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Induction of the anti-ergotypic response
A W Lohse1, T W Spahn, T Wölfel
1Department of Medicine, Johannes Gutenberg-University, Mainz, Germany.
International Immunology
|May 1, 1993
Summary
Injecting activated T cells induces an anti-ergotypic immune response, which may play a role in regulating the immune system. This response targets T cell activation markers and can suppress disease.
Area of Science:
- Immunology
- Cellular immunology
- T cell biology
Background:
- Syngeneic activated T cells can elicit T cell responses against their own activation markers (ergotopes).
- These anti-ergotypic T cells have demonstrated suppressive effects on experimental autoimmune encephalomyelitis (EAE).
Purpose of the Study:
- To characterize the induction and kinetics of the anti-ergotypic immune response.
- To identify the nature and presentation of the ergotope antigen.
Main Methods:
- Assessment of anti-ergotypic response induction using irradiated, fixed, or untreated activated T cells.
- Investigation of ergotope expression timing and secretion.
- Analysis of protein extracts and supernatants from activated T cells for immunogenicity.
Main Results:
- Irradiated activated T cells effectively induced anti-ergotypic responses, similar to untreated cells.
- Glutardialdehyde fixation reduced stimulatory capacity, with optimal fixation at 0.003%.
- The stimulatory ergotope is a structural component appearing >12h post-activation and is not secreted.
Conclusions:
- The anti-ergotypic response is readily induced by low cell numbers and appears to be structurally based.
- The timing, strength, and dose-dependency suggest a physiological role for anti-ergotypic responses in immunoregulation.