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Familial Parkinson’s point mutation abolishes multiple system atrophy prion replication
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Journal Article
Familial Parkinson’s point mutation abolishes multiple system atrophy prion replication
2018
Overview
In the neurodegenerative disease multiple system atrophy (MSA), α-synuclein misfolds into a self-templating conformation to become a prion. To compare the biological activity of α-synuclein prions in MSA and Parkinson’s disease (PD), we developed nine α-synuclein−YFP cell lines expressing point mutations responsible for inherited PD. MSA prions robustly infected wild-type, A30P, and A53T α-synuclein–YFP cells, but they were unable to replicate in cells expressing the E46K mutation. Coexpression of the A53T and E46K mutations was unable to rescue MSA prion infection in vitro, establishing that MSA α-synuclein prions are conformationally distinct from the misfolded α-synuclein in PD patients. This observation may have profound implications for developing treatments for neurodegenerative diseases.
Publisher
National Academy of Sciences
Subject
