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Direct cell reprogramming is a stochastic process amenable to acceleration

Author(s)
Jaenisch, Rudolf; Lengner, Christopher J.; van Oudenaarden, Alexander; Van Zon, Jeroen Sebastiaan; Pando, Bernardo Fabian; Saha, Krishanu; Hanna, Jacob; Creyghton, Menno P.; ... Show more Show less
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Abstract
Direct reprogramming of somatic cells into induced pluripotent stem cells (iPSCs) can be achieved by overexpression of Oct4, Sox2, Klf4 and c-Myc transcription factors, but only a minority of donor somatic cells can be reprogrammed to pluripotency. Here we demonstrate that reprogramming is a continuous stochastic process where almost all donor cells eventually give rise to iPSCs upon continued growth and transcription factor expression. Additional inhibition the p53/p21 pathway or overexpression of Lin28 increased the cell division rate and resulted in an accelerated kinetics of iPSC formation that was directly proportional to the increase in cell proliferation. In contrast, Nanog overexpression accelerated reprogramming in a predominantly cell division rate independent manner. Quantitative analyses define distinct cell division rate dependent and independent modes for accelerating the stochastic course of reprogramming, and suggest that the number of cell divisions is a key parameter driving epigenetic reprogramming to pluripotency.
Date issued
2009-12
URI
http://hdl.handle.net/1721.1/58480
Department
Massachusetts Institute of Technology. Department of Biology; Massachusetts Institute of Technology. Department of Physics
Journal
Nature
Publisher
Nature Publishing Group
Citation
Hanna, Jacob et al. “Direct cell reprogramming is a stochastic process amenable to acceleration.” Nature 462.7273 (2009): 595-601. © 2009 Nature Publishing Group.
Version: Author's final manuscript
ISSN
1476-4687
0028-0836

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