Functionalized Mesoporous Silicas Direct Structural Polymorphism of Amyloid-β Fibrils
Functionalized Mesoporous Silicas Direct Structural Polymorphism of Amyloid-β Fibrils
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功能化介孔二氧化硅淀粉样蛋白-β原纤维的直接结构多态性
DOI:
10.1021/acs.langmuir.0c00827
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发表时间:
2020
期刊:
影响因子:
3.9
通讯作者:
Keitz, Benjamin K.
中科院分区:
文献类型:
--
作者:
Lucas, Michael J.;Pan, Henry S.;Verbeke, Eric J.;Webb, Lauren J.;Taylor, David W.;Keitz, Benjamin K.
The aggregation of amyloid-β (Aβ) is associated with the onset of Alzheimer’s disease (AD) and involves a complex kinetic pathway as monomers self-assemble into fibrils. A central feature of amyloid fibrils is the existence of multiple structural polymorphs, which complicates the development of disease-relevant structure–function relationships. Developing these relationships requires new methods to control fibril structure. In this work, we evaluated the effect that mesoporous silicas (SBA-15) functionalized with hydrophobic (SBA-PFDTS) and hydrophilic groups (SBA-PEG) have on the aggregation kinetics and resulting structure of Aβ1–40fibrils. The hydrophilic SBA-PEG had little effect on amyloid kinetics, while as-synthesized and hydrophobic SBA-PFDTS accelerated aggregation kinetics. Subsequently, we quantified the relative population of fibril structures formed in the presence of each material using electron microscopy. Fibrils formed from Aβ1–40exposed to SBA-PEG were structurally similar to control fibrils. In contrast, Aβ1–40incubated with SBA-15 or SBA-PFDTS formed fibrils with shorter crossover distances that were more structurally representative of fibrils found in AD patient derived samples. Overall, our results suggest that mesoporous silicas and other exogenous materials are promising scaffolds for thede novoproduction of specific fibril polymorphs of Aβ1–40and other amyloidogenic proteins.
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影响因子:
4.6
作者:
Han S;Kollmer M;Markx D;Claus S;Walther P;Fändrich M
通讯作者:
Fändrich M
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:
3.2
作者:
Rupam Ghosh;Jijun Dong;Joe Wall;K. K. Frederick
通讯作者:
K. K. Frederick
影响因子:
3
作者:
Tang, Guang;Peng, Liwei;Ludtke, Steven J.
通讯作者:
Ludtke, Steven J.