The prion-like transmission of tau oligomers via exosomes.

The prion-like transmission of tau oligomers via exosomes.
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DOI:
10.3389/fnagi.2022.974414
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发表时间:
2022
影响因子:
4.8
通讯作者:
--
中科院分区:
医学2区
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--
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错误折叠蛋白的转化和传递奠定了朊病毒概念的基础。神经退行性疾病被认为是缺乏传染性的“朊病毒样”疾病。其中,tau病的特征是将天然tau蛋白转化为异常折叠的聚集体。在疾病的发展过程中,错误折叠的tau蛋白聚合成低聚物和细胞内神经原纤维缠结(nft)。虽然nft的毒性仍是一个持续的争论,但tau低聚物对早发性神经退行性发病机制的贡献是公认的。Tau寡聚物很容易从神经元转移到神经元,通过大脑传播,诱导神经变性。最近,有人提出通过外泌体传递tau低聚物。关于tau蛋白的错误折叠和繁殖,仍有太多的东西有待发现。在这里,我们总结了tau低聚物通过外泌体传播和繁殖的新发现。
The conversion and transmission of misfolded proteins established the basis for the prion concept. Neurodegenerative diseases are considered “prion-like” disorders that lack infectivity. Among them, tauopathies are characterized by the conversion of native tau protein into an abnormally folded aggregate. During the progression of the disease, misfolded tau polymerizes into oligomers and intracellular neurofibrillary tangles (NFTs). While the toxicity of NFTs is an ongoing debate, the contribution of tau oligomers to early onset neurodegenerative pathogenesis is accepted. Tau oligomers are readily transferred from neuron to neuron propagating through the brain inducing neurodegeneration. Recently, transmission of tau oligomers via exosomes is now proposed. There is still too much to uncover about tau misfolding and propagation. Here we summarize novel findings of tau oligomers transmission and propagation via exosomes.
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