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Structure of a cannabinoid receptor and functional expression of the cloned cDNA

Nature volume 346, pages 561564 (09 August 1990) | Download Citation

Subjects

Abstract

MARIJUANA and many of its constituent cannabinoids influence the central nervous system (CNS) in a complex and dose-dependent manner1,2. Although CNS depression and analgesia are well documented effects of the cannabinoids, the mechanisms responsible for these and other cannabinoid-induced effects are not so far known3. The hydrophobic nature of these substances has suggested that cannabinoids resemble anaesthetic agents in their action, that is, they nonspecifically disrupt cellular membranes. Recent evidence, however, has supported a mechanism involving a G protein-coupled receptor found in brain and neural cell lines, and which inhibits adenylate cyclase activity in a dose-dependent, stereoselective and pertussis toxin-sensitive manner4–7. Also, the receptor is more responsive to psychoactive cannabinoids than to non-psychoactive cannabinoids8. Here we report the cloning and expression of a complementary DNA that encodes a G protein-coupled receptor with all of these properties. Its messenger RNA is found in cell lines and regions of the brain that have cannabinoid receptors. These findings suggest that this protein is involved in cannabinoid-induced CNS effects (including alterations in mood and cognition) experienced by users of marijuana.

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Affiliations

  1. Laboratory of Cell Biology, National Institutes of Mental Health, Bethesda, Maryland 20892, USA

    • Lisa A. Matsuda
    • , Stephen J. Lolait
    • , Michael J. Brownstein
    • , Alice C. Young
    •  & Tom I. Bonner

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https://doi.org/10.1038/346561a0

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