Transient receptor potential melastatin 8 receptor (TRPM8)

The **transient receptor potential melastatin 8 receptor (TRPM8)** is a non-selective cation channel and member of the TRP channel superfamily, primarily responsible for detecting environmental cold and cooling agents such as menthol and icilin[1][2][4]. TRPM8 is abundantly expressed in a subset of sensory neurons that innervate cold-sensitive tissues like skin, mucosa, and tongue, and its activation allows sodium and calcium influx, leading to neuronal depolarization and the generation of action potentials that encode cold sensation[2][4]. Structurally, TRPM8 is a multimodal sensor gated by temperature, cooling agents, voltage, pressure, and osmolality[4]. Beyond its role in somatosensory physiology, TRPM8 has become a therapeutic target in the treatment of neuropathic pain, chronic cough, airway hyperreactivity, irritable bowel syndrome, and possibly cancer due to its unique pharmacological profile and tissue distribution[1][4]. Modulators of TRPM8, both agonists and antagonists, are under investigation for various clinical indications[1][4].

Other names

Cold and menthol receptorCold receptorTRPM8 channelCMR1

Agonists activate TRPM8 to produce cooling sensation or cold-induced depolarization\nAntagonists inhibit activation, reducing cold hypersensitivity and potentially pathologic cold responses