2012 Fiscal Year Final Research Report
Inhibiting neuronal alpha-synuclein accumulation caused by oli godendrocytic inclusions
| Project/Area Number |
22500326
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nerve anatomy/Neuropathology
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| Research Institution | National Center for Geriatrics and Gerontology |
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Principal Investigator |
YAZAWA Ikuru 独立行政法人国立長寿医療研究センター, バイオリソース研究室, 室長 (20312217)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 脳神経疾患 / 病理学 / 神経科学 / オリゴデンドロサイト / 神経変性 |
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| Research Abstract |
Multiple system atrophy is a neurodegenerative disease caused by α-synuclein accumulation in oligodendrocytes and neurons. We generated a transgenic mouse model in which human α-synuclein was overexpressed in oligodendrocytes. Our previous studies have revealed that oligodendrocytic α-synuclein inclusions induced neuronal α-synuclein accumulation, resulting in progressive neuronal degeneration in mice. We also demonstrated that an insoluble complex of a-synuclein and ss-III tubulin in microtubules progressively accumulated in neurons. α-Synuclein accumulation is increased in the presynaptic terminals of transgenic mice neurons and may reduce neurotransmitter release. In the present study, we investigated the effects of neuronal α-synuclein accumulation on synaptic function in transgenic mice. Using whole-cell patch-clamp recording, we demonstrated synaptic dysfunction in transgenic mice, and a microtubule depolymerizing agent restored the normal function in transgenic mice.
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