申请人:Xiao Yi
公开号:US10683507B2
公开(公告)日:2020-06-16
The subject invention provides methods, assays, and products for detecting small molecules in a sample, in particular, in both clinical and field settings. The method for detecting a small-molecule target, preferably, a synthetic cathinone in a sample comprises contacting the sample with an aptamer-based sensor selective for the small-molecule target, and detecting the small-molecule target in the sample. Specifically, the method utilizes an aptamer-based sensor comprising a dye binding to a three-way junction binding domain of an aptamer. Binding of small-molecule target to the aptamer displaces the dye, generating a spectroscopic signal that can be used for detection of the small-molecule target and quantitative measurement of the target concentration.
本发明提供了检测样品中小分子的方法、检测方法和产品,特别是在临床和现场环境中。检测样品中的小分子目标物(最好是合成卡西酮)的方法包括将样品与对小分子目标物有选择性的基于适配体的传感器接触,并检测样品中的小分子目标物。具体来说,该方法利用了一种基于适配体的传感器,该传感器包括与适配体的三向接合结合域结合的染料。小分子目标物与适配体结合会置换染料,产生光谱信号,该信号可用于检测小分子目标物和定量测量目标物浓度。