[Cellular ESCRT complex and its roles in enveloped viruses budding]

Area of Science:

• Cell Biology
• Virology
• Molecular Biology

Context:

• Multivesicular bodies (MVBs) are essential for lysosomal protein degradation in eukaryotic cells.
• The endosomal sorting complex required for transport (ESCRT) machinery governs MVB biogenesis and protein sorting.
• ESCRT is also implicated in various cellular processes, including cytokinesis and enveloped virus budding.

Purpose:

• To explore the role of the ESCRT complex in the life cycle of viruses.
• To investigate the interaction between viral components and the ESCRT machinery.
• To understand the ESCRT complex's involvement in the egress of DNA viruses.

Summary:

• The ESCRT complex, vital for MVB formation and protein trafficking, interacts with viral late-domain motifs to facilitate the assembly and budding of retroviruses and RNA viruses.
• Emerging research indicates that the ESCRT pathway is also indispensable for the efficient release of specific DNA viruses, such as Hepatitis B virus, herpes simplex virus type-1, and Autographa californica multiple nucleopolyhedrovirus.
• Further studies on virus-ESCRT interactions are necessary to elucidate the precise mechanisms of viral assembly and egress.

Impact:

• Provides insights into the conserved mechanisms of viral budding and egress across different virus types.
• Identifies the ESCRT complex as a potential target for antiviral therapies.
• Expands the understanding of ESCRT's multifaceted roles in cellular and viral processes.