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    • 10. 发明授权
    • Method for detecting analyte(s) using magnetic colloidal particles
    • 使用磁性胶体颗粒检测分析物的方法
    • US07332353B2
    • 2008-02-19
    • US10496114
    • 2002-11-20
    • Jean BaudryJérôme BibetteAlain Rousseau
    • Jean BaudryJérôme BibetteAlain Rousseau
    • G01N33/553
    • G01N33/5434
    • The invention concerns a method for detecting and/or quantifying at least an analyte in a liquid medium, characterized in that it consists in using magnetic colloidal particles functionalized at the surface with at least a ligand specific of the analyte to be detected and/or assayed and in that it comprises: contacting said particles with said medium to be analyzed; applying a magnetic field to said medium, at an intensity sufficient to cause said magnetic particles to be structured in the form of chains; maintaining said magnetic field for a sufficient time interval to enable coupling or combination of the analyte concerned with at least two specific ligands present respectively on two neighbouring particles of a chain; cancelling the magnetic field, and determining the presence and/or absence of said analyte and, as the case may be, its concentration via the presence and/or the absence of said permanent chains of magnetic particles.
    • 本发明涉及用于检测和/或定量液体介质中的至少一种分析物的方法,其特征在于它使用在表面官能化的至少一种被检测和/或分析的分析物的配体特异性的磁性胶体颗粒 并且其包括:使所述颗粒与待分析的介质接触; 以足以使所述磁性颗粒以链的形式构造的强度向所述介质施加磁场; 保持所述磁场足够的时间间隔,以使所述分析物与分别存在于链的两个相邻颗粒上的至少两种特异性配体相耦合或组合; 消除磁场,并且通过所述永久磁性颗粒的存在和/或不存在来确定所述分析物的存在和/或不存在以及视情况而定的浓度。