Utilization of Rhenium(I) Polypyridine Complexes Featuring a Dinitrophenylsulfonamide Moiety as Biothiol‐Selective Phosphorogenic Bioimaging Reagents and Photocytotoxic Agents
作者:Guang‐Xi Xu、Lawrence Cho‐Cheung Lee、Cyrus Wing‐Ching Kwok、Peter Kam‐Keung Leung、Jing‐Hui Zhu、Kenneth Kam‐Wing Lo
DOI:10.1002/ejic.202100364
日期:2021.9.14
photoexcitation, the DNPS complexes exhibited very weak luminescence as a result of photoinduced electron transfer (PET) from the excited rhenium(I) diimine moiety to the DNPS quenching unit. However, upon treatment with glutathione (GSH), the DNPS moiety was removed, resulting in emission enhancement of the solutions (I/Io=12.6–22.2). After reaction of the DNPS complexes with GSH in living cells,
我们在此报告了一系列以 2,4-二硝基苯磺酰胺 (DNPS) 单元为特征的铼 (I) 多吡啶配合物作为磷源生物成像试剂和光细胞毒剂。生物硫醇选择性铼(I)多吡啶配合物[Re(N^N)(CO) 3 (py-DNPS)](CF 3 SO 3 ) (py-DNPS=3-((2,4-二硝基苯磺酰基)氨基甲基)吡啶) 及其不含 DNPS 的对应物 [Re(N^N)(CO) 3 (吡啶)](CF 3 SO 3) 被合成和表征。在光激发时,由于光诱导电子转移 (PET) 从激发的铼 (I) 二亚胺部分到 DNPS 淬灭单元,DNPS 复合物表现出非常弱的发光。然而,在用谷胱甘肽(GSH)处理后,DNPS 部分被去除,导致溶液的发射增强(I / I o =12.6-22.2)。在活细胞中 DNPS 复合物与 GSH 反应后,观察到强烈的细胞内发射和有效的光细胞毒性。此外,二亚胺配体与甲苯磺酰胺单元的修饰赋予复合物内质网