Related Experiment Videos
Impaired motor coordination in mice lacking prion protein
S Katamine1, N Nishida, T Sugimoto
1Department of Bacteriology, Nagasaki University School of Medicine, Japan.
Cellular and Molecular Neurobiology
|January 7, 1999
Summary
The prion protein (PrPC) is vital for Purkinje cell survival and essential for prion disease development and propagation in mice. Its absence protects against prion infection.
Area of Science:
- Neuroscience
- Molecular Biology
- Prion Diseases
Background:
- Prion protein (PrPC) is a cell surface glycoprotein with an unknown physiological role.
- Protease-resistant PrPC isoforms accumulate in prion diseases, correlating with pathology.
- Prion diseases affect the brain, leading to severe neurological deficits.
Purpose of the Study:
- To elucidate the physiological role of PrPC.
- To investigate the involvement of PrPC in Purkinje cell survival.
- To determine the necessity of PrPC for prion propagation and disease development.
Main Methods:
- Generation and long-term observation of PrP gene knockout (PrP null) mice.
- Assessment of motor coordination and cerebellar Purkinje cell survival in aged PrP null mice.
- Experimental prion infection of PrP null mice to evaluate disease susceptibility.
Main Results:
- Aged PrP null mice exhibited impaired motor coordination and loss of cerebellar Purkinje cells.
- PrP null mice demonstrated resistance to prion infection.
- These findings indicate PrPC is required for Purkinje cell maintenance and prion pathogenesis.
Conclusions:
- PrPC plays a crucial role in the long-term survival of cerebellar Purkinje cells.
- PrPC is essential for the development and propagation of prion diseases.
- Targeting PrPC may offer a therapeutic strategy for prion-related disorders.