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    • 5. 发明申请
    • Mutant Paramyxovirus and Method for Production Thereof
    • 突变型副粘病毒及其生产方法
    • US20090269850A1
    • 2009-10-29
    • US12085355
    • 2006-11-24
    • Yasufumi KanedaKatsuto TamaiKotaro SagaMasako Kawachi
    • Yasufumi KanedaKatsuto TamaiKotaro SagaMasako Kawachi
    • C12N15/86C12N7/01C12N5/10C07K14/00C07K16/00C07H21/02C07H21/04
    • C12N7/00C07K14/005C07K2319/30C07K2319/33C12N15/1131C12N15/86C12N2310/14C12N2760/18821C12N2760/18822C12N2760/18843C12N2760/18845C12N2810/859
    • The present invention provides a modified paramyxovirus containing a reduced amount of receptor-binding protein compared with the wild type; a method of preparing a modified paramyxovirus, comprising the following steps: (1) a step for introducing a nucleic acid that suppresses the expression of a receptor-binding protein of a paramyxovirus into an animal cell, (2) a step for infecting the paramyxovirus to the cell, and (3) a step for isolating paramyxovirus particles replicated in the cell; and a modified paramyxovirus prepared by the method of preparation mentioned above.The present invention also provides a chimera protein wherein a fusion protein of a virus has been joined or bound to a peptide that binds specifically to a cell surface marker; a nucleic acid that encodes the chimera protein; an animal cell capable of expressing the chimera protein on the cell surface thereof; a modified paramyxovirus expressing the chimera protein on the virus particle surface thereof; and a method of preparing a tissue targeting paramyxovirus, comprising: (1) a step for supplying a nucleic acid that encodes a chimera protein wherein a fusion protein of a virus has been joined or bound to a peptide that binds specifically to a cell surface marker of the target cells, (2) a step for introducing the nucleic acid supplied in (1) into an animal cell in an expressible state, and expressing the same, (3) a step for infecting a paramyxovirus to the cell, and (4) a step for isolating paramyxovirus particles replicated in the cell.
    • 本发明提供了与野生型相比含有减少量的受体结合蛋白的修饰的副粘病毒; 一种制备修饰的副粘病毒的方法,包括以下步骤:(1)将抑制副粘病毒的受体结合蛋白的表达的核酸引入动物细胞的步骤,(2)感染副粘病毒的步骤 (3)用于分离复制在细胞中的副粘病毒颗粒的步骤; 和通过上述制备方法制备的修饰的副粘病毒。 本发明还提供一种嵌合体蛋白,其中病毒的融合蛋白已经与特异性结合于细胞表面标记的肽结合或结合; 编码嵌合蛋白的核酸; 能够在其细胞表面上表达嵌合体蛋白质的动物细胞; 在病毒颗粒表面上表达嵌合体蛋白质的修饰的副粘病毒; 以及制备组织靶向副粘病毒的方法,包括:(1)提供编码嵌合体蛋白的核酸的步骤,其中病毒的融合蛋白已经结合或与特异性结合于细胞表面标记的肽结合 的靶细胞,(2)将(1)中提供的核酸以可表达状态引入动物细胞中并表达其的步骤,(3)感染细胞的副粘病毒的步骤,(4 )分离在细胞中复制的副粘病毒颗粒的步骤。