Journal
LABORATORY INVESTIGATION
Volume 99, Issue 7, Pages 971-981Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41374-019-0195-z
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Funding
- NIA NIH HHS [P30 AG010124, U19 AG062418] Funding Source: Medline
- NINDS NIH HHS [R56 NS081033, R01 NS081033] Funding Source: Medline
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Cell-to-cell transmission of proteopathic alpha-synuclein (alpha-syn) seeds is increasingly thought to underlie the progression of neurodegenerative diseases including Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, and related synucleinopathies. As such, it is important to understand the chemical and biological relationships between cells and pathological aggregates of alpha-syn. This brief review updates our understanding of the templated spread of alpha-syn pathology in neurodegenerative disease from the perspective of proteopathic alpha-syn seeds, including how these seeds are processed by cells as well as their effects on cellular function. Recent advances in understanding the conformations of alpha-syn seeds are highlighted, and the possible structural basis for the observed heterogeneity of synucleinopathies is discussed. Finally, we propose the possibility that some known risk factors for synucleinopathies may in fact potentiate the cell-to-cell transmission of alpha-syn pathology via imbalances in interrelated cell biological processes.
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