GSK503

Modify Date: 2024-01-02 12:35:13

GSK503 Structure
GSK503 structure
Common Name GSK503
CAS Number 1346572-63-1 Molecular Weight 526.672
Density 1.2±0.1 g/cm3 Boiling Point 798.6±60.0 °C at 760 mmHg
Molecular Formula C31H38N6O2 Melting Point N/A
MSDS N/A Flash Point 436.8±32.9 °C

 Use of GSK503


GSK503 is a potent and specific inhibitor of EZH2 methyltransferase with Kiapp values of 3 to 27 nM.

 Names

Name N-[(4,6-Dimethyl-2-oxo-1,2-dihydro-3-pyridinyl)methyl]-3-methyl-1-(1-methylethyl)-6-[6-(4-methyl-1-piperazinyl)-3-pyridinyl]-1H-indole-4-carboxamide
Synonym More Synonyms

 GSK503 Biological Activity

Description GSK503 is a potent and specific inhibitor of EZH2 methyltransferase with Kiapp values of 3 to 27 nM.
Related Catalog
Target

Ki: 3 to 27 nM (EZH2)[1]

In Vitro GSK503 inhibits the methyltransferase activity of wild type and mutant EZH2 with similar potency (Kiapp=3-27 nM) and is structurally related to GSK126 and GSK343. GSK503 is >200 fold selective over EZH1 (Kiapp=636 nM) and >4000 fold selective over other histone methyltransferases[1].
In Vivo In a melanoma mouse model, conditional EZH2 ablation as much as treatment with the GSK503 stabilizes the disease through inhibition of growth and virtually abolishes metastases formation without affecting normal melanocyte biology[2]. GSK503 displays favorable pharmacokinetics in mice. GSK503, but not vehicle, prevents the formation of germinal center after SRBC or NP-KLH immunization, phenocopying the Ezh2 null phenotype. GSK503 treatment leads to reduced numbers of GC B-cells by flow cytometry, reduces number and volume of GCs by immunohistochemistry, and impairs formation high affinity antibodies[1].
Animal Admin Mice: To pharmacologically inhibit Ezh2 activity, Tyr::N-RasQ61K Ink4a-/- and C57Bl/6 mice are subjected to treatment with GSK503, which is diluted (15 mg/mL) in 20% Captisol solution. Efficient Ezh2 inhibition is achieved by daily intraperitoneal injections of 150 mg/kg GSK503 over 35 consecutive days. Mice are monitored during and after treatment to measure GSK503-induced reversible weight loss. C57Bl/6 and Foxn1nu/nu mice engrafted with melanoma cells are subjected to TM and GSK503 treatment as described above[2].
References

[1]. Béguelin W, et al. EZH2 is required for germinal center formation and somatic EZH2 mutations promote lymphoid transformation. Cancer Cell. 2013 May 13;23(5):677-92.

[2]. Zingg D, et al. The epigenetic modifier EZH2 controls melanoma growth and metastasis through silencing of distinct tumour suppressors. Nat Commun. 2015 Jan 22;6:6051.

 Chemical & Physical Properties

Density 1.2±0.1 g/cm3
Boiling Point 798.6±60.0 °C at 760 mmHg
Molecular Formula C31H38N6O2
Molecular Weight 526.672
Flash Point 436.8±32.9 °C
Exact Mass 526.305603
LogP 3.30
Vapour Pressure 0.0±2.8 mmHg at 25°C
Index of Refraction 1.648
Storage condition -20℃

 Synonyms

1H-Indole-4-carboxamide, N-[(1,2-dihydro-4,6-dimethyl-2-oxo-3-pyridinyl)methyl]-3-methyl-1-(1-methylethyl)-6-[6-(4-methyl-1-piperazinyl)-3-pyridinyl]-
N-[(4,6-Dimethyl-2-oxo-1,2-dihydro-3-pyridinyl)methyl]-1-isopropyl-3-methyl-6-[6-(4-methyl-1-piperazinyl)-3-pyridinyl]-1H-indole-4-carboxamide
GSK-503
GSK503
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