1
|
Zhang L, Zeng C, Huang J, Yan H, Jiang Y, Li R. Exploration of the miR-187-3p/CNR2 pathway in modulating osteoblast differentiation and treating postmenopausal osteoporosis through mechanical stress. FASEB J 2024; 38:e23776. [PMID: 38958998 DOI: 10.1096/fj.202400113rr] [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: 01/20/2024] [Revised: 05/28/2024] [Accepted: 06/18/2024] [Indexed: 07/04/2024]
Abstract
This study aimed to explore how mechanical stress affects osteogenic differentiation via the miR-187-3p/CNR2 pathway. To conduct this study, 24 female C57BL/6 mice, aged 8 weeks, were used and divided into four groups. The Sham and OVX groups did not undergo treadmill exercise, while the Sham + EX and OVX + EX groups received a 8-week treadmill exercise. Post-training, bone marrow and fresh femur samples were collected for further analysis. Molecular biology analysis, histomorphology analysis, and micro-CT analysis were conducted on these samples. Moreover, primary osteoblasts were cultured under osteogenic conditions and divided into GM group and CTS group. The cells in the CTS group underwent a sinusoidal stretching regimen for either 3 or 7 days. The expression of early osteoblast markers (Runx2, OPN, and ALP) was measured to assess differentiation. The study findings revealed that mechanical stress has a regulatory impact on osteoblast differentiation. The expression of miR-187-3p was observed to decrease, facilitating osteogenic differentiation, while the expression of CNR2 increased significantly. These observations suggest that mechanical stress, miR-187-3p, and CNR2 play crucial roles in regulating osteogenic differentiation. Both in vivo and in vitro experiments have confirmed that mechanical stress downregulates miR-187-3p and upregulates CNR2, which leads to the restoration of distal femoral bone mass and enhancement of osteoblast differentiation. Therefore, mechanical stress promotes osteoblasts, resulting in improved osteoporosis through the miR-187-3p/CNR2 signaling pathway. These findings have broad prospect and provide molecular biology guidance for the basic research and clinical application of exercise in the prevention and treatment of PMOP.
Collapse
Affiliation(s)
- Lei Zhang
- Department of Foot and Ankle Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopedics·Guangdong Province, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Canjun Zeng
- Department of Foot and Ankle Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopedics·Guangdong Province, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Juanyu Huang
- Department of Foot and Ankle Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopedics·Guangdong Province, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Haohang Yan
- Department of Foot and Ankle Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopedics·Guangdong Province, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| | - Yutao Jiang
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopedics·Guangdong Province, Guangzhou, China
- Guangzhou Key Laboratory of Neuropathic Pain Mechanism at Spinal Cord Level, Guangzhou, China
- Department of Spine Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Runguang Li
- Department of Foot and Ankle Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
- Orthopaedic Hospital of Guangdong Province, Guangzhou, China
- Academy of Orthopedics·Guangdong Province, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Guangzhou, China
| |
Collapse
|
2
|
Dong Y, Zhang X, Wang Y. Interleukins in Epilepsy: Friend or Foe. Neurosci Bull 2024; 40:635-657. [PMID: 38265567 PMCID: PMC11127910 DOI: 10.1007/s12264-023-01170-2] [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: 08/19/2023] [Accepted: 10/28/2023] [Indexed: 01/25/2024] Open
Abstract
Epilepsy is a chronic neurological disorder with recurrent unprovoked seizures, affecting ~ 65 million worldwide. Evidence in patients with epilepsy and animal models suggests a contribution of neuroinflammation to epileptogenesis and the development of epilepsy. Interleukins (ILs), as one of the major contributors to neuroinflammation, are intensively studied for their association and modulatory effects on ictogenesis and epileptogenesis. ILs are commonly divided into pro- and anti-inflammatory cytokines and therefore are expected to be pathogenic or neuroprotective in epilepsy. However, both protective and destructive effects have been reported for many ILs. This may be due to the complex nature of ILs, and also possibly due to the different disease courses that those ILs are involved in. In this review, we summarize the contributions of different ILs in those processes and provide a current overview of recent research advances, as well as preclinical and clinical studies targeting ILs in the treatment of epilepsy.
Collapse
Affiliation(s)
- Yuan Dong
- Neuropsychiatry Research Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266000, China.
| | - Xia Zhang
- Neuropsychiatry Research Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266000, China
| | - Ying Wang
- Neuropsychiatry Research Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266000, China.
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, 02115, USA.
| |
Collapse
|
3
|
Cheng Y, Zhang Y, Huang P, Cheng Q, Ding H. Luteolin ameliorates pentetrazole-induced seizures through the inhibition of the TLR4/NF-κB signaling pathway. Epilepsy Res 2024; 201:107321. [PMID: 38382229 DOI: 10.1016/j.eplepsyres.2024.107321] [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: 07/25/2023] [Revised: 11/21/2023] [Accepted: 02/07/2024] [Indexed: 02/23/2024]
Abstract
Epilepsy represents a prevalent neurological disorder in the population, and the existing antiepileptic drugs (AEDs) often fail to adequately control seizures. Inflammation is recognized as a pivotal factor in the pathophysiology of epilepsy. Luteolin, a natural flavonoid extract, possesses anti-inflammatory properties and exhibits promising neuroprotective activity. Nevertheless, the precise molecular mechanisms underlying the antiepileptic effects of luteolin remain elusive. In this study, we established a rat model of epilepsy using pentylenetetrazole (PTZ) to induce seizures. A series of behavioral experiments were conducted to assess behavioral abilities and cognitive function. Histological techniques, including HE staining, Nissl staining, and TUNEL staining, were employed to assess hippocampal neuronal damage. Additionally, Western blotting, RT-qPCR, and ELISA were utilized to analyze the expression levels of proteins involved in the TLR4/IκBα/NF-κB signaling pathway, transcription levels of apoptotic factors, and levels of inflammatory cytokines, respectively. Luteolin exhibited a dose-dependent reduction in seizure severity, prolonged the latency period of seizures, and shortened seizure duration. Furthermore, luteolin prevented hippocampal neuronal damage in PTZ-induced epileptic rats and partially restored behavioral function and learning and memory abilities. Lastly, PTZ kindling activated the TLR4/IκBα/NF-κB pathway, leading to elevated levels of the cytokines TNF-α, IL-6 and IL-1β, which were attenuated by luteolin. Luteolin exerted anticonvulsant and neuroprotective activities in the PTZ-induced epileptic model. Its mechanism was associated with the inhibition of the TLR4/IκBα/NF-κB pathway, alleviating the immune-inflammatory response in the post-epileptic hippocampus.
Collapse
Affiliation(s)
- Yahong Cheng
- College of Medicine and Health Science, Wuhan Polytechnic University, No.68, Xuefu South Road, Wuhan, Hubei 430023, PR China
| | - Yiyuan Zhang
- Wuhan University School of Pharmaceutical Sciences, Wuhan University, No.185 Donghu Road, Wuhan, Hubei 430072, PR China
| | - Puxin Huang
- Wuhan University School of Pharmaceutical Sciences, Wuhan University, No.185 Donghu Road, Wuhan, Hubei 430072, PR China
| | - Qingzhou Cheng
- College of Medicine and Health Science, Wuhan Polytechnic University, No.68, Xuefu South Road, Wuhan, Hubei 430023, PR China.
| | - Hong Ding
- Wuhan University School of Pharmaceutical Sciences, Wuhan University, No.185 Donghu Road, Wuhan, Hubei 430072, PR China.
| |
Collapse
|
4
|
Rashidi SK, Kalirad A, Rafie S, Behzad E, Dezfouli MA. The role of microRNAs in neurobiology and pathophysiology of the hippocampus. Front Mol Neurosci 2023; 16:1226413. [PMID: 37727513 PMCID: PMC10506409 DOI: 10.3389/fnmol.2023.1226413] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 08/11/2023] [Indexed: 09/21/2023] Open
Abstract
MicroRNAs (miRNAs) are short non-coding and well-conserved RNAs that are linked to many aspects of development and disorders. MicroRNAs control the expression of genes related to different biological processes and play a prominent role in the harmonious expression of many genes. During neural development of the central nervous system, miRNAs are regulated in time and space. In the mature brain, the dynamic expression of miRNAs continues, highlighting their functional importance in neurons. The hippocampus, as one of the crucial brain structures, is a key component of major functional connections in brain. Gene expression abnormalities in the hippocampus lead to disturbance in neurogenesis, neural maturation and synaptic formation. These disturbances are at the root of several neurological disorders and behavioral deficits, including Alzheimer's disease, epilepsy and schizophrenia. There is strong evidence that abnormalities in miRNAs are contributed in neurodegenerative mechanisms in the hippocampus through imbalanced activity of ion channels, neuronal excitability, synaptic plasticity and neuronal apoptosis. Some miRNAs affect oxidative stress, inflammation, neural differentiation, migration and neurogenesis in the hippocampus. Furthermore, major signaling cascades in neurodegeneration, such as NF-Kβ signaling, PI3/Akt signaling and Notch pathway, are closely modulated by miRNAs. These observations, suggest that microRNAs are significant regulators in the complicated network of gene regulation in the hippocampus. In the current review, we focus on the miRNA functional role in the progression of normal development and neurogenesis of the hippocampus. We also consider how miRNAs in the hippocampus are crucial for gene expression mechanisms in pathophysiological pathways.
Collapse
Affiliation(s)
- Seyed Khalil Rashidi
- Department of Medical Biotechnology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ata Kalirad
- Department of Integrative Evolutionary Biology, Max Planck Institute for Biology Tübingen, Tübingen, Germany
| | - Shahram Rafie
- Department of Neurology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Neuroscience Lab, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ebrahim Behzad
- Department of Neurology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Neuroscience Lab, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mitra Ansari Dezfouli
- Department of Neurology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Neuroscience Lab, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| |
Collapse
|
5
|
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.
Collapse
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
| |
Collapse
|
6
|
Staszewski J, Lazarewicz N, Konczak J, Migdal I, Maciaszczyk-Dziubinska E. UPF1-From mRNA Degradation to Human Disorders. Cells 2023; 12:cells12030419. [PMID: 36766761 PMCID: PMC9914065 DOI: 10.3390/cells12030419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/07/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
Up-frameshift protein 1 (UPF1) plays the role of a vital controller for transcripts, ready to react in the event of an incorrect translation mechanism. It is well known as one of the key elements involved in mRNA decay pathways and participates in transcript and protein quality control in several different aspects. Firstly, UPF1 specifically degrades premature termination codon (PTC)-containing products in a nonsense-mediated mRNA decay (NMD)-coupled manner. Additionally, UPF1 can potentially act as an E3 ligase and degrade target proteins independently from mRNA decay pathways. Thus, UPF1 protects cells against the accumulation of misfolded polypeptides. However, this multitasking protein may still hide many of its functions and abilities. In this article, we summarize important discoveries in the context of UPF1, its involvement in various cellular pathways, as well as its structural importance and mutational changes related to the emergence of various pathologies and disease states. Even though the state of knowledge about this protein has significantly increased over the years, there are still many intriguing aspects that remain unresolved.
Collapse
Affiliation(s)
- Jacek Staszewski
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
- Correspondence: (J.S.); (E.M.-D.)
| | - Natalia Lazarewicz
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
- Institute of Genetics and Development of Rennes, CNRS UMR 6290, University of Rennes 1, 35000 Rennes, France
| | - Julia Konczak
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
| | - Iwona Migdal
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
| | - Ewa Maciaszczyk-Dziubinska
- Department of Genetics and Cell Physiology, Faculty of Biological Sciences, University of Wroclaw, 50-328 Wroclaw, Poland
- Correspondence: (J.S.); (E.M.-D.)
| |
Collapse
|
7
|
Senn L, Costa AM, Avallone R, Socała K, Wlaź P, Biagini G. Is the peroxisome proliferator-activated receptor gamma a putative target for epilepsy treatment? Current evidence and future perspectives. Pharmacol Ther 2023; 241:108316. [PMID: 36436690 DOI: 10.1016/j.pharmthera.2022.108316] [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: 09/14/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022]
Abstract
The peroxisome proliferator-activated receptor gamma (PPARγ), which belongs to the family of nuclear receptors, has been mainly studied as an important factor in metabolic disorders. However, in recent years the potential role of PPARγ in different neurological diseases has been increasingly investigated. Especially, in the search of therapeutic targets for patients with epilepsy the question of the involvement of PPARγ in seizure control has been raised. Epilepsy is a chronic neurological disorder causing a major impact on the psychological, social, and economic conditions of patients and their families, besides the problems of the disease itself. Considering that the world prevalence of epilepsy ranges between 0.5% - 1.0%, this condition is the fourth for importance among the other neurological disorders, following migraine, stroke, and dementia. Among others, temporal lobe epilepsy (TLE) is the most common form of epilepsy in adult patients. About 65% of individuals who receive antiseizure medications (ASMs) experience seizure independence. For those in whom seizures still recur, investigating PPARγ could lead to the development of novel ASMs. This review focuses on the most important findings from recent investigations about the potential intracellular PPARγ-dependent processes behind different compounds that exhibited anti-seizure effects. Additionally, recent clinical investigations are discussed along with the promising results found for PPARγ agonists and the ketogenic diet (KD) in various rodent models of epilepsy.
Collapse
Affiliation(s)
- Lara Senn
- Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; PhD School of Clinical and Experimental Medicine (CEM), University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Anna-Maria Costa
- Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Rossella Avallone
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Katarzyna Socała
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Skłodowska University, PL 20-033 Lublin, Poland
| | - Piotr Wlaź
- Department of Animal Physiology and Pharmacology, Institute of Biological Sciences, Maria Curie-Skłodowska University, PL 20-033 Lublin, Poland
| | - Giuseppe Biagini
- Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy.
| |
Collapse
|
8
|
Wang ZB, Qu J, Yang ZY, Liu DY, Jiang SL, Zhang Y, Yang ZQ, Mao XY, Liu ZQ. Integrated Analysis of Expression Profile and Potential Pathogenic Mechanism of Temporal Lobe Epilepsy With Hippocampal Sclerosis. Front Neurosci 2022; 16:892022. [PMID: 35784838 PMCID: PMC9243442 DOI: 10.3389/fnins.2022.892022] [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: 03/09/2022] [Accepted: 05/24/2022] [Indexed: 11/13/2022] Open
Abstract
Objective To investigate the potential pathogenic mechanism of temporal lobe epilepsy with hippocampal sclerosis (TLE+HS) by analyzing the expression profiles of microRNA/ mRNA/ lncRNA/ DNA methylation in brain tissues. Methods Brain tissues of six patients with TLE+HS and nine of normal temporal or parietal cortices (NTP) of patients undergoing internal decompression for traumatic brain injury (TBI) were collected. The total RNA was dephosphorylated, labeled, and hybridized to the Agilent Human miRNA Microarray, Release 19.0, 8 × 60K. The cDNA was labeled and hybridized to the Agilent LncRNA+mRNA Human Gene Expression Microarray V3.0,4 × 180K. For methylation detection, the DNA was labeled and hybridized to the Illumina 450K Infinium Methylation BeadChip. The raw data was extracted from hybridized images using Agilent Feature Extraction, and quantile normalization was performed using the Agilent GeneSpring. P-value < 0.05 and absolute fold change >2 were considered the threshold of differential expression data. Data analyses were performed using R and Bioconductor. BrainSpan database was used to screen for signatures that were not differentially expressed in normal human hippocampus and cortex (data from BrainSpan), but differentially expressed in TLE+HS’ hippocampus and NTP’ cortex (data from our cohort). The strategy “Guilt by association” was used to predict the prospective roles of each important hub mRNA, miRNA, or lncRNA. Results A significantly negative correlation (r < −0.5) was found between 116 pairs of microRNA/mRNA, differentially expressed in six patients with TLE+HS and nine of NTP. We examined this regulation network’s intersection with target gene prediction results and built a lncRNA-microRNA-Gene regulatory network with structural, and functional significance. Meanwhile, we found that the disorder of FGFR3, hsa-miR-486-5p, and lnc-KCNH5-1 plays a key vital role in developing TLE+HS.
Collapse
Affiliation(s)
- Zhi-Bin Wang
- Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacology, Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Central South University, Changsha, China
| | - Jian Qu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhuan-Yi Yang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Ding-Yang Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Shi-Long Jiang
- Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacology, Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Central South University, Changsha, China
| | - Ying Zhang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
| | - Zhi-Quan Yang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- Zhi-Quan Yang,
| | - Xiao-Yuan Mao
- Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacology, Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Central South University, Changsha, China
- Xiao-Yuan Mao,
| | - Zhao-Qian Liu
- Department of Clinical Pharmacology, Hunan Key Laboratory of Pharmacogenetics, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacology, Engineering Research Center of Applied Technology of Pharmacogenomics, Ministry of Education, Central South University, Changsha, China
- *Correspondence: Zhao-Qian Liu,
| |
Collapse
|
9
|
Ghafouri-Fard S, Hussen BM, Abak A, Taheri M, Jalili Khoshnoud R. Aberrant expression of miRNAs in epilepsy. Mol Biol Rep 2022; 49:5057-5074. [PMID: 35088379 PMCID: PMC9262756 DOI: 10.1007/s11033-022-07188-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/21/2022] [Indexed: 12/22/2022]
Abstract
Epilepsy is manifested by intermittent convulsions and alterations in consciousness. This disorder has serious effects on daily functions and physical and mental health of affected patients. A variety of temporary irregularities in the function of brain can results in epilepsy. The molecular mechanism of epilepsy and the underlying causes of abnormal apoptotic responses in neurons, dysregulation of regenerative mechanisms in glial cells and abnormal immune reactions in the context of epilepsy are not clear. microRNAs (miRNAs) as important regulators of cell apoptosis as well as regenerative and immune responses have been shown to affect pathologic events in epilepsy. In the current review, we aimed at defining the role of miRNAs in the pathophysiology of epilepsy. We have listed dysregulated miRNAs in animal models of epilepsy and human subjects. miR-25-3p, miR-494, miR-139-5p, miR-101a-3p, miR-344a, miR-129, miR-298 and miR-187 are among down-regulated miRNAs in epilepsy. Moreover, expressions of miR-132, miR-146a, miR-181a and miR-155 have been reported to be increased in epilepsy. A number of genetic variants within miRNAs can affect risk of epilepsy. We discuss the role of miRNAs in the development of epilepsy.
Collapse
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, Erbil, Kurdistan Region, Iraq
- Center of Research and Strategic Studies, Lebanese French University, Erbil, Kurdistan Region, Iraq
| | - Atefe Abak
- Men's Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Reza Jalili Khoshnoud
- Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
10
|
Multi-omics in mesial temporal lobe epilepsy with hippocampal sclerosis: Clues into the underlying mechanisms leading to disease. Seizure 2021; 90:34-50. [DOI: 10.1016/j.seizure.2021.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 02/26/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023] Open
|
11
|
Muhamad Fadzil NS, Sekar M, Gan SH, Bonam SR, Wu YS, Vaijanathappa J, Ravi S, Lum PT, Dhadde SB. Chemistry, Pharmacology and Therapeutic Potential of Swertiamarin - A Promising Natural Lead for New Drug Discovery and Development. DRUG DESIGN DEVELOPMENT AND THERAPY 2021; 15:2721-2746. [PMID: 34188450 PMCID: PMC8233004 DOI: 10.2147/dddt.s299753] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/04/2021] [Indexed: 01/07/2023]
Abstract
Swertiamarin, a seco-iridoid glycoside, is mainly found in Enicostemma littorale Blume (E. littorale) and exhibits therapeutic activities for various diseases. The present study aimed to provide a review of swertiamarin in terms of its phytochemistry, physicochemical properties, biosynthesis, pharmacology and therapeutic potential. Relevant literature was collected from several scientific databases, including PubMed, ScienceDirect, Scopus and Google Scholar, between 1990 and the present. This review included the distribution of swertiamarin in medicinal plants and its isolation, characterization, physicochemical properties and possible biosynthetic pathways. A comprehensive summary of the pharmacological activities, therapeutic potential and metabolic pathways of swertiamarin was also included after careful screening and tabulation. Based on the reported evidence, swertiamarin meets all five of Lipinski’s rules for drug-like properties. Thereafter, the physicochemical properties of swertiamarin were detailed and analyzed. A simple and rapid method for isolating swertiamarin from E. littorale has been described. The present review proposed that swertiamarin may be biosynthesized by the mevalonate or nonmevalonate pathways, followed by the seco-iridoid pathway. It has also been found that swertiamarin is a potent compound with diverse pharmacological activities, including hepatoprotective, analgesic, anti-inflammatory, antiarthritis, antidiabetic, antioxidant, neuroprotective and gastroprotective activities. The anticancer activity of swertiamarin against different cancer cell lines has been recently reported. The underlying mechanisms of all these pharmacological effects are diverse and seem to involve the regulation of different molecular targets, including growth factors, inflammatory cytokines, protein kinases, apoptosis-related proteins, receptors and enzymes. Swertiamarin also modulates the activity of several transcription factors, and their signaling pathways in various pathological conditions are also discussed. Moreover, we have highlighted the toxicity profile, pharmacokinetics and possible structural modifications of swertiamarin. The pharmacological activities and therapeutic potential of swertiamarin have been extensively investigated. However, more advanced studies are required including clinical trials and studies on the bioavailability, permeability and administration of safe doses to offer swertiamarin as a novel candidate for future drug development.
Collapse
Affiliation(s)
- Nur Sakinah Muhamad Fadzil
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, Malaysia
| | - Mahendran Sekar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, Malaysia
| | - Siew Hua Gan
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - Srinivasa Reddy Bonam
- Institut National de la Santé et de la Recherche Médicale, Centre de Recherche des Cordeliers, Equipe-Immunopathologie et Immunointervention Thérapeutique, Sorbonne Université, Université de Paris, Paris, France
| | - Yuan Seng Wu
- Department of Biochemistry, School of Medicine, Faculty of Medicine, Bioscience and Nursing, MAHSA University, Bandar Saujana Putra, Selangor, Malaysia
| | - Jaishree Vaijanathappa
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, Mysuru, Karnataka, India
| | - Subban Ravi
- Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India
| | - Pei Teng Lum
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, Malaysia
| | | |
Collapse
|
12
|
Basnyat P, Pesu M, Söderqvist M, Grönholm A, Liimatainen S, Peltola M, Raitanen J, Peltola J. Chronically reduced IL-10 plasma levels are associated with hippocampal sclerosis in temporal lobe epilepsy patients. BMC Neurol 2020; 20:241. [PMID: 32532251 PMCID: PMC7291453 DOI: 10.1186/s12883-020-01825-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 06/08/2020] [Indexed: 02/06/2023] Open
Abstract
Background Increasing evidence supports the role of soluble inflammatory mediators in the pathogenesis of refractory temporal lobe epilepsy (TLE). Hippocampal sclerosis (HS) is a well-described pathohistological abnormality in TLE. The association of proinflammatory cytokines with epileptic disease profiles is well established; however, the potential significance of circulating interleukin 10 (IL-10), particularly in TLE-associated HS, is still poorly understood. Therefore, taking into consideration the neuroprotective and anticonvulsive effects of IL-10, we performed this study to examine the role of the plasma levels of IL-10 in patients with TLE with HS (TLE + HS), TLE without HS (TLE-HS) and with other types of epilepsy. Methods This study included 270 patients with refractory epilepsy who were classified into four groups: i) 34 patients with TLE + HS, ii) 105 patients with TLE-HS, iii) 95 patients with extra-TLE (XLE) and iv) 36 patients with idiopathic generalized epilepsy (IGE). The plasma IL-10 levels were quantified using a commercially available enzyme-linked immunosorbent assay (ELISA). Results IL-10 levels were significantly lower in TLE + HS than in TLE-HS (p = 0.013). In a subgroup of TLE-HS patients who had seizures 1 month before sampling, patients with seizures had significantly higher IL-10 levels than patients who were seizure-free (p = 0.039). Among a small group (n = 15) of non-refractory TLE-HS patients, IL-10 levels showed a moderate negative correlation with the duration of epilepsy (r = − 0.585, p = 0.023). Conclusions This study demonstrated that chronically reduced levels of plasma IL-10 were associated with HS in TLE patients, suggesting that there was an inadequate systemic anti-inflammatory immune response. These results could provide new biological insights into the pathophysiology of HS in TLE. We also found that the production of IL-10 could be affected by the seizure frequency and declined concomitantly with increased disease durations. Therefore, the measurement of plasma IL-10 may have diagnostic value as a biomarker for stratifying TLE + HS from other epilepsy types or as a marker of disease progression towards a progressive form of epilepsy.
Collapse
Affiliation(s)
- Pabitra Basnyat
- Department of Neurology, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, D532, 33520, Tampere, Finland. .,Department of Neurology, Tampere University Hospital, Tampere, Finland.
| | - Marko Pesu
- Immunoregulation, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Fimlab Laboratories, Tampere, Finland
| | - Mikael Söderqvist
- Department of Neurology, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, D532, 33520, Tampere, Finland
| | - Anna Grönholm
- Immunoregulation, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Suvi Liimatainen
- Department of Neurology, Tampere University Hospital, Tampere, Finland
| | - Maria Peltola
- Department of Child Psychiatry, Tampere University Hospital, Tampere, Finland
| | - Jani Raitanen
- Faculty of Social Sciences, Health Sciences, Tampere University, Tampere, Finland.,UKK Institute for Health Promotion Research, Tampere, Finland
| | - Jukka Peltola
- Department of Neurology, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, D532, 33520, Tampere, Finland.,Department of Neurology, Tampere University Hospital, Tampere, Finland
| |
Collapse
|
13
|
Jiménez A, Organista-Juárez D, Torres-Castro A, Guzmán-Ruíz MA, Estudillo E, Guevara-Guzmán R. Olfactory Dysfunction in Diabetic Rats is Associated with miR-146a Overexpression and Inflammation. Neurochem Res 2020; 45:1781-1790. [PMID: 32405762 DOI: 10.1007/s11064-020-03041-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/18/2020] [Accepted: 04/25/2020] [Indexed: 12/16/2022]
Abstract
Type 2 diabetes (T2D) is associated with cognitive decline and dementia. Both neurodegenerative conditions are characterized by olfactory dysfunction (OD) which is also observed in diabetic patients. Diabetes and neurodegeneration display altered miRNAs expression; therefore, the study of miRNAs in the diabetic olfactory system is important in order to know the mechanisms involved in neurodegeneration induced by T2D. In this work we evaluated the expression of miRs206, 451, 146a and 34a in the olfactory bulb (OB) of T2D rats and its association with OD. T2D induction was performed by administering streptozotocin to neonatal rats. The olfactory function was evaluated after reaching the adulthood by employing the buried pellet and social recognition tests. After 18 weeks, animals were sacrificed to determinate miRNAs and protein expression in the OB. T2D animals showed a significant increase in the latency to find the odor stimulus in the buried pellet test and a significant reduction in the interest to investigate the novel juvenile subjects in the social recognition test, indicating OD. In miRNAs analysis we observed a significant increase of miR-146a expression in the OB of T2D rats when compared to controls. This increase in miR-146a correlated with the overexpression of IL-1β in the OB of T2D rats. The present results showed that OD in T2D rats is associated with IL-1β mediated-inflammation and miR-146a overexpression, suggesting that high levels of IL-1β could trigger miR-146a upregulation as a negative feedback of the inflammatory response in the OB of T2D rats.
Collapse
Affiliation(s)
- Adriana Jiménez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Diana Organista-Juárez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Areli Torres-Castro
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México.,, IMSS Hospital General Regional 1 Dr. Carlos Mac Gregor Sánchez Navarro, Ciudad de México, México
| | - Mara A Guzmán-Ruíz
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Enrique Estudillo
- Laboratorio de Reprogramación Celular IFC/UNAM, Instituto Nacional de Neurología y Neurocirugía "Manuel Velasco Suárez,", Ciudad de México, México
| | - Rosalinda Guevara-Guzmán
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México.
| |
Collapse
|
14
|
Jiang H, Zhai T, Yu Y, Li X, Gong P, Zhang X, Li G, Li J. Delayed IL-12 production by macrophages during Toxoplasma gondii infection is regulated by miR-187. Parasitol Res 2020; 119:1023-1033. [PMID: 32065264 DOI: 10.1007/s00436-019-06588-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 12/22/2019] [Indexed: 10/25/2022]
Abstract
Toxoplasma gondii is an important zoonotic protozoan worldwide which infects most of warm-blooded mammals and birds, including human, and cause toxoplasmosis. As an intracellular parasite, T. gondii must evade host immune surveillance, such as IL-12 and IFN-γ, in order to survive and multiply in macrophages and other host cells. By delaying IL-12 secretion of host macrophages within 24 h after infection, T. gondii ensures not only self-survival but also the establishment of chronic infection of host cells. MicroRNA plays an important role in regulating gene transcription and translation. The mechanisms of IL-12 production during T. gondii infection are still unknown. Thus, understanding how the parasites manipulate IL-12 production by host macrophage is critical for the effective prevention and therapy of T. gondii infection. In the present study, regulation of delayed macrophage IL-12 production during T. gondii infection was explored. We found that the production of IL-12 after T. gondii infection was inhibited during the first 24 h and then resumed. The expression pattern of miR-187 production was consistent with the production pattern of IL-12 during T. gondii infection. The downregulation of miR-187 promoted Akt and P65 phosphorylation and delayed IL-12 production at late stage (after 24 h) of T. gondii infection. Dual-luciferase reporter assay indicated that MiR-187 targeted the NFKBIZ gene. Our results suggested that the delayed IL-12 production in mouse macrophages during T. gondii infection was regulated by miR-187.
Collapse
Affiliation(s)
- Heng Jiang
- Key Laboratory of Zoonosis Research, Ministry of Education; College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, China
| | - Tao Zhai
- Key Laboratory of Zoonosis Research, Ministry of Education; College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, China
| | - Yanhui Yu
- Key Laboratory of Zoonosis Research, Ministry of Education; College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, China
| | - Xin Li
- Key Laboratory of Zoonosis Research, Ministry of Education; College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, China
| | - Pengtao Gong
- Key Laboratory of Zoonosis Research, Ministry of Education; College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, China
| | - Xichen Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education; College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, China
| | - Guojiang Li
- Jilin Agricultural Science and Technology University, Jilin, China.
| | - Jianhua Li
- Key Laboratory of Zoonosis Research, Ministry of Education; College of Veterinary Medicine, Jilin University, 5333 Xian Road, Changchun, 130062, China. .,Jilin Agricultural Science and Technology University, Jilin, China.
| |
Collapse
|
15
|
Huang H, Cui G, Tang H, Kong L, Wang X, Cui C, Xiao Q, Ji H. Silencing of microRNA-146a alleviates the neural damage in temporal lobe epilepsy by down-regulating Notch-1. Mol Brain 2019; 12:102. [PMID: 31796120 PMCID: PMC6892218 DOI: 10.1186/s13041-019-0523-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 11/14/2019] [Indexed: 01/16/2023] Open
Abstract
This study aimed to evaluate the specific regulatory roles of microRNA-146a (miRNA-146a) in temporal lobe epilepsy (TLE) and explore the related regulatory mechanisms. A rat model of TLE was established by intraperitoneal injection of lithium chloride-pilocarpine. These model rats were injected intracerebroventricularly with an miRNA-146a inhibitor and Notch-1 siRNA. Then, neuronal damage and cell apoptosis in the cornu ammonis (CA) 1 and 3 regions of the hippocampus were assessed. SOD and MDA levels in the hippocampus were detected by chromatometry, and IL-1β, IL-6, and IL-18 levels were detected by ELISA. Then, we evaluated the expression levels of caspase-9, GFAP, Notch-1, and Hes-1 in the hippocampus. The interaction between Notch-1 and miRNA-146a was assessed by a dual luciferase reporter gene assay. A rat model of TLE was successfully established, which exhibited significantly increased miRNA-146a expression in the hippocampus. Silencing of miRNA-146a significantly alleviated the neuronal damage and cell apoptosis in the CA1 and CA3 regions of the hippocampus in TLE rats and decreased MDA, IL-1β, IL-6, and IL-18 levels and increased SOD levels in the hippocampus of TLE rats. In addition, silencing of miRNA-146a significantly decreased the expression levels of caspase-9, GFAP, Notch-1, and Hes-1 in the hippocampus of TLE rats. Notch-1 was identified as a target of miRNA-146a and silencing of Notch-1 aggravated the neuronal damage in the CA1 and CA3 regions. Silencing of miRNA-146a alleviated the neuronal damage in the hippocampus of TLE rats by down-regulating Notch-1.
Collapse
Affiliation(s)
- Hui Huang
- Department of Neurology, Huaibei People's Hospital, No. 66, Huaihai West Road, Huaibei City, 235000, Anhui Province, China
| | - Guiyun Cui
- Epilepsy Center, Affiliated Hospital, Xuzhou Medical University, No. 99, Huaihai West Road, Xuzhou City, 221002, Jiangsu Province, China
| | - Hai Tang
- Epilepsy Center, Affiliated Hospital, Xuzhou Medical University, No. 99, Huaihai West Road, Xuzhou City, 221002, Jiangsu Province, China
| | - Lingwen Kong
- Epilepsy Center, Affiliated Hospital, Xuzhou Medical University, No. 99, Huaihai West Road, Xuzhou City, 221002, Jiangsu Province, China
| | - Xiaopeng Wang
- Epilepsy Center, Affiliated Hospital, Xuzhou Medical University, No. 99, Huaihai West Road, Xuzhou City, 221002, Jiangsu Province, China
| | - Chenchen Cui
- Epilepsy Center, Affiliated Hospital, Xuzhou Medical University, No. 99, Huaihai West Road, Xuzhou City, 221002, Jiangsu Province, China
| | - Qihua Xiao
- Epilepsy Center, Affiliated Hospital, Xuzhou Medical University, No. 99, Huaihai West Road, Xuzhou City, 221002, Jiangsu Province, China.
| | - Huiming Ji
- Medical Laboratory, Affiliated Hospital, Xuzhou Medical University, No. 99, Huaihai West Road, Xuzhou City, 221002, Jiangsu Province, China.
| |
Collapse
|
16
|
Wang L, Song L, Chen X, Suo J, Ma Y, Shi J, Liu K, Chen G. microRNA-139-5p confers sensitivity to antiepileptic drugs in refractory epilepsy by inhibition of MRP1. CNS Neurosci Ther 2019; 26:465-474. [PMID: 31750616 PMCID: PMC7080432 DOI: 10.1111/cns.13268] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 10/25/2019] [Accepted: 10/31/2019] [Indexed: 12/12/2022] Open
Abstract
Aim Drug resistance is an intractable issue urgently needed to be overcome for improving efficiency of antiepileptic drugs in treating refractory epilepsy. microRNAs (miRNAs) have been proved as key regulators and therapeutic targets in epilepsy. Accordingly, the aim of the present study was to identify a novel differentially expressed miRNA which could improve the efficiency of antiepileptic drugs during the treatment of refractory epilepsy. Methods and Results Serum samples were collected from children with refractory epilepsy. An in vivo refractory epilepsy model was developed in SD rats by electrical amygdala kindling. We identified that miR‐139‐5p was decreased and multidrug resistance‐associated protein 1 (MRP1) was remarkably upregulated in the serum samples from children with refractory epilepsy and the brain tissues from rat models of refractory epilepsy. After phenobarbitone injection in rat models of refractory epilepsy, the after discharging threshold in kindled amygdala was detected to screen out drug‐resistant rats. Dual‐luciferase reporter gene assay demonstrated that MRP1 was a target of miR‐139‐5p. In order to evaluate the effect of miR‐139‐5p/MRP1 axis on drug resistance of refractory epilepsy, we transfected plasmids into the hippocampus of drug‐resistant rats to alter the expression of miR‐139‐5p and MRP1. TUNEL staining and Nissl staining showed that miR‐139‐5p overexpression or MRP1 downregulation could reduce the apoptosis and promote survival of neurons, accompanied by alleviated neuronal damage. Conclusion Collectively, these results suggest an important role of miR‐139‐5p/MRP1 axis in reducing the resistance of refractory epilepsy to antiepileptic drugs.
Collapse
Affiliation(s)
- Li Wang
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Lifang Song
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Xiaoyi Chen
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Junfang Suo
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Yanli Ma
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Jinghe Shi
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Kai Liu
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| | - Guohong Chen
- Department of Neurology, Zhengzhou University Affiliated Children's Hospital (Zhengzhou Children's Hospital), Zhengzhou, China
| |
Collapse
|
17
|
Inhibiting effect of microRNA-187-3p on osteogenic differentiation of osteoblast precursor cells by suppressing cannabinoid receptor type 2. Differentiation 2019; 109:9-15. [DOI: 10.1016/j.diff.2019.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/12/2019] [Accepted: 07/12/2019] [Indexed: 12/25/2022]
|
18
|
Abstract
A rapidly growing body of evidence supports the premise that neuroinflammation plays an important role in initiating and sustaining seizures in a range of pediatric epilepsies. Clinical and experimental evidence indicate that neuroinflammation is both an outcome and a contributor to seizures. In this manner, seizures that arise from an initial insult (e.g. infection, trauma, genetic mutation) contribute to an inflammatory response that subsequently promotes recurrent seizures. This cyclical relationship between seizures and neuroinflammation has been described as a 'vicious cycle.' Studies of human tissue resected for surgical treatment of refractory epilepsy have reported activated inflammatory and immune signaling pathways, while animal models have been used to demonstrate that key inflammatory mediators lead to increased seizure susceptibility. Further characterization of the molecular mechanisms involved in this cycle may ultimately enable the development of new therapeutic approaches for the treatment of epilepsy. In this brief review we focus on key inflammatory mediators that have become prominent in recent literature of epilepsy, including newly characterized microRNAs and their potential role in neuroinflammatory signaling.
Collapse
Affiliation(s)
- Shruti Bagla
- Division of Hematology/Oncology, Department of Pediatrics, Room 3L22, Children's Hospital of Michigan, 3901 Beaubien Blvd, Detroit, MI 48201, USA
| | - Alan A Dombkowski
- Division of Clinical Pharmacology and Toxicology, Department of Pediatrics, Room 3L22, Children's Hospital of Michigan, 3901 Beaubien Blvd, Detroit, MI 48201, USA
| |
Collapse
|
19
|
Li Z, Lin C, Zhao L, Zhou L, Pan X, Quan J, Peng X, Li W, Li H, Xu J, Xu W, Guan X, Chen Y, Lai Y. Oncogene miR-187-5p is associated with cellular proliferation, migration, invasion, apoptosis and an increased risk of recurrence in bladder cancer. Biomed Pharmacother 2018; 105:461-469. [PMID: 29883941 DOI: 10.1016/j.biopha.2018.05.122] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/21/2018] [Accepted: 05/23/2018] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Bladder cancer, the ninth-most-common malignancy worldwide with an estimated 356,000 new cases and 145,000 deaths annually, has a propensity to relapse, requiring lifelong monitoring after diagnosis. 75% patients diagnosed with BC are non-muscle invasive BC and over 50% of them experience recurrences within 6-12 years of initial diagnosis. miRNA are small, noncoding RNA and shown to be oncogenes or anti-oncogenes in bladder cancer, contributing to numerous BC cell processes, including cell proliferation, differentiation, migration and apoptosis. METHODS RT-qPCR were performed to detect the expression of miR-187-5p in tissues and cell lines, After which, clinicopathological variables and the prognostic value of altered miR-187-5p expression in BC was analyzed with the 48 formalin-fixed paraffin-embedded BC samples. Moreover, Cell functional assays (wound healing assay, CCK-8 assay, transwell assay and flow cytometry assay) were performed to explore the relationship between miR-187-5p expression and cell proliferation, migration, invasion and apoptosis in BC. RESULTS Up-regulation of miR-187-5p was observed in BC tissues and BC cell lines. Cox proportional hazard regression analysis demonstrated that the patients with low expression of miR-187-5p experience lower risks of recurrence in the univariate and multivariate analysis. The Kaplan-Meier recurrence-free curves suggested that the patients with low expression of miR-187-5p experience lower risks of recurrence. Up-regulation of miR-187-5p promotes cell proliferation and mobility and inhibits the apoptosis of 5637 and UM-UC-3 cell, while down-regulation of miR-187-5p reverses these effects. CONCLUSIONS The results of our study demonstrated that oncogene miR-187-5p is associated with cellular proliferation, migration, invasion, apoptosis and an increased risk of recurrence in bladder cancer.
Collapse
Affiliation(s)
- Zuwei Li
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; Department of Urology, Shantou University Medical College, Shantou, Guangdong 515041, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Canbin Lin
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; Department of Urology, Shantou University Medical College, Shantou, Guangdong 515041, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Liwen Zhao
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Liang Zhou
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Xiang Pan
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Jing Quan
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Xiqi Peng
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; Department of Urology, Shantou University Medical College, Shantou, Guangdong 515041, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Weiqing Li
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; Department of Urology, Shantou University Medical College, Shantou, Guangdong 515041, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Hang Li
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China
| | - Jinling Xu
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Weijie Xu
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Xin Guan
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China
| | - Yun Chen
- Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China.
| | - Yongqing Lai
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, PR China; The Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Institute of Urology of Shenzhen PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, PR China.
| |
Collapse
|
20
|
Tang C, Gu Y, Wang H, Wu H, Wang Y, Meng Y, Han Z, Gu Y, Ma W, Jiang Z, Song Y, Na M, Lu D, Lin Z. Targeting of microRNA-21-5p protects against seizure damage in a kainic acid-induced status epilepticus model via PTEN-mTOR. Epilepsy Res 2018; 144:34-42. [PMID: 29751355 DOI: 10.1016/j.eplepsyres.2018.05.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 04/29/2018] [Accepted: 05/03/2018] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Studies have shown that microRNAs play a role in the development of epilepsy by regulating downstream target messenger (m)RNA. The present study aims to determine the changes associated with microRNA-21-5p (miR-21-5p) during epileptogenesis in a kainic acid rat model, and to assess whether the PTEN-mTOR pathway is a target of miR-21-5p. METHOD Reverse transcription polymerase chain reaction (RT-PCR) was used to examine the quantitative expressions of miR-21-5p and PTEN, and Western blotting was used to test the activity of mTOR in the acute, latent, and chronic stages of epileptogenesis. The antagomir of miR-21-5p was injected into the intracerebroventricular space using a microsyringe. Neuronal death and epilepsy discharge were assessed by Nissl staining and electroencephalography (EEG), respectively. The Morris water maze (MWM) was used to assess the cognitive impairment in rats after status epilepticus (SE). RESULTS Both miR-21-5p and mTOR were upregulated and PTEN was downregulated in rats during acute, latent, and chronic stages of epileptogenesis when compared with those of the control. After using antagomir miR-21-5p in vivo, miR-21-5p and mTOR decreased and the expression of PTEN increased compared with that in the SE model. The silencing of miR-21-5p diminished the number of abnormal spikes on EEG and decreased the number of neuron deletions on Nissl staining. The cognitive and memory impairment caused by epilepsy could also be improved after miR-21-5p knockdown in vivo. CONCLUSION The results of the present study demonstrate that PTEN-mTOR is the target of miR-21-5p in a kainic acid model of epilepsy. The knockout of miR-21-5p decreases the neuronal damage in stages of epileptogenesis. The miR-21-5p/PTEN/mTOR axis may be a potential target for preventing and treating seizures and epileptic damage.
Collapse
Affiliation(s)
- Chongyang Tang
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Yunhe Gu
- Department of Pathology, The First Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Haiyang Wang
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Hongmei Wu
- Department of Pathology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Yu Wang
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Yao Meng
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Zhibin Han
- 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.
| | - Wei Ma
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Zhenfeng Jiang
- Department of Neurosurgery, The First Affiliated Hospital, Harbin Medical University, Harbin, China.
| | - Yuanyuan Song
- 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.
| | - Dunyue Lu
- 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.
| |
Collapse
|
21
|
Gong GH, An FM, Wang Y, Bian M, Wang D, Wei CX. MiR-153 regulates expression of hypoxia-inducible factor-1α in refractory epilepsy. Oncotarget 2018; 9:8542-8547. [PMID: 29492215 PMCID: PMC5823594 DOI: 10.18632/oncotarget.24012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 11/13/2017] [Indexed: 01/28/2023] Open
Abstract
Mesial temporal lobe epilepsy (mTLE), the most common type of temporal lobe epilepsy (TLE), is particularly relevant due to its high frequency of therapeutic resistance of anti-epileptic therapies. MicroRNAs (miRNAs) have been shown to be dysregulated in epilepsy and neurodegenerative diseases, and we hypothesized that miRNAs could be involved in the pathogenesis of MTLE. The present study aimed to explore the expression and functions of miRNA-153 in mTLE. The expression levels of miRNA-153 in refractory TLE patients were evaluated. The bioinformatics analysis showed that the potential target genes of miR-153 were involved in biological processes, molecular functions, and cellular components. miRNA-153 is significantly dysregulated in temporal cortex and plasma of mTLE patients. We identify HIF-1α as a direct target of miRNA-153, and luciferase reporter assays demonstrated that miR-153 could regulate the HIF-1αexpression via 3'-UTR pairing. These data suggest that miR-153 might represent a useful biomarker and treatment target for patients with mTLE.
Collapse
Affiliation(s)
- Guo-Hua Gong
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China.,Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China.,First Clinical Medical of Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, P.R. China
| | - Feng-Mao An
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China.,Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
| | - Yu Wang
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China.,Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
| | - Ming Bian
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China.,Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
| | - Di Wang
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China.,Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
| | - Cheng-Xi Wei
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia, P.R. China.,Inner Mongolia Key Laboratory of Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
| |
Collapse
|
22
|
Tiwari D, Peariso K, Gross C. MicroRNA-induced silencing in epilepsy: Opportunities and challenges for clinical application. Dev Dyn 2018; 247:94-110. [PMID: 28850760 PMCID: PMC5740004 DOI: 10.1002/dvdy.24582] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 07/20/2017] [Accepted: 08/10/2017] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs are master regulators of gene expression. Single microRNAs influence multiple proteins within diverse molecular pathways and networks. Therefore, changes in levels or activity of microRNAs can have profound effects on cellular function. This makes dysregulated microRNA-induced silencing an attractive potential disease mechanism in complex disorders like epilepsy, where numerous cellular pathways and processes are affected simultaneously. Indeed, several years of research in rodent models have provided strong evidence that acute or recurrent seizures change microRNA expression and function. Moreover, altered microRNA expression has been observed in brain and blood from patients with various epilepsy disorders, such as tuberous sclerosis. MicroRNAs can be easily manipulated using sense or antisense oligonucleotides, opening up opportunities for therapeutic intervention. Here, we summarize studies using these techniques to identify microRNAs that modulate seizure susceptibility, describe protein targets mediating some of these effects, and discuss cellular pathways, for example neuroinflammation, that are controlled by epilepsy-associated microRNAs. We critically assess current gaps in knowledge regarding target- and cell-specificity of microRNAs that have to be addressed before clinical application as therapeutic targets or biomarkers. The recent progress in understanding microRNA function in epilepsy has generated strong momentum to encourage in-depth mechanistic studies to develop microRNA-targeted therapies. Developmental Dynamics 247:94-110, 2018. © 2017 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Durgesh Tiwari
- Cincinnati Children’s Hospital Medical Center, Division of Neurology, Cincinnati, Ohio
| | - Katrina Peariso
- Cincinnati Children’s Hospital Medical Center, Division of Neurology, Cincinnati, Ohio
- University of Cincinnati, Department of Pediatrics, Cincinnati, Ohio
| | - Christina Gross
- Cincinnati Children’s Hospital Medical Center, Division of Neurology, Cincinnati, Ohio
- University of Cincinnati, Department of Pediatrics, Cincinnati, Ohio
| |
Collapse
|
23
|
Anticonvulsant Effect of Swertiamarin Against Pilocarpine-Induced Seizures in Adult Male Mice. Neurochem Res 2017; 42:3103-3113. [PMID: 28681096 DOI: 10.1007/s11064-017-2347-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 06/13/2017] [Accepted: 06/29/2017] [Indexed: 12/28/2022]
Abstract
Epilepsy is one of the common and major neurological disorders, approximately a third of the individuals with epilepsy suffer from seizures and not able to successfully respond to available medications. Current study was designed to investigate whether Swertiamarin (Swe) had anticonvulsant activity in the pilocarpine (PILO)-treated mice. Thirty minutes prior to the PILO (280 mg/kg) injection, the mice were administrated with Swe (50, 150, and 450 mg/kg) and valproate sodium (VPA, 200 mg/kg) once. Seizures and electroencephalography (EEG) were observed, and then the mice were killed for Nissl, Fluoro-jade B (FJB) staining. Astrocytic activation was examined in the hippocampus. Western blot analysis was used to examine the expressions of interleukin-1β (IL-1β), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and interleukin-10 (IL-10). The results indicated that pretreatment with Swe (150, 450 mg/kg) and VPA (200 mg/kg) significantly delayed the onset of the first convulsion and reduced the incidence of status epilepticus and mortality. Analysis of EEG recordings demonstrated that Swe (150, 450 mg/kg) and VPA (200 mg/kg) sharply decreased epileptiform discharges. Furthermore, Nissl and FJB staining revealed that Swe (150, 450 mg/kg) and VPA (200 mg/kg) relieved the neuronal damage. Additionally, Swe (450 mg/kg) dramatically inhibited astrocytic activation. Western blot analysis showed that Swe (450 mg/kg) significantly decreased the expressions of IL-1β, IL-6, TNF-α and elevated the expression of IL-10. Taken together, these findings revealed that Swe exerted anticonvulsant effects on PILO-treated mice. Further studies are encouraged to investigate these beneficial effects of Swe as an adjuvant in epilepsy.
Collapse
|
24
|
Abstract
This study aimed to explore the role of aberrant miRNA expression in epilepsy and to identify more potential genes associated with epileptogenesis.The miRNA expression profile of GSE49850, which included 20 samples from the rat epileptic dentate gyrus at 7, 14, 30, and 90 days after electrical stimulation and 20 additional samples from sham time-matched controls, was downloaded from the Gene Expression Omnibus database. The significantly differentially expressed miRNAs were identified in stimulated samples at each time point compared to time-matched controls, respectively. The target genes of consistently differentially expressed miRNAs were screened from miRDB and microRNA.org databases, followed by Gene Ontology (GO) and pathway enrichment analysis and regulatory network construction. The overlapping target genes for consistently differentially expressed miRNAs were also identified from these 2 databases. Furthermore, the potential binding sites of miRNAs and their target genes were analyzed.Rno-miR-187-3p was consistently downregulated in stimulated groups compared with time-matched controls. The predicted target genes of rno-miR-187-3p were enriched in different GO terms and pathways. In addition, 7 overlapping target genes of rno-miR-187-3p were identified, including NFS1, PAQR4, CAND1, DCLK1, PRKAR2A, AKAP3, and KCNK10. These 7 overlapping target genes were determined to have a different number of matched binding sites with rno-miR-187-3p.Our study suggests that miR-187-3p may play an important role in epilepsy development and progression via regulating numerous target genes, such as NFS1, CAND1, DCLK1, AKAP3, and KCNK10. Determining the underlying mechanism of the role of miR-187-3p in epilepsy may make it a potential therapeutic option.
Collapse
Affiliation(s)
- Suya Zhang
- Department of Neurology, Shanghai Baoshan District Hospital of Integrated Traditional and Western Medicine
| | - Yubin Kou
- Department of General Surgery, Shuguang Hospital Baoshan Branch
| | - Chunmei Hu
- Department of Neurology, Shuguang Hospital Baoshan Branch
| | - Yan Han
- Department of Neurology, Changhai Hospital, Shanghai, China
| |
Collapse
|
25
|
Scorza CA, Marques MJG, Gomes da Silva S, Naffah-Mazzacoratti MDG, Scorza FA, Cavalheiro EA. Status epilepticus does not induce acute brain inflammatory response in the Amazon rodent Proechimys, an animal model resistant to epileptogenesis. Neurosci Lett 2017; 668:169-173. [PMID: 28235602 DOI: 10.1016/j.neulet.2017.02.049] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 01/31/2017] [Accepted: 02/20/2017] [Indexed: 12/23/2022]
Abstract
Mesial temporal lobe epilepsy is a serious brain disorder in adults that is often preceded by an initial brain insult, such as status epilepticus (SE), that after a latent period leads to recurrent seizures. Post-SE models are widely used for studies on epileptogenic processes. Previous findings of our laboratory suggested that the Neotropical rodents Proechimys exhibit endogenous antiepileptogenic mechanisms in post-SE models. Strong body of research supports that SE triggers a rapid and dramatic upregulation of inflammatory mediators and vascular endothelial growth factor (VEGF). In this work we found that, in the epilepsy-resistant Proechimys, hippocampal and cortical levels of inflammatory cytokines (IL-1β, IL-6, IL-10, TNF-α) and VEGF remained unchanged 24h after SE, strongly contrasting to the high levels of post-SE changes observed in Wistar rats. Furthermore, substantial differences in the brain baseline levels of these proteins were encountered between animal species studied. Since inflammatory cytokines and VEGF have been recognized as major orchestrators of the epileptogenic process, our results suggest their role in the antiepileptogenic mechanisms previously described in Proechimys.
Collapse
Affiliation(s)
- Carla A Scorza
- Disciplina de Neurociência, Escola Paulista de Medicina/Universidade Federal de São Paulo, Brazil.
| | - Marcia J G Marques
- Disciplina de Neurociência, Escola Paulista de Medicina/Universidade Federal de São Paulo, Brazil
| | - Sérgio Gomes da Silva
- Hospital Israelita Albert Einstein, São Paulo, SP, Brazil; Núcleo de Pesquisas Tecnológicas, Universidade de Mogi das Cruzes, Mogi das Cruzes, SP, Brazil.
| | | | - Fulvio A Scorza
- Disciplina de Neurociência, Escola Paulista de Medicina/Universidade Federal de São Paulo, Brazil
| | - Esper A Cavalheiro
- Disciplina de Neurociência, Escola Paulista de Medicina/Universidade Federal de São Paulo, Brazil
| |
Collapse
|
26
|
Haenisch S, von Rüden EL, Wahmkow H, Rettenbeck ML, Michler C, Russmann V, Bruckmueller H, Waetzig V, Cascorbi I, Potschka H. miRNA-187-3p-Mediated Regulation of the KCNK10/TREK-2 Potassium Channel in a Rat Epilepsy Model. ACS Chem Neurosci 2016; 7:1585-1594. [PMID: 27609046 DOI: 10.1021/acschemneuro.6b00222] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Regulatory RNAs play a key role in the regulation of protein expression patterns in neurological diseases. Here we studied the regulation of miRNAs in a chronic rat model of temporal lobe epilepsy. The analysis was focused on a putative link with pharmacoresponsiveness as well as the functional implications of the regulation of a selected miRNA. The findings did not reveal a difference in hippocampal miRNA expression between phenobarbital responders and nonresponders. However, when comparing rats following status epilepticus with control rats we identified 13 differentially expressed miRNAs with miRNA-187-3p being most strongly regulated. mRNAs encoding KCNK10/TREK-2 as well as DYRK2 were confirmed as targets of miRNA-187-3p. Expression of the potassium channel protein KCNK10/TREK-2 negatively correlated with hippocampal miRNA-187-3p expression and proved to be upregulated in the chronic phase of the epilepsy model. In conclusion, our data do not suggest a relevant impact of miRNA expression patterns on pharmacoresponsiveness. However, we confirmed regulation of miRNA-187-3p and demonstrated that it impacts the expression of the two-pore domain potassium channel protein KCNK10/TREK-2. Considering evidence from brain ischemia models, KCNK10/TREK-2 upregulation might serve a protective function with a beneficial impact on astrocytic potassium and glutamate homeostasis.
Collapse
Affiliation(s)
- Sierk Haenisch
- Institute of Experimental and Clinical Pharmacology, University Hospital Schleswig-Holstein , 24105 Campus Kiel, Germany
| | - Eva-Lotta von Rüden
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University (LMU) , 80539 Munich, Germany
| | - Hannes Wahmkow
- Institute of Experimental and Clinical Pharmacology, University Hospital Schleswig-Holstein , 24105 Campus Kiel, Germany
| | - Maruja L Rettenbeck
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University (LMU) , 80539 Munich, Germany
| | - Christina Michler
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University (LMU) , 80539 Munich, Germany
| | - Vera Russmann
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University (LMU) , 80539 Munich, Germany
| | - Henrike Bruckmueller
- Institute of Experimental and Clinical Pharmacology, University Hospital Schleswig-Holstein , 24105 Campus Kiel, Germany
| | - Vicki Waetzig
- Institute of Experimental and Clinical Pharmacology, University Hospital Schleswig-Holstein , 24105 Campus Kiel, Germany
| | - Ingolf Cascorbi
- Institute of Experimental and Clinical Pharmacology, University Hospital Schleswig-Holstein , 24105 Campus Kiel, Germany
| | - Heidrun Potschka
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University (LMU) , 80539 Munich, Germany
| |
Collapse
|
27
|
Alsharafi WA, Xiao B, Li J. MicroRNA-139-5p negatively regulates NR2A-containing NMDA receptor in the rat pilocarpine model and patients with temporal lobe epilepsy. Epilepsia 2016; 57:1931-1940. [PMID: 27731509 DOI: 10.1111/epi.13568] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVES Regulation of N-methyl-d-aspartate (NMDA) subunits NR2A and NR2B expression during status epilepticus (SE) remains incompletely understood. Here we explored the role of brain-enriched microRNA (miR)-139-5p in this process. METHODS miRNA microarray was performed to examine changes in miRNA expression in the rat pilocarpine model following NMDA-receptor blockade. The dynamic expression patterns of miR-139-5p, NR2A, and NR2B levels were measured in rats during the three phases of temporal lobe epilepsy (TLE) development using quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot. Similar expression methods were applied to hippocampi obtained from patients with TLE and from normal controls. Moreover, miR-139-5p agomir and antagomir were utilized to explore the role of miR-139-5p in determining NMDA-receptor subunit expression patterns. RESULTS We identified 18 miRNAs that were significantly altered in the rat pilocarpine model following NMDA-receptor blockade. Of these, miR-139-5p was significantly up-regulated and Grin2A was predicted as its potential putative target. In patients with TLE, miR-139-5p expression was significantly down-regulated, whereas NR2A and NR2B levels were significantly up-regulated. In the rat model of SE, miR-139-5p expression was down-regulated while NR2A was up-regulated in the acute and chronic phases, but not in the latent phase. NR2B expression was up-regulated during the three phases of TLE development. Overexpression of miR-139-5p decreased, whereas depletion of miR-139-5p enhanced the expression levels of NR2A, but not NR2B, induced by pilocarpine treatment. Of interest, NMDA nonselective antagonist and NR2A selective antagonist enhanced miR-139-5p levels suppressed by pilocarpine treatment, whereas the NR2B selective antagonist was ineffective. SIGNIFICANCE These findings elucidate the potential role of miR-139-5p in NMDA-receptor involvement in TLE development and may provide novel therapeutic targets for the future treatment of TLE.
Collapse
Affiliation(s)
- Walid A Alsharafi
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jing Li
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| |
Collapse
|
28
|
Lu Z, Liu R, Huang E, Chu Y. MicroRNAs: New regulators of IL-22. Cell Immunol 2016; 304-305:1-8. [PMID: 27221197 DOI: 10.1016/j.cellimm.2016.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/11/2016] [Accepted: 05/16/2016] [Indexed: 12/18/2022]
Abstract
Interleukin-22 (IL-22) is a cytokine that belongs to the IL-10 family of interleukins. It can be produced by T helper 22 (Th22) cells, T helper 1 (Th1) cells, T helper 17 (Th17) cells, natural killer 22 (NK22) cells, natural killer T (NKT) cells, innate lymphoid cells (ILCs), and γδ T cells. IL-22 acts via binding to a heterodimeric transmembrane receptor complex that consists of IL-22R1 and IL-10R2 and mainly contributes to the tissue repair and host defense. Transcription factors such as retinoid orphan receptor γt (RORγt) and signal transducer and activator of transcription 3 (STAT3), have been reported to play important roles in regulation of IL-22 expression. Recently, it has been demonstrated in several studies that microRNAs (miRNAs) potently regulate expression of interleukins, including production of IL-22. Here, we review current knowledge about regulators of IL-22 expression with a particular emphasis on the role of miRNAs.
Collapse
Affiliation(s)
- Zhou Lu
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, People's Republic of China
| | - Ronghua Liu
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, People's Republic of China
| | - Enyu Huang
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, People's Republic of China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, People's Republic of China; Biotherapy Research Center, Fudan University, Shanghai 200032, People's Republic of China.
| |
Collapse
|
29
|
Cattani AA, Allene C, Seifert V, Rosenow F, Henshall DC, Freiman TM. Involvement of microRNAs in epileptogenesis. Epilepsia 2016; 57:1015-26. [PMID: 27207608 DOI: 10.1111/epi.13404] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2016] [Indexed: 12/12/2022]
Abstract
Patients who have sustained brain injury or had developmental brain lesions present a non-negligible risk for developing delayed epilepsy. Finding therapeutic strategies to prevent development of epilepsy in at-risk patients represents a crucial medical challenge. Noncoding microRNA molecules (miRNAs) are promising candidates in this area. Indeed, deregulation of diverse brain-specific miRNAs has been observed in animal models of epilepsy as well as in patients with epilepsy, mostly in temporal lobe epilepsy (TLE). Herein we review deregulated miRNAs reported in epilepsy with potential roles in key molecular and cellular processes underlying epileptogenesis, namely neuroinflammation, cell proliferation and differentiation, migration, apoptosis, and synaptic remodeling. We provide an up-to-date listing of miRNAs altered in epileptogenesis and assess recent functional studies that have interrogated their role in epilepsy. Last, we discuss potential applications of these findings for the future development of disease-modifying therapeutic strategies for antiepileptogenesis.
Collapse
Affiliation(s)
| | | | - Volker Seifert
- Department of Neurosurgery, Goethe University, Frankfurt, Germany
| | - Felix Rosenow
- Department of Epileptology, Goethe-University, Frankfurt, Germany
| | - David C Henshall
- Physiology & Medical Physics Department, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Thomas M Freiman
- Department of Neurosurgery, Goethe University, Frankfurt, Germany
| |
Collapse
|