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Laminar flow chamber

Company: Azbil Telstar
Catalog#: BV-100
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Expression and Ni-NTA-Agarose Purification of Recombinant Hepatitis C Virus E2 Ectodomain Produced in a Baculovirus Expression System
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2018-10-05
[Abstract]  In this protocol, we describe the production and purification of the ectodomain of the E2661 envelope protein (amino acids 384-661) of the Hepatitis C virus, which plays a fundamental role in the entry of the virus into the host cell. This protein has been expressed in both prokaryotic and eukaryotic systems but in small quantities or without native protein characteristics. In our case, we use the Baculovirus expression system in insect cells. E2661 is secreted into the extracellular medium and purified by means of affinity chromatography a Ni-NTA-column because the protein has a tag of six histidines at its amino terminal end. The purified protein possesses a native-like conformation and it is produced in large quantities, around 5-6 mg per liter. [摘要]  在该协议中,我们描述了丙型肝炎病毒的E2 661 包膜蛋白(氨基酸384-661)的胞外域的产生和纯化,其在病毒进入中起基础作用。 进入宿主细胞。 该蛋白质已经在原核和真核系统中表达,但是少量或没有天然蛋白质特征。 在我们的例子中,我们在昆虫细胞中使用杆状病毒表达系统。 E2 661 被分泌到细胞外培养基中并通过亲和层析Ni-NTA-柱纯化,因为该蛋白质在其氨基末端具有六个组氨酸的标签。 纯化的蛋白质具有天然样构象,并且大量生产,每升约5-6mg。
【背景】丙型肝炎病毒(HCV)是全世界慢性肝炎,肝硬化和肝细胞癌的主要原因(Major et al。,2001; Alter,2006)。此时,没有HCV疫苗,抗病毒药物用于治疗HCV感染(Imran et al。,2014)。然而,治疗费用昂贵且不是100%有效(Kohli et al。,2014)。 HCV包膜糖蛋白E2负责与细胞受体的相互作用,因此它是研究病毒感染周期的第一步的主要候选者。由于糖基化和聚集,先前的表达系统产生低水平的异质蛋白质,并且难以区分经历生产性和非生产性折叠的分子(Flint ...

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