Filamentous Influenza Viruses
Matthew D Badham1, Jeremy S Rossman1
1School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK.
Abstract:
Influenza A virus is a pathogen of global medical importance causing significant health and socio-economic costs every year. Influenza virus is an unusual pathogen in that it is pleomorphic, capable of forming virions ranging in shape from spherical to filamentous. Despite decades of research on the influenza virus, much remains unknown about the formation of filamentous influenza viruses and their role in the viral replication cycle. Here, we discuss what is known about influenza virus assembly and budding, focusing on the viral and host factors that are involved in the determination of viral morphology. Whilst the biological function of the filamentous morphology remains unknown, recent results suggest a role in facilitating viral spread in vivo. We discuss these results and speculate on the consequences of viral morphology during influenza virus infection of the human respiratory tract.
Insights
Influenza A virus can be spherical or filamentous. Researchers are exploring viral and host factors influencing filamentous influenza virus formation and its role in infection spread.
Area of Science:
- Virology
- Microbiology
- Pathogen Research
Background:
- Influenza A virus (IAV) is a significant global pathogen.
- IAV exhibits pleomorphism, forming spherical and filamentous virions.
- The formation and function of filamentous IAV remain poorly understood.
Purpose of the Study:
- To review current knowledge on IAV assembly and budding.
- To identify viral and host factors determining IAV morphology.
- To discuss the potential role of filamentous morphology in viral spread.
Main Methods:
- Literature review and synthesis of existing research.
- Analysis of viral and host factors involved in IAV morphogenesis.
- Discussion of recent findings on filamentous IAV in vivo.
Main Results:
- IAV assembly and budding involve complex viral and host interactions.
- Specific factors influencing the determination of viral morphology are highlighted.
- Emerging evidence suggests filamentous IAV may aid in viral dissemination.
Conclusions:
- Understanding IAV morphology is crucial for comprehending its replication cycle.
- Filamentous IAV morphology may play a role in facilitating in vivo spread.
- Further research is needed to elucidate the biological significance of filamentous IAV.
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