Measurement of Reactive Oxygen and Nitrogen Species in Living Cells Using the Probe 2',7'-Dichlorodihydrofluorescein
2021
Waleska Dornas | Detlef Schuppan
Reactive oxygen species and reactive nitrogen species (RONS) are involved in programmed cell death in the context of numerous degenerative and chronic diseases. In particular, the ability of cells to maintain redox homeostasis is necessary for an adaptive cellular response to adverse conditions that can cause damage to proteins and DNA, resulting in apoptosis and genetic mutations. Here, we focus on the 2',7'-dichlorodihydrofluorescein diacetate (DCFH2-DA) assay to detect RONS. Although this fluorescence-based assay is widely utilized due to its high sensitivity to detect changes in cellular redox status that allow measuring alterations in RONS over time, its validity has been a matter of controversy. If correctly carried out, its limitations are understood and results are correctly interpreted, the DCFH2-DA assay is a valuable tool for cell-based studies.
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