Förster Resonance Energy Transfer-Based Fluorescent Probe for the Selective Imaging of Hydroxylamine in Living Cells
作者:Baoli Dong、Minggang Tian、Xiuqi Kong、Wenhui Song、Yaru Lu、Weiying Lin
DOI:10.1021/acs.analchem.9b02737
日期:2019.9.3
in many biological processes, and therefore, real-time imaging of HA is of great importance for the in-depth study of its physiological and pathological functions. However, a HA-specific fluorescent probe is currently lacking primarily because the highly selective HA-responsive site is undeveloped. To address this critical issue, we present a HA-specific FRET-based fluorescent probe (RhChr) for the selective
羟胺(HA)是细胞代谢的重要产物,在许多生物学过程中都起着重要作用,因此,对HA进行实时成像对于深入研究其生理和病理功能非常重要。但是,目前缺乏HA特异性荧光探针的主要原因是尚未开发出高度选择性的HA响应位点。为了解决这个关键问题,我们提出了一种HA特异性的基于FRET的荧光探针(RhChr),用于选择性检测活体系统中的HA。受aza-Michael加成反应的启发,不饱和系统附加亚胺离子被用作新的HA特异性反应位点。针对HA,RhChr提供了比生物硫醇和氨水对HA具有出色选择性的比例信号输出。我们已经证明,RhChr可用于活细胞内源性HA的比例成像以及活体器官中黄嘌呤氧化酶(XOD)活性的评估。