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Related Concept Videos

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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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Chromosome engineering in zygotes with CRISPR/Cas9.

Katharina Boroviak1, Brendan Doe1, Ruby Banerjee1

  • 1Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, CB10 1SA, Cambridge, United Kingdom.

Genesis (New York, N.Y. : 2000)
|January 9, 2016
PubMed
Summary

Researchers can now directly generate large genomic structural variants in mouse zygotes using CRISPR/Cas9. This breakthrough simplifies the creation of disease models, accelerating research into genetic disorders caused by these complex mutations.

Keywords:
CRISPR/Cas9large structural variantszygote injection

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Area of Science:

  • Genomics
  • Molecular Biology
  • Genetics

Background:

  • Large genomic structural variants (deletions, duplications, inversions) are significant causes of human diseases.
  • Creating mouse models for these variants typically involves complex, multi-step embryonic stem cell processes, limiting their accessibility.
  • CRISPR/Cas9 enables efficient generation of small genetic mutations in mouse zygotes, but not large structural variants.

Purpose of the Study:

  • To develop a method for directly generating large genomic structural variants in mouse zygotes.
  • To overcome the limitations of current methods for creating disease models with large structural variants.

Main Methods:

  • Utilizing CRISPR/Cas9 technology for direct zygote injection in mice.
  • Targeting and inducing deletions, duplications, and inversions of large genomic regions (up to one million base pairs).

Main Results:

  • Successfully demonstrated the direct generation of large structural variants (deletions, duplications, inversions) up to one million base pairs in mouse zygotes.
  • Established a streamlined method for creating complex genetic mutations directly in zygotes, bypassing ES cell manipulation.

Conclusions:

  • Direct CRISPR/Cas9 zygote injection is a feasible and efficient method for generating large structural variants in mice.
  • This technique significantly enhances the accessibility and speed of creating sophisticated mouse models for studying human genetic diseases.