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Published in: Molecular Neurodegeneration 1/2009

Open Access 01-12-2009 | Research article

Emerging role of LRRK2 in human neural progenitor cell cycle progression, survival and differentiation

Authors: Javorina Milosevic, Sigrid C Schwarz, Vera Ogunlade, Anne K Meyer, Alexander Storch, Johannes Schwarz

Published in: Molecular Neurodegeneration | Issue 1/2009

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Abstract

Despite a comprehensive mapping of the Parkinson's disease (PD)-related mRNA and protein leucine-rich repeat kinase 2 (LRRK2) in the mammalian brain, its physiological function in healthy individuals remains enigmatic. Based on its structural features and kinase properties, LRRK2 may interact with other proteins involved in signalling pathways. Here, we show a widespread LRRK2 mRNA and/or protein expression in expanded or differentiated human mesencephalic neural progenitor cells (hmNPCs) and in post-mortem substantia nigra PD patients. Using small interfering RNA duplexes targeting LRRK2 in hmNPCs following their differentiation into glia and neurons, we observed a reduced number of dopaminergic neurons due to apoptosis in LRRK2 knockdown samples. LRRK2-deficient hmNPCs exhibited elevated cell cycle- and cell death-related markers. In conclusion, a reduction of LRRK2 expression in hmNPCs severely impaired dopaminergic differentiation and/or survival of dopaminergic neurons most likely via preserving or reactivating the cell cycle.
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Metadata
Title
Emerging role of LRRK2 in human neural progenitor cell cycle progression, survival and differentiation
Authors
Javorina Milosevic
Sigrid C Schwarz
Vera Ogunlade
Anne K Meyer
Alexander Storch
Johannes Schwarz
Publication date
01-12-2009
Publisher
BioMed Central
Published in
Molecular Neurodegeneration / Issue 1/2009
Electronic ISSN: 1750-1326
DOI
https://doi.org/10.1186/1750-1326-4-25

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Molecular Neurodegeneration 1/2009 Go to the issue