Dissecting the Signaling Pathways Involved in the Crosstalk between Metabotropic Glutamate 5 and Cannabinoid Type 1 Receptors

The metabotropic glutamate 5 receptor and the cannabinoid type 1 receptor are G protein–coupled receptors that are widely expressed in the central nervous system. Metabotropic glutamate 5 receptors, present at the postsynaptic site, are coupled to Gαq/11 proteins and display an excitatory response u...

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Bibliographic Details
Published in:Molecular pharmacology 2016-11, Vol.90 (5), p.609-619
Main Authors: Olmo, Isabella G., Ferreira-Vieira, Talita H., Ribeiro, Fabiola M.
Format: Article
Language:English
Subjects:
Animals
Endocannabinoids - metabolism
Humans
Nociception
Receptor Cross-Talk
Receptor, Cannabinoid, CB1 - metabolism
Receptor, Metabotropic Glutamate 5 - metabolism
Signal Transduction
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Summary:The metabotropic glutamate 5 receptor and the cannabinoid type 1 receptor are G protein–coupled receptors that are widely expressed in the central nervous system. Metabotropic glutamate 5 receptors, present at the postsynaptic site, are coupled to Gαq/11 proteins and display an excitatory response upon activation, whereas the cannabinoid type 1 receptor, mainly present at presynaptic terminals, is coupled to the Gi/o protein and triggers an inhibitory response. Recent studies suggest that the glutamatergic and endocannabinoid systems exhibit a functional interaction to modulate several neural processes. In this review, we discuss possible mechanisms involved in this crosstalk and its relationship with physiologic and pathologic conditions, including nociception, addiction, and fragile X syndrome. ▪
ISSN:0026-895X
1521-0111
DOI:10.1124/mol.116.104372