Cyclin K regulates prereplicative complex assembly to promote mammalian cell proliferation.
Cyclin K regulates prereplicative complex assembly to promote mammalian cell proliferation.
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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
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发表时间:
2018-05-14
影响因子:
16.6
通讯作者:
Li Q
中科院分区:
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
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.
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影响因子:
10.5
作者:
Davidson L;Muniz L;West S
通讯作者:
West S
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
影响因子:
62.1
作者:
Guo, Jiannan;Price, David H.
通讯作者:
Price, David H.
影响因子:
13.5
作者:
Fausto, N;Campbell, JS;Riehle, KJ
通讯作者:
Riehle, KJ
影响因子:
11.4
作者:
Ballabeni, A;Melixetian, M;Helin, K
通讯作者:
Helin, K