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Trick-or-Trap: Extracellular Vesicles and Viral Transmission

Journal

VACCINES
Volume 11, Issue 10, Pages -

Publisher

MDPI
DOI: 10.3390/vaccines11101532

Keywords

extracellular vesicles; viral transmission; collective infectious units; cluster transmission; vesicle transmission

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Extracellular vesicles play crucial roles in viral transmission, facilitating collective transmission of viral genomes and protecting viral particles, which are essential for understanding virus evolution and developing antiviral strategies.
Extracellular vesicles (EVs) are lipid membrane-enclosed particles produced by most cells, playing important roles in various biological processes. They have been shown to be involved in antiviral mechanisms such as transporting antiviral molecules, transmitting viral resistance, and participating in antigen presentation. While viral transmission was traditionally thought to occur through independent viral particles, the process of viral infection is complex, with multiple barriers and challenges that viruses must overcome for successful infection. As a result, viruses exploit the intercellular communication pathways of EVs to facilitate cluster transmission, increasing their chances of infecting target cells. Viral vesicle transmission offers two significant advantages. Firstly, it enables the collective transmission of viral genomes, increasing the chances of infection and promoting interactions between viruses in subsequent generations. Secondly, the use of vesicles as vehicles for viral transmission provides protection to viral particles against environmental factors, while also expanding the cell tropism allowing viruses to reach cells in a receptor-independent manner. Understanding the role of EVs in viral transmission is crucial for comprehending virus evolution and developing innovative antiviral strategies, therapeutic interventions, and vaccine approaches.

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