CDK4 Inhibitor

Ryuvidine is a potent inhibitor of SET domain-containing protein 8(SETD8) with an IC₅₀ of 0.5 µM and suppresses monomethylation of H₄K₂₀. Ryuvidine also inhibits CDK4 with an IC₅₀ of 6.0 μM. Ryuvidine also inhibits KDM5A and blocks DNA synthesis. Ryuvidine has anticancer activity against tumors such as breast cancer. Ryuvidine improves arthritis.

AMG 925 is a potent, selective, and orally available FLT3/CDK4 dual inhibitor with IC₅₀s of 2±1 nM and 3±1 nM, respectively.

3-Isomangostin is a flavonoid compound that acts as an inhibitor of MTH1 and acetylcholinesterase, with an IC₅₀ of 52 nM against MTH1 and IC₅₀ values of 5.75 μM and 12.96 μM against AChE and BChE, respectively. 3-Isomangostin also inhibits human aldose reductase and CDK4/Cyclin D1 with IC₅₀ values of 3.48 μM and 15.6 μM, respectively. 3-Isomangostin inhibits polyol pathway flux, competes with 8-oxo-dGTP for binding to the MTH1 active site through hydrogen bonding and hydrophobic xanthone interactions, blocks cell cycle progression, reduces cancer cell viability, and exhibits growth inhibitory effects against both normal and penicillin-resistant Staphylococcus aureus. 3-Isomangostin is used in research on Alzheimer's disease, diabetic complications, Staphylococcus aureus infections, and colon cancer.

Abemaciclib metabolite M18 (LSN3106729), the metabolite of Abemaciclib (HY-16297A), is a CDK inhibitor with antitumor activity. Abemaciclib metabolite M18 and a CRBN ligand have been used to design PROTAC CDK4/6 degrader.

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.

Palbociclib-d₈ is a deuterium labeled Palbociclib. Palbociclib is a selective and orally active CDK4 and CDK6 inhibitor with IC₅₀s of 11 and 16 nM, respectively. Palbociclib has the potential for ER-positive and HER2-negative breast cancer research.

Dimethoxycurcumin (DiMC) is a curcuminoid compound found in Curcuma longa. Dimethoxycurcumin is also an orally active thioredoxin reductase inhibitor (IC₅₀ = 5.4 μM) and androgen receptor antagonist. Dimethoxycurcumin inhibits thioredoxin reductase, leading to oxidized thioredoxin accumulation, ROS production, DNA damage, glutathione depletion, mitochondrial membrane potential decrease, ATP depletion, S phase arrest, and apoptosis. Dimethoxycurcumin inhibits NF-κB, NADPH oxidase subunits, ATP synthase subunits, CDK4, cyclin-D1, FASN, ACC, and the IRS2-PI3K-Akt pathway, while activating AMPK, ERK, and JNK. Dimethoxycurcumin can be used for research on cancer, arsenic-induced hepatotoxicity, and tuberculosis.

Ironomycin is a derivative of Salinomycin (HY-15597). Ironomycin exhibits selective inhibitory activity against mantle cell lymphoma (MCL) cells. Ironomycin blocks the cell cycle and induces apoptosis and ferroptosis. Ironomycin induces double-strand DNA breaks and activates the unfolded protein response (UPR), particularly the IRE1α signaling pathway accumulation. The combination of Ironomycin with Ibrutinib (HY-10997) shows a synergistic effect. Ironomycin can be used for the study of MCL.

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.

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.

RRibociclib (LEE011) succinate hydrate is an ATP-competitive and orally active CDK4/6 inhibitor that crosses the blood-brain barrier with IC₅₀ values of 10 nM and 39 nM, respectively, and is over 1,000-fold less potent against the cyclin B/CDK1 complex.

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.

HEMTAC CDK4/6 degrader 1 is a PROTAC connected by ligands for HSP90 and CDK4/6 with a K_d value of 35.7 μM. HEMTAC CDK4/6 degrader 1 induces CDK4/6 degradation in B16F10 melanoma cells. HEMTAC CDK4/6 degrader 1 arrests cell cycle at G0/G1 phase and induces apoptosis. HEMTAC CDK4/6 degrader 1 can be used in research of cancer. HEMTAC CDK4/6 degrader 1 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

CDK4-IN-3 (Compound 389) is a potent irreversible cyclin-dependent kinase 4 (CDK4) inhibitor (IC₅₀=25 nM, >10-fold selective over CDK6). CDK4-IN-3 arrests the cell cycle at G₁ phase, and induces tumor cell apoptosis. CDK4-IN-3 is promising for research of solid tumors such as breast and lung cancers.

SRX3177 is a triple inhibitor of CDK4/6, PI3K, and BRD4, with IC₅₀s of <2.5 nM (CDK4), 3.3 nM (CDK6), 33 nM (BRD4 BD1), 89 nM (BRD4 BD2), 79 nM (PI3Kα), 83 nM (PI3Kδ), 3.18 μM (PI3Kγ) , respectively. SRX3177 blocks the interaction between the SARS-CoV-2 E protein and the BRD2/4 BD1 domain, restores E protein-attenuated NF-κB activity. SRX3177 exerts broad cytotoxic activity against cancer cells. SRX3177 can be used for the study of anti-SARS-CoV-2 and cancer.

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.

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.

Voruciclib hydrochloride is an orally active and selective CDK inhibitor with K_i values of 0.626 nM-9.1 nM. Voruciclib hydrochloride potently blocks CDK9, the transcriptional regulator of MCL-1. Voruciclib hydrochloride represses expression of MCL-1 in multiple models of diffuse large B-cell lymphoma (DLBCL).