PI31 expression prevents neuronal degeneration in a mouse Parkinson Disease model
Steller, H.; Minis, A.
Show abstract
Age-related neurodegenerative diseases pose a major unmet health need since no effective treatment strategies are currently available. These disorders are defined by the accumulation of abnormal protein aggregates that impair synaptic function and cause progressive neuronal degeneration. Therefore, stimulating protein clearance mechanisms may be neuro-protective. The proteasome regulator PI31 promotes local protein degradation at synapses by mediating fast proteasome transport in neurites, and loss of PI31 function causes neuronal degeneration. Here we show that transgenic expression of PI31 in a mouse Parkinsons Disease model preserves neuronal function and greatly extends animal health and lifespan. These results indicate that targeting the PI31-pathway may have therapeutic value for treating neurodegenerative disorders.
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