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Open Access Transduction of Cell-Penetrating Peptides Into Induced Pluripotent Stem Cells

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Induced pluripotent stem (iPS) cells have recently been generated by Yamanaka's group, and then followed by others. iPS cells are expected to have clinical applications including an important role in regenerative medicine. This study focused on the cell-penetrating peptides (CPPs) for differentiation or functional application of iPS cells, because several transduction domains can deliver a large size-independent variety of molecules into cells. Two CPPs, Texas Red-R8 and Rhodamine-TAT, were generated as representative CPPs and these CPPs were tested to determine their ability to penetrate the membrane of iPS cells. Both CPPs were transduced in iPS cells through macropinocytosis classified in endocytosis within 2 h in a manner consistent with many other cells, and no cytotoxicity and influence on their undifferentiated state was observed. In conclusion, CPPs can be utilized for their differentiation or functional application in iPS cells.

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Keywords: Cell-penetrating peptides (CPPs); Endocytosis; Induced pluripotent stem (iPS) cells; Macropinocytosis; Protein transduction domains (PTDs)

Document Type: Research Article

Publication date: 2010-06-01

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  • Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.

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