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Adverse Effects of Nrf2 in Different Organs and the Related Diseases
Xuemei Jin1,2, Long Chen3, Yuelan Yang1,4
1Department of Clinical Nutrition, Guangzhou Institute of Disease-Oriented Nutritional Research, Guangzhou Red Cross Hospital of Jinan University, Guangzhou, China.
Abstract:
Significance: Under normal physiological conditions, Nrf2 undergoes ubiquitination and subsequent proteasome degradation to maintain its basal activity. Oxidative stress can trigger Nrf2 activation, prompting its translocation to the nucleus where it functions as a transcription factor, activating various antioxidant pathways, and conferring antioxidant properties. Recent Advances: While extensive research has shown Nrf2's protective role in various diseases, emerging evidence suggests that Nrf2 activation can also produce harmful effects. Critical Issues: This review examines the pathological contexts in which Nrf2 assumes different roles, emphasizing the mechanisms and conditions that result in adverse outcomes. Future Directions: Persistent Nrf2 activation may have deleterious consequences, necessitating further investigation into the specific conditions and mechanisms through which Nrf2 exerts its harmful effects. Antioxid. Redox Signal. 42, 973-985.
Insights
Nuclear factor erythroid 2-related factor 2 (Nrf2) normally protects cells from oxidative stress. However, persistent Nrf2 activation can paradoxically cause harm, requiring further study into its detrimental roles.
Area of Science:
- Cellular Biology
- Molecular Biology
- Biochemistry
Background:
- Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor regulating antioxidant response.
- Under basal conditions, Nrf2 is degraded, but oxidative stress promotes its nuclear translocation and activation.
- Nrf2 activation confers protective antioxidant properties, extensively documented in various disease models.
Purpose of the Study:
- To review the dual role of Nrf2 in pathological conditions.
- To highlight mechanisms and contexts where Nrf2 activation leads to adverse outcomes.
- To underscore the need for further research into the detrimental effects of persistent Nrf2 activation.
Main Methods:
- Literature review of studies investigating Nrf2's role in disease.
- Analysis of pathological contexts associated with Nrf2.
- Examination of molecular mechanisms underlying Nrf2's beneficial and harmful effects.
Main Results:
- Nrf2 activation is protective in many diseases.
- Emerging evidence indicates that sustained Nrf2 activation can be detrimental.
- Specific pathological conditions and molecular mechanisms mediate Nrf2's adverse effects.
Conclusions:
- The role of Nrf2 is context-dependent, exhibiting both protective and harmful functions.
- Persistent Nrf2 activation may lead to deleterious consequences.
- Further investigation is crucial to elucidate the specific conditions and mechanisms driving Nrf2's harmful actions.
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