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Targeted chromosome elimination from ES-somatic hybrid cells

Abstract

To engineer a stem cell genome, we developed a technology for targeted elimination of chromosomes from mouse embryonic stem (ES)–somatic hybrid cells. Here we demonstrate the use of a universal chromosome elimination cassette (CEC) for elimination of a single embryonic stem cell (ESC)-derived chromosome 11 or 12, and also both copies of chromosome 6, which harbor pluripotency-associated genes including Nanog. We attribute hybrid-cell pluripotency to the expression of Nanog from the reprogrammed somatic-cell nuclei.

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Figure 1: ESCs carrying the CEC and cell fusion with somatic cells.
Figure 2: Chromosome painting of metaphase nuclei after elimination of chromosome 11 or 12.
Figure 3: Targeted elimination of a pair of ESC-derived chromosome 6s in a hybrid cell nucleus.

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Acknowledgements

We thank M. Evans for providing the HM1 ESC line, T. Shiroishi for providing the JF1 mice, L. Lefebvre for the pROSA26-pA and pROSA26-5′, A. McLaren and J. Ainscough for critical reading of the manuscript, and Y. Kurose for technical assistance.

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Correspondence to Takashi Tada.

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The authors declare no competing financial interests.

Supplementary information

Supplementary Fig. 1

Chromosome elimination from CEC11 and CEC12 hybrid cells.

Supplementary Fig. 2

Karyotype of post-Cre CEC11 and CEC12 hybrid cells.

Supplementary Fig. 3

Targeted elimination of ESC-derived chromosome 6s.

Supplementary Fig. 4

Pluripotency of post-Cre CEC6tg/tg hybrid cells.

Supplementary Table 1

Chromosome elimination frequency.

Supplementary Methods

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Matsumura, H., Tada, M., Otsuji, T. et al. Targeted chromosome elimination from ES-somatic hybrid cells. Nat Methods 4, 23–25 (2007). https://doi.org/10.1038/nmeth973

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