Melatonin Promotes Neuroprotection of H2O2-induced Neural Stem Cells via lncRNA MEG3/miRNA-27a-3p/MAP2K4 axis. (15th October 2020)

• Record Type: Journal Article
• Authors: Chen, Yuyong; He, Lei; Pang, Mao; Ke, Zekai; Zheng, Xiaozuo; Feng, Feng; Yang, Bu; Wang, Nanxiang; Liu, Bin; Wu, Tao; Shu, Tao
• Is Part Of: Neuroscience. Volume 446(2020)
• Page Start: 69
• Page End: 79
• Publication Date: 2020-10-15
• Subjects: lncRNAs long noncoding RNAs -- MAPK mitogen-activated protein kinase -- MEG3 maternally expressed gene 3 -- NSCs neural stem cells -- ROS reactive oxygen species; melatonin -- neural stem cells -- MEG3 -- miRNA-27a-3p -- MAP2K4 -- reactive oxygen species; Neurochemistry -- Periodicals; Neurophysiology -- Periodicals; Neurology -- Periodicals; Neurochimie -- Périodiques; Neurophysiologie -- Périodiques; Neurochemistry; Neurophysiology; Electronic journals; Periodicals; Electronic journals; 612.8
• DOI: 10.1016/j.neuroscience.2020.06.026
• Languages: English
• ISSNs: 0306-4522

Abstract

Graphical abstract: Highlights: Melatonin protected NSCs from H2 O2 -induced reactive oxygen species. Melatonin inhibited the expression of MEG3 by methylation. Downregulation of MEG3 promoted neuroprotective effects by targeting miRNA-27a-3p. miRNA-27a-3p decreased JNK phosphorylation by targeting MAP2K4. Abstract: Melatonin is crucial for protecting neural stem cells (NSCs) from reactive oxygen species (ROS). However, the mechanism underlying these processes is unclear. In this study, we first investigated the significantly upregulated lncRNA MEG3 biomarker in the H2 O2 -induced NSCs and control groups. Melatonin inhibited the expression of MEG3 by methylation. MEG3 overexpression reversed the positive effects of melatonin on NSCs against H2 O2 . Furthermore, MEG3 reduced the expression levels of its targeted miRNA-27a-3p, which could be considered a neuroprotective effect. In addition, the elevated miRNA-27a-3p decreased JNK phosphorylation by targeting MAP2K4. Overexpression of MAP2K4 suppressed the neuroprotective effects of miRNA-27a-3p. Therefore, melatonin appeared to protect NSCs from H2 O2 -induced ROS by modification of the MEG3/miRNA-27a-3p/MAP2K4 axis.