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Role of Nrf2 in protection against acute kidney injury
Luke M Shelton1, B Kevin Park, Ian M Copple
1MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.
Abstract:
Multifaceted cell defense pathways perform a critical role in the maintenance of homeostasis at the cellular, tissue, and organism levels. The Keap1-Nrf2 pathway is one of the most important of these cytoprotective pathways, with Nrf2 serving as a master transcriptional regulator of the basal and inducible expression of a multitude of genes encoding detoxification enzymes, antioxidant proteins, xenobiotic transporters, and other stress-response mediators. An increasing body of evidence supports a vital physiological role for Nrf2 in protection of the kidney against a number of diseases, and the pharmacological induction of Nrf2 by bardoxolone methyl (methyl-2-cyano 3,12-dioxooleano-1,9-dien-28-oate, CDDO-Me) has shown promise for the management of such pathologies. Acute kidney injury, induced by drugs and other stimuli, is a significant clinical problem, and accounts for the cessation of development of many promising drug candidates. A better understanding of the molecular mechanisms that underlie acute kidney injury, and the biological facets that determine the balance between renal adaptation and dysfunction, is therefore vital to reducing clinical burden and patient suffering. The focus of this review is to highlight recent work that has demonstrated an ability of Nrf2 to determine the sensitivity of the kidney to acute injury invoked by environmental insults such as heavy metals and ischemia, as well as xenobiotics such as cyclosporin A and cisplatin.
Insights
The Keap1-Nrf2 pathway protects kidneys from injury. Pharmacological activation of Nrf2, a key regulator, shows promise in managing kidney diseases and acute kidney injury.
Area of Science:
- Cellular Biology
- Molecular Medicine
- Toxicology
Background:
- Cellular defense pathways are crucial for maintaining homeostasis.
- The Keap1-Nrf2 pathway regulates cytoprotective genes, including detoxification and antioxidant proteins.
- Nrf2 plays a vital role in kidney protection against various diseases.
Purpose of the Study:
- To review recent findings on the role of Nrf2 in kidney sensitivity to acute injury.
- To highlight the impact of environmental insults and xenobiotics on kidney injury.
- To explore the therapeutic potential of Nrf2 activation in kidney pathologies.
Main Methods:
- Review of existing literature on the Keap1-Nrf2 pathway and kidney injury.
- Analysis of studies investigating Nrf2's role in response to specific insults (heavy metals, ischemia, cyclosporin A, cisplatin).
- Examination of bardoxolone methyl (CDDO-Me) as a pharmacological Nrf2 inducer.
Main Results:
- Nrf2 activation influences kidney sensitivity to acute injury from diverse insults.
- Bardoxolone methyl (CDDO-Me) demonstrates potential in managing kidney diseases by modulating Nrf2.
- Understanding Nrf2's role is key to developing strategies against acute kidney injury.
Conclusions:
- Nrf2 is a critical determinant of renal adaptation versus dysfunction in response to acute injury.
- Targeting the Keap1-Nrf2 pathway offers a promising therapeutic strategy for preventing and treating acute kidney injury.
- Further research into Nrf2 modulation is vital for reducing the clinical burden of kidney diseases.
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