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Guo Z, Zhong W, Zou Z. miR-98-5p Prevents Hippocampal Neurons from Oxidative Stress and Apoptosis by Targeting STAT3 in Epilepsy in vitro. Neuropsychiatr Dis Treat 2023; 19:2319-2329. [PMID: 37928166 PMCID: PMC10624118 DOI: 10.2147/ndt.s415597] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 08/09/2023] [Indexed: 11/07/2023] Open
Abstract
Purpose Epilepsy is a serious mental disease, for which oxidative stress and hippocampal neuron death after seizure is crucial. Numerous miRNAs are involved in epilepsy. However, the function of miR-98-5p in oxidative stress and hippocampal neuron death after seizure is unclear, which is the purpose of current study. Methods Magnesium ion (Mg2+)-free solution was used to establish the in vitro epilepsy model in hippocampal neurons. Oxidative stress was exhibited by measuring malondialdehyde (MDA) level and superoxide Dismutase (SOD) activity using enzyme-linked immune sorbent assay (ELISA) kits. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and flow cytometry were applied for the examination of neuron viability and apoptosis, respectively. Quantitative reverse-transcription polymerase chain reaction (qRT-PCR) and Western blot were used to evaluate the mRNA and protein levels of miR-98-5p and signal transducer and activator of transcription (STAT3), respectively. The relationship between miR-98-5p and STAT3 was predicted by TargetScan 7.2, and identified by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. Results miR-98-5p was decreased in the in vitro epileptic model of hippocampal neurons induced by Mg2+-free solution, whose overexpression rescued oxidative stress and neuron apoptosis in epileptic model. Moreover, overexpression of STAT3, one downstream target of miR-98-5p, partially eliminated the effects of miR-98-5p mimic. Conclusion We shed lights on a pivotal mechanism of miR-98-5p in regulating neuron oxidative stress and apoptosis after seizures, providing potential biomarkers for the diagnosis of epilepsy and therapeutic targets for the treatment of epilepsy.
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Affiliation(s)
- Zhizhuan Guo
- Department of Neurology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, 030032, People’s Republic of China
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China
| | - Wenwen Zhong
- Department of Rehabilitation Medicine, Huangshi Maternal and Child Health Hospital, Edong Medical Group, Huang Shi, Hubei, 435000, People’s Republic of China
| | - Zhengshou Zou
- Department of Neurology, Huangshi Central Hospital, Edong Medical Group, Huangshi, Hubei, 435000, People’s Republic of China
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Liang Y, Cen J, Huang Y, Fang Y, Wang Y, Shu G, Pan Y, Huang K, Dong J, Zhou M, Xu Y, Luo J, Liu M, Zhang J. CircNTNG1 inhibits renal cell carcinoma progression via HOXA5-mediated epigenetic silencing of Slug. Mol Cancer 2022; 21:224. [PMID: 36536414 PMCID: PMC9761964 DOI: 10.1186/s12943-022-01694-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 12/03/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Recent studies have identified that circular RNAs (circRNAs) have an important role in cancer via their well-recognized sponge effect on miRNAs, which regulates a large variety of cancer-related genes. However, only a few circRNAs have been well-studied in renal cell carcinoma (RCC) and their regulatory function remains largely elusive. METHODS Bioinformatics approaches were used to characterize the differentially expressed circRNAs in our own circRNA-sequencing dataset, as well as two public circRNA microarray datasets. CircNTNG1 (hsa_circ_0002286) was identified as a potential tumor-suppressing circRNA. Transwell assay and CCK-8 assay were used to assess phenotypic changes. RNA pull-down, luciferase reporter assays and FISH experiment were used to confirm the interactions among circNTNG1, miR-19b-3p, and HOXA5 mRNA. GSEA was performed to explore the downstream pathway regulated by HOXA5. Immunoblotting, chromatin immunoprecipitation, and methylated DNA immunoprecipitation were used to study the mechanism of HOXA5. RESULTS In all three circRNA datasets, circNTNG1, which was frequently deleted in RCC, showed significantly low expression in the tumor group. The basic properties of circNTNG1 were characterized, and phenotype studies also demonstrated the inhibitory effect of circNTNG1 on RCC cell aggressiveness. Clinically, circNTNG1 expression was associated with RCC stage and Fuhrman grade, and it also served as an independent predictive factor for both OS and RFS of RCC patients. Next, the sponge effect of circNTNG1 on miR-19b-3p and the inhibition of HOXA5 by miR-19b-3p were validated. GSEA analysis indicated that HOXA5 could inactivate the epithelial-mesenchymal transition (EMT) process, and this inactivation was mediated by HOXA5-induced SNAI2 (Slug) downregulation. Finally, it was confirmed that the Slug downregulation was caused by HOXA5, along with the DNA methyltransferase DNMT3A, binding to its promoter region and increasing the methylation level. CONCLUSIONS Based on the experimental data, in RCC, circNTNG1/miR-19b-3p/HOXA5 axis can regulate the epigenetic silencing of Slug, thus interfering EMT and metastasis of RCC. Together, our findings provide potential biomarkers and novel therapeutic targets for future study in RCC.
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Affiliation(s)
- Yanping Liang
- grid.12981.330000 0001 2360 039XDepartment of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Junjie Cen
- grid.12981.330000 0001 2360 039XDepartment of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yong Huang
- grid.12981.330000 0001 2360 039XDepartment of Emergency, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yong Fang
- grid.12981.330000 0001 2360 039XDepartment of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yunfei Wang
- grid.12981.330000 0001 2360 039XDepartment of Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Guannan Shu
- grid.12981.330000 0001 2360 039XDepartment of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yihui Pan
- grid.12981.330000 0001 2360 039XDepartment of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Kangbo Huang
- grid.488530.20000 0004 1803 6191Department of Urology, Sun Yat-sen University Cancer Center, Guangzhou, 510060 China
| | - Jiaqi Dong
- grid.12981.330000 0001 2360 039XDepartment of Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Mi Zhou
- grid.12981.330000 0001 2360 039XDepartment of Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yi Xu
- grid.12981.330000 0001 2360 039XDepartment of Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Junhang Luo
- grid.12981.330000 0001 2360 039XDepartment of Urology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China ,grid.12981.330000 0001 2360 039XInstitute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Min Liu
- grid.12981.330000 0001 2360 039XDepartment of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
| | - Jiaxing Zhang
- grid.12981.330000 0001 2360 039XDepartment of Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080 China
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Yu Y, Hou K, Ji T, Wang X, Liu Y, Zheng Y, Xu J, Hou Y, Chi G. The role of exosomal microRNAs in central nervous system diseases. Mol Cell Biochem 2021; 476:2111-2124. [PMID: 33528706 DOI: 10.1007/s11010-021-04053-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/09/2021] [Indexed: 02/07/2023]
Abstract
MicroRNAs (miRNA), endogenous non-coding RNAs approximately 22 nucleotides long, regulate gene expression by mediating translational inhibition or mRNA degradation. Exosomes are a tool for intercellular transmission of information in which miRNA exchange plays an important role. Under pathophysiological conditions in the central nervous system (CNS), cellular transmission of exosomal miRNAs can regulate signaling pathways. Exosomal miRNAs are involved in the occurrence and development of diverse CNS diseases, such as traumatic brain injury, spinal cord injury, stroke, neurodegenerative diseases, epilepsy, and glioma. The use of exosomes as transport vehicles for certain miRNAs provides a novel therapeutic strategy for CNS diseases. Furthermore, the exosomes in body fluids change with the occurrence of diseases, indicating that subtle changes in physiological and pathological processes in vivo could be recognized by analyzing exosomes. Exosomal analysis is expected to act as a novel tool for diagnosis and prediction of neurological diseases. In this review, we present the current understanding of the implications of miRNAs in CNS diseases and summarize the role and mechanism of action of exosomal miRNA in nervous system disease models.
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Affiliation(s)
- Yifei Yu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, 130000, People's Republic of China
| | - Kun Hou
- Department of Neurosurgery, The First Hospital of Jilin University, Changchun, 130000, People's Republic of China
| | - Tong Ji
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, 130000, People's Republic of China
| | - Xishu Wang
- Clinical Medical College, Jilin University, Changchun, 130000, People's Republic of China
| | - Yining Liu
- Clinical Medical College, Jilin University, Changchun, 130000, People's Republic of China
| | - Yangyang Zheng
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, 130000, People's Republic of China
| | - Jinying Xu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, 130000, People's Republic of China
| | - Yi Hou
- Department of Regeneration Medicine, School of Pharmaceutical Science of Jilin University, Changchun, 130000, People's Republic of China.
| | - Guangfan Chi
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, 130000, People's Republic of China.
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