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FUS-mediated HypEVs: Neuroprotective effects against ischemic stroke
Yousheng Wu1,2,3, Xiaoxiong Huang1,2,4, Zefeng Tan5
1Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, Guangzhou, China.
Bioactive Materials
|August 25, 2023
Summary
Small extracellular vesicles (sEVs) from hypoxic neurons, termed HypEVs, show significant neuroprotective effects against ischemic stroke. These HypEVs, facilitated by the FUS protein, reduce brain infarction and protect neuronal structures.
Area of Science:
- Neuroscience
- Biochemistry
- Cell Biology
Background:
- Limited understanding of small extracellular vesicles (sEVs) from hypoxic neurons.
- The role of these sEVs in ischemic stroke progression is largely unknown.
Purpose of the Study:
- To characterize sEVs from hypoxic neurons (HypEVs).
- To investigate the neuroprotective mechanisms of HypEVs in ischemic stroke.
Main Methods:
- Physical characterization, proteomics, and transcriptomics of HypEVs.
- In vitro and in vivo assessment of HypEV effects on neurons.
- Investigated the role of Fused in Sarcoma (FUS) protein using siRNA knockdown.
Main Results:
- Hypoxia increased sEV secretion; HypEVs showed enhanced uptake.
- HypEV treatment reduced cerebral infarction volume by 45% in vivo.
- FUS protein is crucial for HypEV uptake, neuroprotection, and mitochondrial mRNA transport.
Conclusions:
- FUS-mediated HypEVs offer significant neuroprotection against ischemic stroke.
- HypEVs maintain neurite integrity and reduce mitochondria-associated apoptosis.
- FUS protein is essential for the therapeutic efficacy of HypEVs.
