Transient receptor potential melastatin channel (TRPM channel)

Transient receptor potential melastatin channels comprise a family of eight related non-selective cation channels (TRPM1–TRPM8) within the larger transient receptor potential (TRP) superfamily. These channels form tetramers and differ markedly in ion selectivity, gating mechanisms, and physiological roles. TRPM channels mediate cellular influx of Ca²⁺, Mg²⁺, and other cations, thereby regulating membrane potential, calcium signaling, and various sensory modalities such as temperature detection (cold via TRPM8, heat and pain via TRPM3), taste (TRPM5), and vision (TRPM1). Certain family members, such as TRPM6 and TRPM7, also possess kinase activity. They are widely expressed in excitable and non-excitable tissues and are implicated in a spectrum of diseases including cancer, neurological disorders, and cardiovascular dysfunction. Their diverse physiological and pathological functions make them both important basic science subjects and emerging therapeutic targets[2][5][6][7].

Other names

TRPMMelastatin-related transient receptor potential channelTRPM family

Modulation of cation (Ca²⁺, Mg²⁺, Na⁺) conductance through plasma membrane or intracellular compartments Agonists/antagonists stabilize open or closed channel state Indirect effects via altered cellular depolarization, calcium signaling, or kinase activity[2][6][7].