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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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Ye X, Lin JY, Chen LX, Wu XC, Ma KJ, Li BX, Fang YX. SREBP1 deficiency diminishes glutamate-mediated HT22 cell damage and hippocampal neuronal pyroptosis induced by status epilepticus. Heliyon 2024; 10:e23945. [PMID: 38205297 PMCID: PMC10777081 DOI: 10.1016/j.heliyon.2023.e23945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 11/06/2023] [Accepted: 12/16/2023] [Indexed: 01/12/2024] Open
Abstract
Status epilepticus (SE) is a life-threatening disorder that can result in death or severe brain damage, and there is a substantial body of evidence suggesting a strong association between pyroptosis and SE. Sterol regulatory element binding protein 1 (SREBP1) is a significant transcription factor participating in both lipid homeostasis and glucose metabolism. However, the function of SREBP1 in pyroptosis during SE remains unknown. In this study, we established a SE rat model by intraperitoneal injection of lithium chloride and pilocarpine in vivo. Additionally, we treated HT22 hippocampal cells with glutamate to create neuronal injury models in vitro. Our results demonstrated a significant induction of SREBP1, inflammasomes, and pyroptosis in the hippocampus of SE rats and glutamate-treated HT22 cells. Moreover, we found that SREBP1 is regulated by the mTOR signaling pathway, and inhibiting mTOR signaling contributed to the amelioration of SE-induced hippocampal neuron pyroptosis, accompanied by a reduction in SREBP1 expression. Furthermore, we conducted siRNA-mediated knockdown of SREBP1 in HT22 cells and observed a significant reversal of glutamate-induced cell death, activation of inflammasomes, and pyroptosis. Importantly, our confocal immunofluorescence analysis revealed the co-localization of SREBP1 and NLRP1. In conclusion, our findings suggest that deficiency of SREBP1 attenuates glutamate-induced HT22 cell injury and hippocampal neuronal pyroptosis in rats following SE. Targeting SREBP1 may hold promise as a therapeutic strategy for SE.
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Affiliation(s)
- Xing Ye
- Department of Forensic Medicine, School of Basic Medical Sciences, Gannan Medical University, Ganzhou, 341000, China
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Jun-Yi Lin
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Ling-Xia Chen
- Department of Pathogenic Biology, School of Basic Medical Sciences, Gannan Medical University, Ganzhou, 341000, China
| | - Xue-chun Wu
- Department of Neurology, Minhang Hospital, Fudan University, Shanghai, China
| | - Kai-Jun Ma
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai, 200083, China
| | - Bei-Xu Li
- School of Policing Studies, Shanghai University of Political Science and Law, Shanghai, 201701, China
| | - You-Xin Fang
- Department of Neurology, Minhang Hospital, Fudan University, Shanghai, China
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Insight into Drug Resistance in Status Epilepticus: Evidence from Animal Models. Int J Mol Sci 2023; 24:ijms24032039. [PMID: 36768361 PMCID: PMC9917109 DOI: 10.3390/ijms24032039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/11/2023] [Accepted: 01/15/2023] [Indexed: 01/22/2023] Open
Abstract
Status epilepticus (SE), a condition with abnormally prolonged seizures, is a severe type of epilepsy. At present, SE is not well controlled by clinical treatments. Antiepileptic drugs (AEDs) are the main therapeutic approaches, but they are effective for SE only with a narrow intervening window, and they easily induce resistance. Thus, in this review, we provide an updated summary for an insight into drug-resistant SE, hoping to add to the understanding of the mechanism of refractory SE and the development of active compounds. Firstly, we briefly outline the limitations of current drug treatments for SE by summarizing the extensive experimental literature and clinical data through a search of the PubMed database, and then summarize the common animal models of refractory SE with their advantages and disadvantages. Notably, we also briefly review some of the hypotheses about drug resistance in SE that are well accepted in the field, and furthermore, put forward future perspectives for follow-up research on SE.
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Wang Z, Na Z, Cui Y, Wei C, Wang S. LncRNA ZFAS1 regulates the hippocampal neurons injury in epilepsy through the miR-15a-5p/OXSR1/NF-κB pathway. Metab Brain Dis 2022; 37:2277-2290. [PMID: 35751788 DOI: 10.1007/s11011-022-01013-5] [Citation(s) in RCA: 4] [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: 11/02/2021] [Accepted: 05/21/2022] [Indexed: 10/17/2022]
Abstract
Long non-coding RNAs (lncRNAs) have been confirmed to be involved in epilepsy development. It has been reported that lncRNA ZFAS1 plays a vital regulatory role in epilepsy progression. Therefore, the role and molecular mechanism of ZFAS1 in epilepsy progression deserve further investigation. Mice status epilepticus (SE) model was constructed, and hippocampal neurons were isolated from mice hippocampus tissues. The expression of ZFAS1, miR-15a-5p and oxidative stress responsive 1 (OXSR1) were determined by quantitative real-time PCR. ELISA assay was used to detect the concentrations of inflammation factors. Cell viability and apoptosis were examined by MTT assay, EdU staining and flow cytometry. Western blot analysis was conducted to measure protein levels, and the productions of SOD and MDA were measured to assess cell oxidative stress. Dual-luciferase reporter assay and RIP assay were employed to validate the relationship between miR-15a-5p and ZFAS1 or OXSR1. LncRNA ZFAS1 was highly expressed in SE mice and SE-stimulated hippocampal neurons. Silenced ZFAS1 promoted viability, while inhibited inflammation, apoptosis and oxidative stress in SE-induced hippocampal neurons. MiR-15a-5p could be targeted by ZFAS1, and its inhibitor also reversed the suppressive effect of ZFAS1 knockdown on SE-induced hippocampal neurons injury. In addition, OXSR1 was a target of miR-15a-5p, and its silencing also could relieve SE-induced hippocampal neurons injury. OXSR1 overexpression reversed the inhibition effect of miR-15a-5p on SE-induced hippocampal neurons injury. Moreover, ZFAS1 positively regulated OXSR1 expression by sponging miR-15a-5p, thereby activating the NF-κB pathway. LncRNA ZFAS1 might contribute to the progression of epilepsy by regulating the miR-15a-5p/OXSR1/NF-κB pathway.
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Affiliation(s)
- Zengmian Wang
- School of Basic Medicine, Jiamusi University, 148-Xuefu Street, Jiamusi, Heilongjiang, 154007, People's Republic of China
| | - Zhimin Na
- Department of Respiratory and Critical Care Medicine, Mudanjiang First People's Hospital, No. 76 Jianwei Road, Aimin District, Mudanjiang, Heilongjiang, China
| | - Ying Cui
- Department of Internal Medicine, Tangyuan Hospital of Traditional Chinese Medicine, West of Hazhao Road, Tangyuan, Jiamusi, Heilongjiang, China
| | - Chunjie Wei
- Department of Neurology, The First Affiliated Hospital of Jiamusi University, Xiangyang District, Dexiang Street No.348, Jiamusi, Heilongjiang, 154007, China
| | - Shuqiu Wang
- Department of Pathophysiology, School of Basic Medicine, Jiamusi University, 148-Xuefu Street, Jiamusi, Heilongjiang, 154007, People's Republic of China.
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Liu Y, Cheng X, Li H, Hui S, Zhang Z, Xiao Y, Peng W. Non-Coding RNAs as Novel Regulators of Neuroinflammation in Alzheimer's Disease. Front Immunol 2022; 13:908076. [PMID: 35720333 PMCID: PMC9201920 DOI: 10.3389/fimmu.2022.908076] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/09/2022] [Indexed: 01/04/2023] Open
Abstract
Alzheimer’s disease (AD) is one of the most common causes of dementia. Although significant breakthroughs have been made in understanding the progression and pathogenesis of AD, it remains a worldwide problem and a significant public health burden. Thus, more efficient diagnostic and therapeutic strategies are urgently required. The latest research studies have revealed that neuroinflammation is crucial in the pathogenesis of AD. Non-coding RNAs (ncRNAs), including long noncoding RNAs (lncRNAs), microRNAs (miRNAs), circular RNAs (circRNAs), PIWI-interacting RNAs (piRNAs), and transfer RNA-derived small RNAs (tsRNAs), have been strongly associated with AD-induced neuroinflammation. Furthermore, several ongoing pre-clinical studies are currently investigating ncRNA as disease biomarkers and therapeutic interventions to provide new perspectives for AD diagnosis and treatment. In this review, the role of different types of ncRNAs in neuroinflammation during AD are summarized in order to improve our understanding of AD etiology and aid in the translation of basic research into clinical practice.
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Affiliation(s)
- Yuqing Liu
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Mental Disorder, Changsha, China
| | - Xin Cheng
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Mental Disorder, Changsha, China
| | - Hongli Li
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Mental Disorder, Changsha, China
| | - Shan Hui
- Department of Geratology, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Zheyu Zhang
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Mental Disorder, Changsha, China
| | - Yang Xiao
- National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, Changsha, China.,Department of Metabolism and Endocrinology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Weijun Peng
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Mental Disorder, Changsha, China
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Rani A, Barter J, Kumar A, Stortz JA, Hollen M, Nacionales D, Moldawer LL, Efron PA, Foster TC. Influence of age and sex on microRNA response and recovery in the hippocampus following sepsis. Aging (Albany NY) 2022; 14:728-746. [PMID: 35094981 PMCID: PMC8833110 DOI: 10.18632/aging.203868] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/20/2022] [Indexed: 11/25/2022]
Abstract
Sepsis, defined as a dysregulated host immune response to infection, is a common and dangerous clinical syndrome. The excessive host inflammatory response can induce immediate and persistent cognitive decline, which can be worse in older individuals. Sex-specific differences in the outcome of infectious diseases and sepsis appear to favor females. We employed a murine model to examine the influence of age and sex on the brain's microRNA (miR) response following sepsis. Young and old mice of both sexes underwent cecal ligation and puncture (CLP) with daily restraint stress. Expression of hippocampal miR was examined in age- and sex-matched controls at 1 and 4 days post-CLP. Few miR were modified in a similar manner across age or sex and these few miR were generally associated with neuroprotection against inflammation. Similar to previous work examining transcription, young females exhibited a better recovery of the miR profile from day 1 to day 4, relative to young males and old females. For young males and all female groups, the initial response mainly involved a decrease in miR expression. In contrast, old males exhibited only upregulated miR on day 1 and day 4 and many of the miR upregulated on day 1 and day 4 were linked to neurodegeneration, increased neuroinflammation, and cognitive impairment. The results emphasize age and sex differences in epigenetic mechanisms that likely contribute to susceptibility or resilience to cognitive impairment due to sepsis.
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Affiliation(s)
- Asha Rani
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA
| | - Jolie Barter
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA
| | - Ashok Kumar
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA
| | - Julie A Stortz
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - McKenzie Hollen
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - Dina Nacionales
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - Lyle L Moldawer
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - Philip A Efron
- Department of Surgery, University of Florida, Gainesville, FL 32611, USA
| | - Thomas C Foster
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA.,Genetics and Genomics Program, University of Florida, Gainesville, FL 32611, USA
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Chen S, Xu D, Fan L, Fang Z, Wang X, Li M. Roles of N-Methyl-D-Aspartate Receptors (NMDARs) in Epilepsy. Front Mol Neurosci 2022; 14:797253. [PMID: 35069111 PMCID: PMC8780133 DOI: 10.3389/fnmol.2021.797253] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 11/29/2021] [Indexed: 12/12/2022] Open
Abstract
Epilepsy is one of the most common neurological disorders characterized by recurrent seizures. The mechanism of epilepsy remains unclear and previous studies suggest that N-methyl-D-aspartate receptors (NMDARs) play an important role in abnormal discharges, nerve conduction, neuron injury and inflammation, thereby they may participate in epileptogenesis. NMDARs belong to a family of ionotropic glutamate receptors that play essential roles in excitatory neurotransmission and synaptic plasticity in the mammalian CNS. Despite numerous studies focusing on the role of NMDAR in epilepsy, the relationship appeared to be elusive. In this article, we reviewed the regulation of NMDAR and possible mechanisms of NMDAR in epilepsy and in respect of onset, development, and treatment, trying to provide more evidence for future studies.
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Affiliation(s)
| | | | | | | | | | - Man Li
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Zhang F, Chen G, Wang L, Feng Z, Mi W. LncRNA taurine up-regulated gene 1 participates in isoflurane induced neurotoxicity. Mol Cell Toxicol 2021. [DOI: 10.1007/s13273-021-00141-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Wang H, Jiao H, Jiang Z, Chen R. Propofol inhibits migration and induces apoptosis of pancreatic cancer PANC-1 cells through miR-34a-mediated E-cadherin and LOC285194 signals. Bioengineered 2020; 11:510-521. [PMID: 32303144 PMCID: PMC7185861 DOI: 10.1080/21655979.2020.1754038] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 12/13/2022] Open
Abstract
Propofol has exhibited potent antitumor activity in pancreatic cancer cells in vitro and in vivo. The study aimed to investigate the anti-tumor mechanisms of propofol on pancreatic cancer PANC-1 cells in vitro. PANC-1 cells were exposure to concentration 20 μg/ml of propofol for 72 h. Long non-coding RNA LOC285194 siRNA LOC285194 siRNA, E-cadherin siRNA and microRNA-34a (miR-34a) inhibitor were used to investigate the effect of propofol on PANC-1 cells. miR-34a and LOC285194 were analyzed by quantitative real-time PCR (qRT-PCR). Pro-apoptotic protein bax, cleaved-caspase-3 and anti-apoptotic protein bcl-2 were analyzed by Western blot. Cell viability and cell apoptosis were detected by MTT and TUNEL staining, respectively. Cell migration was detected by wound-healing assay. The results showed that propofol upregulated miR-34a expression, which, in turn, upregulated LOC285194 expression, resulting in PANC-1 cell apoptosis and growth inhibition. In addition, propofol upregulated miR-34a expression, which, in turn, upregulated E-cadherin expression, resulting in cell migration inhibition. Our research confirmed that propofol-induced cell apoptosis and inhibited cell migration in PANC-1 cells in vitro via promoting miR-34a-dependent LOC285194 and E-cadherin upregulation, respectively.
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Affiliation(s)
- Hongwei Wang
- Department of Anesthesia, Linyi Cancer Hospital, Linyi, Shandong, China
| | - Hongmei Jiao
- Department of Anesthesia, Linyi Cancer Hospital, Linyi, Shandong, China
| | - Ziru Jiang
- External Abdominal Section, Linyi Cancer Hospital, Linyi, Shandong, China
| | - Renyi Chen
- Department of Anesthesia, Linyi Cancer Hospital, Linyi, Shandong, China
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