Transient receptor potential canonical channel; Transient receptor potential melastatin channel (TRPC channel (for canonical); TRPM channel (for melastatin))

Transient receptor potential canonical (TRPC) and transient receptor potential melastatin (TRPM) channels are distinct subfamilies within the TRP ion channel superfamily. TRPC channels (seven mammalian members, TRPC1–7) are non-selective cation channels activated downstream of receptor stimulation—primarily via the phospholipase C (PLC) signaling cascade involving GPCRs and receptor tyrosine kinases. They regulate calcium entry, membrane depolarization, and contribute to diverse functions such as neurotransmission, vascular tone, kidney function, and immune response. Dysfunction or mutations in TRPC channels, particularly TRPC6, are associated with diseases including focal segmental glomerulosclerosis, cardiovascular disease, and neurological disorders[1][3][7][8]. TRPM channels (eight mammalian members, TRPM1–8) are structurally related but functionally distinct, with roles in sensory physiology (such as temperature and taste perception), cellular magnesium homeostasis, cardiac function, and cancer progression. Both subfamilies are widely expressed and often participate in complex signaling networks. Their pharmacology includes both blockers and activators, but clinical translation has been challenging due to physiological redundancy and tissue-specific effects[3][4][6][7]. This entry should be separated into TRPC channel and TRPM channel for precise structured data; both are considered therapeutic targets with distinct, though sometimes overlapping, roles in physiology and disease.

Other names

TRP canonical channelClassical TRP channelTRP melastatin channel

Blockade or activation of channel pore to alter calcium and other cation influx. Modulation of downstream signaling pathways such as MAPK, AMPK, and CaMKII pathways. Indirect modulation through GPCR or phospholipase C signaling cascade.