Ong Han Wee, de Silva Chandi, Avalani Krisha, Kwarcinski Frank, Mansfield Christopher R, Chirgwin Michael, Truong Anna, Derbyshire Emily R, Zutshi Reena, Drewry David H
Structural Genomics Consortium and Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.
Luceome Biotechnologies, LLC, 1665 East 18th Street, Suite 106, Tucson, Arizona 85719, United States.
ACS Med Chem Lett. 2023 Nov 27;14(12):1774-1784. doi: 10.1021/acsmedchemlett.3c00354. eCollection 2023 Dec 14.
kinases are increasingly recognized as potential novel antiplasmodial targets for the treatment of malaria, but only a small subset of these kinases have had structure-activity relationship (SAR) campaigns reported. Herein we report the discovery of CZC-54252 () as an inhibitor of five kinases PfARK1, PfARK3, PfNEK3, PfPK9, and PfPKB. 39 analogues were evaluated against all five kinases to establish SAR at three regions of the kinase active site. Nanomolar inhibitors of each kinase were discovered. We identified common and divergent SAR trends across all five kinases, highlighting substituents in each region that improve potency and selectivity for each kinase. Potent analogues were evaluated against the blood stage. Eight submicromolar inhibitors were discovered, of which demonstrated potent antiplasmodial activity (EC = 0.16 μM). Our results provide an understanding of features needed to inhibit each individual kinase and lay groundwork for future optimization efforts toward novel antimalarials.
激酶越来越被认为是治疗疟疾的潜在新型抗疟靶点,但只有一小部分这类激酶有结构活性关系(SAR)研究报道。在此,我们报告发现CZC-54252()是五种激酶PfARK1、PfARK3、PfNEK3、PfPK9和PfPKB的抑制剂。评估了39种类似物对所有五种激酶的活性,以确定激酶活性位点三个区域的SAR。发现了每种激酶的纳摩尔级抑制剂。我们确定了所有五种激酶共有的和不同的SAR趋势,突出了每个区域中可提高每种激酶效力和选择性的取代基。对强效类似物进行了血液阶段评估。发现了八种亚微摩尔级抑制剂,其中表现出强效抗疟活性(EC = 0.16 μM)。我们的结果有助于理解抑制每种激酶所需的特征,并为未来新型抗疟药的优化努力奠定基础。