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Updated: Jun 2, 2026
Quantification of Autoreactive Antibodies in Mice upon Experimental Autoimmune Encephalomyelitis
Published on: December 1, 2023
Myelin-reactive antibodies mediate the pathology of MBP-PLP fusion protein MP4-induced EAE
Stefanie Kuerten1, Robert Pauly, Andrea Rottlaender
1Department of Anatomy I, University of Cologne, D-50931 Cologne, Germany. stefanie.kuerten@uk-koeln.de
Abstract:
Experimental autoimmune encephalomyelitis (EAE) is frequently used for studies of multiple sclerosis (MS). Because in most EAE models T cells mediate the pathology in the absence of B cells/autoantibodies, the notion has evolved that also MS may be a primarily T cell-mediated disease. We have previously introduced MBP-PLP fusion protein (MP4)-induced EAE in C57BL/6 mice. Here we show that the disease in this model is antibody-dependent. Immunization of B cell-deficient mice did not induce EAE. When such B cell-deficient mice were, however, injected with MBP/PLP-specific antibodies in addition to the immunization with MP4, they developed disease of a severity and course that was similar to the wild-type mice. The deposition of antibodies in demyelinated lesions provided further evidence for the contribution of MBP/PLP-specific antibodies to CNS lesion formation. Based upon these data we suggest a two-stage model for the involvement of MBP/PLP-specific antibodies in autoimmune CNS pathology.
Insights
Multiple Sclerosis (MS) research using Experimental Autoimmune Encephalomyelitis (EAE) models shows disease is antibody-dependent. Myelin proteins MBP/PLP-specific antibodies are crucial for CNS autoimmune pathology.
Area of Science:
- Neuroimmunology
- Autoimmune Diseases
Background:
- Experimental autoimmune encephalomyelitis (EAE) is a common model for multiple sclerosis (MS).
- Current understanding often emphasizes T cell-mediated pathology in EAE, potentially influencing MS research focus.
- Previous work established an MBP-PLP fusion protein (MP4)-induced EAE model in C57BL/6 mice.
Purpose of the Study:
- To investigate the role of antibodies in MP4-induced EAE.
- To determine if B cells and autoantibodies are essential for EAE development in this model.
- To elucidate the mechanism of autoimmune central nervous system (CNS) pathology.
Main Methods:
- Induction of EAE in B cell-deficient mice using MP4 immunization.
- Passive transfer of MBP/PLP-specific antibodies to B cell-deficient mice.
- Analysis of disease severity, course, and antibody deposition in demyelinated lesions.
Main Results:
- EAE induction failed in B cell-deficient mice.
- MP4 immunization combined with MBP/PLP-specific antibodies successfully induced EAE in B cell-deficient mice, mirroring wild-type disease.
- Significant deposition of MBP/PLP-specific antibodies was observed in CNS demyelinated lesions.
Conclusions:
- The MP4-induced EAE model is critically dependent on B cells and autoantibodies.
- MBP/PLP-specific antibodies play a direct role in CNS autoimmune lesion formation.
- A two-stage model is proposed for MBP/PLP-specific antibody involvement in autoimmune CNS pathology, highlighting antibody-driven mechanisms in EAE and potentially MS.
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