Dosage of Dyrk1a shifts cells within a p21-cyclin D1 signaling map to control the decision to enter the cell cycle.

Dosage of Dyrk1a shifts cells within a p21-cyclin D1 signaling map to control the decision to enter the cell cycle.
复制标题

DOI:
10.1016/j.molcel.2013.09.009
复制
发表时间:
2013-10-10
期刊:
影响因子:
16
通讯作者:
Meyer, Tobias
Meyer, Tobias
中科院分区:
生物学1区
文献类型:
--
作者:
Chen, Jia-Yun;Lin, Jia-Ren;Tsai, Feng-Chiao;Meyer, Tobias

文献摘要

参考文献

被引文献

相似文献

哺乳动物细胞具有显著的补偿杂合基因损失或额外基因拷贝的能力。一个例外是唐氏综合症(DS),其中21号染色体的第三个拷贝介导神经发生缺陷并降低实体瘤的发生频率。本研究结合活细胞成像和单细胞分析表明,增加21号染色体定位的Dyrk1a剂量通过直接磷酸化和降解周期蛋白D1 (CycD1)急剧增加G1细胞周期持续时间。ds衍生的成纤维细胞表现出类似的细胞周期变化,被Dyrk1a抑制逆转。此外,Dyrk1a活性的降低会增加CycD1的表达,从而导致分化,一个细胞亚群加速增殖,另一个细胞亚群通过共同稳定CycD1和CDK抑制剂p21来抑制增殖。因此,Dyrk1a的剂量在p21-CycD1信号图谱中重新定位细胞,指导每个细胞增殖或遵循两个不同的细胞周期退出途径,其特征是高或低CycD1和p21水平。
Mammalian cells have a remarkable capacity to compensate for heterozygous gene loss or extra gene copies. One exception is Down syndrome (DS) where a third copy of chromosome 21 mediates neurogenesis defects and lowers the frequency of solid tumors. Here we combine live-cell imaging and single-cell analysis to show that increased dosage of chromosome 21-localized Dyrk1a steeply increases G1 cell cycle duration through direct phosphorylation and degradation of cyclin D1 (CycD1). DS-derived fibroblasts showed analogous cell cycle changes that were reversed by Dyrk1a inhibition. Furthermore, reducing Dyrk1a activity increased CycD1 expression to force a bifurcation, with one subpopulation of cells accelerating proliferation and the other arresting proliferation by co-stabilizing CycD1 and the CDK inhibitor p21. Thus, dosage of Dyrk1a repositions cells within a p21-CycD1 signaling map, directing each cell to either proliferate or to follow two distinct cell cycle exit pathways characterized by high or low CycD1 and p21 levels.
DOI: 10.1093/hmg/10.18.1915
发表时间: 2001-09-01
影响因子: 3.5
作者:
Altafaj, X;Dierssen, M;Estivill, X
通讯作者: Estivill, X
DOI: 10.4161/cc.21404
发表时间: 2012-09-15
期刊: Cell cycle (Georgetown, Tex.)
影响因子: --
作者:
Becker W
通讯作者: Becker W
DOI: 10.1016/s0140-6736(99)05264-2
发表时间: 2000-01-15
期刊: LANCET
影响因子: 168.9
作者:
Hasle, H;Clemmensen, IH;Mikkelsen, M
通讯作者: Mikkelsen, M
DOI: 10.1016/s0092-8674(04)00300-9
发表时间: 2004-04-16
期刊: CELL
影响因子: 64.5
作者:
Ren, SJ;Rollins, BJ
通讯作者: Rollins, BJ
DOI: 10.1016/j.cell.2007.12.033
发表时间: 2008-02-08
期刊: CELL
影响因子: 64.5
作者:
Sakaue-Sawano, Asako;Kurokawa, Hiroshi;Miyawaki, Atsushi
通讯作者: Miyawaki, Atsushi