Variation in the safety of induced pluripotent stem cell lines

Kyoko Miura, Yohei Okada, Takashi Aoi, Aki Okada, Kazutoshi Takahashi, Keisuke Okita, Masato Nakagawa, Michiyo Koyanagi, Koji Tanabe, Mari Ohnuki, Daisuke Ogawa, Eiji Ikeda, Hideyuki Okano, Shinya Yamanaka

Research output: Contribution to journalArticlepeer-review

729 Citations (Scopus)


We evaluated the teratoma-forming propensity of secondary neurospheres (SNS) generated from 36 mouse induced pluripotent stem (iPS) cell lines derived in 11 different ways. Teratoma-formation of SNS from embryonic fibroblast-derived iPS cells was similar to that of SNS from embryonic stem (ES) cells. In contrast, SNS from iPS cells derived from different adult tissues varied substantially in their teratoma-forming propensity, which correlated with the persistence of undifferentiated cells.

Original languageEnglish
Pages (from-to)743-745
Number of pages3
JournalNature Biotechnology
Issue number8
Publication statusPublished - 2009 Aug

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology
  • Molecular Medicine
  • Biomedical Engineering


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