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Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
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Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay
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Published on: January 31, 2022

Iron regulation by hepcidin.

Ningning Zhao1, An-Sheng Zhang, Caroline A Enns

  • 1Department of Cell and Developmental Biology, Oregon Health and Science University, Portland, Oregon 97239, USA.

The Journal of Clinical Investigation
|June 1, 2013
PubMed
Summary
This summary is machine-generated.

Hepcidin, a key hormone regulating iron, is controlled by iron stores, inflammation, and red blood cell production. Its misregulation causes various diseases, making its study crucial for treating iron imbalances.

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Area of Science:

  • Biochemistry
  • Physiology
  • Molecular Biology

Background:

  • Hepcidin is a central hormone governing systemic iron homeostasis.
  • Hepcidin regulation is influenced by iron status, inflammation, hypoxia, and erythropoiesis.
  • Dysregulation of hepcidin is implicated in numerous diseases, including anemias and iron overload disorders.

Purpose of the Study:

  • To elucidate the intricate regulatory mechanisms of hepcidin expression.
  • To identify key proteins involved in the iron-mediated regulation of hepcidin.
  • To understand the pathological consequences of hepcidin misregulation in disease.

Main Methods:

  • Review of existing literature on hepcidin regulation.
  • Analysis of molecular pathways involving hepcidin and iron metabolism.
  • Correlation of hepcidin levels with disease states.

Main Results:

  • Hepcidin expression is tightly controlled by a complex network of signaling pathways.
  • Multiple proteins, including BMP6 and hemojuvelin, are critical for iron-sensing and hepcidin regulation.
  • Disruptions in these pathways lead to conditions like hereditary hemochromatosis and anemia of chronic disease.

Conclusions:

  • Understanding hepcidin regulation is vital for developing therapeutic strategies.
  • Targeting hepcidin pathways may offer novel treatments for iron deficiency and overload.
  • Further research into hepcidin's role in disease pathogenesis is warranted.