Antioxidant response element (ARE)

The antioxidant response element (ARE) is a short cis-regulatory sequence located within promoter regions of many genes encoding phase II detoxifying enzymes and antioxidant proteins. It serves as a binding site for specific transcription factors—most notably nuclear factor erythroid 2-related factor 2 (NRF2)—which upon activation bind these elements and induce expression of cytoprotective genes involved in cellular defense against oxidative stress and xenobiotic damage[1][3]. The core consensus motif has been defined as RTGACnnnGC; functional variants exist across different species and gene promoters[1]. While essential for orchestrating adaptive responses to oxidative insults through upregulation of glutathione synthesis enzymes, NAD(P)H quinone oxidoreductase, heme oxygenase‑1 among others,[4] the ARE itself is not considered a conventional therapeutic target but rather an important regulatory node within broader redox biology networks.

Other names

AREElectrophile response element (EpRE)Stress response element (StRE)

Drugs targeting this system typically work by: 1. Disrupting KEAP1-NRF2 interaction → allowing NRF2 stabilization. 2. Promoting nuclear translocation of NRF2. 3. Enhancing binding of NRF2 to ARE sequences → increased transcription of antioxidant/detoxifying genes. These mechanisms do not involve direct interaction with the DNA sequence itself, but rather modulation at the level of upstream signaling or protein-protein interactions.