Redox-sensitive cellular pathways

Redox-sensitive cellular pathways refer to a complex network of signaling cascades that are modulated by the cellular reduction-oxidation (redox) state, often involving reactive oxygen species (ROS) as secondary messengers. These pathways, such as the Nrf2-Keap1, NF-κB, and MAPK systems, are essential for maintaining cellular homeostasis and responding to environmental or metabolic stressors (PubMed: 22126477). In healthy cells, they regulate gene expression related to detoxification, antioxidant defense, and cell survival. However, chronic dysregulation of redox signaling is implicated in the pathogenesis of various diseases, including cancer, where it can drive proliferation and chemoresistance, and neurodegenerative disorders like Parkinson's and Alzheimer's, where oxidative damage is a primary driver of pathology (PubMed: 23624153). Therapeutic strategies targeting these pathways often involve small molecules that either activate antioxidant responses or inhibit pro-oxidant enzymes, such as the Nrf2 activator dimethyl fumarate (PubChem CID: 637568). Despite their therapeutic potential, the broad nature of these pathways and their involvement in essential physiological processes pose significant challenges for achieving molecular specificity and avoiding off-target toxicity (PubMed: 28844922).

Other names

Redox signaling pathwaysOxidative stress-responsive pathwaysROS-mediated signaling cascades

Modulation of cellular redox potential and activation of antioxidant defense mechanisms through transcription factor regulation (e.g., Nrf2) or direct scavenging of reactive species.