Cited by 563Pluripotent Stem Cells ResearchMesenchymal stem cell researchNeurogenesis and neuroplasticity mechanisms

A High-Efficiency System for the Generation and Study of Human Induced Pluripotent Stem Cells

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Maherali, Nimet, Ahfeldt, Tim, Rigamonti, Alessandra, Utikal, Jochen, Cowan, Chad, Hochedlinger, Konrad·2008·Cell Stem Cell

Abstract

Direct reprogramming of human fibroblasts to a pluripotent state has been achieved through ectopic expression of the transcription factors OCT4, SOX2, and either cMYC and KLF4 or NANOG and LIN28. Little is known, however, about the mechanisms by which reprogramming occurs, which is in part limited by the low efficiency of conversion. To this end, we sought to create a doxycycline-inducible lentiviral system to convert primary human fibroblasts and keratinocytes into human induced pluripotent stem cells (hiPSCs). hiPSCs generated with this system were molecularly and functionally similar to human embryonic stem cells (hESCs), demonstrated by gene expression profiles, DNA methylation status, and differentiation potential. While expression of the viral transgenes was required for several weeks in fibroblasts, we found that 10 days was sufficient for the reprogramming of keratinocytes. Using our inducible system, we developed a strategy to induce hiPSC formation at high frequency. Upon addition of doxycycline to hiPSC-derived differentiated cells, we obtained "secondary" hiPSCs at a frequency at least 100-fold greater than the initial conversion. The ability to reprogram cells at high efficiency provides a unique platform to dissect the underlying molecular and biochemical processes that accompany nuclear reprogramming.

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Crossref · 10.1016/j.stem.2008.08.003

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  • Several studies have suggested an unanticipated level of cellular plasticity within epidermal keratinocytes, resulting in cell-fate flexibility during wound repair.

    “Several studies have suggested an unanticipated level of cellular plasticity within epidermal keratinocytes, resulting in cell‐fate flexibility during wound repair.[ 8 , 9 , 10 , 11 , 12 ]”

    From Sweat Gland Organoids Originating from Reprogrammed Epidermal Keratinocytes Functionally Recapitulated Damaged Skin (2021) · cites this paper as [11]

    The Discussion reports that neonatal foreskin keratinocytes were experimentally reprogrammed to a pluripotent state, supporting cellular fate flexibility under induced conditions. It does not address keratinocyte fate changes during wound repair, so it cannot support that setting-specific part of the claim. Our copy provides section labels but no page numbers. (LLM, conf=0.88)

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Authors
Maherali, N., Ahfeldt, T., Rigamonti, A., Utikal, J., Cowan, C., & Hochedlinger, K.
Affiliations
Harvard University (US)
Corresponding author
  • Cowan, Chad
  • Hochedlinger, Konrad
Venue
Cell Stem Cell
Publisher
Elsevier BV
Published
2008-09
Volume
3
Issue
3
Pages
340-345
ISSN
  • 1875-9777 (ISSN-L)
  • 1934-5909
OpenAlex
W2086046223
Cited by
563
References
20
Citations by year
2026: 5 · 2025: 14 · 2024: 16 · 2023: 14 · 2022: 11 · 2021: 21 · 2020: 17 · 2019: 16 · 2018: 36 · 2017: 20 · 2016: 28 · 2015: 44 · 2014: 40 · 2013: 49 · 2012: 56
FWCI
24.16
Type
journal article
Language
en
Open access
Locations
  • Cell stem cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institutes of Health (1dp2od003266-01)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pluripotent Stem Cells Research
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
human induced pluripotent stem cells, direct reprogramming, fibroblast reprogramming, Oct4, SOX2, c-Myc, KLF4, Nanog, Lin28, reprogramming efficiency, nuclear reprogramming, DNA methylation, differentiation potential
MeSH terms
Kruppel-Like Factor 4, Cytological Techniques, Fibroblasts, Genetic Techniques, Genetic Vectors, Humans, Lentivirus, Pluripotent Stem Cells, Cell Dedifferentiation, Cellular Reprogramming

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