Redox-sensitive inflammatory signaling pathways

Redox-sensitive inflammatory signaling pathways are integrated biochemical networks where the cellular reduction-oxidation (redox) status dictates the activity of inflammatory mediators. These pathways are primarily triggered by Reactive Oxygen Species (ROS) and Reactive Nitrogen Species (RNS), which act as secondary messengers to activate key transcription factors such as Nuclear Factor-kappa B (NF-κB), Activator Protein-1 (AP-1), and the NLRP3 inflammasome [Morgan & Liu, 2011; Abais et al., 2015]. Conversely, the Nuclear factor erythroid 2-related factor 2 (Nrf2) pathway serves as a critical antioxidant defense mechanism that suppresses inflammation by inducing the expression of cytoprotective enzymes [Ahmed et al., 2017]. Chronic activation of these pathways due to persistent oxidative stress is a fundamental driver of various pathologies, including atherosclerosis, type 2 diabetes, and neurodegenerative conditions like Alzheimer's disease [Hussain et al., 2016]. Pharmacological intervention strategies focus on restoring redox homeostasis through the use of Nrf2 activators, ROS scavengers, or inhibitors of redox-sensitive kinases like p38 MAPK [Son et al., 2011]. However, therapeutic development faces challenges in achieving specificity, as non-selective modulation can interfere with essential physiological processes that rely on ROS for normal cell signaling and host defense [Ristow, 2014].

Other names

Oxidative stress-mediated inflammatory pathwaysROS-dependent inflammatory signalingRedox-regulated inflammationRedox-sensitive signaling cascades

Modulation of intracellular redox state through the activation of antioxidant response elements (ARE) via Nrf2 or the inhibition of pro-inflammatory transcription factors like NF-kappa B and AP-1 [Hussain et al., 2016; Ahmed et al., 2017].