Structural evolution of fibril polymorphs during amyloid assembly
Structural evolution of fibril polymorphs during amyloid assembly
复制标题
淀粉样蛋白组装过程中原纤维多晶型物的结构演化
DOI:
10.1016/j.cell.2023.11.025
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发表时间:
2023
期刊:
影响因子:
64.5
通讯作者:
Wilkinson M
中科院分区:
文献类型:
--
作者:
Wilkinson M
Cryoelectron microscopy (cryo-EM) has provided unprecedented insights into amyloid fibril structures, including those associated with disease. However, these structures represent the endpoints of long assembly processes, and their relationship to fibrils formed early in assembly is unknown. Consequently, whether different fibril architectures, with potentially different pathological properties, form during assembly remains unknown. Here, we used cryo-EM to determine structures of amyloid fibrils at different times duringin vitrofibrillation of a disease-related variant of human islet amyloid polypeptide (IAPP-S20G). Strikingly, the fibrils formed in the lag, growth, and plateau phases have different structures, with new forms appearing and others disappearing as fibrillation proceeds. A time course with wild-type hIAPP also shows fibrils changing with time, suggesting that this is a general property of IAPP amyloid assembly. The observation of transiently populated fibril structures has implications for understanding amyloid assembly mechanisms with potential new insights into amyloid progression in disease.
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影响因子:
5.6
作者:
Meinhardt J;Sachse C;Hortschansky P;Grigorieff N;Fändrich M
通讯作者:
Fändrich M
DOI:
10.1016/j.bbapap.2010.04.001
发表时间:
2010-07
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Biancalana M;Koide S
通讯作者:
Koide S
影响因子:
16.8
作者:
Cao, Qin;Boyer, David R.;Eisenberg, David S.
通讯作者:
Eisenberg, David S.
影响因子:
16.6
作者:
Bansal A;Schmidt M;Rennegarbe M;Haupt C;Liberta F;Stecher S;Puscalau-Girtu I;Biedermann A;Fändrich M
通讯作者:
Fändrich M
影响因子:
16.8
作者:
Cao, Qin;Boyer, David R.;Sawaya, Michael R.;Abskharon, Romany;Saelices, Lorena;Nguyen, Binh A.;Lu, Jiahui;Murray, Kevin A.;Kandeel, Fouad;Eisenberg, David S.
通讯作者:
Eisenberg, David S.