DEK oncoprotein participates in heterochromatin replication via SUMO-dependent nuclear bodies.
DEK oncoprotein participates in heterochromatin replication via SUMO-dependent nuclear bodies.
复制标题
DOI:
10.1242/jcs.261329
复制
发表时间:
2023-12-01
影响因子:
4
通讯作者:
中科院分区:
文献类型:
--
作者:
The correct inheritance of chromatin structure is key for maintaining genome function and cell identity and preventing cellular transformation. DEK, a conserved non-histone chromatin protein, has recognized tumor-promoting properties, its overexpression being associated with poor prognosis in various cancer types. At the cellular level, DEK displays pleiotropic functions, influencing differentiation, apoptosis and stemness, but a characteristic oncogenic mechanism has remained elusive. Here, we report the identification of DEK bodies, focal assemblies of DEK that regularly occur at specific, yet unidentified, sites of heterochromatin replication exclusively in late S-phase. In these bodies, DEK localizes in direct proximity to active replisomes in agreement with a function in the early maturation of heterochromatin. A high-throughput siRNA screen, supported by mutational and biochemical analyses, identifies SUMO as one regulator of DEK body formation, linking DEK to the complex SUMO protein network that controls chromatin states and cell fate. This work combines and refines our previous data on DEK as a factor essential for heterochromatin integrity and facilitating replication under stress, and delineates an avenue of further study for unraveling the contribution of DEK to cancer development. The human oncoprotein DEK forms nuclear bodies that are regulated by the SUMO pathway and localize to active sites of constitutive heterochromatin replication.
登录
查看更多内容
影响因子:
14.9
作者:
Bhat A;Andersen PL;Qin Z;Xiao W
通讯作者:
Xiao W
影响因子:
7.5
作者:
Dundr, Miroslav
通讯作者:
Dundr, Miroslav
影响因子:
14.9
作者:
Casas-Delucchi CS;van Bemmel JG;Haase S;Herce HD;Nowak D;Meilinger D;Stear JH;Leonhardt H;Cardoso MC
通讯作者:
Cardoso MC
影响因子:
5.6
作者:
Tsao WC;Eckert KA
通讯作者:
Eckert KA
影响因子:
56.9
作者:
Bates, Mark;Huang, Bo;Zhuang, Xiaowei
通讯作者:
Zhuang, Xiaowei