Ectosomes: a new mechanism for non-exosomal secretion of tau protein.
Ectosomes: a new mechanism for non-exosomal secretion of tau protein.
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DOI:
10.1371/journal.pone.0100760
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Colin M
中科院分区:
文献类型:
--
作者:
Dujardin S;Bégard S;Caillierez R;Lachaud C;Delattre L;Carrier S;Loyens A;Galas MC;Bousset L;Melki R;Aurégan G;Hantraye P;Brouillet E;Buée L;Colin M
Tau is a microtubule-associated protein that aggregates in neurodegenerative disorders known as tauopathies. Recently, studies have suggested that Tau may be secreted and play a role in neural network signalling. However, once deregulated, secreted Tau may also participate in the spreading of Tau pathology in hierarchical pathways of neurodegeneration. The mechanisms underlying neuron-to-neuron Tau transfer are still unknown; given the known role of extra-cellular vesicles in cell-to-cell communication, we wondered whether these vesicles could carry secreted Tau. We found, among vesicles, that Tau is predominately secreted in ectosomes, which are plasma membrane-originating vesicles, and when it accumulates, the exosomal pathway is activated.
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