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Using Sniper-Cas9 to Minimize Off-target Effects of CRISPR-Cas9 Without the Loss of On-target Activity Via Directed Evolution
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Minimizing off-Target Mutagenesis Risks Caused by Programmable Nucleases.

Kentaro Ishida1, Peter Gee2, Akitsu Hotta3,4

  • 1Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan. kentaro.ishida@cira.kyoto-u.ac.jp.

International Journal of Molecular Sciences
|October 27, 2015
PubMed
Summary
This summary is machine-generated.

Programmable nucleases like CRISPR-Cas9 offer therapeutic potential but risk off-target mutations. Careful design and genomic testing are crucial to ensure safety and efficacy in gene editing applications.

Keywords:
CRISPR Cas9genome editingmutagenesisoff-target effect

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Area of Science:

  • Molecular Biology
  • Gene Editing Technologies
  • Genomic Medicine

Background:

  • Programmable nucleases, including zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and CRISPR-Cas9, show promise for treating genetic diseases and preventing infections.
  • Imperfections in DNA recognition by these nucleases can lead to off-target mutations, potentially causing adverse effects like cellular toxicity and tumorigenesis.

Purpose of the Study:

  • To review nuclease design platforms and engineering strategies for minimizing off-target activity.
  • To discuss methods for evaluating both on-target and off-target cleavage, particularly for CRISPR-Cas9 systems.

Main Methods:

  • Overview of existing nuclease design platforms.
  • Analysis of nuclease engineering approaches to reduce off-target effects.
  • Examination of techniques for assessing on- and off-target cleavage activities.

Main Results:

  • Identified various platforms for designing programmable nucleases.
  • Highlighted engineering strategies aimed at enhancing nuclease specificity.
  • Described methods for comprehensive evaluation of nuclease activity and potential off-target effects.

Conclusions:

  • Minimizing off-target mutagenesis is essential for the safe clinical application of gene editing nucleases.
  • Rigorous genomic testing is necessary to validate the integrity of nuclease-modified cells.
  • Further development in nuclease design and evaluation is critical for advancing gene-based therapies.