INDUCTION OF APOPTOSIS BY THE BCL-2 HOMOLOG BAK

被引:686
作者
CHITTENDEN, T [1 ]
HARRINGTON, EA [1 ]
OCONNOR, R [1 ]
FLEMINGTON, C [1 ]
LUTZ, RJ [1 ]
EVAN, GI [1 ]
GUILD, BC [1 ]
机构
[1] IMPERIAL CANC RES FUND, LONDON WC2A 3PX, ENGLAND
关键词
D O I
10.1038/374733a0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
CELLS are eliminated in a variety of physiological settings by apoptosis, a genetically encoded process of cellular suicide(1,2). Apoptosis comprises an intrinsic cellular defence against tumorigenesis, which, when suppressed, may contribute to the development of malignancies(3). The bcl-2 oncogene, which is activated in follicular lymphomas, functions as a potent suppressor of apoptosis under diverse conditions(4). Here we describe the complementary DNA cloning and functional analysis of a new Bcl-2 homologue, Bak, which promotes cell death and counteracts the protection from apoptosis provided by Bcl-2. Moreover, enforced expression of Bak induces rapid and extensive apoptosis of serum-deprived fibroblasts. This raises the possibility that Bak is directly involved in activating the cell death machinery.
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页码:733 / 736
页数:4
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