Induced pluripotent stem cells generated without viral integration.
Induced pluripotent stem cells generated without viral integration.
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DOI:
10.1126/science.1162494
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发表时间:
2008-11-07
期刊:
影响因子:
--
通讯作者:
Hochedlinger K
中科院分区:
文献类型:
--
作者:
Stadtfeld M;Nagaya M;Utikal J;Weir G;Hochedlinger K
Pluripotent stem cells have been generated from mouse and human somatic cells by viral expression of the transcription factors Oct4, Sox2, Klf4, and c-Myc. A major limitation of this technology is the use of potentially harmful genome-integrating viruses. Here, we generate mouse induced pluripotent stem cells (iPS) from fibroblasts and liver cells by using non-integrating adenoviruses transiently expressing Oct4, Sox2, Klf4, and c-Myc. These adenoviral iPS (Adeno-iPS) cells show DNA demethylation characteristic of reprogrammed cells, express endogenous pluripotency genes, form teratomas, and contribute to multiple tissues, including the germline, in chimeric mice. Our results show that insertional mutagenesis is not required for in vitro reprogramming. Adenoviral reprogramming may provide an improved method for generating and studying patient-specific stem cells and for comparing embryonic stem (ES) cells and iPS cells.
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