Physiological iron storage and transport proteins (None)

Physiological iron storage and transport proteins constitute a critical system responsible for maintaining systemic and cellular iron homeostasis (StatPearls, 2023). This group primarily includes transferrin, which transports iron in the plasma, and ferritin, the primary intracellular iron storage protein (NIH, 2023). Cellular iron uptake is mediated by the transferrin receptor, while ferroportin serves as the sole known cellular iron exporter (UniProt, 2024). The system is tightly regulated by the liver-derived hormone hepcidin, which binds to and triggers the degradation of ferroportin to control iron absorption and recycling (PubMed, 2022). Dysregulation of these proteins leads to significant clinical conditions, such as iron-deficiency anemia or hereditary hemochromatosis and other iron overload disorders. Therapeutic interventions targeting this system include iron supplements to treat deficiency and iron chelators to manage systemic overload. Emerging therapies, such as hepcidin mimetics and ferroportin inhibitors, are being developed to treat disorders of iron distribution and erythropoiesis (PubMed, 2023). Monitoring biomarkers like serum ferritin and transferrin saturation is essential for managing iron-related pathologies and ensuring therapeutic efficacy.

Other names

Iron homeostasis proteinsIron metabolism proteinsIron regulatory proteinsIron handling proteins

Drugs targeting this system work by replenishing iron stores, sequestering excess iron to prevent tissue damage, or modulating the hepcidin-ferroportin axis to regulate iron entry into the circulation.