Exogenous α-synuclein fibrils induce Lewy body pathology leading to synaptic dysfunction and neuron death.
Exogenous α-synuclein fibrils induce Lewy body pathology leading to synaptic dysfunction and neuron death.
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DOI:
10.1016/j.neuron.2011.08.033
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发表时间:
2011-10-06
期刊:
影响因子:
16.2
通讯作者:
Lee VM
中科院分区:
文献类型:
--
作者:
Volpicelli-Daley LA;Luk KC;Patel TP;Tanik SA;Riddle DM;Stieber A;Meaney DF;Trojanowski JQ;Lee VM
Inclusions comprised of α-synuclein (α-syn), i.e. Lewy bodies (LBs) and Lewy neurites (LNs), define synucleinopathies including Parkinson’s Disease (PD) and dementia with Lewy Bodies (DLB). Here, we demonstrate that pre-formed fibrils generated from full length and truncated recombinant α-syn enter primary neurons, likely by adsorptive-mediated endocytosis and promote recruitment of soluble endogenous α-syn into insoluble PD-like LBs and LNs. Remarkably, endogenous α-syn was sufficient for formation of these aggregates, and overexpression of wild type or mutant α-syn was not required. LN-like pathology first developed in axons and propagated to form LB-like inclusions in perikarya. Accumulation of pathologic α-syn led to selective decreases in synaptic proteins, progressive impairments in neuronal excitability and connectivity, and eventually, neuron death. Thus, our data contribute important insights into the etiology and pathogenesis of PD-like α-syn inclusions, their impact on neuronal functions, and provide a model for discovering therapeutics targeting pathologic α-syn- mediated neurodegeneration.
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影响因子:
4.8
作者:
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通讯作者:
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DOI:
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发表时间:
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影响因子:
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DOI:
10.1073/pnas.1005005107
发表时间:
2010-11-09
影响因子:
11.1
作者:
Greten-Harrison, Becket;Polydoro, Manuela;Chandra, Sreeganga S.
通讯作者:
Chandra, Sreeganga S.