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Updated: Aug 11, 2026

Generation of Multivirus-specific T Cells to Prevent/treat Viral Infections after Allogeneic Hematopoietic Stem Cell Transplant
08:52

Generation of Multivirus-specific T Cells to Prevent/treat Viral Infections after Allogeneic Hematopoietic Stem Cell Transplant

Published on: May 27, 2011

Cytotoxic macrophages: a rapid nonspecific response to viral infection

S J Rodda, D O White

    Journal of Immunology (Baltimore, Md. : 1950)
    |December 1, 1976
    PubMed

    Insights

    This study reveals that macrophages, T cells, and antibodies contribute to clearing Semliki Forest virus infection in mice. Immune responses rapidly eliminate virus-infected cells.

    Area of Science:

    • Immunology
    • Virology
    • Cellular Biology

    Background:

    • Semliki Forest virus (SFV) infection in BALB/c mice serves as a model for studying viral pathogenesis.
    • Understanding the immune mechanisms responsible for clearing viral infections is crucial for developing effective treatments.

    Purpose of the Study:

    • To investigate the distinct roles of various immune cytolysis mechanisms in eliminating SFV-infected cells.
    • To characterize the temporal dynamics of different immune cell populations and antibody responses during SFV infection.

    Main Methods:

    • Development of in vitro and in vivo assays to assess immune cell-mediated cytolysis.
    • Monitoring the appearance, peak activity, and disappearance of macrophages, T cells, and cytotoxic antibodies.
    • Quantifying viral yield from cultured cells and observing the fate of infected cells in vivo.

    Main Results:

    • Nonspecific cytotoxic activated macrophages emerge early (day 1), peaking at days 2-3.
    • Virus-specific T cells appear around day 3, with peak activity on day 6.
    • Cytotoxic antibodies are detected from day 4, reaching high titers by day 8.
    • Immune spleen cells significantly reduce viral yield in vitro.
    • Infected cells are rapidly cleared upon transfer into infected animals.

    Conclusions:

    • Multiple immune components, including macrophages, T cells, and antibodies, orchestrate the elimination of SFV-infected cells.
    • The sequential and coordinated action of these immune effectors is vital for viral clearance.

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