LEM4 confers tamoxifen resistance to breast cancer cells by activating cyclin D-CDK4/6-Rb and ERα pathway.

LEM4 confers tamoxifen resistance to breast cancer cells by activating cyclin D-CDK4/6-Rb and ERα pathway.
复制标题

LEM4 通过激活细胞周期蛋白 D-CDK4/6-Rb 和 ERα 途径赋予乳腺癌细胞他莫昔芬耐药性。

DOI:
10.1038/s41467-018-06309-8
复制
发表时间:
2018-10-09
影响因子:
16.6
通讯作者:
Zhu Z
Zhu Z
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Gao A;Sun T;Ma G;Cao J;Hu Q;Chen L;Wang Y;Wang Q;Sun J;Wu R;Wu Q;Zhou J;Liu L;Hu J;Dong JT;Zhu Z

文献摘要

参考文献

被引文献

相似文献

阐明他莫昔芬对雌激素受体α(ER)阳性乳腺癌耐药的分子事件具有重要的科学和治疗意义。在这里,我们报告了LEM4的过表达通过激活细胞周期蛋白D-CDK4/6轴和ERα信号使ER+乳腺癌细胞对他莫昔芬产生耐药。我们发现LEM4的过表达加速了肿瘤的生长。与LEM4相互作用稳定CDK4和Rb,促进Rb磷酸化和G1/S相变。LEM4耗尽或他莫昔芬和PD0332991联合治疗可显著逆转他莫昔芬的耐药性。此外,LEM4与Aurora-A和ERα相互作用并稳定,促进Aurora-A介导的ERα-Ser167的磷酸化,导致ERα的结合和反式激活活性增加。在接受内分泌治疗的ER+乳腺癌患者中,LEM4水平的升高与较差的无复发生存率相关。因此,LEM4是一个预后标志物,也是乳腺癌治疗的一个有吸引力的靶点。功能拮抗剂LEM4可克服三苯氧胺耐药。他莫昔芬耐药是治疗Era阳性乳腺癌的主要问题。在这里,作者表明,LEM4通过激活周期蛋白D-CDK4/6-Rb轴和ERA信号在内分泌耐药乳腺癌中赋予他莫昔芬耐药性。
The elucidation of molecular events that confer tamoxifen resistance to estrogen receptor α (ER) positive breast cancer is of major scientific and therapeutic importance. Here, we report that LEM4 overexpression renders ER+ breast cancer cells resistant to tamoxifen by activating the cyclin D-CDK4/6 axis and the ERα signaling. We show that LEM4 overexpression accelerates tumor growth. Interaction with LEM4 stabilizes CDK4 and Rb, promotes Rb phosphorylation and the G1/S phase transition. LEM4 depletion or combined tamoxifen and PD0332991 treatment significantly reverses tamoxifen resistance. Furthermore, LEM4 interacts with and stabilizes both Aurora-A and ERα, promotes Aurora-A mediated phosphorylation of ERα-Ser167, leading to increase in ERα DNA-binding and transactivation activity. Elevated levels of LEM4 correlates with poorer relapse-free survival in patients with ER+ breast cancer undergoing endocrine therapy. Thus, LEM4 represents a prognostic marker and an attractive target for breast cancer therapeutics. Functional antagonism of LEM4 could overcome tamoxifen resistance. Tamoxifen resistance is a major problem in the treatment of ERa positive breast cancer. Here, the authors show that LEM4 confers tamoxifen resistance by activating the cyclin D-CDK4/6-Rb axis and ERa signaling in endocrine-resistant breast cancer.
DOI: 10.1038/onc.2012.628
发表时间: 2014-01-30
期刊: Oncogene
影响因子: 8
作者:
通讯作者: --
DOI: 10.1200/jco.2005.01.172
发表时间: 2005-04-10
影响因子: 45.3
作者:
Gutierrez, MC;Detre, S;Dowsett, M
通讯作者: Dowsett, M
DOI: 10.4161/cc.21194
发表时间: 2012-09-01
期刊: CELL CYCLE
影响因子: 4.3
作者:
Holz, Marina K.
通讯作者: Holz, Marina K.
DOI: 10.1200/jco.2010.31.2231
发表时间: 2011-04-20
影响因子: 45.3
作者:
Desmedt, Christine;Di Leo, Angelo;Sotiriou, Christos
通讯作者: Sotiriou, Christos
DOI: 10.1007/978-1-4899-8032-8_7
发表时间: 2014
影响因子: --
作者:
Brachner, Andreas;Foisner, Roland
通讯作者: Foisner, Roland