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Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency
18:10

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Published on: June 16, 2011

Negative effects of chemical mutagenesis on the adaptive behavior of vesicular stomatitis virus

C H Lee1, D L Gilbertson, I S Novella

  • 1Department of Biology and Institute of Molecular Genetics, University of California, San Diego, La Jolla 92093, USA.

Journal of Virology
|May 1, 1997
PubMed

Insights

Chemical mutagens did not improve vesicular stomatitis virus (VSV) adaptability. However, mutagen-treated VSV populations recovered fitness after passages, highlighting RNA viruses

Area of Science:

  • Virology
  • Molecular Biology
  • Genetics

Background:

  • Vesicular stomatitis virus (VSV), an RNA virus, is a model for studying viral adaptability.
  • Chemical mutagens are used to induce genetic changes in viruses.
  • Understanding viral response to mutagenesis is crucial for antiviral development.

Purpose of the Study:

  • To investigate the impact of chemical mutagens on VSV adaptability and viability.
  • To determine if mutagenesis can enhance VSV fitness.
  • To explore the recovery potential of mutagen-treated VSV populations.

Main Methods:

  • VSV variants were treated with varying levels of chemical mutagens.
  • Virus viability and adaptability were assessed under different mutagenesis conditions.
  • Mutagen-treated populations with reduced fitness were passaged in BHK21 cells to observe recovery.

Main Results:

  • No improvement in VSV viability or adaptability was observed with increasing mutagenesis.
  • Increasing mutagenesis levels led to inhibition of virus production and adaptability.
  • Mutagen-treated VSV populations regained full fitness after serial passages in BHK21 cells.

Conclusions:

  • RNA viruses, like VSV, are highly optimized and possess significant adaptive potential.
  • Severe fitness decline induced by mutagenesis can be reversible.
  • Findings have implications for designing mutagenic antiviral agents.

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