作者:Mengqiang Liu、Qian Jiang、Zhiyun Lu、Yan Huang、Yanfei Tan、Qing Jiang
DOI:10.1002/bio.2912
日期:2015.12
A novel fluorescent probe (CA-N) was designed and synthesized for detection of biothiols. CA-N displayed a strong fluorescence in the presence of biothiols with high sensitivity, and the mechanism for detection biothiols was based on the Michael addition reaction of a thiol group to α,β-unsaturated ketones. CA-N showed low detection limit for cysteine (Cys), homocysteine (Hcy), and glutathione (GSH), which were calculated as 3.16, 0.19 and 5.15 μM, respectively. At the same time, CA-N exhibited high selectivity toward biothiols compared with other biological amino acids. In vitro cell experiments proved that CA-N had no cytotoxicity, high cell permeability and could be employed in living cell imaging for biothiols. Copyright © 2015 John Wiley & Sons, Ltd.
一种新型荧光探针(CA-N)被设计和合成用于检测生物硫醇。CA-N在存在生物硫醇时表现出强荧光,具有高灵敏度,其检测生物硫醇的机制基于巯基与α,β-不饱和酮的迈克尔加成反应。CA-N对半胱氨酸(Cys)、同型半胱氨酸(Hcy)和谷胱甘肽(GSH)的最低检测限分别为3.16、0.19和5.15μM。同时,CA-N对生物硫醇与其他生物氨基酸相比表现出高度选择性。在体外细胞实验中证明,CA-N无细胞毒性,具有高细胞渗透性,可用于生物硫醇的活细胞成像。版权所有 © 2015 John Wiley & Sons, Ltd.