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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Xiong, Wu Li, Cong Kong, Guang Zeng, Qiang Wang, Siming Yin, Guoyong Gu, Jun Fan, Jin |
| Abstract | Neuroinflammation is an important cause of poor prognosis in patients with spinal cord injury. pyroptosis is a new type of inflammatory cell death. Treg cells has been shown to play an anti-inflammatory role in a variety of inflammatory diseases, including inflammatory bowel disease, amyotrophic lateral sclerosis, and arthritis. However, little is known about Treg cells' potential role in pyroptosis following spinal cord injury. The aim of this research was to look into the effect of Treg cells to motor function recovery, pyroptosis and the mechanism behind it after SCI. Here, we found that pyroptosis mainly occurred in microglia on the seventh day after spinal cord injury. Konckout Treg cells resulted in widely pyroptosis and poor motor recovery after SCI. In conversely, over-infiltration of Treg cell in mice by tail vein injection had beneficial effects following SCI.Treg cell-derived exosomes promote functional recovery by inhibiting microglia pyroptosis in vivo. Bioinformatic analysis revealed that miRNA-709 was significantly enriched in Treg cells and Treg cell-secreted exosomes. NKAP has been identified as a miRNA-709 target gene. Moreover, experiments confirmed that Treg cells targeted the NKAP via exosomal miR-709 to reduce microglia pyroptosis and promote motor function recovery after SCI. More importantly, The miR-709 overexpressed exosomes we constructed significantly reduced the inflammatory response and improved motor recovery after spinal cord injury. In brief, our findings indicate a possible mechanism for communication between Treg cells and microglia, which opens up a new perspective for alleviating neuroinflammation after SCI. |
| Related Links | https://jnanobiotechnology.biomedcentral.com/counter/pdf/10.1186/s12951-022-01724-y.pdf |
| Ending Page | 17 |
| Page Count | 17 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 14773155 |
| DOI | 10.1186/s12951-022-01724-y |
| Journal | Journal of Nanobiotechnology |
| Issue Number | 1 |
| Volume Number | 20 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2022-12-13 |
| Access Restriction | Open |
| Subject Keyword | Biotechnology Nanotechnology Molecular Medicine Spinal cord injury Treg cell Pyroptosis Exosomes Neuroinflammation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Bioengineering Pharmaceutical Science Medicine Applied Microbiology and Biotechnology Biomedical Engineering Molecular Medicine Nanoscience and Nanotechnology |
| Journal Impact Factor | 10.6/2023 |
| 5-Year Journal Impact Factor | 11.4/2023 |
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