Rostafuroxin (Synonyms:PST 2238)
目录号 : KM4611 CAS No. : 156722-18-8 纯度 : 98%

Rostafuroxin (PST 2238) 是一种洋地黄毒苷衍生物,一种口服有效的 Na+,K+-ATPase (ATP1A1) 抑制剂。Rostafuroxin 与 ATP1A1 胞外域特异性结合,并阻断呼吸道合胞病毒 (RSV) 触发的 EGFR Tyr845 磷酸化。Rostafuroxin 具有抗高血压和抗 RSV 活性。

规格 价格 是否有货 数量
5mg
In-stock
10mg
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50mg
In-stock
100mg
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200mg 询价 In-stock
500mg 询价 In-stock

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生物活性

Rostafuroxin (PST 2238), a digitoxigenin derivative, is an orally active and potent Na,K-ATPase (ATP1A1) antognist. Rostafuroxin binds specifically to the ATP1A1 extracellular domain and blocks respiratory syncytial virus (RSV)-triggered EGFR Tyr845 phosphorylation. Rostafuroxin has antihypertensive and anti-RSV activity.

体外研究

Rostafuroxin (PST 2238) competitively inhibits Ouabain binding and signaling. Rostafuroxin antagonizes the molecularand functional effects of Ouabain by reversing the ouabain-induced, Src-dependent Na,K-ATPase phosphorylation and activation.
Rostafuroxin (0.125-128 μM; for 24 h post treatment) has less than 20% reduction in cell viability in A549 cells and HSAEC. Rostafuroxin inhibits the expression of RSV-GFP in HSAEC (IC50=1.8 μM) and A549 cells (IC50=14.8 μM).
Rostafuroxin displaced [H]Ouabain from the dog kidney Na,K-ATPase receptor (IC50=1.5 nM), is devoid of cardiac inotropic activity in isolated guinea pig atria, and shows no affinity up to 10 M with general (R1, R2, a1, a2, A1, A2, M1, M2, H1, H2, 5-HT1, 5-HT2, Ca2+ channels, TXA2/PGH2, PAF, GABAA, GABAB, DA-NE-5-HT uptake, glutammate,glycine, benzodiazepine) and hormonal (estrogenic, progestinic, androgenic, mineralcorticoid) receptors.

体内研究

Rostafuroxin (PST 2238; 1 mg/kg/day; gavage; for 3 weeks) decreases SBP and improves acetylcholine-induced relaxation.

Animal Model: Male 7-week-old Wistar rats
Dosage: 1 mg/kg
Administration: Gavage; daily; for 3 weeks
Result: Decreased SBP, improved acetylcholine-induced relaxation via enhanced nitric oxide synthesis and bioavailability, decreased superoxide anion generation from NAD(P)H oxidase and cyclooxygenase-2 and reduced cytoplasmic tyrosine kinase Src phosphorylation.
分子式
C23H34O4
分子量
374.51
CAS号
156722-18-8
运输条件

Room temperature in continental US; may vary elsewhere.

储存方式
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
溶解性数据
In Vitro: 

DMSO : ≥ 50 mg/mL (133.51 mM)

* "≥" means soluble, but saturation unknown.

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.6702 mL 13.3508 mL 26.7016 mL
5 mM 0.5340 mL 2.6702 mL 5.3403 mL
10 mM 0.2670 mL 1.3351 mL 2.6702 mL
*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。
储备液的保存方式和期限:-80°C, 6 months; -20°C, 1 month。-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:

——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用; 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

  • 1.

    请依序添加每种溶剂: 10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.5 mg/mL (6.68 mM); Clear solution

    此方案可获得 ≥ 2.5 mg/mL (6.68 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;向上述体系中加入50 μL Tween-80,混合均匀;然后继续加入 450 μL生理盐水定容至 1 mL。

  • 2.

    请依序添加每种溶剂: 10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.5 mg/mL (6.68 mM); Clear solution

    此方案可获得 ≥ 2.5 mg/mL (6.68 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中,混合均匀。

  • 3.

    请依序添加每种溶剂: 10% DMSO    90% corn oil

    Solubility: ≥ 2.5 mg/mL (6.68 mM); Clear solution

    此方案可获得 ≥ 2.5 mg/mL (6.68 mM,饱和度未知) 的澄清溶液,此方案不适用于实验周期在半个月以上的实验。

    以 1 mL 工作液为例,取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中,混合均匀。

临床试验
The molarity calculator equation
Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)
The dilution calculator equation
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2
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