INHIBITION OF ISOPRENOID BIOSYNTHESIS INDUCES APOPTOSIS IN HUMAN PROMYELOCYTIC HL-60 CELLS

被引:143
作者
PEREZSALA, D [1 ]
MOLLINEDO, F [1 ]
机构
[1] CSIC,CTR INVEST BIOL,C VELAZQUEZ 144,E-28006 MADRID,SPAIN
关键词
D O I
10.1006/bbrc.1994.1359
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
Protein isoprenylation is a posttranslational modification that facilitates membrane association and biological activity of a number of proteins. Mevalonate is the precursor of cellular sterols as well as of isoprenoid lipids involved in protein modification. In this study we show that HL-60 cells treated with lovastatin, an inhibitor of mevalonate synthesis, exhibit alterations in growth and morphology, as well as changes in the subcellular distribution of isoprenylated proteins like nuclear lamin A and p21 Ras. Moreover, they are induced to die via apoptosis, as evidenced by the appearance of a typical DNA fragmentation pattern. Lovastatin-induced DNA fragmentation can be specifically prevented by mevalonate. The failure of several products of the mevalonate pathway, including cholesterol, to overcome lovastatin effect, points to the involvement of isoprenylated proteins in the mechanisms suppressing cell death. (C) 1994 Academic Press Inc.
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收藏
页码:1209 / 1215
页数:7
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