What does DCFDA measure?
DCFDA / H2DCFDA / DCFH-DA / DCFH is a fluorogenic dye that measures hydroxyl, peroxyl and other reactive oxygen species (ROS) activity within the cell. It is then deacetylated by cellular esterases to a non-fluorescent compound, which is later oxidized by ROS into 2′, 7′ –dichlorofluorescein (DCF).
What is DCF fluorescence?
DCF is often used as a fluorescent indicator of ROS formation in both simple biochemical antioxidant assays and in cell culture based antioxidant assays. DCF can be oxidized by peroxynitrite, hydroxyl radicals, and peroxidase to generate a highly fluorescent end product.
How do you test for mitochondrial ROS?
Investigators have used redox-active probes that, upon oxidation by ROS, yield products exhibiting fluorescence, chemiluminescence, or bioluminescence. Mitochondria-targeted probes can be used to detect ROS generated in mitochondria.
How does CM H2DCFDA work?
CM-H2DCFDA passively diffuses into cells, where its acetate groups are cleaved by intracellular esterases and its thiol-reactive chloromethyl group reacts with intracellular glutathione and other thiols.
How do you make Dichlorofluorescein?
Combine 166 mg of phthalic anhydride, 220mg of resorcinol and 3 drops of concentrated sulfuric acid. Heat to 200 degrees celsius for 5 minutes. The crude fluorescein produced is dissolved in dilute sodium hydroxide solution (300mg in 10mL of water).
How does Dichlorofluorescein work?
It is used as an indicator for argentometry by Fajans method. When used as an indicator, upon reaching the equivalence point of a titration reaction the color shifts from colorless towards a faint pink.
What is a DCF assay?
A fluorometric microplate assay for the detection of oxidative stress by detecting oxidation of 2′,7′-dichlorofluorescin-diacetate (DCF-DA) into the highly fluorescent compound 2′,7′ dichlorofluorescein (DCF) due to the presence of reactive oxygen species (ROS) (Figure 1).
What is ROS generation?
ROS are generated by multiple cellular processes and can be overproduced in response to different stimuli. Normal cells can maintain oxidative homeostasis owing to the activity of various antioxidant systems which control ROS production through changes in metabolic and signaling pathways.
How do you measure ROS levels?
In cultured cells, an increase in cellular levels of reactive oxygen species (ROS) can be detected using multiple techniques including colorimetric assays, immunoblotting, and immunofluorescence.
What is ROS production?
Reactive oxygen species (ROS) are by-products of normal cell activity. They are produced in many cellular compartments and play a major role in signaling pathways.
What is 2’7 Dichlorofluorescin diacetate?
2′,7′-Dichlorofluorescin diacetate is a cell-permeable non-fluorescent probe. 2′,7′-Dichlorofluorescin diacetate is de-esterified intracellularly and turns to highly fluorescent 2′,7′-dichlorofluorescein upon oxidation.
How is DCFH-da converted to 2′-7’dichlorofluorescein?
After cell uptake, DCFH-DA is deacetylated by cellular esterases to a non-fluorescent compound, which is later oxidized by ROS into 2’-7’dichlorofluorescein (DCF).
How should product d6883 (Dichlorofluorescin diacetate) be dissolved?
How should Product D6883, 2´,7´-Dichlorofluorescin diacetate, be dissolved? 2´,7´-Dichlorofluorescin diacetate is soluble in organic solvents such as DMSO, ethanol, and DMF at 25 mg/mL. We test the solubility at 10 mg/ml in methanol.
Is Dichlorofluorescin diacetate soluble in methanol?
2´,7´-Dichlorofluorescin diacetate is soluble in organic solvents such as DMSO, ethanol, and DMF at 25 mg/mL. We test the solubility at 10 mg/ml in methanol.