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Generation of mouse-induced pluripotent stem cells by transient expression of a single nonviral polycistronic vector
Rodríguez Pizà, Ignasi; Barragan, Montserrat; González, Federico; Izpisúa Belmonte, J. C.; Batlle Morera, Laura; Vassena, Rita; Montserrat, Nuria; Tiscornia, Gustavo
Induced pluripotent stem (iPS) cells have generated keen interestdue to their potential use in regenerative medicine. They havebeen obtained from various cell types of both mice and humans byexogenous delivery of different combinations of Oct4, Sox2, Klf4,c-Myc, Nanog, and Lin28. The delivery of these transcription factorshas mostly entailed the use of integrating viral vectors (retrovirusesor lentiviruses), carrying the risk of both insertional mutagenesisand oncogenesis due to misexpression of these exogenousfactors. Therefore, obtaining iPS cells that do not carry integratedtransgene sequences is an important prerequisite for their eventualtherapeutic use. Here we report the generation of iPS cell linesfrom mouse embryonic fibroblasts with no evidence of integrationof the reprogramming vector in their genome, achieved by nucleofectionof a polycistronic construct coexpressing Oct4, Sox2, Klf4,and c-Myc
Medicina regenerativa
Cél·lules mare embrionàries
(c) National Academy of Sciences
National Academy of Sciences

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