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Bahram Sangani N, Gomes AR, Curfs LMG, Reutelingsperger CP. The role of Extracellular Vesicles during CNS development. Prog Neurobiol 2021; 205:102124. [PMID: 34314775 DOI: 10.1016/j.pneurobio.2021.102124] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 04/16/2021] [Accepted: 07/20/2021] [Indexed: 12/21/2022]
Abstract
With a diverse set of neuronal and glial cell populations, Central Nervous System (CNS) has one of the most complex structures in the body. Intercellular communication is therefore highly important to coordinate cell-to-cell interactions. Besides electrical and chemical messengers, CNS cells also benefit from another communication route, what is known as extracellular vesicles, to harmonize their interactions. Extracellular Vesicles (EVs) and their subtype exosomes are membranous particles secreted by cells and contain information packaged in the form of biomolecules such as small fragments of DNA, lipids, miRNAs, mRNAs, and proteins. They are able to efficiently drive changes upon their arrival to recipient cells. EVs actively participate in all stages of CNS development by stimulating neural cell proliferation, differentiation, synaptic formation, and mediating reciprocal interactions between neurons and oligodendrocyte for myelination process. The aim of the present review is to enlighten the presence and contribution of EVs at each CNS developmental milestone.
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Affiliation(s)
- Nasim Bahram Sangani
- Department of Biochemistry, Maastricht University, Cardiovascular Research Institute Maastricht, Maastricht, the Netherlands; GKC-Rett Expertise Centre, Maastricht University Medical Centre, Maastricht, the Netherlands.
| | - Ana Rita Gomes
- Department of Bioengineering and IBB - Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal; Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Portugal.
| | - Leopold M G Curfs
- GKC-Rett Expertise Centre, Maastricht University Medical Centre, Maastricht, the Netherlands.
| | - Chris P Reutelingsperger
- Department of Biochemistry, Maastricht University, Cardiovascular Research Institute Maastricht, Maastricht, the Netherlands; GKC-Rett Expertise Centre, Maastricht University Medical Centre, Maastricht, the Netherlands.
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Kalafatakis I, Karagogeos D. Oligodendrocytes and Microglia: Key Players in Myelin Development, Damage and Repair. Biomolecules 2021; 11:1058. [PMID: 34356682 PMCID: PMC8301746 DOI: 10.3390/biom11071058] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/16/2021] [Accepted: 07/16/2021] [Indexed: 12/13/2022] Open
Abstract
Oligodendrocytes, the myelin-making cells of the CNS, regulate the complex process of myelination under physiological and pathological conditions, significantly aided by other glial cell types such as microglia, the brain-resident, macrophage-like innate immune cells. In this review, we summarize how oligodendrocytes orchestrate myelination, and especially myelin repair after damage, and present novel aspects of oligodendroglial functions. We emphasize the contribution of microglia in the generation and regeneration of myelin by discussing their beneficial and detrimental roles, especially in remyelination, underlining the cellular and molecular components involved. Finally, we present recent findings towards human stem cell-derived preclinical models for the study of microglia in human pathologies and on the role of microbiome on glial cell functions.
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Affiliation(s)
- Ilias Kalafatakis
- Laboratory of Neuroscience, Department of Basic Science, University of Crete Medical School, 70013 Heraklion, Greece;
- IMBB FORTH, Nikolaou Plastira 100, Vassilika Vouton, 70013 Heraklion, Greece
| | - Domna Karagogeos
- Laboratory of Neuroscience, Department of Basic Science, University of Crete Medical School, 70013 Heraklion, Greece;
- IMBB FORTH, Nikolaou Plastira 100, Vassilika Vouton, 70013 Heraklion, Greece
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Extracellular Vesicles in Multiple Sclerosis: Role in the Pathogenesis and Potential Usefulness as Biomarkers and Therapeutic Tools. Cells 2021; 10:cells10071733. [PMID: 34359903 PMCID: PMC8303489 DOI: 10.3390/cells10071733] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 12/15/2022] Open
Abstract
Although extracellular vesicles (EVs) were initially relegated to a waste disposal role, nowadays, they have gained multiple fundamental functions working as messengers in intercellular communication as well as exerting active roles in physiological and pathological processes. Accumulating evidence proves the involvement of EVs in many diseases, including those of the central nervous system (CNS), such as multiple sclerosis (MS). Indeed, these membrane-bound particles, produced in any type of cell, carry and release a vast range of bioactive molecules (nucleic acids, proteins, and lipids), conferring genotypic and phenotypic changes to the recipient cell. This means that not only EVs per se but their content, especially, could reveal new candidate disease biomarkers and/or therapeutic agents. This review is intended to provide an overview regarding current knowledge about EVs’ involvement in MS, analyzing the potential versatility of EVs as a new therapeutic tool and source of biomarkers.
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Mahjoum S, Rufino-Ramos D, Pereira de Almeida L, Broekman MLD, Breakefield XO, van Solinge TS. Living Proof of Activity of Extracellular Vesicles in the Central Nervous System. Int J Mol Sci 2021; 22:ijms22147294. [PMID: 34298912 PMCID: PMC8303915 DOI: 10.3390/ijms22147294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 07/01/2021] [Accepted: 07/03/2021] [Indexed: 12/27/2022] Open
Abstract
The central nervous system (CNS) consists of a heterogeneous population of cells with highly specialized functions. For optimal functioning of the CNS, in disease and in health, intricate communication between these cells is vital. One important mechanism of cellular communication is the release and uptake of extracellular vesicles (EVs). EVs are membrane enclosed particles actively released by cells, containing a wide array of proteins, lipids, RNA, and DNA. These EVs can be taken up by neighboring or distant cells, and influence a wide range of processes. Due to the complexity and relative inaccessibility of the CNS, our current understanding of the role of EVs is mainly derived in vitro work. However, recently new methods and techniques have opened the ability to study the role of EVs in the CNS in vivo. In this review, we discuss the current developments in our understanding of the role of EVs in the CNS in vivo.
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Affiliation(s)
- Shadi Mahjoum
- Program in Neuroscience, Departments of Neurology and Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02119, USA; (S.M.); (M.L.D.B.); (X.O.B.)
| | - David Rufino-Ramos
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal; (D.R.-R.); (L.P.d.A.)
- CIBB—Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Faculty of Pharmacy, University of Coimbra, Polo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Luís Pereira de Almeida
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal; (D.R.-R.); (L.P.d.A.)
- CIBB—Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Faculty of Pharmacy, University of Coimbra, Polo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Marike L. D. Broekman
- Program in Neuroscience, Departments of Neurology and Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02119, USA; (S.M.); (M.L.D.B.); (X.O.B.)
- Department of Neurosurgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Department of Neurosurgery, Haaglanden Medical Center, 2512 VA The Hague, The Netherlands
| | - Xandra O. Breakefield
- Program in Neuroscience, Departments of Neurology and Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02119, USA; (S.M.); (M.L.D.B.); (X.O.B.)
| | - Thomas S. van Solinge
- Program in Neuroscience, Departments of Neurology and Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02119, USA; (S.M.); (M.L.D.B.); (X.O.B.)
- Department of Neurosurgery, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Correspondence:
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55
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Kim KY, Shin KY, Chang KA. Brain-Derived Exosomal Proteins as Effective Biomarkers for Alzheimer's Disease: A Systematic Review and Meta-Analysis. Biomolecules 2021; 11:biom11070980. [PMID: 34356604 PMCID: PMC8301985 DOI: 10.3390/biom11070980] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/16/2021] [Accepted: 06/29/2021] [Indexed: 02/06/2023] Open
Abstract
Alzheimer's disease (AD), a progressive neurodegenerative disease, affects approximately 50 million people worldwide, which warrants the search for reliable new biomarkers for early diagnosis of AD. Brain-derived exosomal (BDE) proteins, which are extracellular nanovesicles released by all cell lineages of the central nervous system, have been focused as biomarkers for diagnosis, screening, prognosis prediction, and monitoring in AD. This review focused on the possibility of BDE proteins as AD biomarkers. The articles published prior to 26 January 2021 were searched in PubMed, EMBASE, Web of Science, and Cochrane Library to identify all relevant studies that reported exosome biomarkers in blood samples of patients with AD. From 342 articles, 20 studies were selected for analysis. We conducted a meta-analysis of six BDE proteins and found that levels of amyloid-β42 (standardized mean difference (SMD) = 1.534, 95% confidence interval [CI]: 0.595-2.474), total-tau (SMD = 1.224, 95% CI: 0.534-1.915), tau phosphorylated at threonine 181 (SMD = 4.038, 95% CI: 2.312-5.764), and tau phosphorylated at serine 396 (SMD = 2.511, 95% CI: 0.795-4.227) were significantly different in patients with AD compared to those in control. Whereas, those of p-tyrosine-insulin receptor substrate-1 and heat shock protein 70 did not show significant differences. This review suggested that Aβ42, t-tau, p-T181-tau, and p-S396-tau could be effective in diagnosing AD as blood biomarkers, despite the limitation in the meta-analysis based on the availability of data. Therefore, certain BDE proteins could be used as effective biomarkers for AD.
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Affiliation(s)
- Ka Young Kim
- Department of Nursing, College of Nursing, Gachon University, Incheon 21936, Korea;
- Neuroscience Research Institute, Gachon University, Incheon 21565, Korea
| | - Ki Young Shin
- Bio-MAX Institute, Seoul National University, Seoul 08826, Korea
- Correspondence: (K.Y.S.); (K.-AC.); Tel.: +82-2-880-1737 (K.Y.S.); +82-32-899-6411 (K.-AC.)
| | - Keun-A Chang
- Neuroscience Research Institute, Gachon University, Incheon 21565, Korea
- Department of Pharmacology, College of Medicine, Gachon University, Incheon 21936, Korea
- Neuroscience of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology (GAIHST), Gachon University, Incheon 21936, Korea
- Correspondence: (K.Y.S.); (K.-AC.); Tel.: +82-2-880-1737 (K.Y.S.); +82-32-899-6411 (K.-AC.)
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Gratpain V, Mwema A, Labrak Y, Muccioli GG, van Pesch V, des Rieux A. Extracellular vesicles for the treatment of central nervous system diseases. Adv Drug Deliv Rev 2021; 174:535-552. [PMID: 33991589 DOI: 10.1016/j.addr.2021.05.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/14/2021] [Accepted: 05/11/2021] [Indexed: 02/07/2023]
Abstract
The interest in extracellular vesicles (EVs) increased during the last decade. It is now established that these vesicles play a role in the pathogenesis of central nervous system diseases (CNS), which explains why they are studied as biomarkers in these pathologies. On the other hand, EVs can also present therapeutic properties, often similar to their parent cells, as observed with mesenchymal stem cell-derived EVs. They can then be used as therapeutics, alone or combined with a bioactive molecule, for the treatment of CNS diseases, as they can cross the blood-brain barrier more easily than synthetic nanomedicines and are less immunogenic. A few clinical trials are currently on-going but there are still challenges to overcome for further clinical translation such as the scale-up of the production, the lack of standardization for isolation and characterization methods and the low encapsulation efficiency.
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Affiliation(s)
- Viridiane Gratpain
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Brussels, Belgium
| | - Ariane Mwema
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Brussels, Belgium; Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids, Université Catholique de Louvain, UCLouvain, 1200 Brussels, Belgium
| | - Yasmine Labrak
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Brussels, Belgium; Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids, Université Catholique de Louvain, UCLouvain, 1200 Brussels, Belgium
| | - Giulio G Muccioli
- Louvain Drug Research Institute, Bioanalysis and Pharmacology of Bioactive Lipids, Université Catholique de Louvain, UCLouvain, 1200 Brussels, Belgium
| | - Vincent van Pesch
- Institute of Neuroscience, Neurochemistry Unit, Université Catholique de Louvain, UCLouvain, 1200 Brussels, Belgium; Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - Anne des Rieux
- Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Université Catholique de Louvain, UCLouvain, 1200 Brussels, Belgium.
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57
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Zhang T, Ma S, Lv J, Wang X, Afewerky HK, Li H, Lu Y. The emerging role of exosomes in Alzheimer's disease. Ageing Res Rev 2021; 68:101321. [PMID: 33727157 DOI: 10.1016/j.arr.2021.101321] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/20/2021] [Accepted: 03/08/2021] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD), manifested by memory loss and a decline in cognitive functions, is the most prevalent neurodegenerative disease accounting for 60-80 % of dementia cases. But, to-date, there is no effective treatment available to slow or stop the progression of AD. Exosomes are small extracellular vesicles that carry constituents, such as functional messenger RNAs, non-coding RNAs, proteins, lipids, DNA, and other bioactive substances of their source cells. In the brain, exosomes are likely to be sourced by almost all cell types and involve in cell communication to regulate cellular functions. The yet, accumulated evidence on the roles of exosomes and their constituents in the AD pathological process suggests their significance as additional biomarkers and therapeutic targets for AD. This review summarizes the current reported research findings on exosomes roles in the pathogenesis, diagnosis, and treatment of AD.
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58
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Bongiovanni L, Andriessen A, Wauben MHM, Hoen ENMN', de Bruin A. Extracellular Vesicles: Novel Opportunities to Understand and Detect Neoplastic Diseases. Vet Pathol 2021; 58:453-471. [PMID: 33813952 PMCID: PMC8064535 DOI: 10.1177/0300985821999328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
With a size range from 30 to 1000 nm, extracellular vesicles (EVs) are one of the smallest cell components able to transport biologically active molecules. They mediate intercellular communications and play a fundamental role in the maintenance of tissue homeostasis and pathogenesis in several types of diseases. In particular, EVs actively contribute to cancer initiation and progression, and there is emerging understanding of their role in creation of the metastatic niche. This fact underlies the recent exponential growth in EV research, which has improved our understanding of their specific roles in disease and their potential applications in diagnosis and therapy. EVs and their biomolecular cargo reflect the state of the diseased donor cells, and can be detected in body fluids and exploited as biomarkers in cancer and other diseases. Relatively few studies have been published on EVs in the veterinary field. This review provides an overview of the features and biology of EVs as well as recent developments in EV research including techniques for isolation and analysis, and will address the way in which the EVs released by diseased tissues can be studied and exploited in the field of veterinary pathology. Uniquely, this review emphasizes the important contribution that pathologists can make to the field of EV research: pathologists can help EV scientists in studying and confirming the role of EVs and their molecular cargo in diseased tissues and as biomarkers in liquid biopsies.
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Affiliation(s)
- Laura Bongiovanni
- 90051Utrecht University, Utrecht, the Netherlands.,University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Present address: Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | | | | | | | - Alain de Bruin
- 90051Utrecht University, Utrecht, the Netherlands.,University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
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59
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Lizarraga-Valderrama LR, Sheridan GK. Extracellular vesicles and intercellular communication in the central nervous system. FEBS Lett 2021; 595:1391-1410. [PMID: 33728650 DOI: 10.1002/1873-3468.14074] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/07/2021] [Accepted: 03/08/2021] [Indexed: 12/30/2022]
Abstract
Neurons and glial cells of the central nervous system (CNS) release extracellular vesicles (EVs) to the interstitial fluid of the brain and spinal cord parenchyma. EVs contain proteins, nucleic acids and lipids that can be taken up by, and modulate the behaviour of, neighbouring recipient cells. The functions of EVs have been extensively studied in the context of neurodegenerative diseases. However, mechanisms involved in EV-mediated neuron-glial communication under physiological conditions or healthy ageing remain unclear. A better understanding of the myriad roles of EVs in CNS homeostasis is essential for the development of novel therapeutics to alleviate and reverse neurological disturbances of ageing. Proteomic studies are beginning to reveal cell type-specific EV cargo signatures that may one day allow us to target specific neuronal or glial cell populations in the treatment of debilitating neurological disorders. This review aims to synthesise the current literature regarding EV-mediated cell-cell communication in the brain, predominantly under physiological conditions.
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Affiliation(s)
| | - Graham K Sheridan
- School of Life Sciences, Queens Medical Centre, University of Nottingham, UK
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60
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Xiao L, Hareendran S, Loh YP. Function of exosomes in neurological disorders and brain tumors. EXTRACELLULAR VESICLES AND CIRCULATING NUCLEIC ACIDS 2021; 2:55-79. [PMID: 34368812 PMCID: PMC8341051 DOI: 10.20517/evcna.2021.04] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Exosomes are a subtype of extracellular vesicles released from different cell types including those in the nervous system, and are enriched in a variety of bioactive molecules such as RNAs, proteins and lipids. Numerous studies have indicated that exosomes play a critical role in many physiological and pathological activities by facilitating intercellular communication and modulating cells' responses to external environments. Particularly in the central nervous system, exosomes have been implicated to play a role in many neurological disorders such as abnormal neuronal development, neurodegenerative diseases, epilepsy, mental disorders, stroke, brain injury and brain cancer. Since exosomes recapitulate the characteristics of the parental cells and have the capacity to cross the blood-brain barrier, their cargo can serve as potential biomarkers for early diagnosis and clinical assessment of disease treatment. In this review, we describe the latest findings and current knowledge of the roles exosomes play in various neurological disorders and brain cancer, as well as their application as promising biomarkers. The potential use of exosomes to deliver therapeutic molecules to treat diseases of the central nervous system is also discussed.
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Affiliation(s)
- Lan Xiao
- Section on Cellular Neurobiology, Eunice Kennedy Shriver, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sangeetha Hareendran
- Section on Cellular Neurobiology, Eunice Kennedy Shriver, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Y Peng Loh
- Section on Cellular Neurobiology, Eunice Kennedy Shriver, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
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61
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Pistono C, Bister N, Stanová I, Malm T. Glia-Derived Extracellular Vesicles: Role in Central Nervous System Communication in Health and Disease. Front Cell Dev Biol 2021; 8:623771. [PMID: 33569385 PMCID: PMC7868382 DOI: 10.3389/fcell.2020.623771] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/23/2020] [Indexed: 12/24/2022] Open
Abstract
Glial cells are crucial for the maintenance of correct neuronal functionality in a physiological state and intervene to restore the equilibrium when environmental or pathological conditions challenge central nervous system homeostasis. The communication between glial cells and neurons is essential and extracellular vesicles (EVs) take part in this function by transporting a plethora of molecules with the capacity to influence the function of the recipient cells. EVs, including exosomes and microvesicles, are a heterogeneous group of biogenetically distinct double membrane-enclosed vesicles. Once released from the cell, these two types of vesicles are difficult to discern, thus we will call them with the general term of EVs. This review is focused on the EVs secreted by astrocytes, oligodendrocytes and microglia, aiming to shed light on their influence on neurons and on the overall homeostasis of the central nervous system functions. We collect evidence on neuroprotective and homeostatic effects of glial EVs, including neuronal plasticity. On the other hand, current knowledge of the detrimental effects of the EVs in pathological conditions is addressed. Finally, we propose directions for future studies and we evaluate the potential of EVs as a therapeutic treatment for neurological disorders.
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Affiliation(s)
- Cristiana Pistono
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Nea Bister
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Iveta Stanová
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Tarja Malm
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
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62
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Rastogi S, Sharma V, Bharti PS, Rani K, Modi GP, Nikolajeff F, Kumar S. The Evolving Landscape of Exosomes in Neurodegenerative Diseases: Exosomes Characteristics and a Promising Role in Early Diagnosis. Int J Mol Sci 2021; 22:E440. [PMID: 33406804 PMCID: PMC7795439 DOI: 10.3390/ijms22010440] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/23/2020] [Accepted: 12/30/2020] [Indexed: 12/13/2022] Open
Abstract
Neurodegenerative diseases (ND) remains to be one of the biggest burdens on healthcare systems and serves as a leading cause of disability and death. Alzheimer's disease (AD) is among the most common of such disorders, followed by Parkinson's disease (PD). The basic molecular details of disease initiation and pathology are still under research. Only recently, the role of exosomes has been linked to the initiation and progression of these neurodegenerative diseases. Exosomes are small bilipid layer enclosed extracellular vesicles, which were once considered as a cellular waste and functionless. These nano-vesicles of 30-150 nm in diameter carry specific proteins, lipids, functional mRNAs, and high amounts of non-coding RNAs (miRNAs, lncRNAs, and circRNAs). As the exosomes content is known to vary as per their originating and recipient cells, these vesicles can be utilized as a diagnostic biomarker for early disease detection. Here we review exosomes, their biogenesis, composition, and role in neurodegenerative diseases. We have also provided details for their characterization through an array of available techniques. Their updated role in neurodegenerative disease pathology is also discussed. Finally, we have shed light on a novel field of salivary exosomes as a potential candidate for early diagnosis in neurodegenerative diseases and compared the biomarkers of salivary exosomes with other blood/cerebrospinal fluid (CSF) based exosomes within these neurological ailments.
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Affiliation(s)
- Simran Rastogi
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India; (S.R.); (V.S.); (P.S.B.)
| | - Vaibhav Sharma
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India; (S.R.); (V.S.); (P.S.B.)
| | - Prahalad Singh Bharti
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India; (S.R.); (V.S.); (P.S.B.)
| | - Komal Rani
- Department of Biotechnology, Amity University, Mumbai 410206, India;
| | - Gyan P. Modi
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India;
| | - Fredrik Nikolajeff
- Department of Health Science, Lulea Technical University, 97187 Lulea, Sweden
| | - Saroj Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India; (S.R.); (V.S.); (P.S.B.)
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63
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Abstract
In the mammalian central nervous system, nerve-glia antigen 2 (NG2) glia are considered the fourth glial population in addition to astrocytes, oligodendrocytes and microglia. The fate of NG2 glia in vivo has been carefully studied in several transgenic mouse models using the Cre/loxP strategy. There is a clear agreement that NG2 glia mainly serve as progenitors for oligodendrocytes and a subpopulation of astrocytes mainly in the ventral forebrain, whereas the existence of a neurogenic potential of NG2 glia is lack of adequate evidence. This mini review summarizes the findings from recent studies regarding the fate of NG2 glia during development. We will highlight the age-and-region-dependent heterogeneity of the NG2 glia differentiation potential. We will also discuss putative reasons for inconsistent findings in various transgenic mouse lines of previous studies.
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Affiliation(s)
- Qilin Guo
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine (CIPMM), University of Saarland, Homburg, Germany
| | - Anja Scheller
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine (CIPMM), University of Saarland, Homburg, Germany
| | - Wenhui Huang
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine (CIPMM), University of Saarland, Homburg, Germany
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64
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Exosomes: Their Role in Pathogenesis, Diagnosis and Treatment of Diseases. Cancers (Basel) 2020; 13:cancers13010084. [PMID: 33396739 PMCID: PMC7795854 DOI: 10.3390/cancers13010084] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/18/2020] [Accepted: 12/24/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary The aim of this review is to provide an overview of the current scientific evidence concerning the role played by exosomes in the pathogenesis, diagnosis and treatment of diseases. The potential use of exosomes as delivery vectors for small-molecule therapeutic agents will be discussed. In addition, a special emphasis will be placed on the involvement of exosomes in oncological diseases, as well as to their potential therapeutic application as liquid biopsy tools mainly in cancer diagnosis. A better understanding of exosome biology could improve the results of clinical interventions using exosomes as therapeutic agents. Abstract Exosomes are lipid bilayer particles released from cells into their surrounding environment. These vesicles are mediators of near and long-distance intercellular communication and affect various aspects of cell biology. In addition to their biological function, they play an increasingly important role both in diagnosis and as therapeutic agents. In this paper, we review recent literature related to the molecular composition of exosomes, paying special attention to their role in pathogenesis, along with their application as biomarkers and as therapeutic tools. In this context, we analyze the potential use of exosomes in biomedicine, as well as the limitations that preclude their wider application.
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65
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Abstract
Exosomes are small vesicles secreted by all cell types in the brain and play a role in cell-cell communication through the transfer of cargo or encapsulation. Exosomes in the brain have considerable impact on neuronal development, activation, and regeneration. In addition, exosomes are reported to be involved in the onset and propagation of various neurodegenerative diseases. In this review, we discuss the content of exosomes derived from major cell types in the brain, and their function under physiological and pathological conditions.
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Affiliation(s)
- Xiao-Hui Li
- Institute on Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230001, China.,Neurodegenerative Disease Research Center, University of Science and Technology of China, Hefei, Anhui 230026, China.,CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Juan Zhang
- Institute on Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230001, China.,Neurodegenerative Disease Research Center, University of Science and Technology of China, Hefei, Anhui 230026, China.,CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Ding-Feng Li
- Institute on Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230001, China.,Neurodegenerative Disease Research Center, University of Science and Technology of China, Hefei, Anhui 230026, China.,National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, China.,CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wei Wu
- Organ Transplantation Center, The First Affiliated Hospital of University of Science and Technology of China, Hefei, Anhui 230001, China
| | - Zhong-Wen Xie
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui 230036, China. E-mail:
| | - Qiang Liu
- Institute on Aging and Brain Disorders, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230001, China.,Neurodegenerative Disease Research Center, University of Science and Technology of China, Hefei, Anhui 230026, China.,CAS Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, Yunnan 650223, China.,CAS Key Laboratory of Brain Function and Disease, University of Science and Technology of China, Hefei, Anhui 230026, China. E-mail:
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66
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The Role of Extracellular Vesicles in Demyelination of the Central Nervous System. Int J Mol Sci 2020; 21:ijms21239111. [PMID: 33266211 PMCID: PMC7729475 DOI: 10.3390/ijms21239111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 12/21/2022] Open
Abstract
It is being increasingly demonstrated that extracellular vesicles (EVs) are deeply involved in the physiology of the central nervous system (CNS). Processes such as synaptic activity, neuron-glia communication, myelination and immune response are modulated by EVs. Likewise, these vesicles may participate in many pathological processes, both as triggers of disease or, on the contrary, as mechanisms of repair. EVs play relevant roles in neurodegenerative disorders such as Alzheimer’s or Parkinson’s diseases, in viral infections of the CNS and in demyelinating pathologies such as multiple sclerosis (MS). This review describes the involvement of these membrane vesicles in major demyelinating diseases, including MS, neuromyelitis optica, progressive multifocal leukoencephalopathy and demyelination associated to herpesviruses.
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67
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Hejrati A, Hasani B, Esmaili M, Bashash D, Tavakolinia N, Zafari P. Role of exosome in autoimmunity, with a particular emphasis on rheumatoid arthritis. Int J Rheum Dis 2020; 24:159-169. [PMID: 33159418 DOI: 10.1111/1756-185x.14021] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/01/2020] [Accepted: 10/15/2020] [Indexed: 12/13/2022]
Abstract
Cell-derived exosomes are identified as carriers of lipids, proteins, and genetic materials that participate in cell-cell signal communication, biological process, and cell signaling. Also, their involvement has been reported in a vast array of disorders and inflammatory conditions such as autoimmune diseases. Rheumatoid arthritis (RA), a common cause of joint disorder, is an inflammation-based disease in which the precise understanding of its pathogenesis needs to be further investigated. Also, there is only a palliative care approach for the alleviation of RA symptoms. This paper discusses the recent advances in the biology of exosomes in autoimmune disorders especially in RA, and also provides a new line of research for arthritis therapy using exosomes.
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Affiliation(s)
- Alireza Hejrati
- Department of Internal Medicine, Hazrate-Rasool General Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Bahare Hasani
- Department of Immunology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mozhgan Esmaili
- Department of Immunology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Davood Bashash
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Naeimeh Tavakolinia
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Parisa Zafari
- Department of Immunology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.,Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
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68
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Graykowski DR, Wang YZ, Upadhyay A, Savas JN. The Dichotomous Role of Extracellular Vesicles in the Central Nervous System. iScience 2020; 23:101456. [PMID: 32835924 PMCID: PMC7452271 DOI: 10.1016/j.isci.2020.101456] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 06/20/2020] [Accepted: 08/10/2020] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) are important mediators of intercellular communication. Interest in the role of central nervous system (CNS)-derived EVs has been increasing; however, some skepticism of their importance has persisted because many aspects of their biology remain elusive. This ambiguity is largely due to technical barriers that hamper our ability to achieve a comprehensive understanding of their molecular components and mechanisms responsible for their transmission and uptake. However, accumulating evidence supports the notion that EVs play important roles in basic physiological processes within the CNS during neurodevelopment and synaptic plasticity. Interestingly, EVs also act to spread toxic polypeptides in neurodegenerative diseases. Developing a more profound understanding of the role that EVs play in the CNS could lead to the identification of biomarkers and potential vehicles for drug delivery. Here we highlight our current understanding of CNS EVs and summarize our current understanding of their complex role in the CNS.
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Affiliation(s)
- David R. Graykowski
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Yi-Zhi Wang
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Arun Upadhyay
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Jeffrey N. Savas
- Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
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69
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Bu-Shen-Yi-Sui Capsule, an Herbal Medicine Formula, Promotes Remyelination by Modulating the Molecular Signals via Exosomes in Mice with Experimental Autoimmune Encephalomyelitis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:7895293. [PMID: 32774683 PMCID: PMC7396036 DOI: 10.1155/2020/7895293] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/12/2020] [Accepted: 06/26/2020] [Indexed: 12/21/2022]
Abstract
Multiple sclerosis (MS) is a common inflammatory demyelinating disorder of the central nervous system. Bu-shen-yi-sui capsule (BSYSC) could significantly reduce the relapse rate, prevent the progression of MS, and enhance remyelination following neurological injury in experimental autoimmune encephalomyelitis (EAE), an established model of MS; however, the mechanism underlying the effect of BSYSC on remyelination has not been well elucidated. This study showed that exosomes carrying biological information are involved in the pathological process of MS and that modified exosomes can promote remyelination by modulating related proteins and microRNAs (miRs). Here, the mechanism by which BSYSC promoted remyelination via exosome-mediated molecular signals was investigated in EAE mice and oligodendrocyte progenitor cells (OPCs) in vitro. The results showed that BSYSC treatment significantly improved the body weight and clinical scores of EAE mice, alleviated inflammatory infiltration and nerve fiber injury, protected the ultrastructural integrity of the myelin sheath, and significantly increased the expression of myelin basic protein (MBP) in EAE mice. In an in vitro OPC study, BSYSC-containing serum, especially 20% BSYSC, promoted the proliferation and migration of OPCs and induced OPCs to differentiate into mature oligodendrocytes that expressed MBP. Furthermore, BSYSC treatment regulated the expression of neuropilin- (NRP-) 1 and GTX, downregulated the expression of miR-16, let-7, miR-15, miR-98, miR-486, and miR-182, and upregulated the level of miR-146 in serum exosomes of EAE mice. In conclusion, these results suggested that BSYSC has a neuroprotective effect and facilitates remyelination and that the mechanism underlying the effect of BSYSC on remyelination probably involves regulation of the NRP-1 and GTX proteins and miRs in serum exosomes, which drive promyelination.
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70
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The Emerging Role of Extracellular Vesicles in the Glioma Microenvironment: Biogenesis and Clinical Relevance. Cancers (Basel) 2020; 12:cancers12071964. [PMID: 32707733 PMCID: PMC7409063 DOI: 10.3390/cancers12071964] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 07/07/2020] [Accepted: 07/16/2020] [Indexed: 02/07/2023] Open
Abstract
Gliomas are a diverse group of brain tumors comprised of malignant cells ('tumor' cells) and non-malignant 'normal' cells, including neural (neurons, glia), inflammatory (microglia, macrophage) and vascular cells. Tumor heterogeneity arises in part because, within the glioma mass, both 'tumor' and 'normal' cells secrete factors that form a unique microenvironment to influence tumor progression. Extracellular vesicles (EVs) are critical mediators of intercellular communication between immediate cellular neighbors and distantly located cells in healthy tissues/organs and in tumors, including gliomas. EVs mediate cell-cell signaling as carriers of nucleic acid, lipid and protein cargo, and their content is unique to cell types and physiological states. EVs secreted by non-malignant neural cells have important physiological roles in the healthy brain, which can be altered or co-opted to promote tumor progression and metastasis, acting in combination with glioma-secreted EVs. The cell-type specificity of EV content means that 'vesiculome' data can potentially be used to trace the cell of origin. EVs may also serve as biomarkers to be exploited for disease diagnosis and to assess therapeutic progress. In this review, we discuss how EVs mediate intercellular communication in glioma, and their potential role as biomarkers and readouts of a therapeutic response.
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71
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Salivary exosomes: properties, medical applications, and isolation methods. Mol Biol Rep 2020; 47:6295-6307. [PMID: 32676813 DOI: 10.1007/s11033-020-05659-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 07/08/2020] [Indexed: 02/07/2023]
Abstract
Salivary exosomes are extracellular vesicles (EVs) with abundant CD63 immunoreactivity on their surface. Based on their size and protein composition, these exosomes can be categorized into two classes of exosomes I (mean diameter of 83.5 nm) and II (mean diameter of 40.5 nm). We have attempted to review the features of these exosomes, including origin, composition, separation methods, and their application in medicine. Not only the composition of salivary exosomes is invaluable in term of diagnosis, but can also afford an understanding in roles of the contents and components of these exosomes in the fundamental pathophysiologic processes of different diseases. since these EVs can cross the epithelial barriers they may be essential for transporting of multifarious components from the blood into saliva. Thus, in comparison to other bodily fluids, salivary exosomes are probably a better and accessible tool to examine the function of exosomes in the diagnosis and treatment of disease.
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72
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Domingues HS, Falcão AM, Mendes-Pinto I, Salgado AJ, Teixeira FG. Exosome Circuitry During (De)(Re)Myelination of the Central Nervous System. Front Cell Dev Biol 2020; 8:483. [PMID: 32612996 PMCID: PMC7308472 DOI: 10.3389/fcell.2020.00483] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/22/2020] [Indexed: 12/14/2022] Open
Abstract
Reciprocal neuron-glia cell communication is fundamental for the proper function of the nervous system. Oligodendrocytes are the myelinating cells of the central nervous system (CNS) that insulate and provide trophic support to neurons. This effective interaction is crucial not only for myelination but also for long-term axonal survival and neural connectivity. In recent years, exosomes have been portrayed as key players in intercellular interaction in the context of the healthy and diseased CNS. They act as communicating vehicles, true attachés operating between neurons and glial cells. Despite the complex exosome circuitry within the nervous system, experimental evidence supports the role of exosomes in modulating myelination. Oligodendrocytes secrete exosomes in response to neuronal signals in an electric activity-dependent manner. These released exosomes are then internalized by neurons, contributing to their integrity and activity. In turn, neurons secrete exosomes to control the communication between them and with myelinating cells in order to regulate synaptic function in neuronal development, myelin maintenance, and neuroregeneration. In this review, we provide a critical view of the current understanding on how exosomes, either from CNS-resident cells or from the periphery, contribute to the formation and maintenance of myelin and, additionally, on how the differential content of exosomes in normal and pathological conditions foresees the use of these nanovesicles as putative diagnostic and/or therapeutical agents in white matter degeneration-associated diseases.
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Affiliation(s)
- Helena S Domingues
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's Associate Laboratory, PT Government Associate Laboratory, Braga/Guimarães, Portugal.,International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
| | - Ana Mendanha Falcão
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's Associate Laboratory, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Inês Mendes-Pinto
- International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
| | - António J Salgado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's Associate Laboratory, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Fábio G Teixeira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's Associate Laboratory, PT Government Associate Laboratory, Braga/Guimarães, Portugal
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73
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Exosomes derived from differentiated Schwann cells inhibit Schwann cell migration via microRNAs. Neuroreport 2020; 31:515-522. [DOI: 10.1097/wnr.0000000000001435] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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74
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Vanherle S, Haidar M, Irobi J, Bogie JF, Hendriks JJ. Extracellular vesicle-associated lipids in central nervous system disorders. Adv Drug Deliv Rev 2020; 159:322-331. [PMID: 32360577 DOI: 10.1016/j.addr.2020.04.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/03/2020] [Accepted: 04/26/2020] [Indexed: 12/19/2022]
Abstract
Increasing evidence indicates that lipid metabolism is disturbed in central nervous system (CNS) disorders, such as multiple sclerosis, Alzheimer's, and Parkinson's disease. Extracellular vesicles (EVs), including exosomes and microvesicles, are nanosized particles that play an essential role in intercellular communication and tissue homeostasis by transporting diverse biologically active molecules, including a large variety of lipid species. In the last decade, studies defined that changes in the EV lipidome closely correlate with disease-progression and -remission in CNS disorders. In this review, we summarize and discuss these changes in the EV lipidome and elaborate on the impact of different EV-associated lipids on pathological processes in CNS disorders. We conclude that EV-associated lipids are closely associated with neuroinflammation, CNS repair, and pathological protein aggregation in CNS disorders, and that modulation of the EV lipidome represents a promising therapeutic strategy to halt disease progression in multiple sclerosis, Alzheimer's, and Parkinson's disease. Moreover, we predict that disease-stage specific EV-associated lipid signatures can be invaluable markers for the diagnosis and early detection of CNS disorders in the future.
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75
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The Messenger Apps of the cell: Extracellular Vesicles as Regulatory Messengers of Microglial Function in the CNS. J Neuroimmune Pharmacol 2020; 15:473-486. [PMID: 32337651 DOI: 10.1007/s11481-020-09916-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 03/20/2020] [Indexed: 02/08/2023]
Abstract
The intense effort of investigators, in particular during the past decade, has highlighted the importance of extracellular vesicles (EVs) such as exosomes in regulating both innate and adaptive immunity in the course of a variety of infections, with clear implications for development of novel vaccines, therapeutics, and diagnostics. Current and future efforts now need to focus strongly on teasing apart the intricate and complex molecular mechanisms that operate during EV regulation of immunity. In this review, we discuss recent advances that bear on our current understanding of how EVs, including exosomes, can contribute to the innate immune functions of microglia within the central nervous system (CNS), and we also highlight future important mechanistic questions that need to be addressed. In particular, recent findings that highlight the crosstalk between autophagy and exosome pathways and their implications for innate immune functions of microglia will be presented. Microglial activation has been shown to play a key role in neuroAIDS, a neuro-infectious disease for which the importance of exosome functions, including exosome-autophagy interplay, has been reported. The importance of exosomes and exosome-autophagy crosstalk involving microglia has also been shown for the Parkinson's disease (PD), a neurodegenerative disease that is thought to be linked with immune dysfunction and involve infectious agents as trigger. Considering the accumulation of recent findings and the vibrancy of the EV field, we anticipate that future studies will continue to have a deep impact on our understanding of the CNS pathologies that are influenced by the functions of microglia and of the infectious disease mechanisms in general. Graphical Abstract.
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76
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Krämer-Albers EM. Extracellular vesicles in the oligodendrocyte microenvironment. Neurosci Lett 2020; 725:134915. [PMID: 32208226 DOI: 10.1016/j.neulet.2020.134915] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 03/05/2020] [Accepted: 03/15/2020] [Indexed: 12/16/2022]
Abstract
Extracellular vesicles (EVs) recently took centre stage as mediators of cellular crosstalk modulating the tissue microenvironment. Released by all types of neural cells, EVs may execute a broad spectrum of functions ranging from maintenance of neuronal homeostasis and regulation of neural plasticity to the spread of neurodegenerative agents. Myelinating oligodendrocytes and axons form a highly specialized functional entity that depends on intimate interactions within the oligodendrocyte-neuron niche. EVs released by oligodendrocytes are internalized by neurons in response to neuronal signals and exhibit neuroprotective properties but also may influence other cells present in the microenvironment. Here we discuss the role of EVs released by oligodendrocytes in regulating development, homeostatic maintenance and regeneration within the oligodendrocyte niche.
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Affiliation(s)
- Eva-Maria Krämer-Albers
- Institute of Developmental Biology and Neurobiology, Cellular Neurobiology, Biology of Extracellular Vesicles Group, University of Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128, Mainz, Germany.
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77
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Kumar R, Tang Q, Müller SA, Gao P, Mahlstedt D, Zampagni S, Tan Y, Klingl A, Bötzel K, Lichtenthaler SF, Höglinger GU, Koeglsperger T. Fibroblast Growth Factor 2-Mediated Regulation of Neuronal Exosome Release Depends on VAMP3/Cellubrevin in Hippocampal Neurons. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902372. [PMID: 32195080 PMCID: PMC7080514 DOI: 10.1002/advs.201902372] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 12/11/2019] [Indexed: 05/06/2023]
Abstract
Extracellular vesicles (EVs) are endogenous membrane-derived vesicles that shuttle bioactive molecules between glia and neurons, thereby promoting neuronal survival and plasticity in the central nervous system (CNS) and contributing to neurodegenerative conditions. Although EVs hold great potential as CNS theranostic nanocarriers, the specific molecular factors that regulate neuronal EV uptake and release are currently unknown. A combination of patch-clamp electrophysiology and pH-sensitive dye imaging is used to examine stimulus-evoked EV release in individual neurons in real time. Whereas spontaneous electrical activity and the application of a high-frequency stimulus induce a slow and prolonged fusion of multivesicular bodies (MVBs) with the plasma membrane (PM) in a subset of cells, the neurotrophic factor basic fibroblast growth factor (bFGF) greatly increases the rate of stimulus-evoked MVB-PM fusion events and, consequently, the abundance of EVs in the culture medium. Proteomic analysis of neuronal EVs demonstrates bFGF increases the abundance of the v-SNARE vesicle-associated membrane protein 3 (VAMP3, cellubrevin) on EVs. Conversely, knocking-down VAMP3 in cultured neurons attenuates the effect of bFGF on EV release. The results determine the temporal characteristics of MVB-PM fusion in hippocampal neurons and reveal a new function for bFGF signaling in controlling neuronal EV release.
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Affiliation(s)
- Rohit Kumar
- Department of Translational NeurodegenerationGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
- Department of NeurologyLudwig Maximilian UniversityMarchioninistr. 1581377MunichGermany
- Graduate Program for Experimental MedicineFaculty of MedicineTechnical University of MunichIsmaninger Straße 2281675MünchenGermany
| | - Qilin Tang
- Department of Translational NeurodegenerationGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
- Department of NeurologyLudwig Maximilian UniversityMarchioninistr. 1581377MunichGermany
| | - Stephan A. Müller
- Department of NeuroproteomicsGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
| | - Pan Gao
- Department of Translational NeurodegenerationGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
| | - Diana Mahlstedt
- Department of Translational NeurodegenerationGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
- Graduate Program for Experimental MedicineFaculty of MedicineTechnical University of MunichIsmaninger Straße 2281675MünchenGermany
| | - Sofia Zampagni
- Department of Translational NeurodegenerationGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
| | - Yi Tan
- Department of Translational NeurodegenerationGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
- Graduate Program for Experimental MedicineFaculty of MedicineTechnical University of MunichIsmaninger Straße 2281675MünchenGermany
| | - Andreas Klingl
- Plant Development and Electron MicroscopyDepartment of Biology IBiocenterLudwig Maximilian UniversityGroßhaderner Str. 282152Planegg‐MartinsriedGermany
| | - Kai Bötzel
- Department of NeurologyLudwig Maximilian UniversityMarchioninistr. 1581377MunichGermany
| | - Stefan F. Lichtenthaler
- Department of NeuroproteomicsGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
- NeuroproteomicsKlinikum rechts der IsarInstitute for Advanced StudyTechnical University of MunichIsmaninger Straße 2281675MunichGermany
| | - Günter U. Höglinger
- Department of Translational NeurodegenerationGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
- Department of Neurology (OE 7210)Hannover Medical SchoolCarl‐Neuberg‐Str. 130625HannoverGermany
- Department of NeurologyTechnical University of MunichIsmaninger Str. 2281675MunichGermany
| | - Thomas Koeglsperger
- Department of Translational NeurodegenerationGerman Centre for Neurodegenerative DiseasesFeodor‐Lynen‐Str. 1781377MunichGermany
- Department of NeurologyLudwig Maximilian UniversityMarchioninistr. 1581377MunichGermany
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Surman M, Drożdż A, Stępień E, Przybyło M. Extracellular Vesicles as Drug Delivery Systems - Methods of Production and Potential Therapeutic Applications. Curr Pharm Des 2020; 25:132-154. [PMID: 30848183 DOI: 10.2174/1381612825666190306153318] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 03/01/2019] [Indexed: 01/08/2023]
Abstract
Drug delivery systems are created to achieve the desired therapeutic effect of a specific pharmaceutical compound. Numerous drawbacks and side effects such as unfavorable pharmacokinetics, lack of tissue selectivity, immunogenicity, increased systemic clearance and toxicity, have been observed for currently available drug delivery systems (DDSs). The use of natural and artificial extracellular vesicles (EVs) in drug delivery may help to solve the aforementioned problems faced by different DDSs. Due to their self-origin, small size, flexibility, the presence of multiple adhesive molecules on their surfaces as well as their function as biomolecules carriers, EVs are the perfect candidates for DDSs. Currently, several drug delivery systems based on EVs have been proposed. While the great potential of these particles in targeted drug delivery has been recognized in cancer, hepatitis C, neurodegenerative diseases, inflammatory states etc., this field is still in the early stage of development. Unfortunately, the use of EVs from natural sources (cell cultures, body fluids) results in numerous problems in terms of the heterogeneity of isolated vesicle population as well as the method of isolation thereof, which may influence vesicle composition and properties. Therefore, there is a significant need for the synthesis of artificial EV-based DDSs under strictly controlled laboratory conditions and from well-defined biomolecules (proteins and lipids). Vesicle-mimetic delivery systems, characterized by properties similar to natural EVs, will bring new opportunities to study the mechanisms of DDS internalization and their biological activity after delivering their cargo to a target cell.
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Affiliation(s)
- Magdalena Surman
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Krakow, Poland
| | - Anna Drożdż
- Department of Medical Physics, M. Smoluchowski Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Krakow, Poland
| | - Ewa Stępień
- Department of Medical Physics, M. Smoluchowski Institute of Physics, Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Krakow, Poland
| | - Małgorzata Przybyło
- Department of Glycoconjugate Biochemistry, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Krakow, Poland
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79
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Muraoka S, Lin W, Chen M, Hersh SW, Emili A, Xia W, Ikezu T. Assessment of separation methods for extracellular vesicles from human and mouse brain tissues and human cerebrospinal fluids. Methods 2020; 177:35-49. [PMID: 32035230 DOI: 10.1016/j.ymeth.2020.02.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 02/03/2020] [Indexed: 12/11/2022] Open
Abstract
Extracellular vesicle (EV) is a unified terminology of membrane-enclosed vesicular species ubiquitously secreted by almost every cell type and present in all body fluids. They carry a cargo of lipids, metabolites, nucleic acids and proteins for their clearance from cells as well as for cell-to-cell communications. The exact composition of EVs and their specific functions are not well understood due to the underdevelopment of the separation protocols, especially those from the central nervous system including animal and human brain tissues as well as cerebrospinal fluids, and the low yield of proteins in the separated EVs. To understand their exact molecular composition and their functional roles, development of the reliable protocols for EV separation is necessary. Here we report the methods for EV separation from human and mouse unfixed frozen brain tissues by a sucrose step gradient ultracentrifugation method, and from human cerebrospinal fluids by an affinity capture method. The separated EVs were assessed for morphological, biophysical and proteomic properties of separated EVs by nanoparticle tracking analysis, transmission electron microscopy, and labeled and label-free mass spectrometry for protein profiling with step-by-step protocols for each assessment.
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Affiliation(s)
- Satoshi Muraoka
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA.
| | - Weiwei Lin
- Center for Network Systems Biology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Mei Chen
- Geriatric Research, Education and Clinical Center, Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA 01730, USA
| | - Samuel W Hersh
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA
| | - Andrew Emili
- Center for Network Systems Biology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Weiming Xia
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA; Geriatric Research, Education and Clinical Center, Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA 01730, USA
| | - Tsuneya Ikezu
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA; Department of Neurology, Boston University Alzheimer's Disease and CTE Centers, Boston University School of Medicine, Boston, MA 02118, USA; Center for Systems Neuroscience, Boston University, Boston, MA 2215, USA.
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80
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Thankam FG, Agrawal DK. Infarct Zone: a Novel Platform for Exosome Trade in Cardiac Tissue Regeneration. J Cardiovasc Transl Res 2020; 13:686-701. [PMID: 31907784 DOI: 10.1007/s12265-019-09952-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 12/27/2019] [Indexed: 12/13/2022]
Abstract
The global incidence of coronary artery diseases (CADs), especially myocardial infarction (MI), has drastically increased in recent years. Even though the conventional therapies have improved the outcomes, the post-MI complications and the increased rate of recurrence among the survivors are still alarming. Molecular events associated with the pathogenesis and the adaptive responses of the surviving myocardium are largely unknown. Focus on exosome-mediated signaling for cell-cell/matrix communications at the infarct zone reflects an emerging opportunity in cardiac regeneration. Also, cardiac tissue engineering provides promising insights for the next generation of therapeutic approaches in the management of CADs. In this article, we critically reviewed the current understanding on the biology of cardiac exosomes, therapeutic potential of exosomes, and recent developments in cardiac tissue engineering and discussed novel translational approaches based on tissue engineering and exosomes for cardiac regeneration and CADs.
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Affiliation(s)
- Finosh G Thankam
- Department of Translational Research, Western University of Health Sciences, 309 E. Second Street, Pomona, CA, 91766, USA
| | - Devendra K Agrawal
- Department of Translational Research, Western University of Health Sciences, 309 E. Second Street, Pomona, CA, 91766, USA.
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81
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Pistono C, Bister N, Stanová I, Malm T. Glia-Derived Extracellular Vesicles: Role in Central Nervous System Communication in Health and Disease. Front Cell Dev Biol 2020. [PMID: 33569385 DOI: 10.3389/cell.2020.623771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Abstract
Glial cells are crucial for the maintenance of correct neuronal functionality in a physiological state and intervene to restore the equilibrium when environmental or pathological conditions challenge central nervous system homeostasis. The communication between glial cells and neurons is essential and extracellular vesicles (EVs) take part in this function by transporting a plethora of molecules with the capacity to influence the function of the recipient cells. EVs, including exosomes and microvesicles, are a heterogeneous group of biogenetically distinct double membrane-enclosed vesicles. Once released from the cell, these two types of vesicles are difficult to discern, thus we will call them with the general term of EVs. This review is focused on the EVs secreted by astrocytes, oligodendrocytes and microglia, aiming to shed light on their influence on neurons and on the overall homeostasis of the central nervous system functions. We collect evidence on neuroprotective and homeostatic effects of glial EVs, including neuronal plasticity. On the other hand, current knowledge of the detrimental effects of the EVs in pathological conditions is addressed. Finally, we propose directions for future studies and we evaluate the potential of EVs as a therapeutic treatment for neurological disorders.
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Affiliation(s)
- Cristiana Pistono
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Nea Bister
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Iveta Stanová
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Tarja Malm
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
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82
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Shaimardanova AA, Solovyeva VV, Chulpanova DS, James V, Kitaeva KV, Rizvanov AA. Extracellular vesicles in the diagnosis and treatment of central nervous system diseases. Neural Regen Res 2020; 15:586-596. [PMID: 31638080 PMCID: PMC6975137 DOI: 10.4103/1673-5374.266908] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Extracellular vesicles, including exosomes and microvesicles, play a fundamental role in the activity of the nervous system, participating in signal transmission between neurons and providing the interaction of central nervous system with all body systems. In many neurodegenerative diseases, neurons pack toxic substances into vesicles and release them into the extracellular space, which leads to the spread of misfolded neurotoxic proteins. The contents of neuron-derived extracellular vesicles may indicate pathological changes in the central nervous system, and the analysis of extracellular vesicle molecular content contributes to the development of non-invasive methods for the diagnosis of many central nervous system diseases. Extracellular vesicles of neuronal origin can be isolated from various biological fluids due to their ability to cross the blood-brain barrier. Today, the diagnostic potential of almost all toxic proteins involved in nervous system disease pathogenesis, specifically α-synuclein, tau protein, superoxide dismutase 1, FUS, leucine-rich repeat kinase 2, as well as some synaptic proteins, has been well evidenced. Special attention is paid to extracellular RNAs mostly associated with extracellular vesicles, which are important in the onset and development of many neurodegenerative diseases. Depending on parental cell type, extracellular vesicles may have different therapeutic properties, including neuroprotective, regenerative, and anti-inflammatory. Due to nano size, biosafety, ability to cross the blood-brain barrier, possibility of targeted delivery and the lack of an immune response, extracellular vesicles are a promising vehicle for the delivery of therapeutic substances for the treatment of neurodegenerative diseases and drug delivery to the brain. This review describes modern approaches of diagnosis and treatment of central nervous system diseases using extracellular vesicles.
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Affiliation(s)
- Alisa A Shaimardanova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Valeriya V Solovyeva
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, The Russian Academy of Sciences, Moscow, Russia
| | - Daria S Chulpanova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, The Russian Academy of Sciences, Moscow, Russia
| | - Victoria James
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, UK
| | - Kristina V Kitaeva
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Albert A Rizvanov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
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83
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Cell-to-Cell Communication in Learning and Memory: From Neuro- and Glio-Transmission to Information Exchange Mediated by Extracellular Vesicles. Int J Mol Sci 2019; 21:ijms21010266. [PMID: 31906013 PMCID: PMC6982255 DOI: 10.3390/ijms21010266] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/14/2019] [Accepted: 12/28/2019] [Indexed: 02/06/2023] Open
Abstract
Most aspects of nervous system development and function rely on the continuous crosstalk between neurons and the variegated universe of non-neuronal cells surrounding them. The most extraordinary property of this cellular community is its ability to undergo adaptive modifications in response to environmental cues originating from inside or outside the body. Such ability, known as neuronal plasticity, allows long-lasting modifications of the strength, composition and efficacy of the connections between neurons, which constitutes the biochemical base for learning and memory. Nerve cells communicate with each other through both wiring (synaptic) and volume transmission of signals. It is by now clear that glial cells, and in particular astrocytes, also play critical roles in both modes by releasing different kinds of molecules (e.g., D-serine secreted by astrocytes). On the other hand, neurons produce factors that can regulate the activity of glial cells, including their ability to release regulatory molecules. In the last fifteen years it has been demonstrated that both neurons and glial cells release extracellular vesicles (EVs) of different kinds, both in physiologic and pathological conditions. Here we discuss the possible involvement of EVs in the events underlying learning and memory, in both physiologic and pathological conditions.
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84
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Makhija EP, Espinosa-Hoyos D, Jagielska A, Van Vliet KJ. Mechanical regulation of oligodendrocyte biology. Neurosci Lett 2019; 717:134673. [PMID: 31838017 DOI: 10.1016/j.neulet.2019.134673] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 11/25/2019] [Accepted: 12/01/2019] [Indexed: 12/27/2022]
Abstract
Oligodendrocytes (OL) are a subset of glial cells in the central nervous system (CNS) comprising the brain and spinal cord. The CNS environment is defined by complex biochemical and biophysical cues during development and response to injury or disease. In the last decade, significant progress has been made in understanding some of the key biophysical factors in the CNS that modulate OL biology, including their key role in myelination of neurons. Taken together, those studies offer translational implications for remyelination therapies, pharmacological research, identification of novel drug targets, and improvements in methods to generate human oligodendrocyte progenitor cells (OPCs) and OLs from donor stem cells in vitro. This review summarizes current knowledge of how various physical and mechanical cues affect OL biology and its implications for disease, therapeutic approaches, and generation of human OPCs and OLs.
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Affiliation(s)
- Ekta P Makhija
- BioSystems & Micromechanics (BioSyM) Interdisciplinary Research Group, Singapore-MIT Alliance for Research & Technology (SMART) CREATE, Singapore 138602; Critical Analytics for Manufacturing Personalized-Medicine (CAMP) Interdisciplinary Research Group, Singapore-MIT Alliance for Research & Technology (SMART) CREATE, 138602, Singapore
| | - Daniela Espinosa-Hoyos
- BioSystems & Micromechanics (BioSyM) Interdisciplinary Research Group, Singapore-MIT Alliance for Research & Technology (SMART) CREATE, Singapore 138602; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Anna Jagielska
- BioSystems & Micromechanics (BioSyM) Interdisciplinary Research Group, Singapore-MIT Alliance for Research & Technology (SMART) CREATE, Singapore 138602; Department of Materials Science & Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA.
| | - Krystyn J Van Vliet
- BioSystems & Micromechanics (BioSyM) Interdisciplinary Research Group, Singapore-MIT Alliance for Research & Technology (SMART) CREATE, Singapore 138602; Critical Analytics for Manufacturing Personalized-Medicine (CAMP) Interdisciplinary Research Group, Singapore-MIT Alliance for Research & Technology (SMART) CREATE, 138602, Singapore; Department of Materials Science & Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA.
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85
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Mathews PM, Levy E. Exosome Production Is Key to Neuronal Endosomal Pathway Integrity in Neurodegenerative Diseases. Front Neurosci 2019; 13:1347. [PMID: 31911768 PMCID: PMC6920185 DOI: 10.3389/fnins.2019.01347] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 11/29/2019] [Indexed: 12/28/2022] Open
Abstract
Dysfunction of the endosomal–lysosomal system is a prominent pathogenic factor in Alzheimer’s disease (AD) and other neurodevelopmental and neurodegenerative disorders. We and others have extensively characterized the neuronal endosomal pathway pathology that results from either triplication of the amyloid-β precursor protein (APP) gene in Down syndrome (DS) or from expression of the apolipoprotein E ε4 allele (APOE4), the greatest genetic risk factor for late-onset AD. More recently brain exosomes, extracellular vesicles that are generated within and released from endosomal compartments, have been shown to be altered in DS and by APOE4 expression. In this review, we discuss the emerging data arguing for an interdependence between exosome production and endosomal pathway integrity in the brain. In vitro and in vivo studies indicate that altered trafficking through the endosomal pathway or compromised cargo turnover within lysosomes can affect the production, secretion, and content of exosomes. Conversely, exosome biogenesis can affect the endosomal–lysosomal system. Indeed, we propose that efficient exosome release helps to modulate flux through the neuronal endosomal pathway by decompressing potential “traffic jams.” Exosome secretion may have the added benefit of unburdening the neuron’s lysosomal system by delivering endosomal–lysosomal material into the extracellular space, where other cell types may contribute to the degradation of neuronal debris. Thus, maintaining robust neuronal exosome production may prevent or mitigate endosomal and lysosomal abnormalities linked to aging and neurodegenerative diseases. While the current evidence suggests that the exosomal system in the brain can be modulated both by membrane lipid composition and the expression of key proteins that contribute to the formation and secretion of exosomes, how exosomal pathway-regulatory elements sense and respond to perturbations in the endosomal pathway is not well understood. Based upon findings from the extensively studied DS and APOE4 models, we propose that enhanced neuronal exosome secretion can be a protective response, reducing pathological disruption of the endosomal–lysosomal system in disease-vulnerable neurons. Developing therapeutic approaches that help to maintain or enhance neuronal exosome biogenesis and release may be beneficial in a range of disorders of the central nervous system.
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Affiliation(s)
- Paul M Mathews
- Center for Dementia Research, The Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States.,Department of Psychiatry, New York University Langone Health, New York, NY, United States.,NYU Neuroscience Institute, New York University Langone Health, New York, NY, United States
| | - Efrat Levy
- Center for Dementia Research, The Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, United States.,Department of Psychiatry, New York University Langone Health, New York, NY, United States.,NYU Neuroscience Institute, New York University Langone Health, New York, NY, United States.,Department of Biochemistry and Molecular Pharmacology, New York University Langone Health, New York, NY, United States
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86
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The Role of Vesicle Trafficking and Release in Oligodendrocyte Biology. Neurochem Res 2019; 45:620-629. [PMID: 31782103 DOI: 10.1007/s11064-019-02913-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/11/2019] [Accepted: 11/16/2019] [Indexed: 12/11/2022]
Abstract
Oligodendrocytes are a subtype of glial cells found within the central nervous system (CNS), responsible for the formation and maintenance of specialized myelin membranes which wrap neuronal axons. The development of myelin requires tight coordination for the cell to deliver lipid and protein building blocks to specific myelin segments at the right time. Both internal and external cues control myelination, thus the reception of these signals also requires precise regulation. In late years, a growing body of evidence indicates that oligodendrocytes, like many other cell types, may use extracellular vesicles (EVs) as a medium for transferring information. The field of EV research has expanded rapidly over the past decade, with new contributions that suggest EVs might have direct involvement in communications with neurons and other glial cells to fine tune oligodendroglial function. This functional role of EVs might also be maladaptive, as it has likewise been implicated in the spreading of toxic molecules within the brain during disease. In this review we will discuss the field's current understanding of extracellular vesicle biology within oligodendrocytes, and their contribution to physiologic and pathologic conditions.
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87
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Sekine Y, Lindborg JA, Strittmatter SM. A proteolytic C-terminal fragment of Nogo-A (reticulon-4A) is released in exosomes and potently inhibits axon regeneration. J Biol Chem 2019; 295:2175-2183. [PMID: 31748413 DOI: 10.1074/jbc.ra119.009896] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 11/14/2019] [Indexed: 11/06/2022] Open
Abstract
Glial signals are known to inhibit axonal regeneration and functional recovery after mammalian central nervous system trauma, including spinal cord injury. Such signals include membrane-associated proteins of the oligodendrocyte plasma membrane and astrocyte-derived, matrix-associated proteins. Here, using cell lines and primary cortical neuron cultures, recombinant protein expression, immunoprecipitation and immunoblot assays, transmission EM of exosomes, and axon regeneration assays, we explored the secretion and activity of the myelin-associated neurite outgrowth inhibitor Nogo-A and observed exosomal release of a 24-kDa C-terminal Nogo-A fragment from cultured cells. We found that the cleavage site in this 1192-amino-acid-long fragment is located between amino acids 961-971. We also detected a Nogo-66 receptor (NgR1)-interacting Nogo-66 domain on the exosome surface. Enzyme inhibitor treatment and siRNA knockdown revealed that β-secretase 1 (BACE1) is the protease responsible for Nogo-A cleavage. Functionally, exosomes with the Nogo-66 domain on their surface potently inhibited axonal regeneration of mechanically injured cerebral cortex neurons from mice. Production of this fragment was observed in the exosomal fraction from neuronal tissue lysates after spinal cord crush injury of mice. We also noted that, relative to the exosomal marker Alix, a Nogo-immunoreactive, 24-kDa protein is enriched in exosomes 2-fold after injury. We conclude that membrane-associated Nogo-A produced in oligodendrocytes is processed proteolytically by BACE1, is released via exosomes, and is a potent diffusible inhibitor of regenerative growth in NgR1-expressing axons.
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Affiliation(s)
- Yuichi Sekine
- Cellular Neuroscience, Neurodegeneration, and Repair Program, Departments of Neurology and of Neuroscience, Yale University School of Medicine, New Haven, Connecticut 06536
| | - Jane A Lindborg
- Cellular Neuroscience, Neurodegeneration, and Repair Program, Departments of Neurology and of Neuroscience, Yale University School of Medicine, New Haven, Connecticut 06536
| | - Stephen M Strittmatter
- Cellular Neuroscience, Neurodegeneration, and Repair Program, Departments of Neurology and of Neuroscience, Yale University School of Medicine, New Haven, Connecticut 06536.
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88
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Li H, Luo Y, Zhu L, Hua W, Zhang Y, Zhang H, Zhang L, Li Z, Xing P, Zhang Y, Hong B, Yang P, Liu J. Glia-derived exosomes: Promising therapeutic targets. Life Sci 2019; 239:116951. [PMID: 31626787 DOI: 10.1016/j.lfs.2019.116951] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/26/2019] [Accepted: 10/09/2019] [Indexed: 01/08/2023]
Abstract
Glia is an important component of the nervous system that is involved in neurotransmitter uptake, signal transduction, myelin synthesis, neurodevelopment, and immune response. Exosomes are extracellular vesicles that are secreted from certain types of cells, and are known to mediate glia function. Glia-derived exosomes (GDEs) can transport proteins, nucleotides and cellular waste, and exert both protective and toxic effects on the nervous system. GDEs promote glia-neuron communication, anti-stress responses, anti-inflammation and neurite outgrowth, and may also be involved in neurological disease such as glioma, glioblastoma, Alzheimer's disease, Parkinson disease and neuronal HIV infections. This review summarizes the current research on GDEs and their functions, with emphasis on their therapeutic potential.
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Affiliation(s)
- He Li
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Graduate School, Second Military Medical University, Shanghai, China
| | - Yin Luo
- Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Luojiang Zhu
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Graduate School, Second Military Medical University, Shanghai, China
| | - Weilong Hua
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Graduate School, Second Military Medical University, Shanghai, China
| | - Yongxin Zhang
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Hongjian Zhang
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Lei Zhang
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Zifu Li
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Pengfei Xing
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yongwei Zhang
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Bo Hong
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Pengfei Yang
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jianmin Liu
- Changhai Stroke Center, Changhai Hospital, Second Military Medical University, Shanghai, China; Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai, China.
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89
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Stadelmann C, Timmler S, Barrantes-Freer A, Simons M. Myelin in the Central Nervous System: Structure, Function, and Pathology. Physiol Rev 2019; 99:1381-1431. [PMID: 31066630 DOI: 10.1152/physrev.00031.2018] [Citation(s) in RCA: 292] [Impact Index Per Article: 58.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Oligodendrocytes generate multiple layers of myelin membrane around axons of the central nervous system to enable fast and efficient nerve conduction. Until recently, saltatory nerve conduction was considered the only purpose of myelin, but it is now clear that myelin has more functions. In fact, myelinating oligodendrocytes are embedded in a vast network of interconnected glial and neuronal cells, and increasing evidence supports an active role of oligodendrocytes within this assembly, for example, by providing metabolic support to neurons, by regulating ion and water homeostasis, and by adapting to activity-dependent neuronal signals. The molecular complexity governing these interactions requires an in-depth molecular understanding of how oligodendrocytes and axons interact and how they generate, maintain, and remodel their myelin sheaths. This review deals with the biology of myelin, the expanded relationship of myelin with its underlying axons and the neighboring cells, and its disturbances in various diseases such as multiple sclerosis, acute disseminated encephalomyelitis, and neuromyelitis optica spectrum disorders. Furthermore, we will highlight how specific interactions between astrocytes, oligodendrocytes, and microglia contribute to demyelination in hereditary white matter pathologies.
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Affiliation(s)
- Christine Stadelmann
- Institute of Neuropathology, University Medical Center Göttingen , Göttingen , Germany ; Institute of Neuronal Cell Biology, Technical University Munich , Munich , Germany ; German Center for Neurodegenerative Diseases (DZNE), Munich , Germany ; Department of Neuropathology, University Medical Center Leipzig , Leipzig , Germany ; Munich Cluster of Systems Neurology (SyNergy), Munich , Germany ; and Max Planck Institute of Experimental Medicine, Göttingen , Germany
| | - Sebastian Timmler
- Institute of Neuropathology, University Medical Center Göttingen , Göttingen , Germany ; Institute of Neuronal Cell Biology, Technical University Munich , Munich , Germany ; German Center for Neurodegenerative Diseases (DZNE), Munich , Germany ; Department of Neuropathology, University Medical Center Leipzig , Leipzig , Germany ; Munich Cluster of Systems Neurology (SyNergy), Munich , Germany ; and Max Planck Institute of Experimental Medicine, Göttingen , Germany
| | - Alonso Barrantes-Freer
- Institute of Neuropathology, University Medical Center Göttingen , Göttingen , Germany ; Institute of Neuronal Cell Biology, Technical University Munich , Munich , Germany ; German Center for Neurodegenerative Diseases (DZNE), Munich , Germany ; Department of Neuropathology, University Medical Center Leipzig , Leipzig , Germany ; Munich Cluster of Systems Neurology (SyNergy), Munich , Germany ; and Max Planck Institute of Experimental Medicine, Göttingen , Germany
| | - Mikael Simons
- Institute of Neuropathology, University Medical Center Göttingen , Göttingen , Germany ; Institute of Neuronal Cell Biology, Technical University Munich , Munich , Germany ; German Center for Neurodegenerative Diseases (DZNE), Munich , Germany ; Department of Neuropathology, University Medical Center Leipzig , Leipzig , Germany ; Munich Cluster of Systems Neurology (SyNergy), Munich , Germany ; and Max Planck Institute of Experimental Medicine, Göttingen , Germany
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90
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Doyle LM, Wang MZ. Overview of Extracellular Vesicles, Their Origin, Composition, Purpose, and Methods for Exosome Isolation and Analysis. Cells 2019; 8:E727. [PMID: 31311206 PMCID: PMC6678302 DOI: 10.3390/cells8070727] [Citation(s) in RCA: 1659] [Impact Index Per Article: 331.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/11/2019] [Accepted: 07/12/2019] [Indexed: 12/15/2022] Open
Abstract
The use of extracellular vesicles, specifically exosomes, as carriers of biomarkers in extracellular spaces has been well demonstrated. Despite their promising potential, the use of exosomes in the clinical setting is restricted due to the lack of standardization in exosome isolation and analysis methods. The purpose of this review is to not only introduce the different types of extracellular vesicles but also to summarize their differences and similarities, and discuss different methods of exosome isolation and analysis currently used. A thorough understanding of the isolation and analysis methods currently being used could lead to some standardization in the field of exosomal research, allowing the use of exosomes in the clinical setting to become a reality.
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Affiliation(s)
- Laura M Doyle
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS 66047, USA
| | - Michael Zhuo Wang
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS 66047, USA.
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91
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You Y, Ikezu T. Emerging roles of extracellular vesicles in neurodegenerative disorders. Neurobiol Dis 2019; 130:104512. [PMID: 31229685 DOI: 10.1016/j.nbd.2019.104512] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 06/17/2019] [Indexed: 12/11/2022] Open
Abstract
Extracellular vesicles (EVs) are heterogeneous cell-derived membranous vesicles which carry a large diversity of molecules such as proteins and RNA species. They are now considered to be a general mode of intercellular communication by direct transfer of biomolecules. Emerging evidence demonstrates that EVs are involved in multiple pathological processes of brain diseases including neurodegenerative disorders. In this review, we investigate the current knowledge about EV biology. We also provide an overview of the roles of EVs in related brain diseases, particularly in neurodegenerative disorders. Finally, we discuss their potential applications as novel biomarkers as well as the developments of EV-based therapies.
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Affiliation(s)
- Yang You
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA
| | - Tsuneya Ikezu
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA; Neurology, Boston University School of Medicine, Boston, MA, USA.
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92
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Seyedsadr MS, Weinmann O, Amorim A, Ineichen BV, Egger M, Mirnajafi-Zadeh J, Becher B, Javan M, Schwab ME. Inactivation of sphingosine-1-phosphate receptor 2 (S1PR2) decreases demyelination and enhances remyelination in animal models of multiple sclerosis. Neurobiol Dis 2019; 124:189-201. [DOI: 10.1016/j.nbd.2018.11.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 10/08/2018] [Accepted: 11/19/2018] [Indexed: 10/27/2022] Open
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93
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Malloci M, Perdomo L, Veerasamy M, Andriantsitohaina R, Simard G, Martínez MC. Extracellular Vesicles: Mechanisms in Human Health and Disease. Antioxid Redox Signal 2019; 30:813-856. [PMID: 29634347 DOI: 10.1089/ars.2017.7265] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
SIGNIFICANCE Secreted extracellular vesicles (EVs) are now considered veritable entities for diagnosis, prognosis, and therapeutics. These structures are able to interact with target cells and modify their phenotype and function. Recent Advances: Since composition of EVs depends on the cell type of origin and the stimulation that leads to their release, the analysis of EV content remains an important input to understand the potential effects of EVs on target cells. CRITICAL ISSUES Here, we review recent data related to the mechanisms involved in the formation of EVs and the methods allowing specific EV isolation and identification. Also, we analyze the potential use of EVs as biomarkers in different pathologies such as diabetes, obesity, atherosclerosis, neurodegenerative diseases, and cancer. Besides, their role in these diseases is discussed. Finally, we consider EVs enriched in microRNA or drugs as potential therapeutic cargo able to deliver desirable information to target cells/tissues. FUTURE DIRECTIONS We underline the importance of the homogenization of the parameters of isolation of EVs and their characterization, which allow considering EVs as excellent biomarkers for diagnosis and prognosis.
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Affiliation(s)
- Marine Malloci
- 1 INSERM UMR 1063, Stress Oxydant et Pathologies Métaboliques, UNIV Angers, Université Bretagne Loire, Angers, France
| | - Liliana Perdomo
- 1 INSERM UMR 1063, Stress Oxydant et Pathologies Métaboliques, UNIV Angers, Université Bretagne Loire, Angers, France
| | - Maëva Veerasamy
- 1 INSERM UMR 1063, Stress Oxydant et Pathologies Métaboliques, UNIV Angers, Université Bretagne Loire, Angers, France
| | - Ramaroson Andriantsitohaina
- 1 INSERM UMR 1063, Stress Oxydant et Pathologies Métaboliques, UNIV Angers, Université Bretagne Loire, Angers, France.,2 Centre Hospitalo-Universitaire d'Angers, Angers, France
| | - Gilles Simard
- 1 INSERM UMR 1063, Stress Oxydant et Pathologies Métaboliques, UNIV Angers, Université Bretagne Loire, Angers, France.,2 Centre Hospitalo-Universitaire d'Angers, Angers, France
| | - M Carmen Martínez
- 1 INSERM UMR 1063, Stress Oxydant et Pathologies Métaboliques, UNIV Angers, Université Bretagne Loire, Angers, France.,2 Centre Hospitalo-Universitaire d'Angers, Angers, France
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94
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Decoding epigenetic cell signaling in neuronal differentiation. Semin Cell Dev Biol 2019; 95:12-24. [PMID: 30578863 DOI: 10.1016/j.semcdb.2018.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 12/18/2018] [Indexed: 12/18/2022]
Abstract
Neurogenesis is the process by which new neurons are generated in the brain. Neural stem cells (NSCs) are differentiated into neurons, which are integrated into the neural network. Nowadays, pluripotent stem cells, multipotent stem cells, and induced pluripotent stem cells can be artificially differentiated into neurons utilizing several techniques. Specific transcriptional profiles from NSCs during differentiation are frequently used to approach and observe phenotype alteration and functional determination of neurons. In this context, the role of non-coding RNA, transcription factors and epigenetic changes in neuronal development and differentiation has gained importance. Epigenetic elucidation has become a field of intense research due to distinct patterns of normal conditions and different neurodegenerative disorders, which can be explored to develop new diagnostic methods or gene therapies. In this review, we discuss the complexity of transcription factors, non-coding RNAs, and extracellular vesicles that are responsible for guiding and coordinating neural development.
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95
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Extracellular Vesicle-Mediated Cell⁻Cell Communication in the Nervous System: Focus on Neurological Diseases. Int J Mol Sci 2019; 20:ijms20020434. [PMID: 30669512 PMCID: PMC6359416 DOI: 10.3390/ijms20020434] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/12/2019] [Accepted: 01/17/2019] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs), including exosomes, are membranous particles released by cells into the extracellular space. They are involved in cell differentiation, tissue homeostasis, and organ remodelling in virtually all tissues, including the central nervous system (CNS). They are secreted by a range of cell types and via blood reaching other cells whose functioning they can modify because they transport and deliver active molecules, such as proteins of various types and functions, lipids, DNA, and miRNAs. Since they are relatively easy to isolate, exosomes can be characterized, and their composition elucidated and manipulated by bioengineering techniques. Consequently, exosomes appear as promising theranostics elements, applicable to accurately diagnosing pathological conditions, and assessing prognosis and response to treatment in a variety of disorders. Likewise, the characteristics and manageability of exosomes make them potential candidates for delivering selected molecules, e.g., therapeutic drugs, to specific target tissues. All these possible applications are pertinent to research in neurophysiology, as well as to the study of neurological disorders, including CNS tumors, and autoimmune and neurodegenerative diseases. In this brief review, we discuss what is known about the role and potential future applications of exosomes in the nervous system and its diseases, focusing on cell–cell communication in physiology and pathology.
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96
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Exosome-Mediated Signaling in Epithelial to Mesenchymal Transition and Tumor Progression. J Clin Med 2018; 8:jcm8010026. [PMID: 30591649 PMCID: PMC6352067 DOI: 10.3390/jcm8010026] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/18/2018] [Accepted: 12/21/2018] [Indexed: 12/11/2022] Open
Abstract
Growing evidence points to exosomes as key mediators of cell⁻cell communication, by transferring their specific cargo (e.g., proteins, lipids, DNA and RNA molecules) from producing to receiving cells. In cancer, the regulation of the exosome-mediated intercellular communication may be reshaped, inducing relevant changes in gene expression of recipient cells in addition to microenvironment alterations. Notably, exosomes may deliver signals able to induce the transdifferentiation process known as Epithelial-to-Mesenchymal Transition (EMT). In this review, we summarize recent findings on the role of exosomes in tumor progression and EMT, highlighting current knowledge on exosome-mediated intercellular communication in tumor-niche establishment, migration, invasion, and metastasis processes. This body of evidence suggests the relevance of taking into account exosome-mediated signaling and its multifaceted aspects to develop innovative anti-tumoral therapeutic approaches.
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97
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Osorio-Querejeta I, Alberro A, Muñoz-Culla M, Mäger I, Otaegui D. Therapeutic Potential of Extracellular Vesicles for Demyelinating Diseases; Challenges and Opportunities. Front Mol Neurosci 2018; 11:434. [PMID: 30532691 PMCID: PMC6265410 DOI: 10.3389/fnmol.2018.00434] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 11/08/2018] [Indexed: 12/13/2022] Open
Abstract
Multiple Sclerosis is a demyelinating disease of the central nervous system for which no remyelination therapy is available and alternative strategies are being tested. Extracellular vesicles (EVs) have emerged as players in physiological and pathological processes and are being proposed as therapeutic targets and mediators. More concretely, EVs have shown to be involved in myelination related processes such as axon-oligodendrocyte communication or oligodendrocyte precursor cell migration. In addition, EVs have been shown to carry genetic material and small compounds, and to be able to cross the Blood Brain Barrier. This scenario led scientists to test the ability of EVs as myelin regeneration promoters in demyelinating diseases. In this review we will address the use of EVs as remyelination promoters and the challenges and opportunities of this therapy will be discussed.
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Affiliation(s)
- Iñaki Osorio-Querejeta
- Multiple Sclerosis Unit, Biodonostia Health Research Institute, San Sebastian, Spain.,Spanish Network of Multiple Sclerosis, Barcelona, Spain
| | - Ainhoa Alberro
- Multiple Sclerosis Unit, Biodonostia Health Research Institute, San Sebastian, Spain
| | - Maider Muñoz-Culla
- Multiple Sclerosis Unit, Biodonostia Health Research Institute, San Sebastian, Spain.,Spanish Network of Multiple Sclerosis, Barcelona, Spain
| | - Imre Mäger
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.,Institute of Technology, University of Tartu, Tartu, Estonia
| | - David Otaegui
- Multiple Sclerosis Unit, Biodonostia Health Research Institute, San Sebastian, Spain.,Spanish Network of Multiple Sclerosis, Barcelona, Spain
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98
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Blonda M, Amoruso A, Martino T, Avolio C. New Insights Into Immune Cell-Derived Extracellular Vesicles in Multiple Sclerosis. Front Neurol 2018; 9:604. [PMID: 30150969 PMCID: PMC6099084 DOI: 10.3389/fneur.2018.00604] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 07/06/2018] [Indexed: 12/11/2022] Open
Abstract
Extracellular vesicles (EVs) are small vesicles including microvesicles and exosomes which differ in their distinct size, density, biogenesis, and content. Until recently, EVs were considered as simply scrap products. Nowadays, they are engendering huge interest and their shedding plays a well-recognized role in intercellular communication, not only participating in many physiological processes, but also suspected of being involved in the pathogenesis of many diseases. The present review aims to summarize the latest updates on immune cell-derived EVs, focusing on the current status of knowledge in Multiple Sclerosis. Significant progress has been made on their physical and biological characterization even though many aspects remain unclear and need to be addressed. However, it is worth further investigating in order to deepen the knowledge of this unexplored and fascinating field that could lead to intriguing findings in the evaluation of EVs as biomarkers in monitoring the course of diseases and the response to treatments.
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Affiliation(s)
- Maria Blonda
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Antonella Amoruso
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Tommaso Martino
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Carlo Avolio
- Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
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99
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MSC exosome works through a protein-based mechanism of action. Biochem Soc Trans 2018; 46:843-853. [PMID: 29986939 PMCID: PMC6103455 DOI: 10.1042/bst20180079] [Citation(s) in RCA: 244] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/24/2018] [Accepted: 05/29/2018] [Indexed: 02/07/2023]
Abstract
Mesenchymal stem cell (MSC) exosome specifically defines the 50–200 nm vesicles that are secreted into the extracellular space when multivesicular bodies in the MSC fuse with the plasma membrane. However, the exosome is just one of several 50–200 nm extracellular vesicles (EVs) known to be secreted by cells. Nevertheless, the term ‘MSC exosome’ is often used to describe populations of 50–200 nm EVs that are prepared from culture medium conditioned by MSCs on the basis that these populations collectively exhibited typical exosome-associated proteins such as endosomal proteins, TSG101 and Alix, and tetraspanin proteins, CD9, CD63 and CD81. They also carry a rich diverse RNA cargo. MSC exosomes are increasingly implicated as the mediator of many of the MSC-associated therapeutic potencies. They elicit therapeutic activity by delivering their cargo of potentially therapeutic proteins and RNAs to the recipient cells. The therapeutic potency of MSC exosomes is usually rationalized on the presence of a biologically relevant protein or RNA in the MSC exosome. In the present paper, we expanded this rationale beyond a physical presence to include biologically relevant concentration, biochemical functionality and the potential to elicit an appropriate timely biochemical response. Based on these, we propose that MSC exosomes most probably work through the protein rather than the RNA.
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100
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Bucan V, Vaslaitis D, Peck CT, Strauß S, Vogt PM, Radtke C. Effect of Exosomes from Rat Adipose-Derived Mesenchymal Stem Cells on Neurite Outgrowth and Sciatic Nerve Regeneration After Crush Injury. Mol Neurobiol 2018; 56:1812-1824. [PMID: 29931510 PMCID: PMC6394792 DOI: 10.1007/s12035-018-1172-z] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 06/01/2018] [Indexed: 12/29/2022]
Abstract
Peripheral nerve injury requires optimal conditions in both macro-environment and microenvironment for promotion of axonal regeneration. However, most repair strategies of traumatic peripheral nerve injury often lead to dissatisfying results in clinical outcome. Though various strategies have been carried out to improve the macro-environment, the underlying molecular mechanism of axon regeneration in the microenvironment provided by nerve conduit remains unclear. In this study, we evaluate the effects of from adipose-derived mesenchymal stem cells (adMSCs) originating exosomes with respect to sciatic nerve regeneration and neurite growth. Molecular and immunohistochemical techniques were used to investigate the presence of characteristic exosome markers. A co-culture system was established to determine the effect of exosomes on neurite elongation in vitro. The in vivo walking behaviour of rats was evaluated by footprint analysis, and the nerve regeneration was assessed by immunocytochemistry. adMSCs secrete nano-vesicles known as exosomes, which increase neurite outgrowth in vitro and enhance regeneration after sciatic nerve injury in vivo. Furthermore, we showed the presence of neural growth factors transcripts in adMSC exosomes for the first time. Our results demonstrate that exosomes, constitutively produced by adMSCs, are involved in peripheral nerve regeneration and have the potential to be utilised as a therapeutic tool for effective tissue-engineered nerves.
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Affiliation(s)
- Vesna Bucan
- Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany. .,Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Feodor-Lynen Str. 21, Hannover, Germany.
| | - Desiree Vaslaitis
- Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.,Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Feodor-Lynen Str. 21, Hannover, Germany
| | - Claas-Tido Peck
- Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.,Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Feodor-Lynen Str. 21, Hannover, Germany
| | - Sarah Strauß
- Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.,Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Feodor-Lynen Str. 21, Hannover, Germany
| | - Peter M Vogt
- Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.,Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Feodor-Lynen Str. 21, Hannover, Germany
| | - Christine Radtke
- Department of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.,Department of Plastic and Reconstructive Surgery, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
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