Cloning, Enzyme Characterization of Recombinant Human Eg5 and the Development of a New Inhibitor(Medicinal Chemistry)
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概要
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The microtubule-dependent motor protein Eg5 is essential for the development and function of the mitotic spindle. Now it has become an anti-mitotic drug target in high throughput screening for anticancer dugs in vitro. Here is a protocol for cloning, expression and purification of a human Eg5 that codes for motor and linker domain in Escherichia coli BL21 (DE3) cells. The effects of temperature, pH, metal ions and DMSO on ATPase activity were investigated. A new compound CPUYL064 showed good inhibitory effect against Eg5 (IC_<50> value, 100 nM). It inhibited the proliferation of human hepatocellular liver carcinoma cell line HepG2 in a dose- and time-dependent manner. CPUYL064 induced a clear G_2/M phase arrest and caused the monastral spindle in HepG2 cells. Induction of apoptosis was further confirmed by changes in membrane phospholipids, changes in mitochondrial membrane potential and by detection of DNA fragmentation. These results indicate that CPUYL064 could be developed as a new, potent mitotic arrest compound.
- 公益社団法人日本薬学会の論文
- 2008-07-01
著者
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You Qi-dong
Jiangsu Key Lab. Of Carcinogenesis And Intervention (china Pharmaceutical University) People's
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You Qi-dong
Jiangsu Key Laboratory Of Carcinogenesis And Intervention China Pharmaceutical University
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YOU Qi-Dong
Department of Medicinal Chemistry, China Pharmaceutical University
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Wu Wutong
School Of Life Sci. And Technol. China Pharmaceutical Univ.
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Yang Lei
School Of Life Sci. And Technol. China Pharmaceutical Univ.
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JIANG Cheng
Department of Medicinal Chemistry, China Pharmaceutical University
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LIU Fei
Department of Medicinal Chemistry, China Pharmaceutical University
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WU Wu-Tong
School of Life Science and Technology, China Pharmaceutical University
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Liu Fei
Department Of Chemistry University Of Science And Technology Of China
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