Evidence map›Paper›PMID 26546695›Full record

ArticleFree radical biology & medicine2015

Phytoestrogens modulate hepcidin expression by Nrf2: Implications for dietary control of iron absorption.

Henry K Bayele, Sara Balesaria, Surjit K S Srai

Open access · hybridAbstract read
In one paragraph

Article in Free radical biology & medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
1.2field-weighted citation impact, top 21% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 47 citations in OpenAlex.

  1. Article
  2. Review
  3. Signaling pathways and targeted therapy for pulmonary hypertension.Signal transduction and targeted therapy · 2025
    Review
  4. Review
  5. Article
  6. Article
  7. Review
  8. Regulation of Host Defense Peptide Synthesis by Polyphenols.Antibiotics (Basel, Switzerland) · 2023
    Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Natural Antioxidants in Anemia Treatment.International journal of molecular sciences · 2021
    Review
  18. Article
  19. Therapeutic Advances in Regulating the Hepcidin/Ferroportin Axis.Pharmaceuticals (Basel, Switzerland) · 2019
    Review
  20. Role of Dietary Flavonoids in Iron Homeostasis.Pharmaceuticals (Basel, Switzerland) · 2019
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Henry K BayeleDepartment of Structural and Molecular Biology, Division of Biosciences, University College London, Gower Street, London WC1E 6BT United Kingdom. Electronic address: h.bayele@ucl.ac.uk.
Sara BalesariaDepartment of Structural and Molecular Biology, Division of Biosciences, University College London, Gower Street, London WC1E 6BT United Kingdom.
Surjit K S SraiDepartment of Structural and Molecular Biology, Division of Biosciences, University College London, Gower Street, London WC1E 6BT United Kingdom. Electronic address: k.srai@ucl.ac.uk.
University College London · GBInstitute of Structural and Molecular Biology · GB

Funding

Biotechnology and Biological Sciences Research Council BB/H003576/1
6 · The paper itself

Abstract

Hepcidin is a liver-derived antimicrobial peptide that regulates iron absorption and is also an integral part of the acute phase response. In a previous report, we found evidence that this peptide could also be induced by toxic heavy metals and xenobiotics, thus broadening its teleological role as a defensin. However it remained unclear how its sensing of disparate biotic and abiotic stressors might be integrated at the transcriptional level. We hypothesized that its function in cytoprotection may be regulated by NFE2-related factor 2 (Nrf2), the master transcriptional controller of cellular stress defenses. In this report, we show that hepcidin regulation is inextricably linked to the acute stress response through Nrf2 signaling. Nrf2 regulates hepcidin expression from a prototypical antioxidant response element in its promoter, and by synergizing with other basic leucine-zipper transcription factors. We also show that polyphenolic small molecules or phytoestrogens commonly found in fruits and vegetables including the red wine constituent resveratrol can induce hepcidin expression in vitro and post-prandially, with concomitant reductions in circulating iron levels and transferrin saturation by one such polyphenol quercetin. Furthermore, these molecules derepress hepcidin promoter activity when its transcription by Nrf2 is repressed by Keap1. Taken together, the data show that hepcidin is a prototypical antioxidant response or cytoprotective gene within the Nrf2 transcriptional circuitry. The ability of phytoestrogens to modulate hepcidin expression in vivo suggests a novel mechanism by which diet may impact iron homeostasis.

Indexed as

AnimalsAntioxidant Response ElementsBlotting, WesternChromatin ImmunoprecipitationElectrophoretic Mobility Shift AssayFlow CytometryGene Expression RegulationHepcidinsHumansIronMaleNF-E2-Related Factor 2PhytoestrogensRatsRats, Sprague-DawleyReal-Time Polymerase Chain ReactionHAMP protein, humanHepcidinsIronNFE2L2 protein, humanNF-E2-Related Factor 2PhytoestrogensRNA, MessengerAntioxidant response elementHepcidinIron overloadNrf2Oxidative stressPhytoestrogenPolyphenolRedox regulation

Identifiers

PMID26546695
PMCPMC4698393
OpenAlexW2190443009

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.