RO1138452

Research use only, not for human use.

RO1138452 is a selective and orally bioavailable antagonist of prostacyclin receptor (pKi: 8.3).

RO1138452 is a selective and orally bioavailable antagonist of prostacyclin receptor (pKi: 8.3). It antagonizes the carbaprostacyclin-induced activation of human neuroblastoma adenylate cyclase, blocking cyclic AMP accumulation in a dose-dependent manner. Likewise, it inhibits the binding of tritiated iloprost to rodent neuroblastoma cells with a Ki of about 1.5 nM. At levels between 2-20 mg/kg in rats, CAY10441 shows significant analgesic activity in standard antinociceptive assays.

RO1138452 is IP receptor antagonist. The pIC50 values of RO1138452 in attenuating cAMP accumulation is 7.0±0.07. Functional antagonism of RO1138452 is studied by measuring inhibition of carbaprostacyclin-induced cAMP accumulation in CHO-K1 cells stably expressing the human IP receptor. The antagonist affinity (pKi) of RO1138452 is 9.0±0.06. Selectivity profiles for RO1138452 are determined via a panel of receptor binding and enzyme assays. RO1138452 displays affinity at imidazoline2 (I2) (8.3) and platelet activating factor (PAF) (7.9) receptors. RO1138452 (10 pM-10 μM) added to cells concurrently with a fixed concentration of Taprostene (1 μM) prevents, in a concentration-dependent manner, the inhibition of CXCL9 and CXCL10 release, with p[A]50 (molar) values of -8.73±0.11 and -8.47±0.16 (p>0.05), respectively.

RO1138452 is a potent and selective antagonist for both human and rat IP receptors and that is possesses analgesic and anti-inflammatory potential. RO1138452 (1-10?mg/kg, i.v.) significantly reduces acetic acid-induced abdominal constrictions. RO1138452 (3-100?mg/kg, p.o.) significantly reduces carrageenan-induced mechanical hyperalgesia and edema formation. One?hour after administration of RO1138452 (5?mg/kg, i.v.) to rats, the total plasma concentration is 0.189 ?μg/mL, whereas the free plasma concentrations is calculated to be 0.009?μg/mL (28 nM).

CAY10441

Chromatin/Epigenetic

COX

prostacyclin receptor

Inflammation/Immunology

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221529-58-4

309.41

C19H23N3O

>98% (HPLC)

DMSO : 33.33 mg/mL. 107.72 mM; H2O : < 0.1 mg/mL

CC(C)Oc1ccc(Cc2ccc(NC3=NCCN3)cc2)cc1

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(-20℃)

With Ice Pack

≥ 2 years