Reasonably constructed NIR fluorescent probes based on dicyanoisophorone skeleton for imaging ONOO− in living cells
作者:Jeewon Chung、Heejeong Kim、Haidong Li、Juyoung Yoon
DOI:10.1016/j.dyepig.2021.109665
日期:2021.11
ratio. Based on the optimized spectral results and the requirement of biocompatibility, the fluorescent probe NIR-dCl was successfully designed and fabricated for the detection of ONOO−. Upon the addition of ONOO− in solution, an obvious NIR fluorescent signal at 680 nm was observed. Moreover, the probe NIR-dCl exhibited high selectivity for sensing ONOO−. Cell imaging results confirmed that probe NIR-dCl
过氧亚硝酸盐 (ONOO - ) 是一种活性氮 (RNS),参与各种细胞过程,包括炎症、细胞凋亡和坏死。因此,对于成像内源性ONOO一个强大的工具的开发-是关于揭示其潜在的生理或病理功能重要。在这项工作中,我们在双氰基异佛尔酮骨架羟基的邻位引入二卤素(Cl、Br和I)以调整其p Ka 以更适合在具有高信号的生理环境中进行生物成像-噪声比。基于优化的光谱结果和生物相容性的要求,荧光探针NIR-dCl成功设计和制造用于检测ONOO -。在溶液中加入 ONOO -后,在 680 nm 处观察到明显的 NIR 荧光信号。此外,探针NIR-dCl对传感 ONOO -表现出高选择性。细胞成像结果证实探针NIR-dCl能够对活细胞中的外源性和内源性 ONOO -进行成像。因此,我们相信探针NIR-dCl可以成为研究生化过程和 ONOO -相关疾病的有效工具。