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Related Experiment Videos

Simian agent 8 (SA8): morphogenesis and ultrastructure

K Borchers1, M Ozel

  • 1Institut für Virologie der Freien Universität Berlin, Germany.

Zentralblatt Fur Bakteriologie : International Journal of Medical Microbiology
|November 1, 1993
PubMed
Summary
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This study details SA8 virus morphogenesis in rabbit brain cells. It reveals virus particles envelop within the endoplasmic reticulum and transport to the cell membrane for release.

Area of Science:

  • Virology
  • Cell Biology
  • Microscopy

Background:

  • SA8 virus morphogenesis is not fully understood.
  • Understanding viral replication pathways is crucial for developing antiviral strategies.

Purpose of the Study:

  • To elucidate the morphogenesis of SA8 virus in primary rabbit brain cell cultures.
  • To investigate the intracellular transport and envelopment mechanisms of SA8 virions.

Main Methods:

  • Electron microscopy was employed to observe SA8 virus replication in rabbit brain cells.
  • Detailed ultrastructural analysis was performed on infected cells at various stages.

Main Results:

  • Nucleocapsid envelopment occurs at the inner nuclear membrane and endoplasmic reticulum (ER).

Related Experiment Videos

  • Virus particles are transported via ER cisternae to the plasma membrane.
  • De-envelopment and capsid egress into the cytoplasm were observed, with subsequent envelopment into ER or vesicles.
  • Tegumentation appears to occur during envelopment into cytoplasmic vesicles and at the plasma membrane.

    • Conclusions:

    • SA8 virus utilizes both nuclear and cytoplasmic pathways for replication and egress.
    • The endoplasmic reticulum plays a key role in viral transport and envelopment.
    • Tegument formation is associated with specific envelopment events in the cytoplasm.