CDK2 Inhibitor

(E/Z)-Zotiraciclib ((E/Z)-TG02) is an orally active inhibitor of CDK2, JAK2 and FLT3 with IC₅₀s of 13, 73 and 56 nM, respectively. (E/Z)-Zotiraciclib effectively inhibits the proliferation of cancer cells, it can be used for the research of cancer.

Olomoucine is an ATP competitive inhibitor of CDKs. Olomoucine is a purine (HY-34431) derivative and inhibits CDC2/cyclin B, Cdk2/cyclin A, Cdk2/cyclin E (both IC₅₀=7 μM), CDK/p35 kinase (IC₅₀=3 μM) and ERK1/p44 MAP kinase (IC₅₀=25 μM). Olomoucine regulates cell cycle and shows anti-melanin tumor activity.

AT7519 Hydrochloride is 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.

(S)-Roscovitine ((S)-Seliciclib; (S)-CYC202) is a potent and cross the blood-brain barrier CDKs inhibitor. (S)-Roscovitine shows neuroprotective efficacy. (S)-Roscovitine has the potential for the research of stroke.

Zotiraciclib (TG02; SB1317) is an orally active JAK2/FLT3/CDK2 inhibitor with IC₅₀ values of 13 nM, 73 nM and 56 nM, respectively. Zotiraciclib inhibits cancer cell proliferation, tumor growth and the activity of CYP2D6. Zotiraciclib exhibits high plasma protein binding rate, Caco-2 permeability and tissue distribution capacity, as well as metabolic stability in human and canine liver microsomes. Zotiraciclib achieves tumor growth inhibition in nude mouse models of colon cancer and lymphoma xenografts. Zotiraciclib can be used for research related to colon cancer, B-cell lymphoma, advanced leukemia, acute leukemia and multiple myeloma.

2,4,6-Trihydroxybenzoic acid is a CDK inhibitor that dose-dependently inhibits recombinant CDK1, CDK2, and CDK4 with IC₅₀ values of 580, 262, and 403 μM, respectively. 2,4,6-Trihydroxybenzoic acid is also a flavonoid metabolite. Cellular uptake of 2,4,6-Trihydroxybenzoic acid depends on functional SLC5A8. 2,4,6-Trihydroxybenzoic acid can be used in colorectal cancer-related research.

Daphnoretin (Dephnoretin; Thymelol) is a protein kinase C (PKC) activator that inhibits the expression of hepatitis B virus (HBV) surface antigen (HBsAg) and exhibits antiviral activity. Daphnoretin exerts its antitumor effects by inhibiting the activation of the PI3K/AKT signaling pathway and triggers the mitochondrial apoptosis pathway. Daphnoretin alleviates chondrocyte apoptosis and inflammatory responses by inhibiting endoplasmic reticulum stress and activation of the NLRP3 inflammasome. Daphnoretin regulates the differentiation and maturation of dendritic cells, inhibits their immunostimulatory function by downregulating the phosphorylation level of JNK, and thus exerts a protective effect in skin graft rejection.

RGB-286638 free base is a potent inhibitor of CDK and MAPK9. RGB-286638 free base inhibits the activities of cyclin T1-CDK9, cyclin B1-CDK1, cyclin E-CDK2, cyclin D1-CDK4, cyclin E-CDK3 and p35-CDK5, with IC₅₀ values of 1, 2, 3, 4, 5 and 5 nM, respectively. RGB-286638 free base inhibits GSK-3β and TAK1, with IC₅₀ values of 3 nM and 5 nM, respectively. RGB-286638 free base induces caspase-dependent Apoptosis in cells. RGB-286638 free base delays tumor growth in an orthotopic glioblastoma mouse model. RGB-286638 free base extends survival in multiple myeloma models. RGB-286638 free base can be used in research related to glioblastoma and multiple myeloma.

CDK2/4/6-IN-2 is a selective CDK2/4/6 inhibitor with IC₅₀ values <1 μM. CDK2/4/6-IN-2 inhibits cells proliferation and phosphorylation of retinoblastoma protein at Ser807/811 in breast cancer cells. CDK2/4/6-IN-2 can be used for the research of cancer, such as breast cancer.

NU6027 is a potent and ATP-competitive inhibitor of both CDK1 and CDK2, with K_is of 2.5 μM and 1.3 μM, respectively. NU6027 is also a potent inhibitor of ATR and enhances hydroxyurea and cisplatin cytotoxicity in an ATR-dependent manner.

CDK12-IN-6, a pyrazolotriazine, is a potent CDK12 inhibitor with an IC₅₀ of 1.19 μM at high ATP (2 mM). CDK12-IN-6 has no effect on CDK2/Cyclin E (IC₅₀>20 μM) and CDK9/Cyclin T1 (IC₅₀>20 μM) at high ATP (2 mM) (WO2021116178A1).

CDK4/6-IN-15 is an orally active and selective CDK4/6 inhibitor. CDK4/6-IN-15 potently inhibits cancer cells growth. CDK4/6-IN-15 arrests cell cycle at G1 phase and suppresses retinoblastoma tumour suppressor protein (Rb) phosphorylation at S780 and E2 factor (E2F)-regulated gene expression.

TMX-2039 is a pan-CDK inhibitor for both cell cycle CDKs (CDK1, CDK2, CDK4, CDK5 and CDK6) and transcriptional CDKs (CDK7 and CDK9), with IC₅₀s of 2.6, 1.0, 52.1, 0.5, 35.0, 32.5 and 25 nM, respectively. TMX-2039 acts as a Ligands for Target Protein for PROTACs.

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

CDK9-IN-13 (compound 38) is potent and selective CDK9 inhibitor, with an IC₅₀ of <3 nM. CDK9-IN-13 exhibits short half-lives in rodents.

Aristolochic acid D (Aristolochic acid-IVa) is an orally active PDE2 (IC₅₀: 4.673 μM) and CDK2 (IC₅₀: 25 μM) inhibitor that can be isolated from Aristolochia indica L. Aristolochic acid D exhibits anti-inflammatory activity and is non-carcinogenic and non-nephrotoxic. Aristolochic acid D can be used in the research of inflammation and tumor-related diseases.

Isosilybin B is a flavonolignan. Isosilybin B can be isolated from Silybum marianum. Isosilybin B can regulate cell cycle-related proteins (e.g., reduce cyclins (D3, D1, A, E), Cdk4, Cdk2, Cdc25A), and activate Caspases (Caspase-9 and Caspase-3). Isosilybin B can promote Apoptosis, reduce androgen receptor (AR) and PSA. Isosilybin B has anticancer activity against prostate cancer.

CDK2-IN-31 is a CCNE1:CDK2 complex inhibitor with an IC₅₀ of 0.13 μM. CDK2-IN-31 binds to a cryptic allosteric pocket at the CCNE1:CDK2 interface, inducing structural rearrangements of the CDK2 A-loop that disrupt the kinase's active conformation and interfere with substrate binding. CDK2-IN-31 inhibits phosphorylation of retinoblastoma protein 1 (RB1) in CCNE1-dependent ovarian cancer cells. CDK2-IN-31 impairs coenrichment of protein PRC1 with CCNE1-N112C:CDK2 complexes. CDK2-IN-31 can be used for the research of ovarian cancer.

NU6140 is a selective CDK2-cyclin A inhibitor (IC₅₀, 0.41 μM), exhibits 10- to 36-fold selectivity over other CDKs. NU6140 also potently inhibits Aurora A and Aurora B, with IC₅₀s of 67 and 35 nM, respectively. Enhances the apoptotic effect, with anti-cancer activity.

CDK12-IN-E9 is a potent and selective covalent CDK12 inhibitor and a non-covalent CDK9 inhibitor, while avoiding ABC transporter-mediated efflux. CDK12-IN-E9 has weak binding ability to CDK7/CyclinH complex with an IC₅₀> 1 μM.