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Updated: Jul 18, 2026
Adipose-Derived Mesenchymal Stromal Cells Co-Cultured with Primary Mixed Glia to Reduce Prion-Induced Inflammation
Published on: August 11, 2023
Microglial cell line established from prion protein-overexpressing mice is susceptible to various murine prion
Yoshifumi Iwamaru1, Takato Takenouchi, Kazumasa Ogihara
1Research Center for Prion Diseases, National Institute of Animal Health, Kannondai 3-1-5, Tsukuba, Ibaraki 305-8602, Japan.
Abstract:
Several lines of evidence suggest that microglia have important roles in the pathogenesis of prion diseases. Here, we establish a novel microglial cell line (MG20) from neonatal tga20 mice that overexpress murine prion protein. After exposure to Chandler scrapie, we observed the replication and accumulation of disease-associated forms of the prion protein in MG20 cells up to the 15th passage. Furthermore, MG20 cells were susceptible to ME7, Obihiro scrapie, and bovine spongiform encephalopathy agents. Thus, MG20 cell lines persistently infected with various murine prion strains provide a useful model for the study of the pathogenesis of prion diseases.
Insights
A new microglial cell line (MG20) was developed from prion protein-overexpressing mice. This cell line supports prion replication and infection, offering a valuable model for studying prion diseases.
Area of Science:
- Neuroscience
- Infectious Diseases
- Cell Biology
Background:
- Microglia are implicated in the pathogenesis of prion diseases.
- Existing models may not fully capture microglial roles in prion propagation.
Purpose of the Study:
- To establish a novel microglial cell line for prion disease research.
- To characterize the susceptibility of this cell line to various prion strains.
Main Methods:
- Generation of a microglial cell line (MG20) from neonatal tga20 mice overexpressing prion protein.
- Infection of MG20 cells with Chandler scrapie, ME7, Obihiro scrapie, and bovine spongiform encephalopathy agents.
- Monitoring prion protein replication and accumulation in infected cells.
Main Results:
- MG20 cells showed sustained replication and accumulation of disease-associated prion protein up to the 15th passage after Chandler scrapie exposure.
- MG20 cells were susceptible to ME7, Obihiro scrapie, and bovine spongiform encephalopathy agents.
- Demonstrated persistent infection of MG20 cells with different prion strains.
Conclusions:
- The novel MG20 microglial cell line is a robust in vitro model for prion diseases.
- This model facilitates the study of microglial involvement in prion pathogenesis.
- MG20 cells support persistent infection with diverse prion strains, aiding research into disease mechanisms.
