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RESEARCH PRODUCT

MCC1019, a selective inhibitor of the Polo-box domain of Polo-like kinase 1 as novel, potent anticancer candidate

Edmond FleischerVincent Kam Wai WongThorsten BergSara AbdelfatahThomas EfferthAnette KlingerLi Jun YangQi HuangSami HamdounHenry Johannes GretenAngela Berg

subject

PBD Polo box domainMTD maximal tolerance doseCDC25 cell division cycle 25HIF-1α hypoxia-inducible factor 1 αMST microscale thermophoresisIC50 50% inhibition concentrationMFP M phase promoting factorPARP-1 poly(ADP-ribose) polymerase-10302 clinical medicineFOXO forkhead box ONec-1 necrostatin 1CDC2 cell division cycle protein 2 homologGeneral Pharmacology Toxicology and PharmaceuticsMitotic catastropheCDK cyclin-dependent kinase0303 health sciencesChemistryPolo-like kinaseMono-targeted therapyCell cycleBUBR1 budding uninhibited by benzimidazole-related 1Polo box domain030220 oncology & carcinogenesisPLK1 Polo-like kinaseNecroptosisSpindle damagePLK1IHC immunohistochemistryOriginal articleNecroptosisCell cyclePLK1APC/C anaphase-promoting complex/cyclosomePLK3ABC avidin-biotin complexPI propidium iodide03 medical and health sciencesFBS fetal bovine serumPDB Protein Data BankKd the dissociation constantKinase activity030304 developmental biologyAkt/PKB signaling pathwayCell growthlcsh:RM1-950LC3 light chain 3lcsh:Therapeutics. PharmacologyCancer researchDAPKs death-associated protein kinase3-MA 3-methyladenineDAPI 4′6-diamidino-2-phenylindoleSAC spindle assembly checkpoint

description

Polo-like kinase (PLK1) has been identified as a potential target for cancer treatment. Although a number of small molecules have been investigated as PLK1 inhibitors, many of which showed limited selectivity. PLK1 harbors a regulatory domain, the Polo box domain (PBD), which has a key regulatory function for kinase activity and substrate recognition. We report on 3-bromomethyl-benzofuran-2-carboxylic acid ethyl ester (designated: MCC1019) as selective PLK1 inhibitor targeting PLK1 PBD. Cytotoxicity and fluorescence polarization-based screening were applied to a library of 1162 drug-like compounds to identify potential inhibitors of PLK1 PBD. The activity of compound MC1019 against the PLK1 PBD was confirmed using fluorescence polarization and microscale thermophoresis. This compound exerted specificity towards PLK1 over PLK2 and PLK3. MCC1019 showed cytotoxic activity in a panel of different cancer cell lines. Mechanistic investigations in A549 lung adenocarcinoma cells revealed that MCC1019 induced cell growth inhibition through inactivation of AKT signaling pathway, it also induced prolonged mitotic arrest—a phenomenon known as mitotic catastrophe, which is followed by immediate cell death via apoptosis and necroptosis. MCC1019 significantly inhibited tumor growth in vivo in a murine lung cancer model without affecting body weight or vital organ size, and reduced the growth of metastatic lesions in the lung. We propose MCC1019 as promising anti-cancer drug candidate.

yearjournalcountryeditionlanguage
2019-02-01Acta Pharmaceutica Sinica B
10.1016/j.apsb.2019.02.001http://www.sciencedirect.com/science/article/pii/S221138351830827X