JTV-519 hemifumarate (K201 hemifumarate) 是 Ca2+ 依赖性的肌质网 Ca2+ 刺激的 ATP 酶 (SERCA) 阻断剂。JTV-519 hemifumarate (K201 hemifumarate) 也是横纹肌中兰尼碱受体 (ryanodine receptors) 的部分激动剂。JTV-519 hemifumarate (K201 hemifumarate) 是一种心脏保护剂，具有抗心律失常作用。
货号:ajcx36780
CAS:1435938-25-2
分子式:C29H36N2O6S
分子量：482.64
溶解度:N/A
纯度：98%
存储：Store at -20°C
库存：现货

Background:

JTV-519 hemifumarate (K201 hemifumarate) is a Ca2+-dependent blocker of sarcoplasmic reticulum Ca2+-stimulated ATPase (SERCA) and a partial agonist of ryanodine receptors in striated muscle. Antiarrhythmic and cardioprotective properties[1][2].

JTV-519 (K201) inhibits inward Ca2+ movement into large unilamellar vesicles (LUV) caused by annexin V in a dose-dependent manner. In the presence of 50 nM annexin V and 400 μM Ca2+, 3 μM JTV-519 shows significant inhibition of Ca2+ movement due to annexin V, and 50% inhibition is achieved at 25 μM K201[2].

JTV-519 (0.5mg/kg/h, i.v., 2 h before the surgery) improves cardiac function in CLP mice, where the fractional shortening (FS) and ejection fraction (EF) are significantly increased as compared with CLP mice without JTV-519 treatment[3].

[1]. Darcy YL, et al. K201 (JTV519) is a Ca2+-Dependent Blocker of SERCA and a Partial Agonist of Ryanodine Receptors in Striated Muscle. Mol Pharmacol. 2016 Aug;90(2):106-15.
[2]. Kaneko N, et al. Inhibition of annexin V-dependent Ca2+ movement in large unilamellar vesicles by K201, a new 1,4-benzothiazepine derivative. Biochim Biophys Acta. 1997 Nov 13;1330(1):1-7.
[3]. Yang J, et al. Toll-like receptor 4-induced ryanodine receptor 2 oxidation and sarcoplasmic reticulum Ca2+ leakage promote cardiac contractile dysfunction in sepsis. J Biol Chem. 2018 Jan 19;293(3):794-807.