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Related Experiment Videos

An assay for virus-specific help for B cells

B L Pope, A J Hapel, W J Martin

    Journal of Immunological Methods
    |January 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

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    Mice pre-exposed to viruses like vaccinia or influenza showed a stronger immune response when later exposed to the same virus coupled with a chemical trigger. This suggests prior viral exposure primes the immune system for a more robust reaction.

    Area of Science:

    • Immunology
    • Virology
    • Cellular Immunology

    Background:

    • The immune system's ability to recognize and respond to specific antigens is crucial for adaptive immunity.
    • Haptenated antigens, which combine small molecules with larger carrier proteins, are often used to study immune responses.
    • Viral infections can prime the immune system, influencing subsequent responses to related or modified antigens.

    Purpose of the Study:

    • To investigate the effect of prior viral immunization on the immune response to haptenated antigens.
    • To determine if cross-reactivity or memory responses occur following viral priming and subsequent hapten-antigen stimulation.
    • To assess the enhancement of plaque-forming cell (PFC) response in virus-primed mice.

    Main Methods:

    • Spleen cells from mice immunized with vaccinia or influenza viruses were collected.

    Related Experiment Videos

  • These cells were mixed with spleen cells from mice immunized with dinitrophenyl-keyhole limpet hemocyanin (DNP-KLH).
  • Cell mixtures were transferred into irradiated syngeneic recipient mice, which were then restimulated with trinitrophenylates (TNP) or unmodified viruses, and PFC responses were measured.

    • Main Results:

    • Recipient mice receiving spleen cells from virus-primed donors exhibited an enhanced indirect anti-DNP plaque-forming cell (PFC) response.
    • This enhanced PFC response was observed when the restimulation involved the haptenated form of the virus used for initial immunization.
    • A significantly greater PFC response was noted compared to control groups using spleen cells from unprimed mice.

    Conclusions:

    • Prior immunization with vaccinia or influenza viruses can enhance subsequent immune responses to haptenated antigens derived from those viruses.
    • This suggests a form of immune priming or memory that boosts the generation of antibody-producing cells.
    • The findings highlight the potential for cross-talk between immune responses to viral antigens and haptenated carrier systems.