Iron, hepcidin, and the metal connection

Olivier Loréal, Thibault Cavey, Edouard Bardou-Jacquet, Pascal Guggenbuhl, Martine Ropert, Pierre Brissot, Olivier Loréal, Thibault Cavey, Edouard Bardou-Jacquet, Pascal Guggenbuhl, Martine Ropert, Pierre Brissot

Abstract

Identification of new players in iron metabolism, such as hepcidin, which regulates ferroportin and divalent metal transporter 1 expression, has improved our knowledge of iron metabolism and iron-related diseases. However, from both experimental data and clinical findings, "iron-related proteins" appear to also be involved in the metabolism of other metals, especially divalent cations. Reports have demonstrated that some metals may affect, directly or indirectly, the expression of proteins involved in iron metabolism. Throughout their lives, individuals are exposed to various metals during personal and/or occupational activities. Therefore, better knowledge of the connections between iron and other metals could improve our understanding of iron-related diseases, especially the variability in phenotypic expression, as well as a variety of diseases in which iron metabolism is secondarily affected. Controlling the metabolism of other metals could represent a promising innovative therapeutic approach.

Keywords: DMT1; disease; ferroportin; iron; metabolism; metal; transferrin.

Figures

FIGURE 1
FIGURE 1
Schematic representation of potential connections between iron, hepcidin and non-iron metals. Special focus has been made on three major processes in iron metabolism – digestive iron absorption, iron mobilization and cell iron delivery (yellow boxes) – and some major proteins and parameters directly involved in iron metabolism (blue boxes). White boxes indicate non-iron metals for which relationships have been reported with adjacent iron metabolism protein (For details see in the text). Red arrows represent an involvement of the protein in the targeted biological process. Blue arrows indicate an impact of the protein on the expression/activity of the targeted protein.

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