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    • 4. 发明申请
    • PROTEIN DETECTION
    • 蛋白质检测
    • WO2005119265A1
    • 2005-12-15
    • PCT/GB2005/002153
    • 2005-06-01
    • CAMBRIDGE UNIVERSITY TECHNICAL SERVICES LIMITEDKLENERMAN, DavidLI, Haitao
    • KLENERMAN, DavidLI, Haitao
    • G01N33/68
    • G01N33/6803G01N33/54306G01N33/582
    • Provided are methods and kits for detecting a protein analyte in a sample, the methods comprising the steps of: (i) providing a sample solution, (ii) providing at least two ligands (e.g. antiboides) capable of binding specifically to the protein analyte, each ligand being labelled with a different fluorophore, which fluorophores are excitable by spectrally separated wavelengths of light, (iii) combining the sample solution and the ligands to form a detection sample such that protein analyte if present is labelled with the at least two ligands, and wherein each ligand is present at a concentration of less than 1 nM,(iv) illuminating the sample solution with at least two coherent light beams having wavelengths capable of exciting the fluorophores, which beams coincide to form a coincident probe volume within the sample solution, (v) detecting the number of coincident fluorescent events within the coincident probe volume over a period of time. The sensitive detection system can be used to detect analytes at very low concentrations, for example in body fluids.
    • 提供了用于检测样品中的蛋白质分析物的方法和试剂盒,所述方法包括以下步骤:(i)提供样品溶液,(ii)提供能够特异性结合蛋白质分析物的至少两种配体(例如抗体) 每个配体用不同的荧光团标记,该荧光团可通过光谱分离的光波长激发,(iii)将样品溶液和配体结合以形成检测样品,使得如果存在的蛋白质分析物用至少两种配体标记, 并且其中每个配体以小于1nM的浓度存在,(iv)用具有能够激发荧光团的波长的至少两个相干光束照射样品溶液,该光束重合以在样品溶液内形成一致的探针体积 ,(v)在一段时间内检测符合探针体积内的重合荧光事件的数量。 敏感检测系统可用于以非常低的浓度检测分析物,例如体液。