Cyclin F-Chk1 synthetic lethality mediated by E2F1 degradation
Cyclin F-Chk1 synthetic lethality mediated by E2F1 degradation
复制标题
E2F1 降解介导的 Cyclin F-Chk1 合成致死率
DOI:
10.1101/509810
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Burdova K
中科院分区:
文献类型:
--
作者:
Burdova K
Cyclins are central engines of cell cycle progression when partnered with Cyclin Dependent Kinases (CDKs). Among the different cyclins controlling cell cycle progression, cyclin F does not partner with a CDK, but forms an E3 ubiquitin ligase, assembling through the F-box domain, an Skp1-Cul1-F-box (SCF) module. Although multiple substrates of cyclin F have been identified the vulnerabilities of cells lacking cyclin F are not known. Thus, we assessed viability of cells lacking cyclin F upon challenging cells with more than 200 kinase inhibitors. The screen revealed a striking synthetic lethality between Chk1 inhibition and cyclin F loss. Chk1 inhibition in cells lacking cyclin F leads to DNA replication catastrophe. The DNA replication catastrophe depends on the accumulation of E2F1 in cyclin F depleted cells. We observe that SCFcyclin Fpromotes E2F1 degradation after Chk1 inhibitors in a CDK dependent manner. Thus, Cyclin F restricts E2F1 activity during cell cycle and upon checkpoint inhibition to prevent DNA replication stress. Our findings pave the way for patient selection in the clinical use of checkpoint inhibitors.
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影响因子:
10.5
作者:
Jin, JP;Shirogane, T;Harper, JW
通讯作者:
Harper, JW
影响因子:
8.8
作者:
Mavrommati I;Faedda R;Galasso G;Li J;Burdova K;Fischer R;Kessler BM;Carrero ZI;Guardavaccaro D;Pagano M;D'Angiolella V
通讯作者:
D'Angiolella V
影响因子:
5.7
作者:
通讯作者:
--
影响因子:
19
作者:
D'Angiolella V;Esencay M;Pagano M
通讯作者:
Pagano M