Cited by 144Parkinson's Disease Mechanisms and TreatmentsAutophagy in Disease and TherapyNuclear Receptors and Signaling

Development and Characterization of a New Parkinson's Disease Model Resulting from Impaired Autophagy

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Ahmed, Ishrat, Liang, Yideng, Schools, Sabitha, Dawson, Valina L., Dawson, Ted M., Savitt, Joseph M.·2012·The Journal of Neuroscience

Abstract

Parkinson's disease (PD) is a progressive neurodegenerative disease caused by the interaction of genetic and environmental factors. However, the etiology of PD remains largely unknown. Macroautophagy is known to play an essential role in the degradation of abnormal proteins and organelles. Furthermore, the loss of autophagy-related (Atg) genes results in neurodegeneration and abnormal protein accumulation. Since these are also pathologic features of Parkinson's disease, the conditional impairment of autophagy may lead to improved animal models for the study of PD. Using transgenic mice expressing Cre recombinase under the control of either the dopamine transporter or the engrailed-1 promoters, we generated mice with the conditional deletion of Atg7 in the dopamine neurons of the substantia nigra pars compacta, other regions of the midbrain, and also the hindbrain. This conditional impairment of autophagy results in the age-related loss of dopaminergic neurons and corresponding loss of striatal dopamine, the accumulation of low-molecular-weight α-synuclein, and the presence of ubiquitinated protein aggregates, recapitulating many of the pathologic features of PD. These conditional knock-out animals provide insight into the process of autophagy in Parkinson's disease pathology.

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Crossref · 10.1523/jneurosci.0209-12.2012

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  • Several lines of evidence indicate a role for autophagy in the regulation of synuclein homeostasis, suggesting that dysfunctional autophagic clearance may contribute to the development of synuclein inclusions.

    “Several lines of evidence indicate a role for autophagy in the regulation of synuclein homeostasis5,6,15, suggesting that dysfunctional autophagic clearance may contribute to the development of synuclein inclusions.”

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Authors
Ahmed, I., Liang, Y., Schools, S., Dawson, V. L., Dawson, T. M., & Savitt, J. M.
Affiliations
Johns Hopkins University (US)
Venue
The Journal of Neuroscience
Published
2012-11-14
Volume
32
Issue
46
Pages
16503-16509
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2026969412
Cited by
144
References
23
Citations by year
2026: 1 · 2025: 6 · 2024: 5 · 2023: 6 · 2022: 10 · 2021: 19 · 2020: 10 · 2019: 13 · 2018: 10 · 2017: 8 · 2016: 16 · 2015: 12 · 2014: 16 · 2013: 12
FWCI
8.36
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
Funders
  • Parkinson's Disease Foundation
  • Adrienne Helis Malvin Medical Research Foundation
  • JPB Foundation
  • Johns Hopkins University
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (P50NS38377, K08NS052624, P50NS038377)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
Keywords
Parkinson's disease, autophagy, ATG7, conditional knockout mice, dopaminergic neurons, substantia nigra pars compacta, alpha-synuclein aggregation, ubiquitinated protein aggregates, striatal dopamine, neurodegeneration, transgenic mice
MeSH terms
Autophagy-Related Protein 7, Dynactin Complex, Animals, Autophagy, Cell Count, Chromatography, High Pressure Liquid, Disease Models, Animal, Dopamine, Electrochemistry, Immunohistochemistry, Microtubule-Associated Proteins, Parkinson Disease, Blotting, Western, Neostriatum, Gene Deletion, Mice, Knockout, Neurotransmitter Agents, Ubiquitin, Polyubiquitin, Mice, alpha-Synuclein, Dopaminergic Neurons

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