The Role of the Cannabinoid CB2 Receptor in Pain Transmission and Therapeutic Potential of Small Molecule CB2 Receptor Agonists

Author(s): G T. Whiteside, G. P. Lee, K J. Valenzano

Journal Name: Current Medicinal Chemistry

Volume 14 , Issue 8 , 2007

Become EABM
Become Reviewer
Call for Editor


This review gives a brief overview of the expression patterns, molecular pharmacology and physiological role of the cannabinoid 2 receptor (CB2) in pain. Particular emphasis is given to the therapeutic utility of CB2 receptor agonists. Through studies utilizing selective CB2 receptor agonists, non-selective cannabinoid agonists in conjunction with selective CB1 and CB2 receptor antagonists, or CB2 receptor knockout mice, it is now clear that this receptor plays a critical role in nociception. To this end, CB2 receptors have been shown to modulate acute pain, chronic inflammatory pain, post-surgical pain, cancer pain and pain associated with nerve injury. Here we review these studies and the compounds that were utilized. We hypothesize the mechanism of action by which the CB2 receptor could be involved in these processes. Finally we summarize the most recent novel chemical scaffolds that are being investigated towards advancing selective CB2 receptor agonists into the clinic. Many new pharmacological agents have been identified by high throughput screening and small molecule lead discovery and optimization in the past 10 years. It is anticipated that at least some of these agents may ultimately constitute effective new pain therapeutics that lack the side effects associated with traditional cannabinoid ligands.

Keywords: Cannabinoid, CB2, receptor, pain, inflammation, neuropathic

Rights & PermissionsPrintExport Cite as

Article Details

Year: 2007
Page: [917 - 936]
Pages: 20
DOI: 10.2174/092986707780363023
Price: $65

Article Metrics

PDF: 26