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Polo-like Kinase 2 (PLK2) Phosphorylates Alpha-synuclein at Serine 129 in Central Nervous System

Abstract

Several neurological diseases, including Parkinson disease and dementia with Lewy bodies, are characterized by the accumulation of alpha-synuclein phosphorylated at Ser-129 (p-Ser-129). The kinase or kinases responsible for this phosphorylation have been the subject of intense investigation. Here we submit evidence that polo-like kinase 2 (PLK2, also known as serum-inducible kinase or SNK) is a principle contributor to alpha-synuclein phosphorylation at Ser-129 in neurons. PLK2 directly phosphorylates alpha-synuclein at Ser-129 in an in vitro biochemical assay. Inhibitors of PLK kinases inhibited alpha-synuclein phosphorylation both in primary cortical cell cultures and in mouse brain in vivo. Finally, specific knockdown of PLK2 expression by transduction with short hairpin RNA constructs or by knock-out of the plk2 gene reduced p-Ser-129 levels. These results indicate that PLK2 plays a critical role in alpha-synuclein phosphorylation in central nervous system.

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References
1.
Simmons D, Neel B, Stevens R, Evett G, Erikson R . Identification of an early-growth-response gene encoding a novel putative protein kinase. Mol Cell Biol. 1992; 12(9):4164-9. PMC: 360319. DOI: 10.1128/mcb.12.9.4164-4169.1992. View

2.
Kahle P, Neumann M, Ozmen L, Muller V, Jacobsen H, Spooren W . Hyperphosphorylation and insolubility of alpha-synuclein in transgenic mouse oligodendrocytes. EMBO Rep. 2002; 3(6):583-8. PMC: 1084143. DOI: 10.1093/embo-reports/kvf109. View

3.
Chen L, Feany M . Alpha-synuclein phosphorylation controls neurotoxicity and inclusion formation in a Drosophila model of Parkinson disease. Nat Neurosci. 2005; 8(5):657-63. DOI: 10.1038/nn1443. View

4.
Spillantini M, Crowther R, Jakes R, Hasegawa M, Goedert M . alpha-Synuclein in filamentous inclusions of Lewy bodies from Parkinson's disease and dementia with lewy bodies. Proc Natl Acad Sci U S A. 1998; 95(11):6469-73. PMC: 27806. DOI: 10.1073/pnas.95.11.6469. View

5.
Spillantini M, Schmidt M, Lee V, Trojanowski J, Jakes R, Goedert M . Alpha-synuclein in Lewy bodies. Nature. 1997; 388(6645):839-40. DOI: 10.1038/42166. View