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Nuclear targeting of SV40 and adenovirus

U F Greber1, H Kasamatsu

  • 1Dept of Zoology, Cell Biology Section, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.

Trends in Cell Biology
|May 1, 1996
PubMed

Insights

Viral DNA import into the host cell nucleus is crucial for DNA tumor virus replication. Viruses like SV40 and adenovirus use distinct strategies involving nuclear pore complexes and viral proteins to achieve nuclear entry.

Area of Science:

  • Cell Biology
  • Virology
  • Molecular Biology

Background:

  • Nuclear import of viral DNA is essential for DNA tumor virus replication.
  • Viruses must overcome cellular barriers to reach the host cell nucleus.
  • Different DNA tumor viruses employ unique mechanisms for nuclear entry.

Purpose of the Study:

  • To elucidate the distinct mechanisms of nuclear entry for Simian Virus 40 (SV40) and adenovirus.
  • To explore how viral strategies for nuclear transport can inform our understanding of host cell nuclear transport.

Main Methods:

  • Comparative analysis of viral DNA import pathways.
  • Review of existing literature on SV40 and adenovirus nuclear entry.
  • Discussion of the role of karyophilic viral proteins in nuclear transport.

Main Results:

  • SV40 DNA enters the nucleus intact via nuclear pore complexes (NPCs).
  • Adenovirus particles disassemble near the NPC before DNA import.
  • Both viruses utilize viral protein components to mediate genome nuclear entry.

Conclusions:

  • Understanding virus-host interactions provides insights into nuclear transport mechanisms.
  • Viral strategies for nuclear entry highlight the importance of NPCs and protein-mediated transport.
  • Further research into viral nuclear import can advance the study of cellular nuclear transport.

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