GSK126
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产品名称:GSK126CAS:1346574-57-9别名：GSK126;GSK126;GSK-126;GSK126;CPDB1065英文名：S)-1-(sec-butyl)-N-((4,6-diMethyl-2-oxo-1,2-dihydropyridin-3-yl)Methyl)-3-Methyl-6-(6-(piperazin-1-yl)pyridin-3-yl)-1H-indole-4-carboxaMide
[] - 生物活性GSK126 是一种有效的，高选择性EZH2 methyltransferase抑制剂，IC50为9.9 nM，对 EZH2 的选择性比其他20种人甲基转移酶高1000多倍。
- 体外研究GSK126 induced a 50% loss of H3K27 tri-methylation (H3K27me3) in both EZH2 wild-type and mutant DLBCL cell lines at concentrations ranging from 7–252 nM independent of EZH2 mutation status. GSK126 suppresses cell proliferation of a panel of B-cell lymphoma cell lines. Six of the seven most sensitive DLBCL cell lines harboured Y641N, Y641F or A677G EZH2 mutations (growth IC50 = 28–861 nM). 72 h treatment with 500 nM GSK126 induces transcriptional activation in sensitive cell lines.
- 体内研究GSK126 treated once-daily for 10 days decreases global H3K27me3 and increases gene expression in subcutaneous xenografts of KARPAS-422 in a dose-dependent fashion. With daily 50 mg per kg dosing, complete tumour growth inhibition is observed. When higher dosing regimens are examined with KARPAS-422 xenografts, marked tumour regression is observed. Upon cessation of dosing, tumours in the 50 mg per kg once daily group shows tumour stasis whereas complete tumour eradication is observed in the 150 mg per kg once daily and 300 mg per kg twice per week groups. Tumour growth inhibition also correlates with statistically significant increased survival of mice bearing the more aggressive KARPAS-422 tumours, where spontaneous deaths occurres in vehicle-treated animals. No significant changes in any blood cell types at doses and times where efficacy is observed in tumour xenografts.
