AMG-517是一种有效的，选择性的TRPV1拮抗剂，抑制TRPV1的Capsaicin， Proton和热激活，IC50分别为0.76 nM， 0.62 nM和1.3 nM。AMG 517抑制 CAP-(500 nM), 酸 (pH 5.0),或热(45°C) 诱导的⁴⁵Ca²⁺流入人体表达TRPV1的CHO细胞， IC50分别为0.76 nM, 0.62 nM 和 1.3 nM。AMG 517作用于表达TRPV1的细胞，抑制Capsaicin, Proton, 和热诱导的内向电流。AMG 517作用于大鼠背根神经节神经元，抑制Capsaicin诱导的天然TRPV1激活，IC50值为0.68 nM。

98%

Store at -20℃ for one year（Powder）；Store at 2-4℃ for two weeks；Store at -20℃ for six months after dissolution.

AMG 517

DMSO ：43 mg/mL (100 mM)

TRPV1

AMG 517 inhibits CAP- (500 nM), acid- (pH 5.0), or heat-(45 °C) induced 45Ca2+ influx into human TRPV1-expressing CHO Cells with IC50 of 0.76 nM, 0.62 nM and 1.3 nM. AMG 517 blocks capsaicin-, proton-, and heat-induced inward currents in TRPV1-expressing cells similarly. AMG 517 inhibits native TRPV1 activation by capsaicin in rat dorsal root ganglion neurons with an IC50 value of 0.68 nM. AMG 517 is a competitive antagonist of both rat and human TRPV1 with dissociation constant (Kb) values of 4.2 and 6.2 nM, respectively. AMG 517 is a highly selective TRPV1 antagonist. The IC50 value for AMG 517 is >20 μM against 2-APB-activated TRPV2 and TRPV3, 4-αPDD-activated TRPV4, allyl isothiocyanate-activated TRPA1, and icilin-activated TRPM8 in cell-based assays that measure agonist-induced increases in intracellular calcium in CHO cells recombinantly expressing the appropriate TRP channel.

Oral administration of AMG 517 produces a dose-dependent increase in plasma concentrations, it also produces a dose-dependent decrease in the number of flinches induced by capsaicin treatment. The minimally effective dose (MED), based on a statistically significant difference in number of flinches from the vehicle versus capsaicin-administered group, is 0.3 mg/kg for AMG 517. The corresponding plasma concentrations are 90 to 100 ng/mL for AMG 517. AMG 517 (3 mg/kg) exhibits significant reductions in capsaicin-induced flinch up to 24 h after dosing. AMG 517 blocks thermal hyperalgesia in CFA model of pain. AMG 517 elicits hyperthermia in rodents, dogs and monkeys but not in TRPV1 knockout mice. Interestingly, hyperthermia evoked by TRPV1-selective antagonists is attenuated after repeated dosing of these antagonists to rats, dogs and monkeys, and TRPV1 knockout mice does not exhibit an impairment of thermoregulation.