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Formation of Toxic Oligomeric α-Synuclein Species in Living Cells
Open accessAbstract
BACKGROUND: Misfolding, oligomerization, and fibrillization of alpha-synuclein are thought to be central events in the onset and progression of Parkinson's disease (PD) and related disorders. Although fibrillar alpha-synuclein is a major component of Lewy bodies (LBs), recent data implicate prefibrillar, oligomeric intermediates as the toxic species. However, to date, oligomeric species have not been identified in living cells. METHODOLOGY/PRINCIPAL FINDINGS: Here we used bimolecular fluorescence complementation (BiFC) to directly visualize alpha-synuclein oligomerization in living cells, allowing us to study the initial events leading to alpha-synuclein oligomerization, the precursor to aggregate formation. This novel assay provides us with a tool with which to investigate how manipulations affecting alpha-synuclein aggregation affect the process over time. Stabilization of alpha-synuclein oligomers via BiFC results in increased cytotoxicity, which can be rescued by Hsp70 in a process that reduces the formation of alpha-synuclein oligomers. Introduction of PD-associated mutations in alpha-synuclein did not affect oligomer formation but the biochemical properties of the mutant alpha-synuclein oligomers differ from those of wild type alpha-synuclein. CONCLUSIONS/SIGNIFICANCE: This novel application of the BiFC assay to the study of the molecular basis of neurodegenerative disorders enabled the direct visualization of alpha-synuclein oligomeric species in living cells and its modulation by Hsp70, constituting a novel important tool in the search for therapeutics for synucleinopathies.
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Cited by
Direct evidence of Parkinson pathology spread from the gastrointestinal tract to the brain in rats
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Exosomal cell-to-cell transmission of alpha synuclein oligomers
Danzer, K. M., Kranich, L. R., Ruf, W. P., Cagsal-Getkin, O., Winslow, A. R., Zhu, L., Vanderburg, C. R., & McLean, P. J. (2012) · Molecular Neurodegeneration · doi:10.1186/1750-1326-7-42 · Cited by 853
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Self-citationCryo-EM structure of alpha-synuclein fibrils
Guerrero-Ferreira, R., Taylor, N. M., Mona, D., Ringler, P., Lauer, M. E., Riek, R., Britschgi, M., & Stahlberg, H. (2018) · eLife · doi:10.7554/elife.36402 · Cited by 600
Physicochemical Properties of Cells and Their Effects on Intrinsically Disordered Proteins (IDPs)
Theillet, F.-X., Binolfi, A., Frembgen-Kesner, T., Hingorani, K., Sarkar, M., Kyne, C., Li, C., Crowley, P. B., Gierasch, L., Pielak, G. J., et al. (2014) · Chemical Reviews · doi:10.1021/cr400695p · Cited by 503
Metadata
- Authors
- Outeiro, T. F., Putcha, P., Tetzlaff, J. E., Spoelgen, R., Koker, M., Carvalho, F., Hyman, B. T., & McLean, P. J.
- Venue
- PLoS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2008-04-02
- Volume
- 3
- Issue
- 4
- Pages
- e1867
- ISSN
- 1932-6203 (ISSN-L)
- OpenAlex
- W2034887565
- Cited by
- 401
- References
- 6
- FWCI
- 12.77
- Type
- journal article
- Language
- en
- Update notices
- correction (2008-05-16)
- Open access
- gold
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