Cited by 77Genomics, phytochemicals, and oxidative stressRedox biology and oxidative stressGlutathione Transferases and Polymorphisms

Beyond antioxidant genes in the ancient Nrf2 regulatory network

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Lacher, Sarah E., Lee, Joslynn S., Wang, Xuting, Campbell, Michelle R., Bell, Douglas A., Slattery, Matthew·2015·Free Radical Biology and Medicine

Abstract

Nrf2, a basic leucine zipper transcription factor encoded by the gene NFE2L2, is a master regulator of the transcriptional response to oxidative stress. Nrf2 is structurally and functionally conserved from insects to humans, and it heterodimerizes with the small MAF transcription factors to bind a consensus DNA sequence (the antioxidant response element, or ARE) and regulate gene expression. We have used genome-wide chromatin immunoprecipitation and gene expression data to identify direct Nrf2 target genes in Drosophila and humans. These data have allowed us to construct the deeply conserved ancient Nrf2 regulatory network-target genes that are conserved from Drosophila to human. The ancient network consists of canonical antioxidant genes, as well as genes related to proteasomal pathways and metabolism and a number of less expected genes. We have also used enhancer reporter assays and electrophoretic mobility-shift assays to confirm Nrf2-mediated regulation of ARE activity at a number of these novel target genes. Interestingly, the ancient network also highlights a prominent negative feedback loop; this, combined with the finding that Nrf2-mediated regulatory output is tightly linked to the quality of the ARE it is targeting, suggests that precise regulation of nuclear Nrf2 concentration is necessary to achieve proper quantitative regulation of distinct gene sets. Together, these findings highlight the importance of balance in the Nrf2-ARE pathway and indicate that Nrf2-mediated regulation of xenobiotic metabolism, glucose metabolism, and proteostasis has been central to this pathway since its inception.

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Crossref · 10.1016/j.freeradbiomed.2015.06.044

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Authors
Lacher, S. E., Lee, J. S., Wang, X., Campbell, M. R., Bell, D. A., & Slattery, M.
Affiliations
  • University of Minnesota (US)
  • National Institutes of Health (US)
Corresponding author
Slattery, Matthew
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2015-11
Volume
88
Issue
Pt B
Pages
452-465
ISSN
0891-5849 (ISSN-L)
OpenAlex
W829805959
Cited by
77
References
76
Citations by year
2026: 6 · 2025: 4 · 2024: 4 · 2023: 5 · 2022: 7 · 2021: 8 · 2020: 7 · 2019: 7 · 2018: 12 · 2017: 10 · 2016: 7
FWCI
4.20
Type
journal article
Language
en
Open access
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • University of Minnesota Foundation
  • Intramural Research Program of the National Institute of Environmental Health Sciences
  • National Institutes of Health (Z01-ES-100475, ES065079)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics, phytochemicals, and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glutathione Transferases and Polymorphisms
Keywords
Nrf2, antioxidant response element, oxidative stress response, Nrf2 target genes, Maf transcription factors, Drosophila, negative feedback loop, xenobiotic metabolism, glucose metabolism, proteostasis, enhancer regulation
MeSH terms
Animals, Antioxidants, Base Sequence, Drosophila, Gene Expression Regulation, Humans, Molecular Sequence Data, Phylogeny, Repressor Proteins, Electrophoretic Mobility Shift Assay, Drosophila Proteins, Chromatin Immunoprecipitation, NF-E2-Related Factor 2, Transcriptome, Antioxidant Response Elements

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