Novel ratiometric fluorescent probe for real-time detection of alkaline phosphatase and its application in living cells
作者:Xiaoqian Huang、Xiangzhu Chen、Shijun Chen、Xueyan Zhang、Lin Wang、Shicong Hou、Xiaodong Ma
DOI:10.1016/j.saa.2021.119953
日期:2021.11
A novel ratiometric fluorescent probe has been developed through a simple synthetic route for the detection of alkaline phosphatase(ALP) in aqueous media and for fluorescence imaging in living cells. The introduction of a spontaneous-degradation spacer in the design of the fluorescent probe is beneficial for the ratio detection method and allows the selection of a fluorophore with an amino group. Under
通过一种简单的合成途径,开发了一种新型比例荧光探针,用于检测水性介质中的碱性磷酸酶(ALP)和用于活细胞中的荧光成像。在荧光探针的设计中引入自发降解间隔基对于比率检测方法是有益的,并且允许选择具有氨基的荧光团。在ALP催化下,磷酸单酯键断裂;随后是1,4-消除,氨基甲酸酯部分的分解以及随后形成的4-amine-1,8-萘二甲酰亚胺荧光团。探针APN响应ALP表现出从蓝色到绿色的显着荧光颜色变化,并且探针溶液的荧光强度比(F 550 /F 480)与ALP的浓度在0至100 UL -1之间具有良好的线性关系。我们的研究表明,APN在识别ALP方面显示出很高的准确度,检出限低至0.16 UL -1。此外,该探针显示出非常好的生物相容性,这有利于其在生物系统中的应用。