Wortmannin

製品コードS2758 バッチS275802

化学情報

	Synonyms	KY 12420, SL-2052, BRN 0067676, NSC 627609	Storage (From the date of receipt)	3 years -20°C powder 1 years -80°C in solvent
	化学式	C₂₃H₂₄O₈
	分子量	428.43	CAS No.	19545-26-7
Solubility (25°C)*	体外	DMSO	86 mg/mL (200.73 mM)
		Water	Insoluble
		Ethanol	Insoluble
* <1 mg/ml means slightly soluble or insoluble. * Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

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生物活性

製品説明	Wortmannin is the first described PI3K inhibitor with IC50 of 3 nM in a cell-free assay, with little selectivity within the PI3K family. Wortmannin blocks autophagosome formation and potently inhibits DNA-PK/ATM with IC50 of 16 nM and 150 nM in cell-free assays. Wortmannin also inhibits PLK1 activity.
in vitro	The inhibition of MLCK by Wortmannin is not affected by calmodulin or peptide substrat, while reduced by high concentration of ATP. Wortmannin directly interacts with the catalytic domain of MLCK and leads to an irreversible loss of the enzyme activity. Wortmannin has no inhibitory to cAMP-dependent protein kinase, cGMP-dependent protein kinase, and calmodulin-dependent protein kinase II, and has little effect on protein kinase C activity. ^[1] Wortmannin inhibits N-formylmethionyl-leucylphenylalanine (fMLP)-stimulated PtdInsP3 (phosphatidylinositol 3,4,5-trisphosphate) formation with IC50 of 5 nM and this inhibition is completely abolished when pretreated with 100 nM Wortmannin in human neutrophils, with increased PtdInsP2 levels and no effects on cellular PtdInsP and PtdIns contents. Wortmannin could develop oscillatory changes in F-actin content and does not inhibit fMLP-stimulated actin polymerization in neutrophils. ^[2] Wortmannin irreversibly inhibits phosphatidylinositol 3-kinase (PI3-kinase) activity with binding to the 110-kDa protein (IC50 of 3 nM) and has no effect PI4-kinase in RBL-2H3 cells. Wortmannin also inhibits both Fc epsilon RI-mediated histamine secretion and leukotriene release, with no effect on the activation of the tyrosine kinase Lyn. ^[3] Wortmannin completely abolishes the insulin-induced hexose uptake in isolated rat adipocytes at 0.1 μM, without impairing isoproterenol-stimulated lipolytic activity. ^[4] Wortmannin suppresses insulin-induced production of nitric oxide by 50% at 500 nM in human umbilical vein endothelial cells, which is in response to IGF-1. ^[5] Wortmannin suppresses DNA double strand break (DSB) repair and has no effect on DSB levels or the kinetics of single strand break (SSB) repair in Chinese hamster ovary cells at 50 μM. Wortmannin could potentiate ionizing radiation (IR)-induced cytotoxicity with no toxicity by itself. ^[6] Wortmannin inhibits polo-like kinase (PLK1) activity IC50 of 24 nM in intact G2/M-arrested cells. ^[7] Wortmannin increases Toll-like receptor (TLR)-mediated accumulation of IL-6 in human macrophages with EC50 of 50 nM. Meanwhile Wortmannin significantly enhances TLR-mediated inducible nitric-oxide synthase (iNOS) expression and nitrite accumulation in mouse macrphages. Wortmannin activates the nuclear factor-κB and up-regulates the cytokine mRNA production. ^[8] Wortmannin also inhibits Polo-like kinase (PlK) 1 and PlK3, which play important roles in mitosis. Wortmannin treatment could lead to a reduction in phosphorylation of p53 on serine 20 induced by DNA damage. ^[9] Wortmannin suppresses hyaluronan-induced Akt phosphorylation and cell motility/migration in SW1990 cells. ^[10]
in vivo	Wortmannin inhibits peritoneal metastasis of SW1990 in mice at 1 mg/kg, without any weight loss. ^[10] Wortmannin inhibits phosphatidylinositide 3-kinase-protein kinase B (PKB)/Akt phosphorylation in both normal tissues (lung, heart and brain homogenates) and tumor tissue in mice, without mortality or acute toxicity at 0.7 mg/kg. Combination with LY188011, Wortmannin significantly increases apoptosis and inhibit tumor growth in orthotopic tumor, while both monotherapy could not. ^[11]

製品説明

Wortmannin is the first described PI3K inhibitor with IC50 of 3 nM in a cell-free assay, with little selectivity within the PI3K family. Wortmannin blocks autophagosome formation and potently inhibits DNA-PK/ATM with IC50 of 16 nM and 150 nM in cell-free assays. Wortmannin also inhibits PLK1 activity.

in vitro

The inhibition of MLCK by Wortmannin is not affected by calmodulin or peptide substrat, while reduced by high concentration of ATP. Wortmannin directly interacts with the catalytic domain of MLCK and leads to an irreversible loss of the enzyme activity. Wortmannin has no inhibitory to cAMP-dependent protein kinase, cGMP-dependent protein kinase, and calmodulin-dependent protein kinase II, and has little effect on protein kinase C activity. ^[1]

Wortmannin inhibits N-formylmethionyl-leucylphenylalanine (fMLP)-stimulated PtdInsP3 (phosphatidylinositol 3,4,5-trisphosphate) formation with IC50 of 5 nM and this inhibition is completely abolished when pretreated with 100 nM Wortmannin in human neutrophils, with increased PtdInsP2 levels and no effects on cellular PtdInsP and PtdIns contents. Wortmannin could develop oscillatory changes in F-actin content and does not inhibit fMLP-stimulated actin polymerization in neutrophils. ^[2]

Wortmannin irreversibly inhibits phosphatidylinositol 3-kinase (PI3-kinase) activity with binding to the 110-kDa protein (IC50 of 3 nM) and has no effect PI4-kinase in RBL-2H3 cells. Wortmannin also inhibits both Fc epsilon RI-mediated histamine secretion and leukotriene release, with no effect on the activation of the tyrosine kinase Lyn. ^[3]

Wortmannin completely abolishes the insulin-induced hexose uptake in isolated rat adipocytes at 0.1 μM, without impairing isoproterenol-stimulated lipolytic activity. ^[4]

Wortmannin suppresses insulin-induced production of nitric oxide by 50% at 500 nM in human umbilical vein endothelial cells, which is in response to IGF-1. ^[5]

Wortmannin suppresses DNA double strand break (DSB) repair and has no effect on DSB levels or the kinetics of single strand break (SSB) repair in Chinese hamster ovary cells at 50 μM. Wortmannin could potentiate ionizing radiation (IR)-induced cytotoxicity with no toxicity by itself. ^[6]

Wortmannin inhibits polo-like kinase (PLK1) activity IC50 of 24 nM in intact G2/M-arrested cells. ^[7]

Wortmannin increases Toll-like receptor (TLR)-mediated accumulation of IL-6 in human macrophages with EC50 of 50 nM. Meanwhile Wortmannin significantly enhances TLR-mediated inducible nitric-oxide synthase (iNOS) expression and nitrite accumulation in mouse macrphages. Wortmannin activates the nuclear factor-κB and up-regulates the cytokine mRNA production. ^[8]

Wortmannin also inhibits Polo-like kinase (PlK) 1 and PlK3, which play important roles in mitosis. Wortmannin treatment could lead to a reduction in phosphorylation of p53 on serine 20 induced by DNA damage. ^[9]

Wortmannin suppresses hyaluronan-induced Akt phosphorylation and cell motility/migration in SW1990 cells. ^[10]

in vivo

Wortmannin inhibits peritoneal metastasis of SW1990 in mice at 1 mg/kg, without any weight loss. ^[10]

Wortmannin inhibits phosphatidylinositide 3-kinase-protein kinase B (PKB)/Akt phosphorylation in both normal tissues (lung, heart and brain homogenates) and tumor tissue in mice, without mortality or acute toxicity at 0.7 mg/kg. Combination with LY188011, Wortmannin significantly increases apoptosis and inhibit tumor growth in orthotopic tumor, while both monotherapy could not. ^[11]

プロトコル(参考用のみ)

キナーゼアッセイ	MLCK assay
キナーゼアッセイ	MLCK activity is assayed with peptide substrate (KKRPQRATSNVFS-NH₂) or myosin light chain. The peptide substrate (24 μM) is phosphorylated in a reaction mixture containing 25 mM Tris-HC1 (pH 7.5), 0.5 mg/mL bovine serum albumin, 4 mM MgCl₂, 0.5 mM CaCl₂, 2.6 nM calmodulin, 1.5 nM MLCK, and 400 μM ATP in a final volume of 0.25 mL. After a 10-min preincubation at 28 ºC without ATP, the reaction is started by addition of ATP at 28 ºC and terminated by the addition of 0.1 mL of 10% (v/v) acetic acid after 30 min. The mixture is analyzed by high performance liquid chromatography: column, Unisil Pack 5C18 4.6 X 150 mm; solvent, 18% (v/v) acetonitrile, 0.1% (v/v) trifluoroacetic acid in water; flow rate, 1.0 mL/min; temperature, 40 ºC; detection, absorbance at 220 nm. Percent of reaction is calculated from the ratio of peak areas of phosphorylated form to those of unphosphorylated form. Specific activity measured under the conditions described above is 0.81 μmol/min/mg. Myosin light chain (108 μg/mL) is phosphorylated in a reaction mixture containing 25 mM Tris-HC1 (pH 7.5), 0.5 mg/mL bovine serum albumin, 4 mM MgCl₂, 0.5 mM CaCl₂, 4.2 nM calmodulin, 0.92 nM enzyme, and 10 μM[γ-³²P]ATP (100-900 cpm/pmol) in a final volume of 0.25 mL. After a 3-min preincubation at 30 ºC without ATP, the reaction is started by the addition of [γ-32P]ATP at 30 ºC and stopped by the addition of 0.125 mL of trichloroacetic acid after 5 min. The acid-precipitable materials are collected on a nitrocellulose membrane filter and washed with four 1-mL aliquots of 5% (v/v) trichloroacetic acid. The radioactivity on the filter is measured in a toluene scintillation fluid, using a Packard Tri-Carb liquid scintillation spectrometer Model 4530. The specific activity measured under the conditions is 1.23 μmol/min/mg. ^[1]
細胞アッセイ	細胞株	NK cells
	濃度	1 μM
	反応時間	1 h
	実験の流れ	Primary NK cells were pretreated with wortmannin (1 μM) for 1 h, washed twice with RPMI 1640, and then treated with IL-15 (10 ng/mL) for 24 h. DMSO was used as control.
動物実験	動物モデル	Human pancreatic adenocarcinoma cells PK1 are injected both s.c. and orthotopically into SCID mice.
	投薬量	0.175, 0.35, and 0.7 mg/kg
	投与方法	Injected by i.v.

参考

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カスタマーフィードバック

: Data from [Mol Cancer Ther, 2014, 13(1), 37-48]

: , 2014, Dr.Milica Pesic from Institute for Biological Research

: Data from [Int J Mol Sci, 2013, 14(9), 17304-18]

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