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Piceatannol 3'-O-glucoside Sale

(Synonyms: 白皮杉醇 3'-O-葡萄糖苷; Quzhaqigan) 目录号 : GC36914

Piceatannol 3'-O-glucoside 是 Rhubarb 的一种活性成分,通过抑制精氨酸酶 (Arginase) 活性激活内皮细胞一氧化氮合酶 (NO synthase),抑制 Arginase I 和 Arginase II,IC50 值分别为 11.22 μM 和 11.06 μM。

Piceatannol 3'-O-glucoside Chemical Structure

Cas No.:94356-26-0

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产品描述

Piceatannol 3'-O-glucoside, an active component of Rhubarb, activates endothelial nitric oxide (NO) synthase through inhibition of arginase activity with IC50s of 11.22 µM and 11.06 µM against arginase I and arginase II, respectively. NO synthase[1]IC50: 11.22 μM (Arginase I), 11.06 μM (Arginase II)[1]

Piceatannol 3'-O-glucoside (Piceatannol-3'-O-β-D-glucopyranoside; PG) is a potent component of stilbenes, inhibits the activity of arginase I and II prepared from mouse liver and kidney lysates, respectively, in a dose-dependent manner. In human umbilical vein endothelial cells, incubation of Piceatannol 3'-O-glucoside markedly blocks arginase activity and increases nitrite and nitrate (NOx) production, as measured by Griess assay. In liver lysates, incubation of different concentrations of Piceatannol 3'-O-glucoside significantly decreases arginase I activity (75±5% at 1 µM, 72±7% at 3 µM, 62±1% at 10 µM) compared to untreated control (100±9%). In kidney lysates, the residual arginase activities after incubation of 1, 3 and 10 µM Piceatannol 3'-O-glucoside are 75±6, 74±5, and 53±8%, respectively. Arginase activity is measured in the presence of different concentration of Piceatannol 3'-O-glucoside (from 0 to 120 µM) using liver lysate and kidney lysate. The 50% inhibitory concentrations (IC50) are 11.22 µM for the liver lysate and 11.06 µM for kidney lysate. The values are obtained using the software of Graphpad prizm 4.0. Piceatannol 3'-O-glucoside inhibits arginase activity and increases NO production in HUVECs. Piceatannol 3'-O-glucoside inhibits lipoxygenase activity upto 66% at the concentration of 100 µM and IC50 value is 69 µM[1].

In order to ascertain whether Piceatannol 3'-O-glucoside (PG) ameliorates vascular function in wild-type (WT) and atherogenic model mice [apolipoprotein E-null mice (ApoE-/-)] and to investigate the possible underlying mechanism. Preincubation of aortic vessels from WT mice fed a normal diet (ND) with Piceatannol 3'-O-glucoside attenuates vasoconstriction response to U46619 and phenylephrine (PE), while the vasorelaxant response to acetylcholine (Ach) is markedly enhanced in an endothelium-dependent manner. Piceatannol 3'-O-glucoside treatment attenuates the phenylephrine (PE)-dependent contractile response, and significantly improves the acetylcholine (Ach)-dependent vasorelaxation response in aortic rings from ApoE-/- mice fed a high-cholesterol diet (HCD). Piceatannol 3'-O-glucoside administration in the drinking water significantly reduces fatty streak formation in ApoE-/- mice fed an HCD[2].

[1]. Woo A, et al. Piceatannol-3'-O-beta-D-glucopyranoside as an active component of rhubarb activates endothelial nitric oxide synthase through inhibition of arginase activity. Exp Mol Med. 2010 Jul 31;42(7):524-32. [2]. Woo A, et al. Arginase inhibition by piceatannol-3'-O-β-D-glucopyranoside improves endothelial dysfunctionvia activation of endothelial nitric oxide synthase in ApoE-null mice fed a high-cholesterol diet. Int J Mol Med. 2013 Apr;31(4):803-10.

Chemical Properties

Cas No. 94356-26-0 SDF
别名 白皮杉醇 3'-O-葡萄糖苷; Quzhaqigan
Canonical SMILES O[C@H]([C@H]([C@@H]([C@@H](CO)O1)O)O)[C@@H]1OC2=CC(/C=C/C3=CC(O)=CC(O)=C3)=CC=C2O
分子式 C20H22O9 分子量 406.38
溶解度 Soluble in DMSO 储存条件 4°C, protect from light
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1 mM 2.4608 mL 12.3038 mL 24.6075 mL
5 mM 0.4922 mL 2.4608 mL 4.9215 mL
10 mM 0.2461 mL 1.2304 mL 2.4608 mL
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