Development of Rofecoxib-Based Fluorescent Probes and Investigations on Their Solvatochromism, AIE Activity, Mechanochromism, and COX-2-Targeted Bioimaging
作者:Lijun Xie、Renfu Li、Biyun Zheng、Zuoxu Xie、Xuefen Fang、Yanqi Wang、Gregory D. Cuny、Zhenli Li、Bin Lin、Xueyuan Chen、Ming Hu
DOI:10.1021/acs.analchem.1c01978
日期:2021.9.7
attractive fluorescence properties, such as tunable blue-red emission, solvatochromism, aggression-induced emission behavior, and mechanochromism. Notably, the emission of 2a16 can be switched between green-yellow in the crystalline state and red-orange in the amorphous state by grinding and fuming treatments. Furthermore, the highly fluorescent compound 2a16 (Φf = 0.94 in powder) displayed a much stronger
Cyclooxygenase-2 (COX-2) 荧光探针是用于癌症早期诊断的有前途的工具。传统上,COX-2 探针的设计是通过一个灵活的接头连接两个部分,一个荧光团和一个 COX-2 结合单元。在此,通过整合方法将结合单元和荧光团合二为一,通过对罗非昔布的一步修饰,开发了一类新的 COX-2 特异性荧光探针。其中,几种新的罗非昔布类似物不仅表现出仍然有效的 COX-2 结合能力,而且还表现出有吸引力的荧光特性,如可调蓝红光发射、溶剂化变色、攻击诱导发射行为和机械致变色。值得注意的是,2a16的排放通过研磨和熏蒸处理,可以在结晶态的绿黄色和非晶态的红橙色之间切换。此外,与COX-2 表达最低的 RAW264.7 正常细胞相比,高荧光化合物2a16(粉末中的Φ f = 0.94)在过度表达 COX-2 的 HeLa 癌细胞中显示出更强的 COX-2 荧光成像。最重要的是,2a16可以通过靶向