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    • 6. 发明授权
    • Gene expression in mammalian cells
    • 哺乳动物细胞中的基因表达
    • US06207146B1
    • 2001-03-27
    • US08913778
    • 1997-10-24
    • Yin Hwee TanWanjin Hong
    • Yin Hwee TanWanjin Hong
    • A61K3821
    • C07K14/565A61K38/00C07K14/505C12N15/85C12N2800/108C12N2830/002C12N2830/15C12N2830/60C12N2830/85
    • Proteins such as human &bgr;-interferon or human erythropoietin are prepared by culturing mammalian cells which harbour a nucleic acid sequence comprising: (i) a coding sequence which encodes the desired protein and which is operably linked to a promoter capable of directing expression of the coding sequence in a mammalian cell in the presence of a heavy metal ion; and (ii) a first selectable marker sequence comprises a metallothionein gene and which is operably linked to a promoter capable of directing expression of the metallothionein gene in a mammalian cell in the presence of a heavy metal ion; and optionally (iii) a second selectable marker sequence which comprises a neo gene and which is operably linked to a promoter capable of directing expression of the neo gene in a mammalian cell.
    • 蛋白质如人β-干扰素或人促红细胞生成素通过培养携带核酸序列的哺乳动物细胞来制备,所述核酸序列包含:(i)编码所需蛋白质的编码序列,其可操作地连接于能够引导编码 在重金属离子存在下的哺乳动物细胞中的序列; 和(ii)第一选择性标记序列包含金属硫蛋白基因,并且在重金属离子存在下,其可操作地连接于能够引导金属硫蛋白基因在哺乳动物细胞中表达的启动子; 和任选地(iii)第二选择性标记序列,其包含neo基因并且可操作地连接到能够引导neo基因在哺乳动物细胞中的表达的启动子。