Cited by 211Iron Metabolism and DisordersErythropoietin and Anemia TreatmentHemoglobin structure and function

The IRP1-HIF-2α Axis Coordinates Iron and Oxygen Sensing with Erythropoiesis and Iron Absorption

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Anderson, Sheila A., Nizzi, Christopher P., Chang, Yuan-I., Deck, Kathryn M., Schmidt, Paul J., Galy, Bruno, Damnernsawad, Alisa, Broman, Aimee T. +5 more·2013·Cell Metabolism

Abstract

Red blood cell production is a finely tuned process that requires coordinated oxygen- and iron-dependent regulation of cell differentiation and iron metabolism. Here, we show that translational regulation of hypoxia-inducible factor 2α (HIF-2α) synthesis by iron regulatory protein 1 (IRP1) is critical for controlling erythrocyte number. IRP1-null (Irp1(-/-)) mice display a marked transient polycythemia. HIF-2α messenger RNA (mRNA) is derepressed in kidneys of Irp1(-/-) mice but not in kidneys of Irp2(-/-) mice, leading to increased renal erythropoietin (Epo) mRNA and inappropriately elevated serum Epo levels. Expression of the iron transport genes DCytb, Dmt1, and ferroportin, as well as other HIF-2α targets, is enhanced in Irp1(-/-) duodenum. Analysis of mRNA translation state in the liver revealed IRP1-dependent dysregulation of HIF-2α mRNA translation, whereas IRP2 deficiency derepressed translation of all other known 5' iron response element (IRE)-containing mRNAs expressed in the liver. These results uncover separable physiological roles of each IRP and identify IRP1 as a therapeutic target for manipulating HIF-2α action in hematologic, oncologic, and other disorders.

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Crossref · 10.1016/j.cmet.2013.01.007

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  • When the mechanism fails, as in Irp1-knockout mice, a transient polycythemia occurs in the relatively iron-deficient young animals, which reverts in adult mice with iron sufficiency.

    “When the mechanism fails, as in Irp1-knockout mice, a transient polycythemia occurs in the relatively iron-deficient young animals, which reverts in adult mice with iron sufficiency.64,65”

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Authors
Anderson, S. A., Nizzi, C. P., Chang, Y.-I., Deck, K. M., Schmidt, P. J., Galy, B., Damnernsawad, A., Broman, A. T., Kendziorski, C., Hentze, M. W., Fleming, M. D., Zhang, J., & Eisenstein, R. S.
Affiliations
  • University of Wisconsin–Madison (US)
  • Boston Children's Hospital (US)
  • European Molecular Biology Laboratory (DE)
Corresponding author
  • Zhang, Jing
  • Eisenstein, Richard S.
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2013-02
Volume
17
Issue
2
Pages
282-290
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2042212143
Cited by
211
References
9
Citations by year
2026: 13 · 2025: 8 · 2024: 13 · 2023: 14 · 2022: 11 · 2021: 17 · 2020: 19 · 2019: 19 · 2018: 18 · 2017: 14 · 2016: 10 · 2015: 23 · 2014: 23 · 2013: 9
FWCI
14.09
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • V Foundation for Cancer Research
  • University of Wisconsin-Madison (R01CA152108, WIS01324)
  • Greater Milwaukee Foundation
  • National Institutes of Health (R01 DK66600)
  • National Center for Research Resources (1UL1RR025011)
  • National Cancer Institute (P30 CA014520)
Topics
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Health Sciences › Medicine › Hematology › Erythropoietin and Anemia Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
Keywords
iron regulatory protein 1, HIF-2α, IRP2, erythropoiesis, iron absorption, iron metabolism, oxygen sensing, erythropoietin, polycythemia, iron-responsive element, translational regulation, ferroportin, DMT1, Dcytb, kidney, duodenum, liver
MeSH terms
Absorption, Endothelial PAS Domain-Containing Protein 1, Animals, Duodenum, Erythropoiesis, Erythropoietin, Gene Expression Regulation, Hematopoiesis, Extramedullary, Iron, Oxygen, Polycythemia, RNA, Messenger, Spleen, Protein Biosynthesis, Signal Transduction, Erythroid Precursor Cells, Iron Regulatory Protein 1, Erythroid Cells, Mice, Basic Helix-Loop-Helix Proteins

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