For research use only.
Catalog No.S7609 Synonyms: GW69A, GW554869A
Molecular Weight(MW): 577.5
GW4869 is a neutral, noncompetitive inhibitor of sphingomyelinase (SMase) with an IC50 of 1 μM. It is selective for N-SMase, and does not inhibit acid SMase at up to at least 150 μM.
Selleck's GW4869 has been cited by 10 publications
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Choose Selective Phospholipase (e.g. PLA) Inhibitors
|Description||GW4869 is a neutral, noncompetitive inhibitor of sphingomyelinase (SMase) with an IC50 of 1 μM. It is selective for N-SMase, and does not inhibit acid SMase at up to at least 150 μM.|
GW4869 inhibits N-SMase not only in vitro but also in a cellular model. GW4869 does not significantly impair TNF-induced NF-κB translocation to nuclei. Therefore, GW4869 does not interfere with other key TNF-mediated signaling effects. GW4869 is able, in a dose-dependent manner, to significantly protect from cell death as measured by nuclear condensation, caspase activation, PARP degradation, and trypan blue uptake. These protective effects are accompanied by significant inhibition of cytochrome c release from mitochondria and caspase 9 activation, therefore localizing N-SMase activation upstream of mitochondrial dysfunction. At up to 150 μM, GW4869 does not inhibit the cloned human A-SMase. GW4869 shows no or minor inhibitory activity versus other hydrolytic enzymes, such as bacterial phosphatidylcholine-PLC and bovine protein phosphatase 2A, and it shows significantly higher activity versus the rat brain enzyme compared with the human lyso-PAF PLC.
|In vivo||Systemic administration of GW4869 does not alter the ceramide or sphingomylein content of liver, heart or skeletal muscle but does decrease the ceramide content and increase the sphingomyelin content in brain. Inhibition of nSMase2 with GW4869 slowed learning. Mice administered GW4869 do not progressively decrease latency to locate the hidden platform with repeated training trials, suggesting that they has difficulty learning to use spatial cues to navigate the pool. Intraperitoneal injection of GW4869 reduces the levels of brain and serum exosomes, brain ceramide, and Aβ1-42 plaque load. GW4869 reduces amyloid plaque formation in vivo by preventing exosome secretion. GW4869 may have a low toxicity at levels needed to achieve a biological effect from nSMase2 inhibition.|
|In vitro||DMSO||Insoluble . Please powderise before use.|
* 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.
In vivo Formulation Calculator (Clear solution)
|Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)|
|Dosage||mg/kg||Average weight of animals||g||Dosing volume per animal||ul||Number of animals|
|Step 2: Enter the in vivo formulation ()|
|% DMSO % % Tween 80 % ddH2O|
Working concentration： mg/ml；
Method for preparing DMSO master liquid: ： mg drug pre-dissolved in μL DMSO (Master liquid concentration mg/mL，)
Method for preparing in vivo formulation：Take DMSO master liquid, next addμL PEG300， mix and clarify, next addμL Tween 80，mix and clarify, next add μL ddH2O，mix and clarify.
1.Please make sure the liquid is clear before adding the next solvent.
2.Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
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Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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