MitoSOX Red 是一种具有特异性和细胞膜渗透性且靶向活细胞线粒体的新型荧光探针。MitoSOX Red 进入线粒体后会被超氧化物氧化,而不会被其他 ROS 或 RNS 生成系统氧化。MitoSOX Red 随后与线粒体内核酸结合,产生强红色荧光。MitoSOX Red 可以作为荧光指示剂,特异性检测超氧化物。超氧化物歧化酶 (Superoxide dismutase,SOD) 能够预防 MitoSOX Red 氧化。
5(6)-Carboxy-2’,7’-dichlorofluorescein diacetate is an oxidant-sensitive and cell-permeable fluorescent probe.1Base hydrolysis of the ester bonds by intracellular esterases releases the acetate groups and the resulting compound, 5(6)-carboxy-2’,7’,-dichlorofluorescein, is oxidized by reactive oxygen species (ROS) and nitric oxide (NO) and displays excitation/emission maxima of 504 and 530 nm, respectively, which can be quantified as a measure of oxidant production.
1.Hempel, S.L., Buettner, G.R., O’Malley, Y.Q., et al.Dihydrofluorescein diacetate is superior for detecting intracellular oxidants: Comparison with 2’,7’-dichlorodihydrofluorescein diacetate, 5(and 6)-carboxy-2’,7’-dichlorodihydrofluorescein diacetate, and dihydrorhodamine 123Free Radic. Biol. Med.27(1-2)146-159(1999)