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BQ-123
本产品不向个人销售，仅用作科学研究，不用于任何人体实验及非科研性质的动物实验。
BQ-123图片
CAS NO:136553-81-6
包装:500μg
市场价:1271元

产品介绍
BQ-123 是一种有效的选择性内皮素 A (ETA) 受体拮抗剂，IC50 为 7.3 nM，Ki 为 25 nM。
Cas No.136553-81-6
别名环(D-ALPHA-天冬氨酰-L-脯氨酰-D-缬氨酰-L-亮氨酰-D-色氨酰)
化学名2-((3R,6S,9S,12S,17aS)-9-((1H-indol-3-yl)methyl)-6-isobutyl-3-isopropyl-1,4,7,10,13-pentaoxohexadecahydro-1H-pyrrolo[1,2-a][1,4,7,10,13]pentaazacyclopentadecin-12-yl)acetic acid
Canonical SMILESO=C([C@H]1N(C([C@H](CC(O)=O)NC([C@H](CC2=CNC3=CC=CC=C23)NC4=O)=O)=O)CCC1)N[C@@H](C(N[C@H]4CC(C)C)=O)C(C)C
分子式C31H42N6O7
分子量611
溶解度DMF: 1 mg/ml,DMSO: 20 mg/ml,DMSO:PBS (pH 7.2) (1:2): 0.33 mg/ml,PBS (pH 7.2): slightly
储存条件Desiccate at -20°C
General tipsFor obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.
Shipping ConditionEvaluation sample solution : ship with blue ice
All other available size: ship with RT , or blue ice upon request
产品描述

BQ-123 is a potent and selective antagonist of ETA endothelin receptor with Ki values of 1.4 and 1500 nM for ETA and ETB receptors, respectively.

Endothelin receptor is a G protein-coupled receptor. ETA receptor increases intracellular-free Ca2+. Also, Activation of ETA receptor increases vasoconstriction and blood pressure.

BQ-123 is a selective ETA receptor antagonist. In the ETA-expressing cells, BQ123 (10-6 M) inhibited endothelin-1 (ET-1) (10-6 M)-induced [Ca2+]i increase by 95% [1]. In rat vascular smooth muscle cells (VSMC), BQ-123 inhibited ET-1 receptor binding, cellular contraction, [Ca2+ ]i mobilization, [3H]thymidine incorporation, MAP kinase activation and MTT reduction induced by ET-1. However, BQ-123 didn’t inhibit angiotensin II (Ang II)- and arginine vasopressin (AVP)-induced increases in MAP kinase activity and [Ca2+]i mobilization [2].

In spontaneously hypertensive rats (SHR), renin hypertensive rats and normotensive rats, BQ-123 (16 nM/kg/min) reduced mean arterial pressure in a dose-dependent way in SHR. Also, BQ-123 lowered blood pressure in both renin hypertensive rats and normotensive rats [3]. In a kidney transplantation rat model with reperfusion injury, BQ-123 prevented reperfusion injury and inhibited the synthesis and release of ET-1,2 [4].

References:
[1].  Sakamoto A, Yanagisawa M, Sawamura T, et al. Distinct subdomains of human endothelin receptors determine their selectivity to endothelinA-selective antagonist and endothelinB-selective agonists. J Biol Chem, 1993, 268(12): 8547-8553.
[2].  Guo X, Okada K, Fujita N, et al. Inhibitory effect of BQ-123 on endothelin-1-stimulated mitogen-activated protein kinase and cell growth of rat vascular smooth muscle cells. Hypertens Res, 1996, 19(1): 23-30.
[3].  Douglas SA, Gellai M, Ezekiel M, et al. BQ-123, a selective endothelin subtype A-receptor antagonist, lowers blood pressure in different rat models of hypertension. J Hypertens, 1994, 12(5): 561-567.
[4].  Büyükgebiz O, Aktan AO, Haklar G, et al. BQ-123, a specific endothelin (ETA) receptor antagonist, prevents ischemia-reperfusion injury in kidney transplantation. Transpl Int, 1996, 9(3): 201-207.