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:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Hochedlinger K
Hochedlinger K
中科院分区:
其他
文献类型:
--
作者:
Stadtfeld M;Nagaya M;Utikal J;Weir G;Hochedlinger K

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通过转录因子Oct 4、Sox 2、Klf 4和c-Myc的病毒表达,已经从小鼠和人类体细胞产生了多能干细胞。这项技术的一个主要限制是使用潜在有害的基因组整合病毒。在这里,我们通过使用瞬时表达Oct 4、Sox 2、Klf 4和c-Myc的非整合腺病毒从成纤维细胞和肝细胞产生小鼠诱导多能干细胞(iPS)。这些腺病毒iPS(Adeno-iPS)细胞显示重编程细胞的DNA去甲基化特征,表达内源性多能性基因,形成畸胎瘤,并有助于嵌合小鼠中的多种组织,包括生殖系。我们的研究结果表明,插入突变是不需要在体外重编程。腺病毒重编程可以提供一种用于产生和研究患者特异性干细胞以及用于比较胚胎干(ES)细胞和iPS细胞的改进方法。
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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