Provided herein are methods, systems, and devices for detecting and/or identifying one or more specific microorganisms in a culture sample. Indicator particles, such as surface enhanced Raman spectroscopy (SERS)-active nanoparticles, each having associated therewith one or more specific binding members having an affinity for the one or more microorganisms of interest, can form a complex with specific microorganisms in the culture sample. Further, agitating magnetic capture particles also having associated therewith one or more specific binding members having an affinity for the one or more microorganisms of interest can be used to capture the microorganism-indicator particle complex and concentrate the complex in a localized area of an assay vessel for subsequent detection and identification. The complex can be dispersed, pelleted, and redispersed so that the culture sample can be retested a number of times during incubation so as to allow for real-time monitoring of the culture sample.
本文提供了用于检测和/或识别培养样本中一种或多种特定微
生物的方法、系统和设备。指示剂颗粒,如表面增强拉曼光谱(
SERS)活性纳米颗粒,每个都有一个或多个与一个或多个相关微
生物具有亲和力的特异性结合构件,可与培养样本中的特异性微
生物形成复合物。此外,搅拌磁性捕获颗粒也与一种或多种对一种或多种相关微
生物具有亲和力的特异性结合构件相关联,可用于捕获微
生物-指示剂颗粒复合物,并将复合物集中在检测容器的局部区域,以便随后进行检测和鉴定。复合物可以被分散、造粒和再分散,以便在培养过程中对培养样本进行多次再检测,从而实现对培养样本的实时监测。