Analysis of molecular mechanisms behind the prion hypothesis in synucleinopathy
Project/Area Number |
23591228
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Neurology
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Research Institution | Tohoku University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
TAKEDA Atsushi 東北大学, 大学院医学系研究科, 准教授 (70261534)
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Co-Investigator(Renkei-kenkyūsha) |
NAGAI Yoshitaka 独立行政法人国立精神・神経医療研究センター, 神経研究所, 室長 (60335354)
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Project Period (FY) |
2011 – 2013
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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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Keywords | パーキンソン病 / 異常凝集タンパク / αシヌクレイン / プリオン仮説 / エキソソーム / 小胞輸送 / ダイナミン / エンドソーム / α-シヌクレイン / セルトラリン / 多系統萎縮症 / エンドサイトーシス / 神経細胞 / オリゴデンドログリア / 細胞間伝播 |
Research Abstract |
The intracellular deposition of misfolded proteins is a common neuropathological hallmark of most neurodegenerative disorders. Increasing evidence suggests that these pathogenic proteins may spread to neighboring cells and induce the propagation of neurodegeneration. In this study, we showed that unlike prion protein, extracellular alpha-synuclein (aS), a major constituent of intraneuronal inclusions in Parkinson's disease, was mainly recovered in the supernatant fraction rather than in exosome-containing pellets from the neuronal culture medium and cerebrospinal fluid. In addition, we identified that the extracellular secretion of aS was secreted via Rab11-mediated recycling pathway (Hasegawa T, et al., PloS One 2011). Furthermore, we demonstrated that aSwas taken up by neuronal and oligodendroglial cells bu dynamic-dependent endocytosis (Konno M, et al., Mol Neurodegener 2012).
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Report
(4 results)
Research Products
(47 results)
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[Journal Article] Hypometabolism in the supplementary and anterior cingulate cortices is related to dysphagia in Parkinson's disease: a cross-sectional and 3-year longitudinal cohort study2013
Author(s)
Akio Kikuchi, Toru Baba, Takafumi Hasegawa, Michiko Kobayashi, Naoto Sugeno, Masatoshi Konno, Emiko Miura, Yoshiyuki Hosokai, Toshiyuki Ishioka, Yoshiyuki Nishio, Kazumi Hirayama, Kyoko Suzuki, Masashi Aoki, ShokiTakahashi, Hiroshi Fukuda, Yasuto Itoyama, Etsuro Mori, Atsushi Takeda
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Journal Title
BMJ Open
Volume: 3
Issue: 3
Pages: e002249-e002249
DOI
Related Report
Peer Reviewed
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[Journal Article] Suppression of dynamin GTPase decreases alpha-synuclein uptake by neuronal and oligodendroglial cells: a potent therapeutic target for synucleinopathy.2012
Author(s)
Konno M, Hasegawa T, Baba T, Miura E, Sugeno N, Kikuchi A, Fiesel FC, Sasaki T, Aoki M, Itoyama Y, Takeda A.
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Journal Title
Mol Neurodegener
Volume: 7
Issue: 1
Pages: 38-38
DOI
Related Report
Peer Reviewed
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[Journal Article] Severe olfactory dysfunction is a prodromal symptom of dementia associated with Parkinson's disease : a 3 year longitudinal study2012
Author(s)
Baba T, Kikuchi A, Hirayama K, Nishio Y, Hosokai Y, Kanno S, Hasegawa T, Sugeno N, Konno M, Suzuki K, Takahashi S, Fukuda H, Aoki M, Itoyama Y, Mori E, Takeda A
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Journal Title
Brain
Volume: 135
Pages: 161-9
Related Report
Peer Reviewed
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[Journal Article] Severe olfactory dysfunction is a prodromal symptom of dementia associated with Parkinson's disease : a 3-year longitudinal study2012
Author(s)
BabaT, Kikuchi A, Hirayama K, Nishio Y, Hosokai Y, Kanno S, Hasegawa T, Sugeno N, Konno M, Suzuki K, et al
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Journal Title
Brain
Volume: 135
Issue: 1
Pages: 162-169
DOI
Related Report
Peer Reviewed
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[Journal Article] The AAA-A TPase VPS4 Regulates Extracellular Secretion and Lysosomal Targeting of alpha-Synuclein2011
Author(s)
Hasegawa T, Konno M, Baba T, Sugeno N, Kikuchi A, Kobayashi M, Miura E, Tanaka N, Tamai K, Furukawa K, Arai H, Mori F, Wakabayashi K, Aoki M, Itoyama Y, Takeda A
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Journal Title
PLoS One
Volume: 6
Issue: 12
Pages: 1-14
DOI
Related Report
Peer Reviewed
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[Presentation] RNAi-mediated silencing of VPS35 exacerbates phenotypic and locomotor abnormalities in alpha-synuclein transgenic drosophila2013
Author(s)
Hasegawa T, Konno M, Miura E, Sugeno N, Nagai Y, Fujikake N, Suzuki M, Kikuchi A, Aoki M, Takeda A
Organizer
17th International Congress of Parkinson's Disease and Related Disorders
Place of Presentation
シドニー,オーストラリア
Year and Date
2013-06-17
Related Report
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[Presentation] RNAi-mediated knockdown of VPS35 impairsα-synuclein degradation by inhibiting the maturation of cathepsin D2013
Author(s)
Hasegawa T, Konno M, Miura E, Sugeno N, Nagai Y, Fujikake N, Suzuki M, Kikuchi A, Aoki M, Takeda A
Organizer
The 11th International Conference on Alzheimer's & Parkinson's Diseases (AD/PD 2013)
Place of Presentation
フローレンス,イタリア
Year and Date
2013-03-07
Related Report
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[Presentation] RNAi-mediated knockdown of VPS35 impairs α-synuclein degradation by inhibiting the maturation of cathepsin D2013
Author(s)
Hasegawa T, Konno M, Miura M, Suzuki M, Sugeno N, Nagai Y, Fujikake N, Kikuchi A, Aoki M, Takeda A.
Organizer
XX World Congress on Parkinson's Disease and Related Disorders
Place of Presentation
Geneva, Switzerland
Related Report
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[Presentation] RNAi-mediated silencing of VPS35 exacerbates phenotypic and locomotor abnormalities in α-synuclein transgenic Drosophila.2013
Author(s)
Hasegawa T, Konno M, Miura E, Sugeno N, Nagai Y, Fujikake N, Suzuki M, Kikuchi A, Aoki M, Takeda A.
Organizer
The MDS 17th International Congress of Parkinson's Disease and Movement Disorders
Place of Presentation
Sydney, Australia
Related Report
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