Calcium ion homeostasis pathway

The calcium ion homeostasis pathway is a complex network of channels, pumps, exchangers, and sensors responsible for maintaining cellular and extracellular Ca²⁺ concentrations within a precise physiological range. Major components include voltage-gated calcium channels, CRAC channels (ORAI/STIM), ryanodine receptors (RyR), inositol trisphosphate receptors (IP3R), mitochondrial calcium uniporter (MCU), and various calcium-transporting ATPases (SERCA, PMCA) and exchangers (NCX). Imbalances are associated with a wide array of diseases such as heart failure, neurodegenerative diseases, immune dysfunction, and cancer. Therapeutic targeting focuses on individual molecules within the pathway, not the pathway itself. The pathway is a conceptual network and should not be annotated as a discrete molecular target. For structured data or therapeutic development, refer to its constituent molecules (e.g., ORAI1, STIM1, voltage-gated calcium channel subtypes, CALHM family, etc.).

Other names

Calcium homeostasis pathwayCalcium signaling pathwayCalcium regulation pathwayCalcium handling pathway

Inhibition or activation of calcium channels (blockers, agonists); Inhibition of calcium release from intracellular stores; Inhibition of calcium-dependent enzymes (e.g., calcineurin inhibitors)