A red-emitting ratiometric fluorescent probe with large Stokes shift and emission peak shift for imaging hypochlorous acid in living cells and zebrafish
作者:Yan Zhang、Haiyan Yang、Mingxin Li、Shuai Gong、Jie Song、Zhonglong Wang、Shifa Wang
DOI:10.1016/j.dyepig.2021.109861
日期:2022.1
BIDID itself featured an extremely large Stokes shift (241 nm) and exhibited a bright red emission at 641 nm. Upon treating with HClO, the CC bond of BIDID was exclusively broken, thereby resulting in the generation of compound BID (4-(5,5-dimethyl-4,5,6,7-tetrahydro-1H-4,6-methanobenzo[d]imidazole-2-yl)benzalde-hyde) with a remarkably hypochromatic-shifted emission at 501 nm. As expected, this probe
具有强氧化性的次氯酸 (HClO) 在生物体固有免疫系统中对攻击性微生物的抵抗力起着至关重要的作用。然而,过量的 HClO 会导致氧化应激和细胞损伤,这与许多疾病有关。在此,一种新型的基于 nopinone 的比例荧光探针BIDID (2-(4-(5,5-dimethyl-4,5,6,7-tetr-ahydro-1 H -4,6-methanobenzo[ d ]imidazole-2 -yl)benzylidene)-1 H -indene-1,3(2 H )-dione) 被合理设计用于在体外和体内追踪外源性和内源性产生的 HClO。BIDID本身具有极大的斯托克斯位移 (241 nm),并在 641 nm 处显示出明亮的红色发射。用 HClO 处理后,BIDID的 C C 键完全断裂,从而产生化合物BID (4-(5,5-二甲基-4,5,6,7-四氢-1 H -4,6-甲烷苯并[ d