Multisite mutation of monomer survivin with enhanced effect on apoptosis regulation of breast cancer cells

被引:4
|
作者
Dai, Guoying [1 ,2 ,3 ]
Zheng, Wenyun [2 ,3 ,4 ]
Ma, Xingyuan [1 ]
Wang, Ping [1 ,2 ,3 ]
机构
[1] E China Univ Sci & Technol, Biomed Nanotechnol Ctr, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China
[2] Univ Minnesota, Dept Bioprod & Biosyst Engn, St Paul, MN 55108 USA
[3] Univ Minnesota, Inst Biotechnol, St Paul, MN 55108 USA
[4] E China Univ Sci & Technol, Sch Pharm, Shanghai Key Lab New Drug Design, Shanghai 200237, Peoples R China
关键词
Survivin; Apoptosis; Cell cycle regulation; Site-specific mutagenesis; Breast cancer; Protein engineering; CHROMOSOMAL PASSENGER COMPLEX; T34A MUTANT; EXPRESSION; PHOSPHORYLATION; PURIFICATION; INHIBITION; BOREALIN; THERAPY; PROTEIN; GENE;
D O I
10.1016/j.biopha.2014.11.015
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
Survivin is an important protein in regulating both cell apoptosis and proliferation. It has attracted growing attentions in recent years as a promising target for cancer therapy. Previous studies have revealed that monomeric survivin regulated apoptosis in a more significant way than the wild-type survivin that generally contains a large portion of its dimers. In order to investigate the roles of monomeric mutant survivin apoptosis and cell cycle regulation of human cancer cells, we developed and tested three dominant-negative mutants with multisite mutations (MSM) including TAT-survivin(34/101/102), TAT-survivin(34/117/101/102) and TAT-survivin(117/101/102). Results revealed that MSM mutants remained as monomers under ambient conditions, and induced cells (breast cancer Bcap-37 cells) apoptosis even more efficiently, primarily through the caspase-dependent and Bcl-2-related pathways, than non-monomeric mutants. We further identified that the TAT-survivin(34/101/102) and TAT-survivin(117/101/102) MSM significantly inhibited the proliferation of Bcap-37 cells and arrested cells in S and G(2)/M phases, while TAT-survivin(34/117/101/102) arrested cells in G(2)/M phase. It appeared to us that TAT-survivin(34/101/102) and TAT-survivin(117/101/102) also inhibited cell proliferation more significantly. These findings suggest that such MSM afford monomeric survivin with promising potentials for cancer therapy. (C) 2014 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码:111 / 118
页数:8
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