Glutathione（GSH）, as the most abundant intracellular biothiol, plays an important role in the redox homeostasis of the organism. Abnormal concentrations of GSH in cells may lead to many malignant diseases, such as c...Glutathione（GSH）, as the most abundant intracellular biothiol, plays an important role in the redox homeostasis of the organism. Abnormal concentrations of GSH in cells may lead to many malignant diseases, such as cancer, liver damage and neurodegenerative diseases. It is urgent to develop effective methods to detect GSH in living organisms. In this work, a new two-photon ratiometric fluorescent probe Co-GSH based on the coumarin-chalcone dye platform was judiciously developed. Based on the Michael-addition reaction, Co-GSH was able to identify GSH with high selectivity and sensitivity. Furthermore, assisted by laser-scanning confocal microscopy, Co-GSH could specifically response GSH over the other biothiols, including Cys and Hcy, in living HeLa cells by using one- and two-photon modes.展开更多
基金Supported by the National Natural Science Foundation of China（Nos.21472067, 21672083）, the Taishan Scholar Foundation, China（No.TS201511041） and the Startup Fund of University of Jinan, China（No. 309-10004）.
文摘Glutathione（GSH）, as the most abundant intracellular biothiol, plays an important role in the redox homeostasis of the organism. Abnormal concentrations of GSH in cells may lead to many malignant diseases, such as cancer, liver damage and neurodegenerative diseases. It is urgent to develop effective methods to detect GSH in living organisms. In this work, a new two-photon ratiometric fluorescent probe Co-GSH based on the coumarin-chalcone dye platform was judiciously developed. Based on the Michael-addition reaction, Co-GSH was able to identify GSH with high selectivity and sensitivity. Furthermore, assisted by laser-scanning confocal microscopy, Co-GSH could specifically response GSH over the other biothiols, including Cys and Hcy, in living HeLa cells by using one- and two-photon modes.
