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Increasing gene editing efficiency for CRISPR-Cas9 by small RNAs in pluripotent stem cells.
CRISPR J. 4, 491-501 (2021)
Gene manipulations of human induced pluripotent stem cells (iPSCs) by CRISPR-Cas9 genome engineering are widely used for disease modeling and regenerative medicine applications. There are two competing pathways, non-homologous end joining (NHEJ) and homology directed repair (HDR) that correct the double-strand break generated by CRISPR-Cas9. Here, we improved gene editing efficiency of gene knock-in (KI) in iPSCs with minimum components by manipulating the Cas9 expression vector. Either we inserted short hairpin RNA expression cassettes to downregulate DNAPK and XRCC4, two main players of the NHEJ pathway, or we increased cell survival by inserting an anti-apoptotic expression cassette of miRNA-21 into the Cas9 vector. For an easy readout, the pluripotency gene SOX2 was targeted with a T2A-tdTomato reporter construct. In vitro downregulating DNAPK and XRCC4 increased the targeting efficiency of SOX2 KI by around twofold. Furthermore, co-expression of miRNA-21 and Cas9 improved the efficiency of SOX2 KI by around threefold. Altogether, our strategies provide a simple and valuable approach for efficient CRISPR-Cas9 gene editing in iPSCs.
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Anmerkungen
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Dna-pk; Genome; Repair; Identification; Inhibitor; Sox2
Sprache
englisch
Veröffentlichungsjahr
2021
HGF-Berichtsjahr
2021
ISSN (print) / ISBN
2573-1599
e-ISSN
2573-1602
Zeitschrift
The CRISPR Journal
Quellenangaben
Band: 4,
Heft: 4,
Seiten: 491-501
Verlag
Mary Ann Liebert
Verlagsort
140 Huguenot Street, 3rd Fl, New Rochelle, Ny 10801 Usa
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30201 - Metabolic Health
90000 - German Center for Diabetes Research
90000 - German Center for Diabetes Research
Forschungsfeld(er)
Helmholtz Diabetes Center
PSP-Element(e)
G-502300-001
G-501900-231
G-501900-231
Förderungen
Deutsches Zentrum fur Diabetesforschung (DZD)
Helmholtz-Gemeinschaft (Helmholtz Portfolio Theme Metabolic Dysfunction and Common Disease)
Helmholtz-Gemeinschaft (Helmholtz Portfolio Theme Metabolic Dysfunction and Common Disease)
WOS ID
WOS:000687302200006
Scopus ID
85113346523
PubMed ID
34406042
Erfassungsdatum
2021-09-22