AMPK-dependent degradation of TXNIP upon energy stress leads to enhanced glucose uptake via GLUT1.

AMPK-dependent degradation of TXNIP upon energy stress leads to enhanced glucose uptake via GLUT1.
复制标题

DOI:
10.1016/j.molcel.2013.01.035
复制
发表时间:
2013-03-28
期刊:
影响因子:
16
通讯作者:
Cantley, Lewis C.
Cantley, Lewis C.
中科院分区:
生物学1区
文献类型:
--
作者:
Wu, Ning;Zheng, Bin;Shaywitz, Adam;Dagon, Yossi;Tower, Christine;Bellinger, Gary;Shen, Che-Hung;Wen, Jennifer;Asara, John;McGraw, Timothy E.;Kahn, Barbara B.;Cantley, Lewis C.

文献摘要

参考文献

被引文献

相似文献

TXNIP是响应于葡萄糖升高而诱导的α-抑制蛋白家族蛋白。它已被证明提供了一个负反馈回路,以调节葡萄糖摄取到细胞中,虽然生化作用机制一直不清楚。在这里,我们报告说,TXNIP抑制葡萄糖摄取直接结合到葡萄糖转运蛋白,谷氨酸1,诱导谷氨酸1内化通过网格蛋白包被的坑,以及间接降低谷氨酸1 mRNA的水平。此外,我们表明,能量应激导致TXNIP磷酸化的AMP依赖性蛋白激酶(AMPK),导致其快速降解。TXNIP的这种抑制导致Glut 1功能的急性增加和Glut 1 mRNA(因此总蛋白水平)的增加,以用于长期适应。通过GLUT 1的葡萄糖内流在短期内恢复ATP/ADP比率,并最终诱导TXNIP蛋白的产生,从而在能量稳态重建后抑制葡萄糖摄取。
TXNIP is an α-arrestin family protein that is induced in response to glucose elevation. It has been shown to provide a negative feedback loop to regulate glucose uptake into cells, though the biochemical mechanism of action has been obscure. Here, we report that TXNIP suppresses glucose uptake directly by binding to the glucose transporter, Glut1, inducing Glut1 internalization through clathrin coated pits, as well as indirectly by reducing the level of Glut1 mRNA. In addition, we show that energy stress results in phosphorylation of TXNIP by AMP-dependent protein kinase (AMPK), leading to its rapid degradation. This suppression of TXNIP results in an acute increase in Glut1 function and an increase in Glut1 mRNA (hence total protein levels) for long-term adaptation. The glucose influx through GLUT1 restores ATP/ADP ratios in the short run and ultimately induces TXNIP protein production to suppress glucose uptake once energy homeostasis is reestablished.
DOI: 10.1016/j.cmet.2012.07.007
发表时间: 2012-08-08
期刊: Cell metabolism
影响因子: 29
作者:
Lerner AG;Upton JP;Praveen PV;Ghosh R;Nakagawa Y;Igbaria A;Shen S;Nguyen V;Backes BJ;Heiman M;Heintz N;Greengard P;Hui S;Tang Q;Trusina A;Oakes SA;Papa FR
通讯作者: Papa FR
DOI: 10.1158/0008-5472.can-04-2271
发表时间: 2005-06-01
期刊: CANCER RESEARCH
影响因子: 11.2
作者:
Jeon, JH;Lee, KN;Choi, I
通讯作者: Choi, I
DOI: 10.1016/j.bbrc.2004.01.047
发表时间: 2004-03-05
影响因子: 3.1
作者:
Kim, KY;Shin, SM;Choi, I
通讯作者: Choi, I
DOI: 10.1038/onc.2010.250
发表时间: 2010-09-09
期刊: ONCOGENE
影响因子: 8
作者:
Draheim, K. M.;Chen, H-B;Tao, Q.;Moore, N.;Roche, M.;Lyle, S.
通讯作者: Lyle, S.
DOI: 10.1016/0167-4781(94)90242-9
发表时间: 1994-09-13
期刊: BIOCHIMICA ET BIOPHYSICA ACTA-GENE STRUCTURE AND EXPRESSION
影响因子: --
作者:
CHEN, KS;DELUCA, HF
通讯作者: DELUCA, HF