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Purification of BAC DNA for high-efficiency transgenesis
Rajendra K Gangalum1, Zhe Jing, Yoshiko Nagaoka
1Jules Stein Eye Institute, UCLA, University of California, Los Angeles, CA 90095-700019, USA. rkganga@jsei.ucla.edu
Biotechniques
|November 8, 2011
Summary
Efficiently generating founder mice for bacterial artificial chromosome (BAC) transgenesis is challenging due to poor DNA quality. A novel purification method using RECOCHIP significantly improves BAC DNA quality, boosting transgenic founder efficiency up to 80%.
Area of Science:
- Molecular Biology
- Genetics
- Animal Models
Background:
- Bacterial artificial chromosome (BAC) transgenesis is crucial for creating genetically modified organisms.
- Low efficiency in generating founder mice is a significant bottleneck, often caused by suboptimal BAC DNA quality.
Purpose of the Study:
- To address the challenge of low efficiency in BAC transgenesis.
- To develop an improved method for purifying BAC DNA to enhance founder mouse generation.
Main Methods:
- Utilized mini-gel electrophoresis and electro-elution techniques.
- Employed RECOCHIP, a commercially available dialysis cassette, for BAC DNA purification.
- Avoided traditional methods like CsCl(2) centrifugation, column chromatography, and resin purifications.
Main Results:
- Achieved high-quality BAC DNA purification.
- Successfully generated transgenic founder mice with up to 80% efficiency.
- Demonstrated a significant improvement over existing methods.
Conclusions:
- The RECOCHIP purification method offers a highly efficient solution for BAC DNA manipulation.
- This technique overcomes previous limitations, enabling more effective generation of transgenic founder mice.
