LEE011 (Ribociclib): Selectivity & Specificity
LEE011 (Ribociclib) is a potent inhibitor of CDK4/cyclinD1 (2 nM), CDK4 (10 nM), Cyclin D1–CDK4 (10 nM), CDK6 (39 nM), CyclinD1/2/3–CDK6 (39 nM), CDK4/CDK6 (10/39 nM), cyclin D–CDK4/6 complexes (<40 nM), CDK2 (70 nM), CaMKII δ (153 nM), PDE4A (250 nM), PDE4C (4400 nM), PDE4B (4940 nM), PDE4D (>10000 nM), Cyclin A/E–CDK2 (76000 nM), Cyclin B–CDK1 (113000 nM), PDE4, CDK4/6. LEE011 (Ribociclib) exhibits the greatest inhibitory potency toward CDK4/cyclinD1 (IC50 = 2 nM).