RN-9893 is an antagonist of transient receptor potential vanilloid 4 (TRPV4; IC50s = 0.42 and 0.66 μM, respectively, for the human and rat receptors).1 It is selective for TRPV4 over TRPV1, TRPV3, and TRPM8 (IC50s = 10, >30, and 30 μM, respectively). RN-9893 reduces rat TRPV4 activity induced by 4α-phorbol 12,13-didecanoate or hypotonicity (IC50s = 0.57 and 2.1 μM, respectively, in cell free assays). |1. Wei, Z.L., Nguyen, M.T., O'Mahony, D.J., et al. Identification of orally-bioavailable antagonists of the TRPV4 ion-channel. Bioorg. Med. Chem. Lett. 25(18), 4011-4015 (2015).
Capsaicin is the primary active component of the heat and pain-eliciting lipid soluble fraction of the Capsicum pepper. Capsaicin signals are transduced by a heat-activated ion channel, the vanilloidreceptor 1 (VR1), or transient receptor potential vanilloid 1 (TRPV1). CAY10448 is an iodinated nonivamide, a potent capsaicin receptorantagonist with an IC50 value of approximately 10 nM.
Potent and selective TRPV1 antagonist. Blocks Ca2+ uptake by CHO cells expressing TRPV1 receptors and acid-induced Ca2+ uptake, respectively). Exhibits >4000-fold selectivity for TRPV1 over other TRP channels. Blocks capsaicin-induced flinch response and causes hyperthermia in rats. Orally available and non-CNS penetrant. Tamayo et al (2008) Design and synthesis of peripherally restricted transient receptor potential vanilloid 1 (TRPV1) antagonists. J.Med.Chem. 51 2744 PMID:18386885 |Gavva et al (2007) The vanilloidreceptor TRPV1 is tonically activated in vivo and involved in body temperature regulation. J.Neurosci. 27 3366 PMID:17392452
JTS-653 is a potent and selective in vitro and in vivo antagonist of transient receptor potential vanilloid 1 (TRPV1). It effectively attenuates chronic pain resistant to non-steroidal anti-inflammatory drugs.