BAY-1797 is a potent, orally active, and selective P2X4 antagonist, with an IC50 of 211 nM against human P2X4. BAY-1797 displays no or very weak activity on the other P2X ion channels. BAY-1797 shows anti-nociceptive and anti-inflammatory effects.
体外研究
BAY-1797 inhibits human, mouse, and rat P2X4 in 1321N1 cells with IC50s of 108 nM, 112 nM, and 233 nM, respectively.
BAY-1797 exerts no measurable activity on hERG and carbonic anhydrase II (both IC50>10 μM). BAY-1797 is also tested against a panel of off-targets, including G-protein coupled receptors (GPCRs), ion channels, kinases, and transporters at 10 μM. An inhibitory activity against the dopamine transporter (DAT, IC50 2.17 μM) was revealed as the only hit.
体内研究
BAY-1797 (12.5-50 mg/kg; p.o.) shows a significant induction of PGE2 levels in the inflamed paw in the mouse Complete Freund’s Adjuvant (CFA) inflammatory pain model.
BAY-1797 (50 mg/kg; once daily for multiple p.o. administrations) induces a significant reduction of the ipsilateral paw load 24 and 48 h after CFA injection.
BAY-1797 treatment shows the AUCnorm, Vss and t1/2 are 1.06 kg h/L, 3.67 L/kg and 2.64 hours, respectively.