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Vaccination or tolerance to prevent diabetes.
S Oehen1, P S Ohashi, P Aichele
1Department of Pathology, University of Zurich, Switzerland.
European Journal of Immunology
|December 1, 1992
Summary
Vaccinating against T cell-mediated diseases like diabetes is possible. A non-self antigen vaccine prevented disease in mice, unlike self-antigen vaccines, highlighting immune modulation strategies.
Area of Science:
- Immunology
- Virology
- Autoimmunity
Background:
- Transgenic mice expressing lymphocytic choriomeningitis virus glycoprotein (GP) under the rat insulin promoter (RIP) develop potentially self-reactive T cells.
- These T cells can be activated by self or cross-reactive viral peptides, leading to autoimmune diseases like diabetes.
Purpose of the Study:
- To evaluate vaccination strategies against T cell-mediated immunopathological diseases in the RIP-GP transgenic mouse model.
- To investigate methods for preventing virally induced diabetes.
Main Methods:
- Utilized RIP-GP transgenic mice (Bln line).
- Tested vaccination with self-antigen (recombinant vaccinia virus expressing LCMV-GP).
- Tested vaccination with a non-GP LCMV vaccine (recombinant vaccinia virus expressing LCMV-nucleoprotein, vacc-NP).
- Investigated tolerance induction via neonatal methods or irradiation and bone marrow reconstitution.
Main Results:
- Vaccination with the self-antigen (LCMV-GP) failed to protect mice from disease.
- Immunization with vacc-NP prevented autoimmune diabetes in an MHC-dependent manner.
- Tolerance induction, either neonatally or post-irradiation, consistently prevented virally induced diabetes.
Conclusions:
- Vaccination with a non-self antigen (vacc-NP) can modulate immune responses to prevent autoimmune disease.
- Tolerance induction is a robust strategy for preventing virally induced autoimmune diabetes.
- MHC plays a crucial role in the efficacy of immune modulation for preventing autoimmune conditions.