期刊
NANO TODAY
卷 36, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.nantod.2020.101027
关键词
alpha-Synuclein; Cell-to-cell transmission; Prion-like; Parkinson's disease; Nanozyme
资金
- National Natural Science Foundation of China [51772256]
- Program for Innovative Research Team (in Science and Technology) in University of Henan Province [19IRT-STHN026]
- Program for Zhongyuan Leading Talents of Scienceand Technology Innovation in Henan Province [204200510016]
- National Key R&D Program of China [2018YFA0507600]
- Parkinson's Foundation [PF-JFA-1933]
- Maryland Stem Cell Research Foundation Discovery Award [2019-MSCRFD-4292]
- American Parkinson's Disease Association
- JPB Foundation
- Johns Hopkins Hospital
- Foundation's Parkinson's Disease Programs [H-2018, M-2016, M-2019]
Braak's prion-like theory challenges the conventional understanding of Parkinson's disease, while the use of nanomaterials like nanozyme to inhibit the spreading of alpha-synuclein shows potential as a therapeutic strategy against PD and other prion-like proteinopathies.
Braak's prion-like theory fundamentally subverts the understanding of Parkinson's disease (PD). Emerging evidence shows that pathologic alpha-synuclein (alpha-syn) is a prion-like protein that spreads from one region to another in PD brain, which is an essential driver to the pathogenesis of PD. Thus far, there is a big knowledge gap that limited nanomaterial that can block prion-like spreading. Here, alpha-syn preformed fibrils (PFF) are used to model prion-like spreading and biocompatible antioxidant nanozyme, PtCu nanoalloys (NAs), is applied to fight against alpha-syn spreading. The results show that PtCu NAs significantly inhibit alpha-syn pathology, cell death, and neuron-to-neuron transmission by scavenging reactive oxygen species (ROS) in primary neuron cultures. Moreover, the PtCu NAs significantly inhibit alpha-syn spreading induced by intrastriatal injection of PFF. It is the first time to observe nanozyme can block prion-like spreading, which provides a proof of concept for nanozyme therapy. It is also anticipated that the biomedical application of nanozyme against prion-like spreading could be optimized and considered to be developed as a therapeutic strategy against Parkinson's disease, Alzheimer's disease, and other prion-like proteinopathies. (C) 2020 Elsevier Ltd. All rights reserved.
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