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    • 16. 发明授权
    • Recombinant viruses displaying a nonviral polypeptide on their external surface
    • 在其外表面上显示非病毒多肽的重组病毒
    • US06297004B1
    • 2001-10-02
    • US09032084
    • 1998-02-27
    • Stephen J. RussellRobert E. HawkinsGregory P. Winter
    • Stephen J. RussellRobert E. HawkinsGregory P. Winter
    • C12Q170
    • C40B40/02A61K48/00C12N15/1037C12N15/86C12N15/87C12N2740/13043C12N2740/13045C12N2810/859
    • We have made retrovirus particles displaying a functional antibody fragment. We fused the gene encoding an antibody fragment directed against a hapten with that encoding the viral envelope protein (Pr80env) of the ecotropic Moloney murine leukemia virus. The fusion gene was co-expressed in ecotropic retroviral packaging cells with a retroviral plasmid carrying the neomycin phosphotransferase gene (neo), and retroviral particles with specific hapten biding activities were recovered. Furthermore the hapten-binding particles were able to transfer the neo gene and the antibody-envelope fusion gene to mouse fibroblasts. In principle, the display of antibody fragments on the surface of recombinant retroviral particles could be used to target virus to cells for gene delivery, or to retain the virus in target tissues, or for the construction of libraries of viral display packages.
    • 我们已经制备出显示功能性抗体片段的逆转录病毒颗粒。 我们将编码针对半抗原的抗体片段的基因与编码亲和性莫洛尼鼠白血病病毒的病毒包膜蛋白(Pr80env)的基因融合。 融合基因在携带新霉素磷酸转移酶基因(neo)的逆转录病毒质粒的亲和逆转录病毒包装细胞中共表达,并回收具有特异性半抗原活性的逆转录病毒颗粒。 此外,半抗原结合颗粒能够将neo基因和抗体 - 包膜融合基因转移至小鼠成纤维细胞。 原则上,重组逆转录病毒颗粒表面上的抗体片段的显示可以用于将病毒靶向到细胞进行基因递送,或将病毒保留在靶组织中,或用于构建病毒显示包的文库。