Inhibition of phosphatidylcholine biosynthesis following induction of apoptosis in HL-60 cells

被引：120
|
作者：
Anthony, ML [1 ]
Zhao, M [1 ]
Brindle, KM [1 ]
机构：
[1] Univ Cambridge, Dept Biochem, Cambridge CB2 1GA, England
来源：
JOURNAL OF BIOLOGICAL CHEMISTRY | 1999年 / 274卷 / 28期
关键词：
D O I：
10.1074/jbc.274.28.19686
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Induction of apoptosis in HL-60 cells, using a variety of cytotoxic drugs, resulted, in all cases, in inhibition of CDP-choline:1,2-diacylglycerol choline phosphotransferase, leading to an accumulation of its substrate, CDP-choline, and inhibition of phosphatidylcholine biosynthesis. Incubation of the cells with phosphatidylcholine reduced the number displaying an apoptotic morphology following drug treatment, and this was inversely related to the degree to which the drugs inhibited phosphatidylcholine biosynthesis. Inhibition of choline phosphotransferase by two of the drugs, farnesol and chelerythrine, was shown to be due to direct inhibition of the enzyme, while inhibition by the other drugs, etoposide and camptothecin, could be explained by the intracellular acidification that followed induction of apoptosis.
引用
收藏
页码：19686 / 19692
页数：7
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