Cyclin K regulates prereplicative complex assembly to promote mammalian cell proliferation.

Cyclin K regulates prereplicative complex assembly to promote mammalian cell proliferation.
复制标题

Cyclin K 调节复制前复合体组装以促进哺乳动物细胞增殖

DOI:
10.1038/s41467-018-04258-w
复制
发表时间:
2018-05-14
影响因子:
16.6
通讯作者:
Li Q
Li Q
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lei T;Zhang P;Zhang X;Xiao X;Zhang J;Qiu T;Dai Q;Zhang Y;Min L;Li Q;Yin R;Ding P;Li N;Qu Y;Mu D;Qin J;Zhu X;Xiao ZX;Li Q

文献摘要

参考文献

被引文献

相似文献

为了维持细胞的增殖和基因组的稳定,必须严格控制G1期前复制复合物(pre-RC)的组装。在G2/M和S期防止前RC形成的机制是很好理解的,而细胞如何确保在G1期间有效的前RC组装尚不清楚。在这里,我们报告,细胞周期蛋白K调节前RC的形成。我们发现,细胞周期蛋白K的表达与细胞增殖呈正相关,并敲低细胞周期蛋白K或其同源激酶CDK 12阻止组装前RC在G1期。从机制上讲,我们发现,细胞周期蛋白K促进前RC大会限制细胞周期蛋白E1的活动在G1。我们确定了一个依赖于细胞周期蛋白K的新的磷酸化位点,在细胞周期蛋白E1,破坏其与CDK 2的相互作用。重要的是,这种拮抗关系在细胞周期蛋白E1过表达的肿瘤中很大程度上重演。我们讨论了我们的研究结果的影响,根据最近的报告连接细胞周期蛋白K和CDK 12人类肿瘤发生。
The assembly of prereplicative complex (pre-RC) during G1 phase must be tightly controlled to sustain cell proliferation and maintain genomic stability. Mechanisms to prevent pre-RC formation in G2/M and S phases are well appreciated, whereas how cells ensure efficient pre-RC assembly during G1 is less clear. Here we report that cyclin K regulates pre-RC formation. We find that cyclin K expression positively correlates with cell proliferation, and knockdown of cyclin K or its cognate kinase CDK12 prevents the assembly of pre-RC in G1 phase. Mechanistically we uncover that cyclin K promotes pre-RC assembly by restricting cyclin E1 activity in G1. We identify a cyclin K-dependent, novel phosphorylation site in cyclin E1 that disrupts its interaction with CDK2. Importantly, this antagonistic relationship is largely recapitulated in cyclin E1-overexpressing tumors. We discuss the implications of our findings in light of recent reports linking cyclin K and CDK12 to human tumorigenesis.
3'RNA聚合酶II CTD上Ser2的前MRNA的末端形成和在人类细胞中相互耦合。
DOI: 10.1101/gad.231274.113
发表时间: 2014-02-15
影响因子: 10.5
作者:
Davidson L;Muniz L;West S
通讯作者: West S
DOI: 10.1038/onc.2010.125
发表时间: 2010-06-24
期刊: Oncogene
影响因子: 8
作者:
Kunnev D;Rusiniak ME;Kudla A;Freeland A;Cady GK;Pruitt SC
通讯作者: Pruitt SC
DOI: 10.1021/cr400105n
发表时间: 2013-11-13
期刊: CHEMICAL REVIEWS
影响因子: 62.1
作者:
Guo, Jiannan;Price, David H.
通讯作者: Price, David H.
DOI: 10.1002/hep.20969
发表时间: 2006-02-01
期刊: HEPATOLOGY
影响因子: 13.5
作者:
Fausto, N;Campbell, JS;Riehle, KJ
通讯作者: Riehle, KJ
DOI: 10.1038/sj.emboj.7600314
发表时间: 2004-08-04
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
Ballabeni, A;Melixetian, M;Helin, K
通讯作者: Helin, K