CDK7 9-IN-1 is a specific inhibitor of cyclin-dependent kinases 7 9 (CDK7 9). It specifically targets CDK7, while also displaying inhibitory activity against CDK9. CDK7 9-IN-1 demonstrates excellent inhibitory potency against CDK7, with IC50 values of 0.0656 μM and 0.00574 μM without pre-incubation and after 3 hours pre-incubation, respectively. Furthermore, CDK7 9-IN-1 inhibits CDK9 with an IC50 of 2.14 μM after 3 hours pre-incubation. Its application in cancer research makes it valuable for such investigations.
CDK7 9 tide is peptide substrate for CDK7 or CDK9[1]. [1]. Robert T, et, al. Development of a CDK10 CycM in vitro Kinase Screening Assay and Identification of First Small-Molecule Inhibitors. Front Chem. 2020 Feb 27; 8:147.
Ibulocydine is a potent CDKinhibitor. Ibulocydine has high activity against Cdk7 cyclin H Mat1 and Cdk9 cyclin T. Ibulocydine inhibited the growth of HCC cells more effectively than other Cdkinhibitors, including olomoucine and roscovitine, whereas ibulocydine as well as the other Cdkinhibitors and BMK-Y101 minimally influenced the growth of normal hepatocyte cells. Ibulocydine induced apoptosis in HCC cells, most likely by inhibiting Cdk7 and Cdk9. In vitro treatment of HCC cells with ibulocydine rapidly blocked phosphorylation of the carboxyl-terminal domain (CTD) of the large subunit of RNA polymerase II, a process mediated by Cdk7 9. Anti-apoptotic gene products such as Mcl-1, survivin, and X-linked IAP (XIAP) are crucial for the survival of many cell types, including HCC. Following the inhibition of RNA polymerase II phosphorylation, ibulocydine caused rapid down-regulation of Mcl-1, survivin, and XIAP, thus inducing apoptosis. Furthermore, ibulocydine effectively ind......