Potent, allosteric GPR55 antagonist
Anandamide-d11 is deuterium labeled Anandamide. Anandamide is an immune modulator in the central nervous system acts via not only cannabinoid receptors (CB1 and CB2) but also other targets (e.g., GPR18/GPR55)[1][2].
Anandamide is an immune modulator in the central nervous system acts via not only cannabinoid receptors (CB1 and CB2) but also other targets (e.g., GPR18/GPR55).
CID 16020046 is a potent and selective GPR55(LPI receptor) antagonist; inhibitsGPR55 constitutive activity with IC50 of 0.15 uM.IC50 value: 0.15 uM [1]Target: GPR55 antagonistIn yeast cells expressing human GPR55, CID16020046 antagonized agonist-induced receptor activation. In human embryonic kidney(HEK293) cells stably expressing human GPR55, the compound behaved as an antagonist on LPI-mediated Ca2+ release and extracellular signal-regulated kinases activation, but not in HEK293 cells expressing cannabinoid receptor 1 or 2.CID16020046 concentration dependently inhibited LPI-induced activation of nuclear factor of activated T-cells (NFAT), nuclear factor k of activated B cells (NF-kB) and serum response element, translocation of NFAT and NF-kB, and GPR55 internalization. It reduced LPI-induced wound healing in primary human lung microvascular endothelial cells and reversed LPI-inhibited platelet aggregation.
ML-191 is an antagonist of GPR55. It inhibits GPR55 signaling induced by lysophosphatidylinositol (EC50=1.076 µM in U2OS cells overexpressing GPR55). ML-191 inhibits LPI-induced phosphorylation of ERK1/2 (IC50=328 nM) and receptor-dependent translocation of PKCβII when used at a concentration of 30 µM[1].
ML193 (CID 1261822) is a potent, selective GPR55 antagonist with IC50 of 221 nM, shows >27-, >145- and >145-fold selectivity for GPR55 over CB1, GPR35 and CB2, respectively; reduces neuronal differentiation in vitro, increases anxiety-like behaviors while causing locomotor impairment by i.c.v. injection at the doses of 0.1 and 1 μg/rat.
Tocrifluor 1117 (T1117), a fluorescent form of the cannabinoid CB1 receptor antagonist AM251, is a selective fluorescent GPR55 ligand. Tocrifluor 1117 is a potent tool for identifying the cellular location of cannabinoid receptors (including GPR55 in living tissues) (Ex/Em=543/590 nm)[1][2].
L-α-lysophosphatidylinositol Soy sodium is an endogenous ligand of GPR55. L-α-lysophosphatidylinositol Soy sodium is an endogenous lysophospholipid and endocannabinoid neurotransmitter that belongs to the class of lysophospholipids[1].
ML-184 (ML184) is a potent, selective GPR55 agonist with EC50 of 263 nM, >120-fold, 83-fold, and 57-fold selectivity against GPR35, CB1 and CB2; shows activity in activating the downstream responses of ERK phosphorylation and PKC β II translocation.
ML192 is a selective ligand antagonist of GPR55. ML192 inhibits the β-arrestin trafficking, ERK1/2 phosphorylation and PKCβII translocation[1].
Tetrahydromagnolol (Magnolignan), a main metabolite of Magnolol, is a potent and selective cannabinoid CB2 receptor agonist with an EC50 of 170 nM and a Ki of 416 nM. Tetrahydromagnolol possesses 20-fold more selective for CB2 receptor than CB1 receptor. Tetrahydromagnolol is also a weak GPR55 receptor antagonist[1].