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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Biotechnol
2015 ; 33
(5
): 538-42
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Increasing the efficiency of precise genome editing with CRISPR-Cas9 by
inhibition of nonhomologous end joining
#MMPMID25798939
Maruyama T
; Dougan SK
; Truttmann MC
; Bilate AM
; Ingram JR
; Ploegh HL
Nat Biotechnol
2015[May]; 33
(5
): 538-42
PMID25798939
show ga
Methods to introduce targeted double-strand breaks (DSBs) into DNA enable precise
genome editing by increasing the rate at which externally supplied DNA fragments
are incorporated into the genome through homologous recombination. The efficiency
of these methods is limited by nonhomologous end joining (NHEJ), an alternative
DNA repair pathway that competes with homology-directed repair (HDR). To promote
HDR at the expense of NHEJ, we targeted DNA ligase IV, a key enzyme in the NHEJ
pathway, using the inhibitor Scr7. Scr7 treatment increased the efficiency of
HDR-mediated genome editing, using Cas9 in mammalian cell lines and in mice for
all four genes examined, up to 19-fold. This approach should be applicable to
other customizable endonucleases, such as zinc finger nucleases and transcription
activator-like effector nucleases, and to nonmammalian cells with sufficiently
conserved mechanisms of NHEJ and HDR.