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    • 3. 发明授权
    • Tresyl-monomethoxypolyethylene glycol-modified viruses having viral infectivity
    • 具有病毒感染性的甲磺酸单甲氧基聚乙二醇修饰病毒
    • US06569426B2
    • 2003-05-27
    • US09409803
    • 1999-09-30
    • Alan E. SmithCatherine R. O'RiordanGillian E. FrancisVincent ParkesChristina Delgado
    • Alan E. SmithCatherine R. O'RiordanGillian E. FrancisVincent ParkesChristina Delgado
    • A01N6300
    • C12N15/86A61K47/6901A61K48/00C12N2710/10343C12N2810/10Y10S530/81
    • Viruses are modified by coupling a polymer such as polyethylene glycol to obtain polymer-modified viruses that can exhibit reduced antigenicity while retaining infectivity, and which may exhibit increased circulation time in vivo. The polymer may be directly covalently attached or indirectly covalently attached via an intermediate coupling moiety to the virus. The polymer may also be indirectly noncovalently attached to the virus via a ligand such as an antibody having specificity for a viral surface component. To prepare the polymer-modified virus, the polymer is activated and coupled to the virus. A preferred activated polymer is tresyl-monomethoxypolyethylene glycol having an average molecular weight of about 5000 daltons. The polymer-modified viruses have utility for therapeutic and diagnostic in vivo applications, and may be used to introduce a transgene into a target cell by infection, or be administered to a subject having a tumor where the polymer-modified virus localizes to the tumor.
    • 通过将聚合物例如聚乙二醇偶联来改进病毒以获得聚合物修饰的病毒,其可以在保留感染性的同时表现出降低的抗原性,并且其可以在体内表现出增加的循环时间。 聚合物可以直接共价连接或间接地通过中间偶联部分共价连接到病毒上。 聚合物还可以通过配体例如对病毒表面组分具有特异性的抗体非共价连接到病毒。 为了制备聚合物改性的病毒,聚合物被激活并与病毒偶联。 优选的活化聚合物是平均分子量为约5000道尔顿的甲磺酰单甲氧基聚乙二醇。 聚合物修饰的病毒可用于治疗和诊断体内应用,并且可用于通过感染将转基因导入靶细胞,或被施用于具有聚合物修饰的病毒定位于肿瘤的肿瘤的受试者。