A π-Stacking Based Fluorescent Probe for Labeling of Flavin Analogues in Live Cells through Unusual FRET Process
作者:Shayeri Biswas、Sourav Sarkar、Anushree Shil、Tatiana S. Demina、Kyo Han Ahn、Sankarprasad Bhuniya
DOI:10.1021/acs.analchem.1c04024
日期:2022.3.1
The flavin adenine dinucleotide (FAD) is an indispensable coenzyme in live cells. It acts as a catalyst in many redox responsive metabolic reactions, including oxidative phosphorylation in mitochondria. The real-time monitoring of flavin is important to understand the disorder in the metabolic process, redox system, etc. Thus, we have developed a fluorescent probe CPy-1 that noncovalently binds with
黄素腺嘌呤二核苷酸(FAD)是活细胞中不可缺少的辅酶。它在许多氧化还原反应性代谢反应中充当催化剂,包括线粒体中的氧化磷酸化。黄素的实时监测对于了解代谢过程、氧化还原系统等的紊乱很重要。因此,我们开发了一种荧光探针CPy-1,它与黄素非共价结合以表现出FRET过程。1 H-NMR和对接研究表明,黄素与CPy-1之间存在强烈的疏水相互作用。此外,黄素中的异恶嗪环与CPy-1的喹啉和香豆素部分之间的 π-π 堆积有利于自组装。无毒探针CPy-1可以根据内源性FAD的表达区分癌细胞和正常细胞。