西亚试剂：Reprogramming of Trophoblast Stem Cells into Pluripotent St
发布时间：2025-08-09
Reprogramming of Trophoblast Stem Cells into Pluripotent Stem Cells by Oct4
Tong Wu1,2, Haitao Wang2, Jing He2, Lan Kang2, Yonghua Jiang2, Jinchao Liu2, Yu Zhang2, Zhaohui Kou2, Lijun Liu3, Xuehong Zhang3, Shaorong Gao2
Keywords:Trophoblast stem cells;Pluripotent stem cells;Reprogramming;Cell fate conversion
Abstract
Embryonic stem (ES) cells and trophoblast stem (TS) cells are both derived from early embryos, yet these cells have distinct differentiation properties. ES cells can differentiate into all three germ layer cell types, whereas TS cells can only differentiate into placental cells. It has not been determined whether TS cells can be converted into ES-like pluripotent stem (PS) cells. Here we report that overexpression of a single transcription factor, Oct4, in TS cells is sufficient to reprogram TS cells into a pluripotent state. These Oct4 induced pluripotent stem (OiPS) cells have the epigenetic characteristics of ES cells, including X chromosome reactivation, elevated H3K27 me3 modifications and hypomethylation of promoter regions in Oct4 and Nanog genes. Meanwhile, methylation of promoter region in the Elf5 gene occurred during reprogramming of TS cells. The gene expression profile of OiPS cells was very similar to ES cells. Moreover, OiPS cells can differentiate into the three germ layer cell types in vitro and in vivo. More importantly, chimeric mice with germline transmission could be efficiently produced from OiPS cells. Our results demonstrate that one single transcription factor, Oct4, could reprogram the non-embryonic TS cells into pluripotent stem cells.
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