Related Experiment Video
Updated: May 18, 2026
11:31
Generation of Recombinant Influenza Virus from Plasmid DNA
Published on: August 3, 2010
Partial and full PCR-based reverse genetics strategy for influenza viruses.
Hongjun Chen1, Jianqiang Ye, Kemin Xu
1Virginia-Maryland Regional College of Veterinary Medicine, Department of Veterinary Medicine, University of Maryland, College Park, Maryland, United States of America.
Plos One
|October 3, 2012
Summary
This study introduces novel plasmid-free reverse genetics systems for influenza virus research, overcoming common cloning challenges. These systems efficiently rescue influenza viruses using PCR amplicons, simplifying influenza virus studies.
Area of Science:
- Virology
- Molecular Biology
Background:
- Plasmid-based reverse genetics (RG) has been pivotal for influenza virus research since 1999.
- Cloning difficulties for influenza genes can impede de novo virus recovery.
Purpose of the Study:
- To develop partial or full plasmid-free RG systems for influenza virus research.
- To overcome cloning challenges associated with traditional RG methods.
Main Methods:
- Assembling influenza genes into RG-competent units using overlapping PCR, creating Flu PCR amplicons.
- Transfecting cells with Flu PCR amplicons and varying numbers of RG plasmids (7 or 6) for virus rescue.
- Testing a full set of Flu PCR amplicons without any plasmids.
Main Results:
- Efficient influenza virus rescue was achieved using partial plasmid-free systems (HA or NA amplicons with 7 plasmids).
- Efficient virus rescue was also observed with both HA and NA amplicons and 6 plasmids.
- Influenza viruses were successfully recovered using a complete set of Flu PCR amplicons, entirely eliminating the need for plasmids.
Conclusions:
- Partial and full plasmid-free RG systems offer efficient alternatives for influenza virus recovery.
- These novel systems simplify influenza virus research by circumventing cloning difficulties.
- The development of plasmid-free RG systems represents a significant advancement in influenza virus study methodologies.
