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논문 기본 정보

자료유형
학술저널
저자정보
Yixin Chen (Department of Rehabilitation, Xiangya Hospital of Central South University) Bingfa Li (Department of Rehabilitation, Xiangya Hospital of Central South University) Jing Quan (Department of Rehabilitation, Xiangya Hospital of Central South University) Zhe Li (Department of Rehabilitation, Xiangya Hospital of Central South University) Yan Li (Department of Rehabilitation, Xiangya Hospital of Central South University) Yinbo Tang (Department of Rehabilitation, Xiangya Hospital of Central South University)
저널정보
대한척추신경외과학회 Neurospine Neurospine Vol.21 No.2
발행연도
2024.6
수록면
642 - 655 (14page)
DOI
10.14245/ns.2448038.019

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Objective: The therapeutic benefits of exosomes obtained from mesenchymal stem cells (MSCs) in acute spinal cord injury (SCI) have been demonstrated in recent years, but the precise mechanisms remain unknown. In this study, the efficacy and mechanisms of MSCderived exosomes (MSC-Exo) in acute SCI were investigated. Methods: By utilizing a BV2 ferroptosis cellular model and an SCI rat model, we investigated the effects of MSC-Exo on iron death related indicators and NF-E2 related factor 2 (Nrf2)/ GTP cyclolase I (GCH1)/5,6,7,8-tetrahydrobiopterin (BH4) signaling axis, as well as their therapeutic effects on SCI rats. Results: The results revealed that MSC-Exo effectively inhibited the production of ferrous iron, lipid peroxidation products malonaldehyde and reactive oxygen species, and ferroptosis-promoting factor prostaglandin-endoperoxide synthase 2. Concurrently, they upregulated ferroptosis suppressors FTH-1 (ferritin heavy chain 1), SLC7A11 (solute carrier family 7 member 11), FSP1 (ferroptosis suppressor protein 1), and GPX4 (glutathione peroxidase 4), contributing to enhanced neurological recovery in SCI rats. Further analysis showed the Nrf2/GTP/BH4 signaling pathway’s critical role in suppressing ferroptosis. Additionally, MSC-Exo was found to inhibit lipopolysaccharide-induced ferroptosis in BV2 cells and SCI rats by activating the Nrf2/GCH1/BH4 axis. Conclusion: In summary, the study demonstrates that MSC-Exo mitigates microglial cell ferroptosis via the Nrf2/GCH1/BH4 axis, showing potential for preserving and restoring neurological function post-SCI.

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