PMID- 32491927 OWN - NLM STAT- MEDLINE DCOM- 20201022 LR - 20201022 IS - 1522-1563 (Electronic) IS - 0363-6143 (Linking) VI - 319 IP - 2 DP - 2020 Aug 1 TI - Overexpressed microRNA-539-5p inhibits inflammatory response of neurons to impede the progression of cerebral ischemic injury by histone deacetylase 1. PG - C381-C391 LID - 10.1152/ajpcell.00576.2019 [doi] AB - Several microRNAs (miRNAs or miRs) regulate cerebral ischemic injury outcomes; however, little is known about the role of miR-539-5p during cerebral ischemic injury or the postischemic state. Cerebral ischemic injury was modeled in vitro by exposing human cortical neurons to oxygen-glucose deprivation (OGD) and in vivo by occluding the middle cerebral artery (MCAO) in a rat model. The effects of miR-539-5p, histone deacetylase 1 (HDAC1), and early growth response 2 (EGR2) on cerebral ischemia were investigated using gain- and loss-of-function experiments. We identified changes in miR-539-5p, HDAC1, EGR2, and phosphorylated c-Jun NH(2)-terminal kinase (JNK). The interaction among miR-539-5p, HDAC1, and EGR2 was determined by dual luciferase reporter gene assay, chromatin immunoprecipitation, and coimmunoprecipitation. We also investigated the effects on cell viability and apoptosis and changes in inflammatory cytokine expression and spatial memory on MCAO rats. miR-539-5p and EGR2 were poorly expressed, while HDAC1 was highly expressed in OGD-treated HCN-2 cells. miR-539-5p targeted HDAC1, while HDAC1 prevented acetylation of EGR2 resulting in its downregulation and subsequent activation of the JNK pathway. Overexpression of miR-539-5p or EGR2 or silencing HDAC1 improved viability and reduced apoptosis of OGD-treated HCN-2 cells in vitro. Furthermore, overexpression of miR-539-5p improved spatial memory, while decreasing cell apoptosis and inflammation in MCAO rats. Collectively, these data suggest that miR-539-5p targets HDAC1 to upregulate EGR2, thus blocking the JNK signaling pathway, by which cerebral ischemic injury is alleviated. FAU - Xue, Hang AU - Xue H AD - Department of Neurotraumatic Surgery, The First Hospital of Jilin University, Changchun, People's Republic of China. FAU - Liu, Jianpeng AU - Liu J AD - Department of Neurosurgery, Yuncheng Central Hospital, Yuncheng, People's Republic of China. FAU - Shi, Lin AU - Shi L AD - Department of Neurotraumatic Surgery, The First Hospital of Jilin University, Changchun, People's Republic of China. FAU - Yang, Hongfa AU - Yang H AUID- ORCID: 0000-0002-8409-4889 AD - Department of Neurotraumatic Surgery, The First Hospital of Jilin University, Changchun, People's Republic of China. LA - eng PT - Journal Article PT - Retracted Publication DEP - 20200603 PL - United States TA - Am J Physiol Cell Physiol JT - American journal of physiology. Cell physiology JID - 100901225 RN - 0 (Cytokines) RN - 0 (Early Growth Response Protein 2) RN - 0 (Egr2 protein, rat) RN - 0 (MIRN539 microRNA, human) RN - 0 (MIRN539 microRNA, rat) RN - 0 (MicroRNAs) RN - EC 3.5.1.98 (HDAC1 protein, human) RN - EC 3.5.1.98 (Hdac1 protein, rat) RN - EC 3.5.1.98 (Histone Deacetylase 1) RN - IY9XDZ35W2 (Glucose) SB - IM RIN - Am J Physiol Cell Physiol. 2020 Nov 1;319(5):C945. PMID: 33166174 MH - Animals MH - Apoptosis/genetics MH - Brain Ischemia/*genetics/pathology MH - Cytokines/metabolism MH - Disease Progression MH - Early Growth Response Protein 2/genetics MH - Gene Expression Regulation/genetics MH - Glucose/metabolism MH - Histone Deacetylase 1/*genetics MH - Humans MH - Inflammation/genetics MH - MicroRNAs/*genetics MH - Middle Cerebral Artery/injuries/pathology MH - Neurons/metabolism/pathology MH - Rats OTO - NOTNLM OT - c-Jun NH2-terminal kinase pathway OT - cerebral ischemic injury OT - early growth response 2 OT - histone deacetylase 1 OT - inflammation OT - microRNA-539-5p EDAT- 2020/06/04 06:00 MHDA- 2020/10/23 06:00 CRDT- 2020/06/04 06:00 PHST- 2020/06/04 06:00 [pubmed] PHST- 2020/10/23 06:00 [medline] PHST- 2020/06/04 06:00 [entrez] AID - 10.1152/ajpcell.00576.2019 [doi] PST - ppublish SO - Am J Physiol Cell Physiol. 2020 Aug 1;319(2):C381-C391. doi: 10.1152/ajpcell.00576.2019. Epub 2020 Jun 3.