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    • 7. 发明申请
    • PRODUCTION AND RECOVERY OF RECOMBINANT NEUROTROPHINS
    • 重组神经营养因子的生产和恢复
    • WO1992022665A1
    • 1992-12-23
    • PCT/US1992005006
    • 1992-06-11
    • REGENERON PHARMACEUTICALS, INC.
    • REGENERON PHARMACEUTICALS, INC.PANAYOTATOS, NikosFANDL, James, P.
    • C12P21/06
    • C07K14/245C07K14/475C07K2319/02C12N15/70
    • We disclose a process for producing and recovering a recombinant neurotrophin comprising the steps of: (1) culturing a non-animal host cell transformed with a recombinant DNA molecule comprising an expression control sequence operatively linked to a DNA sequence encoding a neurotrophin; (2) solubilizing the neurotrophin in a solution comprising a protease inhibitor in an amount effective to inhibit degradation of the neurotrophin by proteases and a strong denaturing agent, said solution being essentially free of reducing agents; (3) exchanging the strong denaturing agent for a weak denaturing agent; (4) adjusting the solution to comprise a basic amino acid at a concentration effective to maintain the solubility of the neurotrophin in a nondenaturing environment; (5) removing the weak denaturing agent; and (6) purifying the neurotrophin. In a specific embodiment, also disclosed is the bacterial production of recombinant neurotrophin-4.
    • 我们公开了生产和回收重组神经营养蛋白的方法,包括以下步骤:(1)培养用包含与编码神经营养因子的DNA序列有效连接的表达控制序列的重组DNA分子转化的非动物宿主细胞; (2)将神经营养因子溶解在含有蛋白酶抑制剂的溶液中,所述溶液有效抑制蛋白酶和强变性剂对神经营养因子的降解,所述溶液基本上不含还原剂; (3)交换弱变性剂的强变性剂; (4)调节溶液以包含有效维持神经营养蛋白在非变性环境中的溶解度的碱性氨基酸; (5)去除弱变性剂; 和(6)纯化神经营养蛋白。 在一个具体实施方案中,还公开了重组神经营养因子-4的细菌生产。