Cyclin D1-Cdk4 controls glucose metabolism independently of cell cycle progression.
Cyclin D1-Cdk4 controls glucose metabolism independently of cell cycle progression.
复制标题
DOI:
10.1038/nature13267
复制
发表时间:
2014-06-26
期刊:
影响因子:
64.8
通讯作者:
Puigserver, Pere
中科院分区:
文献类型:
--
作者:
Lee, Yoonjin;Dominy, John E.;Choi, Yoon Jong;Jurczak, Michael;Tolliday, Nicola;Camporez, Joao Paulo;Chim, Helen;Lim, Ji-Hong;Ruan, Hai-Bin;Yang, Xiaoyong;Vazquez, Francisca;Sicinski, Piotr;Shulman, Gerald I.;Puigserver, Pere
Insulin constitutes a major evolutionarily conserved hormonal axis for maintaining glucose homeostasis; dysregulation of this axis causes diabetes. PGC-1α links insulin signaling to the expression of glucose and lipid metabolic genes. GCN5 acetylates PGC-1α and suppresses its transcriptional activity, whereas SIRT1 deacetylates and activates PGC-1α. Although insulin is a mitogenic signal in proliferative cells, whether components of the cell cycle machinery contribute to insulin’s metabolic action is poorly understood. Herein, we report that insulin activates cyclin D1-CDK4, which, in turn, increases GCN5 acetyltransferase activity and suppresses hepatic glucose production independently of cell cycle progression. Through a cell-based high throughput chemical screen, we identified a CDK4 inhibitor that potently decreases PGC-1α acetylation. Insulin/GSK3β signaling induces cyclin D1 protein stability via sequestering cyclin D1 in the nucleus. In parallel, dietary amino acids increase hepatic cyclin D1 mRNA transcripts. Activated cyclin D1-CDK4 kinase phosphorylates and activates GCN5, which then acetylates and inhibits PGC-1α activity on gluconeogenic genes. Loss of hepatic cyclin D1 results in increased gluconeogenesis and hyperglycemia. In diabetic models, cyclin D1-CDK4 is chronically elevated and refractory to fasting/feeding transitions; nevertheless further activation of this kinase normalizes glycemia. Our findings show that insulin uses components of the cell cycle machinery in post-mitotic cells to control glucose homeostasis independently of cell division.
登录
查看更多内容
DOI:
10.1074/jbc.m111.316760
发表时间:
2012-01-20
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Jurczak MJ;Lee AH;Jornayvaz FR;Lee HY;Birkenfeld AL;Guigni BA;Kahn M;Samuel VT;Glimcher LH;Shulman GI
通讯作者:
Shulman GI
影响因子:
10.5
作者:
Diehl, JA;Zindy, F;Sherr, CJ
通讯作者:
Sherr, CJ
影响因子:
3.7
作者:
Macotela Y;Emanuelli B;Bång AM;Espinoza DO;Boucher J;Beebe K;Gall W;Kahn CR
通讯作者:
Kahn CR
影响因子:
50.3
作者:
Anders L;Ke N;Hydbring P;Choi YJ;Widlund HR;Chick JM;Zhai H;Vidal M;Gygi SP;Braun P;Sicinski P
通讯作者:
Sicinski P
影响因子:
3
作者:
Li, Dongmin;Ren, Wuchao;Lu, Shemin
通讯作者:
Lu, Shemin