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Monoubiquitylation of α-Synuclein by Seven in Absentia Homolog (SIAH) Promotes Its Aggregation in Dopaminergic Cells
Open accessAbstract
alpha-Synuclein plays a major role in Parkinson disease. Unraveling the mechanisms of alpha-synuclein aggregation is essential to understand the formation of Lewy bodies and their involvement in dopaminergic cell death. alpha-Synuclein is ubiquitylated in Lewy bodies, but the role of alpha-synuclein ubiquitylation has been mysterious. We now report that the ubiquitin-protein isopeptide ligase seven in absentia homolog (SIAH) directly interacts with and monoubiquitylates alpha-synuclein and promotes its aggregation in vitro and in vivo, which is toxic to cells. Mass spectrometry analysis demonstrates that SIAH monoubiquitylates alpha-synuclein at lysines 12, 21, and 23, which were previously shown to be ubiquitylated in Lewy bodies. SIAH ubiquitylates lysines 10, 34, 43, and 96 as well. Suppression of SIAH expression by short hairpin RNA to SIAH-1 and SIAH-2 abolished alpha-synuclein monoubiquitylation in dopaminergic cells, indicating that endogenous SIAH ubiquitylates alpha-synuclein. Moreover, SIAH co-immunoprecipitated with alpha-synuclein from brain extracts. Inhibition of proteasomal, lysosomal, and autophagic pathways, as well as overexpression of a ubiquitin mutant less prone to deubiquitylation, G76A, increased monoubiquitylation of alpha-synuclein by SIAH. Monoubiquitylation increased the aggregation of alpha-synuclein in vitro. At the electron microscopy level, monoubiquitylated alpha-synuclein promoted the formation of massive amounts of amorphous aggregates. Monoubiquitylation also increased alpha-synuclein aggregation in vivo as observed by increased formation of alpha-synuclein inclusion bodies within dopaminergic cells. These inclusions are toxic to cells, and their formation was prevented when endogenous SIAH expression was suppressed. Our data suggest that monoubiquitylation represents a possible trigger event for alpha-synuclein aggregation and Lewy body formation.
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AlaSOPro mutation in the gene encoding α-synuclein in Parkinson's disease
Krüger, R., Kuhn, W., Müller, T., Woitalla, D., Graeber, M., Kösel, S., Przuntek, H., Epplen, J. T., Schols, L., & Riess, O. (1998) · Nature Genetics · doi:10.1038/ng0298-106 · Cited by 3,836
α-synuclein locus duplication as a cause of familial Parkinson's disease
Chartier-Harlin, M.-C., Kachergus, J., Roumier, C., Mouroux, V., Douay, X., Lincoln, S., Levecque, C., Larvor, L., Andrieux, J., Hulihan, M., et al. (2004) · The Lancet · doi:10.1016/s0140-6736(04)17103-1 · Cited by 2,029
Impaired Degradation of Mutant α-Synuclein by Chaperone-Mediated Autophagy
Cuervo, A. M., Stefanis, L., Fredenburg, R., Lansbury, P. T., & Sulzer, D. (2004) · Science · doi:10.1126/science.1101738 · Cited by 2,024
α-Synuclein Is Degraded by Both Autophagy and the Proteasome
Webb, J. L., Ravikumar, B., Atkins, J., Skepper, J. N., & Rubinsztein, D. C. (2003) · Journal of Biological Chemistry · doi:10.1074/jbc.m300227200 · Cited by 1,429
Chaperone Suppression of α-Synuclein Toxicity in a Drosophila Model for Parkinson's Disease
Auluck, P. K., Chan, H. Y. E., Trojanowski, J. Q., Lee, V. M.-Y., & Bonini, N. M. (2002) · Science · doi:10.1126/science.1067389 · Cited by 1,227
Giasson, B. I., Murray, I. V. J., Trojanowski, J. Q., & Lee, V. M.-Y. (2001) · Journal of Biological Chemistry · doi:10.1074/jbc.m008919200 · Cited by 1,080
Shimura, H., Schlossmacher, M. G., Hattori, N., Frosch, M. P., Trockenbacher, A., Schneider, R., Mizuno, Y., Kosik, K. S., & Selkoe, D. J. (2001) · Science · doi:10.1126/science.1060627 · Cited by 1,053
Chung, K. K. K., Zhang, Y., Lim, K. L., Tanaka, Y., Huang, H., Gao, J., Ross, C. A., Dawson, V. L., & Dawson, T. M. (2001) · Nature Medicine · doi:10.1038/nm1001-1144 · Cited by 750
Proteasomal function is impaired in substantia nigra in Parkinson’s disease
McNaught, K. S. P., & Jenner, P. (2001) · Neuroscience Letters · doi:10.1016/s0304-3940(00)01701-8 · Cited by 653
Phosphorylated α-Synuclein Is Ubiquitinated in α-Synucleinopathy Lesions
Hasegawa, M., Fujiwara, H., Nonaka, T., Wakabayashi, K., Takahashi, H., Lee, V. M.-Y., Trojanowski, J. Q., Mann, D., & Iwatsubo, T. (2002) · Journal of Biological Chemistry · doi:10.1074/jbc.m208046200 · Cited by 428
Cited by
-Synuclein in Parkinson's Disease
Stefanis, L. (2012) · Cold Spring Harbor Perspectives in Medicine · doi:10.1101/cshperspect.a009399 · Cited by 1,446
α-Synuclein misfolding and Parkinson's disease
Breydo, L., Wu, J. W., & Uversky, V. N. (2012) · Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease · doi:10.1016/j.bbadis.2011.10.002 · Cited by 657
Cell Biology and Pathophysiology of α-Synuclein
Burré, J., Sharma, M., & Südhof, T. C. (2018) · Cold Spring Harbor Perspectives in Medicine · doi:10.1101/cshperspect.a024091 · Cited by 579
The Synaptic Function of α-Synuclein
Burré, J. (2015) · Journal of Parkinson's Disease · doi:10.3233/jpd-150642 · Cited by 573
Zhong, Q., Xiao, X., Qiu, Y., Xu, Z., Chen, C., Chong, B., Zhao, X., Hai, S., Li, S., An, Z., et al. (2023) · MedComm · doi:10.1002/mco2.261 · Cited by 442
Metadata
- Authors
- Rott, R., Szargel, R., Haskin, J., Shani, V., Shainskaya, A., Manov, I., Liani, E., Avraham, E., & Engelender, S.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 2008-02
- Volume
- 283
- Issue
- 6
- Pages
- 3316-3328
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W2016384173
- Cited by
- 174
- References
- 11
- FWCI
- 5.73
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Rott, R., Szargel, R., Haskin, J., Shani, V., Shainskaya, A., Manov, I., Liani, E., Avraham, E., & Engelender, S. (2008). Monoubiquitylation of α-Synuclein by Seven in Absentia Homolog (SIAH) Promotes Its Aggregation in Dopaminergic Cells. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m704809200
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