Cited by 638Iron Metabolism and DisordersFerroptosis and cancer prognosisNeurological diseases and metabolism

Ironing out Ferroportin

Open access
Drakesmith, Hal, Nemeth, Elizabeta, Ganz, Tomas·2015·Cell Metabolism

Abstract

Maintaining physiologic iron concentrations in tissues is critical for metabolism and host defense. Iron absorption in the duodenum, recycling of iron from senescent erythrocytes, and iron mobilization from storage in macrophages and hepatocytes constitute the major iron flows into plasma for distribution to tissues, predominantly for erythropoiesis. All iron transfer to plasma occurs through the iron exporter ferroportin. The concentration of functional membrane-associated ferroportin is controlled by its ligand, the iron-regulatory hormone hepcidin, and fine-tuned by regulatory mechanisms serving iron homeostasis, oxygen utilization, host defense, and erythropoiesis. Fundamental questions about the structure and biology of ferroportin remain to be answered.

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Registry

Crossref · 10.1016/j.cmet.2015.09.006

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109 of 109 references verified0 citation errors · 0 not checkable

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  • Aberrant ferroportin activity can lead to diseases of iron overload, like hemochromatosis, or iron limitation anemias.

    “Aberrant ferroportin activity can lead to diseases of iron overload, like hemochromatosis, or iron limitation anemias 2 .”

    From Structure of hepcidin-bound ferroportin reveals iron homeostatic mechanisms (2020) · cites this paper as [2]

    The section on genetic disorders of ferroportin reports that gain-of-function mutations cause iron overload resembling classical hemochromatosis. It also reports iron restriction and hypochromic erythrocytes in a mouse model with a ferroportin mutation, but does not establish iron-limitation anemia as a disease caused by aberrant ferroportin activity; it says patients with loss-of-function mutations generally avoid systemic iron deficiency unless phlebotomized. Page numbers are unavailable in our copy. (LLM, conf=0.83)

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  • In mammals, iron levels are regulated by hepcidin acting on ferroportin, the only known iron efflux transporter.

    “In mammals, iron levels are regulated by the action of hepcidin, a peptide hormone, on ferroportin (FPN), the only known iron efflux transporter 2-4 (Fig. 1a).”
  • The cryo-EM density map of FPN enabled building of an atomic model of FPN regions important for iron transport and hepcidin binding and a portion of ICL3 important in hepcidin-induced FPN internalization.

    “The cryo-EM density map of FPN enabled building of an atomic model of FPN regions important for iron transport and hepcidin binding 2,7 , and a portion of the intracellular loop 3 (ICL3) important in hepcidin-induced FPN internalization 8-10 (Extended Data Fig. 5).”
  • FPN abundance is controlled at transcriptional, posttranscriptional, and posttranslational stages.

    “The expression of FPN is tightly regulated at the transcriptional, posttranscriptional, and posttranslational levels.8”
  • In duodenal enterocytes, Fpn transcription is regulated by iron and hypoxia to increase dietary iron absorption during iron deficiency and anemia.

    “In duodenal enterocytes, transcription of the Fpn gene, which encodes ferroportin, is regulated by iron and hypoxia to increase the absorption of dietary iron during iron deficiency and anemia.8,54”

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2 retracted

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1 of the 110 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. Altamura S Galy B Kessler R Hentze MW Muckenthaler MU 2011 Mouse models for ferroportin with impaired hepcidin regulation American Journal of Hematology 86 E42
  2. Preza GC Ruchala P Pinon R Ramos E Qiao B Peralta MA Sharma S Waring A Ganz T Nemeth E 2011b Minihepcidins are rationally designed small peptides that mimic hepcidin activity in mice and may be useful for the treatment of iron overload J Clin Invest 121 4880 4888 22045566 PMC3225996

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Authors
Drakesmith, H., Nemeth, E., & Ganz, T.
Affiliations
  • University of Oxford (GB)
  • University of California, Los Angeles (US)
Corresponding author
Ganz, Tomas
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2015-11
Volume
22
Issue
5
Pages
777-787
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2174098335
Cited by
638
References
110
Citations by year
2026: 35 · 2025: 64 · 2024: 68 · 2023: 76 · 2022: 75 · 2021: 67 · 2020: 86 · 2019: 52 · 2018: 54 · 2017: 33 · 2016: 24 · 2015: 1 · 2012: 1
FWCI
5.59
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01DK065029, R01DK090554, R01DK107309)
Topics
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Ferroptosis and cancer prognosis
  • Life Sciences › Neuroscience › Neurology › Neurological diseases and metabolism
Keywords
ferroportin, hepcidin, iron homeostasis, iron absorption, erythropoiesis, iron recycling, iron storage, iron export, membrane protein structure, host defense, oxygen utilization
MeSH terms
Ferroportin, Animals, Erythrocytes, Erythropoiesis, Homeostasis, Humans, Iron, Macrophages, Hepatocytes, Cation Transport Proteins, Hepcidins

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