Resolvin D1 attenuates activation of sensory transient receptor potential channels leading to multiple anti-nociception
Article first published online: 2 JUN 2010
© 2010 The Authors. British Journal of Pharmacology © 2010 The British Pharmacological Society
British Journal of Pharmacology
Volume 161, Issue 3, pages 707–720, October 2010
How to Cite
Bang, S., Yoo, S., Yang, T., Cho, H., Kim, Y. and Hwang, S. (2010), Resolvin D1 attenuates activation of sensory transient receptor potential channels leading to multiple anti-nociception. British Journal of Pharmacology, 161: 707–720. doi: 10.1111/j.1476-5381.2010.00909.x
- Issue published online: 3 SEP 2010
- Article first published online: 2 JUN 2010
- Received11 October 2009Revised21 April 2010Accepted11 May 2010
- Resolvin D1;
- sensory neurons;
- nociceptive behaviours;
BACKGROUND AND PURPOSE Temperature-sensitive transient receptor potential ion channels (thermoTRPs) expressed in primary sensory neurons and skin keratinocytes play a crucial role as peripheral pain detectors. Many natural and synthetic ligands have been found to act on thermoTRPs, but little is known about endogenous compounds that inhibit these TRPs. Here, we asked whether resolvin D1 (RvD1), a naturally occurring anti-inflammatory and pro-resolving lipid molecule is able to affect the TRP channel activation.
EXPERIMENTAL APPROACH We examined the effect of RvD1 on the six thermoTRPs using Ca2+ imaging and whole cell electrophysiology experiments using the HEK cell heterologous expression system, cultured sensory neurons and HaCaT keratinocytes. We also checked changes in agonist-specific acute licking/flicking or flinching behaviours and TRP-related mechanical and thermal pain behaviours using Hargreaves, Randall-Selitto and von Frey assay systems with or without inflammation.
KEY RESULTS RvD1 inhibited the activities of TRPA1, TRPV3 and TRPV4 at nanomolar and micromolar levels. Consistent attenuations in agonist-specific acute pain behaviours by immediate peripheral administration with RvD1 were also observed. Furthermore, local pretreatment with RvD1 significantly reversed mechanical and thermal hypersensitivity in inflamed tissues.
CONCLUSIONS AND IMPLICATIONS RvD1 was a novel endogenous inhibitor for several sensory TRPs. The results of our behavioural studies suggest that RvD1 has an analgesic potential via these TRP-related mechanisms.