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GSK503

Catalog No.GC11414

EZH2 inhibitor

Products are for research use only. Not for human use. We do not sell to patients.

GSK503 Chemical Structure

Cas No.: 1346572-63-1

Size Price Stock Qty
10mM (in 1mL DMSO)
$111.00
In stock
5mg
$62.00
In stock
10mg
$105.00
In stock
50mg
$322.00
In stock

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Sample solution is provided at 25 µL, 10mM.

Description of GSK503

GSK503 is a potent inhibitor of EZH2.

Enhancer of zeste homolog 2 (EZH2) is a histone-lysine N-methyltransferase enzyme that catalyses trimethylation of lysine 27 in histone 3 (H3K27me3), and then induces chromatin compaction and consequently inhibits target genes transcription.

GSK503 is a potent EZH2 inhibitor with anticancer activity. In human melanoma cells, GSK503 significantly reduced H3K27me3 levels, induced G1 cell cycle arrest and slowed down cell growth [1].

In mice, GSK503 induced reversible weight loss by ~10%. In mice with skin melanomas, GSK503 reduced H3K27me3 levels in tumour and stromal cells, and significantly reduced the emergence of new skin melanomas. Also, GSK503 significantly inhibited the proliferation of tumour cells. In C57Bl/6 mice xenografted murine B16-F10 melanoma cells, GSK503 significantly reduced H3K27me3 levels and inhibited tumor growth. Also, GSK503 inhibited lymph node and lung metastases of melanoma and reduced lung nodule counts. GSK503 increased the expression of deoxycytidine kinase (DCK), adenosylmethionine decarboxylase 1 (AMD1) and WD repeat domain 19 (WDR19), which were EZH2 target genes [1].

Reference:
[1].  Zingg D, Debbache J, Schaefer SM, et al. The epigenetic modifier EZH2 controls melanoma growth and metastasis through silencing of distinct tumour suppressors. Nat Commun, 2015, 6: 6051.

Protocol of GSK503

Cell experiment [1]:

Cell lines

Human melanoma cells

Preparation method

The solubility of this compound in DMSO is >21.65mg/mL. General tips for obtaining a higher concentration: Please warm the tube at 37 ℃ for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below -20℃ for several months.

Reacting condition

1 μM; 8 days; 37 ℃

Applications

GSK503 significantly reduced H3K27me3 levels, induced G1 cell cycle arrest and slowed down cell growth.

Animal experiment [1]:

Animal models

Mice engrafted subcutaneously with melanoma cells, C57Bl/6 mice xenografted murine B16-F10 melanoma cells

Dosage form

Intraperitoneal injections; 150 mg/kg; 35 consecutive days

Application

GSK503 treatment drastically reduced the emergence of new skin melanomas over time after treatment start. GSK503 treatment prevented murine melanoma growth. GSK503 significantly inhibited the proliferation of tumour cells. In C57Bl/6 mice xenografted murine B16-F10 melanoma cells, GSK503 significantly reduced H3K27me3 levels and inhibited tumor growth. GSK503 inhibited lymph node and lung metastases of melanoma and reduced lung nodule counts.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.

References:

[1]. Zingg D, Debbache J, Schaefer SM, et al. The epigenetic modifier EZH2 controls melanoma growth and metastasis through silencing of distinct tumour suppressors. Nat Commun, 2015, 6: 6051.

Chemical Properties of GSK503

Cas No. 1346572-63-1 SDF
Chemical Name (Z)-N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)-1-isopropyl-3-methyl-6-(6-(4-methylpiperazin-1-yl)pyridin-3-yl)-1H-indole-4-carbimidic acid
Canonical SMILES CC(N(C1=CC(C2=CN=C(N3CCN(CC3)C)C=C2)=CC(/C(O)=N/CC4=C(O)N=C(C=C4C)C)=C51)C=C5C)C
Formula C31H38N6O2 M.Wt 526.67
Solubility ≥ 21.65 mg/mL in DMSO, ≥ 26.85 mg/mL in EtOH with gentle warming Storage Store at -20°C
General tips Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month.
To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.

Complete Stock Solution Preparation Table of GSK503

Prepare stock solution
1 mg 5 mg 10 mg
1 mM 1.8987 mL 9.4936 mL 18.9872 mL
5 mM 0.3797 mL 1.8987 mL 3.7974 mL
10 mM 0.1899 mL 0.9494 mL 1.8987 mL
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In vivo Formulation Calculator (Clear solution) of GSK503

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

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Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

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Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 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.
3. All of the above co-solvents are available for purchase on the GlpBio website.

Product Documents

Quality Control & SDS

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Average Rating: 5 ★★★★★ (Based on Reviews and 19 reference(s) in Google Scholar.)

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