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Pant K, Sharma A, Menon SV, Ali H, Hassan Almalki W, Kaur M, Deorari M, Kazmi I, Mahajan S, Kalra H, Alzarea SI. Exploring ncRNAs in epilepsy: From oxidative stress regulation to therapy. Brain Res 2024; 1841:149089. [PMID: 38880410 DOI: 10.1016/j.brainres.2024.149089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/10/2024] [Accepted: 06/13/2024] [Indexed: 06/18/2024]
Abstract
Epilepsy is a prevalent neurological illness which is linked with high worldwide burdens. Oxidative stress (OS) is recognized to be among the contributors that trigger the advancement of epilepsy, affecting neuronal excitability and synaptic transmission. Various types of non-coding RNAs (ncRNAs) are known to serve vital functions in many disease mechanisms, including epilepsy. The current review sought to understand better the mechanisms through which these ncRNAs regulate epilepsy's OS-related pathways. We investigated the functions of microRNAs in controlling gene expression at the post-translatory stage and their involvement in OS and neuroinflammation. We also looked at the different regulatory roles of long ncRNAs, including molecular scaffolding, enhancer, and transcriptional activator, during OS. Circular RNAs and their capability to act as miRNA decoys and their consequential impact on epilepsy development were also explored. Our review aimed to improve the current understanding of novel therapies for epilepsy based on the role of ncRNAs in OS pathways. We also demonstrated the roles of ncRNAs in epilepsy treatment and diagnosis, explaining that these molecules play vital roles that could be used in therapy as biomarkers.
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Affiliation(s)
- Kumud Pant
- Graphic Era (Deemed to be University), Clement Town Dehradun, 248002, India; Graphic Era Hill University Clement Town Dehradun, 248002, India
| | - Aanchal Sharma
- Chandigarh Pharmacy College, Chandigarh Group of Colleges, Jhanjheri, Mohali 140307, Punjab, India
| | - Soumya V Menon
- Department of Biotechnology and Genetics, Jain (Deemed-to-be) University, Bengaluru, Karnataka 560069, India; Department of Allied Healthcare and Sciences, Vivekananda Global University, Jaipur, Rajasthan 303012, India
| | - Haider Ali
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, India; Department of Pharmacology, Kyrgyz State Medical College, Bishkek, Kyrgyzstan.
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mandeep Kaur
- Department of Sciences, Vivekananda Global University, Jaipur, Rajasthan 303012, India
| | - Mahamedha Deorari
- School of Basic & Applied Sciences, Shobhit University, Gangoh, Uttar Pradesh-247341, India; Department of Health & Allied Sciences, Arka Jain University, Jamshedpur, Jharkhand- 831001, India
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, 21589, Jeddah, Saudi Arabia
| | - Shriya Mahajan
- Centre of Research Impact and Outcome, Chitkara University, Rajpura 140417, Punjab, India
| | - Hitesh Kalra
- Chitkara Centre for Research and Development, Chitkara University, Himachal Pradesh 174103, India
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, 72341, Sakaka, Aljouf, Saudi Arabia
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2
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Yazarlou F, Lipovich L, Loeb JA. Emerging roles of long non-coding RNAs in human epilepsy. Epilepsia 2024; 65:1491-1511. [PMID: 38687769 PMCID: PMC11166529 DOI: 10.1111/epi.17937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 05/02/2024]
Abstract
Genome-scale biological studies conducted in the post-genomic era have revealed that two-thirds of human genes do not encode proteins. Most functional non-coding RNA transcripts in humans are products of long non-coding RNA (lncRNA) genes, an abundant but still poorly understood class of human genes. As a result of their fundamental and multitasking regulatory roles, lncRNAs are associated with a wide range of human diseases, including neurological disorders. Approximately 40% of lncRNAs are specifically expressed in the brain, and many of them exhibit distinct spatiotemporal patterns of expression. Comparative genomics approaches have determined that 65%-75% of human lncRNA genes are primate-specific and hence can be posited as a contributing potential cause of the higher-order complexity of primates, including human, brains relative to those of other mammals. Although lncRNAs present important mechanistic examples of epileptogenic functions, the human/primate specificity of lncRNAs questions their relevance in rodent models. Here, we present an in-depth review that supports the contention that human lncRNAs are direct contributors to the etiology and pathogenesis of human epilepsy, as a means to accelerate the integration of lncRNAs into clinical practice as potential diagnostic biomarkers and therapeutic targets. Meta-analytically, the major finding of our review is the commonality of lncRNAs in epilepsy and cancer pathogenesis through mitogen-activated protein kinase (MAPK)-related pathways. In addition, neuroinflammation may be a relevant part of the common pathophysiology of cancer and epilepsy. LncRNAs affect neuroinflammation-related signaling pathways such as nuclear factor kappa- light- chain- enhancer of activated B cells (NF-κB), Notch, and phosphatidylinositol 3- kinase/ protein kinase B (Akt) (PI3K/AKT), with the NF-κB pathway being the most common. Besides the controversy over lncRNA research in non-primate models, whether neuroinflammation is triggered by injury and/or central nervous system (CNS) toxicity during epilepsy modeling in animals or is a direct consequence of epilepsy pathophysiology needs to be considered meticulously in future studies.
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Affiliation(s)
- Fatemeh Yazarlou
- Center for Childhood Cancer, Abigail Wexner Research Institute, Nationwide Children’s Hospital, Columbus, OH, U.S.A
| | - Leonard Lipovich
- Shenzhen Huayuan Biological Science Research Institute, Shenzhen Huayuan Biotechnology Co. Ltd., 601 Building C1, Guangming Science Park, Fenghuang Street, 518000, Shenzhen, Guangdong, People’s Republic of China
- College of Science, Mathematics, and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai District, 325060, Wenzhou, Zhejiang, People’s Republic of China
- Center for Molecular Medicine and Genetics, School of Medicine, Wayne State University, 3222 Scott Hall, 540 E. Canfield St., Detroit, Michigan 48201, U.S.A
| | - Jeffrey A. Loeb
- Department of Neurology and Rehabilitation, University of Illinois at Chicago, Chicago, Illinois 60612, U.S.A
- University of Illinois NeuroRepository, University of Illinois at Chicago, Chicago, Illinois 60612, U.S.A
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3
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Chen S, Huang M, Xu D, Li M. Epigenetic regulation in epilepsy: A novel mechanism and therapeutic strategy for epilepsy. Neurochem Int 2024; 173:105657. [PMID: 38145842 DOI: 10.1016/j.neuint.2023.105657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/02/2023] [Accepted: 12/14/2023] [Indexed: 12/27/2023]
Abstract
Epilepsy is a common neurological disorder characterized by recurrent seizures with excessive and abnormal neuronal discharges. Epileptogenesis is usually involved in neuropathological processes such as ion channel dysfunction, neuronal injury, inflammatory response, synaptic plasticity, gliocyte proliferation and mossy fiber sprouting, currently the pathogenesis of epilepsy is not yet completely understood. A growing body of studies have shown that epigenetic regulation, such as histone modifications, DNA methylation, noncoding RNAs (ncRNAs), N6-methyladenosine (m6A) and restrictive element-1 silencing transcription factor/neuron-restrictive silencing factor (REST/NRSF) are also involved in epilepsy. Through epigenetic studies, we found that the synaptic dysfunction, nerve damage, cognitive dysfunction and brain development abnormalities are affected by epigenetic regulation of epilepsy-related genes in patients with epilepsy. However, the functional roles of epigenetics in pathogenesis and treatment of epilepsy are still to be explored. Therefore, profiling the array of genes that are epigenetically dysregulated in epileptogenesis is likely to advance our understanding of the mechanisms underlying the pathophysiology of epilepsy and may for the amelioration of these serious human conditions provide novel insight into therapeutic strategies and diagnostic biomarkers for epilepsy to improve serious human condition.
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Affiliation(s)
- Shuang Chen
- Department of Neurology, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Hubei University of Chinese Medicine, Wuhan, 430000, China
| | - Ming Huang
- Department of Neurology, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Hubei University of Chinese Medicine, Wuhan, 430000, China
| | - Da Xu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Man Li
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China.
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Han X, Wang H, Du F, Zeng X, Guo C. Nrf2 for a key member of redox regulation: A novel insight against myocardial ischemia and reperfusion injuries. Biomed Pharmacother 2023; 168:115855. [PMID: 37939614 DOI: 10.1016/j.biopha.2023.115855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/21/2023] [Accepted: 11/05/2023] [Indexed: 11/10/2023] Open
Abstract
Nuclear factor erythroid-2 related factor 2 (Nrf2), a nuclear transcription factor, modulates genes responsible for antioxidant responses against toxic and oxidative stress to maintain redox homeostasis and participates in varieties of cellular processes such as metabolism and inflammation during myocardial ischemia and reperfusion injuries (MIRI). The accumulation of reactive oxygen species (ROS) from damaged mitochondria, xanthine oxidase, NADPH oxidases, and inflammation contributes to depraved myocardial ischemia and reperfusion injuries. Considering that Nrf2 played crucial roles in antagonizing oxidative stress, it is reasonable to delve into the up or down-regulated molecular mechanisms of Nrf2 in the progression of MIRI to provide the possibility of new therapeutic medicine targeting Nrf2 in cardiovascular diseases. This review systematically describes the generation of ROS, the regulatory metabolisms of Nrf2 as well as several natural or synthetic compounds activating Nrf2 during MIRI, which might provide novel insights for the anti-oxidative stress and original ideas targeting Nrf2 for the prevention and treatment in cardiovascular diseases.
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Affiliation(s)
- Xuejie Han
- Cardiovascular Center, Beijing Tongren Hospital, Capital Medical University, No. 1 Dongjiaomin Lane, Dongcheng District, Beijing 100730, PR China
| | - Hongxia Wang
- Department of Physiology and Pathophysiology, Capital Medical University, No. 10 You An Men Wai Xi Tou Tiao, Fengtai District, Beijing 100069, PR China
| | - Fenghe Du
- Department of Geriatrics, Beijing Tiantan Hospital, Capital Medical University, No. 119 South 4th Ring West Road, Fengtai District, Beijing 100070, PR China
| | - Xiangjun Zeng
- Department of Physiology and Pathophysiology, Capital Medical University, No. 10 You An Men Wai Xi Tou Tiao, Fengtai District, Beijing 100069, PR China.
| | - Caixia Guo
- Cardiovascular Center, Beijing Tongren Hospital, Capital Medical University, No. 1 Dongjiaomin Lane, Dongcheng District, Beijing 100730, PR China.
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Hansen SN, Holm A, Kauppinen S, Klitgaard H. RNA therapeutics for epilepsy: An emerging modality for drug discovery. Epilepsia 2023; 64:3113-3129. [PMID: 37703096 DOI: 10.1111/epi.17772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/04/2023] [Accepted: 09/11/2023] [Indexed: 09/14/2023]
Abstract
Drug discovery in epilepsy began with the finding of potassium bromide by Sir Charles Locock in 1857. The following century witnessed the introduction of phenotypic screening tests for discovering antiseizure medications (ASMs). Despite the high success rate of developing ASMs, they have so far failed in eliminating drug resistance and in delivering disease-modifying treatments. This emphasizes the need for new drug discovery strategies in epilepsy. RNA-based drugs have recently shown promise as a new modality with the potential of providing disease modification and counteracting drug resistance in epilepsy. RNA therapeutics can be directed either toward noncoding RNAs, such as microRNAs, long noncoding RNAs (ncRNAs), and circular RNAs, or toward messenger RNAs. The former show promise in sporadic, nongenetic epilepsies, as interference with ncRNAs allows for modulation of entire disease pathways, whereas the latter seem more promising in monogenic childhood epilepsies. Here, we describe therapeutic strategies for modulating disease-associated RNA molecules and highlight the potential of RNA therapeutics for the treatment of different patient populations such as sporadic, drug-resistant epilepsy, and childhood monogenic epilepsies.
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Affiliation(s)
| | - Anja Holm
- Department of Clinical Medicine, Center for RNA Medicine, Aalborg University, Copenhagen, Denmark
| | - Sakari Kauppinen
- Department of Clinical Medicine, Center for RNA Medicine, Aalborg University, Copenhagen, Denmark
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Deng RM, Zhou J. The role of PI3K/AKT signaling pathway in myocardial ischemia-reperfusion injury. Int Immunopharmacol 2023; 123:110714. [PMID: 37523969 DOI: 10.1016/j.intimp.2023.110714] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 07/09/2023] [Accepted: 07/24/2023] [Indexed: 08/02/2023]
Abstract
Myocardial ischemia has a high incidence and mortality rate, and reperfusion is currently the standard intervention. However, reperfusion may lead to further myocardial damage, known as myocardial ischemia/reperfusion injury (MIRI). There are currently no effective clinical treatments for MIRI. The PI3K/Akt signaling pathway is involved in cardiovascular health and disease and plays an important role in reducing myocardial infarct size and restoring cardiac function after MIRI. Activation of the PI3K/Akt pathway provides myocardial protection through synergistic upregulation of antioxidant, anti-inflammatory, and autophagy activities and inhibition of mitochondrial dysfunction and cardiomyocyte apoptosis. Many studies have shown that PI3K/Akt has a significant protective effect against MIRI. Here, we reviewed the molecular regulation of PI3K/Akt in MIRI and summarized the molecular mechanism by which PI3K/Akt affects MIRI, the effects of ischemic preconditioning and ischemic postconditioning, and the role of related drugs or activators targeting PI3K/Akt in MIRI, providing novel insights for the formulation of myocardial protection strategies. This review provides evidence of the role of PI3K/Akt activation in MIRI and supports its use as a therapeutic target.
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Affiliation(s)
- Rui-Ming Deng
- Department of Anesthesiology, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province 341000, PR China; The Affiliated Ganzhou Hospital of Nanchang University, 16 Meiguan Avenue, Ganzhou, Jiangxi Province 341000, PR China
| | - Juan Zhou
- Department of thyroid and Breast Surgery, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province 341000, PR China; The Affiliated Ganzhou Hospital of Nanchang University, 16 Meiguan Avenue, Ganzhou, Jiangxi Province 341000, PR China.
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Cao T, Zhang S, Chen Q, Zeng C, Wang L, Jiao S, Chen H, Zhang B, Cai H. Long non-coding RNAs in schizophrenia: Genetic variations, treatment markers and potential targeted signaling pathways. Schizophr Res 2023; 260:12-22. [PMID: 37543007 DOI: 10.1016/j.schres.2023.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/19/2023] [Accepted: 07/23/2023] [Indexed: 08/07/2023]
Abstract
Schizophrenia (SZ), a complex and debilitating spectrum of psychiatric disorders, is now mainly attributed to multifactorial etiology that includes genetic and environmental factors. Long non-coding RNAs (lncRNAs) are gaining popularity as a way to better understand the comprehensive mechanisms beneath the clinical manifestation of SZ. Only in recent years has it been elucidated that mammalian genomes encode thousands of lncRNAs. Strikingly, roughly 30-40% of these lncRNAs are extensively expressed in different regions across the brain, which may be closely associated with SZ. The therapeutic and adverse effects of atypical antipsychotic drugs (AAPDs) are partially reflected by their role in the regulation of lncRNAs. This begs the question directly, do any lncRNAs exist as biomarkers for AAPDs treatment? Furthermore, we comprehend a range of mechanistic investigations that have revealed the regulatory roles for lncRNAs both involved in the brain and the periphery of SZ. More crucially, we also combine insights from a variety of signaling pathways to argue that lncRNAs probably play critical roles in SZ via their interactive downstream factors. This review provides a thorough understanding regarding dysregulation of lncRNAs, corresponding genetic alternations, as well as their potential regulatory roles in the pathology of SZ, which might help reveal useful therapeutic targets in SZ.
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Affiliation(s)
- Ting Cao
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - ShuangYang Zhang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qian Chen
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - CuiRong Zeng
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - LiWei Wang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - ShiMeng Jiao
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hui Chen
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan, China
| | - BiKui Zhang
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - HuaLin Cai
- Department of Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Institute of Clinical Pharmacy, Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
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Tian MQ, Li J, Shu XM, Lang CH, Chen J, Peng LY, Lei WT, Yang CJ. The increase of Nrf2 m6A modification induced by FTO downregulation promotes hippocampal neuron injury and aggravates the progression of epilepsy in a rat model. Synapse 2023; 77:e22270. [PMID: 37122072 DOI: 10.1002/syn.22270] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 02/02/2023] [Accepted: 03/27/2023] [Indexed: 05/02/2023]
Abstract
Epilepsy is a common chronic neurological disorder characterized by widespread neuronal death. The purpose of this study was to investigate the role of nuclear factor erythroid 2-related factor 2 (Nrf2) m6A methylation in epilepsy. To create epileptic models, the rats were given Lithium chloride and pilocarpine, and isolated primary rat hippocampal neurons were cultured in an Mg2+ -free medium. The frequency of seizures was recorded in the epilepsy group of rats. The functional tests included TUNEL, MTT, and flow cytometry. Mechanistically, RNA degradation assay, RNA immunoprecipitation, and methylated RNA immunoprecipitation were performed. In epileptic models, Nrf2 and fat mass and obesity-associated (FTO) levels were downregulated, whereas YT521-B homology (YTH) domain family protein 2 (YTHDF2) was upregulated. Additionally, in epileptic models, there was a rise in the m6A methylation level of Nrf2 mRNA. Overexpressing FTO increased cell viability and reduced apoptosis, but Nrf2 interference reversed these effects. Meanwhile, FTO overexpression decreased the m6A methylation of Nrf2 mRNA. Moreover, YTHDF2 bound to Nrf2 mRNA and decreased its stability. Furthermore, FTO overexpression reduced seizure frequency in rats and inhibited hippocampal neuron apoptosis via lowering the m6A methylation level of Nrf2 mRNA. Overexpressing FTO reduced m6A methylation of Nrf2 mRNA, increased cell viability, suppressed apoptosis, and slowed the progression of epileptic diseases, which is linked to YTHDF2 binding to m6A-modified Nrf2 and promoting its degradation, as well as downregulating Nrf2 expression in hippocampal neurons.
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Affiliation(s)
- Mao-Qiang Tian
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, China
| | - Juan Li
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, China
| | - Xiao-Mei Shu
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, China
| | - Chang-Hui Lang
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, China
| | - Jing Chen
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, China
| | - Long-Ying Peng
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, China
| | - Wen-Ting Lei
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, China
| | - Chang-Jian Yang
- Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pediatrics, Guizhou Children's Hospital, Zunyi, China
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The regulatory function of lncRNA and constructed network in epilepsy. Neurol Sci 2023; 44:1543-1554. [PMID: 36781564 DOI: 10.1007/s10072-023-06648-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/27/2023] [Indexed: 02/15/2023]
Abstract
BACKGROUND Epilepsy is a neurological disease characterized by neural network dysfunction. Although most reports indicate that the pathological process of epilepsy is related to inflammation, synaptic plasticity, cell apoptosis, and ion channel dysfunction, the underlying molecular mechanisms of epilepsy are not fully understood. METHODS This review summarizes the latest literature on the roles and characteristics of long noncoding RNAs (lncRNAs) in the pathogenesis of epilepsy. RESULTS lncRNAs are a class of long transcripts without protein-coding functions that perform important regulatory functions in various biological processes. lncRNAs are involved in the regulation of the pathological process of epilepsy and are abnormally expressed in both patients and animal models. This review provides an overview of research progress in epilepsy, the multifunctional features of lncRNAs, the lncRNA expression pattern related to epileptogenesis and status epilepticus, and the potential mechanisms for the two interactions contributing to epileptogenesis and progression. CONCLUSION lncRNAs can serve as new diagnostic markers and therapeutic targets for epilepsy in the future.
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Hyttinen JMT, Blasiak J, Kaarniranta K. Non-Coding RNAs Regulating Mitochondrial Functions and the Oxidative Stress Response as Putative Targets against Age-Related Macular Degeneration (AMD). Int J Mol Sci 2023; 24:ijms24032636. [PMID: 36768958 PMCID: PMC9917342 DOI: 10.3390/ijms24032636] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
Age-related macular degeneration (AMD) is an ever-increasing, insidious disease which reduces the quality of life of millions of elderly people around the world. AMD is characterised by damage to the retinal pigment epithelium (RPE) in the macula region of the retina. The origins of this multi-factorial disease are complex and still not fully understood. Oxidative stress and mitochondrial imbalance in the RPE are believed to be important factors in the development of AMD. In this review, the regulation of the mitochondrial function and antioxidant stress response by non-coding RNAs (ncRNAs), newly emerged epigenetic factors, is discussed. These molecules include microRNAs, long non-coding RNAs, and circular non-coding RNAs. They act mainly as mRNA suppressors, controllers of other ncRNAs, or by interacting with proteins. We include here examples of these RNA molecules which affect various mitochondrial processes and antioxidant signaling of the cell. As a future prospect, the possibility to manipulate these ncRNAs to strengthen mitochondrial and antioxidant response functions is discussed. Non-coding RNAs could be used as potential diagnostic markers for AMD, and in the future, also as therapeutic targets, either by suppressing or increasing their expression. In addition to AMD, it is possible that non-coding RNAs could be regulators in other oxidative stress-related degenerative diseases.
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Affiliation(s)
- Juha M. T. Hyttinen
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
- Correspondence:
| | - Janusz Blasiak
- Department of Molecular Genetics, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Kai Kaarniranta
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
- Department of Ophthalmology, Kuopio University Hospital, P.O. Box 100, FI-70029 Kuopio, Finland
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Ghafouri-Fard S, Hussen BM, Jamali E, Branicki W, Taheri M, Akbari Dilmaghani N. Role of lncRNAs and circRNAs in epilepsy. Ageing Res Rev 2022; 82:101749. [PMID: 36216292 DOI: 10.1016/j.arr.2022.101749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/02/2022] [Accepted: 10/05/2022] [Indexed: 02/09/2023]
Abstract
Epilepsy is a chronic disorder of with a high prevalence and extensive health burden in almost all age groups of the population. This condition is resulted from disturbance in the balance between excitatory and inhibitory factors in the brain. Genetic elements that affect synaptic connectivity, receptors functions or ion channels have been shown to predispose individuals to the epilepsy. More recently, a body of evidence points to the role of non-coding part of the transcriptome in the pathology of epilepsy. Expression levels of NEAT1, H19, PVT1, ILF3-AS1, GAS5, ZFAS1, UCA1, MALAT1 and SNHG1 have been changed in epileptic patients or animal models of epilepsy. Moreover, circ_ANKMY2, circRNA-0067835 and circHivep2 are among circRNAs which are involved in the pathogenesis of epilepsy. Although the mechanistical impact of these transcripts in the pathogenesis of epilepsy has not been fully explored, disturbances in neuron plasticity, apoptosis or differentiation might be implicated in this process. Expression levels of lncRNAs can be used for discrimination of epileptic patients from normal controls or refractory patients from non-refractory ones. JAK/STAT, Wnt, PI3K/AKT and NF-κB signaling pathways are among the regulated pathways by lncRNAs in the context of epilepsy. In the present review, we summarize the role of lncRNAs and circRNAs in the pathogenesis of epilepsy.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq; Center of Research and Strategic Studies, Lebanese French University, Kurdistan Region, Erbil, Iraq
| | - Elena Jamali
- Department of Pathology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Wojciech Branicki
- Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Krakow, Poland
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Institute of Human Genetics, Jena University Hospital, Jena, Germany.
| | - Nader Akbari Dilmaghani
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Liu S, Fan M, Ma MD, Ge JF, Chen FH. Long non-coding RNAs: Potential therapeutic targets for epilepsy. Front Neurosci 2022; 16:986874. [PMID: 36278003 PMCID: PMC9582525 DOI: 10.3389/fnins.2022.986874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 09/16/2022] [Indexed: 11/13/2022] Open
Abstract
Epilepsy is a common and disastrous neurological disorder characterized by abnormal firing of neurons in the brain, affecting about 70 million people worldwide. Long non-coding RNAs (LncRNAs) are a class of RNAs longer than 200 nucleotides without the capacity of protein coding, but they participate in a wide variety of pathophysiological processes. Alternated abundance and diversity of LncRNAs have been found in epilepsy patients and animal or cell models, suggesting a potential role of LncRNAs in epileptogenesis. This review will introduce the structure and function of LncRNAs, summarize the role of LncRNAs in the pathogenesis of epilepsy, especially its linkage with neuroinflammation, apoptosis, and transmitter balance, which will throw light on the molecular mechanism of epileptogenesis, and accelerate the clinical implementation of LncRNAs as a potential therapeutic target for treatment of epilepsy.
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Affiliation(s)
- Sen Liu
- School of Pharmacy, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Hefei, China
| | - Min Fan
- School of Pharmacy, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Hefei, China
| | - Meng-Die Ma
- School of Pharmacy, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Hefei, China
| | - Jin-Fang Ge
- School of Pharmacy, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Hefei, China
- *Correspondence: Jin-Fang Ge,
| | - Fei-Hu Chen
- School of Pharmacy, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China
- Anhui Provincial Laboratory of Inflammatory and Immunity Disease, Hefei, China
- Fei-Hu Chen,
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13
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Wang T, Zhou T, Xu M, Wang S, Wu A, Zhang M, Zhou YL, Shi J. Platelet membrane-camouflaged nanoparticles carry microRNA inhibitor against myocardial ischaemia‒reperfusion injury. J Nanobiotechnology 2022; 20:434. [PMID: 36195952 PMCID: PMC9531416 DOI: 10.1186/s12951-022-01639-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/18/2022] [Indexed: 12/04/2022] Open
Abstract
The incidence of myocardial ischaemia‒reperfusion injury (MIRI) is increasing every year, and there is an urgent need to develop new therapeutic approaches. Nrf2 is thought to play a protective role during MIRI and it is regulated by microRNAs (miRNAs). This study focused on PLGA nanoparticles camouflaged by platelet membrane vesicles (PMVs) (i.e., PMVs@PLGA complexes) carrying microRNA inhibitors, which regulate Nrf2 and can play a therapeutic role in the MIRI process. In vitro and in vivo characterization showed that PMVs@PLGA has excellent transfection efficiency, low toxicity and good targeting. MicroRNAs that effectively regulate Nrf2 were identified, and then PMVs@PLGA-miRNA complexes were prepared and used for in vitro and in vivo treatment. PMVs@PLGA-miRNA complexes can effectively target the delivery of inhibitors to cardiomyocytes. Our results suggest that PMVs@PLGA complexes are a novel delivery system and a novel biological approach to the treatment of MIRI.
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Affiliation(s)
- Tianyi Wang
- Nantong Key Laboratory of Translational Medicine in Cardiothoracic Diseases, and Research Institution of Translational Medicine in Cardiothoracic Diseases, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China.,Department of Thoracic Surgery, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China
| | - Tingting Zhou
- Nantong Key Laboratory of Translational Medicine in Cardiothoracic Diseases, and Research Institution of Translational Medicine in Cardiothoracic Diseases, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China.,Department of Thoracic Surgery, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China
| | - Mingming Xu
- Nantong Key Laboratory of Translational Medicine in Cardiothoracic Diseases, and Research Institution of Translational Medicine in Cardiothoracic Diseases, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China.,Department of Thoracic Surgery, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China
| | - Shuo Wang
- Nantong Key Laboratory of Translational Medicine in Cardiothoracic Diseases, and Research Institution of Translational Medicine in Cardiothoracic Diseases, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China.,Department of Thoracic Surgery, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China
| | - Anqi Wu
- Nantong Key Laboratory of Translational Medicine in Cardiothoracic Diseases, and Research Institution of Translational Medicine in Cardiothoracic Diseases, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China.,Department of Thoracic Surgery, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China
| | - Mingyang Zhang
- Department of Forensic Sciences, Soochow University, NO.178, Ganjiang Road, Suzhou, 215000, Jiangsu, China.
| | - You Lang Zhou
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China.
| | - Jiahai Shi
- Nantong Key Laboratory of Translational Medicine in Cardiothoracic Diseases, and Research Institution of Translational Medicine in Cardiothoracic Diseases, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China. .,Department of Thoracic Surgery, Affiliated Hospital of Nantong University, NO.20, Xisi Road, Nantong, 226001, Jiangsu, China. .,School of Public Health, Nantong University, NO.9, Seyuan Road, Nantong, 226019, Jiangsu, China.
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14
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Gao X, Cao Z, Tan H, Li P, Su W, Wan T, Guo W. LncRNA, an Emerging Approach for Neurological Diseases Treatment by Regulating Microglia Polarization. Front Neurosci 2022; 16:903472. [PMID: 35860297 PMCID: PMC9289270 DOI: 10.3389/fnins.2022.903472] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 06/06/2022] [Indexed: 12/12/2022] Open
Abstract
Neurological disorders cause untold human disability and death each year. For most neurological disorders, the efficacy of their primary treatment strategies remains suboptimal. Microglia are associated with the development and progression of multiple neurological disorders. Targeting the regulation of microglia polarization has emerged as an important therapeutic strategy for neurological disorders. Their pro-inflammatory (M1)/anti-inflammatory (M2) phenotype microglia are closely associated with neuronal apoptosis, synaptic plasticity, blood-brain barrier integrity, resistance to iron death, and astrocyte regulation. LncRNA, a recently extensively studied non-coding transcript of over 200 nucleotides, has shown great value to intervene in microglia polarization. It can often participate in gene regulation of microglia by directly regulating transcription or sponging downstream miRNAs, for example. Through proper regulation, microglia can exert neuroprotective effects, reduce neurological damage and improve the prognosis of many neurological diseases. This paper reviews the progress of research linking lncRNAs to microglia polarization and neurological diseases.
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Affiliation(s)
- Xiaoyu Gao
- Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Zilong Cao
- Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Haifeng Tan
- Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Peiling Li
- Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Wenen Su
- Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Teng Wan
- Sports Medicine Department, Huazhong University of Science and Technology Union Shenzhen Hospital, The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
- Hengyang Medical College, University of South China, Hengyang, Hunan, China
- Teng Wan,
| | - Weiming Guo
- Sports Medicine Department, Huazhong University of Science and Technology Union Shenzhen Hospital, The 6th Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
- *Correspondence: Weiming Guo,
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15
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Zhao CS, Liu DX, Fan YH, Wu JK. LncRNA GAS5 promotes epilepsy progression through the epigenetic repression of miR-219, in turn affecting CaMKIIγ/NMDAR pathway. J Neurogenet 2022; 36:32-42. [PMID: 35642561 DOI: 10.1080/01677063.2022.2067536] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
It has been widely reported that dysregulated long-chain noncoding RNAs (lncRNAs) are closely associated with epilepsy. This study aimed to probe the function of lncRNA growth arrest-specific 5 (GAS5), microRNA (miR)-219 and Calmodulin-dependent protein kinase II (CaMKII)γ/N-methyl-D-aspartate receptor (NMDAR) pathway in epilepsy. Epileptic cell and animal models were constructed using magnesium deficiency treatment and diazepam injection, respectively. GAS5 and miR-219 expressions in epileptic cell and animal models were determined using qRT-PCR assay. The protein levels of CaMKIIγ, NMDAR and apoptosis-related proteins levels were assessed by western blot. Cell counting kit-8 (CCK-8) assay was employed to determine cell proliferation. Besides, TNFα, IL-1β, IL-6 and IL-8 levels were analyzed using enzyme-linked immunosorbent assay (ELISA). Furthermore, cell apoptosis was evaluated using TUNEL staining and flow cytometric analysis. Finally, the binding relationship between GAS5 and EZH2 was verified using RIP and ChIP assay. Our results revealed that GAS5 was markedly upregulated in epileptic cell and animal models, while miR-219 was down-regulated. GAS5 knockdown dramatically increased cell proliferation of epileptic cells, whereas suppressed inflammation and the apoptosis. Furthermore, our results showed that GAS5 epigenetically suppressed transcriptional miR-219 expression via binding to EZH2. miR-219 mimics significantly enhanced cell proliferation of epileptic cells, while inhibited inflammation and the apoptosis, which was neutralized by CaMKIIγ overexpression. Finally, miR-219 inhibition reversed the effects of GAS5 silence on epileptic cells, which was eliminated by CaMKIIγ inhibition. In conclusion, GAS5 affected inflammatory response and cell apoptosis of epilepsy via inhibiting miR-219 and further regulating CaMKIIγ/NMDAR pathway (See graphic summary in Supplementary Material).
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Affiliation(s)
- Chen-Sheng Zhao
- Department of Neurology, Shanxi Cardiovascular Hospital, Taiyuan, P. R. China
| | - Dong-Xing Liu
- Department of Neurology, Shanxi Cardiovascular Hospital, Taiyuan, P. R. China
| | - Yan-Huai Fan
- Department of Neurology, Shanxi Cardiovascular Hospital, Taiyuan, P. R. China
| | - Jian-Kun Wu
- Department of Neurology, Shanxi Cardiovascular Hospital, Taiyuan, P. R. China
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16
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Deng B, Zhang Z, Zhou H, Zhang X, Niu S, Yan X, Yan J. MicroRNAs in Methamphetamine-Induced Neurotoxicity and Addiction. Front Pharmacol 2022; 13:875666. [PMID: 35496314 PMCID: PMC9046672 DOI: 10.3389/fphar.2022.875666] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 03/31/2022] [Indexed: 12/21/2022] Open
Abstract
Methamphetamine (METH) abuse remains a significant public health concern globally owing to its strong addictive properties. Prolonged abuse of the drug causes irreversible damage to the central nervous system. To date, no efficient pharmacological interventions are available, primarily due to the unclear mechanisms underlying METH action in the brain. Recently, microRNAs (miRNAs) have been identified to play critical roles in various cellular processes. The expression levels of some miRNAs are altered after METH administration, which may influence the transcription of target genes to regulate METH toxicity or addiction. This review summarizes the miRNAs in the context of METH use, discussing their role in the reward effect and neurotoxic sequelae. Better understanding of the molecular mechanisms involved in METH would be helpful for the development of new therapeutic strategies in reducing the harm of the drug.
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Affiliation(s)
- Bi Deng
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Zhirui Zhang
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
| | - Huixuan Zhou
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Xinran Zhang
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
| | - Shuliang Niu
- School of Basic Medical Science, Xinjiang Medical University, Urumqi, China
| | - Xisheng Yan
- Department of Cardiovascular Medicine, Wuhan Third Hospital and Tongren Hospital of Wuhan University, Wuhan, China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, China
- School of Basic Medical Science, Xinjiang Medical University, Urumqi, China
- *Correspondence: Jie Yan,
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17
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Cai M, Lin W. The Function of NF-Kappa B During Epilepsy, a Potential Therapeutic Target. Front Neurosci 2022; 16:851394. [PMID: 35360161 PMCID: PMC8961383 DOI: 10.3389/fnins.2022.851394] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 02/22/2022] [Indexed: 01/04/2023] Open
Abstract
The transcriptional regulator nuclear factor kappa B (NF-κB) modulates cellular biological activity by binding to promoter regions in the nucleus and transcribing various protein-coding genes. The NF-κB pathway plays a major role in the expressing genes related to inflammation, including chemokines, interleukins, and tumor necrosis factor. It also transcribes genes that can promote neuronal survival or apoptosis. Epilepsy is one of the most common brain disorders and it not only causes death worldwide but also affects the day-to-day life of affected individuals. While epilepsy has diverse treatment options, there remain patients who are not sensitive to the existing treatment methods. Recent studies have implicated the critical role of NF-κB in epilepsy. It is upregulated in neurons, glial cells, and endothelial cells, due to neuronal loss, glial cell proliferation, blood-brain barrier dysfunction, and hippocampal sclerosis through the glutamate and γ-aminobutyric acid imbalance, ion concentration changes, and other mechanisms. In this review, we summarize the functional changes caused by the upregulation of NF-κB in the central nervous system during different periods after seizures. This review is the first to deconvolute the complicated functions of NF-κB, and speculate that the regulation of NF-κB can be a safe and effective treatment strategy for epilepsy.
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18
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Wang Y, Wei P, Yan F, Luo Y, Zhao G. Animal Models of Epilepsy: A Phenotype-oriented Review. Aging Dis 2022; 13:215-231. [PMID: 35111370 PMCID: PMC8782545 DOI: 10.14336/ad.2021.0723] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 07/23/2021] [Indexed: 12/26/2022] Open
Abstract
Epilepsy is a serious neurological disorder characterized by abnormal, recurrent, and synchronous discharges in the brain. Long-term recurrent seizure attacks can cause serious damage to brain function, which is usually observed in patients with temporal lobe epilepsy. Controlling seizure attacks is vital for the treatment and prognosis of epilepsy. Animal models, such as the kindling model, which was the most widely used model in the past, allow the understanding of the potential epileptogenic mechanisms and selection of antiepileptic drugs. In recent years, various animal models of epilepsy have been established to mimic different seizure types, without clear merits and demerits. Accordingly, this review provides a summary of the views mentioned above, aiming to provide a reference for animal model selection.
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Affiliation(s)
- Yilin Wang
- 2Institute of Cerebrovascular Diseases Research and Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Penghu Wei
- 1Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing, China.,4Clinical Research Center for Epilepsy Capital Medical University, Beijing, China
| | - Feng Yan
- 2Institute of Cerebrovascular Diseases Research and Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yumin Luo
- 2Institute of Cerebrovascular Diseases Research and Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,3Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China.,4Clinical Research Center for Epilepsy Capital Medical University, Beijing, China
| | - Guoguang Zhao
- 1Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing, China.,3Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China.,4Clinical Research Center for Epilepsy Capital Medical University, Beijing, China
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19
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Yu S, Gu Y, Wang T, Mu L, Wang H, Yan S, Wang A, Wang J, Liu L, Shen H, Na M, Lin Z. Study of Neuronal Apoptosis ceRNA Network in Hippocampal Sclerosis of Human Temporal Lobe Epilepsy by RNA-Seq. Front Neurosci 2021; 15:770627. [PMID: 34867172 PMCID: PMC8633546 DOI: 10.3389/fnins.2021.770627] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 10/22/2021] [Indexed: 12/23/2022] Open
Abstract
Hippocampal sclerosis (HS) is one of the most common pathological type of intractable temporal lobe epilepsy (TLE), often characterized by hippocampal atrophy, neuronal apoptosis, and gliogenesis. However, the molecular mechanisms of neuronal apoptosis in patients with HS are still not fully understood. We therefore conducted a pilot study focusing on the neuronal apoptosis ceRNA network in the sclerotic hippocampus of intractable TLE patients. In this research, RNA sequencing (RNA-seq) was utilized to quantify the expression levels of lncRNAs, miRNAs, and mRNAs in TLE patients with HS (HS-TLE) and without HS (non-HS-TLE), and reverse transcription-quantitative PCR (qRT-PCR). The interactions of differential expression (DE) lncRNAs-miRNAs or DEmiRNAs-mRNAs were integrated by StarBase v3.0, and visualized using Cytoscape. Subsequently, we annotate the functions of lncRNA-associated competitive endogenous RNA (ceRNA) network through analysis of their interactions with mRNAs. RNA-seq analyses showed 381 lncRNAs, 42 miRNAs, and 457 mRNAs were dysregulated expression in HS-TLE compared to non-HS-TLE. According to the ceRNA hypothesis, 5 HS-specific ceRNA network were constructed. Among them, the core ceRNA regulatory network involved in neuronal apoptosis was constituted by 10 DElncRNAs (CDKN2B-AS1, MEG3, UBA6-AS1, etc.), 7 DEmiRNAs (hsa-miR-155-5p, hsa-miR-195-5p, hsa-miR-200c-3p, etc.), and 3 DEmRNAs (SCN2A, DYRK2, and MAPK8), which belonging to apoptotic and epileptic terms. Our findings established the first ceRNA network of lncRNA-mediated neuronal apoptosis in HS-TLE based on transcriptome sequencing, which provide a new perspective on the disease pathogenesis and precise treatments of HS.
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Affiliation(s)
- Shengkun Yu
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Yifei Gu
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Tianyu Wang
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Long Mu
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Haiyang Wang
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Shi Yan
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Aoweng Wang
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Jiabin Wang
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Li Liu
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Hong Shen
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Meng Na
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Zhiguo Lin
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China
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Cui N, Liang Y, Wang J, Liu B, Wei B, Zhao Y. Minocycline attenuates oxidative and inflammatory injury in a intestinal perforation induced septic lung injury model via down-regulating lncRNA MALAT1 expression. Int Immunopharmacol 2021; 100:108115. [PMID: 34562841 DOI: 10.1016/j.intimp.2021.108115] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/19/2021] [Accepted: 08/28/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND Oxidative stress and inflammatory responses play an important role in acute lung injury (ALI). Although minocycline (MINO) has anti-inflammatory effects and is a promising candidate in treating inflammatory diseases, the effect of MINO on ALI during sepsis is still unclear. METHODS In the present study, a mouse model with intestinal perforation was established. C57BL/6 mice received cecal ligation and puncture (CLP) to induce sepsis-associated ALI. MINO was used to treat the mice via intraperitoneal injection at different doses (negative control, 20 mg/kg, 50 mg/kg and 100 mg/kg, respectively) 24 h after CLP. The severity of lung injury was evaluated by pathological examination, and lung wet / dry weight ratio was calculated to evaluate the severity of pulmonary edema. The changes of TNF-α, IL-1β, IL-6, PGE2, MDA, NF-κB, Nrf2, Keap1 and lncRNA MALAT1 levels in lung tissues of the mice were detected with ELISA, chemical colorimetry, Western blot or qRT-PCR. RESULTS MINO ameliorated the lung edema and lung injury of the mice induced by CLP in a dose-dependent manner. MINO administration could significantly down-regulate expressions of TNF-α, IL-6, IL-1β, PGE2 and MDA in lung tissues of the mice. Mechanistically, MINO exerted the effects of anti-inflammation and anti-oxidative stress through down-regulating the expression of MALAT1 and regulating Nrf2/Keap1 and NF-κB signaling pathways. CONCLUSION MINO represses oxidative stress and inflammatory response during sepsis-induced ALI via down-regulating MALAT1 expression, and it has the potential to treat septic ALI.
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Affiliation(s)
- Ning Cui
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province 430070, China
| | - Yong Liang
- Emergency Medicine Clinical Research Center, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing 100043, China
| | - Junyu Wang
- Emergency Medicine Clinical Research Center, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing 100043, China
| | - Bo Liu
- Emergency Medicine Clinical Research Center, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing 100043, China
| | - Bing Wei
- Emergency Medicine Clinical Research Center, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing 100043, China
| | - Yu Zhao
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province 430070, China.
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21
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Shao LL, Gao MM, Gong JX, Yang LY. DUSP1 regulates hippocampal damage in epilepsy rats via ERK1/2 pathway. J Chem Neuroanat 2021; 118:102032. [PMID: 34562585 DOI: 10.1016/j.jchemneu.2021.102032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 09/03/2021] [Accepted: 09/19/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To investigate the effects of DUSP1 on the hippocampal injury of young rats with epilepsy (EP) through mediating ERK1/2 signaling pathway. METHODS Young SD rats were selected and divided into Control, EP, EP + LV-GFP, EP + LV-DUSP1, EP + LV-siDUSP1, and EP + LV-siDUSP1 + U0126 groups. Morris Water Maze Test was used to detect the spatial learning and memory. Nissl staining and TUNEL staining were conducted and the inflammatory factors and oxidative stress-related indicators were also measured. Western blotting was utilized to detect the expression of DUSP1 and ERK1/2 pathway. EP cell model was constructed in vitro to verify the in vivo results. RESULTS Compared with Control group, young rats in EP group had decreased spatial learning and memory abilities and increased apoptotic rate and decreased number of Nissl positive cells. Besides, the up-regulated levels in inflammatory factors (IL-1β, IL-6), MDA content, and p-ERK1/2/ERK1/2 protein expression, as well as the down-regulated levels in DUSP1 protein expression and SOD content were also observed in EP rats. The EP rats treated with LV-DUSP1 showed obvious improvements regarding the above indicators, while those treated with LV-siDUSP1 had aggravated injury. But the effect of LV-siDUSP1 can be reversed by the treatment with ERK1/2 pathway inhibitor U0126. Further in vitro investigation verified the in vivo results. CONCLUSION DUSP1 may ameliorate the oxidative stress and inflammatory injury, as well as improve spatial learning and memory abilities via inhibiting ERK1/2 pathway, eventually playing protective roles in hippocampal injury of young rats with EP.
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Affiliation(s)
- Li-Li Shao
- Department of Pediatric, Cangzhou Central Hospital, Cangzhou 061000, PR China.
| | - Miao-Miao Gao
- Department of Pediatric, Cangzhou Central Hospital, Cangzhou 061000, PR China
| | - Jing-Xin Gong
- Department of Pediatric, Cangzhou Central Hospital, Cangzhou 061000, PR China
| | - Li-Yong Yang
- Department of Diagnostic CT, Cangzhou Central Hospital Yanshan Branch, Cangzhou 061399, PR China
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22
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Bohosova J, Vajcner J, Jabandziev P, Oslejskova H, Slaby O, Aulicka S. MicroRNAs in the development of resistance to antiseizure drugs and their potential as biomarkers in pharmacoresistant epilepsy. Epilepsia 2021; 62:2573-2588. [PMID: 34486106 DOI: 10.1111/epi.17063] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 01/02/2023]
Abstract
Although many new antiseizure drugs have been developed in the past decade, approximately 30%-40% of patients remain pharmacoresistant. There are no clinical tools or guidelines for predicting therapeutic response in individual patients, leaving them no choice other than to try all antiseizure drugs available as they suffer debilitating seizures with no relief. The discovery of predictive biomarkers and early identification of pharmacoresistant patients is of the highest priority in this group. MicroRNAs (miRNAs), a class of short noncoding RNAs negatively regulating gene expression, have emerged in recent years in epilepsy, following a broader trend of their exploitation as biomarkers of various complex human diseases. We performed a systematic search of the PubMed database for original research articles focused on miRNA expression level profiling in patients with drug-resistant epilepsy or drug-resistant precilinical models and cell cultures. In this review, we summarize 17 publications concerning miRNAs as potential new biomarkers of resistance to antiseizure drugs and their potential role in the development of drug resistance or epilepsy. Although numerous knowledge gaps need to be filled and reviewed, and articles share some study design pitfalls, several miRNAs dysregulated in brain tissue and blood serum were identified independently by more than one paper. These results suggest a unique opportunity for disease monitoring and personalized therapeutic management in the future.
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Affiliation(s)
- Julia Bohosova
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Jiri Vajcner
- Department of Pediatric Neurology, Brno Epilepsy Center, University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Petr Jabandziev
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic.,Department of Pediatrics, University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Hana Oslejskova
- Department of Pediatric Neurology, Brno Epilepsy Center, University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Ondrej Slaby
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic.,Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Stefania Aulicka
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic.,Department of Pediatric Neurology, Brno Epilepsy Center, University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
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Liu SJ, Li ZQ, Wang XY, Liu F, Xiao ZM, Zhang DC. lncRNA UCA1 induced by SP1 and SP3 forms a positive feedback loop to facilitate malignant phenotypes of colorectal cancer via targeting miR-495. Life Sci 2021; 277:119569. [PMID: 33961855 DOI: 10.1016/j.lfs.2021.119569] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 12/01/2022]
Abstract
AIMS Long noncoding RNA (LncRNA) urothelial cancer associated 1 (UCA1) was dysregulated in colorectal cancers (CRC) and promoted tumor progression of CRC. The aims of this study are to further investigate the underlying mechanism. MAIN METHODS Short hairpin RNAs (shRNAs) were applied for gene knockdown. microRNA mimic and pcDNA-UCA1 plasmids were transfected for miR-495 and UCA1 overexpression, respectively. MTT was applied to determine cell viability and sensitivity of 5-fluorouracil (FU). Transwell assays were performed to evaluate cell migration/invasion. Angiogenesis was evaluated by tube formation. Western blotting and quantitative PCR were utilized for protein and mRNA detection, respectively. The interaction of UCA1, miR-495 and SP1/SP3 were explored by dual-luciferase assay. RNA pulldown was adopted to determine the UCA1/miR-495 interaction. KEY FINDINGS UCA1 was significantly upregulated in CRC tissues. UCA1 enhanced cell proliferation, migration/invasion, angiogenesis, epithelial-mesenchymal transition, and resistance to 5-FU in CRC cell lines. MiR-495 was inversely correlated to the expression of UCA1. The results indicated that UCA1 sponged miR-495, leading to the disinhibition of SP1/SP3 expression. SP1/SP3 induced the expression of DNA methyltransferases and, in turn, contributed to UCA1 mediated tumor-promoting actions. Reduction of SP1/SP3 exerted anti-cancer effects, which can be reversed by forced expression of UCA1. SIGNIFICANCE UCA1-miR-495-SP1/SP3 axis is dysregulated in CRC and contributed to malignant phenotypes of CRC. UCA1-SP1/SP3 may form a positive feedback loop in CRC.
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Affiliation(s)
- Shao-Jun Liu
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, PR China; Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Changsha 410013, Hunan Province, PR China
| | - Zhao-Qi Li
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, PR China; Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Changsha 410013, Hunan Province, PR China
| | - Xiao-Yan Wang
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, PR China; Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Changsha 410013, Hunan Province, PR China
| | - Fen Liu
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, PR China; Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Changsha 410013, Hunan Province, PR China
| | - Zhi-Ming Xiao
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, PR China; Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Changsha 410013, Hunan Province, PR China
| | - De-Cai Zhang
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, PR China; Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Changsha 410013, Hunan Province, PR China.
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Geng J, Zhao H, Liu X, Geng J, Gao Y, He B. MiR-101a-3p Attenuated Pilocarpine-Induced Epilepsy by Downregulating c-FOS. Neurochem Res 2021; 46:1119-1128. [PMID: 33559830 DOI: 10.1007/s11064-021-03245-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/21/2020] [Accepted: 01/12/2021] [Indexed: 01/07/2023]
Abstract
This study aimed to explore the effects and function of microRNA-101a-3p (miR-101a-3p) in epilepsy. Rat model of pilocarpine-induced epilepsy was established and the seizure frequency was recorded. Expression of miR-101a-3p and c-Fos in hippocampus tissues of Rat models were detected by qRT-PCR and western blot. Besides, we established a hippocampal neuronal culture model of acquired epilepsy using Mg2+ free medium to evaluate the effects of miR-101a-3p and c-Fos in vitro. Cells were transfected with miR-101a-3p mimic, si-c-FOS, miR-101a-3p + c-FOS and its corresponding controls. MTT assay was used to detect cell viability upon transfection. Flow cytometry was performed to determine the apoptosis rate. Western blot was performed to measure the protein expression of apoptosis-related proteins (Bcl-2, Bax, and cleaved caspase 3), autophagy-related proteins (LC3 and Beclin1) and c-FOS. The targeting relationship between miR-101a-3p and c-FOS was predicted and verified by TargetScan software and dual-luciferase reporter assay. The role of miR-101a-3p was validated using epilepsy rat models in vivo. Another Rat models of pilocarpine-induced epilepsy with miR-NC or miR-101a-3p injection were established to evaluate the effect of miR-101a-3p overexpression on epilepsy in vivo. MiR-101a-3p was downregulated while c-FOS was increased in hippocampus tissues of Rat model of pilocarpine-induced epilepsy. Overexpression of miR-101a-3p or c-FOS depletion promoted cell viability, inhibited cell apoptosis and autophagy. C-FOS was a target of miR-101a-3p and miR-101a-3p negatively regulated c-FOS expression to function in epilepsy. Overexpression of miR-101a-3p attenuated pilocarpine-induced epilepsy in Rats in vivo. This study indicated that miR-101a-3p could attenuate pilocarpine-induced epilepsy by repressing c-Fos expression.
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Affiliation(s)
- Jiefeng Geng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China.
| | - Haibiao Zhao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China
| | - Xing Liu
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Junjie Geng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China
| | - Yuyuan Gao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China
| | - Bingzheng He
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China
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25
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Tian C, Gao L, Zucker IH. Regulation of Nrf2 signaling pathway in heart failure: Role of extracellular vesicles and non-coding RNAs. Free Radic Biol Med 2021; 167:218-231. [PMID: 33741451 PMCID: PMC8096694 DOI: 10.1016/j.freeradbiomed.2021.03.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/26/2021] [Accepted: 03/11/2021] [Indexed: 12/11/2022]
Abstract
The balance between pro- and antioxidant molecules has been established as an important driving force in the pathogenesis of cardiovascular disease. Chronic heart failure is associated with oxidative stress in the myocardium and globally. Redox balance in the heart and brain is controlled, in part, by antioxidant proteins regulated by the transcription factor Nuclear factor erythroid 2-related factor 2 (Nrf2), which is reduced in the heart failure state. Nrf2 can, in turn, be regulated by a variety of mechanisms including circulating microRNAs (miRNAs) encapsulated in extracellular vesicles (EVs) derived from multiple cell types in the heart. Here, we review the role of the Nrf2 and antioxidant enzyme signaling pathway in mediating redox balance in the myocardium and the brain in the heart failure state. This review focuses on Nrf2 and antioxidant protein regulation in the heart and brain by miRNA-enriched EVs in the setting of heart failure. We discuss EV-mediated intra- and inter-organ communications especially, communication between the heart and brain via an EV pathway that mediates cardiac function and sympatho-excitation in heart failure. Importantly, we speculate how engineered EVs with specific miRNAs or antagomirs may be used in a therapeutic manner in heart failure.
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Affiliation(s)
- Changhai Tian
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, 68198-5880, USA
| | - Lie Gao
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, 68198-5850, USA
| | - Irving H Zucker
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE, 68198-5850, USA.
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26
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Long Noncoding RNA H19 Overexpression Protects against Hypoxic-Ischemic Brain Damage by Inhibiting miR-107 and Up-Regulating Vascular Endothelial Growth Factor. THE AMERICAN JOURNAL OF PATHOLOGY 2021; 191:503-514. [PMID: 33608066 DOI: 10.1016/j.ajpath.2020.11.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 10/22/2020] [Accepted: 11/16/2020] [Indexed: 02/05/2023]
Abstract
Long noncoding RNAs play critical roles in cellular homeostasis, and long noncoding RNA H19 (H19) is implicated in several pathologic conditions. The putative role of H19 in the pathogenesis and progression of hypoxic-ischemic brain damage (HIBD) is not yet understood. Therefore, a series of in vivo and in vitro experiments were designed to investigate the potential roles of H19 in neuronal apoptosis and cognitive dysfunction in HIBD. H19 expression was decreased in HIBD rat models established by partial occlusion of carotid artery. H19 bound to and decreased the expression of miR-107, which also increased VEGF expression. H19 overexpression reduced neuronal apoptosis and alleviated cognitive dysfunction in HIBD rats. The up-regulation of miR-107 reversed the protective effects conferred by H19. In addition, the cell model of HIBD was established by oxygen-glucose deprivation in neuronal cells used. H19 overexpression in oxygen-glucose deprivation neurons increased B-cell lymphoma-2 and decreased B-cell lymphoma-2-associated X, total and cleaved caspase-3 expressions. Taken together, the results showed that H19 expresses at a low level in HIBD. H19 overexpression decreased miR-107 and increased VEGF expression, which resulted in repressed neuronal apoptosis and alleviated cognitive dysfunction. Thus, H19 may serve as a molecular target for translational research for HIBD therapy.
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27
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Long noncoding RNA NKILA transferred by astrocyte-derived extracellular vesicles protects against neuronal injury by upregulating NLRX1 through binding to mir-195 in traumatic brain injury. Aging (Albany NY) 2021; 13:8127-8145. [PMID: 33686956 PMCID: PMC8034961 DOI: 10.18632/aging.202618] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 08/22/2020] [Indexed: 01/21/2023]
Abstract
The study aims to investigate the effects of long noncoding RNA (lncRNA) transmitted nuclear factor-κB interacting lncRNA (NKILA)-containing astrocyte-derived small extracellular vesicles (EVs) on traumatic brain injury (TBI). TBI was modeled in vitro by exposing human neurons to mechanical injury and in vivo by controlled cortical impact in a mouse model. The gain- and loss-function approaches were conducted in injured neurons to explore the role of NKILA, microRNA-195 (miR-195) and nucleotide-binding leucine-rich repeat containing family member X1 (NLRX1) in neuronal injury. EVs extracted from NKILA-overexpressing astrocytes were used to treat injured neurons. It was revealed that NKILA was downregulated in injured neurons. Astrocyte co-culture participated in the upregulation of NKILA in injured neurons. Additionally, NKILA could competitively bind to miR-195 that directly targeted NLRX1. Next, the upregulation of NLRX1 or NKILA relived neuronal injury by promoting neuronal proliferation but inhibiting apoptosis. Astrocyte-derived EVs transferred NKILA into neurons, which led to the downregulation of miR-195, upregulation of NLRX1, increased cell proliferation, and decreased cell apoptosis. The in vivo experiments validated that NKILA-containing EVs promoted brain recovery following TBI. Collectively, astrocyte-derived EVs carrying NKILA was found to alleviate neuronal injury in TBI by competitively binding to miR-195 and upregulating NLRX1.
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28
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Zhang Y, Wang S, Li H, Xu X. miR-495 reduces neuronal cell apoptosis and relieves acute spinal cord injury through inhibiting PRDM5. J Mol Histol 2021; 52:385-396. [PMID: 33630203 DOI: 10.1007/s10735-021-09959-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 01/25/2021] [Indexed: 11/28/2022]
Abstract
This study aims to investigate the role of miR-495 in neuronal cell apoptosis after acute spinal cord injury (ASCI). The ASCI rat model was established and the Basso, Beattie, and Bresnahan (BBB) score was assessed. miR-495, PR domain containing 5 (PRDM5), and Bcl-2 expressions were measured by qRT-PCR or western blotting. Neuronal cell line PC-12 was subjected to hypoxia condition to simulate the in vitro ASCI model. PC-12 cell apoptosis was measured by flow cytometry, and the interaction between miR-495 and PRDM5 was confirmed by dual luciferase reporter assay. Results showed that BBB score was significantly decreased in ASCI rats compared with sham rats. miR-495 expression was down-regulated in spinal cord tissue of ASCI rats and hypoxia-induced PC-12 cells, and PRDM5 protein level was up-regulated in spinal cord tissue of ASCI rats and hypoxia-induced PC-12 cells. miR-495 overexpression could reduce apoptosis of PC-12 cells, and up-regulated anti-apoptosis protein Bcl-2 protein level. Moreover, PRDM5 was a target of miR-495, and mRNA and protein levels of PRDM5 were negatively regulated by miR-495. miR-495 overexpression could reduce the hypoxia-induced PC-12 cell apoptosis, while PRDM5 overexpression abolished this inhibiting effect. The agomir-495 was injected into ASCI rats, and Bcl-2 protein level and BBB score were increased, but the PRDM5 overexpression reversed these results. Overall, we concluded that miR-495 could inhibit neuronal cell apoptosis and relieve acute spinal cord injury through inhibiting PRDM5.
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Affiliation(s)
- Yan Zhang
- Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng, 475000, People's Republic of China
| | - Shanshan Wang
- Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng, 475000, People's Republic of China
| | - Hongli Li
- Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng, 475000, People's Republic of China
| | - Xia Xu
- Huaihe Hospital of Henan University, 115 Ximen Street, Kaifeng, 475000, People's Republic of China.
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29
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Zhang L, Wu X, Li Y, Teng X, Zou L, Yu B. LncRNA SNHG5 promotes cervical cancer progression by regulating the miR-132/SOX4 pathway. Autoimmunity 2021; 54:88-96. [PMID: 33622094 DOI: 10.1080/08916934.2020.1864731] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The long non-coding RNA (lncRNA) small nucleolar RNA host gene 5 (SNHG5) has been verified as a crucial regulator in many types of tumours but not clear in cervical cancer (CC). This study aims to investigate the effect and further mechanisms of lncRNA SNHG5 in CC. METHODS The expression of SNHG5 and miR-132, as well as SOX4 (sex-determining region Y-box 4) mRNA expression were determined by quantitative real-time PCR (qRT-PCR). The protein level of SOX4 and epithelial-mesenchymal transition (EMT)-related proteins were evaluated by western blot. Then, Edu and Transwell assay were performed to assess the proliferation, migration and invasion of CC cells. RNA immunoprecipitation (RIP) and RNA pull-down assay were conducted to explore the relationship between SNHG5 and miR-132. RESULTS SNHG5 and SOX4 were upregulated, and miR-132 was downregulated in CC tissues and cell lines. SNHG5 was positively correlated with FIGO stage (p = .003) and lymph node metastasis (p = .001). Pearson's correlation analysis conveyed that SNHG5 was positively correlated with SOX4, and miR-132 was negatively correlated with SOX4 and SNHG5. Knockdown of SNHG5 in vitro reduced CC cell proliferation, migration and invasion through regulating miR-132. Moreover, overexpression of miR-132 restrained CC cell proliferation, migration, and invasion through targeting SOX4, and SNHG5 enhanced SOX4 expression via negatively regulating miR-132. CONCLUSION SNHG5 promotes SOX4 expression to accelerate CC cell proliferation, migration and invasion through negatively regulating miR-132.
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Affiliation(s)
- Liqin Zhang
- Department of Laboratory, Jinhua People's Hospital, China
| | - Xiaoming Wu
- Department of Laboratory, Hangzhou Jianggan District People's Hospital, Hangzhou, China
| | - Yue Li
- Department of Laboratory, Jinhua People's Hospital, China
| | - Xianlin Teng
- Department of Laboratory, Jinhua People's Hospital, China
| | - Libo Zou
- Department of Laboratory, Jinhua People's Hospital, China
| | - Beiwei Yu
- Department of Laboratory, Hangzhou Jianggan District People's Hospital, Hangzhou, China
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30
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Jayasuriya R, Ramkumar KM. Role of long non-coding RNAs on the regulation of Nrf2 in chronic diseases. Life Sci 2021; 270:119025. [PMID: 33450255 DOI: 10.1016/j.lfs.2021.119025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/03/2021] [Accepted: 01/06/2021] [Indexed: 12/21/2022]
Abstract
Studies have identified dysregulated long non-coding RNA (lncRNA) in several diseases at transcriptional, translational, and post-translational levels. Although our mechanistic knowledge on the regulation of lncRNAs is still limited, one of the mechanisms of action attributed is binding and regulating transcription factors, thus controlling gene expression and protein function. One such transcription factor is nuclear factor erythroid 2-related factor 2 (Nrf2), which plays a critical biological role in maintaining cellular homeostasis at multiple levels in physiological and pathophysiological conditions. The levels of Nrf2 were found to be down-regulated in many chronic diseases, signifying that Nrf2 can be a key therapeutic target. Few lncRNAs like lncRNA ROR, ENSMUST00000125413, lncRNA ODRUL, Nrf2-lncRNA have been associated with the Nrf2 signaling pathway in response to various stimuli, including stress. This review discusses the regulation of Nrf2 in different responses and the potential role of specific lncRNA in modulating its transcriptional activities. This review further helps to enhance our knowledge on the regulatory role of the critical antioxidant transcription factor, Nrf2.
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Affiliation(s)
- Ravichandran Jayasuriya
- SRM Research Institute and Department of Biotechnology, School of bioengineering, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - Kunka Mohanram Ramkumar
- SRM Research Institute and Department of Biotechnology, School of bioengineering, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India.
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31
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Fabrizio FP, Sparaneo A, Muscarella LA. NRF2 Regulation by Noncoding RNAs in Cancers: The Present Knowledge and the Way Forward. Cancers (Basel) 2020; 12:cancers12123621. [PMID: 33287295 PMCID: PMC7761714 DOI: 10.3390/cancers12123621] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/23/2020] [Accepted: 11/30/2020] [Indexed: 02/06/2023] Open
Abstract
Simple Summary The NRF2 pathway represents one of the most intriguing pathways that promotes chemo- and radioresistance of neoplastic cells. Increasing findings suggest that the NRF2 signaling can be modulated by multiple epigenetic factors such as noncoding RNAs, which influence a large number of oncogenic mechanisms, both at transcriptional and at post-transcriptional levels. As a consequence, the identification and characterization of specific noncoding RNAs as biomarkers related to oxidative stress may help to clarify the relationship between them and NRF2 signaling in the tumor context, in terms of positive and negative modulation, also referring to their intersection with other NRF2 crosstalking pathways. In this review, we summarize the recent updates on NRF2 network regulation by noncoding RNAs in tumors, thus paving the way toward the potential translational role of these small RNAs as key tumor biomarkers of neoplastic processes. Abstract Nuclear factor erythroid 2-related factor 2 (NRF2) is the key transcription factor triggered by oxidative stress that moves in cells of the antioxidant response element (ARE)-antioxidant gene network against reactive oxygen species (ROS) cellular damage. In tumors, the NRF2 pathway represents one of the most intriguing pathways that promotes chemo- and radioresistance of neoplastic cells and its activity is regulated by genetic and epigenetic mechanisms; some of these being poorly investigated in cancer. The noncoding RNA (ncRNA) network is governed by microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) and modulates a variety of cellular mechanisms linked to cancer onset and progression, both at transcriptional and post-transcriptional levels. In recent years, the scientific findings about the effects of ncRNA landscape variations on NRF2 machines are rapidly increasing and need to be continuously updated. Here, we review the latest knowledge about the link between NRF2 and ncRNA networks in cancer, thus focusing on their potential translational significance as key tumor biomarkers.
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Khan H, Tundis R, Ullah H, Aschner M, Belwal T, Mirzaei H, Akkol EK. Flavonoids targeting NRF2 in neurodegenerative disorders. Food Chem Toxicol 2020; 146:111817. [PMID: 33069760 DOI: 10.1016/j.fct.2020.111817] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/11/2020] [Accepted: 10/12/2020] [Indexed: 02/05/2023]
Affiliation(s)
- Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan, 23200, Pakistan.
| | - Rosa Tundis
- Department of Pharmacy, Health and Nutritional Sciences University of Calabria, Via P. Bucci 87036 Rende (CS), Italy.
| | - Hammad Ullah
- Department of Pharmacy, Abdul Wali Khan University Mardan, 23200, Pakistan
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
| | - Tarun Belwal
- Centre for Biodiversity Conservation and Management, G.B. Plant National Institute of Himalayan Environment and Sustainable Development, Kosi-Katarmal, Almora, Uttarakhand, India.
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, I.R, Iran.
| | - Esra Kupeli Akkol
- Department of Pharmacognosy, Faculty of Pharmacy Gazi University 06330, Etiler/Ankara Turkey.
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Bhattacharjee S, Li J, Dashwood RH. Emerging crosstalk between long non-coding RNAs and Nrf2 signaling. Cancer Lett 2020; 490:154-164. [DOI: 10.1016/j.canlet.2020.07.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/08/2020] [Accepted: 07/11/2020] [Indexed: 12/17/2022]
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Shirvani Farsani Z, Zahirodin A, Ghaderian SMH, Shams J, Naghavi Gargari B. The role of long non-coding RNA MALAT1 in patients with bipolar disorder. Metab Brain Dis 2020; 35:1077-1083. [PMID: 32458337 DOI: 10.1007/s11011-020-00580-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 05/11/2020] [Indexed: 01/08/2023]
Abstract
Bipolar disorders are known as chronic, recurrent, and heterogenic diseases. Regarding, diagnosis and treatment of them are very complex. The molecular mechanism and pathophysiology of bipolar disorder are slightly known. Accordingly, long noncoding RNAs are considered as one of the main factors that are dysfunctional in many diseases such as the nervous system diseases. Hence, we aim to investigate the expression of two long non coding RNAs, MALAT1 and UCA1, in patients in bipolar disorder. The levels of MALAT1 and UCA1 lncRNA were evaluated in peripheral blood mononuclear cells (PBMCs) of 50 bipolar patients and 50 healthy controls with real-time PCR. Also, ROC curve analysis and correlation analysis were performed between the gene expression and some clinical features of bipolar individuals. The significant decline of MALAT1 expression level was found in the patients compared to controls; but no significant difference was observed in the UCA1 expression level between the patients and controls. Furthermore, computational analysis of CpG Islands and miRNAs binding sites on LncRNAs, MALAT1, and UCA1 was conducted. Also, The ROC curve area (AUC) of MALAT1 was 0.80. The current results suggest that the expression level of MALAT1 could serve as a potential diagnostic biomarker for bipolar patients.
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Affiliation(s)
- Zeinab Shirvani Farsani
- Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University G.C, Tehran, IR, Iran
| | - Alireza Zahirodin
- Behavioral Science Research Center, Shahid Beheshti University of Medical Sciences, Tehran, IR, Iran
| | | | - Jamal Shams
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, IR, Iran
| | - Bahar Naghavi Gargari
- Department of Basic Sciences, Faculty of Nursing & Midwifery, Shahid Beheshti University of Medical Sciences, IR, Tehran, Iran.
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35
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Cai X, Long L, Zeng C, Ni G, Meng Y, Guo Q, Chen Z, Li Z. LncRNA ILF3-AS1 mediated the occurrence of epilepsy through suppressing hippocampal miR-212 expression. Aging (Albany NY) 2020; 12:8413-8422. [PMID: 32404536 PMCID: PMC7244033 DOI: 10.18632/aging.103148] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 04/16/2020] [Indexed: 02/07/2023]
Abstract
Increased expression of some matrix metalloproteinases (MMPs) is closely associated with epilepsy. However, factors that promote their expression have not been clarified. Long noncoding RNAs (lncRNAs) play crucial roles in the development of human diseases, including various cancers, but its potential function in temporal lobe epilepsy (TLE) has remained unexplored. In this study, we showed that hippocampal and serum ILF3-AS1 levels are higher in TLE patients than in matched controls. Interleukin (IL)-1β and tumor necrosis factor (TNF)-α induced ILF3-AS1 expression in astrocytes, while ectopic expression of ILF3-AS1 enhanced IL-6 and TNF-α expression. Ectopic ILF3-AS1 in astrocytes also increased expression of MMP2, MMP3, MMP9 and MMP14, but suppressed expression of miR-212. Consistent with that finding, miR-212 levels were lower in the hippocampus and serum of TLE patients than their controls. This suggests that ILF3-AS1 promotes expression of inflammatory cytokines and MMPs by targeting miR-212 and that ILF3-AS1 plays a crucial role in the development of TLE.
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Affiliation(s)
- Xiaodong Cai
- Department of Neurology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Ling Long
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Chao Zeng
- Department of Pathology, The Eight Affiliated Hospital of Sun Yat-Sen University, Shenzhen, China
| | - Guanzhong Ni
- Department of Neurology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yangyang Meng
- Department of Neurology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Qiang Guo
- Department of Neurosurgery, Guangdong 999 Brain Hospital, Guangzhou, China
| | - Ziyi Chen
- Department of Neurology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Zhong Li
- Department of Neurology, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Yu Q, Zhao MW, Yang P. LncRNA UCA1 Suppresses the Inflammation Via Modulating miR-203-Mediated Regulation of MEF2C/NF-κB Signaling Pathway in Epilepsy. Neurochem Res 2020; 45:783-795. [DOI: 10.1007/s11064-019-02952-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 12/01/2019] [Accepted: 12/30/2019] [Indexed: 12/14/2022]
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Bertogliat MJ, Morris-Blanco KC, Vemuganti R. Epigenetic mechanisms of neurodegenerative diseases and acute brain injury. Neurochem Int 2020; 133:104642. [PMID: 31838024 PMCID: PMC8074401 DOI: 10.1016/j.neuint.2019.104642] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/25/2019] [Accepted: 12/09/2019] [Indexed: 12/22/2022]
Abstract
Epigenetic modifications are emerging as major players in the pathogenesis of neurodegenerative disorders and susceptibility to acute brain injury. DNA and histone modifications act together with non-coding RNAs to form a complex gene expression machinery that adapts the brain to environmental stressors and injury response. These modifications influence cell-level operations like neurogenesis and DNA repair to large, intricate processes such as brain patterning, memory formation, motor function and cognition. Thus, epigenetic imbalance has been shown to influence the progression of many neurological disorders independent of aberrations in the genetic code. This review aims to highlight ways in which epigenetics applies to several commonly researched neurodegenerative diseases and forms of acute brain injury as well as shed light on the benefits of epigenetics-based treatments.
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Affiliation(s)
- Mario J Bertogliat
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Kahlilia C Morris-Blanco
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA; William S. Middleton VA Hospital, Madison, WI, USA
| | - Raghu Vemuganti
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA; William S. Middleton VA Hospital, Madison, WI, USA.
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Wan Y, Yang ZQ. LncRNA NEAT1 affects inflammatory response by targeting miR-129-5p and regulating Notch signaling pathway in epilepsy. Cell Cycle 2020; 19:419-431. [PMID: 31948324 DOI: 10.1080/15384101.2020.1711578] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
It is crucial to understand the molecular mechanisms involved in epileptogenesis. This study aims to investigate the role of lncRNA NEAT1, miR-129-5p and Notch signaling pathway in epilepsy. In this research, temporal lobe tissues were collected from patients with epilepsy and healthy controls. The CTX-TNA cells were treated with IL-1β to establish as epilepsy cell model, which were then manipulated the expression level of NEAT1, miR-129-5p and Notch1 to investigate their roles in the epilepsy progression. The expression levels of RNA and protein in temporal lobe tissues and epilepsy cell model were determined by RT-qPCR, western blotting or ELISA, respectively. MTT assay was utilized to analyze the cell viability. Dual-luciferase reporter assay was used to explore the interaction relationship between lncRNA NEAT1, miR-129-5p and Notch1. Silencing NEAT1 significantly reduced the expression levels of IL-6, COX-2 and TNF-α in epilepsy cell model. The overexpression of NEAT1 suppressed the expression level of miR-129-5p. Inhibiting miR-129-5p significantly increased the expression of IL-6, COX-2, TNF-α and Notch1. Furthermore, the expression levels of IL-6, COX-2 and TNF-α were increased after overexpressing Notch1 in miR-129-5p mimics-treated cells. The expression levels of Notch1, JAG1, and HES1 were decreased after transfecting with sh-NEAT1. However, compared with sh-NEAT1 group, the expression levels of Notch1, JAG1, HES1, IL-6 and TNF-α were reversed by miR-129-5p inhibition or Notch1 overexpression. The present study verified that lncRNA NEAT1 affected inflammatory response of epilepsy by suppressing miR-129-5p and further regulating Notch signaling pathway in IL-1β-induced epilepsy cell model.Abbreviations: CNS: Central nervous system; lncRNAs: Long noncoding RNAs; NEAT1: Nuclear-enriched abundant transcript 1; miRNAs: MicroRNAs; ATCC: American Type Culture Collection; DMEM: Dulbecco's Modified Eagle Medium; FBS: Fetal bovine serum; ELISA: Enzyme-linked immunosorbent assay; RT-qPCR: Reverse transcription-quantitative polymerase chain reaction; SD: Standard deviation; ANOVA: Analysis of variance; LPS: Ligand lipopolysaccharide; GLO1: Glyoxalase I.
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Affiliation(s)
- Yi Wan
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Zhi-Quan Yang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
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Ashrafizadeh M, Ahmadi Z, Samarghandian S, Mohammadinejad R, Yaribeygi H, Sathyapalan T, Sahebkar A. MicroRNA-mediated regulation of Nrf2 signaling pathway: Implications in disease therapy and protection against oxidative stress. Life Sci 2020; 244:117329. [PMID: 31954747 DOI: 10.1016/j.lfs.2020.117329] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/12/2020] [Accepted: 01/15/2020] [Indexed: 12/15/2022]
Abstract
MicroRNAs (miRs) are small non-coding pieces of RNA that are involved in a variety of physiologic processes such as apoptosis, cell proliferation, cell differentiation, cell cycle and cell survival. These multifunctional nucleotides are also capable of preventing oxidative damages by modulating antioxidant defense systems in a variety of milieu, such as in diabetes. Although the exact molecular mechanisms by which miRs modulate the antioxidant defense elements are unclear, some evidence suggests that they may exert these effects via nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway. This intracellular mechanism is crucial in the maintenance of the physiologic redox balance by regulating the expression and activity of various cellular antioxidative defense elements and thereby plays a pivotal role in the development of oxidative stress. Any impairment in the Nrf2 signaling pathway may result in oxidative damage-dependent complications such as various diabetic complications, neurological disorders and cancer. In the current review, we discuss the modulatory effects of miRs on the Nrf2 signaling pathway, which can potentially be novel therapeutic targets.
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Affiliation(s)
- Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Zahra Ahmadi
- Department of Basic Science, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran
| | - Saeed Samarghandian
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Reza Mohammadinejad
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Habib Yaribeygi
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran.
| | - Thozhukat Sathyapalan
- Department of Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, Hull, UK
| | - Amirhossein Sahebkar
- Halal Research Center of IRI, FDA, Tehran, Iran; Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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Expression Analysis of lncRNAs in Refractory and Non-Refractory Epileptic Patients. J Mol Neurosci 2020; 70:689-698. [PMID: 31900886 DOI: 10.1007/s12031-019-01477-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 12/26/2019] [Indexed: 01/03/2023]
Abstract
Long non-coding RNAs (lncRNAs) have been demonstrated to be involved in the pathogenesis of neuropsychiatric disorders such as epilepsy. In the current study, we evaluated expression of eight lncRNAs in 80 epileptic patients (40 refractory and 40 non-refractory ones) and 40 normal individual using quantitative real-time PCR. Bayesian regression model showed significant higher expression of UCA1 in both refractory and non-refractory groups compared with controls (posterior beta of relative expression (RE) = 2.03, P value = 0.003, and posterior beta of RE = 4.05, P value < 0.0001, respectively). Besides, expression of UCA1 was higher in non-refractory patients compared with refractory ones (posterior beta of RE = 2.008, P value = 0.019). When repeating statistical analyses in a gender-based manner, differences in expression of UCA1 were significant in all subgroup analyses except for male non-refractory vs. refractory subgroups analysis. Expression levels of NKILA and ANRIL were higher in both refractory and non-refractory groups compared with controls (posterior beta of RE = 1.565, P value = 0.018, and posterior beta of RE = 1.902, P value = 0.006 for NKILA; posterior beta of RE = 1.304, P value < 0.0001, and posterior beta of RE = 1.603, P value = 0.019 for ANRIL, respectively). However, expression levels of these two lncRNAs were not different between refractory and non-refractory groups. Gender-based analysis for these two lncRNAs revealed similar results except for lack of difference in ANRIL expression between male refractory group and controls. Expression of THRIL was significantly lower in both refractory and non-refractory groups compared with controls (posterior beta of RE = - 0.842, P value = 0.044 and posterior beta of RE = - 1.969, P value < 0.0001, respectively). Furthermore, expression of this lncRNA was lower in non-refractory patients compared with refractory ones (posterior beta of RE = - 1.129, P value = 0.002). However, no significant difference was detected between non-refractory and refractory patients either in males or females. The interactions between gender and relative expressions of PACER, DILC, and MALAT1 were significant, so the results were assessed in gender-based manner. In females, expression of DILC was higher in non-refractory patients compared with refractory ones (posterior beta of RE = 0.959, P value = 0.044). Expression of MALAT1 was lower in female non-refractory patients compared with controls and in female non-refractory patients compared with refractory ones (posterior beta of RE = - 1.35, P value = 0.002, and posterior beta of RE = - 0.942, P value = 0.045, respectively). Finally, expression of PACER was higher in refractory patients vs. controls and non-refractory patients vs. controls in both male and female subgroups. However, comparison between non-refractory and refractory patients revealed significant results only among females. Expression of none of the assessed lncRNAs was correlated with age of study participants. There were robust correlations between expression levels of lncRNAs. The most robust correlations were detected between UCA1 and PACER (r = 0.84, P < 0.0001) and between UCA1 and ANRIL (r = 0.75, P < 0.0001). Taken together, our study demonstrated dysregulation of lncRNAs in peripheral blood of epileptic patients and potentiated them as biomarkers for this neurologic condition.
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Zhang H, Tao J, Zhang S, Lv X. LncRNA MEG3 Reduces Hippocampal Neuron Apoptosis via the PI3K/AKT/mTOR Pathway in a Rat Model of Temporal Lobe Epilepsy. Neuropsychiatr Dis Treat 2020; 16:2519-2528. [PMID: 33149593 PMCID: PMC7604460 DOI: 10.2147/ndt.s270614] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/21/2020] [Indexed: 12/11/2022] Open
Abstract
PURPOSE Temporal lobe epilepsy (TLE) is a common neurological disorder, which is characterized by recurrent spontaneous seizures. Exploring the mechanisms of epileptogenesis has been considered as a priority. The aim of this study is to investigate the effects of LncRNA MEG3 in spontaneous recurrent epileptiform discharges (SREDs) and rats with TLE. METHODS Rat model of TLE was produced by intraperitoneal injection of lithium chloride and pilocarpine. Rat hippocampal neuronal model of SREDs was established by Mg2+-free treatment. MEG3 was overexpressed by transfection of AAV-MEG3 in TLE and SREDs model. The expression of MEG3, interleukin-1β (IL-1β), interleukin-6 (IL-6) and recombinant human tumor necrosis factor-alpha (TNF-α) was detected by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Malondialdehyde (MDA) content and superoxide dismutase (SOD) activity were detected by corresponding kit. The apoptosis of hippocampal neurons was detected by terminal deoxynucleotidyl transferase transfer‑mediated dUTP nick end‑labeling (TUNEL) assay and flow cytometry. The expression of proteins related to apoptosis (Caspase-3, Bax, and Bcl-2) and the PI3K/AKT/mTOR pathway was detected by Western blot. RESULTS MEG3 expression was downregulated in SREDs and rats with TLE. Overexpression of MEG3 reduced the expression of IL-1β, IL-6, and TNF-α, MDA content, apoptosis rate of hippocampal neuron, increased SOD activity, and inhibited the PI3K/AKT/mTOR pathway in rats with TLE. In addition, overexpression of MEG3 enhanced cell viability and inhibited apoptosis through the activation of the PI3K/AKT/mTOR pathway in SREDs. CONCLUSION MEG3 reduced proinflammatory cytokines, oxidative stress, and apoptosis rate of hippocampal neuron and enhanced cell viability through the activation of the PI3K/AKT/mTOR pathway in SREDs and rats with TLE. Our findings may contribute to find a new therapeutic target for the treatment of epilepsy.
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Affiliation(s)
- Hongyan Zhang
- Department of Pediatrics, The First People's Hospital of Jinan, Jinan, Shandong 250011, People's Republic of China
| | - Jiuyun Tao
- Department of Surgery 1, Chiping County People's Hospital, Liaocheng, Shandong 252100, People's Republic of China
| | - ShuXia Zhang
- Department of Obstetrics, Zhangqiu People's Hospital of Jinan City, Jinan, Shandong 250200, People's Republic of China
| | - XinXin Lv
- Department of Pediatrics, Jining First People's Hospital, Jining, Shandong 272000, People's Republic of China
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Long Non-Coding RNAs and Related Molecular Pathways in the Pathogenesis of Epilepsy. Int J Mol Sci 2019; 20:ijms20194898. [PMID: 31581735 PMCID: PMC6801574 DOI: 10.3390/ijms20194898] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 09/27/2019] [Accepted: 10/02/2019] [Indexed: 02/07/2023] Open
Abstract
Epilepsy represents one of the most common neurological disorders characterized by abnormal electrical activity in the central nervous system (CNS). Recurrent seizures are the cardinal clinical manifestation. Although it has been reported that the underlying pathological processes include inflammation, changes in synaptic strength, apoptosis, and ion channels dysfunction, currently the pathogenesis of epilepsy is not yet completely understood. Long non-coding RNAs (lncRNAs), a class of long transcripts without protein-coding capacity, have emerged as regulatory molecules that are involved in a wide variety of biological processes. A growing number of studies reported that lncRNAs participate in the regulation of pathological processes of epilepsy and they are dysregulated during epileptogenesis. Moreover, an aberrant expression of lncRNAs linked to epilepsy has been observed both in patients and in animal models. In this review, we summarize latest advances concerning the mechanisms of action and the involvement of the most dysregulated lncRNAs in epilepsy. However, the functional roles of lncRNAs in the disease pathogenesis are still to be explored and we are only at the beginning. Additional studies are needed for the complete understanding of the underlying mechanisms and they would result in the use of lncRNAs as diagnostic biomarkers and novel therapeutic targets.
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Sha JY, Zhou YD, Yang JY, Leng J, Li JH, Hu JN, Liu W, Jiang S, Wang YP, Chen C, Li W. Maltol (3-Hydroxy-2-methyl-4-pyrone) Slows d-Galactose-Induced Brain Aging Process by Damping the Nrf2/HO-1-Mediated Oxidative Stress in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:10342-10351. [PMID: 31461273 DOI: 10.1021/acs.jafc.9b04614] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Maltol, a maillard reaction product from ginseng (Panax ginseng C. A. Meyer), has been confirmed to inhibit oxidative stress in several animal models. Its beneficial effect on oxidative stress related brain aging is still unclear. In this study, the mouse model of d-galactose (d-Gal)-induced brain aging was employed to investigate the therapeutic effects and potential mechanisms of maltol. Maltol treatment significantly restored memory impairment in mice as determined by the Morris water maze tests. Long-term d-Gal treatment reduced expression of cholinergic regulators, i.e., the cholineacetyltransferase (ChAT) (0.456 ± 0.10 vs 0.211 ± 0.03 U/mg prot), the acetylcholinesterase (AChE) (36.4 ± 5.21 vs 66.5 ± 9.96 U/g). Maltol treatment prevented the reduction of ChAT and AChE in the hippocampus. Maltol decreased oxidative stress levels by reducing levels of reactive oxygen species (ROS) and malondialdehyde (MDA) production in the brain and by elevating antioxidative enzymes. Furthermore, maltol treatment minimized oxidative stress by increasing the phosphorylation levels of phosphatidylinositol-3-kinase (PI3K), protein kinase B (Akt), nuclear factor-erythroid 2-related factor 2 (Nrf2), and hemeoxygenase-1 (HO-1). The above results clearly indicate that supplementation of maltol diminishes d-Gal-induced behavioral dysfunction and neurological deficits via activation of the PI3K/Akt-mediated Nrf2/HO-1 signaling pathway in brain. Maltol might become a potential drug to slow the brain aging process and stimulate endogenous antioxidant defense capacity. This study provides the novel evidence that maltol may slow age-associated brain aging.
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Affiliation(s)
- Ji-Yue Sha
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
| | - Yan-Dan Zhou
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
| | - Jia-Yu Yang
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
| | - Jing Leng
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
| | - Jian-Hao Li
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
| | - Jun-Nan Hu
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
| | - Wei Liu
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
| | - Shuang Jiang
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
| | - Ying-Ping Wang
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
- National & Local Joint Engineering Research Center for Ginseng Breeding and Development , Changchun 130118 , China
| | - Chen Chen
- School of Biomedical Sciences , The University of Queensland , Brisbane 4072 , Australia
| | - Wei Li
- College of Chinese Medicinal Materials , Jilin Agricultural University , Changchun 130118 , China
- National & Local Joint Engineering Research Center for Ginseng Breeding and Development , Changchun 130118 , China
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Fallah H, Azari I, Neishabouri SM, Oskooei VK, Taheri M, Ghafouri-Fard S. Sex-specific up-regulation of lncRNAs in peripheral blood of patients with schizophrenia. Sci Rep 2019; 9:12737. [PMID: 31484957 PMCID: PMC6726592 DOI: 10.1038/s41598-019-49265-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 08/22/2019] [Indexed: 02/06/2023] Open
Abstract
Schizophrenia as a common disabling psychiatric disorder has been associated with dysregulation of several genes and pathways among them are those being regulated by long non-coding RNAs (lncRNAs). Based on the acknowledged roles of lncRNAs in neurodevelopment, in the current study, we assessed expression of six lncRNAs namely HOXA-AS2, Linc-ROR, MALAT1, MEG3, SPRY4-IT1 and UCA1 in peripheral blood of 60 patients with schizophrenia and 60 healthy subjects. HOXA-AS2, Linc-ROR, MEG3, SPRY4-IT1 and UCA1 levels were significantly higher in total patients compared with total controls. However, when evaluating expression of genes in sex-based subgroups, the differences in the expression of these lncRNAs were significant only among females. Assessment of partial correlation between expression of lncRNAs and age of study participants after controlling the effect of sex, revealed significant correlations for HOXA-AS2, MALAT1 and UCA1 in both patients and controls. Besides, expressions of Linc-ROR and SPRY4-IT1 were correlated with age only in patients. Significant pairwise correlations were recognized between expression levels of lncRNAs in both patients with schizophrenia and controls. Based on the area under curve (AUC) values, SPRY4-IT1 had the best performance in differentiation of female patients with schizophrenia from female controls (AUC = 0.85, P < 0.0001). Combination of Linc-ROR, MEG3, SPRY4-IT1 and UCA1 expression levels could differentiate female patients with 95.2% sensitivity, 76.9% specificity and diagnostic power of 0.88 (P < 0.0001). The current study suggests the presence of a sex-based dysregulation of lncRNAs in patients with schizophrenia and their possible application as diagnostic biomarkers.
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Affiliation(s)
- Hamid Fallah
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Iman Azari
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Vahid Kholghi Oskooei
- Department of Laboratory Sciences, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
- Neuroscience Research Center, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Mohammad Taheri
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Li BG, Wu WJ, Zheng HC, Yang HF, Zuo YX, Cui XP. Long noncoding RNA GAS5 silencing inhibits the expression of KCNQ3 by sponging miR-135a-5p to prevent the progression of epilepsy. Kaohsiung J Med Sci 2019; 35:527-534. [PMID: 31373759 DOI: 10.1002/kjm2.12102] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 06/03/2019] [Indexed: 02/06/2023] Open
Abstract
Epilepsy is one of the most common neurological disorders in humans. Recently, long noncoding RNAs (lncRNAs) have been reported to be important players in neurological diseases. Herein, this study aimed to examine the effect of lncRNA GAS5 on the occurrence of epilepsy in rat and cell models of epileptic seizure. The expression of lncRNA GAS5 was measured in the established rat and cell models. The binding sites between lncRNA GAS5 and miR-135a-5p, as well as those between miR-135a-5p and 3' untranslated region of KCNQ3 were predicted by miRDB and Targetscan, separately, followed by verification using dual-luciferase reporter gene assay. The expression of miR-135a-5p was measured in response to the overexpression of lncRNA GAS5. The mRNA and protein levels of KCNQ3 were examined in response to overexpression of miR-135a-5p. Next, the latency of epilepsy and frequency of epileptic seizures were assessed in rats injected with Lv-shGAS5 and Lv-miR-135a-5p in epileptic seizure model. In the rat and cell models, lncRNA GAS5 was highly expressed when epileptic seizure was induced. The expression of miR-135a-5p was decreased by overexpression of lncRNA GAS5. Meanwhile, the mRNA and protein levels of KCNQ3 were decreased in response to knockdown of miR-135a-5p. After the treatment of Lv-shGAS5 and Lv-miR-135a-5p, the average latent period of epilepsy was prolonged and the frequency of seizures was decreased. The key findings of the present study provide evidence emphasizing that lncRNA GAS5 functions as a competitive endogenous RNA of miR-135a-5p to increase expression of KCNQ3, and lncRNA GAS5 silencing inhibited the occurrence and progression of epilepsy.
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Affiliation(s)
- Bao-Guang Li
- Department of Neurology, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China
| | - Wen-Juan Wu
- Department of Neurology, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China
| | - Hua-Cheng Zheng
- Department of Neurology, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China
| | - Hua-Fang Yang
- Department of Neurology, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China
| | - Yue-Xian Zuo
- Department of Neurology, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China
| | - Xiao-Pu Cui
- Department of Neurology, Children's Hospital of Hebei Province, Shijiazhuang, Hebei, China
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Yang F, Li XF, Cheng LN, Li XL. Long non-coding RNA CRNDE promotes cell apoptosis by suppressing miR-495 in inflammatory bowel disease. Exp Cell Res 2019; 382:111484. [PMID: 31251902 DOI: 10.1016/j.yexcr.2019.06.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/04/2019] [Accepted: 06/24/2019] [Indexed: 02/09/2023]
Abstract
OBJECTIVE This article aims to investigate the mechanism of microRNA-495 (miR-495) and long non-coding RNA CRNDE on the apoptosis of colonic epithelial cells in inflammatory bowel diseases (IBDs). METHODS The mouse model of IBD was induced by dextran sulfate sodium (DSS), and human colonic epithelial cell lines (HT-29, LOVO, and Caco-2) were treated with DSS, and received cell transfection. RNA interference was used to down-regulate CRNDE expression. RESULTS CRNDE and SOCS1 were highly expressed, but miR-495 was lowly expressed in the DSS-induced colitis tissues and colonic epithelial cell lines. Interference of CRNDE inhibited cell apoptosis of DSS-induced colonic epithelial cells. The interaction between CRNDE and miR-495 was confirmed by RNA immunoprecipitation and RNA pull-down assay. The target relationship between miR-495 and SOCS1 was confirmed by the luciferase reporter assay. CRNDE promoted DSS-induced colonic epithelial cell apoptosis via miR-495/SOCS1. CRNDE interference in DSS-induced colitis mouse model alleviated clinical manifestations of IBD. CONCLUSIONS Our findings demonstrated that CRNDE promoted DSS-induced colonic epithelial cell apoptosis via suppressing miR-495 and increasing SOCS1, indicating CRNDE as a novel target of treating IBD.
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Affiliation(s)
- Fan Yang
- Department of Gastroenterology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, China
| | - Xiao-Fang Li
- Department of Gastroenterology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, China
| | - Li-Na Cheng
- Department of Gastroenterology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, China
| | - Xiu-Ling Li
- Department of Gastroenterology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, 450003, China.
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Li M, Cui L, Feng X, Wang C, Zhang Y, Wang L, Ding Y, Zhao T. Losmapimod Protected Epileptic Rats From Hippocampal Neuron Damage Through Inhibition of the MAPK Pathway. Front Pharmacol 2019; 10:625. [PMID: 31231220 PMCID: PMC6565798 DOI: 10.3389/fphar.2019.00625] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 05/15/2019] [Indexed: 12/15/2022] Open
Abstract
Objective: This research aimed to validate the therapeutic effect of losmapimod and explore the underlying mechanism in its treatment of epilepsy. Methods: A rat model of epilepsy was constructed with an injection of pilocarpine. Microarray analysis was performed to screen aberrantly expressed mRNAs and activated signaling pathways between epileptic rats and normal controls. A TdT-mediated dUTP nick-end labeling (TUNEL) assay was used to identify cell apoptosis. Hippocampal cytoarchitecture was visualized with Nissl staining. The secretion of inflammatory factors as well as the marker proteins in the mitogen-activated protein kinase (MAPK) pathway were detected by Western blot. A Morris water maze navigation test evaluated the rats’ cognitive functions. Results: Activation of the MAPK signaling pathway was observed in epilepsy rats. A decrease in the MAPK phosphorylation level by application of losmapimod protected against epilepsy by reducing neuron loss. Losmapimod effectively improved memory, reduced the frequency of seizures, protected the neuron from damage, and limited the apoptosis of neurons in epilepsy rats. Conclusion: The application of losmapimod could partly reverse the development of epilepsy.
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Affiliation(s)
- Min Li
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Lexiang Cui
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Xuemin Feng
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Chao Wang
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yinmeng Zhang
- Major in Clinical Medicine, Medical College of Nanchang University, Nanchang, China
| | - Lijie Wang
- Department of Traditional Chinese Medicine, General Hospital of FAW, Fourth Hospital of Jilin University, Changchuan, China
| | - Ying Ding
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
| | - Teng Zhao
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
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Li X, Giri V, Cui Y, Yin M, Xian Z, Li J. LncRNA FTX inhibits hippocampal neuron apoptosis by regulating miR-21-5p/SOX7 axis in a rat model of temporal lobe epilepsy. Biochem Biophys Res Commun 2019; 512:79-86. [DOI: 10.1016/j.bbrc.2019.03.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 03/03/2019] [Indexed: 12/14/2022]
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49
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Involvement of Nrf2 in myocardial ischemia and reperfusion injury. Int J Biol Macromol 2019; 125:496-502. [DOI: 10.1016/j.ijbiomac.2018.11.190] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 11/19/2018] [Accepted: 11/19/2018] [Indexed: 12/23/2022]
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50
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Dai H, Wang P, Mao H, Mao X, Tan S, Chen Z. Dynorphin activation of kappa opioid receptor protects against epilepsy and seizure-induced brain injury via PI3K/Akt/Nrf2/HO-1 pathway. Cell Cycle 2019; 18:226-237. [PMID: 30595095 PMCID: PMC6343729 DOI: 10.1080/15384101.2018.1562286] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 11/28/2018] [Accepted: 12/01/2018] [Indexed: 12/25/2022] Open
Abstract
Dynorphins act as endogenous anticonvulsants via activation of kappa opioid receptor (KOR). However, the mechanism underlying the anticonvulsant role remains elusive. This study aims to investigate whether the potential protection of KOR activation by dynorphin against epilepsy was associated with the regulation of PI3K/Akt/Nrf2/HO-1 pathway. Here, a pilocarpine-induced rat model of epilepsy and Mg2+-free-induced epileptiform hippocampal neurons were established. Decreased prodynorphin (PDYN) expression, suppressed PI3K/Akt pathway, and activated Nrf2/HO-1 pathway were observed in rat epileptiform hippocampal tissues and in vitro neurons. Furthermore, dynorphin activation of KOR alleviated in vitro seizure-like neuron injury via activation of PI3K/Akt/Nrf2/HO-1 pathway. Further in vivo investigation revealed that PDYN overexpression by intra-hippocampus injection of PDYN-overexpressing lentiviruses decreased hippocampal neuronal apoptosis and serum levels of inflammatory cytokines and malondialdehyde (MDA) content, and increased serum superoxide dismutase (SOD) level, in pilocarpine-induced epileptic rats. The protection of PDYN in vivo was associated with the activation of PI3K/Akt/Nrf2/HO-1 pathway. In conclusion, dynorphin activation of KOR protects against epilepsy and seizure-induced brain injury, which is associated with activation of the PI3K/Akt/Nrf2/HO-1 pathway.
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Affiliation(s)
- Hongmei Dai
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Peipei Wang
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Huafang Mao
- Department of Child Hygiene, Maternal and Child Health Hospital of Longhua District of Shenzhen City, ShenZhen, China
| | - Xiao Mao
- Department of Medical Genetics, Maternal and Child Health Hospital of Hunan Province, Changsha, China
| | - Shan Tan
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhiheng Chen
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, China
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