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Published on: June 9, 2017
Mazes of Nrf2 Regulation.
N K Zenkov1, P M Kozhin, A V Chechushkov
1Research Institute of Experimental and Clinical Medicine, Novosibirsk, 630117, Russia. lemen@centercem.ru.
The Nrf2 transcription factor regulates cellular redox balance but is typically degraded. Autophagy and epigenetic changes can activate Nrf2, potentially increasing resistance to cancer therapies.
Area of Science:
- Molecular Biology
- Cellular Biology
- Biochemistry
Background:
- The Nrf2 transcription factor is crucial for cellular redox balance and combating oxidative stress.
- Nrf2 activity is tightly regulated by ubiquitination, degradation, and post-translational modifications, keeping its activity low under normal conditions.
- Dysregulation of Nrf2 is implicated in various oxidative stress-associated diseases.
Purpose of the Study:
- To review the intricate mechanisms governing the transcriptional activity of Nrf2.
- To elucidate the key molecular elements involved in Nrf2 regulation.
- To explore pharmacological strategies for modulating the Keap1/Nrf2/ARE pathway.
Main Methods:
- Literature review of existing research on Nrf2 regulation.
- Analysis of molecular mechanisms controlling Nrf2 stability and nuclear translocation.
- Examination of epigenetic and autophagic pathways influencing Nrf2.
- Survey of pharmacological agents targeting the Keap1/Nrf2/ARE system.
Main Results:
- Nrf2's transcriptional activity is primarily suppressed by rapid degradation via the 26S proteasome.
- Post-translational modifications and cellular compartmentalization significantly impact Nrf2 function.
- Autophagy and epigenetic modifications represent key mechanisms for sustained Nrf2 activation.
- Activated Nrf2 signaling may contribute to tumor cell resistance to chemotherapy and radiotherapy.
Conclusions:
- Understanding Nrf2 regulatory mechanisms is vital for developing therapeutic strategies against oxidative stress-related diseases.
- Targeting the Keap1/Nrf2/ARE pathway offers a promising avenue for pharmacological intervention.
- Further research into Nrf2 regulation by autophagy and epigenetics could reveal novel therapeutic targets.
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