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2015 ; 5
(7
): 1493-502
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Systematic Evaluation of Drosophila CRISPR Tools Reveals Safe and Robust
Alternatives to Autonomous Gene Drives in Basic Research
#MMPMID25999583
Port F
; Muschalik N
; Bullock SL
G3 (Bethesda)
2015[May]; 5
(7
): 1493-502
PMID25999583
show ga
The Clustered Regularly Interspaced Short Palindromic Repeat/CRISPR associated
(CRISPR/Cas) technology allows rapid, site-specific genome modification in a wide
variety of organisms . Proof-of-principle studies in Drosophila melanogaster have
used various CRISPR/Cas tools and experimental designs, leading to significant
uncertainty in the community about how to put this technology into practice.
Moreover, it is unclear what proportion of genomic target sites can be modified
with high efficiency. Here, we address these issues by systematically evaluating
available CRISPR/Cas reagents and methods in Drosophila. Our findings allow
evidence-based choices of Cas9 sources and strategies for generating knock-in
alleles. We perform gene editing at a large number of target sites using a highly
active Cas9 line and a collection of transgenic gRNA strains. The vast majority
of target sites can be mutated with remarkable efficiency using these tools. We
contrast our method to recently developed autonomous gene drive technology for
somatic and germline genome engineering and conclude that optimized CRISPR with
independent transgenes is as efficient, more versatile, and does not represent a
biosafety risk.