SENP1 Is a Crucial Regulator for Cell Senescence through DeSUMOylation of Bmi1.
SENP1 Is a Crucial Regulator for Cell Senescence through DeSUMOylation of Bmi1.
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SENP1 是通过 Bmi1 去SUMOylation 调节细胞衰老的重要调节因子
DOI:
10.1038/srep34099
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发表时间:
2016-09-23
影响因子:
4.6
通讯作者:
Zuo Y
中科院分区:
文献类型:
--
作者:
Xia N;Cai J;Wang F;Dong B;Liu S;Chen F;Cheng J;Zuo Y
Cell senescence can limit proliferative potential and prevent tumorigenesis. Bmi1 is a key regulator in cell senescence by suppressing the Ink4a/Arf locus. However, how to regulate Bmi1 activity in cell senescence is largely unknown. Here, we show that SENP1 plays an important role in cell senescence by regulating Bmi1 SUMOylation.Senp1−/−primary MEF cells show resistance to cell senescence induced by passaging or other senescence inducing signals. SENP1 deficiency also reduces oncogene H-RasV12-induced senescence, and enhances H-RasV12-induced cell transformation. We further show that inSenp1−/−MEFs the expression of p19Arf, an important regulator in p53/p21-mediated cell senescence, is markedly reduced. Meanwhile, we demonstrate that SENP1 can specifically de-SUMOylate Bmi1 and thereby decreases the occupancy of Bmi1 on p19Arfpromoter leading to decrease of H2AK119 mono-ubiquitination and up-expression of p19Arf. These data reveal a crucial role of SENP1 in regulation of cell senescence as well as cell transformation.
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影响因子:
64.8
作者:
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通讯作者:
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影响因子:
14.9
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影响因子:
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作者:
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通讯作者:
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