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Involvement of macrophages in the pathogenesis of transmissible spongiform encephalopathies
Vincent Beringue1, Patrick Couvreur, Dominique Dormont
1CEA, Service de Neurovirologie, DRM/DSV, CRSSA, Fontenay aux Roses, France. beringue@jouy.inra.fr
Abstract:
Although transmissible spongiform encephalopathies (TSE) or prion diseases are neurodegenerative disorders, the immune system is also involved, at least in the early stages of their pathogenesis. Extensive studies have focused on cells targeted by the TSE agent for its replication but few on the possible involvement of macrophages in its clearance, as in more conventional diseases. This review summarises some of the experiments aimed at demonstrating a role for macrophages in TSE and presents the application to TSE of the macrophage "suicide" technique, which has been used to clarify the implication of these cells in the early steps of TSE pathogenesis.
Insights
Macrophages may play a role in clearing transmissible spongiform encephalopathies (TSEs), also known as prion diseases. This review explores experiments investigating macrophage involvement in early TSE pathogenesis.
Area of Science:
- Neuroimmunology
- Prion Disease Research
Background:
- Transmissible spongiform encephalopathies (TSEs) are neurodegenerative disorders.
- The immune system, particularly macrophages, may be involved in early TSE pathogenesis.
- Limited research exists on macrophage involvement in clearing TSE agents.
Purpose of the Study:
- To review experiments demonstrating a role for macrophages in TSE.
- To present the application of the macrophage "suicide" technique to TSE.
Main Methods:
- Review of experimental studies on macrophages in TSE.
- Application of the "suicide" technique to study macrophage implication in early TSE pathogenesis.
Main Results:
- Experiments suggest macrophages may be involved in TSE pathogenesis.
- The "suicide" technique helps clarify the role of macrophages in early TSE stages.
Conclusions:
- Macrophages are potentially involved in the early stages of transmissible spongiform encephalopathies.
- Further research using techniques like macrophage depletion is warranted to fully elucidate their role.