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  Activation of pluripotency-associated genes in mouse embryonic fibroblasts by non-viral transfection with in vitro-derived mRNAs encoding Oct4, Sox2, Klf4 and cMyc

Tavernier, G., Wolfrum, K., Demeester, J., De Smedt, S. C., Adjaye, J., & Rejman, J. (2012). Activation of pluripotency-associated genes in mouse embryonic fibroblasts by non-viral transfection with in vitro-derived mRNAs encoding Oct4, Sox2, Klf4 and cMyc. Biomaterials, 33(2), 412-7. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/21993235 http://pdn.sciencedirect.com/science?_ob=MiamiImageURL&_cid=271870&_user=28761&_pii=S0142961211011380&_check=y&_origin=article&_zone=toolbar&_coverDate=31-Jan-2012&view=c&originContentFamily=serial&wchp=dGLzVlV-zSkWz&md5=b738f6c9a5e84de700070610e53c28aa/1-s2.0-S0142961211011380-main.pdf http://pdn.sciencedirect.com/science?_ob=MiamiImageURL&_cid=271870&_user=28761&_pii=S0142961211011380&_check=y&_origin=article&_zone=toolbar&_coverDate=31-Jan-2012&view=c&originContentFamily=serial&wchp=dGLbVlV-zSkWA&md5=b738f6c9a5e84de700070610e53c28aa/1-s2.0-S0142961211011380-main.pdf.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-775B-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-775C-A
Genre: Journal Article

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Tavernier, G.1, Author              
Wolfrum, K.2, Author              
Demeester, J., Author
De Smedt, S. C., Author
Adjaye, J.2, Author              
Rejman, J., Author
Affiliations:
1Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society, ou_1433550              
2Molecular Embryology and Aging (James Adjaye), Dept. of Vertebrate Genomics (Head: Hans Lehrach), Max Planck Institute for Molecular Genetics, Max Planck Society, ou_1479654              

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 Abstract: The first successful reprogramming of differentiated cells to a pluripotent state was done by retroviral introduction of four transcription factors (Oct4, Sox2, Klf4, cMyc) by the group of Yamanaka in 2006. Since then, scientists all over the world have attempted various methods to avoid insertional mutagenesis, a major limitation of the retrovirus-based method, however no technique was found to completely avoid DNA integration. Recently, a non-viral mRNA-based approach, inherent to avoid genomic integration, was implemented to generate stem cell-like cells, yet, seventeen daily transfections were required, inducing substantial stress on the cells. In this work, we demonstrate successful activation of pluripotency-associated genes in mouse embryonic fibroblasts by means of cationic lipid-mediated introduction of mRNAs encoding the four factors. Moreover, our transfection protocol required maximally three transfections. Up-regulation of the transfected factors as well as Nanog and SSEA-1, typical mouse pluripotency markers, was detected already after the first transfection. Nuclear localization of the introduced factors was confirmed. Positive alkaline phosphatase staining of cell clusters further confirmed the onset of the reprogramming process. In conclusion, the transfection method presented here holds great promise for safe generation of induced pluripotent stem cells of mouse origin.

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Title: Biomaterials
Source Genre: Journal
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Pages: - Volume / Issue: 33 (2) Sequence Number: - Start / End Page: 412 - 7 Identifier: ISSN: 1878-5905 (Electronic) 0142-9612 (Linking)