Cited by 38Iron Metabolism and DisordersTrace Elements in HealthNeurological diseases and metabolism

Fetal liver hepcidin secures iron stores in utero

Open access
Kämmerer, Lara, Mohammad, Goran, Wolna, Magda, Robbins, Peter A., Lakhal-Littleton, Samira·2020·Blood

Published version of a preprint

Abstract

In the adult, the liver-derived hormone hepcidin (HAMP) controls systemic iron levels by blocking the iron-exporting protein ferroportin (FPN) in the gut and spleen, the sites of iron absorption and recycling, respectively. Impaired HAMP expression or FPN responsiveness to HAMP result in iron overload. HAMP is also expressed in the fetal liver but its role in controlling fetal iron stores is not understood. To address this question in a manner that safeguards against the confounding effects of altered maternal iron homeostasis, we generated fetuses harboring a paternally-inherited ubiquitous knock-in of the HAMP-resistant fpnC326Y. Additionally, to safeguard against any confounding effects of altered placental iron homeostasis, we generated fetuses with a liver-specific knock-in of fpnC326Y or knockout of the hamp gene. These fetuses had reduced liver iron stores and hemoglobin, and markedly increased FPN in the liver, but not in the placenta. Thus, fetal liver HAMP operates cell-autonomously to increase fetal liver iron stores. Our findings also suggest that FPN in the placenta is not actively regulated by fetal liver HAMP under normal physiological conditions.

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Crossref · 10.1182/blood.2019003907

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40 of 40 references verified0 citation errors · 0 not checkable

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  • Iron retained in the fetal liver by fetal hepcidin is used for fetal erythropoiesis until erythropoiesis transitions to the marrow, close to birth.

    “where it is used for fetal erythropoiesis until erythropoiesis transitions to the marrow, close to birth.”
  • Fetal hepatic production of hepcidin may be sufficient to act on fetal hepatic ferroportin in an autocrine/paracrine manner to retain iron in the fetal liver.

    “However, fetal hepatic production of hepcidin may be sufficient to act on fetal hepatic ferroportin in an autocrine/paracrine manner to retain iron in the fetal liver [51]”

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Authors
Kämmerer, L., Mohammad, G., Wolna, M., Robbins, P. A., & Lakhal-Littleton, S.
Affiliations
  • University of Oxford (GB)
  • Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
Venue
Blood
Published
2020-09-24
Volume
136
Issue
13
Pages
1549-1557
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W3031036471
Cited by
38
References
41
Citations by year
2026: 4 · 2025: 5 · 2024: 5 · 2023: 4 · 2022: 9 · 2021: 9 · 2020: 2
FWCI
3.79
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • British Heart Foundation (FS/12/63/29895)
  • Medical Research Council (MR/L010054/1)
Topics
  • Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Life Sciences › Neuroscience › Neurology › Neurological diseases and metabolism
Keywords
hepcidin, fetal liver, iron stores, ferroportin, iron homeostasis, hemoglobin
MeSH terms
Ferroportin, Animals, Female, Hemoglobins, Iron, Liver, Male, Pregnancy, Cation Transport Proteins, Mice, Hepcidins

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