| RRC ID |
64463
|
| 著者 |
Shimizu J, Kasai T, Yoshida H, Huynh AM, Nakao-Azuma Y, Shinomoto M, Tokuda T, Mizuno T, Yamaguchi M.
|
| タイトル |
Novel Drosophila model for parkinsonism by targeting phosphoglycerate kinase.
|
| ジャーナル |
Neurochem Int
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| Abstract |
Patients with Parkinson's disease (PD) show a common progressive neurodegenerative movement disorder characterized by rigidity, tremors, postural instability, and bradykinesia due to the loss of dopaminergic neurons in the substantia nigra, and is often accompanied by several non-motor symptoms, called parkinsonism. Several lines of recent evidence support the hypothesis that mutations in the gene encoding phosphoglycerate kinase (PGK) play an important role in the PD mechanism. PGK is a key enzyme in the glycolytic pathway that catalyzes the reaction from 1,3-diphosphoglycerate to 3-phosphoglycerate. We herein established a parkinsonism model targeting Drosophila Pgk. Dopaminergic (DA) neuron-specific Pgk knockdown lead to locomotive defects in both young and aged adult flies and was accompanied by progressive DA neuron loss with aging. Pgk knockdown in DA neurons decreased dopamine levels in the central nervous system (CNS) of both young and aged adult flies. These phenotypes are similar to the defects observed in human PD patients, suggesting that the Pgk knockdown flies established herein are a promising model for parkinsonism. Furthermore, pan-neuron-specific Pgk knockdown induced low ATP levels and the accumulation of reactive oxygen species (ROS) in the CNS of third instar larvae. Collectively, these results indicate that a failure in the energy production system of Pgk knockdown flies causes locomotive defects accompanied by neuronal dysfunction and degeneration in DA neurons.
|
| 巻・号 |
139
|
| ページ |
104816
|
| 公開日 |
2020-10-1
|
| DOI |
10.1016/j.neuint.2020.104816
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| PII |
S0197-0186(20)30207-2
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| PMID |
32758590
|
| MeSH |
Amino Acid Sequence
Animals
Animals, Genetically Modified
Dopaminergic Neurons / enzymology*
Dopaminergic Neurons / pathology
Drosophila
Drosophila Proteins / antagonists & inhibitors
Drosophila Proteins / deficiency
Drosophila Proteins / genetics
Humans
Parkinsonian Disorders / enzymology*
Parkinsonian Disorders / genetics*
Parkinsonian Disorders / pathology
Phosphoglycerate Kinase / antagonists & inhibitors*
Phosphoglycerate Kinase / deficiency
Phosphoglycerate Kinase / genetics*
|
| IF |
3.881
|
| リソース情報 |
| ショウジョウバエ |
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