Misfolded amyloid-β-42 impairs the endosomal-lysosomal pathway.
Misfolded amyloid-β-42 impairs the endosomal-lysosomal pathway.
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DOI:
10.1007/s00018-020-03464-4
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发表时间:
2020-12
期刊:
影响因子:
--
通讯作者:
Serpell LC
中科院分区:
文献类型:
--
作者:
Marshall KE;Vadukul DM;Staras K;Serpell LC
Misfolding and aggregation of proteins is strongly linked to several neurodegenerative diseases, but how such species bring about their cytotoxic actions remains poorly understood. Here we used specifically-designed optical reporter probes and live fluorescence imaging in primary hippocampal neurons to characterise the mechanism by which prefibrillar, oligomeric forms of the Alzheimer’s-associated peptide, Aβ42, exert their detrimental effects. We used a pH-sensitive reporter, Aβ42-CypHer, to track Aβ internalisation in real-time, demonstrating that oligomers are rapidly taken up into cells in a dynamin-dependent manner, and trafficked via the endo-lysosomal pathway resulting in accumulation in lysosomes. In contrast, a non-assembling variant of Aβ42 (vAβ42) assayed in the same way is not internalised. Tracking ovalbumin uptake into cells using CypHer or Alexa Fluor tags shows that preincubation with Aβ42 disrupts protein uptake. Our results identify a potential mechanism by which amyloidogenic aggregates impair cellular function through disruption of the endosomal–lysosomal pathway. The online version of this article (10.1007/s00018-020-03464-4) contains supplementary material, which is available to authorized users.
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DOI:
10.1523/jneurosci.6412-10.2011
发表时间:
2011-05-25
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
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通讯作者:
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发表时间:
1983-08
期刊:
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影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
2015-07-14
影响因子:
11.1
作者:
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通讯作者:
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DOI:
10.1073/pnas.95.11.6448
发表时间:
1998-05-26
影响因子:
11.1
作者:
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通讯作者:
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影响因子:
14.5
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Lesne, Sylvain E.;Sherman, Mathew A.;Ashe, Karen H.
通讯作者:
Ashe, Karen H.