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Testing of Cis-Regulatory Elements by Targeted Transgene Integration in Zebrafish Using PhiC31 Integrase
Yavor Hadzhiev1, Irene Miguel-Escalada1, Darius Balciunas2
1Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
Methods in Molecular Biology (Clifton, N.J.)
|July 29, 2016
Summary
We developed new methods using the PhiC31 integrase system to test cis-regulatory elements. These strategies enable precise testing of enhancer activity and functionality within bacterial artificial chromosomes (BACs).
Area of Science:
- Genetics
- Molecular Biology
Background:
- Cis-regulatory elements control gene expression but functional testing is challenging.
- Variability from random integration complicates enhancer analysis.
- Bacterial artificial chromosomes (BACs) can carry large DNA fragments for study.
Purpose of the Study:
- To present novel strategies for functional testing of cis-regulatory elements.
- To utilize the PhiC31 integrase system for precise genomic targeting.
- To enable robust analysis of enhancer activity and functionality.
Main Methods:
- Targeted integration of candidate enhancers into a single genomic locus.
- Utilizing the PhiC31 integrase system for site-specific DNA integration.
- Integrating reporter genes into bacterial artificial chromosomes (BACs) for functional assays.
Main Results:
- Targeted integration minimizes position effects and integration variability.
- The methods allow for accurate assessment of enhancer activity.
- Functional testing of cis-regulatory elements within BACs is demonstrated.
Conclusions:
- The presented strategies offer reliable methods for cis-regulatory element analysis.
- The PhiC31 integrase system facilitates precise genetic manipulation.
- These approaches enhance the study of gene regulation.
