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Expanding the genetic editing tool kit: ZFNs, TALENs, and CRISPR-Cas9
Rajat M. Gupta, Kiran Musunuru
Rajat M. Gupta, Kiran Musunuru
Published October 1, 2014
Citation Information: J Clin Invest. 2014;124(10):4154-4161. https://doi.org/10.1172/JCI72992.
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Review

Expanding the genetic editing tool kit: ZFNs, TALENs, and CRISPR-Cas9

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Abstract

The past decade has been one of rapid innovation in genome-editing technology. The opportunity now exists for investigators to manipulate virtually any gene in a diverse range of cell types and organisms with targeted nucleases designed with sequence-specific DNA-binding domains. The rapid development of the field has allowed for highly efficient, precise, and now cost-effective means by which to generate human and animal models of disease using these technologies. This review will outline the recent development of genome-editing technology, culminating with the use of CRISPR-Cas9 to generate novel mammalian models of disease. While the road to using this same technology for treatment of human disease is long, the pace of innovation over the past five years and early successes in model systems build anticipation for this prospect.

Authors

Rajat M. Gupta, Kiran Musunuru

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Figure 1

Repair of DSBs.

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Repair of DSBs.
With the creation of each DSB, two DNA repair processes ...
With the creation of each DSB, two DNA repair processes proceed in concert. HDR results in high-fidelity repair using a template strand. If desired, an exogenous oligonucleotide sequence can be introduced to achieve site-specific mutagenesis. NHEJ yields WT clones as well as clones with frameshift/indel mutations through its inherently more error-prone mechanism of repair.

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ISSN: 0021-9738 (print), 1558-8238 (online)

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