Completion of Hepatitis C Virus Replication Cycle in Heterokaryons Excludes Dominant Restrictions in Human Non-liver and Mouse Liver Cell Lines
2011

HCV Replication Cycle in Human and Mouse Cells

publication Evidence: high

Author Information

Author(s): Frentzen Anne, Hüging Kathrin, Bitzegeio Julia, Friesland Martina, Haid Sibylle, Gentzsch Juliane, Hoffmann Markus, Lindemann Dirk, Zimmer Gert, Zielecki Florian, Weber Friedemann, Steinmann Eike, Pietschmann Thomas

Primary Institution: TWINCORE, Centre for Experimental and Clinical Infection Research, Hannover, Germany

Hypothesis

Do dominant restriction factors in non-liver or non-human cell lines inhibit HCV propagation?

Conclusion

HCV can complete its replication cycle in heterokaryons formed between human liver cells and non-permissive cell lines, indicating that dominant restriction factors do not prevent HCV propagation in these cells.

Supporting Evidence

  • HCV replication was observed in human non-hepatic and murine cell lines, albeit at low efficiency.
  • Trans-complementation assays demonstrated that HCV can produce infectious particles in heterokaryons.
  • The study ruled out that dominant restriction factors prevent HCV propagation in non-permissive cell lines.

Takeaway

Scientists found that the hepatitis C virus can grow in cells that usually don't allow it, which helps us understand how the virus spreads and how to create better treatments.

Methodology

The study used cell fusion techniques to create heterokaryons between human liver cells and non-permissive cell lines to assess HCV replication.

Limitations

The study does not quantify the specific host factors that may limit HCV propagation in mouse cells.

Digital Object Identifier (DOI)

10.1371/journal.ppat.1002029

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