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Reversible inhibitors of fatty acid amide hydrolase that promote analgesia: evidence for an unprecedented combination of potency and selectivity

Academic Article
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Overview

authors

  • Lichtman, A. H.
  • Leung, D.
  • Shelton, C. C.
  • Saghatelian, Alan
  • Hardouin, C.
  • Boger, Dale
  • Cravatt, Benjamin

publication date

  • November 2004

journal

  • Journal of Pharmacology and Experimental Therapeutics  Journal

abstract

  • Fatty acid amide hydrolase (FAAH) is the primary catabolic regulator of several bioactive lipid amides in vivo, including the endogenous cannabinoid anandamide and the sleep-inducing substance oleamide. Inhibitors of FAAH are considered a potential therapeutic approach for the treatment of several nervous system disorders, including pain, anxiety, and insomnia. However, for FAAH inhibitors to achieve clinical utility, they must not only display efficacy in vivo but also selectivity for this enzyme relative to the numerous other serine hydrolases present in mammalian proteomes. Here, we report a general strategy for evaluating the pharmacological activity and target specificity of FAAH inhibitors and its implementation to develop the first class of selective reversible inhibitors of this enzyme that are highly efficacious in vivo. Using a series of functional proteomics, analytical chemistry, and behavioral pharmacology assays, we have identified a class of alpha-keto-heterocycles that show unprecedented selectivity for FAAH relative to other mammalian hydrolases, and, when administered to rodents, raise central nervous system levels of anandamide and promote cannabinoid receptor 1-dependent analgesia in several assays of pain sensation. These studies provide further evidence that FAAH may represent an attractive therapeutic target and describe a general route by which inhibitors of this enzyme can be optimized to achieve exceptional potency, selectivity, and efficacy in vivo.

subject areas

  • Amidohydrolases
  • Analgesia
  • Animals
  • Arachidonic Acids
  • Drug Synergism
  • Endocannabinoids
  • Enzyme Inhibitors
  • Mice
  • Mice, Inbred C57BL
  • Mice, Inbred ICR
  • Polyunsaturated Alkamides
  • Proteomics
  • Pyridines
  • Receptor, Cannabinoid, CB1
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Identity

International Standard Serial Number (ISSN)

  • 0022-3565

Digital Object Identifier (DOI)

  • 10.1124/jpet.104.069401

PubMed ID

  • 15229230
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Additional Document Info

start page

  • 441

end page

  • 448

volume

  • 311

issue

  • 2

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