SEL120-34A monohydrochloride

• CAT Number: I046252
• CAS Number: 2443816-41-7
• Molecular Formula: C15H19Br2ClN4
• Molecular Weight: 450.60
• Purity: ≥95%
• Synonyms: 6,7-dibromo-5-methyl-2-piperazin-1-yl-1,3-diazatricyclo[6.3.1.04,12]dodeca-2,4,6,8(12)-tetraene;hydrochloride
• InChI: InChI=1S/C15H18Br2N4.ClH/c1-9-11(16)12(17)10-3-2-6-21-14(10)13(9)19-15(21)20-7-4-18-5-8-20;/h18H,2-8H2,1H3;1H
• InChIKey: GQXLWUCQESKBSC-UHFFFAOYSA-N
• SMILES: CC1=C2C3=C(CCCN3C(=N2)N4CCNCC4)C(=C1Br)Br.Cl

SEL120-34A monohydrochloride is an ATP-competitive and selective CDK8 inhibitor, inhibits kinase activities of CDK8/CycC and CDK19/CycC complexes with IC50s of 4.4 nM and 10.4 nM, respectively, with a Kd of 3 nM for CDK8. SEL120-34A monohydrochloride weakly inhibits CDK9 (calculated IC50=1070 nM), but shows no obvious activity against CDK1, 2, 4, 6, 5, 7. SEL120-34A monohydrochloride inhibits phosphorylation of STAT1 S727 and STAT5 S726[1]. Has anti-tumor activity[1].
SEL120-34A monohydrochloride is an ATP-competitive and selective CDK8 inhibitor, inhibits kinase activities of CDK8/CycC and CDK19/CycC complexes with IC50s of 4.4 nM and 10.4 nM, respectively, with a Kd of 3 nM for CDK8. SEL120-34A monohydrochloride weakly inhibits CDK9 (calculated IC50=1070 nM), but shows no obvious activity against CDK1, 2, 4, 6, 5, 7[1].
SEL120-34A (1.6 nM-5 μM) inhibits the growth of STAT5 S726 positive KG-1 AML cells, but is not cytotoxic to S726 negative MOLM13 AML cells[1].
SEL120-34A monohydrochloride inhibits phosphorylation of STAT1 S727 and STAT5 S726, decreases IRF9 and STAT1 mRNA expression and mitogen-induced IER expression[1].
SEL120-34A monohydrochloride (30, 60 mg/kg, p.o. once every day) inhibits growth of AML tumors in a dose-dependent manner in SCID mice after treatment for 17 days[1].

Reference

[1]. Rzymski T, et al. SEL120-34A is a novel CDK8 inhibitor active in AML cells with high levels of serine phosphorylation of STAT1 and STAT5 transactivation domains. Oncotarget. 2017 May 16;8(20):33779-33795.
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