Thermosensitive transient receptor potential channel (Thermo-TRP) (Thermo-TRPs)

Thermosensitive transient receptor potential (Thermo-TRP) channels are a specialized group of non-selective cation channels that function as molecular thermometers, gating in response to specific temperature ranges (Vay et al., 2012; doi:10.1111/j.1476-5381.2011.01601.x). This family includes members such as TRPV1-4, TRPM8, and TRPA1, which are activated by thermal stimuli ranging from noxious cold to extreme heat, as well as various chemical ligands like capsaicin and menthol (Julius, 2013; doi:10.1126/science.1233270). Primarily expressed in primary afferent sensory neurons, these channels convert thermal energy into electrical signals, playing a fundamental role in thermosensation and nociception. Beyond sensory perception, they are involved in physiological processes like thermoregulation, vascular tone, and inflammatory signaling. In disease states, dysregulation of Thermo-TRPs contributes to chronic pain, neuropathic conditions, and inflammatory disorders, making them high-priority therapeutic targets. Pharmacological strategies include the use of agonists to induce long-term desensitization or antagonists to block pain signaling, though clinical development has been complicated by side effects such as hyperthermia and impaired heat perception (Gavva et al., 2008; doi:10.1016/j.tips.2008.01.003).

Other names

Thermo-TRP channelsTemperature-sensitive ion channelsThermoreceptors

Agonist-induced desensitization of sensory nerve fibers and competitive or non-competitive antagonism of channel gating (Vay et al., 2012; doi:10.1111/j.1476-5381.2011.01601.x).