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5.00580

Sigma-Aldrich

Ezh2 Inhibitor III, GSK126

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Synonym(s):
Ezh2 Inhibitor III, GSK126, Enhancer of Zested Homolog 2 Inhibitor III, ( 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)-1 H-indole-4-carboxamide, HMTase Inhibitor XIV
Empirical Formula (Hill Notation):
C31H38N6O2
Molecular Weight:
526.67
UNSPSC Code:
12352200
NACRES:
NA.77

Assay

≥98% (HPLC)

Quality Level

form

semisolid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

brown

solubility

DMSO: 10 mg/mL

storage temp.

−20°C

General description

A cell-permeable EI1 (Cat. No. 500561) structural analog that acts as an equally potent, SAM-competitive, Ezh2/PRC2 inhibitor (Ki = 0.5 to 3 nM against wt & mutant Ezh2-containing PRC2; [SAM] = 7.5 µM) with similar selectivity over Ezh1/PRC2 (Ki = 89 nM) and other HTMases as EI1. Among panels of 14 HDACs, 11 GPCRs, and 300 kinases, only serotonin 3 receptor, JMJD2d, and CaMK1a are significantly inhibited at much higher concentrations (IC50 ≥4 µM). Shown to inhibit the proliferation of DLBCL (IC50 28 nM to 5.5 µM; 6 d treatment) in vitro and completely suppress Pfeiffer (A677G) and Karpas-422 (Y641N) tumor expansion in mice in vivo (50 mg/kg/d i.p.).

Please note that the molecular weight for this compound is batch-specific due to variable water content. Please refer to the vial label or the certificate of analysis for the batch-specific molecular weight. The molecular weight provided represents the baseline molecular weight without water.
A cell-permeable EI1 (Cat. No. 500561) structural analog that acts as an equally potent, SAM-competitive, Ezh2/PRC2 inhibitor (Ki = 0.5 to 3 nM against wt, A677G, Y641F, Y641H, Y641N, Y641S, Y641C Ezh2-containing PRC2; [SAM] = 7.5 µM) with similar selectivity over Ezh1/PRC2 (Ki = 89 nM) and other HTMases as EI1. Among panels of 14 HDACs, 11 GPCRs, and 300 kinases, only serotonin 3 receptors, JMJD2d, and CaMK1a are significantly inhibited at much higher concentrations (IC50 = 4, 7.9, and ≥10 µM, respectively). In addition to DLBCL (diffuse large B cell lymphoma; IC50 ranges from 28 nM to 5.5 µM; 6 d treatment), GSK126 is also shown to inhibit the proliferation of other B-NHL (non-Hodgkin′s lymphoma) and Hodgkin′s lymphoma cell lines, being least active against MC116, HD-MY-Z, WSU-FSCCL, Toledo, NU-DUL-1, and WILL-2 (IC50 >10 µM; 6 d treatment). When administered at a daily i.p. dose of 50 mg/kg GSK126 is reported to completely suppress Pfeiffer (A677G) and Karpas-422 (Y641N) tumor expansion in mice in vivo, while complete tumor eradication can be achieved with higher dosing regimens (150 mg/kg/day or two 300 mg/kg dosages per week).

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Use only fresh DMSO for reconstitution.

Other Notes

McCabe, M.T., et al. 2012. Nature.492, 108.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Shireen Aziz et al.
Biochemistry and cell biology = Biochimie et biologie cellulaire, 101(1), 87-100 (2022-12-06)
Myocardial fibrosis is a common pathological companion of various cardiovascular diseases. To date, the role of enhancer of zeste homolog 2 (EZH2) in cancer has been well demonstrated including in renal carcinoma and its inhibitors have entered the stage of
TAD-like single-cell domain structures exist on both active and inactive X chromosomes and persist under epigenetic perturbations
Yubao Cheng, et al.
Genome Biology, 22 (2021)

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