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Related Concept Videos

In-vitro Mutagenesis01:16

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Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
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The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...
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Related Experiment Video

Updated: Apr 30, 2026

Mouse Genome Engineering Using Designer Nucleases
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Endonucleases: new tools to edit the mouse genome.

Tobias Wijshake1, Darren J Baker2, Bart van de Sluis1

  • 1Molecular Genetics, University of Groningen, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.

Biochimica Et Biophysica Acta
|May 6, 2014
PubMed
Summary

New genome editing technologies like CRISPR/Cas offer faster and more efficient mouse gene modification for disease research compared to older methods. However, potential off-target effects require careful consideration.

Keywords:
CRISPR/CasEndonucleasesGenome editingMouseTALENZFN

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Area of Science:

  • Genetics
  • Molecular Biology
  • Genomics

Background:

  • Traditional homologous recombination for mouse gene modification is time-consuming and laborious.
  • Mouse models are crucial for understanding human disease pathophysiology.
  • Advancements in gene editing are needed to overcome limitations of existing technologies.

Approach:

  • Overview of novel genome editing technologies: zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and CRISPR/Cas systems.
  • Explanation of how these systems use engineered DNA-binding proteins or RNA to guide nucleases for targeted double-strand breaks.
  • Description of gene modification mechanisms via DNA repair pathways (disruption, correction, insertion).

Key Points:

  • Nuclease-mediated genome editing significantly increases efficiency and reduces generation time for mutant mice.
  • Multiple genes can be mutagenized simultaneously, accelerating functional studies.
  • CRISPR/Cas systems, while powerful, raise concerns regarding off-target cleavage.

Conclusions:

  • Nuclease-driven genome editing provides powerful advantages over conventional gene targeting for creating mouse models.
  • Understanding the principles, benefits, and drawbacks of new genome editing strategies is essential for their effective application.
  • These technologies are transforming the study of gene function in mouse models of human disease.