Decreased sirtuin deacetylase activity in LRRK2 G2019S iPSC-derived dopaminergic neurons
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Mitochondrial changes have long been implicated in the pathogenesis of Parkinson's disease (PD). The glycine to serine mutation (G2019S) in leucine-rich repeat kinase 2 (LRRK2) is the most common genetic cause for PD and has been shown to impair mitochondrial function and morphology in multiple model systems. We analyzed mitochondrial function in LRRK2 G2019S induced pluripotent stem cell (iPSC)-derived neurons to determine whether the G2019S mutation elicits similar mitochondrial deficits among central and peripheral nervous system neuron subtypes. LRRK2 G2019S iPSC-derived dopaminergic neuron cultures displayed unique abnormalities in mitochondrial distribution and trafficking, which corresponded to reduced sirtuin deacetylase activity and nicotinamide adenine dinucleotide levels despite increased sirtuin levels. These data indicate that mitochondrial deficits in the context of LRRK2 G2019S are not a global phenomenon and point to distinct sirtuin and bioenergetic deficiencies intrinsic to dopaminergic neurons, which may underlie dopaminergic neuron loss in PD.
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Neurons expressing the LRRK2 G2019S mutation exhibit mitochondrial dysfunction and a 30% reduction of NAD+ levels.
“As evidenced, neurons expressing the LRRK2 G2019S mutation exhibit mitochondrial dysfunction and a 30% reduction of NAD+ levels.”
From NAD+ in Brain Aging and Neurodegenerative Disorders (2019) · cites this paper as Schwab et al., 2017
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- Authors
- Schwab, A. J., Sison, S. L., Meade, M. R., Broniowska, K. A., Corbett, J. A., & Ebert, A. D.
- Affiliations
- Medical College of Wisconsin (US)
- Corresponding author
- Ebert, Allison D.
- Venue
- Stem Cell Reports
- Publisher
- Elsevier BV
- Published
- 2017-12
- Volume
- 9
- Issue
- 6
- Pages
- 1839-1852
- ISSN
- 2213-6711 (ISSN-L)
- PMC
- PMC5785678
- OpenAlex
- W2767303889
- Cited by
- 80
- References
- 74
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 7 · 2023: 7 · 2022: 17 · 2021: 12 · 2020: 11 · 2019: 10 · 2018: 13
- FWCI
- 6.48
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Stem Cell Reports (publishedVersion, cc-by-nc-nd)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Neuroscience Research Center
- Advancing a Healthier Wisconsin
- Fraternal Order of Eagles
- NIH (DK052194, AI044458, P30DK020595, 2T35AG29793)
- Topics
- Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
- Keywords
- Parkinson's disease, LRRK2 G2019S mutation, dopaminergic neurons, iPSC-derived neurons, mitochondrial function, mitochondrial distribution, mitochondrial trafficking, NAD levels, bioenergetics, dopaminergic neuron loss, mitochondrial dysfunction
- MeSH terms
- Leucine-Rich Repeat Serine-Threonine Protein Kinase-2, Animals, Disease Models, Animal, Humans, Mitochondria, Mutation, Parkinson Disease, Neurites, Group III Histone Deacetylases, Induced Pluripotent Stem Cells, Dopaminergic Neurons
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