PIM2 interacts with tristetraprolin and promotes breast cancer tumorigenesis.

PIM2 interacts with tristetraprolin and promotes breast cancer tumorigenesis.
复制标题

PIM2与三四脯氨酸相互作用促进乳腺癌发生

DOI:
10.1002/1878-0261.12192
复制
发表时间:
2018-05
期刊:
影响因子:
6.6
通讯作者:
Yu Z
Yu Z
中科院分区:
医学2区
文献类型:
--
作者:
Ren C;Yang T;Qiao P;Wang L;Han X;Lv S;Sun Y;Liu Z;Du Y;Yu Z

文献摘要

参考文献

被引文献

相似文献

Tristetraprolin(TTP)是一种富含Au的元素结合蛋白,可调节mRNA稳定性,在癌症中发挥重要作用。TTP在乳腺癌中调节的机制知之甚少。使用多种生物化学方法,我们发现,前病毒插入小鼠淋巴瘤2(PIM 2)是一种新的TTP的结合伴侣。有趣的是,PIM 2降低TTP蛋白水平,与其激酶活性无关。PIM 2相反靶向TTP蛋白,通过泛素-蛋白酶体途径降解。此外,免疫组化染色显示,PIM 2和TTP蛋白水平在人乳腺癌样品中呈负相关。事实上,PIM 2过表达在体外解除了TTP介导的对乳腺癌细胞增殖和迁移的抑制,并在体内促进了乳腺肿瘤异种移植物的生长。这些发现证明了PIM 2-TTP复合物在乳腺癌肿瘤发生中的重要作用,表明PIM 2可能代表乳腺癌治疗的潜在治疗靶点。
Tristetraprolin (TTP) is an AU‐rich element‐binding protein that regulates mRNA stability and plays important roles in cancer. The mechanisms by which TTP is regulated in breast cancer are poorly understood. Using multiple biochemical approaches, we found that proviral insertion in murine lymphomas 2 (PIM2) is a novel binding partner of TTP. Interestingly, PIM2 decreased TTP protein levels independent of its kinase activity. PIM2 instead targeted TTP protein for degradation via the ubiquitin‐proteasome pathway. Furthermore, immunohistochemical staining showed that PIM2 and TTP protein levels were negatively correlated in human breast cancer samples. Indeed, PIM2 overexpression de‐repressed TTP‐mediated inhibition of breast cancer cell proliferation and migration in vitro and promoted breast tumor xenograft growth in vivo. These findings demonstrate an important role for the PIM2‐TTP complex in breast cancer tumorigenesis, suggesting that PIM2 may represent a potential therapeutic target for breast cancer treatment.
DOI: 10.1016/j.tips.2016.07.002
发表时间: 2016-10
影响因子: 13.8
作者:
Patial, Sonika;Blackshear, Perry J.
通讯作者: Blackshear, Perry J.
DOI: 10.1182/blood-2013-01-481457
发表时间: 2013-08-29
期刊: BLOOD
影响因子: 20.3
作者:
Lu, Jing;Zavorotinskaya, Tatiana;Garcia, Pablo D.
通讯作者: Garcia, Pablo D.
DOI: 10.1016/j.bbagrm.2013.02.003
发表时间: 2013-06
影响因子: 4.7
作者:
Brooks, Seth A.;Blackshear, Perry J.
通讯作者: Blackshear, Perry J.
DOI: 10.1128/mcb.00643-14
发表时间: 2014-12-01
影响因子: 5.3
作者:
Long Vo Ngoc;Wauquier, Corinne;Gueydan, Cyril
通讯作者: Gueydan, Cyril
DOI: 10.1074/jbc.m115.638221
发表时间: 2015-08-14
影响因子: 4.8
作者:
Deng, Guoping;Nagai, Yasuhiro;Greene, Mark I.
通讯作者: Greene, Mark I.