Making Protein Degradation Visible: Discovery of Theranostic PROTACs for Detecting and Degrading NAMPT
作者:Junfei Cheng、Shipeng He、Jun Xu、Min Huang、Guoqiang Dong、Chunquan Sheng
DOI:10.1021/acs.jmedchem.2c01243
日期:2022.12.8
Proteolysis-targeting chimera (PROTAC) is emerging as a promising technology in targeted protein degradation and drug discovery. However, there is still a lack of effective chemical tools to real-time detect and track the protein degradation. Herein, the first fluorescent and theranostic PROTACs were designed for imaging the degradation of nicotinamide phosphoribosyltransferase (NAMPT) in living cells
蛋白水解靶向嵌合体 (PROTAC) 正在成为靶向蛋白质降解和药物发现领域的一项有前景的技术。然而,仍然缺乏有效的化学工具来实时检测和跟踪蛋白质降解。在此,第一个荧光和治疗诊断 PROTAC 被设计用于对活细胞中烟酰胺磷酸核糖转移酶 (NAMPT) 的降解进行成像。化合物B4被证明是一种环境敏感的荧光 PROTAC,可有效降解 NAMPT (DC 50 = 8.4 nM),并实现 A2780 细胞中降解的可视化。作为一种治疗诊断剂,PROTAC B4可显着减少烟酰胺腺嘌呤二核苷酸 (NAD + ),并在体外和体内发挥有效的抗肿瘤活性。总的来说,这项概念验证研究为蛋白质降解过程的实时可视化和提高 PROTAC 的诊断和治疗效果提供了一种新策略。