INSECT-DERIVED PROMOTERS FOR FOREIGN PROTEINS EXPRESSION IN INSECT CELLS
    1.
    发明申请
    INSECT-DERIVED PROMOTERS FOR FOREIGN PROTEINS EXPRESSION IN INSECT CELLS 审中-公开
    用于外源蛋白表达的INSECT衍生的促进剂

    公开(公告)号:US20110203010A1

    公开(公告)日:2011-08-18

    申请号:US13061395

    申请日:2008-09-02

    摘要: Insect-derived promoters for foreign proteins expression in insect cells. Regulatory polynucleotide sequences which drive the expression of major insect proteins (hexamerins) at specific evolution stages of larva have been isolated from insects (Trichoplusia ni) in the present invention. Said regulatory polynucleotide sequences promote stronger foreign gene expression in the baculovirus system than the conventional polyhedrin promoter. Additionally, the combination of the new larva-derived promoters of the invention with the pL promoter increased baculovirus expression levels up to 61%-375% (depending on the time of infection) with respect to conventional baculoviruses used in the biotechnology industry. Promoter pB2 also drives gene expression at earlier times than polyhedrin promoter, being this feature a great advantage for correct protein folding and posttranslational modification.

    摘要翻译: 昆虫细胞中外源蛋白表达的昆虫衍生启动子。 在本发明的昆虫(Trichoplusia ni)中已经分离了在幼虫的特定进化阶段驱动主要昆虫蛋​​白质(六聚体)表达的调节性多核苷酸序列。 所述调节多核苷酸序列在杆状病毒系统中促进比常规多角体蛋白启动子更强的外源基因表达。 此外,本发明的新的幼虫衍生的启动子与pL启动子的组合相对于在生物技术工业中使用的常规杆状病毒增加杆状病毒表达水平高达61%-375%(取决于感染时间)。 启动子pB2也比早期多基因启动子驱动基因表达,这对于正确的蛋白质折叠和翻译后修饰具有重要的优势。