Japan Agency for Medical Research and Development (AMED)
JP18ek0109391
日本
Japan Agency for Medical Research and Development (AMED)
JP18dm020719
日本
National Institutes of Health/National Institute on Aging (NIH/NIA)
P30AG010133
米国
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)
U01NS110437
米国
引用
ジャーナル: Nature / 年: 2020 タイトル: Structures of α-synuclein filaments from multiple system atrophy. 著者: Manuel Schweighauser / Yang Shi / Airi Tarutani / Fuyuki Kametani / Alexey G Murzin / Bernardino Ghetti / Tomoyasu Matsubara / Taisuke Tomita / Takashi Ando / Kazuko Hasegawa / Shigeo ...著者: Manuel Schweighauser / Yang Shi / Airi Tarutani / Fuyuki Kametani / Alexey G Murzin / Bernardino Ghetti / Tomoyasu Matsubara / Taisuke Tomita / Takashi Ando / Kazuko Hasegawa / Shigeo Murayama / Mari Yoshida / Masato Hasegawa / Sjors H W Scheres / Michel Goedert / 要旨: Synucleinopathies, which include multiple system atrophy (MSA), Parkinson's disease, Parkinson's disease with dementia and dementia with Lewy bodies (DLB), are human neurodegenerative diseases. ...Synucleinopathies, which include multiple system atrophy (MSA), Parkinson's disease, Parkinson's disease with dementia and dementia with Lewy bodies (DLB), are human neurodegenerative diseases. Existing treatments are at best symptomatic. These diseases are characterized by the presence of, and believed to be caused by the formation of, filamentous inclusions of α-synuclein in brain cells. However, the structures of α-synuclein filaments from the human brain are unknown. Here, using cryo-electron microscopy, we show that α-synuclein inclusions from the brains of individuals with MSA are made of two types of filament, each of which consists of two different protofilaments. In each type of filament, non-proteinaceous molecules are present at the interface of the two protofilaments. Using two-dimensional class averaging, we show that α-synuclein filaments from the brains of individuals with MSA differ from those of individuals with DLB, which suggests that distinct conformers or strains characterize specific synucleinopathies. As is the case with tau assemblies, the structures of α-synuclein filaments extracted from the brains of individuals with MSA differ from those formed in vitro using recombinant proteins, which has implications for understanding the mechanisms of aggregate propagation and neurodegeneration in the human brain. These findings have diagnostic and potential therapeutic relevance, especially because of the unmet clinical need to be able to image filamentous α-synuclein inclusions in the human brain.
EMPIAR-10357 (タイトル: CryoEM dataset of sarkosyl-insoluble fractions from the putamen of multiple system atrophy brain of case 1 Data size: 3.2 TB Data #1: Unaligned multi-frame movies [micrographs - multiframe] Data #2: Dose-weighted aligned micrographs [micrographs - single frame] Data #3: Polished particle stacks [picked particles - single frame - processed])