Cited by 115Pluripotent Stem Cells ResearchCRISPR and Genetic EngineeringVirus-based gene therapy research

Fail-Safe System against Potential Tumorigenicity after Transplantation of iPSC Derivatives

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Itakura, Go, Kawabata, Soya, Ando, Miki, Nishiyama, Yuichiro, Sugai, Keiko, Ozaki, Masahiro, Iida, Tsuyoshi, Ookubo, Toshiki +11 more·2017·Stem Cell Reports

Abstract

Human induced pluripotent stem cells (iPSCs) are promising in regenerative medicine. However, the risks of teratoma formation and the overgrowth of the transplanted cells continue to be major hurdles that must be overcome. Here, we examined the efficacy of the inducible caspase-9 (iCaspase9) gene as a fail-safe against undesired tumorigenic transformation of iPSC-derived somatic cells. We used a lentiviral vector to transduce iCaspase9 into two iPSC lines and assessed its efficacy in vitro and in vivo. In vitro, the iCaspase9 system induced apoptosis in approximately 95% of both iPSCs and iPSC-derived neural stem/progenitor cells (iPSC-NS/PCs). To determine in vivo function, we transplanted iPSC-NS/PCs into the injured spinal cord of NOD/SCID mice. All transplanted cells whose mass effect was hindering motor function recovery were ablated upon transduction of iCaspase9. Our results suggest that the iCaspase9 system may serve as an important countermeasure against post-transplantation adverse events in stem cell transplant therapies.

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Crossref · 10.1016/j.stemcr.2017.02.003

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  • Safety switches often take the form of an inducible gene encoding a protein that kills the cell, such as inducible Caspase9 or proliferation-induced constructs.

    “These often take the form of an inducible gene to encoded for a protein that kills the cell, such as inducible Caspase9172 or proliferation-induced constructs.173”

    From Developments in stem cell-derived islet replacement therapy for treating type 1 diabetes (2023) · cites this paper as [172]

    The Introduction (page unavailable) describes HSV-TK as a suicide-gene system whose ablation is limited to cells with high proliferative potential, supporting the existence of proliferation-dependent safety switches. But this paper tests inducible caspase-9, not a proliferation-induced construct, so it does not support presenting its own system as the latter example. (LLM, conf=0.79)

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Authors
Itakura, G., Kawabata, S., Ando, M., Nishiyama, Y., Sugai, K., Ozaki, M., Iida, T., Ookubo, T., Kojima, K., Kashiwagi, R., Yasutake, K., Nakauchi, H., Miyoshi, H., Nagoshi, N., Kohyama, J., Iwanami, A., Matsumoto, M., Nakamura, M., & Okano, H.
Affiliations
  • Keio University (JP)
  • Institute of Medical Science, The University of Tokyo (JP)
Corresponding author
  • Nakamura, Masaya
  • Okano, Hideyuki
Venue
Stem Cell Reports
Publisher
Elsevier BV
Published
2017-03
Volume
8
Issue
3
Pages
673-684
ISSN
2213-6711 (ISSN-L)
OpenAlex
W2592109836
Cited by
115
References
54
Citations by year
2026: 1 · 2025: 10 · 2024: 9 · 2023: 12 · 2022: 12 · 2021: 19 · 2020: 19 · 2019: 18 · 2018: 10 · 2017: 5
FWCI
5.81
Type
journal article
Language
en
Open access
Locations
  • Stem Cell Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • General Insurance Association of Japan (15-2B-13)
  • Japan Agency for Medical Research and Development (16bm0204001h0004)
  • Research Center Network for Realization of Regenerative Medicine
  • Japan Society for the Promotion of Science (15K10422)
  • Keio University (253G1, TKDA3-4)
  • Japan Science and Technology Agency
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pluripotent Stem Cells Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
Keywords
induced pluripotent stem cells, fail-safe systems, inducible caspase-9, tumorigenicity, teratoma, apoptosis, lentiviral gene delivery, spinal cord injury, cell transplantation, motor recovery, NOD/SCID mice
MeSH terms
Animals, Cell Differentiation, Cell Line, Cell Transformation, Neoplastic, Female, Humans, Spinal Cord Injuries, Teratoma, Gene Expression, Apoptosis, Genes, Reporter, Stem Cell Transplantation, Mice, Induced Pluripotent Stem Cells, Clustered Regularly Interspaced Short Palindromic Repeats

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