Easy quantitative assessment of genome editing by sequence trace decomposition

Area of Science:

• Molecular Biology
• Genetics
• Bioinformatics

Background:

• Genome editing efficacy and mutation profiles vary based on the DNA sequence targeted.
• Accurate characterization of induced mutations is crucial for effective genome editing.
• Existing methods for mutation analysis are often time-consuming or lack detail.

Purpose of the Study:

• To present TIDE (Tracking of Indels by Decomposition), a novel assay for characterizing and quantifying genome editing-induced mutations.
• To provide a cost-effective and rapid method for assessing genome editing efficiency.
• To facilitate the rational design and optimization of genome editing strategies.

Main Methods:

• TIDE utilizes two Polymerase Chain Reaction (PCR) reactions and standard capillary sequencing.
• Sequence traces are analyzed using a specialized decomposition algorithm.
• The algorithm identifies and quantifies major induced mutations at the target site.

Main Results:

• TIDE accurately determines the frequency of induced mutations in a cell population.
• The method provides more detailed information compared to current enzyme-based assays.
• An interactive web tool is available for automated analysis of sequence traces.

Conclusions:

• TIDE is a simple, quick, and cost-effective method for analyzing genome editing outcomes.
• This assay significantly aids in evaluating and designing genome editing experiments.
• The detailed mutation spectrum analysis supports the optimization of gene editing technologies.