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A Rapid Method for Engineering Recombinant Polioviruses or Other Enteroviruses
Maël Bessaud1,2, Isabelle Pelletier1,2, Bruno Blondel1,2
1INSERM U994, Institut National de Santé et de La Recherche Médicale, Paris, France.
Methods in Molecular Biology (Clifton, N.J.)
|March 18, 2016
Summary
This study introduces a novel PCR-based method for creating modified enterovirus genomes, overcoming bacterial plasmid instability. The technique enables rapid generation and recovery of infectious viral RNA for further research and development.
Area of Science:
- Virology
- Molecular Biology
- Genetics
Background:
- Cloning large enterovirus RNA sequences is challenging due to plasmid instability in bacteria.
- Existing methods for generating modified enterovirus genomes are labor-intensive and inefficient.
Purpose of the Study:
- To develop a more efficient method for generating highly modified or chimeric full-length enterovirus genomes.
- To overcome the limitations of bacterial cloning for enterovirus research.
Main Methods:
- A PCR-based strategy utilizing fusion PCR to concatenate overlapping cDNA amplicons.
- Inclusion of a T7 promoter for direct transcription into infectious genomic RNA within transfected cells.
- Utilizing cells constitutively expressing phage T7 RNA polymerase for efficient transcription.
Main Results:
- Successful generation of highly modified or chimeric full-length enterovirus genomes.
- Demonstrated rapid recovery of infectious viral RNA from engineered genomes.
- Enabled subsequent amplification of modified viruses on appropriate cell lines.
Conclusions:
- The developed PCR-based fusion method offers a robust and efficient alternative for enterovirus genome engineering.
- This approach facilitates the rapid creation and recovery of modified enteroviruses for diverse research applications.
- Overcomes significant hurdles in enterovirus molecular biology and genetic manipulation.