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PSN-GK1 Sale

目录号 : GC31618

PSN-GK1是有效的葡萄糖激酶(glucokinase)活化剂,EC50值为0.13μM。

PSN-GK1 Chemical Structure

Cas No.:745051-61-0

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1mg
¥9,104.00
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5mg
¥18,118.00
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10mg
¥30,791.00
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20mg
¥54,353.00
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Sample solution is provided at 25 µL, 10mM.

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实验参考方法

Kinase experiment:

Glucokinase activity is measured in a coupled reaction with glucose-6-phosphate dehydrogenase (G6PDH) by monitoring NADPH production at A340 in a plate reader after 15 min incubation at 24°C, in a final volume of 100 μL containing 25 mM HEPES pH 7.1, 25 mM KCl, 5 mM glucose, 1 mM ATP, 2 mM MgCl2, 1 mM DL-dithiothreitol, 1 mM NADP, 2.5 U/mL G6PDH, 0.4 μg GST-glucokinase. Ten dilutions of PSN-GK1 from 0.004 to 100 μM are tested, calculating and fitting fold changes in activity vs controls to sigmoidal curves using a four-parameter logistic model[2].

Animal experiment:

Mice[2]C57Bl/6J mice Food is withdrawn 5 h before dosing, while water is available throughout. A blood sample is taken from the tail tip under local anaesthetic for glucose and insulin measurement. Thereafter, mice are weighed and dosed orally with PSN-GK1 (1 or 10 mg/kg) or vehicle. Blood samples are taken 15, 30, 60, 120 and 240 min after dosing, samples (20 μL) for glucose being taken into disposable micro-pipettes and added to 480 μL haemolysis reagent[2].

References:

[1]. Bertram LS, et al. SAR, pharmacokinetics, safety, and efficacy of glucokinase activating 2-(4-sulfonylphenyl)-N-thiazol-2-ylacetamides: discovery of PSN-GK1. J Med Chem. 2008 Jul 24;51(14):4340-5.
[2]. Fyfe MC, et al. Glucokinase activator PSN-GK1 displays enhanced antihyperglycaemic and insulinotropic actions. Diabetologia. 2007 Jun;50(6):1277-87.

产品描述

PSN-GK1 is a potent glucokinase activator with an EC50 of 0.13 μM.

PSN-GK1 exhibits an excellent pharmacokinetic profile, with high oral bioavailability, in the rat. PSN-GK1 can markedly reduce blood glucose which accompanied by a trend toward increased pancreatic insulin release. Separately, the antihyperglycemic actions of PSN-GK1 have been shown to be a result of both pancreatic and hepatic effects. In addition, PSN-GK1 engenders potent antihyperglycemic effects in diabetic rodents without causing hypoglycemia[1]. At 5 mM glucose, PSN-GK1 activates glucokinase (4.3-fold, EC50=130 nM), increases MIN6 insulin secretion (26-fold, EC50=267 nM) and 2-DG hepatocytic uptake (3-fold, EC50=1 μM). In C57Bl/6 mice, PSN-GK1 reduces blood glucose at 1 and 10 mg/kg (by mouth), but insulin is increased significantly at only the higher dose. In hyperinsulinaemic 10-mM glucose clamps, PSN-GK1 increases2-DG incorporation into liver glycogen sixfold, directly demonstrating liver effects[2].

[1]. Bertram LS, et al. SAR, pharmacokinetics, safety, and efficacy of glucokinase activating 2-(4-sulfonylphenyl)-N-thiazol-2-ylacetamides: discovery of PSN-GK1. J Med Chem. 2008 Jul 24;51(14):4340-5. [2]. Fyfe MC, et al. Glucokinase activator PSN-GK1 displays enhanced antihyperglycaemic and insulinotropic actions. Diabetologia. 2007 Jun;50(6):1277-87.

Chemical Properties

Cas No. 745051-61-0 SDF
Canonical SMILES O=C(NC1=NC=C(F)S1)[C@@H](C2=CC=C(S(=O)(C3CC3)=O)C=C2)CC4CCOCC4
分子式 C20H23FN2O4S2 分子量 438.54
溶解度 Soluble in DMSO 储存条件 Store at -20°C
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溶解性数据

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1 mg 5 mg 10 mg
1 mM 2.2803 mL 11.4015 mL 22.8029 mL
5 mM 0.4561 mL 2.2803 mL 4.5606 mL
10 mM 0.228 mL 1.1401 mL 2.2803 mL
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Research Update

Glucokinase activator PSN-GK1 displays enhanced antihyperglycaemic and insulinotropic actions

Aims/hypothesis: We evaluated the insulinotropic and antihyperglycaemic actions of glucokinase activators (GKAs), especially through acute and subchronic studies in rodent diabetes models with (2R)-2-(4-cyclopropanesulphonylphenyl)-N-(5-fluorothiazol-2-yl)-3-(tetrahydropyran-4-yl)propionamide (PSN-GK1), a novel and potent GKA. Materials and methods: The action of PSN-GK1 on or in the following were investigated: (1) on human liver glucokinase, insulin secretion from MIN6 cells and 2-deoxy-D: -[(3)H]glucose (2-DG) uptake into rat hepatocytes; and (2) in Zucker diabetic fatty rats and in non-diabetic C57Bl/6, diabetic db/db and ob/ob mice. Results: At 5 mmol/l glucose, PSN-GK1 activated glucokinase (4.3-fold, median effective concentration [EC(50)] 130 nmol/l), increased MIN6 insulin secretion (26-fold, EC(50) 267 nmol/l) and 2-DG hepatocytic uptake (threefold, EC(50) 1 micromol/l); at higher glucose concentrations, EC(50)s and fold-effectiveness were both lower. In C57Bl/6 mice, PSN-GK1 reduced blood glucose at 1 and 10 mg/kg (by mouth), but insulin was increased significantly at only the higher dose. In hyperinsulinaemic 10-mmol/l glucose clamps, PSN-GK1 increased 2-DG incorporation into liver glycogen sixfold, directly demonstrating liver effects. PSN-GK1 improved glycaemic profiles in db/db mice and Zucker diabetic fatty rats, diabetic animal models in which GKA efficacy has not previously been described, without causing hypoglycaemia. In ob/ob mice, it dose-dependently reduced excursions in OGTTs. Moreover, after subchronic administration, no tachyphylaxis was evident and glycaemia was improved without alterations to lipid levels, liver weight, glycogen content or body weight. Conclusions/interpretation: PSN-GK1 was potently antihyperglycaemic through its effects on insulin release and hepatic glucose metabolism. It is one of the most potent GKAs described in the literature and is active in diabetic animal models where GKAs have not been reported to show efficacy to date. Ongoing human trials are investigating the potential of this novel therapeutic approach.

SAR, pharmacokinetics, safety, and efficacy of glucokinase activating 2-(4-sulfonylphenyl)-N-thiazol-2-ylacetamides: discovery of PSN-GK1

Allosteric activators of the glucose-sensing enzyme glucokinase (GK) are currently attracting much interest as potential antidiabetic therapies because they can achieve powerful blood glucose lowering through actions in multiple organs. Here, the optimization of a weakly active high-throughput screening hit to (2 R)-2-(4-cyclopropanesulfonylphenyl)- N-(5-fluorothiazol-2-yl)-3-(tetrahydropyran-4-yl)propionamide (PSN-GK1), a potent GK activator with an improved pharmacokinetic and safety profile, is described. Following oral administration, this compound elicited robust glucose lowering in rats.