Abstract
Cellular signaling is regulated by several biochemical reactions, whose dynamics depends on changes in the fluxes of specific ligands through the containment barriers that are the biological membranes. The regulation of this complex dynamic equilibrium is mainly due to the activity of border proteins, that must be able to interact simultaneously with the lipid bilayer and the extracellular milieu. Endocannabinoid receptors, that include type-1 and type-2 cannabinoid receptors, the transient vanilloid potential receptors and the peroxisome proliferator-activated receptors, represent one of the most intriguing examples of “border” proteins. They have also been identified as important drug discovery targets with potential therapeutic applications, including antiemesis, appetite enhancement, analgesia, glaucoma treatment, and immune suppression. However, as yet the molecular details of endocannabinoid receptor regulation remain elusive. In this review we summarize the most relevant aspects of the structural/functional characterization of these receptors, with a focus on the active role played by biological membranes (in particular lipid rafts) in the modulation of their accessibility and mode of ligand binding. Based on available evidence, we propose that endocannabinoid receptors can be regulated by the rate of interlayer exchange and lateral diffusion of endocannabinoid/cholesterol complexes within lipid bilayers, thus suggesting innovative approaches for the therapeutic exploitation of the membrane component of endocannabinoid signaling.
Current Medicinal Chemistry
Title: Interaction of Endocannabinoid Receptors with Biological Membranes
Volume: 17 Issue: 14
Author(s): E. Dainese, S. Oddi and M. Maccarrone
Affiliation:
Abstract: Cellular signaling is regulated by several biochemical reactions, whose dynamics depends on changes in the fluxes of specific ligands through the containment barriers that are the biological membranes. The regulation of this complex dynamic equilibrium is mainly due to the activity of border proteins, that must be able to interact simultaneously with the lipid bilayer and the extracellular milieu. Endocannabinoid receptors, that include type-1 and type-2 cannabinoid receptors, the transient vanilloid potential receptors and the peroxisome proliferator-activated receptors, represent one of the most intriguing examples of “border” proteins. They have also been identified as important drug discovery targets with potential therapeutic applications, including antiemesis, appetite enhancement, analgesia, glaucoma treatment, and immune suppression. However, as yet the molecular details of endocannabinoid receptor regulation remain elusive. In this review we summarize the most relevant aspects of the structural/functional characterization of these receptors, with a focus on the active role played by biological membranes (in particular lipid rafts) in the modulation of their accessibility and mode of ligand binding. Based on available evidence, we propose that endocannabinoid receptors can be regulated by the rate of interlayer exchange and lateral diffusion of endocannabinoid/cholesterol complexes within lipid bilayers, thus suggesting innovative approaches for the therapeutic exploitation of the membrane component of endocannabinoid signaling.
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Cite this article as:
Dainese E., Oddi S. and Maccarrone M., Interaction of Endocannabinoid Receptors with Biological Membranes, Current Medicinal Chemistry 2010; 17 (14) . https://dx.doi.org/10.2174/092986710790980087
DOI https://dx.doi.org/10.2174/092986710790980087 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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