[The Propagation Hypothesis of Prion-like Protein Agregates in Neurodegenerative Diseases].
[The Propagation Hypothesis of Prion-like Protein Agregates in Neurodegenerative Diseases].
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Original abstract
The most common neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis, are known to be protein-misfolding diseases, and characterized by the presence of disease-specific protein aggregates in neuronal and glial cells. Recently, the propagation hypothesis of prion-like protein inclusions in neurodegenerative diseases has been proposed. Many studies have shown that aggregation-prone proteins such as tau, alpha-synuclein and TDP-43 can form aggregates in a seed-dependent and self-templating prion-like manner, and these aggregates can be transferred intercellularly to neighboring cells and seeded for further aggregation. Propagation of aggregated proteins in these diseases may therefore occur through mechanisms similar to those that underlie prion pathogenesis. If this hypothesis is verified in vivo, it will suggest new therapeutic strategies to block the propagation of aggregated proteins throughout the brain.