An improved zinc-finger nuclease architecture for highly specific genome editing
Journal Title: | Nature biotechnology 2007-07, Vol.25 (7), p.778-785 |
Main Author: | Wang, Jianbin |
Other Authors: | Rebar, Edward J , Guschin, Dmitry Y , Lee, Ya-Li , Holmes, Michael C , Miller, Jeffrey C , Gregory, Philip D , Kim, Kenneth A , Waite, Adam J , Beausejour, Christian M , Wang, Nathaniel S , Pabo, Carl O , Rupniewski, Igor |
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Publisher: | New York, NY: Nature Publishing Group |
ID: | ISSN: 1087-0156 |
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recordid: | cdi_proquest_miscellaneous_70717381 |
title: | An improved zinc-finger nuclease architecture for highly specific genome editing |
format: | Article |
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ispartof: | Nature biotechnology, 2007-07, Vol.25 (7), p.778-785 |
description: | Genome editing driven by zinc-finger nucleases (ZFNs) yields high gene-modification efficiencies (>10%) by introducing a recombinogenic double-strand break into the targeted gene. The cleavage event is induced using two custom-designed ZFNs that heterodimerize upon binding DNA to form a catalytically active nuclease complex. Using the current ZFN architecture, however, cleavage-competent homodimers may also form that can limit safety or efficacy via off-target cleavage. Here we develop an improved ZFN architecture that eliminates this problem. Using structure-based design, we engineer two variant ZFNs that efficiently cleave DNA only when paired as a heterodimer. These ZFNs modify a native endogenous locus as efficiently as the parental architecture, but with a >40-fold reduction in homodimer function and much lower levels of genome-wide cleavage. This architecture provides a general means for improving the specificity of ZFNs as gene modification reagents. |
language: | eng |
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identifier: | ISSN: 1087-0156 |
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