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Bacterial Artificial Chromosome Reverse Genetics Approaches for SARS-CoV-2
Kevin Chiem1, Aitor Nogales2, Fernando Almazán3
1Texas Biomedical Research Institute, San Antonio, TX, USA.
Methods in Molecular Biology (Clifton, N.J.)
|December 8, 2023
Summary
Researchers engineered infectious SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) using reverse genetics. This method aids in studying viral infection, identifying antivirals, and developing live-attenuated vaccines for COVID-19 prevention.
Area of Science:
- Virology
- Molecular Biology
- Infectious Diseases
Background:
- Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes the COVID-19 pandemic, leading to millions of infections and deaths globally.
- Reverse genetics offers powerful tools for manipulating viral genomes to study virus biology and develop countermeasures.
Purpose of the Study:
- To describe a robust bacterial artificial chromosome (BAC)-based reverse genetics system for generating recombinant SARS-CoV-2 (rSARS-CoV-2).
- To enable the study of viral protein functions, pathogenesis, and host interactions.
- To facilitate the development of antiviral therapies and live-attenuated vaccines (LAVs).
Main Methods:
- Utilized a bacterial artificial chromosome (BAC)-based reverse genetics system.
- Generated wild-type and mutant rSARS-CoV-2.
- Engineered rSARS-CoV-2 expressing reporter genes for antiviral screening.
Main Results:
- Successfully produced infectious rSARS-CoV-2, including wild-type and mutant strains.
- Demonstrated the utility of rSARS-CoV-2 for investigating viral replication, pathogenesis, and host-virus interactions.
- Established a platform for rapid antiviral compound identification and vaccine development.
Conclusions:
- The described BAC-based reverse genetics system is a versatile tool for SARS-CoV-2 research.
- This methodology advances our understanding of SARS-CoV-2 and supports the development of effective COVID-19 interventions.
- Facilitates the generation of tools for studying viral mechanisms and therapeutic strategies.
