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The Complex Genetic and Epigenetic Regulation of the Nrf2 Pathways: A Review
Joe M McCord1,2, Bifeng Gao1,2, Brooks M Hybertson1,2
1Pathways Bioscience, Aurora, CO 80045, USA.
Antioxidants (Basel, Switzerland)
|February 25, 2023
Summary
Nuclear factor erythroid 2-related factor 2 (Nrf2) controls over 2000 genes, impacting redox balance and metabolism. Its complex regulation involves over 45 control points, explaining benefits of phytochemicals targeting multiple pathways.
Area of Science:
- Molecular Biology
- Cellular Signaling
- Gene Regulation
Background:
- Nuclear factor erythroid 2-related factor 2 (Nrf2) is a key transcription factor regulating over 2000 genes.
- Nrf2's functions extend beyond redox balance to include metabolic pathway regulation.
- The intricate regulatory network of Nrf2 has been extensively studied over the past 25 years.
Purpose of the Study:
- To review the complex regulatory mechanisms governing Nrf2 activity.
- To elucidate the 'stop-and-go' signals controlling Nrf2 gene expression and promoter specificity.
- To highlight the implications of Nrf2 pathway complexity for therapeutic strategies.
Main Methods:
- Literature review of Nrf2 pathway components and regulatory factors.
- Analysis of identified control points influencing Nrf2 activation, translocation, and deactivation.
- Synthesis of information on structural modifications affecting Nrf2 function.
Main Results:
- Over 45 control points regulating Nrf2 have been identified.
- Nrf2 regulation involves complex sequences affecting gene expression intensity and promoter specificity.
- Structural modifications of Nrf2 influence its journey to DNA and gene expression profile.
Conclusions:
- The Nrf2 pathway exhibits remarkable complexity with numerous regulatory checkpoints.
- Understanding these control points explains the efficacy of phytochemicals targeting multiple sites.
- This contrasts with traditional single-target pharmaceutical approaches, suggesting advantages for multi-targeted therapies.
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