Electron microscopy: The key to resolve RNA viruses replication organelles

Area of Science:

• Virology
• Cell Biology
• Microscopy

Background:

• Positive-sense single-stranded RNA viruses induce extensive intracellular membrane rearrangements.
• These alterations form viral replication organelles, crucial for efficient viral genome replication.
• These organelles act as protected niches concentrating necessary components for viral reproduction.

Purpose of the Study:

• To review the impact of advanced electron microscopy (EM) techniques on understanding viral replication organelles.
• To highlight how EM advancements provide high-resolution molecular details of these structures.
• To synthesize current knowledge on the biogenesis, structure, and function of viral replication organelles.

Main Methods:

• Review of recent literature focusing on electron microscopy applications in virology.
• Analysis of studies utilizing cutting-edge EM techniques to image viral factories.
• Synthesis of findings related to the near-native imaging of viral replication organelles.

Main Results:

• Electron microscopy provides unprecedented molecular detail of viral replication organelles.
• Advancements in EM have significantly improved the visualization of viral factories in near-native states.
• These insights have accelerated the understanding of viral genome replication mechanisms.

Conclusions:

• Cutting-edge EM techniques are indispensable tools for studying viral replication organelles.
• High-resolution imaging by EM is key to elucidating the biogenesis, structure, and function of these viral factories.
• Continued application of EM will further advance our knowledge of virus-host interactions and replication strategies.