Reactive oxygen species and oxidative stress-related cellular targets (ROS/Oxidative stress targets)

Reactive oxygen species (ROS) and oxidative stress-related cellular targets comprise a broad and heterogeneous group of molecules responsible for the generation, regulation, and neutralization of highly reactive oxygen-containing radicals. This category includes ROS-producing enzymes like NADPH oxidases (NOX) and mitochondria-linked respiratory complexes, as well as antioxidant defense systems such as superoxide dismutase (SOD), catalase, and the glutathione system (Source: NIH/StatPearls, NBK554493). A central regulatory component is the transcription factor Nuclear factor erythroid 2-related factor 2 (Nrf2), which coordinates the cellular response to oxidative stress by inducing the expression of numerous cytoprotective genes (Source: UniProt, Q16236). While physiological levels of ROS are vital for intracellular signaling and immune defense, an imbalance—termed oxidative stress—leads to the damage of lipids, proteins, and DNA, contributing to the etiology of cancer, Alzheimer's disease, and atherosclerosis. Therapeutic interventions in this space focus on restoring redox balance through direct scavenging of radicals or the pharmacological activation of endogenous antioxidant pathways to mitigate tissue damage and disease progression (Source: PubMed, PMID: 25913100).

Other names

ROS-related targetsAntioxidant targetsRedox-sensitive targetsOxidative stress mediatorsRedox signaling components

Drugs targeting these systems typically act by directly scavenging free radicals, inhibiting ROS-generating enzymes such as NADPH oxidase (NOX) and xanthine oxidase, or activating endogenous antioxidant defense pathways, most notably the Nrf2-KEAP1-ARE signaling axis, to upregulate protective enzymes like superoxide dismutase and glutathione peroxidase (Source: NIH/StatPearls, PMID: 32119401).