TRPM8

TRPM8 (Transient Receptor Potential Cation Channel Subfamily M Member 8) is a protein that in humans is encoded by the TRPM8 gene. It is a member of the transient receptor potential channel family and is also known as the cold and menthol receptor 1 (CMR1).

Function

TRPM8 is an ion channel located on the plasma membrane of nerve cells. It is activated by cold temperatures and cooling agents like menthol. This protein is involved in the detection of cold stimuli in the environment and the subsequent initiation of the body's physiological responses to cold.

Structure

The TRPM8 protein is a tetramer, composed of four identical subunits. Each subunit has six transmembrane domains with a pore loop, a coiled-coil domain, and cytoplasmic N- and C-termini. The channel is permeable to cations, including calcium, sodium, and potassium ions.

Clinical significance

TRPM8 has been implicated in a variety of medical conditions. It is overexpressed in several types of cancer, including prostate and lung cancer, and may play a role in cancer cell proliferation and survival. In addition, mutations in the TRPM8 gene have been associated with migraine and other pain disorders.

Pharmacology

Several drugs have been developed to target TRPM8. These include menthol, which activates the channel, and various antagonists that inhibit its activity. These drugs have potential applications in the treatment of pain, cancer, and other conditions.

See also

• Transient receptor potential channel
• Menthol
• Cancer
• Migraine

References

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