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Elballal MS, Mohammed OA, Zaki MB, Abulsoud AI, Tabaa MME, Elazazy O, Abd-Elmawla MA, El-Dakroury WA, Abdel Mageed SS, Rashad AA, Abdelmaksoud NM, Elrebehy MA, Nomier Y, Abdel-Reheim MA, Oraby MA, Doghish AS. miRNAs as modulators of neuroinflammation and excitotoxicity: Implications for stroke therapeutics. Pathol Res Pract 2024; 253:155093. [PMID: 38184962 DOI: 10.1016/j.prp.2024.155093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 12/29/2023] [Accepted: 01/02/2024] [Indexed: 01/09/2024]
Abstract
Stroke is a widespread neurological disorder associated with physical disabilities, mortality, and economic burden. In recent decades, substantial progress has been achieved in reducing the impact of this public health problem. However, further understanding of the pathophysiology of stroke and the underlying genetic pathways is required. The pathological mechanisms of stroke comprise multifaceted molecular cascades regulated by various microRNAs (miRNAs). An increasing number of studies have highlighted the role of miRNAs, which have received much attention during the last decades as an important class of post-transcriptional regulators. It was shown that miRNAs exert their role in the etiology of stroke via mediating excitotoxicity and neuroinflammation. Additionally, miRNAs could be helpful as non-invasive or minimally invasive biomarkers and therapeutic agents. Thus, the current review focused on the interplay of these miRNAs in stroke pathology to upgrade the existing therapeutic strategies.
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Affiliation(s)
- Mohammed S Elballal
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Osama A Mohammed
- Department of Pharmacology, College of Medicine, University of Bisha, Bisha 61922, Saudi Arabia
| | - Mohamed Bakr Zaki
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Menoufia 32897, Egypt
| | - Ahmed I Abulsoud
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt; Biochemistry Department, Faculty of Pharmacy, Heliopolis University, Cairo 11785, Egypt.
| | - Manar Mohammed El Tabaa
- Pharmacology & Environmental Toxicology, Environmental Studies & Research Institute (ESRI), University of Sadat City, Sadat City 32897, Menoufia, Egypt
| | - Ola Elazazy
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Mai A Abd-Elmawla
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Walaa A El-Dakroury
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Sherif S Abdel Mageed
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Ahmed A Rashad
- Department of Clinical Pharmacy and Pharmacy Practice, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | | | - Mahmoud A Elrebehy
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Yousra Nomier
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and health sciences, Sultan Qaboos University, Egypt
| | - Mustafa Ahmed Abdel-Reheim
- Department of Pharmaceutical Sciences, College of Pharmacy, Shaqra University, Shaqra 11961, Saudi Arabia; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni Suef 62521, Egypt.
| | - Mamdouh A Oraby
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt
| | - Ahmed S Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr City, Cairo 11829, Egypt; Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City 11231, Cairo, Egypt.
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2
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Suvarna V, Deshmukh K, Murahari M. miRNA and antisense oligonucleotide-based α-synuclein targeting as disease-modifying therapeutics in Parkinson's disease. Front Pharmacol 2022; 13:1034072. [PMID: 36506536 PMCID: PMC9728483 DOI: 10.3389/fphar.2022.1034072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/31/2022] [Indexed: 11/17/2022] Open
Abstract
α-synuclein is the synaptic protein majorly involved in neuronal dysfunction and death and it is well known for the last two decades as a hallmark of Parkinson's disease. Alpha-synuclein is involved in neurodegeneration mediated through various neurotoxic pathways, majorly including autophagy or lysosomal dysregulation, mitochondrial disruption, synaptic dysfunction, and oxidative stress. Moreover, the alpha-synuclein aggregation has been associated with the development of several neurodegenerative conditions such as various forms of Parkinson's disease. The recent discovery in oligonucleotide chemistry has developed potential alpha-synuclein targeting molecules for the treatment of neurodegenerative diseases. The present review article focuses on recent advances in the applications of oligonucleotides acting via alpha-synuclein targeting mechanisms and their implication in combating Parkinson's disease. Moreover, the article emphasizes the potential of miRNAs, and antisense oligonucleotides and the challenges associated with their use in the therapeutical management of Parkinson's disease.
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Affiliation(s)
- Vasanti Suvarna
- Department of Quality Assurance, SVKM’s Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Kajal Deshmukh
- Department of Quality Assurance, SVKM’s Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Manikanta Murahari
- Department of Pharmacy, Koneru Lakshmaiah Education Foundation, Vaddeswaram, AP, India,*Correspondence: Manikanta Murahari,
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3
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The Assessment of Endovascular Therapies in Ischemic Stroke: Management, Problems and Future Approaches. J Clin Med 2022; 11:jcm11071864. [PMID: 35407472 PMCID: PMC8999747 DOI: 10.3390/jcm11071864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/18/2022] [Accepted: 03/25/2022] [Indexed: 02/06/2023] Open
Abstract
Ischemic stroke accounts for over 80% of all strokes and is one of the leading causes of mortality and permanent disability worldwide. Intravenous administration of recombinant tissue plasminogen activator (rt-PA) is an approved treatment strategy for acute ischemic stroke of large arteries within 4.5 h of onset, and mechanical thrombectomy can be used for large arteries occlusion up to 24 h after onset. Improving diagnostic work up for acute treatment, reducing onset-to-needle time and urgent radiological access angiographic CT images (angioCT) and Magnetic Resonance Imaging (MRI) are real problems for many healthcare systems, which limits the number of patients with good prognosis in real world compared to the results of randomized controlled trials. The applied endovascular procedures demonstrated high efficacy, but some cellular mechanisms, following reperfusion, are still unknown. Changes in the morphology and function of mitochondria associated with reperfusion and ischemia-reperfusion neuronal death are still understudied research fields. Moreover, future research is needed to elucidate the relationship between continuously refined imaging techniques and the variable structure or physical properties of the clot along with vascular permeability and the pleiotropism of ischemic reperfusion lesions in the penumbra, in order to define targeted preventive procedures promoting long-term health benefits.
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Li S, Bi G, Han S, Huang R. MicroRNAs Play a Role in Parkinson’s Disease by Regulating Microglia Function: From Pathogenetic Involvement to Therapeutic Potential. Front Mol Neurosci 2022; 14:744942. [PMID: 35126050 PMCID: PMC8814625 DOI: 10.3389/fnmol.2021.744942] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 12/14/2021] [Indexed: 12/31/2022] Open
Abstract
Parkinson’s disease (PD) is a clinically common neurodegenerative disease of the central nervous system (CNS) characterized by loss of dopamine neurons in the substantia nigra. Microglia (MG), as an innate immune cell in the CNS, are involved in a variety of immunity and inflammatory responses in the CNS. A number of studies have shown that the overactivation of MG is one of the critical pathophysiological mechanisms underlying PD. MicroRNAs (miRNAs) are considered to be an important class of gene expression regulators and are involved in a variety of physiological and pathological mechanisms, including immunity and inflammation. In addition, miRNAs can affect the progress of PD by regulating the expression of various MG genes and the polarization state of the MG. Here, we summarize recent articles and describe the important role of MG pathological polarization in the progression of PD, the diverse mechanisms responsible for how miRNAs regulate MG, and the potential therapeutic prospects of miRNAs for PD. We also propose that the regulation of miRNAs may be a novel protective approach against the pathogenesis of PD.
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Affiliation(s)
- Silu Li
- Department of Rheumatology and Immunology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Guorong Bi
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Shunchang Han
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Rui Huang
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
- *Correspondence: Rui Huang,
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Inhibition of Ferroptosis Attenuates Glutamate Excitotoxicity and Nuclear Autophagy In A CLP Septic Mouse Model. Shock 2022; 57:694-702. [PMID: 35066511 DOI: 10.1097/shk.0000000000001893] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT Sepsis-associated encephalopathy (SAE) often manifests in severe diffuse cerebral dysfunction due to an aberrant systemic immune response to infection. The underlying pathophysiology of SAE is not entirely understood but is likely a multifactorial process that involves disruption in cell death mechanism. Ferroptosis is a novel form of programmed cell death characterized by iron accumulation and lipid peroxidation, leading to inflammatory cascade and glutamate release. We hypothesized that ferroptosis is involved in the glutamate-mediated excitotoxic neuron injury during the uncontrolled neural inflammatory process of SAE. Inhibiting ferroptosis with ferrostatin-1 (Fer-1) could alleviate glutamate excitotoxicity and reduce neuron death of SAE, potentially improving prognosis. We found that in the cecal ligation and puncture (CLP) sepsis model, ferroptosis occurred increasingly in the cerebrum, characterized by glutathione-dependent antioxidant enzyme glutathione peroxidase 4 (GPX4) inactivation, transferrin upregulation, mitochondria shrink and malondialdehyde (MDA) increased. Fer-1 treatment downregulated cerebral ferroptosis and alleviated glutamate excitotoxicity via dampening system xc-(SXC) and glutamate receptor N-methyl-D-asperate receptor subunit 2. Combined with an observed reduction in calcium transporter PLCG and PLCB activation, these processes ultimately protected the integrities of synapses and neurons during SAE. Fer-1 treatment also rescued sepsis-induced nuclear autophagy and improved the behaviors of tail suspension test and novel object recognition test in septic mice. Conclusively, our results suggested that inhibition of ferroptosis could attenuate glutamate excitotoxicity and SAE outcomes.
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Dong X, Cong S. MicroRNAs in Huntington's Disease: Diagnostic Biomarkers or Therapeutic Agents? Front Cell Neurosci 2021; 15:705348. [PMID: 34421543 PMCID: PMC8377808 DOI: 10.3389/fncel.2021.705348] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/20/2021] [Indexed: 01/01/2023] Open
Abstract
MicroRNA (miRNA) is a non-coding single-stranded small molecule of approximately 21 nucleotides. It degrades or inhibits the translation of RNA by targeting the 3′-UTR. The miRNA plays an important role in the growth, development, differentiation, and functional execution of the nervous system. Dysregulated miRNA expression has been associated with several pathological processes of neurodegenerative disorders, including Huntington’s disease (HD). Recent studies have suggested promising roles of miRNAs as biomarkers and potential therapeutic targets for HD. Here, we review the emerging role of dysregulated miRNAs in HD and describe general biology of miRNAs, their pathophysiological implications, and their potential roles as biomarkers and therapeutic agents.
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Affiliation(s)
- Xiaoyu Dong
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Shuyan Cong
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
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7
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Selivanov VA, Zagubnaya OA, Nartsissov YR, Cascante M. Unveiling a key role of oxaloacetate-glutamate interaction in regulation of respiration and ROS generation in nonsynaptic brain mitochondria using a kinetic model. PLoS One 2021; 16:e0255164. [PMID: 34343196 PMCID: PMC8330910 DOI: 10.1371/journal.pone.0255164] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/11/2021] [Indexed: 12/21/2022] Open
Abstract
Glutamate plays diverse roles in neuronal cells, affecting cell energetics and reactive oxygen species (ROS) generation. These roles are especially vital for neuronal cells, which deal with high amounts of glutamate as a neurotransmitter. Our analysis explored neuronal glutamate implication in cellular energy metabolism and ROS generation, using a kinetic model that simulates electron transport details in respiratory complexes, linked ROS generation and metabolic reactions. The analysis focused on the fact that glutamate attenuates complex II inhibition by oxaloacetate, stimulating the latter's transformation into aspartate. Such a mechanism of complex II activation by glutamate could cause almost complete reduction of ubiquinone and deficiency of oxidized form (Q), which closes the main stream of electron transport and opens a way to massive ROS generating transfer in complex III from semiquinone radicals to molecular oxygen. In this way, under low workload, glutamate triggers the respiratory chain (RC) into a different steady state characterized by high ROS generation rate. The observed stepwise dependence of ROS generation on glutamate concentration experimentally validated this prediction. However, glutamate's attenuation of oxaloacetate's inhibition accelerates electron transport under high workload. Glutamate-oxaloacetate interaction in complex II regulation underlies the observed effects of uncouplers and inhibitors and acceleration of Ca2+ uptake. Thus, this theoretical analysis uncovered the previously unknown roles of oxaloacetate as a regulator of ROS generation and glutamate as a modifier of this regulation. The model predicted that this mechanism of complex II activation by glutamate might be operative in situ and responsible for excitotoxicity. Spatial-time gradients of synthesized hydrogen peroxide concentration, calculated in the reaction-diffusion model with convection under a non-uniform local approximation of nervous tissue, have shown that overproduction of H2O2 in a cell causes excess of its level in neighbor cells.
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Affiliation(s)
- Vitaly A. Selivanov
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
- CIBER of Hepatic and Digestive Diseases (CIBEREHD) and Metabolomics Node at Spanish National Bioinformatics Institute (INB-ISCIII-ES- ELIXIR), Institute of Health Carlos III (ISCIII), Madrid, Spain
| | - Olga A. Zagubnaya
- Department of Mathematical Modeling and Statistical Analysis, Institute of Cytochemistry and Molecular Pharmacology, Moscow, Russia
| | - Yaroslav R. Nartsissov
- Department of Mathematical Modeling and Statistical Analysis, Institute of Cytochemistry and Molecular Pharmacology, Moscow, Russia
| | - Marta Cascante
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
- CIBER of Hepatic and Digestive Diseases (CIBEREHD) and Metabolomics Node at Spanish National Bioinformatics Institute (INB-ISCIII-ES- ELIXIR), Institute of Health Carlos III (ISCIII), Madrid, Spain
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8
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Lian L, Zhang Y, Liu L, Yang L, Cai Y, Zhang J, Xu S. Neuroinflammation in Ischemic Stroke: Focus on MicroRNA-mediated Polarization of Microglia. Front Mol Neurosci 2021; 13:612439. [PMID: 33488360 PMCID: PMC7817943 DOI: 10.3389/fnmol.2020.612439] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/30/2020] [Indexed: 12/19/2022] Open
Abstract
Ischemic stroke is one of the most common causes of death and disability worldwide. Neuroinflammation is a major pathological event involved in the process of ischemic injury and repair. In particular, microglia play a dual role in neuroinflammation. During the acute phase of stroke onset, M2 microglia are the dominant phenotype and exert protective effects on neuronal cells, whereas permanent M1 microglia contribute to prolonged inflammation and are detrimental to brain tissue. Emerging evidence indicates that microRNAs (miRNAs) may have regulatory effects on microglia-associated inflammation. Thus, we briefly reviewed the dynamic response of microglia after a stroke and assessed how specific miRNAs affect the behavior of reactive microglia. We concluded that miRNAs may be useful novel therapeutic targets to improve stroke outcomes and modulate neuroinflammation.
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Affiliation(s)
- Lu Lian
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China.,Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yunsha Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lu Liu
- Binhai New Area Hospital of TCM. Tian Jin, Fourth Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Liji Yang
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China.,Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yichen Cai
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China.,Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Junping Zhang
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
| | - Shixin Xu
- Medical Experiment Center, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin, China
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Zhu L, Zhou X, Li S, Liu J, Yang J, Fan X, Zhou S. miR‑183‑5p attenuates cerebral ischemia injury by negatively regulating PTEN. Mol Med Rep 2020; 22:3944-3954. [PMID: 32901892 PMCID: PMC7533437 DOI: 10.3892/mmr.2020.11493] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 07/28/2020] [Indexed: 02/06/2023] Open
Abstract
Cerebral ischemia is a common cerebrovascular disease caused by the occlusion of a cerebral blood vessel. MicroRNAs (miRNAs/miRs) are emerging regulators of various human diseases, including cerebral ischemia. Upregulation of miR‑183‑5p has been reported to alleviate liver injury induced by ischemia‑reperfusion (I/R). However, the effect of miR‑183‑5p on cerebral ischemia injury remains unknown. The present study evaluated the effects of miR‑183‑5p on ischemia injury using ischemic models of mouse brains exposed to transient middle cerebral artery occlusion and Neuro‑2A (N2A) neuroblastoma cells exposed to oxygen‑glucose‑deprivation (OGD) and subsequently reoxygenated. Ischemia was evaluated in mice using neurological function scores, cerebral edema, 2,3,5‑triphenyltetrazoliumchloride, Nissl and Fluoro‑Jade B staining assays. In addition, miR‑183‑5p expression, N2A cell viability and the expression levels of apoptosis‑associated proteins were detected by quantitative PCR, Cell Counting Kit‑8 assay, flow cytometry and western blotting. The association between miR‑183‑5p and phosphatase and tensin homolog (PTEN) was also confirmed by a luciferase reporter assay. The results revealed that miR‑183‑5p expression was decreased and brain damage was increased in ischemic mice compared with the sham group. Additionally, miR‑183‑5p levels were reduced, and apoptosis was increased in N2A cells exposed to ischemia compared with the control group. Following transfection with agomiR‑183‑5p, cerebral ischemic injury and apoptosis levels were reduced in the in vivo I/R stroke model and OGD‑induced N2A cells. In addition, PTEN was determined to be a target of miR‑183‑5p following elucidation of a direct binding site. Overexpression of PTEN reversed the miR‑183‑5p‑induced N2A cell apoptosis inhibition and survival after OGD. The results of the present study suggested that miR‑183‑5p reduced ischemic injury by negatively regulating PTEN, which may aid the development of a novel therapeutic strategy for cerebral ischemia.
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Affiliation(s)
- Li Zhu
- Department of Neurology, Qilu Hospital of Shandong University and Brain Science Research Institute, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Xueying Zhou
- Department of Rehabilitation, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Shanshan Li
- Department of Neurology, Binzhou People's Hospital, Binzhou, Shandong 256610, P.R. China
| | - Jianmeng Liu
- Department of Gynaecology and Obstetrics, Binzhou People's Hospital, Binzhou, Shandong 256610, P.R. China
| | - Jingyan Yang
- Department of Pathology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Xiangyun Fan
- Department of General Medicine, Binzhou People's Hospital, Binzhou, Shandong 256610, P.R. China
| | - Shengnian Zhou
- Department of Neurology, Qilu Hospital of Shandong University and Brain Science Research Institute, Shandong University, Jinan, Shandong 250012, P.R. China
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10
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Rzemieniec J, Bratek E, Wnuk A, Przepiórska K, Salińska E, Kajta M. Neuroprotective effect of 3,3'-Diindolylmethane against perinatal asphyxia involves inhibition of the AhR and NMDA signaling and hypermethylation of specific genes. Apoptosis 2020; 25:747-762. [PMID: 32816128 PMCID: PMC7527327 DOI: 10.1007/s10495-020-01631-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2020] [Indexed: 12/15/2022]
Abstract
Each year, 1 million children die due to perinatal asphyxia; however, there are no effective drugs to protect the neonatal brain against hypoxic/ischemic damage. In this study, we demonstrated for the first time the neuroprotective capacity of 3,3’-diindolylmethane (DIM) in an in vivo model of rat perinatal asphyxia, which has translational value and corresponds to hypoxic/ischemic episodes in human newborns. Posttreatment with DIM restored the weight of the ipsilateral hemisphere and normalized cell number in the brain structures of rats exposed to perinatal asphyxia. DIM also downregulated the mRNA expression of HIF1A-regulated Bnip3 and Hif1a which is a hypoxic marker, and the expression of miR-181b which is an indicator of perinatal asphyxia. In addition, DIM inhibited apoptosis and oxidative stress accompanying perinatal asphyxia through: downregulation of FAS, CASP-3, CAPN1, GPx3 and SOD-1, attenuation of caspase-9 activity, and upregulation of anti-apoptotic Bcl2 mRNA. The protective effects of DIM were accompanied by the inhibition of the AhR and NMDA signaling pathways, as indicated by the reduced expression levels of AhR, ARNT, CYP1A1, GluN1 and GluN2B, which was correlated with enhanced global DNA methylation and the methylation of the Ahr and Grin2b genes. Because our study provided evidence that in rat brain undergoing perinatal asphyxia, DIM predominantly targets AhR and NMDA, we postulate that compounds that possess the ability to inhibit their signaling are promising therapeutic tools to prevent stroke.
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Affiliation(s)
- J Rzemieniec
- Laboratory of Molecular Neuroendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna Street, 31-343, Krakow, Poland
| | - E Bratek
- Department of Neurochemistry, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawinskiego Street, 02-106, Warsaw, Poland
| | - A Wnuk
- Laboratory of Molecular Neuroendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna Street, 31-343, Krakow, Poland
| | - K Przepiórska
- Laboratory of Molecular Neuroendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna Street, 31-343, Krakow, Poland
| | - E Salińska
- Department of Neurochemistry, Mossakowski Medical Research Centre, Polish Academy of Sciences, 5 Pawinskiego Street, 02-106, Warsaw, Poland
| | - M Kajta
- Laboratory of Molecular Neuroendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna Street, 31-343, Krakow, Poland.
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11
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Mao L, Zuo ML, Wang AP, Tian Y, Dong LC, Li TM, Kuang DB, Song GL, Yang ZB. Low expression of miR‑532‑3p contributes to cerebral ischemia/reperfusion oxidative stress injury by directly targeting NOX2. Mol Med Rep 2020; 22:2415-2423. [PMID: 32705253 PMCID: PMC7411405 DOI: 10.3892/mmr.2020.11325] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 05/21/2020] [Indexed: 12/16/2022] Open
Abstract
NADPH oxidase 2 (NOX2) is a major subtype of NOX and is responsible for the generation of reactive oxygen species (ROS) in brain tissues. MicroRNAs (miRNAs/miRs) are important epigenetic regulators of NOX2. The present study aimed to identify the role of NOX2 miRNA-targets in ischemic stroke (IS). A rat cerebral ischemia/reperfusion (CI/R) injury model and a SH-SY5Y cell hypoxia/reoxygenation (H/R) model were used to simulate IS. Gene expression levels, ROS production and apoptosis in tissue or cells were determined, and bioinformatic analysis was conducted for target prediction of miRNA. In vitro experiments, including function-gain and luciferase activity assays, were also performed to assess the roles of miRNAs. The results indicated that NOX2 was significantly increased in brain tissues subjected to I/R and in SH-SY5Y cells subjected to H/R, while the expression of miR-532-3p (putative target of NOX2) was significantly decreased in brain tissues and plasma. Overexpression of miR-532-3p significantly suppressed NOX2 expression and ROS generation in SH-SY5Y cells subjected to H/R, as well as reduced the relative luciferase activity of cells transfected with a reporter gene plasmid. Collectively, these data indicated that miR-532-3p may be a target of NOX2 and a biomarker for CI/R injury. Thus, the present study may provide a novel target for drug development and IS therapy.
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Affiliation(s)
- Li Mao
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan, Normal University, Changsha, Hunan 410006, P.R. China
| | - Mei-Ling Zuo
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan, Normal University, Changsha, Hunan 410006, P.R. China
| | - Ai-Ping Wang
- Institute of Clinical Research, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Ying Tian
- Institute of Clinical Research, Affiliated Nanhua Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Li-Chen Dong
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan, Normal University, Changsha, Hunan 410006, P.R. China
| | - Tao-Ming Li
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan, Normal University, Changsha, Hunan 410006, P.R. China
| | - Da-Bin Kuang
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan, Normal University, Changsha, Hunan 410006, P.R. China
| | - Gui-Lin Song
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan, Normal University, Changsha, Hunan 410006, P.R. China
| | - Zhong-Bao Yang
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan, Normal University, Changsha, Hunan 410006, P.R. China
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12
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Ravnik-Glavač M, Glavač D. Circulating RNAs as Potential Biomarkers in Amyotrophic Lateral Sclerosis. Int J Mol Sci 2020; 21:ijms21051714. [PMID: 32138249 PMCID: PMC7084402 DOI: 10.3390/ijms21051714] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/27/2020] [Accepted: 02/29/2020] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a complex multi-system neurodegenerative disorder with currently limited diagnostic and no therapeutic options. Despite the intense efforts no clinically applicable biomarkers for ALS are yet established. Most current research is thus focused, in particular, in identifying potential non-invasive circulating biomarkers for more rapid and accurate diagnosis and monitoring of the disease. In this review, we have focused on messenger RNA (mRNA), non-coding RNAs (lncRNAs), micro RNAs (miRNAs) and circular RNA (circRNAs) as potential biomarkers for ALS in peripheral blood serum, plasma and cells. The most promising miRNAs include miR-206, miR-133b, miR-27a, mi-338-3p, miR-183, miR-451, let-7 and miR-125b. To test clinical potential of this miRNA panel, a useful approach may be to perform such analysis on larger multi-center scale using similar experimental design. However, other types of RNAs (lncRNAs, circRNAs and mRNAs) that, together with miRNAs, represent RNA networks, have not been yet extensively studied in blood samples of patients with ALS. Additional research has to be done in order to find robust circulating biomarkers and therapeutic targets that will distinguish key RNA interactions in specific ALS-types to facilitate diagnosis, predict progression and design therapy.
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Affiliation(s)
- Metka Ravnik-Glavač
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
- Correspondence: (M.R.-G.); (D.G.)
| | - Damjan Glavač
- Department of Molecular Genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia
- Correspondence: (M.R.-G.); (D.G.)
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Hou K, Li G, Zhao J, Xu B, Zhang Y, Yu J, Xu K. Bone mesenchymal stem cell-derived exosomal microRNA-29b-3p prevents hypoxic-ischemic injury in rat brain by activating the PTEN-mediated Akt signaling pathway. J Neuroinflammation 2020; 17:46. [PMID: 32014002 PMCID: PMC6998092 DOI: 10.1186/s12974-020-1725-8] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 01/24/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) are suspected to exert neuroprotective effects in brain injury, in part through the secretion of extracellular vesicles like exosomes containing bioactive compounds. We now investigate the mechanism by which bone marrow MSCs (BMSCs)-derived exosomes harboring the small non-coding RNA miR-29b-3p protect against hypoxic-ischemic brain injury in rats. METHODS We established a rat model of middle cerebral artery occlusion (MCAO) and primary cortical neuron or brain microvascular endothelial cell (BMEC) models of oxygen and glucose deprivation (OGD). Exosomes were isolated from the culture medium of BMSCs. We treated the MCAO rats with BMSC-derived exosomes in vivo, and likewise the OGD-treated neurons and BMECs in vitro. We then measured apoptosis- and angiogenesis-related features using TUNEL and CD31 immunohistochemical staining and in vitro Matrigel angiogenesis assays. RESULTS The dual luciferase reporter gene assay showed that miR-29b-3p targeted the protein phosphatase and tensin homolog (PTEN). miR-29b-3p was downregulated and PTEN was upregulated in the brain of MCAO rats and in OGD-treated cultured neurons. MCAO rats and OGD-treated neurons showed promoted apoptosis and decreased angiogenesis, but overexpression of miR-29b-3p or silencing of PTEN could reverse these alterations. Furthermore, miR-29b-3p could negatively regulate PTEN and activate the Akt signaling pathway. BMSCs-derived exosomes also exerted protective effects against apoptosis of OGD neurons and cell apoptosis in the brain samples from MCAO rats, where we also observed promotion of angiogenesis. CONCLUSION BMSC-derived exosomal miR-29b-3p ameliorates ischemic brain injury by promoting angiogenesis and suppressing neuronal apoptosis, a finding which may be of great significance in the treatment of hypoxic-ischemic brain injury.
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Affiliation(s)
- Kun Hou
- Department of Neurosurgery, The First Hospital of Jilin University, No. 1 Xinmin Avenue, Changchun, 130021, Jilin, People's Republic of China
| | - Guichen Li
- Department of Neurology, The First Hospital of Jilin University, Changchun, 130021, People's Republic of China
| | - Jinchuan Zhao
- Department of Neurosurgery, The First Hospital of Jilin University, No. 1 Xinmin Avenue, Changchun, 130021, Jilin, People's Republic of China
| | - Baofeng Xu
- Department of Neurosurgery, The First Hospital of Jilin University, No. 1 Xinmin Avenue, Changchun, 130021, Jilin, People's Republic of China
| | - Yang Zhang
- Department of Neurosurgery, The First Hospital of Jilin University, No. 1 Xinmin Avenue, Changchun, 130021, Jilin, People's Republic of China
| | - Jinlu Yu
- Department of Neurosurgery, The First Hospital of Jilin University, No. 1 Xinmin Avenue, Changchun, 130021, Jilin, People's Republic of China.
| | - Kan Xu
- Department of Neurosurgery, The First Hospital of Jilin University, No. 1 Xinmin Avenue, Changchun, 130021, Jilin, People's Republic of China.
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Zuo ML, Wang AP, Song GL, Yang ZB. miR-652 protects rats from cerebral ischemia/reperfusion oxidative stress injury by directly targeting NOX2. Biomed Pharmacother 2020; 124:109860. [PMID: 32000043 DOI: 10.1016/j.biopha.2020.109860] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/30/2019] [Accepted: 01/06/2020] [Indexed: 10/25/2022] Open
Abstract
Ischemic stroke is a devastating central nervous disease associated with oxidative stress and NOX2 is the main source of ROS responsible for brain tissue. miRNAs are a class of negative regulator of genes in mammals and involves the pathogenesis of ischemic stroke. This study aims to observe the role of target miRNA(miR-652) of NOX2 in ischemic stroke. A rat cerebral ischemia/reperfusion (CI/R) injury model and an SH-SY5Y cell hypoxia/reoxygenation(H/R) model were used to simulate ischemic stroke, and corresponding gene expression, biochemical indicators and pathophysiological indicators were measured to observe the role of miR-652. NOX2 significantly increased in brain tissues subjected to I/R or in SH-SY5Y cells subjected to H/R, while the expression level of miR-652(potential target of NOX2) significantly decreased in both brain tissues and plasma. Overexpression of miR-652 significantly suppressed NOX2 expression and ROS generation in H/R treated SH-SY5Y cells and reduced the relative luciferase activity of cells transfected with plasmid NOX2-WT (reporter gene plasmid). MiR-652 agomir significantly decreased the expression of NOX2 and ROS generation in brain tissues of CIR rats, as well as tissue injury. These data indicated that miR-652 protected rats from cerebral ischemia reperfusion injury by directly targeting NOX2, is a novel target for ischemic stroke therapy.
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Affiliation(s)
- Mei-Ling Zuo
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan Normal University, Changsha, 410006, Hunan, China
| | - Ai-Ping Wang
- Institute of Clinical Research, Affiliated Nanhua Hospital, University of South China, Hengyang, 421001, Hunan, China
| | - Gui-Lin Song
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan Normal University, Changsha, 410006, Hunan, China; Institute of Emergency and Critical Care Medicine of Changsha, Changsha, China
| | - Zhong-Bao Yang
- Office of Good Clinical Practice, The Affiliated Changsha Hospital of Hunan Normal University, Changsha, 410006, Hunan, China; Institute of Emergency and Critical Care Medicine of Changsha, Changsha, China.
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Hashemilar M, Khalili M, Rezaeimanesh N, Sadeghi Hokmabadi E, Rasulzade S, Shamshirgaran SM, Taheraghdam A, Farhoudi M, Shaafi S, Shakouri SK, Savadi Osgouei D. Effect of Whey Protein Supplementation on Inflammatory and Antioxidant Markers, and Clinical Prognosis in Acute Ischemic Stroke (TNS Trial): A Randomized, Double Blind, Controlled, Clinical Trial. Adv Pharm Bull 2019; 10:135-140. [PMID: 32002373 PMCID: PMC6983999 DOI: 10.15171/apb.2020.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 08/31/2019] [Accepted: 09/30/2019] [Indexed: 01/02/2023] Open
Abstract
Purpose: Malnutrition is extensively prevalent amongst critically ill patients afflicted by ischemic stroke (IS). This study purpose was to evaluate the protein whey effect on inflammatory and antioxidant markers and functional prognosis in acute IS patients.
Methods: out of 42 patients with acute IS who were referred to Imam Reza Educational Hospital, Tabriz, Iran, 40 patients participated in the study. Twenty-one patients as control group received the hospital routine formula, and 19 patients as intervention group received 20 g/daily of whey protein through oral gavage. Inflammation and oxidative stress indicators (e.g., albumin, malondialdehyde (MDA), total antioxidant capacity (TAC), interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), and high sensitivity C reactive protein (hs-CRP)and clinical variables included in were evaluated using National Institutes of Health Stroke Scale (NIHSS) and modified Rankin Scale (mRS) during admission and also 3 weeks after intervention.
Results: Whey protein supplementation significantly decreased the NIHSS and mRS scores, TNF-α, IL-6, and hs-CRP by passing 3 weeks from intervention (P<0.05). However, whey formula had no significant effect on other markers including albumin, and MDA. The hs-CRP (P = 0.02) reduction was significantly higher in whey protein group in comparison with control group.
Conclusion: Whey protein supplementation reduced inflammation markers in those patients with IS. However, these changes should be studied in larger-scale trials.
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Affiliation(s)
- Mazyar Hashemilar
- Department of Neurology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Khalili
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nasim Rezaeimanesh
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Elyar Sadeghi Hokmabadi
- Department of Neurology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sevin Rasulzade
- Department of Neurology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Aliakbar Taheraghdam
- Department of Neurology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Farhoudi
- Department of Neurology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sheyda Shaafi
- Department of Neurology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Kazem Shakouri
- Physical Medicine and Rehabilitation Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Daryoush Savadi Osgouei
- Department of Neurology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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16
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Su ZJ, Wang XY, Zhou C, Chai Z. Down-regulation of miR-3068-3p enhances kcnip4-regulated A-type potassium current to protect against glutamate-induced excitotoxicity. J Neurochem 2019; 153:617-630. [PMID: 31792968 DOI: 10.1111/jnc.14932] [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: 10/12/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 11/30/2022]
Abstract
The main cause of excitotoxic neuronal death in ischemic stroke is the massive release of glutamate. Recently, microRNAs (miRNAs) have been found to play an essential role in stroke pathology, although the molecular mechanisms remain to be investigated. Here, to identify potential candidate miRNAs involved in excitotoxicity, we treated rat primary cortical neurons with glutamate and found that miR-3068-3p, a novel miRNA, was up-regulated. We hypothesized that restoring miR-3068-3p expression might influence the neuronal injury outcomes. The inhibition of miR-3068-3p, using tough decoy lentiviruses, significantly attenuated the effects of glutamate on neuronal viability and intracellular calcium overload. To unravel the mechanisms, we employed bioinformatics analysis and RNA sequencing to identify downstream target genes. Additional luciferase assays and western blots validated kcnip4, a Kv4-mediated A-type potassium current (IA ) regulator, as a direct target of miR-3068-3p. The inhibition of miR-3068-3p increased kcnip4 expression and vice versa. In addition, the knockdown of kcnip4 by shRNA abolished the protective effect of miR-3068-3p, and over-expressing kcnip4 alone was sufficient to play a neuroprotective role in excitotoxicity. Moreover the inhibition of miR-3068-3p enhanced the IA density, and the pharmacological inhibition of IA abrogated the protective role of miR-3068-3p inhibition and kcnip4 over-expression. Therefore, we conclude that inhibition of miR-3068-3p protects against excitotoxicity via its target gene, kcnip4, and kcnip4-regulated IA . Our data suggest that the miR-3068-3p/kcnip4 axis may serve as a novel target for the treatment of ischemic stroke.
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Affiliation(s)
- Zi-Jun Su
- State Key Laboratory of Membrane Biology, School of Life Sciences, Peking University, Beijing, China
| | - Xu-Yi Wang
- State Key Laboratory of Membrane Biology, School of Life Sciences, Peking University, Beijing, China
| | - Chen Zhou
- State Key Laboratory of Membrane Biology, School of Life Sciences, Peking University, Beijing, China
| | - Zhen Chai
- State Key Laboratory of Membrane Biology, School of Life Sciences, Peking University, Beijing, China
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17
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Bruch GE, Fernandes LF, Bassi BL, Alves MTR, Pereira IO, Frézard F, Massensini AR. Liposomes for drug delivery in stroke. Brain Res Bull 2019; 152:246-256. [DOI: 10.1016/j.brainresbull.2019.07.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 06/26/2019] [Accepted: 07/12/2019] [Indexed: 12/26/2022]
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18
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MicroRNA in Brain pathology: Neurodegeneration the Other Side of the Brain Cancer. Noncoding RNA 2019; 5:ncrna5010020. [PMID: 30813461 PMCID: PMC6468660 DOI: 10.3390/ncrna5010020] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/06/2019] [Accepted: 02/15/2019] [Indexed: 12/20/2022] Open
Abstract
The mammalian brain is made up of billions of neurons and supporting cells (glial cells), intricately connected. Molecular perturbations often lead to neurodegeneration by progressive loss of structure and malfunction of neurons, including their death. On the other side, a combination of genetic and cellular factors in glial cells, and less frequently in neurons, drive oncogenic transformation. In both situations, microenvironmental niches influence the progression of diseases and therapeutic responses. Dynamic changes that occur in cellular transcriptomes during the progression of developmental lineages and pathogenesis are controlled through a variety of regulatory networks. These include epigenetic modifications, signaling pathways, and transcriptional and post-transcriptional mechanisms. One prominent component of the latter is small non-coding RNAs, including microRNAs, that control the vast majority of these networks including genes regulating neural stemness, differentiation, apoptosis, projection fates, migration and many others. These cellular processes are also profoundly dependent on the microenvironment, stemness niche, hypoxic microenvironment, and interactions with associated cells including endothelial and immune cells. Significantly, the brain of all other mammalian organs expresses the highest number of microRNAs, with an additional gain in expression in the early stage of neurodegeneration and loss in expression in oncogenesis. However, a mechanistic explanation of the concept of an apparent inverse correlation between the odds of cancer and neurodegenerative diseases is only weakly developed. In this review, we thus will discuss widespread de-regulation of microRNAome observed in these two major groups of brain pathologies. The deciphering of these intricacies is of importance, as therapeutic restoration of pre-pathological microRNA landscape in neurodegeneration must not lead to oncogenesis and vice versa. We thus focus on microRNAs engaged in cellular processes that are inversely regulated in these diseases. We also aim to define the difference in microRNA networks between pro-survival and pro-apoptotic signaling in the brain.
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19
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Chen W, Sinha B, Li Y, Benowitz L, Chen Q, Zhang Z, Patel NJ, Aziz-Sultan AM, Chiocca AE, Wang X. Monogenic, Polygenic, and MicroRNA Markers for Ischemic Stroke. Mol Neurobiol 2019; 56:1330-1343. [PMID: 29948938 PMCID: PMC7358039 DOI: 10.1007/s12035-018-1055-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 03/29/2018] [Indexed: 02/08/2023]
Abstract
Ischemic stroke (IS) is a leading disease with high mortality and disability, as well as with limited therapeutic window. Biomarkers for earlier diagnosis of IS have long been pursued. Family and twin studies confirm that genetic variations play an important role in IS pathogenesis. Besides DNA mutations found previously by genetic linkage analysis for monogenic IS (Mendelian inheritance), recent studies using genome-wide associated study (GWAS) and microRNA expression profiling have resulted in a large number of DNA and microRNA biomarkers in polygenic IS (sporadic IS), especially in different IS subtypes and imaging phenotypes. The present review summarizes genetic markers discovered by clinical studies and discusses their pathogenic molecular mechanisms involved in developmental or regenerative anomalies of blood vessel walls, neuronal apoptosis, excitotoxic death, inflammation, neurogenesis, and angiogenesis. The possible impact of environment on genetics is addressed as well. We also include a perspective on further studies and clinical application of these IS biomarkers.
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Affiliation(s)
- Wu Chen
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
- Department of Clinical Laboratory, Dongfeng Hospital, Hubei University of Medicine, Shiyan, 442008, Hubei, China.
| | - Bharati Sinha
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Department of Newborn Medicine, Brigham and Women's Hospital, Boston, MA, 02115, USA
| | - Yi Li
- Department of Clinical Laboratory, Dongfeng Hospital, Hubei University of Medicine, Shiyan, 442008, Hubei, China
| | - Larry Benowitz
- Department of Neurosurgery, Boston Children's Hospital, F.M. Kirby Neurobiology Center for Life Science, Harvard Medical School, Boston, MA, 02115, USA
| | - Qinhua Chen
- Experimental Center, Dongfeng Hospital, Hubei University of Medicine, Shiyan, 442008, Hubei, China
| | - Zhenghong Zhang
- Department of Neurology, Dongfeng Hospital, Hubei University of Medicine, Shiyan, 442008, Hubei, China
| | - Nirav J Patel
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Ali M Aziz-Sultan
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Antonio E Chiocca
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Xin Wang
- Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
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Jin F, Xing J. Circulating miR-126 and miR-130a levels correlate with lower disease risk, disease severity, and reduced inflammatory cytokine levels in acute ischemic stroke patients. Neurol Sci 2018; 39:1757-1765. [PMID: 30030634 DOI: 10.1007/s10072-018-3499-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 07/11/2018] [Indexed: 12/24/2022]
Abstract
To investigate the correlations of five angiogenesis-related miRNA (miR-126, miR-130a, miR-222, miR-218, and miR-185) expression levels with risk, severity, and inflammatory cytokines levels in acute ischemic stroke (AIS) patients. A total of 148 AIS patients and 148 age- and gender-matched controls were consecutively enrolled. Blood samples were collected from AIS patients and controls, and plasma was separated for miRNAs and cytokine level detection. Plasma levels of miRNAs were evaluated by real-time qPCR method, and inflammatory cytokine levels were detected using an enzyme-linked immunosorbent assay (ELISA). Plasma miR-126 and miR-130a expression levels in AIS patients were lower than those of controls, while the levels of miR-222, miR-218, and miR-185 were elevated in AIS patients compared with controls. After pooling the five miRNA expression levels together, the area under the curve (AUC) for predicting AIS risk was 0.840 (95% CI 0.795-0.885) with a sensitivity of 83.8% and a specificity of 69.6% at the best cut-off point. Plasma miR-126 (r = - 0.402, P < 0.001) and miR-130a (r = - 0.161, P = 0.050) levels were negatively correlated with NIHSS scores, while plasma miR-218 level was positively correlated with NIHSS scores (r = 0.471, P < 0.001). Most importantly, plasma miR-126 expression was negatively correlated with TNF-α (r = - 0.168, P = 0.041), IL-1β (r = - 0.246, P = 0.003), and IL-6 (r = - 0.147, P = 0.035) levels, while miR-130a expression was negatively correlated with TNF-α (r = - 0.287, P < 0.001), IL-1β (r = - 0.168, P = 0.041), and IL-6 (r = - 0.239, P = 0.003) expression levels and positively associated with IL-10 level (r = 0.261, P = 0.001). Circulating miR-126 and miR-130a levels correlate with lower disease risk, decreased disease severity, and reduced inflammatory cytokine levels in AIS patients.
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Affiliation(s)
- Fuqiang Jin
- Department of Emergency, Cangzhou Central Hospital, 16 Xinhua West Road, Cangzhou, 061018, China.
| | - Jie Xing
- Cangzhou Medical College, Cangzhou, China
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Dolati S, Ahmadi M, Khalili M, Taheraghdam AA, Siahmansouri H, Babaloo Z, Aghebati-Maleki L, Jadidi-Niaragh F, Younesi V, Yousefi M. Peripheral Th17/Treg imbalance in elderly patients with ischemic stroke. Neurol Sci 2018; 39:647-654. [DOI: 10.1007/s10072-018-3250-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 01/10/2018] [Indexed: 12/31/2022]
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22
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Revisiting nicotine’s role in the ageing brain and cognitive impairment. Rev Neurosci 2017; 28:767-781. [DOI: 10.1515/revneuro-2017-0008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 04/12/2017] [Indexed: 12/14/2022]
Abstract
AbstractBrain ageing is a complex process which in its pathologic form is associated with learning and memory dysfunction or cognitive impairment. During ageing, changes in cholinergic innervations and reduced acetylcholinergic tonus may trigger a series of molecular pathways participating in oxidative stress, excitotoxicity, amyloid-β toxicity, apoptosis, neuroinflammation, and perturb neurotrophic factors in the brain. Nicotine is an exogenous agonist of nicotinic acetylcholine receptors (nAChRs) and acts as a pharmacological chaperone in the regulation of nAChR expression, potentially intervening in age-related changes in diverse molecular pathways leading to pathology. Although nicotine has therapeutic potential, paradoxical effects have been reported, possibly due to its inverted U-shape dose-response effects or pharmacokinetic factors. Additionally, nicotine administration should result in optimum therapeutic effects without imparting abuse potential or toxicity. Overall, this review aims to compile the previous and most recent data on nicotine and its effects on cognition-related mechanisms and age-related cognitive impairment.
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MicroRNA in glutamate receptor-dependent neurological diseases. Clin Sci (Lond) 2017; 131:1591-1604. [PMID: 28667061 DOI: 10.1042/cs20170964] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/05/2017] [Accepted: 05/15/2017] [Indexed: 02/01/2023]
Abstract
Glutamate-mediated excitotoxicity is the major neuropathological process contributing to numerous neurological diseases. Recently, emerging evidence indicates that microRNAs (miRNAs) play essential roles in the pathophysiology of a wide range of neurological diseases. Notably, there have been significant developments in understanding the biogenesis of miRNAs, their regulatory mechanisms, and their potential as effective biomarkers and therapies. In the present review, we summarize the recent literature that highlights the versatile roles played by miRNAs in glutamate receptor (GluR)-dependent neurological diseases. Based on the reported studies to date, modulation of miRNAs could emerge as a promising therapeutic target for a variety of neurological diseases that were discussed in this review.
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