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Shi Z, Sun H, Tian X, Song X, Fan J, Sun S, Wang J, Zhang J, Wang J. Extracellular vesicles containing miR-181a-5p as a novel therapy for experimental autoimmune encephalomyelitis-induced demyelination. Int Immunopharmacol 2024; 135:112326. [PMID: 38796967 DOI: 10.1016/j.intimp.2024.112326] [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: 08/28/2023] [Revised: 05/06/2024] [Accepted: 05/19/2024] [Indexed: 05/29/2024]
Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating disorder of the central nervous system. Recent research has revealed that mesenchymal stem cell-derived extracellular vesicles (MSC-EVs), containing specific miRNAs, possess immunomodulatory properties and have demonstrated therapeutic potential in the treatment of MS. This study aimed to investigate the role MSC-EVs, containing microRNA-181a-5p (miR-181a-5p) in both experimental autoimmune encephalomyelitis (EAE), an established animal model of MS, and lipopolysaccharide-stimulated BV2 microglia. We evaluated clinical symptoms and inflammatory responses in EAE mice following intrathecal injections of MSC-EVs. MSC-EVs containing miR-181a-5p were co-cultured with microglia to explore their impact on inflammation and cell pyroptosis. We validated the interaction between miR-181a-5p and its downstream regulators and conducted in vivo verification by injecting manipulated EVs containing miR-181a-5p into EAE mice. Our results demonstrated that MSC-EVs, containing miR-181a-5p reduced the clinical symptoms of EAE mice. Furthermore, we observed downregulation of miR-181a-5p in EAE model mice, and its expression was restored after treatment with MSC-EVs, which corresponded to suppressed microglial inflammation and pyroptosis. Additionally, EVs containing miR-181a-5p mitigated spinal cord injury and demyelination in EAE mice. Mechanistically, ubiquitin-specific protease 15 (USP15) exhibited high expression in EAE mice, and miR-181a-5p was specifically targeted and bound to USP15, thereby regulating the RelA/NEK7 axis. In conclusion, MSC-EVs containing miR-181a-5p inhibit microglial inflammation and pyroptosis through the USP15-mediated RelA/NEK7 axis, thus alleviating the clinical symptoms of EAE. These findings present a potential therapeutic approach for the treatment of MS.
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Affiliation(s)
- Zhong Shi
- Ophthalmology Department, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China
| | - Huanhuan Sun
- Department of Vascular Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China
| | - Xinyi Tian
- Department of Rheumatology and Clinical Immunology, The Affiliated Hospital of Qingdao University, Qingdao 266002, Shandong, China
| | - Xiujuan Song
- Department of Neurology, Neurological Laboratory of Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China
| | - Jingyi Fan
- Department of Neurology, Neurological Laboratory of Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China
| | - Shichao Sun
- Department of Neurology, Neurological Laboratory of Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China
| | - Jinli Wang
- Department of Neurology, Neurological Laboratory of Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China
| | - Jing Zhang
- Department of Neurology, Neurological Laboratory of Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China
| | - Jueqiong Wang
- Department of Neurology, Neurological Laboratory of Hebei Province, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei, China.
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2
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Yang C, Li F, Mo L, Lin W. Self-assembly of molecular beacons through metal ion coordination for fluorescence imaging of miRNA in living cells. LUMINESCENCE 2023; 38:1977-1983. [PMID: 37555579 DOI: 10.1002/bio.4573] [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: 12/10/2022] [Revised: 03/13/2023] [Accepted: 03/19/2023] [Indexed: 08/10/2023]
Abstract
Fluorescence nanosensors based on functional nucleic acids have been explored as a powerful sensing platform for disease-relevant miRNAs. This work developed a new hybrid nanosensor (Zr-B) through coordination-driven self-assembly of Zr ions and beacons. The prepared nanosensor exhibited high loading efficiency of beacons and could achieve sensitive and specific detection for miRNAs. The hybrid nanosensor could transfer beacons into living cells efficiently and maintain high stability and biocompatibility in the biological environment, achieving effective miRNA fluorescence imaging in living cells. Therefore, the resultant nanosensor holds potential for applications in disease diagnostics.
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Affiliation(s)
- Chan Yang
- Institute of Optical Materials and Chemical Biology, Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, China
| | - Fenfen Li
- Institute of Optical Materials and Chemical Biology, Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, China
| | - Liuting Mo
- Institute of Optical Materials and Chemical Biology, Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, China
| | - Weiying Lin
- Institute of Optical Materials and Chemical Biology, Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, China
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3
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Alshahrani SH, Alameri AA, Kahar F, Alexis Ramírez-Coronel A, Fadhel Obaid R, Alsaikhan F, Zabibah RS, Qasim QA, Altalbawy FMA, Fakri Mustafa Y, Mirzaei R, Karampoor S. Overview of the role and action mechanism of microRNA-128 in viral infections. Microb Pathog 2023; 176:106020. [PMID: 36746316 DOI: 10.1016/j.micpath.2023.106020] [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: 10/14/2022] [Revised: 01/21/2023] [Accepted: 01/31/2023] [Indexed: 02/07/2023]
Abstract
Recently in vivo and in vitro studies have provided evidence establishing the significance of microRNAs (miRNAs) in both physiological and pathological conditions. In this regard, the role of miRNA-128 (miR-128) in health and diseases has been found, and its critical regulatory role in the context of some viral diseases has been recently identified. For instance, it has been found that miR-128 can serve as an antiviral mediator and significantly limit the replication and dissemination of human immunodeficiency virus type 1 (HIV-1). Besides, it has been noted that poliovirus receptor-related 4 (PVRL4) is post-transcriptionally regulated by miR-128, representing possible miRNA targets that can modulate measles virus infection. Of note, the downregulation of seminal exosomes eca-miR-128 is associated with the long-term persistence of Equine arteritis virus (EAV) in the reproductive tract, and this particular miRNA is a putative regulator of chemokine ligand 16 (C-X-C motif) as determined by target prediction analysis. In this review, the latest information on the role and action mechanism of miR-128 in viral infections will be summarized and discussed in detail.
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Affiliation(s)
- Shadia Hamoud Alshahrani
- Medical Surgical Nursing Department, King Khalid University, Almahala, Khamis Mushate, Saudi Arabia
| | - Ameer A Alameri
- Department of Chemistry, University of Babylon, Babylon, Iraq
| | - Fitriani Kahar
- Medic Technology Laboratory, Poltekkes Kemenkes Semarang, Indonesia
| | - Andrés Alexis Ramírez-Coronel
- National University of Education, Azogues, Ecuador; Catholic University of Cuenca, Azogues Campus, Ecuador; University of Palermo, Buenos Aires, Argentina; CES University, Colombia, Azogues, Ecuador
| | - Rasha Fadhel Obaid
- Department of Biomedical Engineering, Al-Mustaqbal University College, Babylon, Iraq
| | - Fahad Alsaikhan
- College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj, Kingdom of Saudi Arabia
| | - Rahman S Zabibah
- Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq
| | | | - Farag M A Altalbawy
- National Institute of Laser Enhanced Sciences (NILES), Cairo University, Giza 12613, Egypt; Department of Chemistry, University College of Duba, Tabuk University, Duba 71911, Saudi Arabia
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul 41001, Iraq
| | - Rasoul Mirzaei
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran.
| | - Sajad Karampoor
- Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran.
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4
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Barateiro A, Barros C, Pinto MV, Ribeiro AR, Alberro A, Fernandes A. Women in the field of multiple sclerosis: How they contributed to paradigm shifts. Front Mol Neurosci 2023; 16:1087745. [PMID: 36818652 PMCID: PMC9937661 DOI: 10.3389/fnmol.2023.1087745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/13/2023] [Indexed: 02/05/2023] Open
Abstract
History is full of women who made enormous contributions to science. While there is little to no imbalance at the early career stage, a decreasing proportion of women is found as seniority increases. In the multiple sclerosis (MS) field, 44% of first authors and only 35% of senior authors were female. So, in this review, we highlight ground-breaking research done by women in the field of MS, focusing mostly on their work as principal investigators. MS is an autoimmune disorder of the central nervous system (CNS), with evident paradigm shifts in the understating of its pathophysiology. It is known that the immune system becomes overactivated and attacks myelin sheath surrounding axons. The resulting demyelination disrupts the communication signals to and from the CNS, which causes unpredictable symptoms, depending on the neurons that are affected. Classically, MS was reported to cause mostly physical and motor disabilities. However, it is now recognized that cognitive impairment affects more than 50% of the MS patients. Another shifting paradigm was the involvement of gray matter in MS pathology, formerly considered to be a white matter disease. Additionally, the identification of different T cell immune subsets and the mechanisms underlying the involvement of B cells and peripheral macrophages provided a better understanding of the immunopathophysiological processes present in MS. Relevantly, the gut-brain axis, recognized as a bi-directional communication system between the CNS and the gut, was found to be crucial in MS. Indeed, gut microbiota influences not only different susceptibilities to MS pathology, but it can also be modulated in order to positively act in MS course. Also, after the identification of the first microRNA in 1993, the role of microRNAs has been investigated in MS, either as potential biomarkers or therapeutic agents. Finally, concerning MS therapeutical approaches, remyelination-based studies have arisen on the spotlight aiming to repair myelin loss/neuronal connectivity. Altogether, here we emphasize the new insights of remarkable women that have voiced the impact of cognitive impairment, white and gray matter pathology, immune response, and that of the CNS-peripheral interplay on MS diagnosis, progression, and/or therapy efficacy, leading to huge breakthroughs in the MS field.
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Affiliation(s)
- Andreia Barateiro
- Central Nervous System, Blood and Peripheral Inflammation Lab, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal,Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal,Andreia Barateiro,
| | - Catarina Barros
- Central Nervous System, Blood and Peripheral Inflammation Lab, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Maria V. Pinto
- Central Nervous System, Blood and Peripheral Inflammation Lab, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Rita Ribeiro
- Central Nervous System, Blood and Peripheral Inflammation Lab, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Ainhoa Alberro
- Central Nervous System, Blood and Peripheral Inflammation Lab, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal,Multiple Sclerosis Group, Biodonostia Health Research Institute, Donostia-San Sebastian, Spain
| | - Adelaide Fernandes
- Central Nervous System, Blood and Peripheral Inflammation Lab, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal,Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal,*Correspondence: Adelaide Fernandes,
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Saeidi N, Goudarzvand H, Mohammadi H, Mardi A, Ghoreishizadeh S, Shomali N, Goudarzvand M. Dysregulation of miR-193a serves as a potential contributor to MS pathogenesis via affecting RhoA and Rock1. Mult Scler Relat Disord 2023; 69:104468. [PMID: 36529069 DOI: 10.1016/j.msard.2022.104468] [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: 05/02/2022] [Revised: 11/30/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Multiple sclerosis (MS) is one of the most common neurological diseases that cause chronic inflammation of the central nervous system and demyelination of the myelin sheath. At present, microRNAs (miRNAs) are considered not only a diagnostic and prognostic indicator of diseases but also a new goal in gene therapy. This study aims to find a simple, non-invasive, valuable biomarker for early detection and potential treatment of MS. METHODS In the present study, 30 patients with MS were included. The qRT-PCR method was performed to evaluate the expression level of miR-193a, RhoA, and ROCK1. Besides, western blotting was performed to determine the expression level of RhoA and ROCK1 at protein levels. Moreover, we aimed to clarify the possible correlation between miR-193a-5p and its-regulated target genes so that miR-193a-5p mimic was transfected into MS-derived cultured PBMSs, and the expression level of RhoA and ROCK1 were then evaluated by qRT-PCR and Western blotting. In the final step, the correlation between miR-193a-5p and clinicopathological features of patients was investigated. RESULTS Results showed that miR-193a was decreased while RhoA and ROCK1 were up-regulated in PBMCs obtained from patients with MS compared to the control group. It was also revealed that miR-193a transfection reduced RhoA and ROCK1 expression at mRNA and protein levels. The results from the Chi-square analysis showed that down-regulation of miR-193a was associated with increased CRP level, CSF IgG positivity, and MSSS (Multiple Sclerosis Severity Score), suggesting miR-193a is a potential diagnostic and prognostic indicator. CONCLUSION We implied that miR-193a could modulate RhoA and ROCK 1 expression in MS patients, in which its down-regulation leads to increased expression of RhoA and ROCK1 and poor prognosis of patients with MS. Therefore, miR-193a and its associated targets could serve potential prognostic, diagnostic, and therapeutic efficacy in MS patients.
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Affiliation(s)
- Nasim Saeidi
- DNA Laboratory, Analytical Laboratories, Hamilton, New Zealand
| | | | - Hamed Mohammadi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Amirhossein Mardi
- Department of Immunology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Shadi Ghoreishizadeh
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Navid Shomali
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Goudarzvand
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran; Department of Physiology and Pharmacology, Faculty of Medicine, Alborz University of Medical Sciences, Karaj, Iran.
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6
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The role of non-coding RNAs in neuroinflammatory process in multiple sclerosis. Mol Neurobiol 2022; 59:4651-4668. [PMID: 35589919 DOI: 10.1007/s12035-022-02854-y] [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: 01/04/2022] [Accepted: 04/23/2022] [Indexed: 10/18/2022]
Abstract
Multiple sclerosis (MS) is a central nervous system chronic neuroinflammatory disease followed by neurodegeneration. The diagnosis is based on clinical presentation, cerebrospinal fluid testing and magnetic resonance imagining. There is still a lack of a diagnostic blood-based biomarker for MS. Due to the cost and difficulty of diagnosis, new and more easily accessible methods are being sought. New biomarkers should also allow for early diagnosis. Additionally, the treatment of MS should lead to the personalization of the therapy. MicroRNAs (miRNAs) and long non-coding RNAs (lncRNAs) as well as their target genes participate in pathophysiology processes in MS. Although the detailed mechanism of action of non-coding RNAs (ncRNAs, including miRNAs and lncRNAs) on neuroinflammation in MS has not been fully explained, several studies were conducted aiming to analyse their impact in MS. In this article, we review up-to-date knowledge on the latest research concerning the ncRNAs in MS and evaluate their role in neuroinflammation. We also point out the most promising ncRNAs which may be promising in MS as diagnostic and prognostic biomarkers.
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7
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Zhan J, Fegg FN, Kaddatz H, Rühling S, Frenz J, Denecke B, Amor S, Ponsaerts P, Hochstrasser T, Kipp M. Focal white matter lesions induce long-lasting axonal degeneration, neuroinflammation and behavioral deficits. Neurobiol Dis 2021; 155:105371. [PMID: 33932559 DOI: 10.1016/j.nbd.2021.105371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/25/2021] [Accepted: 04/26/2021] [Indexed: 12/16/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) with episodes of inflammatory demyelination and remyelination. While remyelination has been linked with functional recovery in MS patients, there is evidence of ongoing tissue damage despite complete myelin repair. In this study, we investigated the long-term consequences of an acute demyelinating white matter CNS lesion. For this purpose, acute demyelination was induced by 5-week-cuprizone intoxication in male C57BL/6 J mice, and the tissues were examined after a 7-month recovery period. While myelination and oligodendrocyte densities appeared normal, ongoing axonal degeneration and glia cell activation were found in the remyelinated corpus callosum. Neuropathologies were paralleled by subtle gait abnormalities evaluated using DigiGait™ high speed ventral plane videography. Gene array analyses revealed increased expression levels of various inflammation related genes, among protein kinase c delta (PRKCD). Immunofluorescence stains revealed predominant microglia/macrophages PRKCD expression in both, cuprizone tissues and post-mortem MS lesions. These results support the hypothesis that chronic microglia/macrophages driven tissue injury represents a key aspect of progressive neurodegeneration and functional decline in MS.
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Affiliation(s)
- Jiangshan Zhan
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany; Department of Anatomy II, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Florian Nepomuk Fegg
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany; Department of Anatomy II, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Hannes Kaddatz
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany; Department of Anatomy II, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Sebastian Rühling
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany; Department of Anatomy II, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Julia Frenz
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany; Department of Anatomy II, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Bernd Denecke
- Interdisciplinary Center for Clinical Research Aachen (IZKF Aachen), RWTH Aachen University, Aachen, Germany
| | - Sandra Amor
- Department of Pathology, Amsterdam UMC, VUMC site, Amsterdam, the Netherlands; Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Peter Ponsaerts
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp 2610, Belgium
| | - Tanja Hochstrasser
- Department of Anatomy II, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Markus Kipp
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany; Center for Transdisciplinary Neurosciences Rostock (CTNR), Rostock University Medical Center, Gelsheimer Strasse 20, 18147 Rostock, Germany.
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Walsh AD, Nguyen LT, Binder MD. miRNAs in Microglia: Important Players in Multiple Sclerosis Pathology. ASN Neuro 2021; 13:1759091420981182. [PMID: 33517686 PMCID: PMC7863159 DOI: 10.1177/1759091420981182] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Microglia are the resident immune cells of the central nervous system and important regulators of brain homeostasis. Central to this role is a dynamic phenotypic plasticity that enables microglia to respond to environmental and pathological stimuli. Importantly, different microglial phenotypes can be both beneficial and detrimental to central nervous system health. Chronically activated inflammatory microglia are a hallmark of neurodegeneration, including the autoimmune disease multiple sclerosis (MS). By contrast, microglial phagocytosis of myelin debris is essential for resolving inflammation and promoting remyelination. As such, microglia are being explored as a potential therapeutic target for MS. MicroRNAs (miRNAs) are short non-coding ribonucleic acids that regulate gene expression and act as master regulators of cellular phenotype and function. Dysregulation of certain miRNAs can aberrantly activate and promote specific polarisation states in microglia to modulate their activity in inflammation and neurodegeneration. In addition, miRNA dysregulation is implicated in MS pathogenesis, with circulating biomarkers and lesion specific miRNAs identified as regulators of inflammation and myelination. However, the role of miRNAs in microglia that specifically contribute to MS progression are still largely unknown. miRNAs are being explored as therapeutic agents, providing an opportunity to modulate microglial function in neurodegenerative diseases such as MS. This review will focus firstly on elucidating the complex role of microglia in MS pathogenesis. Secondly, we explore the essential roles of miRNAs in microglial function. Finally, we focus on miRNAs that are implicated in microglial processes that contribute directly to MS pathology, prioritising targets that could inform novel therapeutic approaches to MS.
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Affiliation(s)
- Alexander D Walsh
- The Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, Australia
| | - Linda T Nguyen
- The Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, Australia
| | - Michele D Binder
- The Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Melbourne, Australia
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9
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Baulina N, Kiselev I, Favorova O. Imprinted Genes and Multiple Sclerosis: What Do We Know? Int J Mol Sci 2021; 22:1346. [PMID: 33572862 PMCID: PMC7866243 DOI: 10.3390/ijms22031346] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/23/2021] [Accepted: 01/26/2021] [Indexed: 02/06/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic autoimmune neurodegenerative disease of the central nervous system that arises from interplay between non-genetic and genetic risk factors. The epigenetics functions as a link between these factors, affecting gene expression in response to external influence, and therefore should be extensively studied to improve the knowledge of MS molecular mechanisms. Among others, the epigenetic mechanisms underlie the establishment of parent-of-origin effects that appear as phenotypic differences depending on whether the allele was inherited from the mother or father. The most well described manifestation of parent-of-origin effects is genomic imprinting that causes monoallelic gene expression. It becomes more obvious that disturbances in imprinted genes at the least affecting their expression do occur in MS and may be involved in its pathogenesis. In this review we will focus on the potential role of imprinted genes in MS pathogenesis.
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Affiliation(s)
- Natalia Baulina
- Institute of Translational Medicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (I.K.); (O.F.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Ivan Kiselev
- Institute of Translational Medicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (I.K.); (O.F.)
| | - Olga Favorova
- Institute of Translational Medicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (I.K.); (O.F.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
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10
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Søndergaard HB, Airas L, Christensen JR, Nielsen BR, Börnsen L, Oturai A, Sellebjerg F. Pregnancy-Induced Changes in microRNA Expression in Multiple Sclerosis. Front Immunol 2021; 11:552101. [PMID: 33584638 PMCID: PMC7876450 DOI: 10.3389/fimmu.2020.552101] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 11/30/2020] [Indexed: 12/17/2022] Open
Abstract
Pregnancy affects the disease course in multiple sclerosis (MS), particularly in the third trimester, where the relapse rate is reduced by as much as two thirds. This study aimed at identifying changes in microRNA (miRNA) and immune cell phenotypes in pregnant MS patients. Discovery and validation studies to detect differentially expressed miRNAs were performed with quantitative real-time PCR on peripheral blood mononuclear cells (PBMC). Flow cytometry analysis was performed on PBMC stained with antibodies directed against surface markers of antigen presenting cells (APCs), NK-cells, NKT cells, CD4+ and CD8+ T cells and subsets of these cell types, including PDL1 and PDL2 expressing subsets. RNA was extracted from whole blood, monocytes, and NK-cells to investigate expression and correlation between regulated miRNAs and mRNAs. In total, 15 miRNAs were validated to be differentially expressed between third trimester pregnant and postpartum MS patients (Benjamini-Hochberg false discovery rate from p = 0.03–0.00004). Of these, 12 miRNAs were downregulated in pregnancy and 6 of the 15 miRNAs were altered by more than ±2-fold (+2.99- to -6.38-fold). Pregnant MS patients had a highly significant increase in the percentage of monocytes and a decrease of NK-cells and myeloid dendritic cells compared to non-pregnant MS patients. We confirm previous reports of a relative increase in CD56-bright NK-cells and a decrease in CD56-dim NK-cells in third trimester of pregnancy and report an increase in non-committed follicular helper cells. PDL1 and PDL2 expression was increased in pregnant patients together with IL10. Also, in monocytes IL10, PDL1, and PDL2 were upregulated whereas miR-1, miR-20a, miR-28, miR-95, miR-146a, miR-335, and miR-625 were downregulated between pregnant and untreated MS patients. IL10, PDL1, and PDL2 were predicted targets of MS pregnancy-changed miRNAs, further supported by their negative correlations. Additionally, previously identified pregnancy-regulated mRNAs were identified as predicted targets of the miRNAs. PDL1 and PDL2 bind PD-1 expressed on T cells with an inhibitory effect on T-cell proliferation and increase in IL10 production. These results indicate that some of the effects behind the disease-ameliorating third trimester of pregnancy might be caused by changed expression of miRNAs and immunoregulatory molecules in monocytes.
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Affiliation(s)
- Helle Bach Søndergaard
- Danish Multiple Sclerosis Center, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark
| | - Laura Airas
- Department of Neurology, Turku University Hospital, Turku, Finland
| | - Jeppe Romme Christensen
- Danish Multiple Sclerosis Center, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark
| | - Birgitte Romme Nielsen
- Danish Multiple Sclerosis Center, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark
| | - Lars Börnsen
- Danish Multiple Sclerosis Center, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark
| | - Annette Oturai
- Danish Multiple Sclerosis Center, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark
| | - Finn Sellebjerg
- Danish Multiple Sclerosis Center, Copenhagen University Hospital, Rigshospitalet, Glostrup, Denmark
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11
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Laliberte AM, Karadimas SK, Vidal PM, Satkunendrarajah K, Fehlings MG. Mir21 modulates inflammation and sensorimotor deficits in cervical myelopathy: data from humans and animal models. Brain Commun 2021; 3:fcaa234. [PMID: 33604572 PMCID: PMC7878254 DOI: 10.1093/braincomms/fcaa234] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 11/24/2020] [Accepted: 11/27/2020] [Indexed: 12/12/2022] Open
Abstract
Degenerative cervical myelopathy is a common condition resulting from chronic compression of the spinal cord by degenerating structures of the spine. Degenerative cervical myelopathy present a wide range of outcomes, and the biological factors underlying this variability are poorly understood. Previous studies have found elevated MIR21-5p in the sub-acute and chronic neuroinflammatory environment after spinal cord injury. As chronic spinal cord neuroinflammation is a major feature of degenerative cervical myelopathy, we hypothesized that MIR21-5p may be particularly relevant to disease pathobiology, and could serve as a potential biomarker. A prospective cohort study of 69 human degenerative cervical myelopathy patients (36 male:33 female) between the ages of 30 and 78 years was performed to identify the relationship between MIR21-5p expression, symptom severity and treatment outcomes. Results from this study identified a positive correlation between elevated plasma MIR21-5p expression, initial symptom severity and poor treatment outcomes. Subsequent validation of these relationships using a mouse model of degenerative cervical myelopathy identified a similar elevation of MIR21-5p expression at 6 and 12 weeks after onset, corresponding to moderate to severe neurological deficits. To further determine how MIR21-5p affects cervical myelopathy pathobiology, this mouse model was applied to a Mir21 knockout mouse line. Deletion of the Mir21 gene preserved locomotor function on rotarod and forced swim tests, but also resulted in increased nociception based on tail flick, Von Frey filament and electrophysiological testing. Critically, Mir21 knockout mice also had reduced spinal cord inflammation, demonstrated by the reduction of Iba1+ microglia by ∼50% relative to wild-type controls. In vitro experiments using primary microglial cultures confirmed that MIR21-5p expression was greatly increased after exposure to lipopolysaccharide (pro-inflammatory), Il4 (anti-inflammatory) and hypoxia. Mir21 knockout did not appear to alter the ability of microglia to respond to these stimuli, as expression of key pro- and anti-inflammatory response genes was not significantly altered. However, target prediction algorithms identified the IL6/STAT3 pathway as a potential downstream target of MIR21-5p, and subsequent in vitro testing found that expression of components of the IL6 receptor complex, Il6ra and Il6st, were significantly higher in Mir21 knockout microglia. In aggregate, these data show that Mir21 plays a role in the progression of motor deficits and neuroinflammatory modulation in degenerative cervical myelopathy. Given this role in neuroinflammation, and its association with poor patient outcomes, MIR21-5p represents a potential therapeutic target and a new marker for prognostication.
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Affiliation(s)
- Alex M Laliberte
- Division of Genetics and Development, Krembil Research Institute, University Health Network, Toronto, ON M5T2S8, Canada
| | - Spyridon K Karadimas
- Division of Genetics and Development, Krembil Research Institute, University Health Network, Toronto, ON M5T2S8, Canada
| | - Pia M Vidal
- Division of Genetics and Development, Krembil Research Institute, University Health Network, Toronto, ON M5T2S8, Canada
| | - Kajana Satkunendrarajah
- Division of Genetics and Development, Krembil Research Institute, University Health Network, Toronto, ON M5T2S8, Canada
| | - Michael G Fehlings
- Division of Genetics and Development, Krembil Research Institute, University Health Network, Toronto, ON M5T2S8, Canada
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12
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Zhou J, Zhao H, Zhang L, Li Q, Huang Z, Zhao Z, Ke H, Xiao Y, Su X, Liu Q, Yang S, Zhao L. MiRNA-seq analysis of spleen and head kidney tissue from aquacultured largemouth bass (Micropterus salmoides) in response to Aeromonas hydrophila infection. Funct Integr Genomics 2021; 21:101-111. [PMID: 33442859 DOI: 10.1007/s10142-020-00763-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 12/17/2022]
Abstract
Recently, the same fish diseases, which have been found in pond farming, have been found in the newly tested largemouth bass (Micropterus salmoides) system. Bacterial septicemia caused by Aeromonas hydrophila occurs frequently in largemouth bass culture leading to significant economic losses. To investigate the role miRNA in the largemouth bass disease resistance, twelve (2 tissues (spleen and head kidney) × 2 experimental groups (infected and control) × three biological replicates) small RNA libraries were constructed and sequenced with miRNA-seq. A total of 26 differentially expressed miRNAs, 8 upregulated and 18 downregulated, were identified in the spleen, and 19 differentially expressed miRNAs, 9 upregulated and 10 downregulated, were identified in head kidney (fold change ≥ 2 or ≤ 0.5 and P ≤ 0.05). The differentially expressed miRNAs with the largest fold change were selected for target gene prediction using GO and KEGG analysis. Six miRNAs in the spleen and 5 miRNAs in the head kidney were selected. Analysis showed that, of all the immune and metabolic pathways, the FoxO signaling pathway was enriched in both the spleen and head kidney groups. Common target genes of the pathway included AMP-activated catalytic subunit alpha 1 (prkaa1), phosphatidylinositol 3-kinase (pik3r3b), serine/threonine-protein kinase (plk2), and forkhead box protein G1 (foxg1a). MiRNAs (such as miR-126-5P, miR-126-3P) are involved in immune response and cell cycle functions as they regulate targeted genes in the FoxO pathway. These results will enhance our understanding of the molecular mechanisms underlying immune responses to bacterial septicemia and facilitate molecular-assisted selection of resistant strains of largemouth bass.
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Affiliation(s)
- Jian Zhou
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Han Zhao
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Lu Zhang
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Qiang Li
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Zhipeng Huang
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Zhongmeng Zhao
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Hongyu Ke
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Yu Xiao
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Xutao Su
- Fisheries Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 611731, Sichuan, China
| | - Qiao Liu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Song Yang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Liulan Zhao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
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13
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Kakan SS, Janga SR, Cooperman B, Craig DW, Edman MC, Okamoto CT, Hamm-Alvarez SF. Small RNA Deep Sequencing Identifies a Unique miRNA Signature Released in Serum Exosomes in a Mouse Model of Sjögren's Syndrome. Front Immunol 2020; 11:1475. [PMID: 32849505 PMCID: PMC7396589 DOI: 10.3389/fimmu.2020.01475] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/05/2020] [Indexed: 12/18/2022] Open
Abstract
Sjögren's Syndrome (SS) is an autoimmune disease characterized by lymphocytic infiltration and loss of function of moisture-producing exocrine glands as well as systemic inflammation. SS diagnosis is cumbersome, subjective and complicated by manifestation of symptoms that overlap with those of other rheumatic and ocular diseases. Definitive diagnosis averages 4–5 years and this delay may lead to irreversible tissue damage. Thus, there is an urgent need for diagnostic biomarkers for earlier detection of SS. Extracellular vesicles called exosomes carry functional small non-coding RNAs which play a critical role in maintaining cellular homeostasis via transcriptional and translational regulation of mRNA. Alterations in levels of specific exosomal miRNAs may be predictive of disease status. Here, we have assessed serum exosomal RNA using next generation sequencing in a discovery cohort of the NOD mouse, a model of early-intermediate SS, to identify dysregulated miRNAs that may be indicative of SS. We found five miRNAs upregulated in serum exosomes of NOD mice with an adjusted p < 0.05—miRNA-127-3p, miRNA-409-3p, miRNA-410-3p, miRNA-541-5p, and miRNA-540-5p. miRNAs 127-3p and 541-5p were also statistically significantly upregulated in a validation cohort of NOD mice. Pathway analysis and existing literature indicates that differential expression of these miRNAs may dysregulate pathways involved in inflammation. Future studies will apply these findings in a human cohort to understand how they are correlated with manifestations of SS as well as understanding their functional role in systemic autoimmunity specific to SS.
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Affiliation(s)
- Shruti Singh Kakan
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States
| | - Srikanth R Janga
- Department of Ophthalmology, Keck School of Medicine, Roski Eye Institute, University of Southern California, Los Angeles, CA, United States
| | - Benjamin Cooperman
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States
| | - David W Craig
- Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Maria C Edman
- Department of Ophthalmology, Keck School of Medicine, Roski Eye Institute, University of Southern California, Los Angeles, CA, United States
| | - Curtis T Okamoto
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States
| | - Sarah F Hamm-Alvarez
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States.,Department of Ophthalmology, Keck School of Medicine, Roski Eye Institute, University of Southern California, Los Angeles, CA, United States
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14
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Shabani Sadr NK, Shafiei M, Galehdari H, Khirolah A. The Effect of Sialic Acid on the Expression of miR-218, NF-kB, MMP-9, and TIMP-1. Biochem Genet 2020; 58:883-900. [PMID: 32607676 DOI: 10.1007/s10528-020-09981-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 06/17/2020] [Indexed: 01/29/2023]
Abstract
Sialic acid (N-acetylneuraminic acid, NANA) is found at all cell surfaces of vertebrates. Although it is widely accepted that sialic acid is an essential substrate for brain development via a significant role in nerve transfers, structure of glycosides, and synaptogenesis phenomena, there are some reports on the elevated levels of sialic acid and prevalence of neurodegeneration. Matrix metalloproteases (MMPs) and tissue inhibitor of metalloproteinases (TIMPs) are involved in neuroinflammation disorders and produced by many cell types, including activated T cells, macrophages, neurons, astrocytes, and microglial cells. It can be hypothesized that sialic acid may have a potentially critical role in regulation of a wide range of uncovered neurodegeneration factors as its downstream targets. In this study, for the first time, we aimed to analyze the possible effect of the sialic acid solution exposure in the human C118 cell line, which was derived from a human brain astrocytoma (glial cells), on the expression patterns of miR-218, NF-kB, MMP-9, and TIMP-1. For MMP-9, protein levels were studied too. Half maximal inhibitory concentration (IC50) value of NANA was obtained by MTT assay. Glial cell line was treated with sialic acid (300, 500, and 1000 µg/ml) for 24 h to investigate the effects of this ligand on the expression of miR-218, NF-kB, MMP-9, and TIMP-1 genes. Protein levels were checked by Western blotting, and by using zymography, the gelatinolytic activity of MMP-9 secreted into conditioned media was assayed. At 300 µM, 500 µM, and 1000 µM sialic acid treatments, the expression of miR-218 was downregulated; subsequently, the NF-kB, MMP-9, and TIMP-1 genes as well as their protein expressions were upregulated. More interestingly, the enzyme activity of secreted MMP-9 was upregulated too (p-values ≤ 0.05). This study could demonstrate the significant effect of sialic acid on miR-218, NF-kB, MMP-9 , and TIMP-1 expressions in gene and protein levels and also the levels of enzyme activity of secreted MMP-9. Therefore, provided information indicates the novel idea of a possible linkage between sialic acid species and regulation of these neuroinflammation genes in Glial cell line.
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Affiliation(s)
- Narjes Khatoun Shabani Sadr
- Department of Genetics, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran.,Biotechnology and Bioscience Research Center, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohammad Shafiei
- Department of Genetics, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran. .,Biotechnology and Bioscience Research Center, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Hamid Galehdari
- Department of Genetics, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran.,Biotechnology and Bioscience Research Center, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Alireza Khirolah
- Cellular and Molecular Research Center, Department of Clinical Biochemistry, School of Medicine, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran
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15
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Mohammed EM. Environmental Influencers, MicroRNA, and Multiple Sclerosis. J Cent Nerv Syst Dis 2020; 12:1179573519894955. [PMID: 32009827 PMCID: PMC6971968 DOI: 10.1177/1179573519894955] [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: 08/06/2019] [Accepted: 11/25/2019] [Indexed: 02/06/2023] Open
Abstract
Multiple sclerosis (MS) is a complex neurological disorder characterized by an aberrant immune system that affects patients' quality of life. Several environmental factors have previously been proposed to associate with MS pathophysiology, including vitamin D deficiency, Epstein-Barr virus (EBV) infection, and cigarette smoking. These factors may influence cellular molecularity, interfering with cellular proliferation, differentiation, and apoptosis. This review argues that small noncoding RNA named microRNA (miRNA) influences these factors' mode of action. Dysregulation in the miRNAs network may deeply impact cellular hemostasis, thereby possibly resulting in MS pathogenicity. This article represents a literature review and an author's theory of how environmental factors may induce dysregulations in the miRNAs network, which could ultimately affect MS pathogenicity.
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16
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Batool A, Hill TDM, Nguyen NT, Langa E, Diviney M, Mooney C, Brennan GP, Connolly NMC, Sanz-Rodriguez A, Cavanagh BL, Henshall DC. Altered Biogenesis and MicroRNA Content of Hippocampal Exosomes Following Experimental Status Epilepticus. Front Neurosci 2020; 13:1404. [PMID: 32009885 PMCID: PMC6978807 DOI: 10.3389/fnins.2019.01404] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/12/2019] [Indexed: 12/14/2022] Open
Abstract
Repetitive or prolonged seizures (status epilepticus) can damage neurons within the hippocampus, trigger gliosis, and generate an enduring state of hyperexcitability. Recent studies have suggested that microvesicles including exosomes are released from brain cells following stimulation and tissue injury, conveying contents between cells including microRNAs (miRNAs). Here, we characterized the effects of experimental status epilepticus on the expression of exosome biosynthesis components and analyzed miRNA content in exosome-enriched fractions. Status epilepticus induced by unilateral intra-amygdala kainic acid in mice resulted in acute subfield-specific, bi-directional changes in hippocampal transcripts associated with exosome biosynthesis including up-regulation of endosomal sorting complexes required for transport (ESCRT)-dependent and -independent pathways. Increased expression of exosome components including Alix were detectable in samples obtained 2 weeks after status epilepticus and changes occurred in both the ipsilateral and contralateral hippocampus. RNA sequencing of exosome-enriched fractions prepared using two different techniques detected a rich diversity of conserved miRNAs and showed that status epilepticus selectively alters miRNA contents. We also characterized editing sites of the exosome-enriched miRNAs and found six exosome-enriched miRNAs that were adenosine-to-inosine (ADAR) edited with the majority of the editing events predicted to occur within miRNA seed regions. However, the prevalence of these editing events was not altered by status epilepticus. These studies demonstrate that status epilepticus alters the exosome pathway and its miRNA content, but not editing patterns. Further functional studies will be needed to determine if these changes have pathophysiological significance for epileptogenesis.
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Affiliation(s)
- Aasia Batool
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Thomas D M Hill
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.,FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Ngoc T Nguyen
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.,FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Elena Langa
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.,FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Mairéad Diviney
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Catherine Mooney
- FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland.,School of Computer Science, University College Dublin, Dublin, Ireland
| | - Gary P Brennan
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.,FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Niamh M C Connolly
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Amaya Sanz-Rodriguez
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.,FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Brenton L Cavanagh
- Cellular and Molecular Imaging Core, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - David C Henshall
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.,FutureNeuro SFI Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
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17
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Juźwik CA, S Drake S, Zhang Y, Paradis-Isler N, Sylvester A, Amar-Zifkin A, Douglas C, Morquette B, Moore CS, Fournier AE. microRNA dysregulation in neurodegenerative diseases: A systematic review. Prog Neurobiol 2019; 182:101664. [PMID: 31356849 DOI: 10.1016/j.pneurobio.2019.101664] [Citation(s) in RCA: 266] [Impact Index Per Article: 53.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 05/15/2019] [Accepted: 07/18/2019] [Indexed: 12/15/2022]
Abstract
While the root causes for individual neurodegenerative diseases are distinct, many shared pathological features and mechanisms contribute to neurodegeneration across diseases. Altered levels of microRNAs, small non-coding RNAs involved in post transcriptional regulation of gene expression, are reported for numerous neurodegenerative diseases. Yet, comparison between diseases to uncover commonly dysregulated microRNAs during neurodegeneration in general is lagging. We performed a systematic review of peer-reviewed publications describing differential microRNA expression in neurodegenerative diseases and related animal models. We compiled the results from studies covering the prevalent neurodegenerative diseases in the literature: Alzheimer's disease, amyotrophic lateral sclerosis, age-related macular degeneration, ataxia, dementia, myotonic dystrophy, epilepsy, glaucoma, Huntington's disease, multiple sclerosis, Parkinson's disease, and prion disorders. MicroRNAs which were dysregulated most often in these diseases and their models included miR-9-5p, miR-21-5p, the miR-29 family, miR-132-3p, miR-124-3p, miR-146a-5p, miR-155-5p, and miR-223-3p. Common pathways targeted by these predominant miRNAs were identified and revealed great functional overlap across diseases. We also identified a strong role for each microRNA in both the neural and immune components of diseases. microRNAs regulate broad networks of genes and identifying microRNAs commonly dysregulated across neurodegenerative diseases could cultivate novel hypotheses related to common molecular mechanisms underlying neurodegeneration.
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Affiliation(s)
- Camille A Juźwik
- McGill University, Montréal Neurological Institute, 3801 University Street, room BT-109, Montréal, QC, H3A 2B4, Canada.
| | - Sienna S Drake
- McGill University, Montréal Neurological Institute, 3801 University Street, room BT-109, Montréal, QC, H3A 2B4, Canada.
| | - Yang Zhang
- McGill University, Montréal Neurological Institute, 3801 University Street, room BT-109, Montréal, QC, H3A 2B4, Canada.
| | - Nicolas Paradis-Isler
- McGill University, Montréal Neurological Institute, 3801 University Street, room BT-109, Montréal, QC, H3A 2B4, Canada.
| | - Alexandra Sylvester
- McGill University, Montréal Neurological Institute, 3801 University Street, room BT-109, Montréal, QC, H3A 2B4, Canada.
| | - Alexandre Amar-Zifkin
- McGill University Health Centre- Medical Libraries, 3801 University Street, Montréal, QC, H3A 2B4, Canada.
| | - Chelsea Douglas
- Program Manager, Plotly Technologies Inc, 5555 Gaspe Avenue #118, Montréal, QC, H2T 2A3, Canada.
| | - Barbara Morquette
- McGill University, Montréal Neurological Institute, 3801 University Street, room BT-109, Montréal, QC, H3A 2B4, Canada.
| | - Craig S Moore
- Division of BioMedical Sciences Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, Canada.
| | - Alyson E Fournier
- McGill University, Montréal Neurological Institute, 3801 University Street, room BT-109, Montréal, QC, H3A 2B4, Canada.
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18
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Baulina N, Osmak G, Kiselev I, Popova E, Boyko A, Kulakova O, Favorova O. MiRNAs from DLK1-DIO3 Imprinted Locus at 14q32 are Associated with Multiple Sclerosis: Gender-Specific Expression and Regulation of Receptor Tyrosine Kinases Signaling. Cells 2019; 8:cells8020133. [PMID: 30743997 PMCID: PMC6406543 DOI: 10.3390/cells8020133] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/01/2019] [Accepted: 02/07/2019] [Indexed: 02/07/2023] Open
Abstract
Relapsing-remitting multiple sclerosis (RRMS) is the most prevalent course of multiple sclerosis. It is an autoimmune inflammatory disease of the central nervous system. To investigate the gender-specific involvement of microRNAs (miRNAs) in RRMS pathogenesis, we compared miRNA profiles in peripheral blood mononuclear cells separately in men and women (eight RRMS patients versus four healthy controls of each gender) using high-throughput sequencing. In contrast to women, six downregulated and 26 upregulated miRNAs (padj < 0.05) were identified in men with RRMS. Genes encoding upregulated miRNAs are co-localized in DLK1-DIO3 imprinted locus on human chromosome 14q32. Reverse transcription quantitative polymerase chain reaction (RT-qPCR) analysis was performed in independent groups of men (16 RRMS patients and 10 healthy controls) and women (20 RRMS patients and 10 healthy controls). Increased expression of miR-431, miR-127-3p, miR-379, miR-376c, miR-381, miR-410 and miR-656 was again demonstrated in male (padj < 0.05), but not in female RRMS patients. At the same time, the expression levels of these miRNAs were lower in healthy men than in healthy women, whereas in RRMS men they increased and reached or exceeded levels in RRMS women. In general, we demonstrated that expression levels of these miRNAs depend both on “health–disease” status and gender. Network-based enrichment analysis identified that receptor tyrosine kinases-activated pathways were enriched with products of genes targeted by miRNAs from DLK1-DIO3 locus. These results suggest the male-specific involvement of these miRNAs in RRMS pathogenesis via regulation of PI3K/Akt signaling.
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Affiliation(s)
- Natalia Baulina
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia.
| | - German Osmak
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia.
| | - Ivan Kiselev
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia.
| | - Ekaterina Popova
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia.
| | - Alexey Boyko
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia.
| | - Olga Kulakova
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia.
| | - Olga Favorova
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia.
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19
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Liguori M, Nuzziello N, Licciulli F, Consiglio A, Simone M, Viterbo RG, Creanza TM, Ancona N, Tortorella C, Margari L, Grillo G, Giordano P, Liuni S, Trojano M. Combined microRNA and mRNA expression analysis in pediatric multiple sclerosis: an integrated approach to uncover novel pathogenic mechanisms of the disease. Hum Mol Genet 2019; 27:66-79. [PMID: 29087462 DOI: 10.1093/hmg/ddx385] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 10/23/2017] [Indexed: 12/12/2022] Open
Abstract
Multiple sclerosis (MS) is a complex disease of the CNS that usually affects young adults, although 3-5% of cases are diagnosed in childhood and adolescence (hence called pediatric MS, PedMS). Genetic predisposition, among other factors, seems to contribute to the risk of the onset, in pediatric as in adult ages, but few studies have investigated the genetic 'environmentally naïve' load of PedMS. The main goal of this study was to identify circulating markers (miRNAs), target genes (mRNAs) and functional pathways associated with PedMS; we also verified the impact of miRNAs on clinical features, i.e. disability and cognitive performances. The investigation was performed in 19 PedMS and 20 pediatric controls (PCs) using a High-Throughput Next-generation Sequencing (HT-NGS) approach followed by an integrated bioinformatics/biostatistics analysis. Twelve miRNAs were significantly upregulated (let-7a-5p, let-7b-5p, miR-25-3p, miR-125a-5p, miR-942-5p, miR-221-3p, miR-652-3p, miR-182-5p, miR-185-5p, miR-181a-5p, miR-320a, miR-99b-5p) and 1 miRNA was downregulated (miR-148b-3p) in PedMS compared with PCs. The interactions between the significant miRNAs and their targets uncovered predicted genes (i.e. TNFSF13B, TLR2, BACH2, KLF4) related to immunological functions, as well as genes involved in autophagy-related processes (i.e. ATG16L1, SORT1, LAMP2) and ATPase activity (i.e. ABCA1, GPX3). No significant molecular profiles were associated with any PedMS demographic/clinical features. Both miRNAs and mRNA expressions predicted the phenotypes (PedMS-PC) with an accuracy of 92% and 91%, respectively. In our view, this original strategy of contemporary miRNA/mRNA analysis may help to shed light in the genetic background of the disease, suggesting further molecular investigations in novel pathogenic mechanisms.
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Affiliation(s)
- Maria Liguori
- National Research Council of Italy, Department of Biomedicine, Institute of Biomedical Technologies, Bari Section, 70125 Bari, Italy
| | - Nicoletta Nuzziello
- National Research Council of Italy, Department of Biomedicine, Institute of Biomedical Technologies, Bari Section, 70125 Bari, Italy.,Department of Basic Sciences, Neurosciences and Sense Organs, University of Bari, 70125 Bari, Italy
| | - Flavio Licciulli
- National Research Council of Italy, Department of Biomedicine, Institute of Biomedical Technologies, Bari Section, 70125 Bari, Italy
| | - Arianna Consiglio
- National Research Council of Italy, Department of Biomedicine, Institute of Biomedical Technologies, Bari Section, 70125 Bari, Italy
| | - Marta Simone
- Department of Basic Sciences, Neurosciences and Sense Organs, University of Bari, 70125 Bari, Italy
| | - Rosa Gemma Viterbo
- Department of Basic Sciences, Neurosciences and Sense Organs, University of Bari, 70125 Bari, Italy
| | - Teresa Maria Creanza
- National Research Council of Italy, Department of Engineering, ICT and Technology for Energy and Transportation, Institute of Intelligent Systems for Automation, 70125 Bari, Italy
| | - Nicola Ancona
- National Research Council of Italy, Department of Engineering, ICT and Technology for Energy and Transportation, Institute of Intelligent Systems for Automation, 70125 Bari, Italy
| | - Carla Tortorella
- Department of Basic Sciences, Neurosciences and Sense Organs, University of Bari, 70125 Bari, Italy.,Department of Neurosciences, San Camillo Forlanini Hospital, 00185 Rome, Italy
| | - Lucia Margari
- Department of Basic Sciences, Neurosciences and Sense Organs, University of Bari, 70125 Bari, Italy
| | - Giorgio Grillo
- National Research Council of Italy, Department of Biomedicine, Institute of Biomedical Technologies, Bari Section, 70125 Bari, Italy
| | - Paola Giordano
- General Paediatric Unit "B. Trambusti", Azienda Policlinico-Giovanni XXIII and University of Bari, 70125 Bari, Italy
| | - Sabino Liuni
- National Research Council of Italy, Department of Biomedicine, Institute of Biomedical Technologies, Bari Section, 70125 Bari, Italy
| | - Maria Trojano
- Department of Basic Sciences, Neurosciences and Sense Organs, University of Bari, 70125 Bari, Italy
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Hwang JY, Kim ST, Kwon J, Lee J, Chun YO, Han JS, Han HS. Ultrasensitive Fluorescence Monitoring and in Vivo Live Imaging of Circulating Tumor Cell-Derived miRNAs Using Molecular Beacon System. ACS Sens 2018; 3:2651-2659. [PMID: 30426747 DOI: 10.1021/acssensors.8b01095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Circulating tumor cells (CTCs) have considerable clinical significance in cancer progression and prognosis. In this context, CTC-derived microRNAs (miRs) in blood and tissues have been proposed as the novel noninvasive biomarkers for monitoring tumor progression, especially at the early stages. To monitor circulating miRs, a tool should have high sensitivity, be a simple procedure, and allow detection in very small volumes. Thus, we designed a sensing tool for sensitive monitoring of blood or tissue miRs using a fluorophore-quencher probe-based molecular beacon (MB). This MB-based tool displayed an ultrasensitive limit of detection (LOD) level of 6.7 × 10-17 M and 8.7 × 10-17 for metastasis-derived miR-21a and miR-221, respectively. It also can discriminate miR-21a/221 from both guide strand miRs and its precursor forms (pre-miR). Furthermore, the tool discriminated between blood and tissue-related miR-21a/221-expression and detected metastasis and epithelial-mesenchymal transition and also describe a noninvasive miR fluorescence imaging of CTCs in a mouse model, showing the potential for clinical diagnosis and prognosis.
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Affiliation(s)
- Ji Yeon Hwang
- Preclinical Research Center, Biomedical Research Institute, Seoul National University Bundang Hospital, Gyeonggi-do 13620, Republic of Korea
- The Institute for the 3Rs, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Sang Tae Kim
- Department of Surgery, Seoul National University Bundang Hospital, Gyeonggi-do 13620, Republic of Korea
- Biomedical Research Institute, Seoul National University Bundang Hospital, Gyeonggi-do 13605, Republic of Korea
| | - Junyoung Kwon
- Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 46240, Republic of Korea
| | - Jaebeom Lee
- Department of Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Young-Ok Chun
- Biomedical Research Institute, Seoul National University Bundang Hospital, Gyeonggi-do 13605, Republic of Korea
- Department of Molecular Biology, DanKook University, Gyeonggi-do 16890, Republic of Korea
| | - Jin Soo Han
- The Institute for the 3Rs, College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Ho-Seong Han
- Department of Surgery, Seoul National University Bundang Hospital, Gyeonggi-do 13620, Republic of Korea
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Thomas KT, Gross C, Bassell GJ. microRNAs Sculpt Neuronal Communication in a Tight Balance That Is Lost in Neurological Disease. Front Mol Neurosci 2018; 11:455. [PMID: 30618607 PMCID: PMC6299112 DOI: 10.3389/fnmol.2018.00455] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 11/26/2018] [Indexed: 12/13/2022] Open
Abstract
Since the discovery of the first microRNA 25 years ago, microRNAs (miRNAs) have emerged as critical regulators of gene expression within the mammalian brain. miRNAs are small non-coding RNAs that direct the RNA induced silencing complex to complementary sites on mRNA targets, leading to translational repression and/or mRNA degradation. Within the brain, intra- and extracellular signaling events tune the levels and activities of miRNAs to suit the needs of individual neurons under changing cellular contexts. Conversely, miRNAs shape neuronal communication by regulating the synthesis of proteins that mediate synaptic transmission and other forms of neuronal signaling. Several miRNAs have been shown to be critical for brain function regulating, for example, enduring forms of synaptic plasticity and dendritic morphology. Deficits in miRNA biogenesis have been linked to neurological deficits in humans, and widespread changes in miRNA levels occur in epilepsy, traumatic brain injury, and in response to less dramatic brain insults in rodent models. Manipulation of certain miRNAs can also alter the representation and progression of some of these disorders in rodent models. Recently, microdeletions encompassing MIR137HG, the host gene which encodes the miRNA miR-137, have been linked to autism and intellectual disability, and genome wide association studies have linked this locus to schizophrenia. Recent studies have demonstrated that miR-137 regulates several forms of synaptic plasticity as well as signaling cascades thought to be aberrant in schizophrenia. Together, these studies suggest a mechanism by which miRNA dysregulation might contribute to psychiatric disease and highlight the power of miRNAs to influence the human brain by sculpting communication between neurons.
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Affiliation(s)
- Kristen T. Thomas
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, TN, United States
| | - Christina Gross
- Division of Neurology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, United States
| | - Gary J. Bassell
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, United States
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, United States
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22
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Juźwik CA, Drake S, Lécuyer MA, Johnson RM, Morquette B, Zhang Y, Charabati M, Sagan SM, Bar-Or A, Prat A, Fournier AE. Neuronal microRNA regulation in Experimental Autoimmune Encephalomyelitis. Sci Rep 2018; 8:13437. [PMID: 30194392 PMCID: PMC6128870 DOI: 10.1038/s41598-018-31542-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 08/21/2018] [Indexed: 01/02/2023] Open
Abstract
Multiple sclerosis (MS) is an autoimmune, neurodegenerative disease but the molecular mechanisms underlying neurodegenerative aspects of the disease are poorly understood. microRNAs (miRNAs) are powerful regulators of gene expression that regulate numerous mRNAs simultaneously and can thus regulate programs of gene expression. Here, we describe miRNA expression in neurons captured from mice subjected to experimental autoimmune encephalomyelitis (EAE), a model of central nervous system (CNS) inflammation. Lumbar motor neurons and retinal neurons were laser captured from EAE mice and miRNA expression was assessed by next-generation sequencing and validated by qPCR. We describe 14 miRNAs that are differentially regulated in both neuronal subtypes and determine putative mRNA targets though in silico analysis. Several upregulated neuronal miRNAs are predicted to target pathways that could mediate repair and regeneration during EAE. This work identifies miRNAs that are affected by inflammation and suggests novel candidates that may be targeted to improve neuroprotection in the context of pathological inflammation.
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Affiliation(s)
- Camille A Juźwik
- McGill University, Montréal Neurological Institute, Montréal, QC, H3A 2B4, Canada
| | - Sienna Drake
- McGill University, Montréal Neurological Institute, Montréal, QC, H3A 2B4, Canada
| | - Marc-André Lécuyer
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montréal, QC, H2X 0A9, Canada
| | - Radia Marie Johnson
- McGill University, Goodman Cancer Research Centre, Montréal, H3A 1A3, Canada
| | - Barbara Morquette
- McGill University, Montréal Neurological Institute, Montréal, QC, H3A 2B4, Canada
| | - Yang Zhang
- McGill University, Montréal Neurological Institute, Montréal, QC, H3A 2B4, Canada
| | - Marc Charabati
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montréal, QC, H2X 0A9, Canada
| | - Selena M Sagan
- McGill University, Departments of Microbiology & Immunology and Biochemistry, Montréal, QC, H3G 0B1, Canada
| | - Amit Bar-Or
- McGill University, Montréal Neurological Institute, Montréal, QC, H3A 2B4, Canada
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Alexandre Prat
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montréal, QC, H2X 0A9, Canada
| | - Alyson E Fournier
- McGill University, Montréal Neurological Institute, Montréal, QC, H3A 2B4, Canada.
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23
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Ghadiri N, Emamnia N, Ganjalikhani-Hakemi M, Ghaedi K, Etemadifar M, Salehi M, Shirzad H, Nasr-Esfahani MH. Analysis of the expression of mir-34a, mir-199a, mir-30c and mir-19a in peripheral blood CD4+T lymphocytes of relapsing-remitting multiple sclerosis patients. Gene 2018; 659:109-117. [PMID: 29551498 DOI: 10.1016/j.gene.2018.03.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 01/13/2018] [Accepted: 03/14/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Multiple sclerosis is an immune-mediated inflammatory disease of central nervous system. MicroRNAs play important roles in autoimmune diseases such as MS. OBJECTIVES The aim was to evaluate the expression pattern of miR-34a, miR-199a, miR-30c and miR-19a in peripheral blood derived CD4+ T lymphocytes of both relapsing and remitting phases of MS. METHODS Blood samples from 40 RRMS patients (20 in relapsing and 20 in remitting phase) and 20 healthy volunteers were taken. CD4+ T cells were isolated. The expression level of miR-34a, miR-199a, miR-30c and miR-19a, and the percentage of Th17 and Treg cells were measured. Expression of master transcription factors of Th17 and Treg cells and several targets of these miRNAs were also evaluated. RESULTS Data indicated an increased expression of miR-34a, miR-30c and miR-19a in relapsing phase and decreased expression of miR-199a in remitting phase. ROC curve data add other prestigious information of miR-34a, miR-199a, miR-30c and miR-19a by defining relapsing and remitting phase and also healthy cases with high specificity and sensitivity at a proposed optimum cut-off point. CONCLUSION Collectively, we showed a correlation between the four miRNAs with different phases of MS and their possible involvement in differentiation pathways of Th17 cells, as the most important players in MS.
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Affiliation(s)
- Nooshin Ghadiri
- Immunology Department, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran; Department of Cellular Biotechnology at Cell Science research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Negaralsadat Emamnia
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-affiliation communicable disease, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Biology, Nour-e Danesh Institute of Higher Education, Meimeh, Iran; Department of Cellular Biotechnology at Cell Science research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | | | - Kamran Ghaedi
- Division of Cellular and Molecular Biology, Department of Biology, Faculty of Sciences, University of Isfahan, Isfahan, Iran; Department of Cellular Biotechnology at Cell Science research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
| | - Masoud Etemadifar
- Department of Neurosciences, Al-Zahra Hospital, Isfahan University of Medical Science, Isfahan, Iran
| | - Mansoor Salehi
- Department of Genetics, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hedayatollah Shirzad
- Immunology Department, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mohammad Hossein Nasr-Esfahani
- Department of Cellular Biotechnology at Cell Science research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
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Sajja VSSS, Jablonska A, Haughey N, Bulte JWM, Stevens RD, Long JB, Walczak P, Janowski M. Sphingolipids and microRNA Changes in Blood following Blast Traumatic Brain Injury: An Exploratory Study. J Neurotrauma 2017; 35:353-361. [PMID: 29020847 DOI: 10.1089/neu.2017.5009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
At present, accurate and reliable biomarkers to ascertain the presence, severity, or prognosis of blast traumatic brain injury (bTBI) are lacking. There is an urgent need to establish accurate and reliable biomarkers capable of mbTBI detection. Currently, there are no studies that identify changes in miRNA and lipids at varied severities of bTBI. Various biological components such as lipids, circulating mRNA, and miRNA, could potentially be detected using advanced techniques such as next-generation sequencing and mass spectroscopy. Therefore, plasma analysis is an attractive approach with which to diagnose and treat brain injuries. Subacute changes in plasma microRNA (miRNA) and lipid composition for sphingolipids were evaluated in a murine model of mild-to-moderate bTBI using next-generation sequencing and mass spectroscopy respectively. Animals were exposed at 17, 17 × 3, and 20 psi blast intensities using a calibrated blast simulator. Plasma lipid profiling demonstrated decreased C18 fatty acid chains of sphingomyelins and increased ceramide levels when compared with controls. Plasma levels of brain-enriched miRNA, miR-127 were increased in all groups while let-7a, b, and g were reduced in the 17 × 3 and 20 psi groups, but let 7d was increased in the 17 psi group. The majority of the miRs and lipids are highly conserved across different species, making them attractive to explore and potentially employ as diagnostic markers. It is tempting to speculate that sphingolipids, miR-128, and the let-7 family could predict mTBI, while a combination of miR-484, miR-122, miR-148a, miR-130a, and miR-223 could be used to predict the overall status of injury following blast injury.
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Affiliation(s)
- Venkata Siva Sai Sujith Sajja
- 1 Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, Johns Hopkins University , Baltimore, Maryland.,3 Johns Hopkins Military & Veterans Health Institute , Baltimore, Maryland.,4 Blast-Induced Neurotrauma Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research , Silver Spring, Maryland
| | - Anna Jablonska
- 1 Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Norman Haughey
- 5 Department of Neurology and Neurosurgery, Richard T. Johnson Division of Neuroimmunology and Neurological Infections, Johns Hopkins University School of Medicine , Baltimore, Maryland.,6 Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Jeff W M Bulte
- 1 Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, Johns Hopkins University , Baltimore, Maryland
| | - Robert D Stevens
- 1 Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, Johns Hopkins University , Baltimore, Maryland.,5 Department of Neurology and Neurosurgery, Richard T. Johnson Division of Neuroimmunology and Neurological Infections, Johns Hopkins University School of Medicine , Baltimore, Maryland.,7 Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine , Baltimore, Maryland
| | - Joseph B Long
- 4 Blast-Induced Neurotrauma Branch, Center for Military Psychiatry and Neuroscience, Walter Reed Army Institute of Research , Silver Spring, Maryland
| | - Piotr Walczak
- 1 Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, Johns Hopkins University , Baltimore, Maryland.,8 Department of Radiology, Faculty of Medical Sciences, University of Warmia and Mazury , Olsztyn, Poland
| | - Miroslaw Janowski
- 1 Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine , Baltimore, Maryland.,2 Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, Johns Hopkins University , Baltimore, Maryland.,9 NeuroRepair Department, Mossakowski Medical Research Centre , Polish Academy of Sciences, Warsaw, Poland
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25
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Yan Y, Deng X, Ning X, Li F, Cao J. Pathogenic mechanism of miR-21 in autoimmune lymphoid hyperplasia syndrome. Oncol Lett 2017; 13:4734-4740. [PMID: 28588726 PMCID: PMC5452897 DOI: 10.3892/ol.2017.6039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 01/19/2017] [Indexed: 11/30/2022] Open
Abstract
miR-21 plays an important role in immune responses and inflammatory diseases, but the mechanism of action of miR-21 in autoimmune lymphoid hyperplasia syndrome still remains unclear. The aim of the present study was to assess the mechanism of miR-21 in autoimmune disease, particularly, the autoimmune lymphoid hyperplasia syndrome. The pathology and immunity-related phenotypes of miR-21 transgenic mice, and the lymphocyte subsets were analyzed. The related T cell subsets and germinal center B (GCB) cells generated at the germinal center were detected with flow cytometry. The target genes of miR-21 were evaluated with the luciferase reporter gene method. The homeostatic proliferation of the lymphocytes was detected with the EdU incorporation assay. Inflammatory infiltration occurred to the lung and liver of the transgenic mice at 8 weeks. The frequency of the regulatory helper T cells decreased slightly. Significantly increased double negative T cells were observed in the spleen of the transgenic mice (P<0.05). The immunoglobulins IgG1, IgG2a, IgG2b, and IgG3 in the serum of the transgenic mice aged 8 weeks were significantly higher than those in the wild-type mice aged 8 weeks (P<0.05). The percentages of the GCB cells in the peripheral lymphoid organs such as lymph nodes, mesenteric lymph nodes, PP and spleen in the transgenic mice aged 8–52 weeks increased significantly (P<0.05). The percentage (26.32%) of the newly-formed GCB cells derived from transgenic mice was significantly higher than that (3.87%) of the GCB cells derived from the wild-type mice. miR-21 played a role of negative feedback regulation by inhibiting the NF-κB signal pathway. The highly-expressed miR-21 B cells promoted homeostatic proliferation of the T cells. miR-21 can promote homeostatic proliferation of lymphocytes by inhibiting the NF-κB signal pathway.
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Affiliation(s)
- Yonglong Yan
- Department of Rheumatology, Hebei Province General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Xinna Deng
- Department of Medical Oncology, Hebei Province General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Xiaoran Ning
- Department of Rheumatology, Hebei Province General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Fang Li
- Department of Rheumatology, Hebei Province General Hospital, Shijiazhuang, Hebei 050051, P.R. China
| | - Jingjing Cao
- Department of Rheumatology, Hebei Province General Hospital, Shijiazhuang, Hebei 050051, P.R. China
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26
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Zhang J, Zhang ZG, Lu M, Wang X, Shang X, Elias SB, Chopp M. MiR-146a promotes remyelination in a cuprizone model of demyelinating injury. Neuroscience 2017; 348:252-263. [PMID: 28237816 DOI: 10.1016/j.neuroscience.2017.02.029] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 12/30/2022]
Abstract
The death of mature oligodendrocytes (OLs) which are the sole myelinating cells of the central nervous system (CNS), leads to demyelination and functional deficits. Currently, there is lack of effective remyelination therapies for patients with demyelinating diseases. MicroRNAs (miRNAs) mediate OL function. We hypothesized that miR-146a, by inactivating interleukin-1 receptor-associated kinase 1 (IRAK1), promotes differentiation of oligodendrocyte progenitor cells (OPCs) and thereby enhances remyelination. To test this hypothesis, a demyelination model induced by a cuprizone (CPZ) diet was employed, in which C57BL/6J mice were fed with a CPZ diet for 5weeks. After termination of CPZ diet, the mice were randomly treated with continuous infusion of miR-146a mimics or mimic controls into the corpus callosum for 7days. Compared to the mimic control, infusion of miR-146a mimics facilitated remyelination assessed by increased myelin basic proteins in the corpus callosum, which was associated with augmentation of newly generated mature OLs. Infusion of miR-146a mimics also substantially elevated miR-146a levels in the corpus callosum and fluorescently tagged miR-146a mimics were mainly detected in OPCs. Western blot and double immmunofluorescent staining analysis showed that the miR-146a treatment considerably reduced IRAK1 protein levels and the number of IRAK1-positive cells, respectively. Collectively, these data indicate that exogenous miR-146a enhances remyelination, possibly by promoting OPCs to differentiate into myelinated OLs via targeting IRAK1.
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Affiliation(s)
- Jing Zhang
- Department of Neurology, Henry Ford Health System, Detroit, MI 48202, United States.
| | - Zheng Gang Zhang
- Department of Neurology, Henry Ford Health System, Detroit, MI 48202, United States
| | - Mei Lu
- Biostatistics and Research Epidemiology, Henry Ford Health System, Detroit, MI 48202, United States
| | - Xinli Wang
- Department of Neurology, Henry Ford Health System, Detroit, MI 48202, United States
| | - Xia Shang
- Department of Neurology, Henry Ford Health System, Detroit, MI 48202, United States
| | - Stanton B Elias
- Department of Neurology, Henry Ford Health System, Detroit, MI 48202, United States
| | - Michael Chopp
- Department of Neurology, Henry Ford Health System, Detroit, MI 48202, United States; Department of Physics, Oakland University, Rochester, MI 48309, United States
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Qiang J, Tao F, He J, Sun L, Xu P, Bao W. Effects of exposure to Streptococcus iniae on microRNA expression in the head kidney of genetically improved farmed tilapia (Oreochromis niloticus). BMC Genomics 2017; 18:190. [PMID: 28219342 PMCID: PMC5322787 DOI: 10.1186/s12864-017-3591-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 02/14/2017] [Indexed: 12/20/2022] Open
Abstract
Background Genetically improved farmed tilapia (GIFT, Oreochromis niloticus) are susceptible to infection by Streptococcus iniae when maintained in modern intensive culture systems. GIFT are commercially important fishes that are cultured widely in southern China. The role of microRNAs (miRNAs) in the regulatory response of GIFT to S. iniae infection has been underestimated and has not yet been well studied. Head kidney has an important immune function in teleost fishes. The main aim of this study was to determine the possible function of miRNAs in head kidney of S. iniae-infected GIFT. MiRNAs are small, non-coding RNAs that regulate gene expression by binding to the 3’-untranslated regions of their target mRNAs. MiRNAs are known to regulate immune-regulated signaling and inflammatory response pathways. Results High-throughput deep sequencing of two libraries (control group [CO] and infected group [IN]) of RNA extracted from GIFT head kidney tissues generated 12,089,630 (CO) and 12,624,975 (IN) clean reads. Bioinformatics analysis identified 1736 and 1729 conserved miRNAs and 164 and 165 novel miRNAs in the CO and IN libraries, respectively. Three miRNAs (miR-310-3p, miR-92, and miR-127) were found to be up-regulated and four miRNAs (miR-92d-3p, miR-375-5p, miR-146-3p, and miR-694) were found to be down-regulated in the S. iniae-infected GIFT. The expressions of these miRNAs were verified by quantitative real-time PCR. RNAhybrid and TargetScan were used to identify complementary miRNA and mRNA target sites, and the Gene Ontology and Kyoto Encyclopedia of Genes and Genomes databases were used to annotate and predict potential downstream regulation of biological pathways. Seven target genes, which encode immune-related proteins (complement C3, cytidine deaminase, regulator of G-protein Rgs22, mitogen-activated protein kinase Mapk1, metabotropic glutamate receptorm GluR8, calcium-sensing receptor CaSR, and microtubule-associated protein Map1S) were predicted to play crucial roles in the GIFT response to S. iniae infection. Conclusions S. iniae outbreaks have hindered the development of the tilapia industry in China. Understanding the miRNA transcriptome of S. iniae-infected GIFT is important for exploring the immune responses regulated by miRNAs as well as for studying novel regulated networks to prevent and treat S. iniae infections in the future. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3591-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jun Qiang
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, 9 Shanshui East Road, Wuxi, Jiangsu, 214081, China.
| | - Fanyi Tao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, 9 Shanshui East Road, Wuxi, Jiangsu, 214081, China
| | - Jie He
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, 9 Shanshui East Road, Wuxi, Jiangsu, 214081, China
| | - Lanyi Sun
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, 9 Shanshui East Road, Wuxi, Jiangsu, 214081, China
| | - Pao Xu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, 9 Shanshui East Road, Wuxi, Jiangsu, 214081, China.
| | - Wenjin Bao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, 9 Shanshui East Road, Wuxi, Jiangsu, 214081, China
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28
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Harrison EB, Hochfelder CG, Lamberty BG, Meays BM, Morsey BM, Kelso ML, Fox HS, Yelamanchili SV. Traumatic brain injury increases levels of miR-21 in extracellular vesicles: implications for neuroinflammation. FEBS Open Bio 2016; 6:835-46. [PMID: 27516962 PMCID: PMC4971839 DOI: 10.1002/2211-5463.12092] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/19/2016] [Accepted: 05/26/2016] [Indexed: 01/05/2023] Open
Abstract
Traumatic brain injury (TBI) is an important health concern and effective treatment strategies remain elusive. Understanding the complex multicellular response to TBI may provide new avenues for intervention. In the context of TBI, cell–cell communication is critical. One relatively unexplored form of cell–cell communication in TBI is extracellular vesicles (EVs). These membrane‐bound vesicles can carry many different types of cargo between cells. Recently, miRNA in EVs have been shown to mediate neuroinflammation and neuronal injury. To explore the role of EV‐associated miRNA in TBI, we isolated EVs from the brain of injured mice and controls, purified RNA from brain EVs, and performed miRNA sequencing. We found that the expression of miR‐212 decreased, while miR‐21, miR‐146, miR‐7a, and miR‐7b were significantly increased with injury, with miR‐21 showing the largest change between conditions. The expression of miR‐21 in the brain was primarily localized to neurons near the lesion site. Interestingly, adjacent to these miR‐21‐expressing neurons were activated microglia. The concurrent increase in miR‐21 in EVs with the elevation of miR‐21 in neurons, suggests that miR‐21 is secreted from neurons as potential EV cargo. Thus, this study reveals a new potential mechanism of cell–cell communication not previously described in TBI.
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Affiliation(s)
- Emily B Harrison
- Department of Pharmacology and Experimental Neuroscience University of Nebraska Medical Center Omaha NE USA
| | - Colleen G Hochfelder
- Department of Pharmacology and Experimental Neuroscience University of Nebraska Medical Center Omaha NE USA; Present address: Albert Einstein College of Medicine 1300 Morris Park Ave Bronx NY 10461 USA
| | - Benjamin G Lamberty
- Department of Pharmacology and Experimental Neuroscience University of Nebraska Medical Center Omaha NE USA
| | - Brittney M Meays
- Department of Pharmacology and Experimental Neuroscience University of Nebraska Medical Center Omaha NE USA
| | - Brenda M Morsey
- Department of Pharmacology and Experimental Neuroscience University of Nebraska Medical Center Omaha NE USA
| | - Matthew L Kelso
- Department of Cellular and Integrative Physiology University of Nebraska Medical Center Omaha NE USA; Present address: Medpace Reference Laboratories 5365 Medpace Way Cincinnati OH USA
| | - Howard S Fox
- Department of Pharmacology and Experimental Neuroscience University of Nebraska Medical Center Omaha NE USA
| | - Sowmya V Yelamanchili
- Department of Pharmacology and Experimental Neuroscience University of Nebraska Medical Center Omaha NE USA
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Jagot F, Davoust N. Is It worth Considering Circulating microRNAs in Multiple Sclerosis? Front Immunol 2016; 7:129. [PMID: 27092141 PMCID: PMC4821089 DOI: 10.3389/fimmu.2016.00129] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 03/21/2016] [Indexed: 12/21/2022] Open
Abstract
New evidence has highlighted that miRNA production and trafficking can be dysregulated in both autoimmmune and neurological disorders. Multiple sclerosis (MS) in particular is an autoimmune pathology leading to neurodegeneration. Profiling studies performed on cells derived from MS patients have described a dysregulated network of miRNAs in both immune and neural cells. Interestingly, new evidence has emerged showing that circulating miRNAs are also dysregulated in MS body fluids, including plasma/serum and cerebrospinal fluid. This review summarizes the current scientific theories on the function of this altered circulating miRNA network. It builds up new insights about miRNA transfer mechanisms including extracellular vesicle trafficking involved in cell-to-cell communication and the possible physiopathological functions of these transfers in MS. Finally, this review proposes that monitoring altered miRNA expression levels could serve as a potential biomarker read-out of MS subtype and severity.
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Affiliation(s)
- Ferdinand Jagot
- Biology Department, Ecole Normale Supérieure de Lyon, Université de Lyon , Lyon , France
| | - Nathalie Davoust
- Laboratory of Molecular Biology of the Cell, UMR5239 CNRS/Ecole Normale Supérieure de Lyon, UMS 344 Biosciences Lyon Gerland, Université de Lyon , Lyon , France
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30
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Yuhong J, Leilei T, Fuyun Z, Hongyang J, Xiaowen L, Liying Y, Lei Z, Jingrong M, Jinpeng Y. Identification and characterization of immune-related microRNAs in blunt snout bream, Megalobrama amblycephala. FISH & SHELLFISH IMMUNOLOGY 2016; 49:470-492. [PMID: 26773859 DOI: 10.1016/j.fsi.2015.12.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/03/2015] [Accepted: 12/11/2015] [Indexed: 06/05/2023]
Abstract
MicroRNAs (miRNAs) play vital roles in diverse biological processes, including in immune response. Blunt snout bream (Megalobrama amblycephala) is a prevalent and important commercial endemic freshwater fish species in China's intensive polyculture systems. To identify immune-related miRNAs of M. amblycephala, two small RNA (sRNA) libraries from immune tissues with or without lipopolysaccharide (LPS) stimulation were constructed and sequenced using the high-throughput sequencing technology. Totally, 16,425,543 and 15,076,813 raw reads, corresponding to 14,156,755 and 13,445,869 clean reads, were obtained in the normal and infected libraries, respectively. A total of 324 miRNAs, including 218 known miRNAs and 106 putative novel miRNAs were identified by bioinformatic analysis. We analyzed differentially expressed miRNAs between two libraries using pairwise comparison. 113 (34.88%) miRNAs were found to be significantly differentially expressed between two libraries, with 63 (55.75%) exhibiting elevated expression in LPS stimulation sample. Thereinto, a number of known miRNAs were identified immune-related. Real-time quantitative PCR (RT-qPCR) were implemented for 12 miRNAs of two samples, and agreement was confirmed between the sequencing and RT-qPCR data. Target genes likely regulated by these differentially expressed miRNAs were predicted using computational prediction. The functional annotation of target genes by Gene Ontology enrichment (GO) and Kyoto Encyclopedia of Genes and Genomes pathway analysis (KEGG) indicated that a majority of differential miRNAs might involved in immune response. To our knowledge, this is the first comprehensive study of miRNAs in response to LPS stimulation in M. amblycephala, even in fish. These results deepened our understanding of the role of miRNAs in the intricate host's immune system, and should be useful to develop new control strategies for host immune defense against various bacterial invasions in M. amblycephala.
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Affiliation(s)
- Jiang Yuhong
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha 410017, China
| | - Tang Leilei
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha 410017, China
| | - Zhang Fuyun
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha 410017, China
| | - Jiang Hongyang
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha 410017, China
| | - Liu Xiaowen
- Xiangya School of Medcine, Central South University, Changsha 410017, China
| | - Yang Liying
- Xiangya School of Medcine, Central South University, Changsha 410017, China
| | - Zhang Lei
- Xiangya School of Medcine, Central South University, Changsha 410017, China
| | - Mao Jingrong
- Xiangya School of Medcine, Central South University, Changsha 410017, China
| | - Yan Jinpeng
- Department of Cell Biology, School of Life Sciences, Central South University, Changsha 410017, China.
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31
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Baulina NM, Kulakova OG, Favorova OO. MicroRNAs: The Role in Autoimmune Inflammation. Acta Naturae 2016; 8:21-33. [PMID: 27099782 PMCID: PMC4837569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNA molecules that regulate gene expression at the post-transcriptional level through base-pairing predominantly with a 3'-untranslated region of target mRNA, followed by mRNA degradation or translational repression. Totally, miRNAs change, through a complex regulatory network, the expression of more than 60% of human genes. MiRNAs are key regulators of the immune response that affect maturation, proliferation, differentiation, and activation of immune cells, as well as antibody secretion and release of inflammatory mediators. Disruption of this regulation may lead to the development of various pathological conditions, including autoimmune inflammation. This review summarizes the data on biogenesis and the mechanisms of miRNA action. We discuss the role of miRNAs in the development and the action of the immune system, as well as in the development of an autoimmune inflammatory response. Special attention is given to the role of miRNAs in the autoimmune inflammation in multiple sclerosis, which is a serious socially significant disease of the central nervous system. Currently, a lot of research is focused on this problem.
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Affiliation(s)
- N. M. Baulina
- Pirogov Russian National Research Medical University, Ostrovityanova St., 1, Moscow, 117997, Russia
- Russian Cardiology Research and Production Complex, 3-rd Cherepkovskay St., 15a, Moscow, 121552 , Russia
| | - O. G. Kulakova
- Pirogov Russian National Research Medical University, Ostrovityanova St., 1, Moscow, 117997, Russia
- Russian Cardiology Research and Production Complex, 3-rd Cherepkovskay St., 15a, Moscow, 121552 , Russia
| | - O. O. Favorova
- Pirogov Russian National Research Medical University, Ostrovityanova St., 1, Moscow, 117997, Russia
- Russian Cardiology Research and Production Complex, 3-rd Cherepkovskay St., 15a, Moscow, 121552 , Russia
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Integrated analyses of zebrafish miRNA and mRNA expression profiles identify miR-29b and miR-223 as potential regulators of optic nerve regeneration. BMC Genomics 2015; 16:591. [PMID: 26265132 PMCID: PMC4534052 DOI: 10.1186/s12864-015-1772-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 07/14/2015] [Indexed: 12/27/2022] Open
Abstract
Background Unlike mammals, zebrafish have the ability to regenerate damaged parts of their central nervous system (CNS) and regain functionality of the affected area. A better understanding of the molecular mechanisms involved in zebrafish regeneration may therefore provide insight into how CNS repair might be induced in mammals. Although many studies have described differences in gene expression in zebrafish during CNS regeneration, the regulatory mechanisms underpinning the differential expression of these genes have not been examined. Results We used microarrays to analyse and integrate the mRNA and microRNA (miRNA) expression profiles of zebrafish retina after optic nerve crush to identify potential regulatory mechanisms that underpin central nerve regeneration. Bioinformatic analysis identified 3 miRNAs and 657 mRNAs that were differentially expressed after injury. We then combined inverse correlations between our miRNA expression and mRNA expression, and integrated these findings with target predictions from TargetScan Fish to identify putative miRNA-gene target pairs. We focused on two over-expressed miRNAs (miR-29b and miR-223), and functionally validated seven of their predicted gene targets using RT-qPCR and luciferase assays to confirm miRNA-mRNA binding. Gene ontology analysis placed the miRNA-regulated genes (eva1a, layna, nefmb, ina, si:ch211-51a6.2, smoc1, sb:cb252) in key biological processes that included cell survival/apoptosis, ECM-cytoskeleton signaling, and heparan sulfate proteoglycan binding, Conclusion Our results suggest a key role for miR-29b and miR-223 in zebrafish regeneration. The identification of miRNA regulation in a zebrafish injury model provides a framework for future studies in which to investigate not only the cellular processes required for CNS regeneration, but also how these mechanisms might be regulated to promote successful repair and return of function in the injured mammalian brain. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1772-1) contains supplementary material, which is available to authorized users.
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Xu X, Shen Y, Fu J, Lu L, Li J. Next-generation sequencing identified microRNAs that associate with motile aeromonad septicemia in grass carp. FISH & SHELLFISH IMMUNOLOGY 2015; 45:94-103. [PMID: 25698074 DOI: 10.1016/j.fsi.2015.02.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 02/04/2015] [Accepted: 02/06/2015] [Indexed: 06/04/2023]
Abstract
MicroRNAs (miRNAs) modulate many biological processes and can be up-or down-regulated in a variety of diseases states, including in bacterial infection. In this study, we characterized miRNAs associated with susceptibility or resistance to motile Aeromonas hydrophila in grass carp (Ctenopharyngodon idella), a commercially important farmed fish species in China. Using Illumina next-generation sequencing, we detected 185 miRNAs in A. hydrophila-susceptible (SGC) and -resistant grass carp (RGC) during immune activation. Twenty-one miRNAs were found to be differentially expressed between SGC and RGC, with 23.8% (5 out 21) exhibiting elevated expression in SGC. Further investigation of a selected five miRNAs indicated differences in the timing and tissue sources of expression. Target genes likely regulated by these miRNAs were identified using computational prediction combined with transcriptome expression data. MiRNA targets of differentially expressed mRNAs included those with functions important for bacterial resistance, such as tlr4 and nfil3-6. In addition, we demonstrated that nfil3-6 and tlr4 genes are direct targets of let-7i and cid-miRn-118. The present study suggested that the multiple miRNAs, displaying diverse kinetics and tissue sources on antibacterial immune processes.
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Affiliation(s)
- Xiaoyan Xu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, PR China
| | - Yubang Shen
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, PR China
| | - Jianjun Fu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, PR China
| | - Liqun Lu
- National Pathogen Collection Center for Aquatic Animals, College of Fisheries and Life Science, Shanghai Ocean University, 999 Huchenghuan Road, 201306 Shanghai, PR China
| | - Jiale Li
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, PR China; E-Institute of Shanghai Universities, Shanghai Ocean University, 999 Huchenghuan Road, 201306 Shanghai, PR China.
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Ruhrmann S, Stridh P, Kular L, Jagodic M. Genomic imprinting: A missing piece of the Multiple Sclerosis puzzle? Int J Biochem Cell Biol 2015; 67:49-57. [PMID: 26002250 DOI: 10.1016/j.biocel.2015.05.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 05/10/2015] [Accepted: 05/11/2015] [Indexed: 12/14/2022]
Abstract
Evidence for parent-of-origin effects in complex diseases such as Multiple Sclerosis (MS) strongly suggests a role for epigenetic mechanisms in their pathogenesis. In this review, we describe the importance of accounting for parent-of-origin when identifying new risk variants for complex diseases and discuss how genomic imprinting, one of the best-characterized epigenetic mechanisms causing parent-of-origin effects, may impact etiology of complex diseases. While the role of imprinted genes in growth and development is well established, the contribution and molecular mechanisms underlying the impact of genomic imprinting in immune functions and inflammatory diseases are still largely unknown. Here we discuss emerging roles of imprinted genes in the regulation of inflammatory responses with a particular focus on the Dlk1 cluster that has been implicated in etiology of experimental MS-like disease and Type 1 Diabetes. Moreover, we speculate on the potential wider impact of imprinting via the action of imprinted microRNAs, which are abundantly present in the Dlk1 locus and predicted to fine-tune important immune functions. Finally, we reflect on how unrelated imprinted genes or imprinted genes together with non-imprinted genes can interact in so-called imprinted gene networks (IGN) and suggest that IGNs could partly explain observed parent-of-origin effects in complex diseases. Unveiling the mechanisms of parent-of-origin effects is therefore likely to teach us not only about the etiology of complex diseases but also about the unknown roles of this fascinating phenomenon underlying uneven genetic contribution from our parents. This article is part of a Directed Issue entitled: Epigenetics dynamics in development and disease.
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Affiliation(s)
- Sabrina Ruhrmann
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Pernilla Stridh
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Lara Kular
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Maja Jagodic
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.
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Mele F, Basso C, Leoni C, Aschenbrenner D, Becattini S, Latorre D, Lanzavecchia A, Sallusto F, Monticelli S. ERK phosphorylation and miR-181a expression modulate activation of human memory TH17 cells. Nat Commun 2015; 6:6431. [DOI: 10.1038/ncomms7431] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Accepted: 01/28/2015] [Indexed: 12/19/2022] Open
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