PIM2-mediated phosphorylation of hexokinase 2 is critical for tumor growth and paclitaxel resistance in breast cancer.
PIM2-mediated phosphorylation of hexokinase 2 is critical for tumor growth and paclitaxel resistance in breast cancer.
复制标题
PIM2 介导的己糖激酶 2 磷酸化对于乳腺癌的肿瘤生长和紫杉醇耐药性至关重要
DOI:
10.1038/s41388-018-0386-x
复制
发表时间:
2018-11
期刊:
影响因子:
8
通讯作者:
Yu Z
中科院分区:
文献类型:
--
作者:
Yang T;Ren C;Qiao P;Han X;Wang L;Lv S;Sun Y;Liu Z;Du Y;Yu Z
Hexokinase-II (HK2) is a key enzyme involved in glycolysis, which is required for breast cancer progression. However, the underlying post-translational mechanisms of HK2 activity are poorly understood. Here, we showed that Proviral Insertion in Murine Lymphomas 2 (PIM2) directly bound to HK2 and phosphorylated HK2 on Thr473. Biochemical analyses demonstrated that phosphorylated HK2 Thr473 promoted its protein stability through the chaperone-mediated autophagy (CMA) pathway, and the levels of PIM2 and pThr473-HK2 proteins were positively correlated with each other in human breast cancer. Furthermore, phosphorylation of HK2 on Thr473 increased HK2 enzyme activity and glycolysis, and enhanced glucose starvation-induced autophagy. As a result, phosphorylated HK2 Thr473 promoted breast cancer cell growth in vitro and in vivo. Interestingly, PIM2 kinase inhibitor SMI-4a could abrogate the effects of phosphorylated HK2 Thr473 on paclitaxel resistance in vitro and in vivo. Taken together, our findings indicated that PIM2 was a novel regulator of HK2, and suggested a new strategy to treat breast cancer.
登录
查看更多内容
影响因子:
6.6
作者:
Ren C;Yang T;Qiao P;Wang L;Han X;Lv S;Sun Y;Liu Z;Du Y;Yu Z
通讯作者:
Yu Z
影响因子:
7
作者:
Xiong X;Wen YA;Mitov MI;C Oaks M;Miyamoto S;Gao T
通讯作者:
Gao T
DOI:
10.1083/jcb.201503044
发表时间:
2015-08-31
期刊:
The Journal of cell biology
影响因子:
--
作者:
Xia HG;Najafov A;Geng J;Galan-Acosta L;Han X;Guo Y;Shan B;Zhang Y;Norberg E;Zhang T;Pan L;Liu J;Coloff JL;Ofengeim D;Zhu H;Wu K;Cai Y;Yates JR;Zhu Z;Yuan J;Vakifahmetoglu-Norberg H
通讯作者:
Vakifahmetoglu-Norberg H
影响因子:
20.3
作者:
Lu, Jing;Zavorotinskaya, Tatiana;Garcia, Pablo D.
通讯作者:
Garcia, Pablo D.
影响因子:
4.8
作者:
Yu, Zhenhai;Zhao, Xiaoping;Huang, Gang
通讯作者:
Huang, Gang