Oxidative stress signaling mediators

Oxidative stress signaling mediators represent a broad class of molecules, including reactive oxygen species (ROS), antioxidant enzymes, and redox-sensitive transcription factors, that collectively maintain cellular redox homeostasis. Key components such as the Nrf2-Keap1 pathway and NF-kappaB serve as sensors that detect oxidative imbalances and initiate gene expression programs to mitigate damage (Sies & Jones, 2020, Nature Reviews Molecular Cell Biology). In pathological states like cancer, neurodegeneration, and cardiovascular disease, these mediators often become dysregulated, leading to chronic oxidative stress and tissue injury (Forman & Zhang, 2021, Nature Reviews Drug Discovery). Pharmacological strategies targeting these mediators include the use of direct antioxidants to scavenge ROS or Nrf2 activators to bolster endogenous defense mechanisms (Hayes & Dinkova-Kostova, 2014, Trends in Biochemical Sciences). However, the dual role of ROS as both damaging agents and essential signaling molecules for cell growth and immunity creates a therapeutic challenge known as the antioxidant paradox (Halliwell, 2011, Free Radical Research). Consequently, drug development in this area requires precise modulation to avoid disrupting necessary physiological signaling while effectively reducing pathological oxidative stress.

Other names

Redox signaling moleculesOxidative stress pathway componentsReactive oxygen species signaling mediatorsAntioxidant response elements signaling components

Activation of antioxidant response elements (ARE) via Nrf2, inhibition of NF-kappaB signaling, and direct scavenging of reactive oxygen species.