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-Structure paper
| タイトル | Stochastic misfolding drives the emergence of distinct α-synuclein strains. |
|---|---|
| ジャーナル・号・ページ | Neuron, Year 2026 |
| 掲載日 | 2026年2月27日 |
著者 | Raphaella W L So / Benedikt Frieg / José D Camino / Christopher Situ / Mark N Metri / Nicholas R G Silver / Le Yao Li / Alison Mao / Erica Stuart / Gunnar F Schröder / Joel C Watts / ![]() |
| PubMed 要旨 | α-Synuclein conformational strains provide a potential explanation for the clinical and pathological differences among synucleinopathies such as Parkinson's disease and multiple system atrophy. ...α-Synuclein conformational strains provide a potential explanation for the clinical and pathological differences among synucleinopathies such as Parkinson's disease and multiple system atrophy. However, how distinct α-synuclein strains arise remains unknown. Here, we observed conformational heterogeneity between individual preparations of α-synuclein pre-formed fibrils (PFFs) generated by polymerizing wild-type or A53T-mutant human α-synuclein under identical conditions. Moreover, we found that α-synuclein aggregates formed spontaneously in the brains of a transgenic synucleinopathy mouse model are conformationally diverse. Propagation of stochastically formed PFF- and brain-derived α-synuclein strains in mice initiated several distinct synucleinopathies. The conformational diversity of α-synuclein aggregates across PFF preparations and between individual mice demonstrates that α-synuclein can spontaneously form multiple self-propagating strains within an identical environment. This suggests that stochastic misfolding into distinct aggregate structures drives the emergence of α-synuclein strains and reveals that the intrinsic variability of common synucleinopathy research tools must be considered when designing and interpreting experiments. |
リンク | Neuron / PubMed:41763203 |
| 手法 | EM (らせん対称) |
| 解像度 | 3.02 - 3.64 Å |
| 構造データ | EMDB-53884, PDB-9rb3: EMDB-53885, PDB-9rb6: EMDB-53886, PDB-9rb7: EMDB-53887, PDB-9rb8: EMDB-53888, PDB-9rb9: EMDB-53889, PDB-9rba: EMDB-53890, PDB-9rbb: |
| 由来 |
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キーワード | PROTEIN FIBRIL / alpha-synuclein / fibril / A53T mutant |
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homo sapiens (ヒト)
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