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Beschreibung

A cell-permeable benzimidazolyl-benzimidazolothione that targets BD1 (bromodomain 1) of the BET (bromodomain and extra terminal domain) family member BRD2 (Kd = 28 microM in equilibrium binding studies by SPR, using human BRD2 aa 74-194), making it inaccessible for acetylated H4K12 (histone H4 Lys12) binding. Shown to effectively inhibit TSA- (Cat. No. 647925, 1 h 1 microM) induced BRD2 BD1-H4K12 association in COS7 cells (59% and 100% inhibition, respectively, by 10 and 60 microM BIC1) and greatly suppress active Ras-induced SV40 promoter transcriptional activation in RasV12-transfected HeLa cells (70% inhibition by 5 microM BIC1), while being much less effective against BRDT BD1 and acetylated H4K5/K8 interaction in TSA-stimulated COS7 cells (Maximum inhibition = 47% by 60 microM BIC1)., A cell-permeable benzimidazolyl-benzimidazolothione that targets the BD1 domain of the BET family member BRD2 (Kd = 28 microM), making it inaccessible for acetylated H4K12 (histone H4 Lys12) binding. Shown to effectively inhibit TSA- (Cat. No. 647925, 1 h 1 microM) induced BRD2 BD1-H4K12 association in COS7 cells (100% inhibition by 60 microM BIC1) and greatly suppress active Ras-induced SV40 promoter transcription activity in HeLa cells (70% inhibition by 5 microM BIC1), while being much less effective against BRDT BD1 binding to acetylated H4K5/K8.