Authors:
ML Anthony, M Zhao, KM Brindle
Journal name: 
J Biol Chem
Citation info: 
274(28):19686-19692
Abstract: 
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.
DOI: 
http://doi.org/10.1074/jbc.274.28.19686
Research group: 
Brindle Group
E-pub date: 
30 Jun 1999
Users with this publication listed: 
Kevin Brindle