Generation of infectious virus particles from inducible transgenic genomes
Mathias F Wernet1, Martha Klovstad1, Thomas R Clandinin1
1Department of Neurobiology, Stanford University School of Medicine, Stanford, CA 94305, USA.
Abstract:
Arboviruses like dengue virus, yellow fever virus, and West Nile virus are enveloped particles spread by mosquitoes, infecting millions of humans per year, with neither effective vaccines, nor specific antiviral therapies [1,2]. Previous studies of infection and virus replication utilize either purified virus particles or deficient genomes that do not complete the viral life cycle [1,2]. Here we describe transgenic Drosophila strains expressing trans-complementing genomes (referred to as 'replicons') from the arbovirus Sindbis [2]. We use this binary system to produce, for the first time in any metazoan, infectious virus particles through self-assembly from transgenes. Such cell-type specific particle 'launching' could serve as an attractive alternative for the development of virus-based tools and the study of virus biology in specific tissues.
Insights
Researchers created transgenic Drosophila to produce infectious arboviruses, like Sindbis virus, from engineered genomes. This breakthrough enables studying virus behavior in specific tissues and developing new virus-based tools.
Area of Science:
- Virology
- Molecular Biology
- Genetics
Background:
- Arboviruses, including dengue and West Nile viruses, cause significant global health burdens with limited treatment options.
- Current research methods often use incomplete viral genomes or purified particles, hindering a full understanding of the viral life cycle.
Discussion:
- This study introduces a novel system using trans-complementing Sindbis virus replicons in transgenic Drosophila.
- This binary system allows for the production of infectious virus particles through transgene-mediated self-assembly within the fly.
Key Insights:
- For the first time in a metazoan, infectious arbovirus particles are generated entirely from transgenes.
- This method enables cell-type specific 'launching' of virus particles, offering unprecedented control.
Outlook:
- This technology provides a powerful new platform for studying arbovirus replication and pathogenesis in vivo.
- It opens avenues for developing innovative virus-based biotechnological tools and therapeutic strategies.
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