Red-Emitting Fluorescent Probe for Detection of γ-Glutamyltranspeptidase and Its Application of Real-Time Imaging under Oxidative Stress in Cells and <i>in Vivo</i>
作者:Feiyan Liu、Zhen Wang、Wenli Wang、Jian-Guang Luo、Lingyi Kong
DOI:10.1021/acs.analchem.8b00994
日期:2018.6.19
(GGT) plays critical roles in regulating various physiological/pathophysiological processes including the intracellular redox homeostasis. However, an effective fluorescent probe for dissecting the relationships between GGT and oxidative stress in vivo remains largely unexplored. Herein, we present a light-up fluorescent probe (DCDHF-Glu) with long wavelength emission (613 nm) for the highly sensitive
γ-谷氨酰转肽酶(GGT)在调节各种生理/病理生理过程(包括细胞内氧化还原稳态)中起关键作用。然而,在体内仍然存在用于剖析GGT与氧化应激之间关系的有效荧光探针。本文中,我们提出了一种长波长发射(613 nm)的发光荧光探针(DCDHF-Glu),用于以双氰基亚甲基二氢呋喃衍生物为荧光报告分子,以γ-谷氨酰基为酶活性触发基团,用于高灵敏和选择性检测GGT。 。DCDHF-Glu具有在活细胞和小鼠中实时成像内源性GGT的能力。特别是DCDHF-Glu可以直接实时观察HepG2细胞和LO2细胞中以及体内的药物诱导的氧化应激下GGT的上调,生动地暗示了其在GGT相关的生物事件中阐明GGT功能的出色能力。