4.5 Article

The Distinct Roles of Two GPCRs, MrgprC11 and PAR2, in Itch and Hyperalgesia

Journal

SCIENCE SIGNALING
Volume 4, Issue 181, Pages -

Publisher

AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/scisignal.2001925

Keywords

-

Funding

  1. Whitehall Foundation
  2. Blaustein Pain Research Fund
  3. NIH [NS054791, GM087369]
  4. National Rosacea Society
  5. West Havens Foundation
  6. NSF

Ask authors/readers for more resources

Itch has been defined as an unpleasant skin sensation that triggers the urge to scratch. Primary sensory dorsal root ganglia neurons detect itch stimuli through peripheral axons in the skin, playing an important role in generating itch. Itch is broadly categorized as histaminergic (sensitive to antihistamines) or nonhistaminergic. The peptide Ser-Leu-Ile-Gly-Arg-Leu (SLIGRL) is an itch-inducing agent widely used to study histamine-independent itch. Here, we show that Mrgprs (Mas-related G protein-coupled receptors), particularly MrgprC11, rather than PAR2 (protease-activated receptor 2) as previously thought, mediate this type of itch. A shorter peptide, SLIGR, which specifically activates PAR2 but not MrgprC11, induced thermal pain hypersensitivity in mice but not a scratch response. Therefore, although both Mrgpr and PAR2 are SLIGRL-responsive G protein-coupled receptors present in dorsal root ganglia, each plays a specific role in mediating itch and pain.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available