07-25
    • INTROGENE B.V.VALERIO, DomenicoVAN BEUSECHEM, Victor, Willem
    • INTROGENE B.V.
    • C12N15/87
    • C07K14/005A61K47/6898A61K47/6901A61K48/00B82Y5/00C07K14/70535C07K2319/32C12N7/00C12N15/86C12N15/87C12N2710/00088C12N2740/13043C12N2740/13045C12N2740/13052C12N2740/15022C12N2810/855C12N2810/859
    • The present invention provides a method of producing viral gene delivery vehicles which can be transferred to preselected cell types by using targeting conjugates. The gene delivery vehicules comprise: 1) the gene of interest (to be delivered); 2) a viral capsid or envelope carrying a member of a specific binding pair, the counterpart of which is not directly associated with the surface of the target cell. These vehicles can be made unable to bind to their natural receptor on the cell. The targeting conjugates are composed of the counterpart member of the specific binding pair linked to a targeting moiety which is a cell-type specific ligand (or fragments thereof). The number of the specific binding pair present on the viral vehicles can be for example an immunoglobulin binding moiety (e.g. capable of binding to a Fc fragment, protein A, protein G, FcR or an anti-Ig antibody), or biotin, avidin or streptavidin. The outer membrane or capsid of the virus may contain a substance which mediates entrance of the gene delivery vehicle into the target cell. Due to the specificity of the ligand, the high affinity of the binding pair and to the inability of the gene delivery vehicle to be targeted when used alone, the universality of the method for gene delivery, together with its high cell type selectively can easily be achievied by the use of various adequate targeting conjugates.
    • 本发明提供了可以通过使用靶向缀合物转移到预选细胞类型的病毒基因递送载体的生产方法。 基因输送车辆包括:1)感兴趣的基因(待交付); 2)携带特异性结合对的成员的病毒衣壳或信封,其对应物不与靶细胞的表面直接相关。 这些载体可能不能与细胞上的天然受体结合。 靶向缀合物由与作为细胞型特异性配体(或其片段)的靶向部分连接的特异性结合对的对应成员组成。 存在于病毒载体上的特异性结合对的数目可以是例如免疫球蛋白结合部分(例如能够结合Fc片段,蛋白A,蛋白G,FcR或抗-Ig抗体)或生物素,抗生物素蛋白或 链亲和素。 病毒的外膜或衣壳可以含有介导基因递送载体进入靶细胞的入口的物质。 由于配体的特异性,当单独使用时,结合对的高亲和力和基因递送载体的靶向性不足,基因递送方法的普及性及其高细胞型选择性可容易地 通过使用各种适当的目标缀合物实现。