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[2].In Vitro: Plogosertib (CYC140) selectively inhibits PLK1 (IC50: 3 nM), and is >50 fold more potent against PLK2 and PLK3 (IC50s: 149 nM and 393 nM, respectively)[2].
Plogosertib (0-4 μΜ, 2 h) reduces phosphorylation of the PLK1 substrate, pSer4-nucleophosmin (p-NPM) in KYSE-410 cells[2].
Plogosertib (100 nM, 24 h) increases in the proportion of mitotic cells, with increased monopolar spindles in HeLa cells[2].
Plogosertib (72 h) preferentially inhibits cell proliferation in malignant cell lines (IC50s: 14-21 nM), and is less toxic against none-malignant cell lines (IC50: 82 nM)[2].In Vivo: Plogosertib (CYC140, oral administration, 40 mg/kg, qd 5/2/5) inhibits tumor growth in preclinical xenograft models of acute leukemia and solid tumors[2].Plogosertib (Coumpond A7, 1 mg/kg, mouse) shows pharmacokinetic parameters: Cmax (453 ng/mL), AUC (377 hr?ng/mL), Cl (2445 mL/h/kg).