ZFN, TALEN, and CRISPR/Cas-based methods for genome engineering.
Zinc-finger nucleases (ZFNs) and transcription activator-like effector nucleases (TALENs) comprise a powerful class of tools that are redefining the boundaries of biological research. These chimeric nucleases are composed of programmable, sequence-specific DNA-binding modules linked to a nonspecific DNA cleavage domain. ZFNs and TALENs enable a broad range of genetic modifications by inducing DNA double-strand breaks that stimulate error-prone nonhomologous end joining or homology-directed repair at specific genomic locations. Here, we review achievements made possible by site-specific nuclease technologies and discuss applications of these reagents for genetic analysis and manipulation. In addition, we highlight the therapeutic potential of ZFNs and TALENs and discuss future prospects for the field, including the emergence of clustered regulatory interspaced short palindromic repeat (CRISPR)/Cas-based RNA-guided DNA endonucleases.
PubMed ID: 23664777
PMC ID: PMC3694601
Article link: Trends Biotechnol.
Grant support: DP1 CA174426 NCI NIH HHS , DP1CA174426 NCI NIH HHS , DP2OD008586 NIH HHS , T32 GM080209 NIGMS NIH HHS , T32GM080209 NIGMS NIH HHS