Physiological iron-dependent pathways

Physiological iron-dependent pathways encompass the complex network of biochemical processes that utilize iron as a critical cofactor for essential cellular functions, including oxygen transport, DNA synthesis, and energy production (StatPearls, 2023). These pathways involve the synthesis of heme for hemoglobin and myoglobin, as well as the assembly of iron-sulfur clusters required for the mitochondrial electron transport chain (NIH, 2022). Iron homeostasis is tightly regulated by a suite of proteins, including transferrin for transport, ferritin for storage, and hepcidin for systemic regulation, to prevent the accumulation of toxic free iron (PubMed, 2021). Dysregulation of these pathways leads to significant pathologies such as iron-deficiency anemia, hereditary hemochromatosis, and various neurodegenerative disorders (UniProt, 2024). Therapeutic interventions targeting these pathways include iron salts for supplementation, chelating agents like deferoxamine to treat overload, and emerging ferroptosis modulators for cancer treatment (Nature Reviews Drug Discovery, 2022). Because iron can catalyze the formation of damaging free radicals through the Fenton reaction, maintaining the balance of these pathways is a critical safety and therapeutic priority (PubChem, 2023).

Other names

Iron metabolismIron homeostasisHeme biosynthetic pathwayIron-sulfur cluster biogenesis

Modulation of systemic and cellular iron levels through supplementation, chelation, or regulation of iron-handling proteins like hepcidin and ferroportin (StatPearls, 2023).