NRF2 Pathway Activation as a Molecular Toxicology Mechanism in Oxidative Stress and Lipid Metabolic Disorders
Abstract
Lipid metabolic disorders, driven by oxidative stress, lipid peroxidation, and chronic inflammation, are key contributors to toxicological damage underlying Nonalcoholic fatty liver disease (NAFLD), atherosclerosis, and metabolic syndrome. The nuclear factor erythroid 2-related factor 2 (NRF2) pathway, a master regulator of antioxidant and detoxification responses, plays a critical role in mitigating cellular toxicity and maintaining lipid homeostasis. A multidisciplinary approach was applied to uncover the molecular toxicology of NRF2 in lipid metabolism. Transcriptomic meta-analysis of GEO datasets identified differentially expressed NRF2-regulated genes in lipid-associated chronic liver diseases (CLD). Clinical meta-analysis synthesized evidence on NRF2 activators and their effects on lipid-related toxic endpoints. Network pharmacology was used to map overlapping targets between NRF2 activation and lipid toxicity, while molecular docking assessed the binding potential of NRF2 activators with KEAP1, a negative regulator of NRF2. Transcriptomic analysis revealed widespread dysregulation of NRF2-dependent antioxidant genes such as GPX4, HMOX1, and NQO2, with 3178 DEGs significantly associated with oxidative stress, ferroptosis, and glutathione metabolism. Clinical meta-analysis demonstrated that NRF2 activators reduced toxic lipid parameters, including triglycerides (↓ 21.81%), LDL (↓ 18.36%), and total cholesterol (↓ 14.15%). Network pharmacology identified 985 overlapping…
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