PLK1 Inhibitor

Volasertib (BI 6727) is an orally active, highly potent and ATP-competitive Polo-like kinase 1 (PLK1) inhibitor with an IC₅₀ of 0.87 nM. Volasertib inhibits PLK2 and PLK3 with IC₅₀s of 5 and 56 nM, respectively. Volasertib induces mitotic arrest and apoptosis. Volasertib, a dihydropteridinone derivative, shows marked antitumor activity in multiple cancer models.

BI 2536 is a dual PLK1 and BRD4 inhibitor with IC₅₀s of 0.83 and 25 nM, respectively. BI-2536 suppresses IFNB (encoding IFN-β) gene transcription.

ARV-825 is a BET protein PROTAC degrader that recruits cereblon, and it targets BRD2, BRD3, and BRD4 for degradation via the ubiquitin-proteasome pathway. ARV-825 downregulates c-MYC, PLK1, MYCN, CDK4/6, JAK2, pSTAT3/5, PIM1, and Bcl-xL, upregulates p21 and p27, and modulates H3K27Ac-mediated transcription, the G2/M checkpoint, the Wnt/β-catenin pathway, and amino acid transport pathways. ARV-825 induces G1 phase cell cycle arrest, caspase 3/PARP-mediated apoptosis, DNA damage, and reactive oxygen species (ROS) production, reduces mitochondrial respiration, and simultaneously inhibits cell proliferation, clonogenic growth, and cell migration. ARV-825 is used in research on gastric cancer, leukemia, neuroblastoma, and cholangiocarcinoma.

NMS-1286937 is a potent, selective and orally available PLK1 inhibitor, with an IC₅₀ of 2 nM.

GSK461364 is a selective, reversible and ATP-competitive Polo-like kinase 1 (PLK1) inhibitor with a K_i value of 2.2 nM.

Rigosertib (ON-01910) is a multi-kinase inhibitor and a selective anti-cancer agent, which induces apoptosis by inhibition the PI3 kinase/Akt pathway, promots the phosphorylation of histone H2AX and induces G2/M arrest in cell cycle. Rigosertib is a selective and non-ATP-competitive inhibitor of PLK1 with an IC₅₀ of 9 nM.

ON1231320 is a highly specific polo like kinase 2 (PLK2) inhibitor with an IC₅₀ of 0.31 μM. ON1231320 blocks tumor cell cycle progression in the G2/M phase in mitosis, causing apoptotic cell death. ON1231320, an arylsulfonyl pyrido-pyrimidinone, has antitumor activity.

TAK-960 is an orally available, selective inhibitor of polo-like kinase 1 (PLK1), with an IC₅₀ of 0.8 nM. TAK-960 also shows inhibitory activities against PLK2 and PLK3, with IC₅₀s of 16.9 and 50.2 nM, respectively. TAK-960 inhibits proliferation of multiple cancer cell lines and exhibits significant efficacy against multiple tumor xenografts.

HMN-214, an orally bioavailable proagent of HMN-176, is an inhibitor of polo-like kinase-1 (plk1), with antitumor activity.

GW843682X is a selective, ATP-competitive inhibitor of PLK1 and PLK3, with IC₅₀s of 2.2 nM and 9.1 nM, respectively, and is also >100-fold selective against ～30 other kinases.

Ro3280 is a potent, highly selective inhibitor of PLK1 with an IC₅₀ and a K_d of 3 nM and 0.09 nM, respectively, and nearly has no effect on PLK2 and PLK3.

MLN0905 is a potent, orally active Polo-like kinase 1 (PLK1) inhibitor. MLN0905 has inhibitory potency against PLK1 with an IC₅₀ value of 2 nM. MLN0905 can be used for the research of cancer.

Rigosertib sodium (ON-01910 sodium) is a multi-kinase inhibitor and a selective anti-cancer agent, which induces apoptosis by inhibition the PI3K/Akt pathway, promotes the phosphorylation of histone H2AX and induces G2/M arrest in cell cycle. Rigosertib sodium is a selective and non-ATP-competitive inhibitor of PLK1 with an IC₅₀ of 9 nM.

TC-S 7005 is a Polo-like kinases (Plks) inhibitor with IC₅₀s of 4 nM, 24 nM and 214 nM for Plk2, Plk3, and Plk1, respectively.

Poloxin is a non-ATP competitive Polo-like Kinase 1 (PLK1) inhibitor that targets the polo-box domain, with an IC₅₀ of appr 4.8 μM.

Telocinobufagin (Telobufotoxin; Telocinobufogenin) is an orally active bufadienolide with potential anti-tumor effects. Telocinobufagin exerts its anti-cancer effects on non-small cell carcinoma, osteosarcoma, thyroid cancer, breast cancer and head and neck squamous cell carcinoma by inhibiting the STAT3, JAK2/STAT3, LARP1-mTOR, PI3K/Akt/Snail and PLK1 pathways, and can also induce tumor cell apoptosis. Telocinobufagin enhances the Th1 immune response and protects against Salmonella typhimurium infection. Telocinobufagin has a strong cardiac-stimulating effect by inhibiting the activity of Na⁺/K⁺-ATPase, and it can promote renal fibrosis. Telocinobufagin demonstrates non-opioid analgesic effects in various acute pain models.

Plogosertib (CYC140) is a selective, potent, and orally active ATP-competitive PLK1 inhibitor (IC₅₀: 3 nM). Plogosertib is an anti-cancer agent with anti-proliferative activity. Plogosertib can be used in the research of several tumors, including esophageal, gastric, leukemia, non–small cell lung cancer, ovarian, and squamous cell cancers.

SBE13 Hydrochloride is a potent and selective Plk1 inhibitor, with an IC₅₀ of 200 pM; SBE13 Hydrochloride poorly inhibits Plk2 (IC₅₀>66 μM) or Plk3 (IC₅₀=875 nM).

Lasiokaurin is an anticancer agent. Lasiokaurin can be isolated from Rabdosia rubescens (Hemsl.) H. Hara. Lasiokaurin inhibits the function of the PDPK1-AKT axis, with a K_d value of 75.93 μM for PDPK1. Lasiokaurin inhibits mTOR, STAT3, MAPK and NF-κB. Lasiokaurin reduces the mRNA and protein expression levels of PLK1. Lasiokaurin decreases DNA synthesis levels, induces cell Apoptosis, and regulates Autophagy processes. Lasiokaurin inhibits tumor growth in xenograft models. Lasiokaurin can be used in research related to nasopharyngeal carcinoma, triple-negative breast cancer.

PLK1/BRD4-IN-5 (Compound SC10) is an orally active PLK1 and BRD4 inhibitor with IC₅₀ values of 0.3  nM and 60.8  nM, respectively. PLK1/BRD4-IN-5 can induce MV4-11 cell block in S phase and apoptosis) in a dose-dependent manner. PLK1/BRD4-IN-5 can be used in cancer research.