Voltage-gated ion channels and Transient Receptor Potential channels (VGIC and TRP channels) (VGIC/TRP)

Voltage-gated ion channels (VGICs) and Transient Receptor Potential (TRP) channels are two expansive superfamilies of membrane proteins that govern the selective movement of ions across cellular membranes in response to electrical or environmental stimuli [1]. VGICs, which include sodium (Na+), potassium (K+), and calcium (Ca2+) channels, are defined by their ability to open or close in response to changes in transmembrane voltage, making them indispensable for action potential generation and propagation in excitable tissues like the brain and heart [2]. TRP channels are primarily non-selective cation channels that serve as polymodal sensors, detecting a diverse range of stimuli including temperature, mechanical stress, and chemical ligands [3]. These channels play fundamental roles in physiological processes such as sensory perception (pain, taste, heat), muscle contraction, and the regulation of vascular tone [4]. Mutations or dysregulation of these channels are linked to a variety of channelopathies, including epilepsy, chronic pain, and cardiac arrhythmias [5]. Consequently, they are major targets for pharmacological intervention, with a wide array of approved drugs such as local anesthetics, anticonvulsants, and calcium channel blockers [6].

Other names

Voltage-sensitive ion channelsTRP superfamilyCation channelsVoltage-gated channels

Modulation of ion conductance through pore blockade, stabilization of specific conformational states (e.g., inactivated state), or allosteric regulation of gating mechanisms in response to voltage or ligands [1, 3, 5].