期刊
ACS CHEMICAL NEUROSCIENCE
卷 11, 期 24, 页码 4336-4350出版社
AMER CHEMICAL SOC
DOI: 10.1021/acschemneuro.0c00588
关键词
Intrinsically disordered proteins; lipid-chaperone hypothesis; Alzheimer; Parkinson; diabetes mellitus; oxidized lipids
资金
- NIH [AG048934]
- Intramural Research Program at the National Institutes of Health, National Heart, Lung, and Blood Institute
- University of Catania, grant PiCeRi 2020-22
- Czech Science Foundation GA CR EXPRO grant [19-26854X]
An increasing number of human diseases has been shown to be linked to aggregation and amyloid formation by intrinsically disordered proteins (IDPs). Amylin, amyloid-beta, and alpha-synuclein are, indeed, involved in type-II diabetes, Alzheimer's, and Parkinson's, respectively. Despite the correlation of the toxicity of these proteins at early aggregation stages with membrane damage, the molecular events underlying the process is quite complex to understand. In this study, we demonstrate the crucial role of free lipids in the formation of lipid-protein complex, which enables an easy membrane insertion for amylin, amyloid-beta, and alpha-synuclein. Experimental results from a variety of biophysical methods and molecular dynamics results reveal that this common molecular pathway in membrane poration is shared by amyloidogenic (amylin, amyloid-beta, and alpha-synuclein) and nonamyloidogenic (rat IAPP, beta-synuclein) proteins. Based on these results, we propose a lipid-chaperone hypothesis as a unifying framework for protein-membrane poration.
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