Darusentan_product_DataBase

Bioactivity

Darusentan (Lu-135252) is a selective endothelin receptor A (ET-A) receptor antagonist, which binds with a Ki of 1.4 nM to the ET-A receptor and a Ki of 184 nM to ET-B receptor, respectively with a 100-fold selectivity for ETA rather than ETB receptors[1]. Darusentan competes for radiolabeled endothelin binding in rat aortic vascular smooth muscle cells (RAVSMs) membranes with single-site kinetics, exhibiting a Ki of 13 nM[2].

Invitro

Darusentan ((S)-Darusentan) competes for radiolabeled endothelin binding in rat aortic vascular smooth muscle cells (RAVSMs) membranes with single-site kinetics, exhibiting a Ki=13 nM. In isolated endothelium-denuded rat aortic rings, Darusentan inhibits endothelin-induced vascular contractility with a pA2=8.1±0.14. Darusentan ( 0.001-1μM) inhibits ET-1-induced signaling in cultured RAVSMs[2].

In Vivo

Darusentan (30 mg/kg per day orally for weeks 3 and 4) reverses aortic alterations produced by infusion of Norepinephrine (2.5 μg/kg per min subcutaneously for 2 and 4 weeks) in male Sprague Dawley rats[3]. Animal Model:

Name

Darusentan

CAS

171714-84-4

Formula

C22H22N2O6

Molar Mass

410.42

Appearance

Solid

Transport

Room temperature in continental US; may vary elsewhere.

Storage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

Reference

[1]. Frank Enseleit, et al. Darusentan, a selective endothelin A receptor antagonist, for the oral treatment of resistant hypertension. Ther Adv Cardiovasc Dis. 2010 Aug;4(4):231-40. [2]. Liang F, et al. Darusentan is a potent inhibitor of endothelin signaling and function in both large and small arteries. Can J Physiol Pharmacol. 2010 Aug;88(8):840-9. [3]. H H Dao, et al. Norepinephrine-induced aortic hyperplasia and extracellular matrix deposition are endothelin-dependent. J Hypertens. 2001 Nov;19(11):1965-73.

PeptideDB

Darusentan

CAS: 171714-84-4 F: C22H22N2O6 W: 410.42