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Related Experiment Videos

Screening procedure for complementation-dependent mutants of vesicular stomatitis virus.

C W Rettenmier, R Dumont, D Baltimore

    Journal of Virology
    |January 1, 1975
    PubMed
    Summary

    Researchers developed a novel screen to identify new vesicular stomatitis virus (VSV) mutants. This screen identified temperature-sensitive mutants and complementation-dependent mutants, expanding the known complementation groups for VSV Indiana.

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    Area of Science:

    • Virology
    • Molecular Biology
    • Genetics

    Background:

    • Vesicular stomatitis virus (VSV) is a significant pathogen with a complex genetic structure.
    • Understanding VSV mutants is crucial for deciphering viral replication and pathogenesis.
    • Existing complementation groups for VSV Indiana provided a framework for mutant classification.

    Purpose of the Study:

    • To develop and implement a novel four-stage screening strategy for isolating new VSV mutants.
    • To characterize novel temperature-sensitive (ts) and complementation-dependent (cd) VSV mutants.
    • To expand the understanding of VSV complementation groups and genetic diversity.

    Main Methods:

    • A four-stage genetic screen was designed to identify and characterize VSV mutants.

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  • The screen focused on mutants complementing the defect in the tsG11 VSV temperature-sensitive mutant.
  • Mutant characterization included plaque assays at permissive temperatures and nucleic acid analysis.

    • Main Results:

    • Two novel types of VSV mutants (Indiana serotype) were identified: new ts mutants and cd mutants.
    • The newly isolated ts mutants were assigned to three complementation groups, including one novel group, expanding VSV Indiana groups to six.
    • Complementation-dependent mutants did not produce plaques under single infection conditions at 31°C; one showed no significant nucleic acid deletion.

    Conclusions:

    • The developed screening method is effective for isolating and characterizing novel VSV mutants.
    • The study identified new ts and cd VSV mutants, contributing to a more comprehensive understanding of VSV genetics.
    • Further investigation is needed to elucidate the precise nature of the complementation-dependent mutants.