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The effects of interferon and double-stranded RNA upon the virus-host interaction: studies with togavirus strains in

C J Bradish, D Titmuss

    The Journal of General Virology
    |March 1, 1981
    PubMed

    Insights

    Fibroblast interferon and fungal double-stranded RNA (dsRNA) reduced viral effective dose and primary replication in mice. However, neither agent altered virulence expression or protective immunity outcomes against togaviruses.

    Area of Science:

    • Virology
    • Immunology
    • Antiviral Research

    Background:

    • Interferon and double-stranded RNA (dsRNA) are known to induce antiviral states.
    • Understanding their precise impact on viral infection dynamics and host immune responses is crucial for developing effective therapies.

    Purpose of the Study:

    • To compare the effects of fibroblast interferon and fungal dsRNA on viral infection and host immunity.
    • To investigate the influence of these agents on viral clearance, replication, virulence, and protective immunity.

    Main Methods:

    • Administration of graded doses of interferon and dsRNA to mice before togavirus infection.
    • Infection with virulent or avirulent strains of Semliki Forest virus, Venezuelan equine encephalomyelitis virus, and yellow fever virus.
    • Comparison of infection efficiency, replication extent, virulence expression, and protective immunity.

    Main Results:

    • Both interferon and dsRNA reduced the effective dose of virus and influenced primary replication and host stimulation.
    • Interferon and dsRNA acted through quantitatively different mechanisms.
    • Neither agent altered the expression of virulence or protective immunity.

    Conclusions:

    • Interferon and dsRNA can modulate early stages of viral infection, primarily affecting replication.
    • These agents do not influence the established immune response, including virulence or protective immunity.
    • Findings suggest potential for controlling virus infections before immune stimulation becomes effective.

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