Enterocyte metal transporters

Enterocyte metal transporters are a specialized group of membrane proteins responsible for the uptake and export of essential trace elements, such as iron, zinc, and copper, across the intestinal epithelium [1, 3]. This group includes the apical Divalent Metal Transporter 1 (DMT1), which facilitates the absorption of non-heme iron, and the basolateral exporter Ferroportin, which is the sole known conduit for iron entry into the systemic circulation [1, 2]. Other critical members include ZIP4 for zinc uptake and CTR1 for copper absorption [4, 5]. These transporters are tightly regulated by systemic signals, such as the hormone hepcidin, which induces the degradation of ferroportin to limit iron availability [2]. Dysregulation of these transporters leads to significant clinical conditions, including iron-deficiency anemia, hereditary hemochromatosis, and rare genetic disorders like Menkes disease or acrodermatitis enteropathica [3, 4]. Therapeutic interventions targeting these pathways include metal supplements, chelating agents, and novel hepcidin mimetics designed to modulate metal flux for the treatment of overload or deficiency states [2, 3].

Other names

Intestinal metal transportersSLC family metal transportersApical and basolateral metal transporters

Modulation of metal flux through substrate supplementation, competitive inhibition of uptake, or induced degradation of export proteins.