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Related Experiment Videos

Recombination in alphaherpesviruses.

Etienne Thiry1, François Meurens, Benoît Muylkens

  • 1Department of Infectious and Parasitic Diseases, Laboratory of Virology and Immunology, Faculty of Veterinary Medicine, University of Liège, Sart-Tilman, Liège, Belgium. etienne.thiry@ulg.ac.be

Reviews in Medical Virology
|November 17, 2004
PubMed
Summary

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Recombination is a key evolutionary force for alphaherpesviruses, driving genetic diversity and influencing virulence. Studying coinfected cells helps understand this process and its implications for therapies and vaccines.

Area of Science:

  • Virology
  • Molecular Biology
  • Evolutionary Biology

Background:

  • Alphaherpesvirinae subfamily comprises numerous mammalian and avian viruses within the Herpesviridae family.
  • Low nucleotide substitution rates highlight recombination as a crucial evolutionary driver, though often underestimated.
  • Recombination is intrinsically linked to DNA replication in alphaherpesviruses, involving both viral and cellular proteins.

Purpose of the Study:

  • To investigate the role and mechanisms of recombination in alphaherpesviruses.
  • To explore how recombination influences viral evolution, virulence, and genetic diversity.
  • To assess the implications of alphaherpesvirus recombination for biosafety in therapeutic and vaccine development.

Main Methods:

  • Analysis of concatemers from cells coinfected with distinguishable alphaherpesviruses.

Related Experiment Videos

  • Studying recombination-dependent replication involving viral and cellular proteins.
  • Examining the impact of factors like virus dose, inoculation time, and genetic homology on recombination.

    • Main Results:

    • Recombination facilitates segment inversion in alphaherpesvirus genomes via inverted repeats.
    • Coinfection studies using concatemers offer an unbiased method to analyze recombination.
    • Both intraspecific and interspecific recombination occur, with the latter requiring sufficient sequence similarity.
    • Successful recombination necessitates coinfection of the host by different virus strains or species.

    Conclusions:

    • Recombination is a significant evolutionary mechanism for alphaherpesviruses, impacting their genetic makeup and virulence.
    • Understanding recombination is critical for evaluating the biosafety of antiviral therapies, gene therapy vectors, and live attenuated vaccines derived from alphaherpesviruses.