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Xing X, Xu P, Xing X, Xu Z, Huang Z, Li Z, Li X, Xiao Y. Effects of ADSC-Derived Exosome LRRC75A-AS1 on Anti-inflammatory Function After SCI. Appl Biochem Biotechnol 2024:10.1007/s12010-023-04836-9. [PMID: 38165592 DOI: 10.1007/s12010-023-04836-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2023] [Indexed: 01/04/2024]
Abstract
Spinal cord injury (SCI) is a highly debilitating disorder of the central nervous system that can severely impact an affected patient's quality of life. This study aimed to examine how adipose-derived mesenchymal stem cell exosomes (ADSC-exos) can be used to treat spinal cord injury. We analysed differentially expressed mRNAs in SCI using bioinformatics data, gene expression profiles in inflammatory cell models, RT-qPCR and WB. Apoptosis was detected with flow cytometry. Starbase provides the control mechanism for FDFT1. Target interactions were detected with dual-luciferase reporter and RIP assays. Exosomes were isolated from adipose tissue-derived mesenchymal stem cells and subsequently characterized with western blot analysis, transmission electron microscopy and nanoparticle tracking analysis. By analysing the GSE102964 database, we found that FDFT1 was significantly downregulated as SCI progressed. Overexpression of FDFT1 can significantly reverse the inflammatory response and apoptosis of BV2 cells induced by hemin. Mechanically, ADSC-exos can affect the expression of FDFT1 through the ceRNA mechanism mediated by LRRC75A-AS1 and in an RBP-dependent manner mediated by IGF2BP2. The overexpression of LRRC75A-AS1 significantly enhances BV2 apoptosis and can be reversed by FDFT1 knockdown. ADSC-exos LRRC75A-AS1 inhibits inflammation and reduces SCI by increasing the expression and stability of FDFT1 mRNA in a ceRNA and RBP-dependent manner.
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Affiliation(s)
- Xiaohui Xing
- Department of Neurosurgery, Liaocheng People's Hospital, No. 67 Dongchang West Road, Liaocheng, 252000, China
| | - Peng Xu
- Department of Neurosurgery, Liaocheng People's Hospital, No. 67 Dongchang West Road, Liaocheng, 252000, China
| | - Xiaoyang Xing
- Department of Laboratory, Liaocheng Maternal and Child Health Care Hospital, No.56, Changjiang Road, Liaocheng, 252000, Shandong, China
| | - Zhentao Xu
- Department of Neurosurgery, Liaocheng People's Hospital, No. 67 Dongchang West Road, Liaocheng, 252000, China
| | - Zhen Huang
- Department of Neurosurgery, Liaocheng People's Hospital, No. 67 Dongchang West Road, Liaocheng, 252000, China
| | - Zhongchen Li
- Department of Neurosurgery, Liaocheng People's Hospital, No. 67 Dongchang West Road, Liaocheng, 252000, China
| | - Xueyuan Li
- Department of Neurosurgery, Liaocheng People's Hospital, No. 67 Dongchang West Road, Liaocheng, 252000, China.
| | - Yilei Xiao
- Department of Neurosurgery, Liaocheng People's Hospital, No. 67 Dongchang West Road, Liaocheng, 252000, China.
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