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Updated: May 2, 2026
Measurement of Heme Synthesis Levels in Mammalian Cells
Published on: July 9, 2015
Molecular basis of HFE-hemochromatosis
1Institute of General Zoology and Endocrinology, University of Ulm Ulm, Germany.
Insights
Hereditary hemochromatosis (HH) involves iron overload due to HFE gene mutations, causing hepcidin deficiency and organ damage. This review explores HFE/Hfe-HH molecular mechanisms and treatment strategies.
Area of Science:
- Genetics
- Hepatology
- Molecular Biology
Background:
- Hereditary hemochromatosis (HH) is a genetic iron overload disorder.
- Mutations in the HFE gene are the most common cause of HH in Caucasians.
- HFE/Hfe-HH is characterized by liver disease and inadequate hepcidin production.
Purpose of the Study:
- To review the molecular actions of HFE/Hfe and hepcidin in iron homeostasis.
- To discuss current approaches to managing iron overload in HFE/Hfe-HH.
- To explore novel roles of extra-hepatocytic Hfe in HH pathologies.
Main Methods:
- Literature review of molecular mechanisms.
- Analysis of studies on hepcidin regulation.
- Discussion of therapeutic strategies for iron overload.
Main Results:
- Inadequate hepcidin expression leads to excessive dietary iron absorption.
- Iron deposition in tissues causes multi-organ damage.
- Extra-hepatocytic functions of Hfe may be relevant to HH.
Conclusions:
- HFE/Hfe and hepcidin are critical for systemic iron homeostasis.
- Understanding HFE/Hfe's diverse roles is crucial for HH treatment.
- Further research into extra-hepatic Hfe functions is warranted.
Abstract:
Iron-overload disorders owing to genetic misregulation of iron acquisition are referred to as hereditary hemochromatosis (HH). The most prevalent genetic iron overload disorder in Caucasians is caused by mutations in the HFE gene, an atypical MHC class I molecule. Recent studies classified HFE/Hfe-HH as a liver disease with the primarily failure in the production of the liver iron hormone hepcidin in hepatocytes. Inadequate hepcidin expression signals for excessive iron absorption from the diet and iron deposition in tissues causing multiple organ damage and failure. This review focuses on the molecular actions of the HFE/Hfe and hepcidin in maintaining systemic iron homeostasis and approaches undertaken so far to combat iron overload in HFE/Hfe-HH. In the light of the recent investigations, novel roles of extra-hepatocytic Hfe are discussed raising a question to the relevance of the multipurpose functions of Hfe for the understanding of HH-associated pathologies.
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