Tang Yong, Xie Zhongyu, Ma Mengjun, Duan Kaidi, Li Yuxi, Ye Jichao
Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
Department of Orthopedics, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China.
Front Neurosci. 2021 Jun 23;15:669224. doi: 10.3389/fnins.2021.669224. eCollection 2021.
Spinal cord injury (SCI) is a devastating neurological disorder that affects thousands of individuals each year. Previously, our study in non-human primates with SCI demonstrated that methylprednisolone (MP) resulted in the dysfunction of neural stem cells (NSCs), which may help to explain the controversial roles of MP in SCI. However, the detailed mechanism is still unclear. In this manuscript, we investigated the LncRNA and mRNA expression profiles of NSCs treated with MP. A total of 63 differentially expressed LncRNAs and 174 differentially expressed mRNAs were identified. Gene ontology (GO) analysis showed that differentially expressed mRNAs were highly associated with terms related to regulation of external stimulation, secretion, and migration. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis results indicated that the PI3K-Akt signaling pathway contributed to the functions of MP treated NSCs. Besides, 3899 co-expression pairs were constructed among the differentially expressed LncRNA and mRNA, among which five predicted target mRNAs with the differentially expressed LncRNAs were identified. These results provide greater insight into the precise mechanisms of MP mediating NSC dysfunction in SCI.
脊髓损伤(SCI)是一种毁灭性的神经疾病,每年影响着成千上万的人。此前,我们在患有SCI的非人类灵长类动物中的研究表明,甲基强的松龙(MP)导致神经干细胞(NSC)功能障碍,这可能有助于解释MP在SCI中的争议性作用。然而,具体机制仍不清楚。在本手稿中,我们研究了用MP处理的NSC的长链非编码RNA(LncRNA)和信使核糖核酸(mRNA)表达谱。共鉴定出63个差异表达的LncRNA和174个差异表达的mRNA。基因本体(GO)分析表明,差异表达的mRNA与外部刺激调节、分泌和迁移相关的术语高度相关。京都基因与基因组百科全书(KEGG)分析结果表明,PI3K-Akt信号通路促成了用MP处理的NSC的功能。此外,在差异表达的LncRNA和mRNA之间构建了3899个共表达对,其中鉴定出5个与差异表达的LncRNA预测的靶mRNA。这些结果为MP介导SCI中NSC功能障碍的精确机制提供了更深入的见解。