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FUS-mediated HypEVs: Neuroprotective effects against ischemic stroke.
Bioact. Mater. 29, 196-213 (2023)
Few studies have investigated the properties and protein composition of small extracellular vesicles (sEVs) derived from neurons under hypoxic conditions. Presently, the extent of the involvement of these plentiful sEVs in the onset and progression of ischemic stroke remains an unresolved question. Our study systematically identified the characteristics of sEVs derived from neurons under hypoxic conditions (HypEVs) by physical characterization, sEV absorption, proteomics and transcriptomics analysis. The effects of HypEVs on neurites, cell survival, and neuron structure were assessed in vitro and in vivo by neural complexity tests, magnetic resonance imaging (MRI), Golgi staining, and Western blotting of synaptic plasticity-related proteins and apoptotic proteins. Knockdown of Fused in Sarcoma (FUS) small interfering RNA (siRNA) was used to validate FUS-mediated HypEV neuroprotection and mitochondrial mRNA release. Hypoxia promoted the secretion of sEVs, and HypEVs were more easily taken up and utilized by recipient cells. The MRI results illustrated that the cerebral infarction volume was reduced by 45% with the application of HypEVs, in comparison to the non- HypEV treatment group. Mechanistically, the FUS protein is necessary for the uptake and neuroprotection of HypEVs against ischemic stroke as well as carrying a large amount of mitochondrial mRNA in HypEVs. However, FUS knockdown attenuated the neuroprotective rescue capabilities of HypEVs. Our comprehensive dataset clearly illustrates that FUS-mediated HypEVs deliver exceptional neuroprotective effects against ischemic stroke, primarily through the maintenance of neurite integrity and the reduction of mitochondria-associated apoptosis.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Fus ; Hypoxia ; Mitochondrial Mrna ; Neuron-derived Small Extracellular Vesicle ; Neuroprotection; Exosomes; Mitochondria; Insights; Health; Translation; Plasticity; Platform; Nerve
ISSN (print) / ISBN
2452-199X
e-ISSN
2452-199X
Journal
Bioactive Materials
Quellenangaben
Volume: 29,
Pages: 196-213
Publisher
KeAi Communications Co.
Publishing Place
16 Donghuangchenggen North St, Building 5, Room 411, Beijing, Dongcheng District 100009, Peoples R China
Non-patent literature
Publications
Institute(s)
Institute for Tissue Engineering and Regenerative Medicine (ITERM)
Grants
Science and Technology Planning Project of Guangdong Province, China
Natural Science Foundation of Guangdong Province
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Science and Technology Projects in Guangzhou, China
Science and Technology Program of Guangzhou: Key Lab of Guangzhou Basic and Translational Research of Pan-vascular Diseases
Young Talent Support Project of Guangzhou Association for Science and Technology
Guangdong Basic and Applied Basic Research Foundation
China Postdoctoral Science Foundation
Natural Science Foundation of Guangdong Province
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Science and Technology Projects in Guangzhou, China
Science and Technology Program of Guangzhou: Key Lab of Guangzhou Basic and Translational Research of Pan-vascular Diseases
Young Talent Support Project of Guangzhou Association for Science and Technology
Guangdong Basic and Applied Basic Research Foundation
China Postdoctoral Science Foundation