High aldehyde dehydrogenase 1A1 (ALDH1A1) activity has emerged as a reliable marker for the identification of both normal and cancer stem cells. Herein, is presented AlDeSense, a turn-on green fluorescent probe for aldehyde dehydrogenase 1A1 (ALDH1A1) and Ctrl-AlDeSense, a matching non-responsive reagent. AlDeSense exhibits a 20-fold fluorescent enhancement when treated with ALDH1A1. Through the application of surface marker antibody staining, tumorsphere assays, and assessment of tumorigenicity, the disclosed results show that cells exhibiting high AlDeSense signal intensity have properties of cancer stem cells. Herein, is also reported the development of a red congener, red-AlDeSense. Importantly, red-AlDeSense represents one of only a few examples of a turn-on sensor in the red region using the d-PeT quenching mechanism.
醛脱氢酶1A1(ALDH1A1)的高活性已成为鉴定正常细胞和癌症干细胞的可靠标记。本文介绍了
醛脱氢酶 1A1(ALDH1A1)的绿色荧光探针 AlDeSense 和与之匹配的无反应试剂 Ctrl-AlDeSense。经 ALDH1A1 处理后,AlDeSense 的荧光增强了 20 倍。通过应用表面标记
抗体染色、肿瘤球测定和肿瘤致病性评估,所披露的结果表明,表现出高 AlDeSense 信号强度的细胞具有癌症干细胞的特性。本文还报告了红色同系物--红色 AlDeSense 的开发情况。重要的是,红色 AlDeSense 是仅有的几个利用 d-PeT 淬灭机制在红色区域开启传感器的实例之一。