Disclosed herein are novel quinone methide analog precursors and embodiments of a method and a kit of using the same for detecting one or more targets in a biological sample. The method of detection comprises contacting the sample with a detection probe, then contacting the sample with a labeling conjugate that comprises an enzyme. The enzyme interacts with a quinone methide analog precursor comprising a detectable label, forming a reactive quinone methide analog, which binds to the biological sample proximally to or directly on the target. The detectable label is then detected. In some embodiments, multiple targets can be detected by multiple quinone methide analog precursors interacting with different enzymes without the need for an enzyme deactivation step.
本文披露了一种新型的醌甲
烯类似物前体,以及使用该前体的方法和套件的实施例,用于检测
生物样本中的一个或多个靶标。检测方法包括将样本与检测探针接触,然后将样本与包含酶的标记共轭物接触。酶与包含可检测标记的醌甲
烯类似物前体相互作用,形成具有可检测标记的反应性醌甲
烯类似物,该类似物与
生物样本中的靶标近距离或直接结合。然后检测可检测标记。在某些实施例中,通过多个醌甲
烯类似物前体与不同酶相互作用,无需酶去活化步骤即可检测多个靶标。