EP4 receptor antagonist 1 is a highly potent and selective competitive prostanoid EP4 receptor antagonist for cancer immunotherapy. EP4 receptor antagonist 1 inhibits human and mouse EP4 receptor with IC50s of 6.1 nM and 16.2 nM, respectively. IC50s >10 μM for human EP1, EP2,and EP3 receptors[1].
The antagonistic effect of EP4 receptor antagonist 1 (Compounds 59) on human EP4 in calcium flux assay with an IC50 of 6.1±0.2 nM in CHO-Gα16 cells overexpressing human EP4 receptor. The antagonistic effect of EP4 receptor antagonist 1 on human EP4 in calcium flux assay with an IC50 of 16.2±1.7 nM in CHO-Gα16 cells overexpressing mouse EP4 receptor[1].
EP4 receptor antagonist 1 dose dependently inhibits PGE2-stimulated cAMP accumulation in HEK293-EP4 cells with an IC50 of 18.7±0.6 nM. EP4 receptor antagonist 1 dose-dependently inhibits the activity of the CRE reporter in HEK293 cells with an IC50 of 5.2±0.4 nM.EP4 receptor antagonist 1 dose-dependently inhibits PGE2-stimulated β-arrestin recruitment in HEK293-EP4 cells with an IC50 of 0.4±0.1 nM[1].
EP4 receptor antagonist 1 (1 nM-10 μM) reverses PGE2-induced ERK phosphorylation in a concentration-dependent manner[1].
EP4 receptor antagonist 1 (16, 50, and 150 mg/kg; orally; once daily for two weeks) causes significant inhibition of tumor growth in BALB/c female mice. No significant body weight loss is found in any mouse cohorts. EP4 receptor antagonist 1 is well tolerated in mice at the tested dosage[1].
EP4 receptor antagonist 1 (1 mg/kg; intravenously) demonstrates moderate clearance (CL=1.7 L/h/kg) in mice with a corresponding favorable half-life (t1/2) of 4.1 h. EP4 receptor antagonist 1 (5 mg/kg; orally) exhibits good bioavailability (F=48.0%) in mice with a corresponding favorable half-life (t1/2) of 4.7 h[1].
| Catalog Number | I016898 |
| CAS Number | 2287259-07-6 |
| Synonyms | 4-[(1S)-1-[[5-[(E)-prop-1-enyl]-3-[[4-(trifluoromethyl)phenyl]methyl]triazole-4-carbonyl]amino]ethyl]benzoic acid |
| Molecular Formula | C23H21F3N4O3 |
| Purity | ≥95% |
| InChI | InChI=1S/C23H21F3N4O3/c1-3-4-19-20(21(31)27-14(2)16-7-9-17(10-8-16)22(32)33)30(29-28-19)13-15-5-11-18(12-6-15)23(24,25)26/h3-12,14H,13H2,1-2H3,(H,27,31)(H,32,33)/b4-3+/t14-/m0/s1 |
| InChIKey | ZTWUZRMXAVDXJV-XGACYXMMSA-N |
| SMILES | CC=CC1=C(N(N=N1)CC2=CC=C(C=C2)C(F)(F)F)C(=O)NC(C)C3=CC=C(C=C3)C(=O)O |
| Reference | [1]. Yang JJ, et al. Discovery and Characterization of 1H-1,2,3-Triazole Derivatives as Novel Prostanoid EP4 Receptor Antagonists for Cancer Immunotherapy. J Med Chem. 2020 Jan 23;63(2):569-590. |
