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    • 35. 发明申请
    • MANUFACTURING PROCESS FOR THE PRODUCTION OF POLYPEPTIDES EXPRESSED IN INSECT CELL-LINES
    • 用于生产在细胞细胞中表达的多肽的制造方法
    • WO2008073620A3
    • 2009-05-28
    • PCT/US2007083538
    • 2007-11-02
    • NEOSE TECHNOLOGIES INCDEFREES SHAWNKINEALY KYLEHERZER SIBYLLE
    • DEFREES SHAWNKINEALY KYLEHERZER SIBYLLE
    • C07K1/18A61K38/16C07K1/20C07K1/22C07K1/36C07K14/47C12P19/18
    • C12P21/02C07K1/165C07K1/18C07K1/20C07K1/36C12P21/005
    • The present invention provides a manufacturing method for polypeptides that are produced in insect cells using a baculoviral expression system. In one example, the insect cell culture is supplemented with a lipid mixture immediately prior to infection (e.g., one hour prior to infection). The polypeptides are isolated from the insect cell culture using a method that employs anion exchange or mixed-mode chromatography early in the purification process. This process step is useful to remove insect-cell derived endoglycanases and proteases and thus reduces the loss of desired polypeptide due to enzymatic degradation. In another example, mixed-mode chromatography is combined with dye-ligand affinity chromatography in a continuous-flow manner to allow for rapid processing of the insect-cell culture liquid and capture of the polypeptide. In yet another example, a polypeptide is isolated from an insect cell culture liquid using a process that combines hollow fiber filtration, mixed-mode chromatography and dye-ligand affinity in a single unit operation producing a polypeptide solution that is essentially free of endoglycanase and proteolytic activities. In a further example, the isolated polypeptides are glycopeptides having an insect specific glycosylation pattern, which are optionally conjugated to a modifying group, such as a polymer (e.g., PEG) using a glycosyltransferase and a modified nucleotide sugar.
    • 本发明提供了使用杆状病毒表达系统在昆虫细胞中产生的多肽的制备方法。 在一个实例中,昆虫细胞培养物在感染之前(例如感染前一小时)补充有脂质混合物。 使用在纯化过程早期采用阴离子交换或混合模式色谱法的方法从昆虫细胞培养物中分离多肽。 该方法步骤可用于除去昆虫细胞来源的聚糖内切酶和蛋白酶,从而减少由于酶降解导致的期望多肽的损失。 在另一个实例中,混合模式色谱法以连续流动方式与染料 - 配体亲和层析组合,以允许昆虫细胞培养液的快速加工和捕获多肽。 在另一个实例中,使用在单一单元操作中组合中空纤维过滤,混合模式色谱和染料 - 配体亲和力的方法从昆虫细胞培养液中分离多肽,产生基本上不含内聚糖和多肽的多肽溶液和蛋白水解 活动。 在另一个实例中,分离的多肽是具有昆虫特异性糖基化图案的糖肽,其可任选地使用糖基转移酶和修饰的核苷酸糖缀合至修饰基团,例如聚合物(例如PEG)。