PMID- 20649563 OWN - NLM STAT- MEDLINE DCOM- 20101130 LR - 20211020 IS - 1476-5381 (Electronic) IS - 0007-1188 (Print) IS - 0007-1188 (Linking) VI - 160 IP - 7 DP - 2010 Aug TI - Endocannabinoid-like N-arachidonoyl serine is a novel pro-angiogenic mediator. PG - 1583-94 LID - 10.1111/j.1476-5381.2010.00841.x [doi] AB - BACKGROUND AND PURPOSE: N-arachidonoyl serine (ARA-S) is a recently identified endocannabinoid-like lipid with weak affinity for the fully characterized cannabinoid receptors (CB(1) and CB(2)) and the transient receptor potential vanilloid receptor 1 (TRPV-1). ARA-S induces vasodilatation and shows vasoprotective potential via activation of key signalling pathways in endothelial cells. Based on these findings, the effect of ARA-S on endothelial functions was further studied. EXPERIMENTAL APPROACH: Primary human dermal microvascular endothelial cells (HMVEC) were used to investigate effects of ARA-S (0-10 microM) on certain endothelial functions, using cell proliferation, migration and wound repair models in vitro, and angiogenesis assays in vitro and ex vivo. Selective CB receptor antagonists and specific siRNAs were deployed to block individual CB receptors. KEY RESULTS: We found that ARA-S stimulated angiogenesis and endothelial wound healing through induction of vascular endothelial growth factor C and its cognate receptor expression in primary HMVEC. Moreover, knock-down of G protein-coupled receptor 55 (GPR55) partly inhibited ARA-S-induced signal transduction and endothelial functions. CONCLUSIONS AND IMPLICATIONS: Our results indicate that ARA-S is a pro-angiogenic factor in addition to a vessel dilator. The GPR55 receptor may serve as one target of ARA-S. FAU - Zhang, X AU - Zhang X AD - Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA. FAU - Maor, Y AU - Maor Y FAU - Wang, J F AU - Wang JF FAU - Kunos, G AU - Kunos G FAU - Groopman, J E AU - Groopman JE LA - eng GR - R01 DA015008/DA/NIDA NIH HHS/United States GR - 1R01 DA15008-01/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - England TA - Br J Pharmacol JT - British journal of pharmacology JID - 7502536 RN - 0 (Arachidonic Acids) RN - 0 (Cannabinoid Receptor Modulators) RN - 0 (Endocannabinoids) RN - 0 (N-arachidonoyl L-serine) RN - 0 (Receptor, Cannabinoid, CB1) RN - 0 (Receptor, Cannabinoid, CB2) RN - 452VLY9402 (Serine) SB - IM CIN - Br J Pharmacol. 2010 Aug;160(7):1580-2. PMID: 20649562 MH - Animals MH - Arachidonic Acids/*pharmacology MH - Cannabinoid Receptor Modulators/*pharmacology MH - Cattle MH - Cell Line MH - Cell Movement/drug effects MH - Cell Proliferation/drug effects MH - Chick Embryo MH - Chorioallantoic Membrane/blood supply/drug effects MH - Dose-Response Relationship, Drug MH - *Endocannabinoids MH - Endothelial Cells/drug effects/metabolism MH - Endothelium, Vascular/cytology/drug effects/metabolism MH - Humans MH - Neovascularization, Physiologic/*drug effects MH - Receptor, Cannabinoid, CB1/antagonists & inhibitors/metabolism MH - Receptor, Cannabinoid, CB2/antagonists & inhibitors/metabolism MH - Serine/*analogs & derivatives/pharmacology MH - Wound Healing/drug effects PMC - PMC2936832 EDAT- 2010/07/24 06:00 MHDA- 2010/12/14 06:00 PMCR- 2011/08/01 CRDT- 2010/07/24 06:00 PHST- 2010/07/24 06:00 [entrez] PHST- 2010/07/24 06:00 [pubmed] PHST- 2010/12/14 06:00 [medline] PHST- 2011/08/01 00:00 [pmc-release] AID - BPH841 [pii] AID - 10.1111/j.1476-5381.2010.00841.x [doi] PST - ppublish SO - Br J Pharmacol. 2010 Aug;160(7):1583-94. doi: 10.1111/j.1476-5381.2010.00841.x.