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Related Concept Videos

CRISPR/Cas9 Genome Editing01:28

CRISPR/Cas9 Genome Editing

142
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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Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
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CRISPR01:59

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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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Related Experiment Video

Updated: Aug 22, 2025

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms
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Prime editing for precise and highly versatile genome manipulation.

Peter J Chen1,2,3, David R Liu4,5,6

  • 1Merkin Institute of Transformative Technologies in Healthcare, Broad Institute of Harvard and MIT, Cambridge, MA, USA.

Nature Reviews. Genetics
|November 7, 2022
PubMed
Summary
This summary is machine-generated.

Prime editing is a versatile CRISPR-Cas tool for precise DNA editing in mammalian cells. This gene-editing technology enables targeted substitutions, insertions, and deletions without double-strand DNA breaks, offering new therapeutic possibilities.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • CRISPR-Cas technologies are revolutionizing life sciences and genetic disease treatment.
  • Prime editors represent an advanced CRISPR-Cas system offering high versatility, specificity, and precision for DNA modification.
  • Unlike other gene-editing tools, prime editors avoid double-strand DNA breaks.

Purpose of the Study:

  • To review prime editing strategies for programmed genomic changes.
  • To highlight the limitations of current prime editing techniques.
  • To discuss recent developments, applications, and future directions in prime editing.

Main Methods:

  • Utilizes a programmable nickase fused to a polymerase enzyme.
  • Employs an extended guide RNA to specify target sites and template edits.
  • Focuses on DNA modifications including substitutions, small insertions, and small deletions.

Main Results:

  • Prime editors can introduce virtually any substitution, small insertion, or small deletion.
  • The technology operates within living mammalian cells with high precision.
  • Recent developments address and overcome previous limitations of prime editing.

Conclusions:

  • Prime editing offers a powerful and precise method for genome engineering.
  • The technology holds significant potential for treating genetic diseases.
  • Ongoing research continues to expand the capabilities and applications of prime editing.