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Nigrostriatal α-synucleinopathy induced by viral vector-mediated overexpression of human α-synuclein: A new primate model of Parkinson's disease

Open access
Kirik, Deniz, Annett, Lucy E., Burger, Corinna, Muzyczka, Nicholas, Mandel, Ronald J., Björklund, Anders·2003·Proceedings of the National Academy of Sciences

Abstract

We used a high-titer recombinant adeno-associated virus (rAAV) vector to express WT or mutant human α-synuclein in the substantia nigra of adult marmosets. The α-synuclein protein was expressed in 90–95% of all nigral dopamine neurons and distributed by anterograde transport throughout their axonal and dendritic projections. The transduced neurons developed severe neuronal pathology, including α-synuclein-positive cytoplasmic inclusions and granular deposits; swollen, dystrophic, and fragmented neuritis; and shrunken and pyknotic, densely α-synuclein-positive perikarya. By 16 wk posttransduction, 30–60% of the tyrosine hydroxylase-positive neurons were lost, and the tyrosine hydroxylase-positive innervation of the caudate nucleus and putamen was reduced to a similar extent. The rAAV-α-synuclein-treated monkeys developed a type of motor impairment, i.e., head position bias, compatible with this magnitude of nigrostriatal damage. rAAV vector-mediated α-synuclein gene transfer provides a transgenic primate model of nigrostriatal α-synucleinopathy that is of particular interest because it develops slowly over time, like human Parkinson's disease (PD), and expresses neuropathological features (α-synuclein-positive inclusions and dystrophic neurites, in particular) that are similar to those seen in idiopathic PD. This model offers new opportunities for the study of pathogenetic mechanisms and exploration of new therapeutic targets of particular relevance to human PD.

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Metadata

Authors
Kirik, D., Annett, L. E., Burger, C., Muzyczka, N., Mandel, R. J., & Björklund, A.
Venue
Proceedings of the National Academy of Sciences
Published
2003-02-24
Volume
100
Issue
5
Pages
2884-2889
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2024041381
Cited by
403
References
7
FWCI
16.77
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Nigrostriatal α-synucleinopathy induced by viral vector-mediated overexpression of human α-synuclein: A new primate model of Parkinson's disease. https://app.cochat.ai/papers/10.1073/pnas.0536383100
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Kirik, D., Annett, L. E., Burger, C., Muzyczka, N., Mandel, R. J., & Björklund, A. (2003). Nigrostriatal α-synucleinopathy induced by viral vector-mediated overexpression of human α-synuclein: A new primate model of Parkinson's disease. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0536383100

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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