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从小隐孢子虫和刚地弓形虫中发现钙依赖性蛋白激酶1(CDPK1)的强效和选择性抑制剂

Discovery of Potent and Selective Inhibitors of Calcium-Dependent Protein Kinase 1 (CDPK1) from C. parvum and T. gondii.

作者信息

Murphy Ryan C, Ojo Kayode K, Larson Eric T, Castellanos-Gonzalez Alejandro, Perera B Gayani K, Keyloun Katelyn R, Kim Jessica E, Bhandari Janhavi G, Muller Natascha R, Verlinde Christophe L M J, White A Clinton, Merritt Ethan A, Van Voorhis Wesley C, Maly Dustin J

机构信息

Department of Chemistry, University of Washington.

出版信息

ACS Med Chem Lett. 2010 Oct 14;1(7):331-335. doi: 10.1021/ml100096t.

Abstract

The protozoans Cryptosporidium parvum and Toxoplasma gondii are parasites of major health concern to humans. Both parasites contain a group of calcium-dependent protein kinases (CDPKs), which are found in plants and ciliates but not in humans or fungi. Here we describe a series of potent inhibitors that target CDPK1 in C. parvum (CpCDPK1) and T. gondii (TgCDPK1). These inhibitors are highly selective for CpCDPK1 and TgCDPK1 over the mammalian kinases SRC and ABL. Furthermore, they are able to block an early stage of C. parvum invasion of HCT-8 host cells, which is similar to their effects on T. gondii invasion of human fibroblasts.

摘要

原生动物微小隐孢子虫和刚地弓形虫是对人类健康构成重大威胁的寄生虫。这两种寄生虫都含有一组钙依赖性蛋白激酶(CDPKs),这类激酶存在于植物和纤毛虫中,但在人类或真菌中不存在。在此,我们描述了一系列针对微小隐孢子虫(CpCDPK1)和刚地弓形虫(TgCDPK1)中CDPK1的强效抑制剂。这些抑制剂对CpCDPK1和TgCDPK1的选择性远高于哺乳动物激酶SRC和ABL。此外,它们能够阻断微小隐孢子虫入侵HCT - 8宿主细胞的早期阶段,这与它们对刚地弓形虫入侵人成纤维细胞的作用相似。

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