Reactive oxygen species-generating enzymes (ROS-generating enzymes)

Reactive oxygen species (ROS)-generating enzymes are a diverse class of proteins, including the NADPH oxidase (NOX) family, xanthine oxidase (XO), and myeloperoxidase (MPO), that catalyze the formation of reactive oxygen species such as superoxide and hydrogen peroxide (Bedard & Krause, 2007, Physiol Rev). While these enzymes are vital for normal physiological processes like cell signaling and host defense against pathogens, their chronic overactivation leads to oxidative stress, a key driver in the pathogenesis of cardiovascular, metabolic, and neurodegenerative diseases (Sies et al., 2017, Nat Rev Mol Cell Biol). Pharmacological intervention typically involves small-molecule inhibitors designed to reduce ROS production; for instance, xanthine oxidase inhibitors like allopurinol are used for gout, while NOX inhibitors like setanaxib are being investigated for fibrotic diseases (Pacher et al., 2006, Pharmacol Rev). A major challenge in targeting these enzymes is achieving sufficient selectivity to avoid disrupting essential redox-dependent signaling pathways or compromising the immune system. This entry is marked as incorrect because it represents a broad functional category of enzymes rather than a single specific molecular target.

Other names

Pro-oxidant enzymesROS-producing enzymesOxidative enzymesRedox-active enzymes

Inhibition of specific enzymatic pathways (such as the NADPH oxidase complex or xanthine oxidase) to decrease the production of reactive oxygen species like superoxide and hydrogen peroxide, thereby reducing oxidative stress and downstream tissue damage.