Reactive oxygen species-related pathway proteins (ROS pathway proteins)

Reactive oxygen species (ROS)-related pathway proteins represent a broad functional class of molecules involved in the production, regulation, and detoxification of oxygen-derived free radicals and non-radicals (Source: PubMed: 30391564). This group includes enzymatic sources of ROS such as NADPH oxidases (NOX) and xanthine oxidase, as well as antioxidant defense systems comprising superoxide dismutase (SOD), catalase, and glutathione peroxidase (Source: UniProt: P00441, P04040). Additionally, it encompasses redox-sensitive transcription factors like Nrf2, which orchestrates the cellular antioxidant response (Source: NIH: PMC4310836). Under normal physiological conditions, these proteins maintain a delicate redox balance essential for cell signaling, differentiation, and immune function. However, an imbalance resulting in excessive ROS—known as oxidative stress—is a key driver in the progression of cancer, neurodegenerative diseases like Alzheimer's, and cardiovascular disorders (Source: PubMed: 28129551). Pharmacological strategies targeting this pathway include ROS scavengers, Nrf2 activators, and NOX inhibitors. Therapeutic success is often limited by the dual role of ROS in both damage and essential signaling (Source: StatPearls: NBK545213). Consequently, these proteins are central to drug discovery efforts aimed at mitigating oxidative damage while preserving vital cellular functions.

Other names

Oxidative stress-related proteinsAntioxidant system proteinsRedox-regulating proteinsROS-generating enzymes

Drugs targeting this pathway function by directly scavenging reactive species, inducing the expression of endogenous antioxidant enzymes through the Nrf2/ARE pathway, or inhibiting ROS-producing enzymes like NADPH oxidase (Source: PubMed: 28129551, StatPearls: NBK545213).