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Treatment by CpG or Flt3-ligand does not affect mouse susceptibility to BSE prions
Grégory Doré1, Claude Leclerc, Françoise Lazarini
1Institut Pasteur, Repliement et Modélisation des Protéines, Dpt Biologie Structurale et Chimie, 25 rue du Dr Roux, F-75015, Paris, France.
Abstract:
Dendritic cells (DC) have been suspected to play an important role in prion diseases. We evaluated the role of DC in a murine model of Bovine Spongiform Encephalopathy (BSE) by the use of the growth factor Flt3 ligand, which stimulates DC generation, and CpG oligodeoxynucleotides, which induce DC maturation. We observed that pre-treatments or treatments with Flt3-L or CpG alter neither the time course of prion disease nor the accumulation of the protease-resistant prion protein in intraperitoneally infected mice.
Insights
Dendritic cells (DC) do not influence prion disease progression or prion protein accumulation in mice, even when stimulated. This study investigated the role of DCs in Bovine Spongiform Encephalopathy (BSE) models.
Area of Science:
- Neuroimmunology
- Prion Biology
- Cellular Immunology
Background:
- Dendritic cells (DCs) are immune cells implicated in various neurological conditions.
- Their specific role in prion diseases, such as Bovine Spongiform Encephalopathy (BSE), remains unclear.
- Understanding DC function is crucial for developing therapeutic strategies against neurodegenerative diseases.
Purpose of the Study:
- To investigate the functional role of dendritic cells (DCs) in the pathogenesis of prion diseases.
- To determine if modulating DC generation and maturation affects the course of Bovine Spongiform Encephalopathy (BSE) in a murine model.
Main Methods:
- Utilized a murine model of Bovine Spongiform Encephalopathy (BSE).
- Administered Flt3 ligand (Flt3-L) to stimulate DC generation.
- Used CpG oligodeoxynucleotides to induce DC maturation.
- Monitored disease progression and prion protein accumulation.
Main Results:
- Neither Flt3-L nor CpG treatment altered the disease time course in infected mice.
- The accumulation of protease-resistant prion protein was not affected by DC modulation.
- These findings suggest DCs do not play a significant role in the progression of intraperitoneal prion disease in this model.
Conclusions:
- Modulating dendritic cell (DC) populations with Flt3-L or CpG does not impact the progression or pathology of prion diseases in mice.
- Dendritic cells may not be a critical factor in the pathogenesis of BSE or other prion encephalopathies.
- Further research is needed to fully elucidate the complex interplay between the immune system and prion diseases.
