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T cell-dependent antibody response to staphylococcal enterotoxin B
O Williams1, L S Aroeira, J Mengel
1Department of Immunology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Brazil.
Scandinavian Journal of Immunology
|September 1, 1995
Summary
Staphylococcal enterotoxin B (SEB) treatment induces T-cell tolerance but primes T helper cells. This priming supports a robust secondary antibody response, demonstrating dual immune effects.
Area of Science:
- Immunology
- Microbiology
Background:
- Staphylococcal enterotoxin B (SEB) induces T-cell tolerance, involving T-cell deletion and anergy.
- Understanding the concurrent humoral immune response to SEB is crucial.
Purpose of the Study:
- To investigate the humoral immune response to SEB in BALB/c mice.
- To determine if SEB induces immune memory.
Main Methods:
- Mice were treated with SEB to assess antibody production.
- Humoral responses were analyzed for characteristics of primary and secondary responses.
- T-cell dependency and B-cell help were evaluated.
Main Results:
- SEB immunization elicited an anti-SEB antibody response.
- Subsequent SEB treatment accelerated and amplified antibody levels, indicating a secondary response.
- The secondary response was T-cell dependent and involved IgM, IgG1, and IgG2b isotypes.
Conclusions:
- SEB induces T-cell tolerance while simultaneously priming T helper cells.
- Primed T helper cells facilitate a secondary humoral response to SEB.
- This highlights a dual role of SEB in immune modulation.