IPA-3 是一种选择性的，ATP 非竞争的 PAK1 抑制

IPA-3 is a selective non-ATP competitive PAK1 inhibitor with IC₅₀ of 2.5 μM, and shows no inhibition to group II PAKs (PAKs 4-6).

IPA-3 inhibits Pak1 activation in part by binding covalently to the regulatory domain of Pak1. IPA-3 binds Pak1 covalently in a time- and temperature-dependent manner. IPA-3 prevents binding of the Pak1 activator Cdc42. IPA-3 binds directly to the Pak1 autoregulatory domain. IPA-3 reversibly inhibits PMA-induced membrane ruffling in cells^[1]. IPA-3 (2 µM, 5 µM or 20 µM) reduces cell spreading in human primary Schwann and schwannoma cells. IPA-3 treatment significantly reduces the number of adherent Schwann and schwannoma cells in a dose-dependent manner^[2]. IPA-3 is a non ATP-competitive, allosteric inhibitor of p21-activated kinase 1 (Pak1). PIR3.5 is the control compound of IPA-3. IPA-3 prevents Cdc42-stimulated Pak1 autophosphorylation on Thr423. IPA-3 also prevents sphingosine-dependent Pak1 autophosphorylation. IPA-3 does not target exposed cysteine residues on Pak1. The disulfide bond of IPA-3 is critical for inhibition of Pak1 and in vitro reduction by the reducing agent dithiothreitol (DTT) abolishes Pak1 inhibition by IPA-3. IPA-3 inhibits activation of Pak1 by diverse activators, but does not inhibit preactivated Pak1. IPA-3 inhibits PDGF-stimulated Pak activation in mouse embryonic fibroblasts^[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

350.45

Solid

C₂₀H₁₄O₂S₂

42521-82-4

Room temperature in continental US; may vary elsewhere.

DMSO : 41.67 mg/mL (118.90 mM; ultrasonic and warming and heat to 60°C)

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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：

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• 1.

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

  Solubility: 2.5 mg/mL (7.13 mM); Clear solution; Need ultrasonic

   

• 2.

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

  Solubility: 2.5 mg/mL (7.13 mM); Suspended solution; Need ultrasonic

   

• 3.

  请依序添加每种溶剂： 10% DMSO 90% corn oil

  Solubility: ≥ 2.5 mg/mL (7.13 mM); Clear solution

• [1]. Viaud J, et al. An allosteric kinase inhibitor binds the p21-activated kinase autoregulatory domain covalently. Mol Cancer Ther. 2009 Sep;8(9):2559-65.  [Content Brief]

  [2]. Flaiz C, et al. PAK kinase regulates Rac GTPase and is a potential target in human schwannomas. Exp Neurol. 2009 Jul;218(1):137-44.  [Content Brief]

  [3]. Deacon SW, et al. An isoform-selective, small-molecule inhibitor targets the autoregulatory mechanism of p21-activated kinase. Chem Biol. 2008 Apr;15(4):322-31  [Content Brief]