Cyclin C is a haploinsufficient tumour suppressor.
Cyclin C is a haploinsufficient tumour suppressor.
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DOI:
10.1038/ncb3046
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发表时间:
2014-11
影响因子:
21.3
通讯作者:
中科院分区:
文献类型:
--
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Cyclin C was cloned as a growth-promoting G1 cyclin, and was also shown to regulate gene transcription. Here we report that in vivo cyclin C acts as a haploinsufficient tumor suppressor, by controlling Notch1 oncogene levels. Cyclin C activates an “orphan” CDK19 kinase, as well as CDK8 and CDK3. These cyclin C-CDK complexes phosphorylate Notch1 intracellular domain (ICN1) and promote ICN1 degradation. Genetic ablation of cyclin C blocks ICN1 phosphorylation in vivo, thereby elevating ICN1 levels in cyclin C-knockout mice. Cyclin C ablation or heterozygosity collaborate with other oncogenic lesions and accelerate development of T-cell-acute lymphoblastic leukemia (T-ALL). Furthermore, the cyclin C gene is heterozygously deleted in a significant fraction of human T-ALL, and these tumors express reduced cyclin C levels. We also describe point mutations in human T-ALL that render cyclin C-CDK unable to phosphorylate ICN1. Hence, tumor cells may develop different strategies to evade cyclin C inhibitory function.
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影响因子:
16.8
作者:
通讯作者:
--
影响因子:
3.4
作者:
Bondi, J;Husdal, A;Bukholm, IRK
通讯作者:
Bukholm, IRK
DOI:
10.1073/pnas.88.10.4367
发表时间:
1991-05-01
影响因子:
11.1
作者:
BOEHM, T;FORONI, L;RABBITTS, TH
通讯作者:
RABBITTS, TH
影响因子:
3.4
作者:
Galamb, Orsolya;Sipos, Ferenc;Tulassay, Zsolt
通讯作者:
Tulassay, Zsolt
影响因子:
64.5
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Alarcón C;Zaromytidou AI;Xi Q;Gao S;Yu J;Fujisawa S;Barlas A;Miller AN;Manova-Todorova K;Macias MJ;Sapkota G;Pan D;Massagué J
通讯作者:
Massagué J