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2-Arachidonoyl glycerol-d8 (2-AG-d8) contains eight deuterium atoms at the 5, 6, 8, 9, 11, 12, 14, and 15 positions of the arachidonic acid moiety. It is intended for use as an internal standard for the quantification of 2-AG by GC- or LC-mass spectrometry. 2-AG is an endogenous agonist of the CB1 receptor.1,2 Unlike anandamide, 2-AG is present at relatively high levels in the central nervous system; it is the most abundant molecular species of monoacylglycerol found in rat brain.1,3 Formation of 2-AG is calcium-dependent and is mediated by the activities of phospholipase C and diacylglycerol lipase.1 2-AG acts as a full agonist at the CB1 receptor. At a concentration of 0.3 nM, 2-AG induces a rapid, transient increase in intracellular free calcium in NG108-15 neuroblastoma X glioma cells through a receptor-dependent mechanism.4
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1
Stella, N., Schweitzer, P., Piomelli, D. A second endogenous cannabinoid that modulates long-term potentiation. Nature 388 773-778 (1997).
2
Sugiura, T., Kodaka, T., Nakane, S., et al. Evidence that the cannabinoid CB1 receptor is a 2-arachidonoylglycerol receptor. Structure-activity relationship of 2-arachidonoylglycerol, ether-linked analogues, and related compounds. J Biol Chem 274 2794-2801 (1999).
3
Kondo, S., Kondo, H., Nakane, S., et al. 2-Arachidonoylglycerol, an endogenous cannabinoid receptor agonist: Identification as one of the major species of monoacylglycerols in various rat tissues, and evidence for its generation through Ca2+-dependent and -independent mechanisms. FEBS Lett 429 152-156 (1998).
4
Sugiura, T., Kodaka, T., Kondo, S., et al. Is the cannabinoid CB1 receptor a 2-arachidonoylglycerol receptor? Structural requirements for triggering a Ca2+ transient in NG108-15 cells. J Biochem 122 890-895 (1997).
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