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Related Concept Videos

Overview of DNA Repair02:25

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In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
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Related Experiment Video

Updated: Apr 12, 2026

A Standard Methodology to Examine On-site Mutagenicity As a Function of Point Mutation Repair Catalyzed by CRISPR/Cas9 and SsODN in Human Cells
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Collateral DNA damage produced by genome-editing drones: exception or rule?

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Summary

Researchers developed a new technique to identify off-target mutations caused by genome-editing tools and natural mutators. This method provides nucleotide-level resolution for precise analysis of DNA alterations.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Biotechnology

Background:

  • Genome-editing technologies like endonucleases offer precise DNA modification capabilities.
  • Understanding off-target mutations is crucial for the safety and efficacy of genome editing.
  • Endogenous mutators can cause unintended DNA alterations.

Purpose of the Study:

  • To develop a novel method for capturing translocation partners.
  • To enable the precise identification of off-target sites for genome-editing endonucleases.
  • To detect endogenous mutators at nucleotide resolution.

Main Methods:

  • Development of an elegant technique to capture translocation partners.
  • Application of the technique to identify off-target regions.
  • Utilizing nucleotide resolution for detailed analysis.

Main Results:

  • Successfully captured translocation partners.
  • Enabled determination of off-target regions for genome-editing endonucleases.
  • Identified endogenous mutators with nucleotide resolution.

Conclusions:

  • The developed technique is effective for identifying off-target mutations.
  • Provides a valuable tool for assessing genome-editing safety.
  • Offers a method for studying endogenous mutagens at high resolution.