A murine ESC-like state facilitates transgenesis and homologous recombination in human pluripotent stem cells.

Abstract

Murine pluripotent stem cells can exist in two functionally distinct states, LIF-dependent embryonic stem cells (ESCs) and bFGF-dependent epiblast stem cells (EpiSCs). However, human pluripotent cells so far seemed to assume only an epiblast-like state. Here we demonstrate that human iPSC reprogramming in the presence of LIF yields human stem cells that display morphological, molecular, and functional properties of murine ESCs. We termed these hLR5 iPSCs because they require the expression of five ectopic reprogramming factors, Oct4, Sox2, Klf4, cMyc, and Nanog, to maintain this more naive state. The cells are "metastable" and upon ectopic factor withdrawal they revert to standard human iPSCs. Finally, we demonstrate that the hLR5 state facilitates gene targeting, and as such provides a powerful tool for the generation of recombinant human pluripotent stem cell lines.

DOI: 10.1016/j.stem.2010.05.003

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@article{Buecker2010AME, title={A murine ESC-like state facilitates transgenesis and homologous recombination in human pluripotent stem cells.}, author={Christa Buecker and Hsu-hsin Chen and Jose M Polo and Laurence Daheron and Lei Bu and Tahsin Stefan Barakat and Patricia Okwieka and Andrew C. G. Porter and J Gribnau and Konrad Hochedlinger and Niels Geijsen}, journal={Cell stem cell}, year={2010}, volume={6 6}, pages={535-46} }