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In vitro reprogramming of fibroblasts into a pluripotent ES-cell-like state

Author

Listed:
  • Marius Wernig

    (Whitehead Institute for Biomedical Research and,)

  • Alexander Meissner

    (Whitehead Institute for Biomedical Research and,)

  • Ruth Foreman

    (Whitehead Institute for Biomedical Research and,
    Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA)

  • Tobias Brambrink

    (Whitehead Institute for Biomedical Research and,)

  • Manching Ku

    (Molecular Pathology Unit and Center for Cancer Research, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA)

  • Konrad Hochedlinger

    (Whitehead Institute for Biomedical Research and,
    Present address: Center for Regenerative Medicine and Cancer Center, Massachusetts General Hospital, Harvard Medical School and Harvard Stem Cell Institute, Boston, Massachusetts 02414, USA.)

  • Bradley E. Bernstein

    (Molecular Pathology Unit and Center for Cancer Research, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
    Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA
    Harvard Medical School, Boston, Massachusetts 02115, USA)

  • Rudolf Jaenisch

    (Whitehead Institute for Biomedical Research and,
    Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA)

Abstract

Nuclear transplantation can reprogramme a somatic genome back into an embryonic epigenetic state, and the reprogrammed nucleus can create a cloned animal or produce pluripotent embryonic stem cells. One potential use of the nuclear cloning approach is the derivation of ‘customized’ embryonic stem (ES) cells for patient-specific cell treatment, but technical and ethical considerations impede the therapeutic application of this technology. Reprogramming of fibroblasts to a pluripotent state can be induced in vitro through ectopic expression of the four transcription factors Oct4 (also called Oct3/4 or Pou5f1), Sox2, c-Myc and Klf4. Here we show that DNA methylation, gene expression and chromatin state of such induced reprogrammed stem cells are similar to those of ES cells. Notably, the cells—derived from mouse fibroblasts—can form viable chimaeras, can contribute to the germ line and can generate live late-term embryos when injected into tetraploid blastocysts. Our results show that the biological potency and epigenetic state of in-vitro-reprogrammed induced pluripotent stem cells are indistinguishable from those of ES cells.

Suggested Citation

  • Marius Wernig & Alexander Meissner & Ruth Foreman & Tobias Brambrink & Manching Ku & Konrad Hochedlinger & Bradley E. Bernstein & Rudolf Jaenisch, 2007. "In vitro reprogramming of fibroblasts into a pluripotent ES-cell-like state," Nature, Nature, vol. 448(7151), pages 318-324, July.
    • Handle: RePEc:nat:nature:v:448:y:2007:i:7151:d:10.1038_nature05944
    DOI: 10.1038/nature05944
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