TransTag enables simple and efficient transgene mapping in zebrafish via tagmentation

Area of Science:

• Developmental Biology
• Genetics
• Molecular Biology

Background:

• Zebrafish are a key model organism in developmental biology due to facile transgenesis.
• Lack of transgene insertion site mapping complicates interpretation of gene expression and allelic variation.
• Current methods for insertion site identification are complex and require bioinformatics expertise.

Purpose of the Study:

• To introduce TransTag, a simple and efficient method for identifying Tol2-based transgene insertion sites in zebrafish.
• To provide researchers with a low-cost, accessible tool for transgene mapping.
• To enhance the precision and utility of zebrafish transgenesis studies.

Main Methods:

• Utilizes Tn5 transposase-mediated tagmentation for streamlined insertion site identification.
• Does not require alignment of raw sequencing data.
• Includes a detailed protocol, data analysis guide, and a user-friendly Shiny app.

Main Results:

• TransTag enables straightforward and efficient identification of transgene insertion sites.
• The method bypasses the need for complex bioinformatics analysis.
• Provides chromosome-specific information on transgene locations.

Conclusions:

• TransTag is a valuable tool for zebrafish transgenesis research.
• Enhances precision by providing essential genetic location data.
• Lowers the barrier for researchers to map transgene insertion sites.