Cited by 166Parkinson's Disease Mechanisms and TreatmentsNuclear Receptors and SignalingNeuroinflammation and Neurodegeneration Mechanisms

Aldehyde dehydrogenase 1 defines and protects a nigrostriatal dopaminergic neuron subpopulation

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Liu, Guoxiang, Yu, Jia, Ding, Jinhui, Xie, Chengsong, Sun, Lixin, Rudenko, Iakov, Zheng, Wang, Sastry, Namratha +4 more·2014·Journal of Clinical Investigation

Abstract

Subpopulations of dopaminergic (DA) neurons within the substantia nigra pars compacta (SNpc) display a differential vulnerability to loss in Parkinson's disease (PD); however, it is not clear why these subsets are preferentially selected in PD-associated neurodegeneration. In rodent SNpc, DA neurons can be divided into two subpopulations based on the expression of aldehyde dehydrogenase 1 (ALDH1A1). Here, we have shown that, in α-synuclein transgenic mice, a murine model of PD-related disease, DA neurodegeneration occurs mainly in a dorsomedial ALDH1A1-negative subpopulation that is also prone to cytotoxic aggregation of α-synuclein. Notably, the topographic ALDH1A1 pattern observed in α-synuclein transgenic mice was conserved in human SNpc. Postmortem evaluation of brains of patients with PD revealed a severe reduction of ALDH1A1 expression and neurodegeneration in the ventral ALDH1A1-positive DA subpopulations. ALDH1A1 expression was also suppressed in α-synuclein transgenic mice. Deletion of Aldh1a1 exacerbated α-synuclein-mediated DA neurodegeneration and α-synuclein aggregation, whereas Aldh1a1-null and control DA neurons were comparably susceptible to 1-methyl-4-phenylpyridinium-, glutamate-, or camptothecin-induced cell death. ALDH1A1 overexpression appeared to preferentially protect against α-synuclein-mediated DA neurodegeneration but did not rescue α-synuclein-induced loss of cortical neurons. Together, our findings suggest that ALDH1A1 protects subpopulations of SNpc DA neurons by preventing the accumulation of dopamine aldehyde intermediates and formation of cytotoxic α-synuclein oligomers.

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  1. Spillantini MG, Schmidt ML, Lee VM, Trojanowski JQ, Jakes R, Goedert M. α-Synuclein in Lewy bod- ies. Nature. 1997;388(6645):839-840.

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Authors
Liu, G., Yu, J., Ding, J., Xie, C., Sun, L., Rudenko, I., Zheng, W., Sastry, N., Luo, J., Rudow, G., Troncoso, J. C., & Cai, H.
Affiliations
  • National Institutes of Health (US)
  • Beijing Normal University (CN)
  • Johns Hopkins University (US)
Corresponding author
Cai, Huaibin
Venue
Journal of Clinical Investigation
Published
2014-05-27
Volume
124
Issue
7
Pages
3032-3046
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2070635751
Cited by
166
References
48
Citations by year
2026: 24 · 2025: 13 · 2024: 19 · 2023: 9 · 2022: 16 · 2021: 22 · 2020: 13 · 2019: 13 · 2018: 4 · 2017: 13 · 2016: 8 · 2015: 7 · 2014: 5
FWCI
7.17
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Johns Hopkins University
  • National Institutes of Health
  • National Institute on Aging (AG000945-03, K07AG000959, AG000959-07, P50AG005146, Z01AG000945, Z01AG000959, P50AG05146)
  • National Institute of Neurological Disorders and Stroke (P50NS038377)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
ALDH1, ALDH1A1, dopaminergic neurons, substantia nigra pars compacta, Parkinson's disease, alpha-synuclein, neurodegeneration, neuronal subpopulations, alpha-synuclein aggregation, neuroprotection, MPP+, glutamate excitotoxicity, camptothecin
MeSH terms
Aldehyde Dehydrogenase 1 Family, Aldehyde Dehydrogenase, Animals, Disease Models, Animal, Female, Humans, Male, Mice, Mutant Strains, Mice, Transgenic, Nerve Degeneration, Parkinson Disease, Recombinant Proteins, Substantia Nigra, Mice, Knockout, Mutation, Missense, Mutant Proteins, Retinal Dehydrogenase, Mice, alpha-Synuclein, Protein Multimerization, Dopaminergic Neurons

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