Jts-653

JTS-653 is a highly potent and selective transient receptor potential vanilloid 1 (TRPV1) antagonist in vitro and in vivo. JTS-653 attenuates chronic pain refractory to non-steroidal anti-inflammatory agents[1].

Signaling Pathways >> Membrane Transporter/Ion Channel >> TRP Channel

Research Areas >> Inflammation/Immunology

Research Areas >> Neurological Disease

TRPV1

JTS-653 inhibits proton-induced activation of human and rat TRPV1 with IC50s of 0.320 and 0.347 nM, respectively[1]. JTS-653 blocks heat-induced inward currents in rat TRPV1 with an IC50 of 1.4 nM[1]. In the competition experiments, JTS-653 displaces [3H]RTX binding to human and rat TRPV1 in a concentration-related manner with Ki values of 11.44 and 4.40 nM, respectively[1]. JTS653 inhibits the 30 nM Capsaicin-induced activation of human and rat TRPV1 with IC50s of 0.236 and 0.247 nM, respectively[1].

JTS-653 significantly prevents Capsaicin-induced mechanical hyperalgesia at 1 mg/kg p.o. and attenuates Carrageenan-induced mechanical hyperalgesia at 0.3 mg/kg p.o. JTS-653 significantly attenuates Carrageenan-induced thermal hyperalgesia at 0.1 mg/kg p.o. and fully reverses at 0.3 mg/kg p.o. without affecting the volume of the Carrageenan-treated paw. JTS-653 shows a transient increase of body temperature at 0.3 mg/kg p.o.[1]. JTS-653 attenuates chronic pain refractory to non-steroidal anti-inflammatory agents in rats and mice including post-herpetic pain. JTS-653 (0.3, 1, 3 mg/kg) shows its effect in a dose-related manner, with statistical significance at 0.3 mg/kg or above[2]. Animal Model: Male Sprague-Dawley rats aged 5 to 6 weeks[2] Dosage: 0.3, 1, 3 mg/kg Administration: 0.5 h, 2 h, 8 h, 25 h Result: Partially attenuated mechanical hyperalgesia in the L5 spinal nerve ligation model in rats at 0.3 mg/kg. Increased the paw withdrawal threshold (PWT) of the ipsilateral paw at 0.5, 2, and 8 h after the administration and its effect disappeared by 25 h after administration. Showed its maximum effect with 1 mg/kg at 2 h after administration.

[1]. Yoshihiro Kitagawa, et al. Pharmacological characterization of (3S)-3-(hydroxymethyl)-4-(5-methylpyridin-2-yl)-N-[6-(2,2,2-trifluoroethoxy)pyridin-3-yl]-3,4-dihydro-2H-benzo[b][1,4]oxazine-8-carboxamide (JTS-653), a novel transient receptor potential vanilloid 1 antagonist. J Pharmacol Exp Ther. 2012 Aug;342(2):520-8.

[2]. Yoshihiro Kitagawa, et al. Orally administered selective TRPV1 antagonist, JTS-653, attenuates chronic pain refractory to non-steroidal anti-inflammatory drugs in rats and mice including post-herpetic pain. J Pharmacol Sci. 2013;122(2):128-37.