TRPM3

Last updated
TRPM3
Identifiers
Aliases TRPM3 , GON-2, LTRPC3, MLSN2, transient receptor potential cation channel subfamily M member 3
External IDs OMIM: 608961; MGI: 2443101; HomoloGene: 62287; GeneCards: TRPM3; OMA:TRPM3 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)
RefSeq (protein)

n/a

Location (UCSC) Chr 9: 70.53 – 71.45 Mb Chr 19: 22.12 – 22.97 Mb
PubMed search [3] [4]
Wikidata
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Transient receptor potential cation channel subfamily M member 3 is a protein that in humans is encoded by the TRPM3 gene. [5]

Function

The product of this gene belongs to the family of transient receptor potential (TRP) channels. [6] TRP channels are Ca2+ permeable non-selective cation channels that play roles in a wide variety of physiological processes, including calcium signaling, heat and cold sensation, calcium and magnesium homeostasis. TRPMs mediates sodium and calcium entry, which induces depolarization and a cytoplasmic Ca2+ signal. Alternatively spliced transcript variants encoding different isoforms have been -identified. [7] TRPM3 was shown to be activated by the neurosteroid pregnenolone sulfate as well as the synthetic compound CIM0216.

Peripheral heat sensation

TRPM3 is expressed in peripheral sensory neurons of the dorsal root ganglia, and they are activated by high temperatures. [8] Genetic deletion of TRPM3 in mice reduces sensitivity to noxious heat, as well as inflammatory thermal hyperalgesia. [8] [9] Inhibitors of TRPM3 were also shown to reduce noxious heat and inflammatory heat hyperalgesia, [10] [11] [9] as well as reduce heat hyperalgesia and spontaneous pain in nerve injury induced neuropathic pain. [9]

Receptor mediated inhibition

TRPM3 is robustly inhibited by the activation of cell surface receptors that couple to inhibitory heterotrimeric G-proteins (Gi) via direct binding of the Gβγ subunit of the G-protein to the channel. [12] [13] [14] Gβγ was shown to bind to a short α-helical segment of the channel. [15] Receptors that inhibit TRPM3 include opioid receptors [13] [16] and GABAB receptors. [12]

TRPM3 in the brain

Mutations in TRPM3 in humans, were recently shown to cause a intellectual disability and epilepsy. [17] The disease associated mutations were shown to increase the sensitivity of the channel to agonists, and heat. [18] [19] [20]

TRPM3 ligands, activators and modulators

Activators

Channel Blockers

  1. Mefenamic acid [23]
  2. Citrus fruit flavonoids, e.g. naringenin, isosakuranetin and hesperetin, as well as ononetin (a deoxybenzoin). [24]
  3. Primidone, a clinically used antiepileptic medication also directly inhibits TRPM3. [10]

Activity Modulator

See also

Related Research Articles

Transient receptor potential channels are a group of ion channels located mostly on the plasma membrane of numerous animal cell types. Most of these are grouped into two broad groups: Group 1 includes TRPC, TRPV, TRPVL, TRPM, TRPS, TRPN, and TRPA. Group 2 consists of TRPP and TRPML. Other less-well categorized TRP channels exist, including yeast channels and a number of Group 1 and Group 2 channels present in non-animals. Many of these channels mediate a variety of sensations such as pain, temperature, different kinds of taste, pressure, and vision. In the body, some TRP channels are thought to behave like microscopic thermometers and used in animals to sense hot or cold. Some TRP channels are activated by molecules found in spices like garlic (allicin), chili pepper (capsaicin), wasabi ; others are activated by menthol, camphor, peppermint, and cooling agents; yet others are activated by molecules found in cannabis or stevia. Some act as sensors of osmotic pressure, volume, stretch, and vibration. Most of the channels are activated or inhibited by signaling lipids and contribute to a family of lipid-gated ion channels.

A calcium channel is an ion channel which shows selective permeability to calcium ions. It is sometimes synonymous with voltage-gated calcium channel, which are a type of calcium channel regulated by changes in membrane potential. Some calcium channels are regulated by the binding of a ligand. Other calcium channels can also be regulated by both voltage and ligands to provide precise control over ion flow. Some cation channels allow calcium as well as other cations to pass through the membrane.

<span class="mw-page-title-main">TRPV1</span> Human protein for regulating body temperature

The transient receptor potential cation channel subfamily V member 1 (TRPV1), also known as the capsaicin receptor and the vanilloid receptor 1, is a protein that, in humans, is encoded by the TRPV1 gene. It was the first isolated member of the transient receptor potential vanilloid receptor proteins that in turn are a sub-family of the transient receptor potential protein group. This protein is a member of the TRPV group of transient receptor potential family of ion channels. Fatty acid metabolites with affinity for this receptor are produced by cyanobacteria, which diverged from eukaryotes at least 2000 million years ago (MYA). The function of TRPV1 is detection and regulation of body temperature. In addition, TRPV1 provides a sensation of scalding heat and pain (nociception). In primary afferent sensory neurons, it cooperates with TRPA1 to mediate the detection of noxious environmental stimuli.

<span class="mw-page-title-main">TRPV</span> Subgroup of TRP cation channels named after the vanilloid receptor

TRPV is a family of transient receptor potential cation channels in animals. All TRPVs are highly calcium selective.

TRPM is a family of transient receptor potential ion channels (M standing for wikt:melastatin). Functional TRPM channels are believed to form tetramers. The TRPM family consists of eight different channels, TRPM1–TRPM8.

<span class="mw-page-title-main">MCOLN1</span> Protein-coding gene in the species Homo sapiens

Mucolipin-1(ML1) also known as TRPML1 is a protein that in humans is encoded by the MCOLN1 gene. It is a member of the small family of the TRPML channels, a subgroup of the large protein family of TRP ion channels.

<span class="mw-page-title-main">TRPC3</span> Protein and coding gene in humans

Short transient receptor potential channel 3 (TrpC3) also known as transient receptor protein 3 (TRP-3) is a protein that in humans is encoded by the TRPC3 gene. The TRPC3/6/7 subfamily are implicated in the regulation of vascular tone, cell growth, proliferation and pathological hypertrophy. These are diacylglycerol-sensitive cation channels known to regulate intracellular calcium via activation of the phospholipase C (PLC) pathway and/or by sensing Ca2+ store depletion. Together, their role in calcium homeostasis has made them potential therapeutic targets for a variety of central and peripheral pathologies.

<span class="mw-page-title-main">TRPC4</span> Protein and coding gene in humans

The short transient receptor potential channel 4 (TrpC4), also known as Trp-related protein 4, is a protein that in humans is encoded by the TRPC4 gene.

<span class="mw-page-title-main">TRPC5</span> Protein-coding gene in the species Homo sapiens

Short transient receptor potential channel 5 (TrpC5) also known as transient receptor protein 5 (TRP-5) is a protein that in humans is encoded by the TRPC5 gene. TrpC5 is subtype of the TRPC family of mammalian transient receptor potential ion channels.

<span class="mw-page-title-main">TRPA1</span> Protein and coding gene in humans

Transient receptor potential cation channel, subfamily A, member 1, also known as transient receptor potential ankyrin 1, TRPA1, or The Mustard and Wasabi Receptor, is a protein that in humans is encoded by the TRPA1 gene.

<span class="mw-page-title-main">TRPV2</span> Protein-coding gene in the species Homo sapiens

Transient receptor potential cation channel subfamily V member 2 is a protein that in humans is encoded by the TRPV2 gene. TRPV2 is a nonspecific cation channel that is a part of the TRP channel family. This channel allows the cell to communicate with its extracellular environment through the transfer of ions, and responds to noxious temperatures greater than 52 °C. It has a structure similar to that of potassium channels, and has similar functions throughout multiple species; recent research has also shown multiple interactions in the human body.

<span class="mw-page-title-main">TRPV4</span> Protein-coding gene in humans

Transient receptor potential cation channel subfamily V member 4 is an ion channel protein that in humans is encoded by the TRPV4 gene.

<span class="mw-page-title-main">TRPM8</span> Protein-coding gene in humans

Transient receptor potential cation channel subfamily M (melastatin) member 8 (TRPM8), also known as the cold and menthol receptor 1 (CMR1), is a protein that in humans is encoded by the TRPM8 gene. The TRPM8 channel is the primary molecular transducer of cold somatosensation in humans. In addition, mints can desensitize a region through the activation of TRPM8 receptors.

<span class="mw-page-title-main">TRPV3</span> Protein-coding gene in humans

Transient receptor potential cation channel, subfamily V, member 3, also known as TRPV3, is a human gene encoding the protein of the same name.

<span class="mw-page-title-main">TRPM7</span> Protein-coding gene in the species Homo sapiens

Transient receptor potential cation channel, subfamily M, member 7, also known as TRPM7, is a human gene encoding a protein of the same name.

<span class="mw-page-title-main">TRPV5</span> Protein-coding gene in the species Homo sapiens

Transient receptor potential cation channel subfamily V member 5 is a calcium channel protein that in humans is encoded by the TRPV5 gene.

Mechanosensation is the transduction of mechanical stimuli into neural signals. Mechanosensation provides the basis for the senses of light touch, hearing, proprioception, and pain. Mechanoreceptors found in the skin, called cutaneous mechanoreceptors, are responsible for the sense of touch. Tiny cells in the inner ear, called hair cells, are responsible for hearing and balance. States of neuropathic pain, such as hyperalgesia and allodynia, are also directly related to mechanosensation. A wide array of elements are involved in the process of mechanosensation, many of which are still not fully understood.

<span class="mw-page-title-main">CIM-0216</span> Chemical compound

CIM-0216 is a chemical compound which acts as a potent and selective activator of the TRPM3 calcium channel. It produces nociception and inflammation and is used to study the function of the TRPM3 receptor in these processes.

<span class="mw-page-title-main">Ononetin</span> Chemical compound

Ononetin is a natural product from the deoxybenzoin group, which is found in the Russian traditional medicine plant Ononis spinosa. It acts as an inhibitor of the transient receptor potential ion channel TRPM3 and has analgesic effects in animal studies, as well as being used for research into the role of TRPM3 in the immune system dysfunction associated with chronic fatigue syndrome.

TRPM3-related neurodevelopmental disorder is a monogenetic developmental and epileptic encephalopathy that affects the central nervous system. The broad phenotype includes global developmental delay, intellectual disability, epilepsy, musculoskeletal anomalies, altered pain perception, ataxia, hypotonia, nystagmus, and cerebellar atrophy.

References

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Further reading

This article incorporates text from the United States National Library of Medicine, which is in the public domain.