Abstract
Fluorescent reporter and epitope-tagged human pluripotent stem cells (hPSCs) greatly facilitate studies on the pluripotency and differentiation characteristics of these cells. Unfortunately traditional procedures to generate such lines are hampered by a low targeting efficiency that necessitates a lengthy process of selection followed by the removal of the selection cassette. Here we describe a procedure to generate fluorescent reporter and epitope tagged hPSCs in an efficient one-step process using the CRISPR/Cas technology. Although the method described uses our recently developed iCRISPR platform, the protocols can be adapted for general use with CRISPR/Cas or other engineered nucleases. The transfection procedures described could also be used for additional applications, such as overexpression or lineage tracing studies.
Keywords:
CRISPR/Cas; Epitope tag; Fluorescent reporter; Gene targeting; Homologous recombination; Human pluripotent stem cells (hPSCs); Knockin.
MeSH terms
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Bacterial Proteins / genetics
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Bacterial Proteins / metabolism
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CRISPR-Associated Protein 9
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CRISPR-Cas Systems*
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Clustered Regularly Interspaced Short Palindromic Repeats
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Doxycycline / pharmacology
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Endonucleases / genetics
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Endonucleases / metabolism
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Epitopes / genetics
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Epitopes / metabolism
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Gene Knock-In Techniques*
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Genes, Reporter
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Genetic Loci
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Genetic Vectors / chemistry
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Genetic Vectors / metabolism*
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Green Fluorescent Proteins / genetics
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Green Fluorescent Proteins / metabolism
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Homologous Recombination
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Humans
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Lipids / pharmacology
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Luminescent Proteins / genetics
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Luminescent Proteins / metabolism
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Pluripotent Stem Cells / cytology
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Pluripotent Stem Cells / drug effects
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Pluripotent Stem Cells / metabolism*
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RNA, Guide, CRISPR-Cas Systems / genetics
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RNA, Guide, CRISPR-Cas Systems / metabolism
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Transfection / methods*
Substances
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Bacterial Proteins
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Epitopes
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Lipids
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Lipofectamine
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Luminescent Proteins
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RNA, Guide, CRISPR-Cas Systems
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fluorescent protein 583
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Green Fluorescent Proteins
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CRISPR-Associated Protein 9
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Cas9 endonuclease Streptococcus pyogenes
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Endonucleases
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Doxycycline