Abstract
Epigenetic reprogramming of nuclei from differentiated to pluripotent state can be induced by three experimental approaches: nuclear transfer, cell fusion, and transduction of transcription factors. In cell fusion between embryonic stem and somatic cells, stem cell-derived trans-acting factors function to confer pluripotency on somatic cell nuclei by overwriting the epigenotype of the undifferentiated state. Intensive analyses using inter-subspecific hybrid cells revealed that de-condensation of nuclear chromatin is a key initial step for acquiring a fully reprogrammed nuclear status. The formation of de-condensed chromatin is a common molecular event seen in cell fusion-mediated reprogramming and the generation of induced pluripotent stem cells via the transduction of transcription factors. Thus, cell fusion is a powerful tool for providing information on the molecular mechanisms of nuclear reprogramming.
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Acknowledgment
Mr. K. Hirano is a research fellow of the Japanese Society for the Promotion of Science.
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Hirano, K., Tada, T. (2011). Cell Fusion-Mediated Nuclear Reprogramming of Somatic Cells. In: Ainscough, J., Yamanaka, S., Tada, T. (eds) Nuclear Reprogramming and Stem Cells. Stem Cell Biology and Regenerative Medicine. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-61779-225-0_6
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DOI: https://doi.org/10.1007/978-1-61779-225-0_6
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