Stretch-activated ion channels and Transient Receptor Potential channels (SACs and TRP channels) (SACs/TRP channels)

Stretch-activated ion channels (SACs) and Transient Receptor Potential (TRP) channels are classes of membrane proteins essential for mechanotransduction and sensory signaling. SACs, such as the Piezo1 and Piezo2 proteins, are directly gated by mechanical tension in the lipid bilayer, playing vital roles in touch, hearing, and vascular volume regulation (Coste et al., 2010, Nature). The TRP channel superfamily comprises several subfamilies (e.g., TRPV, TRPM, TRPA) that respond to diverse stimuli including temperature, chemical ligands, and mechanical stress (Clapham, 2003, Nature). These channels are critically involved in various physiological processes and diseases, including chronic pain, cardiac arrhythmias, and polycystic kidney disease (Nilius & Szallasi, 2014, Nature Reviews Drug Discovery). Pharmacological agents like GsMTx4 target SACs to study mechanosensitivity, while TRP-specific ligands like capsaicin and menthol are used to modulate pain and thermal sensation (Julius, 2013, Annual Review of Cell and Developmental Biology). Due to their broad expression across tissues, these channels are significant therapeutic targets, though achieving selectivity remains a major challenge in drug development.

Other names

Mechanosensitive ion channelsMSCsMechanogated ion channelsTRP superfamily

Modulation of cation permeability (calcium, sodium, potassium) in response to mechanical stretch or chemical ligands (Nilius & Owsianik, 2011, Genome Biology).