期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 511, 期 3, 页码 700-704出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2019.02.107
关键词
Apoptosis; Beclin-1; Bcl-XL; FRET two-hybrid assays; Stoichiometry
资金
- National Natural Science Foundation of China [81572184]
- Fundamental Research Funds for the First Clinical Medicine College of Jinan University [2015108]
- Clinical Research Funds for the First Clinical Medicine College of Jinan University [2018006]
Binding of Bcl-XL to Beclin-1 reduces Beclin-l's capacity to induce autophagy. This report aims to explore whether this interaction affects Bcl-XL's anti-apoptotic function. Using fluorescence resonance energy transfer (FRET) two-hybrid assay to quantify the stoichiometry of Bcl-XL-Beclin-1 complex in living cells coexpressing Bcl-XL-CFP and Beclin-1-YFP, we showed that Bcl-XL bond to Beclin-1 to form heterooligomers whose stoichiometry increases from 1:1 to 2:1 or higher with the increasing relative expression level of Bcl-XL, indicating the multiple binding sites of Beclin-1 with Bcl-XL. Co-expression of Bcl-XL and Beclin-1 exhibited consistent anti-apoptotic ability against staurosporine (STS)-induced apoptosis with expression of Bcl-XL alone irrespective of the relative expression level between Beclin-1 and BcI-XL Collectively, Bcl-XL complexed with Beclin-1 maintains full anti-apoptotic ability independent of the stoichiometry of Bcl-XL-Beclin-1 complex. (C) 2019 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据