基于荧光微球的病毒性出血热IgM抗体检测方法的建立

摘要

Objective To develop and evaluate a multiplex detection of IgM antibodies to pathogens caused viral hemorrhagic fever. Methods The nucleocapsid proteins (NP) of HTN, SEO, Puu MBV, Lassa, RFV and HPS viruses expressed in prokaryotic cells and purified were coupled to 7 different xMAP fluorescent microbeads. The assay was evaluated and optimized when screened against a panel of reference sera collected from HFRS patients, and compared to commonly used MacELISA Kits. Results For detection of anti-NP antibodies, the sensitivity and specificity of the assay were comparable to a commonly used MacELISA kit, but it could detect different antigen specific antibodies in one reaction simultaneously. Conclusion A robust, rapid and multiplex assay based on NPs could be developed via Luminex xMAP platform for laboratory diagnosis of viral hemorrhagic fever and seroepidemiological investigation.%目的 建立并初步评价多元检测引起病毒性出血热病原体特异性IgM抗体的方法.方法 在原核细胞中重组表达纯化马尔堡病毒、拉沙热病毒、裂谷热病毒、肺综合征出血热汉坦病毒、汉滩病毒、Seoul病毒及普马拉病毒核蛋白(NP),共价偶联到7种不同的xMAP荧光微球上.优化评价偶联效果,通过参比血清中相应病毒NP特异性抗体检测,评估检测方法,并与常规使用的MacELISA方法进行比较.结果 在Luminex平台的基础上建立了多元检测引起病毒性出血热的病毒核蛋白特异性抗体的方法,特异性与敏感性与常规应用的特异性抗体检测MacELISA试剂盒相当,但可以同时排查多个病毒感染情况.结论 利用Luminex xMAP技术建立基于病毒核蛋白多元检测方法快速敏感,操作简单,可以用于病毒性出血热的检测和血清流行病学调查.