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Human granulocyte colony stimulating factor (hG-CSF): cloning overexpression purification and characterization

机译:人粒细胞集落刺激因子(hG-CSF):克隆过表达纯化和鉴定

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摘要

BackgroundBiopharmaceutical drugs are mainly recombinant proteins produced by biotechnological tools. The patents of many biopharmaceuticals have expired, and biosimilars are thus currently being developed. Human granulocyte colony stimulating factor (hG-CSF) is a hematopoietic cytokine that acts on cells of the neutrophil lineage causing proliferation and differentiation of committed precursor cells and activation of mature neutrophils. Recombinant hG-CSF has been produced in genetically engineered Escherichia coli (Filgrastim) and successfully used to treat cancer patients suffering from chemotherapy-induced neutropenia. Filgrastim is a 175 amino acid protein, containing an extra N-terminal methionine, which is needed for expression in E. coli. Here we describe a simple and low-cost process that is amenable to scaling-up for the production and purification of homogeneous and active recombinant hG-CSF expressed in E. coli cells.
机译:背景技术生物药物主要是通过生物技术工具生产的重组蛋白。许多生物制药的专利已经过期,因此目前正在开发生物仿制药。人粒细胞集落刺激因子(hG-CSF)是一种造血细胞因子,作用于嗜中性粒细胞谱系的细胞,引起定型前体细胞的增殖和分化以及成熟嗜中性粒细胞的活化。重组hG-CSF已在基因工程大肠杆菌(Filgrastim)中生产,并成功用于治疗患有化学疗法诱发的中性粒细胞减少症的癌症患者。 Filgrastim是一种175个氨基酸的蛋白质,含有一个额外的N端蛋氨酸,这是在大肠杆菌中表达所必需的。在这里,我们描述了一个简单且低成本的过程,该过程适合扩大规模生产和纯化在大肠杆菌细胞中表达的均质和活性重组hG-CSF。

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