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A DNA recombination-based approach to eliminate papillomavirus infection

A Carson1, Z Wang, X Xiao

  • 1Department of Molecular Genetics and Biochemistry, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA.

Gene Therapy
|March 10, 2005
PubMed

Insights

This study introduces a novel strategy to combat papillomaviruses (PVs) by conditionally expressing the herpes simplex virus type 1 thymidine kinase (TK) gene. This approach, utilizing homologous recombination and adeno-associated virus (AAV) vectors, successfully eliminated PV-infected cells.

Area of Science:

  • Molecular Biology
  • Virology
  • Gene Therapy

Background:

  • Papillomaviruses (PVs) lack effective treatments for eliminating infected cells or halting replication.
  • Current therapeutic strategies do not target PV replication within host cells.

Purpose of the Study:

  • To develop a novel gene therapy approach for targeting and eliminating PV-infected cells.
  • To investigate the conditional expression of herpes simplex virus type 1 thymidine kinase (TK) for PV treatment.

Main Methods:

  • Constructing gene expression cassettes for conditional TK expression.
  • Utilizing homologous recombination between PV genomes and TK gene cassettes.
  • Employing adeno-associated virus (AAV) vectors for gene delivery.
  • Assessing TK expression via Northern and Western blot analyses.
  • Evaluating cell killing efficacy post-ganciclovir treatment.

Main Results:

  • Conditional TK expression was achieved through homologous recombination in PV-infected cells.
  • AAV vector delivery successfully introduced the TK expression cassette into target cells.
  • Treatment of PV-infected cells with ganciclovir resulted in efficient cell elimination.

Conclusions:

  • The developed strategy demonstrates a promising approach for targeting and eradicating PV-infected cells.
  • Conditional TK expression, facilitated by homologous recombination and AAV vectors, offers a potential therapeutic avenue for PV infections.

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