Sigma-Aldrich Gpr55 Receptor Antagonist,

Assay

≥99% (HPLC)

Quality Level

100

Form

powder

Potency

1 μM IC₅₀

Manufacturer/Tradename

Calbiochem^®

Storage Condition

OK to freeze
protect from light

Color

off-white

Solubility

DMSO: 100 mg/mL

Storage Temp.

2-8°C

Smiles String

CC1=CC=C(C=C1)C2=NNC3=C2C(N(C3=O)C4=CC=C(C=C4)C(=O)O)C5=CC(=CC=C5)O

General Description

A selective antagonist of G protein-coupled receptor 55 (GPR55) that blocks lipid L-a-lysophosphatidylinositol (LPI, Cat. No. 440153)-induced GPR55 activation (IC₅₀= 1 µM) and downstream effects in HEK293 cells. Also shown to block the agonistic effect of LPI on GPR55- expressing yeast cells (~10 µM). Inhibits LPI-induced Ca2+ mobilization and ERK1/2 phosphorylation in HEK-GPR55 and HEK-CB1 cells. However, it does not affect basal Ca2+ mobilization and ERK1/2 activity. Blocks the GPR55-mediated NFAT and NF-kB activation and their nuclear translocation in HEK-GPR55 cells. Diminishes LPI-induced wound healing in GPR55-expressing primary human lung microvascular endothelial cells and reverses LPI-inhibited platelet aggregation (~10 µM). Also reported to inhibit the activity of phosphodiesterases PDE3A and PDE4B (pIC₅₀= 5 and 4.8, respectively).

Biochem/Physiol Actions

Primary Target
GPR55

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

Kargl, J., et al, 2013.J. Pharmacol. Exp. Ther. 346,54.CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany