AN ICE-LIKE PROTEASE IS A COMMON MEDIATOR OF APOPTOSIS INDUCED BY DIVERSE STIMULI IN HUMAN MONOCYTIC THP.1 CELLS

被引:146
作者
ZHU, HJ [1 ]
FEARNHEAD, HO [1 ]
COHEN, GM [1 ]
机构
[1] UNIV LEICESTER, MRC, TOXICOL UNIT, LEICESTER LE1 9HN, LEICS, ENGLAND
来源
FEBS LETTERS | 1995年 / 374卷 / 02期
关键词
APOPTOSIS; ICE-LIKE PROTEASES; THP.1; CELL; Z-VAL-ALA-ASP FLUOROMETHYLKETONE;
D O I
10.1016/0014-5793(95)01116-V
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
Apoptosis was induced in THP.1 cells, a human monocytic tumour cell line, by diverse stimuli including cyclo-heximide, thapsigargin, etoposide and staurosporine. Induction of apoptosis by all these stimuli, except etoposide, was enhanced in the presence of the trypsin-like protease inhibitor, N alpha-tosyl-L-lysinyl chloromethyl ketone (TLCK), Induction of apoptosis, assessed by morphological, flow cytometric and biochemical criteria, including proteolysis of poly(ADP-ribose) polymerase and cleavage of DNA to large kilobasepair fragments, was completely abrogated when cells were pretreated with an ICE-like protease inhibitor, Z-Val-Ala-Asp . fluoromethylketone. This suggested that an ICE homologue was a common mediator of apoptosis in THP.1 cells.
引用
收藏
页码:303 / 308
页数:6
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