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    • 25. 发明授权
    • Cell transformation vector comprising an HIV-2 packaging site nucleic acid and an HIV-1 GAG protein
    • 包含HIV-2包装位点核酸和HIV-1GAG蛋白的细胞转化载体
    • US06200811B1
    • 2001-03-13
    • US08822516
    • 1997-03-24
    • Pierre CorbeauGunter KrausFlossie Wong-Staal
    • Pierre CorbeauGunter KrausFlossie Wong-Staal
    • C12N1586
    • C12N7/00A61K38/00A61K48/00C07K14/005C12N15/86C12N2740/16052C12N2740/16122
    • By transducing cells with an HIV-1-MN molecular clone deleted in the major packaging sequence, a stable HIV-1 packaging cell line, &psgr;422 was produced. &psgr;422 cells form syncytia with CD4 positive cells, correctly express HIV-1 structural proteins, and produce large amount of mature particles with normal RT activity. These particles are not infectious. When stably transfected with an HIV-based retroviral vector, the &psgr;422 cell line produces hybrid virions capable of transducing CD4 positive cells with high efficiency (e.g., 105 cells/ml). The availability of this stable, noninfectious HIV-1 packaging cell line capable of generating high titer HIV vectors enables the use of HIV-1 based nucleic acids delivery systems, for example, in gene therapy. An HIV-2 based vector is packaged by the packaging cell lines, demonstrating that HIV-2 cell transformation vectors are packaged by the packaging cell line. HIV based vectors packaged by the high efficiency cell lines are shown to have anti-HIV activity per se.
    • 通过在主要包装序列中缺失的HIV-1-MN分子克隆转导细胞,产生稳定的HIV-1包装细胞系psi422。 psi422细胞与CD4阳性细胞形成合胞体,正确表达HIV-1结构蛋白,并产生大量具有正常RT活性的成熟颗粒。 这些颗粒不感染。 当用HIV-型逆转录病毒载体稳定转染时,psi422细胞系产生能够以高效率(例如,105个细胞/ ml)转导CD4阳性细胞的杂合病毒体。 能够产生高滴度的HIV载体的这种稳定的,非感染性的HIV-1包装细胞系的可用性使得能够使用基于HIV-1的核酸递送系统,例如在基因治疗中。 通过包装细胞系包装基于HIV-2的载体,证明HIV-2细胞转化载体被包装细胞系包装。 由高效细胞系包装的基于HIV的载体显示出具有抗HIV活性本身。