TRPC6

TRPC6 (Transient Receptor Potential Canonical 6) is a receptor-activated, nonselective cation channel of the canonical TRPC family that mediates Ca²⁺ influx following activation by diacylglycerol (DAG), thereby coupling phospholipase C-dependent signaling to sustained intracellular calcium entry and downstream cellular responses^[1][2]. Mechanistically, TRPC6 participates in pathways that regulate cytoskeletal organization, cell adhesion, contractility, and calcium-dependent signal transduction, linking extracellular receptor stimulation to functional changes in multiple tissues^[2][3]. In the kidney, TRPC6 is highly enriched in podocytes and is associated with the glomerular slit diaphragm, where normal channel activity contributes to renal function and filtration barrier integrity^[4]. Disease relevance is strongly supported by genetic and functional studies showing that altered TRPC6 activity and pathogenic variants are associated with focal segmental glomerulosclerosis and other kidney disorders, making the channel a widely used experimental target in renal disease models^[1][4]. Compared with the closely related isoform TRPC3, TRPC6 shares DAG responsiveness but displays distinct structural and functional properties, including differences in ion permeation and channel regulation that support nonredundant biological roles^[2]. For experimental applications, high-affinity TRPC6 inhibitors such as BTDM have enabled structural and mechanistic studies, revealing inhibitor binding sites and providing tools for investigating TRPC6-dependent signaling pathways and disease mechanisms^[2].

References: