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Recombinant HIV-1 p24 protein: cloning, expression, purification and use in the development of ELISA kits

机译:重组HIV-1 p24蛋白:克隆,表达,纯化以及在ELISA试剂盒开发中的用途

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摘要

A simple method for purification of recombinant p24 (rp24) of human immunodeficiency virus type 1 (HIV-1) from Escherchia coli is described. The protein was over-expressed in E. coli (BL21 IDE3) cells to levels of - 30% total cell protein in the soluble fraction. The recombinant protein was extracted and purified to near homogeneity by simple ion-exchange steps followed by gel filtration. The recombinant protein in combination with synthetic peptides from immuno-dominant stretches derived from the ‘envelope’ proteins of HIV-1 and HIV-2 was used for development of an ELISA kit, ELIK HIV 1 & 2 for detection of antibodies against the virus in human serum and/or plasma. The kit was found to have 99.63% sensitivity and 99.88% specificity in a performance study using more than 2100 welldefined samples.
机译:描述了一种从大肠杆菌纯化1型人类免疫缺陷病毒(HIV-1)重组p24(rp24)的简单方法。该蛋白质在大肠杆菌(BL21 IDE3)细胞中过表达,至可溶性部分中总细胞蛋白质的水平为-30%。通过简单的离子交换步骤,然后进行凝胶过滤,提取重组蛋白并纯化至接近均一。重组蛋白与来自HIV-1和HIV-2的“包膜”蛋白的免疫优势片段合成肽结合在一起,用于开发ELISA试剂盒,ELIK HIV 1和2,用于检测抗HIV的抗体。人血清和/或血浆。在使用2100多个明确定义的样品进行的性能研究中,发现该试剂盒具有99.63%的敏感性和99.88%的特异性。

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