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    • 1. 发明申请
    • MAMMALIAN CELL EXPRESSION VECTORS AND UTILIZATION
    • MAMMALIAN细胞表达载体和利用
    • WO2010006415A1
    • 2010-01-21
    • PCT/CA2009/000908
    • 2009-06-30
    • ATGCELL INC.LI, QiangCHEN, Xing-Zhen
    • LI, QiangCHEN, Xing-Zhen
    • C12N15/85C12N15/65C12Q1/68
    • C12N15/85C12N2830/00C12N2840/203
    • An improved mammalian expression vector system which allows: (1) highly expressing exogenous proteins in host mammalian cells; (2) rapidly and efficiently screening recombinant stable cell lines expressing the gene of interest; (3) maintain sustainable expression and prevent gene silencing; and (4) effectively secreting proteins into media in some of cases. The entire expression vector system includes optimized promoters and core promoters, the use of special internal ribosome entry sites, integration of the bacterial backbone into the mammalian expression unit, multiple choices of selection markers, artificial matrix attachment region elements, effective secreting lead sequences and their 5' and 3' UTRs, and proper combinations of these expression elements.
    • 改进的哺乳动物表达载体系统,其允许:(1)在宿主哺乳动物细胞中高度表达外源蛋白; (2)快速有效地筛选表达目的基因的重组稳定细胞系; (3)保持可持续的表达,防止基因沉默; 和(4)在某些情况下,有效地将蛋白质分解成培养基。 整个表达载体系统包括优化的启动子和核心启动子,使用特殊的内部核糖体进入位点,细菌骨架与哺乳动物表达单元的整合,选择标记的多种选择,人造基质附着区域元件,有效分泌引导序列及其 5'和3'UTR,以及这些表达元件的适当组合。