Cellular iron homeostasis and therapeutic implications of iron chelators in cancer.

Iron metabolism and homeostasis are imperative for the maintenance of normal physiological activities due to the element's critical involvement in a wide variety of crucial biological processes like cellular respiration, metabolic pathways, DNA replication, repair, detoxification, neurotransmission and cellular signaling. Being a key contributor of crucial machineries regulating cellular proliferation and survival, it facilitates the process of tumor growth and development. Thus, tumor cells strive to acquire higher amount of iron than non-malignant cells to satisfy their elevated rate of metabolism.