PMID- 33932409 OWN - NLM STAT- MEDLINE DCOM- 20211124 LR - 20211124 IS - 1873-5177 (Electronic) IS - 0091-3057 (Linking) VI - 206 DP - 2021 Jul TI - Untapped endocannabinoid pharmacological targets: Pipe dream or pipeline? PG - 173192 LID - S0091-3057(21)00091-5 [pii] LID - 10.1016/j.pbb.2021.173192 [doi] AB - It has been established that the endogenous cannabinoid (endocannabinoid) system plays key modulatory roles in a wide variety of pathological conditions. The endocannabinoid system comprises both cannabinoid receptors, their endogenous ligands including 2-arachidonoylglycerol (2-AG), N-arachidonylethanolamine (anandamide, AEA), and enzymes that regulate the synthesis and degradation of endogenous ligands which include diacylglycerol lipase alpha (DAGL-alpha), diacylglycerol lipase beta (DAGL-beta), fatty acid amide hydrolase (FAAH), monoacylglycerol lipase (MAGL), alpha/beta hydrolase domain 6 (ABHD6). As the endocannabinoid system exerts considerable involvement in the regulation of homeostasis and disease, much effort has been made towards understanding endocannabinoid-related mechanisms of action at cellular, physiological, and pathological levels as well as harnessing the various components of the endocannabinoid system to produce novel therapeutics. However, drug discovery efforts within the cannabinoid field have been slower than anticipated to reach satisfactory clinical endpoints and raises an important question into the validity of developing novel ligands that therapeutically target the endocannabinoid system. To answer this, we will first examine evidence that supports the existence of an endocannabinoid system role within inflammatory diseases, neurodegeneration, pain, substance use disorders, mood disorders, as well as metabolic diseases. Next, this review will discuss recent clinical studies, within the last 5 years, of cannabinoid compounds in context to these diseases. We will also address some of the challenges and considerations within the cannabinoid field that may be important in the advancement of therapeutics into the clinic. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Wilkerson, Jenny L AU - Wilkerson JL AD - Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA. Electronic address: jenny.wilkerson@cop.ufl.edu. FAU - Bilbrey, Joshua A AU - Bilbrey JA AD - Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA. FAU - Felix, Jasmine S AU - Felix JS AD - Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA. FAU - Makriyannis, Alexandros AU - Makriyannis A AD - Center for Drug Discovery and Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA; Departments of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA. FAU - McMahon, Lance R AU - McMahon LR AD - Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA. Electronic address: lance.mcmahon@cop.ufl.edu. LA - eng PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20210429 PL - United States TA - Pharmacol Biochem Behav JT - Pharmacology, biochemistry, and behavior JID - 0367050 RN - 0 (Arachidonic Acids) RN - 0 (Cannabinoid Receptor Agonists) RN - 0 (Cannabinoids) RN - 0 (Endocannabinoids) RN - 0 (Glycerides) RN - 0 (Polyunsaturated Alkamides) RN - 0 (Receptor, Cannabinoid, CB1) RN - 0 (Receptor, Cannabinoid, CB2) RN - 8D239QDW64 (glyceryl 2-arachidonate) RN - UR5G69TJKH (anandamide) SB - IM MH - Animals MH - Arachidonic Acids/metabolism MH - Cannabinoid Receptor Agonists/pharmacology MH - Cannabinoids/metabolism/pharmacology MH - Drug Discovery/*methods MH - Endocannabinoids/*metabolism/pharmacology MH - Glycerides/metabolism MH - Humans MH - Inflammation/drug therapy MH - Metabolic Diseases/drug therapy MH - Mood Disorders/drug therapy MH - Nervous System Diseases/drug therapy MH - Pain/drug therapy MH - Polyunsaturated Alkamides/metabolism MH - Receptor, Cannabinoid, CB1/metabolism MH - Receptor, Cannabinoid, CB2/metabolism MH - Substance-Related Disorders/drug therapy OTO - NOTNLM OT - Addiction OT - Cannabinoid 2 receptor (CB(2)R) OT - Clinical trials OT - Drug dependence OT - Neuropathic pain OT - Preclinical EDAT- 2021/05/02 06:00 MHDA- 2021/11/25 06:00 CRDT- 2021/05/01 20:08 PHST- 2020/09/29 00:00 [received] PHST- 2021/04/18 00:00 [revised] PHST- 2021/04/21 00:00 [accepted] PHST- 2021/05/02 06:00 [pubmed] PHST- 2021/11/25 06:00 [medline] PHST- 2021/05/01 20:08 [entrez] AID - S0091-3057(21)00091-5 [pii] AID - 10.1016/j.pbb.2021.173192 [doi] PST - ppublish SO - Pharmacol Biochem Behav. 2021 Jul;206:173192. doi: 10.1016/j.pbb.2021.173192. Epub 2021 Apr 29.