New Insights into Endocannabinoid Degradation and its Therapeutic Potential

Authors: Bari, M.; Battista, N.; Fezza, F.; Gasperi, V.; Maccarrone, M.

Source: Mini Reviews in Medicinal Chemistry, Volume 6, Number 3, March 2006 , pp. 257-268(12)

Publisher: Bentham Science Publishers

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Abstract:

Endocannabinoids are amides, esters and ethers of long chain polyunsaturated fatty acids, which act as new lipidic mediators. Anandamide (N-arachidonoylethanolamine; AEA) and 2-arachidonoylglycerol (2- AG) are the main endogenous agonists of cannabinoid receptors, able to mimic several pharmacological effects of (-)-Δ9-tetrahydrocannabinol (THC), the active principle of Cannabis sativa preparations like hashish and marijuana. The activity of AEA and 2-AG at their receptors is limited by cellular uptake through an anandamide membrane transporter (AMT), followed by intracellular degradation. A fatty acid amide hydrolase (FAAH) is the main AEA hydrolase, whereas a monoacylglycerol lipase (MAGL) is critical in degrading 2-AG. Here, we will review growing evidence that demonstrates that these hydrolases are pivotal regulators of the endogenous levels of AEA and 2-AG in vivo, overall suggesting that specific inhibitors of AMT, FAAH or MAGL may serve as attractive therapeutic targets for the treatment of human disorders.

Recently, the N-acylphosphatidylethanolamine-specific phospholipase D (NAPE-PLD), which synthesizes AEA from N-arachidonoylphosphatidylethanolamine (NArPE), and the diacylglycerol lipase (DAGL), which generates 2-AG from diacylglycerol (DAG) substrates, have been characterized. The role of these synthetic routes in maintaining the endocannabinoid tone in vivo will be discussed. Finally, the effects of inhibitors of endocannabinoid degradation in animal models of human disease will be reviewed, with an emphasis on their ongoing applications in anxiety, cancer and neurodegenerative disorders.

Keywords: Anandamide; 2-arachidonoylglycerol; fatty acid amide hydrolase; human disease; membrane transport; therapy

Document Type: Research article

DOI: http://dx.doi.org/10.2174/138955706776073466

Affiliations: 1: Department of Biomedical Sciences, University of Teramo, Piazza A. Moro 45, I-64100 Teramo, Italy.

Publication date: 2006-03-01

More about this publication?
  • The aim of Mini-Reviews in Medicinal Chemistry is to publish short reviews on the important recent developments in medicinal chemistry and allied disciplines.

    The scope of Mini-Reviews in Medicinal Chemistry will cover all areas of medicinal chemistry including developments in rational drug design, synthetic chemistry, bioorganic chemistry, high-throughput screening, combinatorial chemistry, drug targets, and natural product research and structure-activity relationship studies.

    Mini-Reviews in Medicinal Chemistry is an essential journal for every medicinal and pharmaceutical chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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