Abstract:
:Transgenesis of human pluripotent stem cells (hPSCs) can enable and empower a variety of studies in stem cell research, including lineage tracing and functional genetics studies. While in recent years much progress has been made in the development of tools for gene targeting, little attention has been given to the identification of sites in the human genome where transgenes can be inserted and reliably expressed. In order to find human genomic sites capable of supporting long-term and high-level transgene expression in hPSCs, we performed a lentiviral screen in human induced pluripotent stem cells (iPSCs). We isolated 40 iPSC clones each harboring a single vector copy and characterized the level of transgene expression afforded by each unique integration site. We selected one clone, LiPS-A3 with an integration site in chromosome 15 maintaining robust expression without silencing and demonstrate that different transgenes can be inserted therein rapidly and efficiently through recombinase-mediated cassette exchange (RMCE). The LiPS-A3 line can greatly facilitate the insertion of reporter and other genes in hPSCs. Targeting transgenes in the LiPS-A3S genomic locus can find broad applications in stem cell research and possibly cell and gene therapy.
journal_name
Mol Ther Nucleic Acidsjournal_title
Molecular therapy. Nucleic acidsauthors
Kotini AG,Sadelain M,Papapetrou EPdoi
10.1038/mtna.2016.99subject
Has Abstractpub_date
2016-11-29 00:00:00pages
e394issue
11issn
2162-2531pii
S2162-2531(17)30119-1journal_volume
5pub_type
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