Mitochondrial E3 ligase March5 maintains stemness of mouse ES cells via suppression of ERK signalling.
Mitochondrial E3 ligase March5 maintains stemness of mouse ES cells via suppression of ERK signalling.
复制标题
线粒体 E3 连接酶 March5 通过抑制 ERK 信号传导维持小鼠 ES 细胞的干性
DOI:
10.1038/ncomms8112
复制
发表时间:
2015-06-02
影响因子:
16.6
通讯作者:
Wu, Mian
中科院分区:
文献类型:
--
作者:
Gu, Hao;Li, Qidong;Huang, Shan;Lu, Weiguang;Cheng, Fangyuan;Gao, Ping;Wang, Chen;Miao, Lin;Mei, Yide;Wu, Mian
Embryonic stem cells (ESCs) possess pluripotency, which is the capacity of cells to differentiate into all lineages of the mature organism. Increasing evidence suggests that the pluripotent state of ESCs is regulated by a combination of extrinsic and intrinsic factors. The underlying mechanisms, however, are not completely understood. Here, we show that March5, an E3 ubiquitin ligase, is involved in maintaining mouse-ESC (mESC) pluripotency. Knockdown of March5 in mESCs led to differentiation from naive pluripotency. Mechanistically, as a transcriptional target of Klf4, March5 catalyses K63-linked polyubiquitination of Prkar1a, a negative regulatory subunit of PKA, to activate PKA, thereby inhibiting the Raf/MEK/ERK pathway. Moreover, March5 is able to replace a MEK/ERK inhibitor to maintain mESC pluripotency under serum-free culture conditions. In addition, March5 can partially replace the use of Klf4 for somatic cell reprogramming. Collectively, our study uncovers a role for the Klf4–March5–PKA–ERK pathway in maintaining the stemness properties of mESCs.
登录
查看更多内容
影响因子:
64.5
作者:
Mitsui, K;Tokuzawa, Y;Yamanaka, S
通讯作者:
Yamanaka, S
影响因子:
20.3
作者:
Li, Y;McClintick, J;Chan, RJ
通讯作者:
Chan, RJ
影响因子:
21.3
作者:
Jiang, Jianming;Chan, Yun-Shen;Ng, Huck-Hui
通讯作者:
Ng, Huck-Hui
影响因子:
11.4
作者:
Matsuda, T;Nakamura, T;Yokota, T
通讯作者:
Yokota, T
影响因子:
11.4
作者:
Nathan, James A.;Kim, Hyoung Tae;Ting, Lily;Gygi, Steven P.;Goldberg, Alfred L.
通讯作者:
Goldberg, Alfred L.