CDK9 Inhibitor

Abemaciclib (LY2835219) is a selective and BBB-permeable CDK4/6 inhibitor with IC₅₀ values of 2 nM and 10 nM for CDK4 and CDK6, respectively.

Dinaciclib (SCH 727965) is a potent inhibitor of CDK, with IC₅₀s of 1 nM, 1 nM, 3 nM, and 4 nM for CDK2, CDK5, CDK1, and CDK9, respectively.

AZD4573 is a potent and highly selective CDK9 inhibitor (IC₅₀ of <4 nM) that enables transient target engagement for the treatment of hematologic malignancies.

Abemaciclib methanesulfonate (LY2835219 methanesulfonate) is a selective and BBB-permeable CDK4/6 inhibitor with IC₅₀s of 2 nM and 10 nM for CDK4 and CDK6, respectively.

Wogonin is a naturally occurring mono-flavonoid, can inhibit the activity of CDK8 and Wnt, and exhibits anti-inflammatory and anti-tumor effects.

CDK9-IN-51 is a CDK9 inhibitor. CDK9-IN-51 binds stably to purified CDK9 protein via interactions with key active-site residues Cys106, Asp109, and Phe103. CDK9-IN-51 exhibits antiproliferative activity against multiple cancer cells. CDK9-IN-51 can be used for the research of cancer, such as lung carcinoma, cervical carcinoma and breast carcinoma.

CDK9-IN-49 is a CDK9 inhibitor with an IC₅₀ of 7.32 nM. CDK9-IN-49 inhibits the proliferation of various cancer cells. CDK9-IN-49 can be used in the research of cancers such as acute myeloid leukemia and prostate cancer.

SNS-032 (BMS-387032) is a potent and selective inhibitor of CDK2, CDK7, and CDK9 with IC₅₀s of 38 nM, 62 nM and 4 nM, respectively. SNS-032 has antitumor effect.

THZ531 is a selective and covalent inhibitor of both CDK12 and CDK13 with IC₅₀s of 158 nM and 69 nM, respectively.

SY-5609 (CDK7-IN-3) is an orally active, highly selective, noncovalent CDK7 inhibitor with a K_D of 0.065 nM. SY-5609 shows poor inhibition on CDK2 (K_i=2600 nM), CDK9 (K_i=960 nM), CDK12 (K_i=870 nM). SY-5609 induces apoptosis in tumor cells and has antitumor activity.

NVP-2 is a potent and selective ATP-competitive cyclin dependent kinase 9 (CDK9) probe, inhibits CDK9/CycT activity with an IC₅₀ of 0.514 nM. NVP-2 displays inhibitory effcts on CDK1/CycB, CDK2/CycA and CDK16/CycY kinases with IC₅₀ values of 0.584 μM, 0.706 μM, and 0.605 μM, respectively. NVP-2 induces cell apoptosis.

Samuraciclib hydrochloride (CT7001 hydrochloride) is a potent, selective, ATP-competitive and orally active CDK7 inhibitor, with an IC₅₀ of 41 nM. Samuraciclib hydrochloride displays 45-, 15-, 230- and 30-fold selectivity over CDK1, CDK2 (IC₅₀ of 578 nM), CDK5 and CDK9, respectively. Samuraciclib hydrochloride inhibits the growth of breast cancer cell lines with GI₅₀ values between 0.2-0.3 µM. Samuraciclib hydrochloride has anti-tumor effects.

Toyocamycin (Vengicide) is an adenosine analog produced by Streptomyces diastatochromogenes, acts as an XBP1 inhibitor. Toyocamycin blocks RNA synthesis and ribosome function, and induces apoptosis. Toyocamycin affects IRE1α-XBP1 pathway, and inhibits XBP1 mRNA cleavage with an IC₅₀ value of 80 nM with affecting IRE1α auto-phosphorylation. Toyocamycin specifically inhibits CDK9 with an IC₅₀ value of 79 nM.

YKL-5-124 is a potent, selective, irreversible and covalent CDK7 inhibitor with IC₅₀s of 53.5 nM and 9.7 nM for CDK7 and CDK7/Mat1/CycH, respectively. YKL-5-124 is >100-fold greater selective for CDK7 than CDK9 and CDK2, and inactive against CDK12 and CDK13. YKL-5-124 induces a strong cell-cycle arrest, inhibits E2F-driven gene expression, and exhibits little effect on RNA polymerase II phosphorylation status.

Tambiciclib (GFH009, JSH-009) is an orally active, highly potent and selective CDK9 inhibitor (IC₅₀ = 1 nM), demonstrating >200-fold selectivity over other CDKs, >100-fold selectivity over DYRK1A/B, and excellent selectivity over 468 kinases/mutants. Tambiciclib demonstrates potent in vitro and in vivo antileukemic efficacy in acute myeloid leukemia (AML) mouse models by inhibiting RNA Pol II phosphorylation, downregulating MCL1 and MYC, and inducing apoptosis. Tambiciclib can be used for AML research.

Enitociclib ((+)-BAY-1251152; (+)-VIP152) is a selective CDK9 inhibitor (IC₅₀=3 nM) that inhibits transcriptional elongation by blocking Ser2/Ser5 phosphorylation of RNA polymerase II. Enitociclib specifically depletes key short-lived proteins such as c-MYC, MCL-1 and induces tumor cell apoptosis. Enitociclib also interferes with the production of enhancer RNAs (eRNA) and enhancer-promoter interactions, and downregulates oncogene expression at the epigenetic level. Enitociclib exerts synergistic effects with agents including Bortezomib (HY-10227), Lenalidomide (HY-A0003), Pomalidomide (HY-10984), Venetoclax (HY-15531) and Paclitaxel (HY-B0015), and even reverses paclitaxel resistance. Enitociclib serves as a vital research tool for various malignancies such as double-hit diffuse large B-cell lymphoma, multiple myeloma and pancreatic ductal adenocarcinoma.

AT7519 (AT7519M) as a potent inhibitor of CDKs, with IC₅₀s of 210, 47, 100, 13, 170, and <10 nM for CDK1, CDK2, CDK4 to CDK6, and CDK9, respectively.

Fadraciclib (CYC065) is a second-generation, orally available ATP-competitive inhibitor of CDK2/CDK9 kinases with IC₅₀s of 5 and 26 nM, respectively.

AZD-5438 is a potent CDK1, CDK2, and CDK9 inhibitor, with IC₅₀s of 16 nM, 6 nM, and 20 nM in cell-free assays, respectively. AZD-5438 shows less inhibition activity against GSK3β, CDK5 and CDK6 .

THAL-SNS-032 is a selective CDK9 PROTAC degrader. THAL-SNS-032 recruits CRBN to form a ternary complex with CDK9, thereby triggering ubiquitination and proteasomal degradation of CDK9. THAL-SNS-032 also induces the degradation of CDK1, CDK2 and CDK7. THAL-SNS-032 elevates pH2AX levels, reduces MCL1s expression, and activates caspase-3. THAL-SNS-032 induces cancer cell apoptosis, regulates transcription, and inhibits the replication of human cytomegalovirus (CMV) and SARS-CoV-2. THAL-SNS-032 can be used in research related to breast cancer, leukemia, cytomegalovirus infection and SARS-CoV-2 infection.