磁微球标记物载体在高灵敏电化学发光免疫检测中的应用

报道了一种基于磁性微球作为发光标记物载体的高灵敏相思子毒素电化学发光免疫检测方法。首先在酶标板上吸附固定相思子毒素多抗,与相思子毒素作用后再与生物素化的单抗结合,形成双抗体夹心免疫复合物,然后通过生物素-链霉亲和素相互作用连接三联吡啶钌标记的亲和素包被磁性微球形成磁性微球免疫复合物,将复合物从酶标板上解离后进行电化学发光检测。利用此方法检测相思子毒素,浓度在2~200ng/L范围内与电化学发光强度呈良好的对数线性关系,拟合方程为lgY=1.295lgX+0.201(R=0.995,n=7,p〈0.0001),检出限达2ng/L。方法特异性高、重现性好,可用于痕量毒素的高灵敏检测,在临床诊断、环...

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Published in分析化学 Vol. 41; no. 12; pp. 1807 - 1811
Main Author 刘冰 童朝阳 郝兰群 刘威 穆睎惠 刘志伟 黄启斌
Format Journal Article
LanguageChinese
Published 防化研究院,国民核生化灾害防护国家重点实验室,北京102205 2013
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ISSN0253-3820
DOI10.3724/SP.J.1096.2013.30229

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Abstract 报道了一种基于磁性微球作为发光标记物载体的高灵敏相思子毒素电化学发光免疫检测方法。首先在酶标板上吸附固定相思子毒素多抗,与相思子毒素作用后再与生物素化的单抗结合,形成双抗体夹心免疫复合物,然后通过生物素-链霉亲和素相互作用连接三联吡啶钌标记的亲和素包被磁性微球形成磁性微球免疫复合物,将复合物从酶标板上解离后进行电化学发光检测。利用此方法检测相思子毒素,浓度在2~200ng/L范围内与电化学发光强度呈良好的对数线性关系,拟合方程为lgY=1.295lgX+0.201(R=0.995,n=7,p〈0.0001),检出限达2ng/L。方法特异性高、重现性好,可用于痕量毒素的高灵敏检测,在临床诊断、环境监测、生物防护等领域有较好的应用前景。
AbstractList 报道了一种基于磁性微球作为发光标记物载体的高灵敏相思子毒素电化学发光免疫检测方法。首先在酶标板上吸附固定相思子毒素多抗,与相思子毒素作用后再与生物素化的单抗结合,形成双抗体夹心免疫复合物,然后通过生物素-链霉亲和素相互作用连接三联吡啶钌标记的亲和素包被磁性微球形成磁性微球免疫复合物,将复合物从酶标板上解离后进行电化学发光检测。利用此方法检测相思子毒素,浓度在2~200ng/L范围内与电化学发光强度呈良好的对数线性关系,拟合方程为lgY=1.295lgX+0.201(R=0.995,n=7,p〈0.0001),检出限达2ng/L。方法特异性高、重现性好,可用于痕量毒素的高灵敏检测,在临床诊断、环境监测、生物防护等领域有较好的应用前景。
报道了一种基于磁性微球作为发光标记物载体的高灵敏相思子毒素电化学发光免疫检测方法.首先在酶标板上吸附固定相思子毒素多抗,与相思子毒素作用后再与生物素化的单抗结合,形成双抗体夹心免疫复合物,然后通过生物素-链霉亲和素相互作用连接三联吡啶钌标记的亲和素包被磁性微球形成磁性微球免疫复合物,将复合物从酶标板上解离后进行电化学发光检测.利用此方法检测相思子毒素,浓度在2~200 ng/L范围内与电化学发光强度呈良好的对数线性关系,拟合方程为lgY=1.2951gX+0.201 (R=0.995,n=7,p<0.0001),检出限达2 ng/L.方法特异性高、重现性好,可用于痕量毒素的高灵敏检测,在临床诊断、环境监测、生物防护等领域有较好的应用前景.
Author 刘冰 童朝阳 郝兰群 刘威 穆睎惠 刘志伟 黄启斌
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HAO Lan-Qun
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LIU Wei
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DocumentTitleAlternate A New Electrochemiluminescence Immunoassay Based on Magnetic Microbeads as Carrier of Labels
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Issue 12
Keywords Immunoassay
电化学发光
免疫检测
Abrin
Magnetic microbead
磁微球
相思子毒素
Electrochemiluminescence
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Notes LIU Bing, TONG Zhao-Yang* , HAO Lan-Qun, LIU Wei, MU Xi-Hui, LIU Zhi-Wei, HUANG Qi-Bin (Research Institute of Chemical Defence, State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China)
An ultrasensitive elctrochemiluminescense (ECL) immunoassay was proposed by using magnetic microbeads as the cartier of ECL labels for ECL signal amplification. First, polyclonal antibody (pcAb) of abrin was coated on microplate. Then, abrin was bound to pcAb. Next, biotinylated monoclonal antibody (mcAb) was conjugated to abrin, yielding the sandwich immunocomplex on the plate. After that, Ru(bpy) 23+ labeled magnetic microbeads was conjugated on the plate through specific biotin-streptavidin interaction. Finally, Ru(bpy) 23+ labeled magnetic microbeads was released from the plate and ECL of Ru (bpy)3^2+ was measured for abrin determination. A logarithmic linear relationship between ECL intensity and the concentration of abrin in the range of 2- 200μg/L was obtained, the linear regression equation was lgY= 1.
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PublicationTitle 分析化学
PublicationTitleAlternate Chinese Journal of Analytical Chemistry
PublicationTitle_FL Chinese Journal of Analytical Chemistry
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Snippet 报道了一种基于磁性微球作为发光标记物载体的高灵敏相思子毒素电化学发光免疫检测方法。首先在酶标板上吸附固定相思子毒素多抗,与相思子毒素作用后再与生物素化的单抗结合,...
报道了一种基于磁性微球作为发光标记物载体的高灵敏相思子毒素电化学发光免疫检测方法.首先在酶标板上吸附固定相思子毒素多抗,与相思子毒素作用后再与生物素化的单抗结合,...
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StartPage 1807
SubjectTerms 免疫检测
电化学发光
相思子毒素
磁微球
Title 磁微球标记物载体在高灵敏电化学发光免疫检测中的应用
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