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    • 8. 发明授权
    • Biofunctional magnetic nanoparticles for pathogen detection
    • 用于病原体检测的生物功能磁性纳米颗粒
    • US07754444B2
    • 2010-07-13
    • US11159882
    • 2005-06-23
    • Bing XuPak Leung HoHongwei Gu
    • Bing XuPak Leung HoHongwei Gu
    • C12Q1/70C12Q1/04
    • G01N33/54326G01N33/56911G01N33/56983Y10S977/90
    • This invention provides a method of detecting pathogens comprising the steps of: (a) contacting a sufficient amount of biofunctional magnetic nanoparticles with an appropriate sample for an appropriate period of time to permit the formation of complexes between the pathogens in the sample and the nanoparticles; (b) using a magnetic field to aggregate said complexes; and (c) detecting said complexes. The method may further comprise the additional step of removing said complexes. The biofunctional magnetic nanoparticles are preferably a conjugate of vancomycin and FePt. The pathogens may be bacteria or viruses, and the sample may be a solid, liquid, or gas. Detection may involve conventional fluorescence assay, enzyme-linked immunosorbent assay (ELISA), optical microscope, electron microscope, or a combination thereof. The sensitivity of detection for the method is at least as low as 10 colony forming units (cfu) of the pathogens in one milliliter of solution within one hour.
    • 本发明提供了一种检测病原体的方法,包括以下步骤:(a)将足量的生物功能磁性纳米颗粒与合适的样品接触适当的时间段,以允许样品中的病原体与纳米颗粒之间形成复合物; (b)使用磁场来聚集所述络合物; 和(c)检测所述复合物。 该方法还可以包括去除所述复合物的附加步骤。 生物功能磁性纳米颗粒优选为万古霉素和FePt的缀合物。 病原体可以是细菌或病毒,样品可以是固体,液体或气体。 检测可以涉及常规荧光测定,酶联免疫吸附测定(ELISA),光学显微镜,电子显微镜或其组合。 在1小时内,该方法的检测灵敏度至少低于一毫升溶液中病原体的10个菌落形成单位(cfu)。