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    • 10. 发明授权
    • Process for producing human thrombin by gene modification technique
    • 通过基因修饰技术生产人凝血酶的方法
    • US07635577B2
    • 2009-12-22
    • US10482926
    • 2002-07-04
    • Hiroshi YonemuraTajayuki ImamuraHiroshi NakatakeKenji SoejimaChikateru Nozaki
    • Hiroshi YonemuraTajayuki ImamuraHiroshi NakatakeKenji SoejimaChikateru Nozaki
    • C12P21/04
    • C12N9/6424C12Y304/21005
    • A genetic recombinant human thrombin is provided. Human thrombin is efficiently prepared by the genetic engineering technique comprising the steps: (1) culturing a transfectant animal cell transfected with an expression vector in which a gene encoding human prethrombin is incorporated to the downstream of a promoter so as to produce and accumulate prethrombin in culture supernatant and recovering the produced human prethrombin; (2) treating a solution containing human prethrombin recovered in step (1) with ecarin so as to convert human prethrombin into human thrombin; and (3) purifying the solution obtained after the above activation process to obtain purified human thrombin. The present invention allows for provision of human thrombin in a large scale in a safe and economical manner due to exclusion of blood-derived components.
    • 提供了基因重组人凝血酶。 通过基因工程技术有效制备人凝血酶,所述方法包括以下步骤:(1)培养用表达载体转染的转染细胞动物细胞,其中将编码人凝血酶原的基因并入启动子的下游,以产生并累积凝血酶原 培养上清液并回收生产的人凝血酶原; (2)用ecarin处理步骤(1)中回收的含有人凝血酶原的溶液,以将人凝血酶原转化为人凝血酶; (3)纯化上述活化处理后得到的溶液,得到纯化人凝血酶。 本发明允许以安全和经济的方式大规模提供人类凝血酶,因为排除了血液衍生的成分。