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Mthfd2 Modulates Mitochondrial Function and DNA Repair to Maintain the Pluripotency of Mouse Stem Cells

The pluripotency of stem cells determines their developmental potential. While the pluripotency states of pluripotent stem cells are variable and interconvertible, the mechanisms underlying the acquisition and maintenance of pluripotency remain largely elusive. Here, we identified that methylenetetr...

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Detalles Bibliográficos
Autores principales: Yue, Liang, Pei, Yangli, Zhong, Liang, Yang, Henry, Wang, Yanliang, Zhang, Wei, Chen, Naixin, Zhu, Qianqian, Gao, Jie, Zhi, Minglei, Wen, Bingqiang, Zhang, Shaopeng, Xiang, Jinzhu, Wei, Qingqing, Liang, Hui, Cao, Suying, Lou, Huiqiang, Chen, Zhongzhou, Han, Jianyong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7419720/
https://www.ncbi.nlm.nih.gov/pubmed/32679066
http://dx.doi.org/10.1016/j.stemcr.2020.06.018
Descripción
Sumario:The pluripotency of stem cells determines their developmental potential. While the pluripotency states of pluripotent stem cells are variable and interconvertible, the mechanisms underlying the acquisition and maintenance of pluripotency remain largely elusive. Here, we identified that methylenetetrahydrofolate dehydrogenase (NAD(+)-dependent), methenyltetrahydrofolate cyclohydrolase (Mthfd2) plays an essential role in maintaining embryonic stem cell pluripotency and promoting complete reprogramming of induced pluripotent stem cells. Mechanistically, in mitochondria, Mthfd2 maintains the integrity of the mitochondrial respiratory chain and prevents mitochondrial dysfunction. In the nucleus, Mthfd2 stabilizes the phosphorylation of EXO1 to support DNA end resection and promote homologous recombination repair. Our results revealed that Mthfd2 is a dual-function factor in determining the pluripotency of pluripotent stem cells through both mitochondrial and nuclear pathways, ultimately ensuring safe application of pluripotent stem cells.