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Non‐Viral Co‐Delivery of the Four Yamanaka Factors for Generation of Human Induced Pluripotent Stem Cells via Calcium Phosphate Nanocomposite Particles
Author(s) -
Cao Xia,
Deng Wenwen,
Qu Rui,
Yu Qingtong,
Li Jun,
Yang Yan,
Cao Yue,
Gao Xiangdong,
Xu Ximing,
Yu Jiangnan
Publication year - 2013
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201203646
Subject(s) - induced pluripotent stem cell , sox2 , reprogramming , homeobox protein nanog , klf4 , lin28 , regenerative medicine , germ layer , microbiology and biotechnology , viral vector , materials science , stem cell , calcium , mesenchymal stem cell , biology , cell , embryonic stem cell , biochemistry , recombinant dna , gene , metallurgy
Generating of induced pluripotent stem cells (iPSCs) can be achieved by ectopic expression of defined transcription factor sets. However, most instances of iPSC induction have been achieved using viral vectors, which carry the risk of unpredictable genetic dysfunction. Here, for the first time, a non‐viral vector based on calcium phosphate nanoparticles for the generation of virus‐free iPSCs from human umbilical cord mesenchymal stem cells (HUMSCs) via co‐delivery of the four plasmids (Oct4, Sox2, Klf4, and c‐Myc) is reported. As a result, a total of 98 colonies from 200 000 cells have been obtained, with a reprogramming efficiency of 0.049%. The iPSCs shows positive expression of pluripotency markers, including OCT4, SSEA‐3, SSEA‐4, NANOG, and TRA‐1‐81. Moreover, the iPSCs are able to differentiate into all three germ layers in vitro. Subcutaneous injection of the iPSCs into immunocompromised mice results in the formation of teratomas containing a variety of tissues from all three germ layers. These findings indicate that co‐delivery of the four Yamanaka factors via plasmid‐encapsulated calcium phosphate nanoparticles can provide a simple, safe, and efficient method for the generation of virus‐free iPSCs, which is crucial for their future clinical applications in the field of regenerative medicine.