IMPROVED METHOD OF PURIFYING TFPI AND TFPI ANALOGS
    3.
    发明申请
    IMPROVED METHOD OF PURIFYING TFPI AND TFPI ANALOGS 审中-公开
    改进TFPI和TFPI类似物的方法

    公开(公告)号:WO2005019265A1

    公开(公告)日:2005-03-03

    申请号:PCT/US2004/000234

    申请日:2004-01-08

    CPC classification number: C07K5/1008 A61K38/00 C07K5/1013 C07K14/8114

    Abstract: Highly purified preparations of TFPI or TFPI analogs can be prepared using a method that generally involves the following steps: (1) expression of TFPI or TFPI analog in E. coli, (2 ) isolation of refractile bodies, (3) dissolution of the refractile bodies and refolding of the expressed TFPI or TFPI analog, (4) SP-Sepharose fast flow (FF) chromatography, (5) a first concentration and diafiltration step, (6) Q-Sepharose high (HP) performance chromatography, (7) butyl hydrophobic interaction chromatography (HIC), (8) SP-Sepharose HP chromatography, and (9) a second concentration/diafiltration step. Less than about 12% of the TFPI or TFPI analog molecules in such preparations are modified TFPI or TFPI analog species ( i.e ., oxidized, carbamylated, acetylated, deamidated, aggregated, or misfolded species).

    Abstract translation: TFPI或TFPI类似物的高纯度制剂可以使用通常包括以下步骤的方法制备:(1)在大肠杆菌中表达TFPI或TFPI类似物,(2)分离折射体,(3)折射体的溶解 (4)SP-Sepharose快速流动(FF)色谱法,(5)第一次浓缩和渗滤步骤,(6)Q-Sepharose高(HP)性能色谱法,(7)表征TFPI或TFPI类似物的体内和重折叠,(4) 丁基疏水相互作用层析(HIC),(8)SP-Sepharose HP色谱法和(9)第二浓度/渗滤步骤。 在这种制剂中,小于约12%的TFPI或TFPI类似物分子是修饰的TFPI或TFPI类似物(即氧化的,氨基甲酰化的,乙酰化的,脱酰胺的,聚集的或错误折叠的物种)。

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