Parkinson's disease (PD) and multiple system atrophy (MSA) are neurodegenerative diseases that are characterized by the intracellular accumulation of alpha-synuclein containing aggregates. Recent increasing evidence suggests that Parkinson's disease and MSA pathology spread throughout the nervous system in a spatiotemporal fashion, possibly by prion-like propagation of alpha-synuclein positive aggregates between synaptically connected areas. Concurrently, intracerebral injection of pathological alpha-synuclein into transgenic mice overexpressing human wild-type alpha-synuclein, or human alpha-synuclein with the familial A53T mutation, or into wild-type mice causes spreading of alpha-synuclein pathology in the CNS. Considering that wild-type mice naturally also express a threonine at codon 53 of alpha-synuclein, it has remained unclear whether human wild-type alpha-synuclein alone, in the absence of endogenously expressed mouse alpha-synuclein, would support a similar propagation of alpha-synuclein pathology in vivo.
Pubmed ID: 26612754 RIS Download
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