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New genome-editing platform significantly increases accuracy of CRISPR-based systems
Date:4/25/2014

ssentially doubled the length of DNA that must be recognized for cleavage by these new CRISPR RNA-guided Fokl nucleases (RFNs), significantly increasing the precision of genome editing in human cells. Importantly, Joung and his colleagues also demonstrated that these new RFNs are as effective at on-target modification as existing Cas9 nucleases that target a shorter DNA sequence.

"By doubling the length of the recognized DNA sequence, we have developed a new class of genome -editing tools with substantially improved fidelity compared with existing wild-type Cas9 nucleases and nickases (enzymes that cleave a single DNA strand)," says Joung, an associate professor of Pathology at Harvard Medical School. The research team also has developed software enabling users to identify potential target sites for these RFNs and incorporated that capability into ZiFiT Targeter, a software package freely available at http://zifit.partners.org.


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Contact: Sue McGreevey
smcgreevey@partners.org
617-724-2764
Massachusetts General Hospital
Source:Eurekalert

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