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Highly efficient transient gene expression and gene targeting in primate embryonic stem cells with helper-dependent adenoviral vectors

2008; National Academy of Sciences; Volume: 105; Issue: 37 Linguagem: Inglês

10.1073/pnas.0806976105

1091-6490

Keiichiro Suzuki, Kaoru Mitsui, Emi Aizawa, Kouichi Hasegawa, Eihachiro Kawase, Toshiyuki Yamagishi, Yoshihiko Shimizu, Hirofumi Suemori, Norio Nakatsuji, Kohnosuke Mitani,

Pluripotent Stem Cells Research

Human embryonic stem (hES) cells are regarded as a potentially unlimited source of cellular materials for regenerative medicine. For biological studies and clinical applications using primate ES cells, the development of a general strategy to obtain efficient gene delivery and genetic manipulation, especially gene targeting via homologous recombination (HR), would be of paramount importance. However, unlike mouse ES (mES) cells, efficient strategies for transient gene delivery and HR in hES cells have not been established. Here, we report that helper-dependent adenoviral vectors (HDAdVs) were able to transfer genes in hES and cynomolgus monkey ( Macaca fasicularis ) ES (cES) cells efficiently. Without losing the undifferentiated state of the ES cells, transient gene transfer efficiency was ≈100%. Using HDAdVs with homology arms, approximately one out of 10 chromosomal integrations of the vector was via HR, whereas the rate was only ≈1% with other gene delivery methods. Furthermore, in combination with negative selection, ≈45% of chromosomal integrations of the vector were targeted integrations, indicating that HDAdVs would be a powerful tool for genetic manipulation in hES cells and potentially in other types of human stem cells, such as induced pluripotent stem (iPS) cells.