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Ma J, Shi X, Li M, Chen S, Gu Q, Zheng J, Li D, Wu S, Yang H, Li X. MicroRNA-181a-2-3p shuttled by mesenchymal stem cell-secreted extracellular vesicles inhibits oxidative stress in Parkinson's disease by inhibiting EGR1 and NOX4. Cell Death Discov 2022; 8:33. [PMID: 35075150 PMCID: PMC8786891 DOI: 10.1038/s41420-022-00823-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 12/10/2021] [Accepted: 01/06/2022] [Indexed: 12/18/2022] Open
Abstract
The current study investigated the physiological mechanisms by which extracellular vesicle (EV)-encapsulated miR-181a-2-3p derived from mesenchymal stem cells (MSCs) might mediate oxidative stress (OS) in Parkinson's disease (PD). First, 6-hydroxydopamine (6-OHDA)-induced PD cell and mouse models were established, after which miR-181a-2-3p, EGR1, and NOX4 expression patterns were determined in SH-SY5Y cells and substantia nigra (SN) of PD mice. Next, the binding affinity among miR-181a-2-3p, EGR1, and NOX4 was identified using multiple assays. Gain- or loss-of-function experiments were further adopted to detect SH-SY5Y cell proliferation and apoptosis and to measure the levels of SOD, MDA, and ROS. Finally, the effects of miR-181a-2-3p from MSC-derived EVs in PD mouse models were also explored. It was found that miR-181a-2-3p was poorly expressed in 6-OHDA-induced SH-SY5Y cells, whereas miR-181a-2-3p from MSCs could be transferred into SH-SY5Y cells via EVs. In addition, miR-181a-2-3p could target and inhibit EGR1, which promoted the expression of NOX4. The aforementioned miR-181a-2-3p shuttled by MSC-derived EVs facilitated SH-SY5Y proliferation and SOD levels, but suppressed apoptosis and MDA and ROS levels by regulating EGR1 via inhibition of NOX4/p38 MAPK, so as to repress OS of PD. Furthermore, in PD mice, miR-181a-2-3p was carried by EVs from MSCs to alleviate apoptosis of dopamine neurons and OS, accompanied by increased expressions of α-syn and decreased 4-HNE in SN tissues. Collectively, our findings revealed that MSC-derived EV-loaded miR-181a-2-3p downregulated EGR1 to inhibit OS via the NOX4/p38 MAPK axis in PD.
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Affiliation(s)
- Jianjun Ma
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China.
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China.
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China.
| | - Xiaoxue Shi
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China
| | - Mingjian Li
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China
| | - Siyuan Chen
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China
| | - Qi Gu
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China
| | - Jinhua Zheng
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China
| | - Dongsheng Li
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China
| | - Shaopu Wu
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China
| | - Hongqi Yang
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China
| | - Xue Li
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, P. R. China
- Department of Neurology, Henan University People's Hospital, Zhengzhou, 450003, P. R. China
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