Abstract
Genome-editing tools are programmable artificial nucleases, mainly including zinc-finger nucleases, transcription activator-like effector nucleases and clustered regularly interspaced short palindromic repeat (CRISPR). By recognizing and cleaving specific DNA sequences, genome-editing tools make it possible to generate site-specific DNA double-strand breaks (DSBs) in the genome. DSBs will then be repaired by either error-prone nonhomologous end joining or high-fidelity homologous recombination mechanisms. Through these two different mechanisms, endogenous genes can be knocked out or precisely repaired/modified. Rapid developments in genome-editing tools, especially CRISPR, have revolutionized human disease models generation, for example, various zebrafish, mouse, rat, pig, monkey and human cell lines have been constructed. Here, we review the developmental history of CRISPR and its application in studies of human diseases. In addition, we also briefly discussed the therapeutic application of CRISPR in the near future.
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