GSK503

Catalog No.S7804

For research use only.

GSK503 is a potent and specific EZH2 methyltransferase inhibitor.

GSK503 Chemical Structure

CAS No. 1346572-63-1

Selleck's GSK503 has been cited by 4 Publications

1 Customer Review

Purity & Quality Control

Choose Selective Histone Methyltransferase Inhibitors

Biological Activity

Description GSK503 is a potent and specific EZH2 methyltransferase inhibitor.
Targets
EZH2 [1]
()
8 nM
In vitro

GSK503 inhibits the methyltransferase activity of WT and mutant EZH2 with similar potency. In a panel of seven DLBCL cell lines, GSK503 causes growth inhibition and the effects are enhanced by ABT737 or Obatoclax. [1]

In vivo In C57BL6 mice immunized with SRBC, GSK503 (150 mg/kg, i.p.) reduced the level of H3K27me3 in splenocytes. In male SCID mice bearing SUDHL4 and SUDHL6 tumors, GSK503 (150 mg/kg, i.p.) inhibits tumor growth. [1] In C57Bl/6 mice bearing murine B16-F10 tumors, GSK503 (150 mg/kg, i.p.) significantly reduces global H3K27me3 levels, inhibits tumor growth and virtually abolishes metastases formation. [2]

Protocol (from reference)

Kinase Assay:[1]
  • In vitro biochemical assays against histone acetylases:

    GSK503 is profiled to assess inhibition against a panel of histone acetylases. GSK503 is dissolved in DMSO and tested in 10-dose IC50 mode with 3-fold serial dilution starting at 100 μM, with a final DMSO concentration of 2%. Anacardic Acid is used as positive control for CBP, GCN5, and pCAF and tested in 10-dose IC50 mode with 3-fold serial dilution starting at 100 μM. Curcumin is used as positive control for KAT5, MYST2/KAT7, MYST4/KAT6B, and p300, and tested in 10-dose IC50 mode with 3-fold serial dilution starting at 100 μM. Reactions are carried out at 3.08 μM Acetyl-CoA. For CBP, GCN5, MYST2/KAT7, pCAF, and p300, the substrate used is histone H3. For KAT5 and MYST4/KAT6B the substrates used are histone H2A and histone H4, respectively.

Animal Research:[1]
  • Animal Models: Male SCID mice bearing SUDHL4 and SUDHL6 tumors
  • Dosages: 150 mg/kg daily
  • Administration: i.p.

Solubility (25°C)

In vitro

DMSO 100 mg/mL
(189.87 mM)
Ethanol 26 mg/mL warmed
(49.36 mM)
Water Insoluble

Chemical Information

Molecular Weight 526.67
Formula

C31H38N6O2

CAS No. 1346572-63-1
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CC1=CC(=C(C(=O)N1)CNC(=O)C2=C3C(=CN(C3=CC(=C2)C4=CN=C(C=C4)N5CCN(CC5)C)C(C)C)C)C

In vivo Formulation Calculator (Clear solution)

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

mg/kg g μL

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.)

% DMSO % % Tween 80 % ddH2O
%DMSO %

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.

Molarity Calculator

Mass Concentration Volume Molecular Weight

Tech Support

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.

Handling Instructions

Tel: +1-832-582-8158 Ext:3
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Frequently Asked Questions

Question 1:
Is there any recommended vehicle for in vivo experiment for this compound?

Answer:
The IP formulation for GSK503 is 2% DMSO+40% PEG 300+2%Tween 80+ddH2O.

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