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Schweighauser, Manuel; Arseni, Diana; Bacioglu, Mehtap; Huang, Melissa; Lövestam, Sofia; Shi, Yang; Yang, Yang; Zhang, Wenjuan; Kotecha, Abhay; Garringer, Holly J; Vidal, Ruben; Hallinan, Grace I; Newell, Kathy L; Tarutani, Airi; Murayama, Shigeo; Miyazaki, Masayuki; Saito, Yuko; Yoshida, Mari; Hasegawa, Kazuko; Lashley, Tammaryn; Revesz, Tamas; Kovacs, Gabor G; van Swieten, John; Takao, Masaki; Hasegawa, Masato; Ghetti, Bernardino; Spillantini, Maria Grazia; Ryskeldi-Falcon, Benjamin; Murzin, Alexey G; Goedert, Michel; Scheres, Sjors H W
Nature (London), 05/2022, Volume: 605, Issue: 7909Journal Article
Many age-dependent neurodegenerative diseases, such as Alzheimer's and Parkinson's, are characterized by abundant inclusions of amyloid filaments. Filamentous inclusions of the proteins tau, amyloid-β, α-synuclein and transactive response DNA-binding protein (TARDBP; also known as TDP-43) are the most common . Here we used structure determination by cryogenic electron microscopy to show that residues 120-254 of the lysosomal type II transmembrane protein 106B (TMEM106B) also form amyloid filaments in human brains. We determined the structures of TMEM106B filaments from a number of brain regions of 22 individuals with abundant amyloid deposits, including those resulting from sporadic and inherited tauopathies, amyloid-β amyloidoses, synucleinopathies and TDP-43 proteinopathies, as well as from the frontal cortex of 3 individuals with normal neurology and no or only a few amyloid deposits. We observed three TMEM106B folds, with no clear relationships between folds and diseases. TMEM106B filaments correlated with the presence of a 29-kDa sarkosyl-insoluble fragment and globular cytoplasmic inclusions, as detected by an antibody specific to the carboxy-terminal region of TMEM106B. The identification of TMEM106B filaments in the brains of older, but not younger, individuals with normal neurology indicates that they form in an age-dependent manner.
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