A more efficient method to generate integration-free human iPS cells.

Okita, Keisuke; Matsumura, Yasuko; Sato, Yoshiko; Okada, Aki; Morizane, Asuka; Okamoto, Satoshi; Hong, Hyenjong; Nakagawa, Masato et al. · Nat Methods · 2011

basic_science · Level V

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Abstract

We report a simple method, using p53 suppression and nontransforming L-Myc, to generate human induced pluripotent stem cells (iPSCs) with episomal plasmid vectors. We generated human iPSCs from multiple donors, including two putative human leukocyte antigen (HLA)-homozygous donors who match ∼20% of the Japanese population at major HLA loci; most iPSCs are integrated transgene-free. This method may provide iPSCs suitable for autologous and allologous stem-cell therapy in the future.

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