SARS virus spike gene fra gment was expressed by Ecoli expr ession systemThe fragment enclose s major neutralization epitope of the virusThe expressed protein wa s purified and an ELISA method was set upBy...SARS virus spike gene fra gment was expressed by Ecoli expr ession systemThe fragment enclose s major neutralization epitope of the virusThe expressed protein wa s purified and an ELISA method was set upBy using the recombinant,tw elve patients’ sera were detected The recombinant SARS coronavirus s pike protein offers an efficient wa y for serological diagnosis and is useful for epidemiological survey and vaccin e展开更多
SARS coronavirus N gene w as expressed by Ecoli expression systemThe expressed protein was p urified and an ELISA method was se t up for detection of SARS virus i nfected patient’s serum antibodyT he recomb...SARS coronavirus N gene w as expressed by Ecoli expression systemThe expressed protein was p urified and an ELISA method was se t up for detection of SARS virus i nfected patient’s serum antibodyT he recombinant SARS coronavirus N protein offers an efficient way fo r serological diagnosis and is use ful for epidemiological study and vaccine展开更多
目的目前常用的丙型肝炎病毒(hepatitis C virus,HCV)血清学检测试剂都基于3~6个重组蛋白或合成多肽,抗原制备繁琐且诊断效果参差不齐。制备一种诊断效能优良的HCV抗原势在必行。方法利用原核表达系统和层析纯化技术制备涵盖我国HCV主...目的目前常用的丙型肝炎病毒(hepatitis C virus,HCV)血清学检测试剂都基于3~6个重组蛋白或合成多肽,抗原制备繁琐且诊断效果参差不齐。制备一种诊断效能优良的HCV抗原势在必行。方法利用原核表达系统和层析纯化技术制备涵盖我国HCV主要流行株(1b和2a)的6个免疫显性区域的多表位HCV抗原(命名为H65),并以此建立HCV-IgG的血清学检测方法,通过对部分HCV阴阳性血清的检测,初步评价了H65抗原的免疫活性。结果融合Trx标签的H65抗原为可溶性形式表达,纯化后蛋白浓度可达2.991mg/ml,纯度为94.53%;Western blot法检测实验初步证实了蛋白H65的抗原性;应用某商品化试剂盒与H65抗原血清检测方法,对50份HCV阴阳性血清进行检测,McNemer检验显示,新制备诊断抗原与“金标准”比较,P>0.05,Kappa>0.75,且与某商品化试剂盒比较,P>0.05,Kappa>0.75,提示一致性优异。结论H65具有良好的免疫活性,为进一步应用多表位HCV抗原为基础的HCV-IgG体外诊断试剂提供了依据。展开更多
文摘SARS virus spike gene fra gment was expressed by Ecoli expr ession systemThe fragment enclose s major neutralization epitope of the virusThe expressed protein wa s purified and an ELISA method was set upBy using the recombinant,tw elve patients’ sera were detected The recombinant SARS coronavirus s pike protein offers an efficient wa y for serological diagnosis and is useful for epidemiological survey and vaccin e
文摘SARS coronavirus N gene w as expressed by Ecoli expression systemThe expressed protein was p urified and an ELISA method was se t up for detection of SARS virus i nfected patient’s serum antibodyT he recombinant SARS coronavirus N protein offers an efficient way fo r serological diagnosis and is use ful for epidemiological study and vaccine
文摘目的目前常用的丙型肝炎病毒(hepatitis C virus,HCV)血清学检测试剂都基于3~6个重组蛋白或合成多肽,抗原制备繁琐且诊断效果参差不齐。制备一种诊断效能优良的HCV抗原势在必行。方法利用原核表达系统和层析纯化技术制备涵盖我国HCV主要流行株(1b和2a)的6个免疫显性区域的多表位HCV抗原(命名为H65),并以此建立HCV-IgG的血清学检测方法,通过对部分HCV阴阳性血清的检测,初步评价了H65抗原的免疫活性。结果融合Trx标签的H65抗原为可溶性形式表达,纯化后蛋白浓度可达2.991mg/ml,纯度为94.53%;Western blot法检测实验初步证实了蛋白H65的抗原性;应用某商品化试剂盒与H65抗原血清检测方法,对50份HCV阴阳性血清进行检测,McNemer检验显示,新制备诊断抗原与“金标准”比较,P>0.05,Kappa>0.75,且与某商品化试剂盒比较,P>0.05,Kappa>0.75,提示一致性优异。结论H65具有良好的免疫活性,为进一步应用多表位HCV抗原为基础的HCV-IgG体外诊断试剂提供了依据。
