||Voruciclib, also known as P1446A-05, is a protein kinase inhibitor specific for the cyclin-dependent kinase 4 (CDK4) with potential antineoplastic activity. CDK4 inhibitor P1446A-05 specifically inhibits CDK4-mediated G1-S phase transition, arresting cell cycling and inhibiting cancer cell growth. The serine/threonine kinase CDK4 is found in a complex with D-type G1 cyclins and is the first kinase to become activated upon mitogenic stimulation, releasing cells from a quiescent stage into the G1/S growth cycling stage; CDK-cyclin complexes have been shown to phosphorylate the retinoblastoma (Rb) transcription factor in early G1, displacing histone deacetylase (HDAC) and blocking transcriptional repression.
||Alvocidib is a synthetic N-methylpiperidinyl chlorophenyl flavone compound. As an inhibitor of cyclin-dependent kinase, alvocidib induces cell cycle arrest by preventing phosphorylation of cyclin-dependent kinases (CDKs) and by down-regulating cyclin D1 and D3 expression, resulting in G1 cell cycle arrest and apoptosis. This agent is also a competitive inhibitor of adenosine triphosphate activity. Check for active clinical trials or closed clinical trials using this agent.
|| BS-181 is a highly selective CDK inhibitor for CDK7 with an IC(50) of 21 nmol/L. Testing of other CDKs as well as another 69 kinases showed that BS-181 only inhibited CDK2 at concentrations lower than 1 micromol/L, with CDK2 being inhibited 35-fold less potently (IC(50) 880 nmol/L) than CDK7. In MCF-7 cells, BS-181 inhibited the phosphorylation of CDK7 substrates, promoted cell cycle arrest and apoptosis to inhibit the growth of cancer cell lines, and showed antitumor effects in vivo.
||Riviciclib, also known as P276-00 , is a flavone and cyclin dependent kinase (CDK) inhibitor with potential antineoplastic activity. P276-00 selectively binds to and inhibits Cdk4/cyclin D1, Cdk1/cyclin B and Cdk9/cyclin T1, serine/threonine kinases that play key roles in the regulation of the cell cycle and cellular proliferation. Inhibition of these kinases leads to cell cycle arrest during the G1/S transition, thereby leading to an induction of apoptosis, and inhibition of tumor cell proliferation.
||MC180295 is a highly selective CDK9 inhibitor (IC50 = 5 nM). (MC180295 has broad anti-cancer activity in vitro and is effective in in vivo cancer models. Additionally, CDK9 inhibition sensitizes to the immune checkpoint inhibitor α-PD-1 in vivo, making it an excellent target for epigenetic therapy of cancer.
||LDC000067 is a potent and selective CDK9 inhibitor. LDC000067 inhibited in vitro transcription in an ATP-competitive and dose-dependent manner. Gene expression profiling of cells treated with LDC000067 demonstrated a selective reduction of short-lived mRNAs, including important regulators of proliferation and apoptosis. Analysis of de novo RNA synthesis suggested a wide ranging positive role of CDK9. At the molecular and cellular level, LDC000067 reproduced effects characteristic of CDK9 inhibition such as enhanced pausing of RNA polymerase II on genes and, most importantly, induction of apoptosis in cancer cells. LDC000067 inhibits P-TEFb-dependent in vitro transcription. Induces apoptosis in vitro and in vivo in combination with BI 894999.
||SEL120-34A is a potent and selective CDK8 inhibitor active in AML cells with high levels of serine phosphorylation of STAT1 and STAT5 transactivation domains. EL120-34A inhibits phosphorylation of STAT1 S727 and STAT5 S726 in cancer cells in vitro. Consistently, regulation of STATs- and NUP98-HOXA9- dependent transcription has been observed as a dominant mechanism of action in vivo.
||MSC2530818 is a Potent, Selective, and Orally Bioavailable CDK8 Inhibitor with CDK8 IC50 = 2.6 nM; Human PK prediction: Cl ~ 0.14 L/H/Kg; t1/2 ~ 2.4h; F > 75%.
||CYC065 is a second-generation, orally available ATP-competitive inhibitor of CDK2/CDK9 kinases with potential antineoplastic and chemoprotective activities.
||THZ531 is a covalent CDK12 and CDK13 covalent inhibitor. Cyclin-dependent kinases 12 and 13 (CDK12 and CDK13) play critical roles in the regulation of gene transcription.
||THZ2, an analog of THZ1, with the potential to treat Triple-negative breast cancer (TNBC), it is a potent and selective CDK7 inhibitor which overcomes the instability of THZ1 in vivo. IC50: CDK7= 13.9 nM; TNBC cells= 10 nM