51
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Kogure A, Kosaka N, Ochiya T. Cross-talk between cancer cells and their neighbors via miRNA in extracellular vesicles: an emerging player in cancer metastasis. J Biomed Sci 2019; 26:7. [PMID: 30634952 PMCID: PMC6330499 DOI: 10.1186/s12929-019-0500-6] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 01/08/2019] [Indexed: 01/20/2023] Open
Abstract
Cancer metastasis is the major cause of mortality in cancer cases and is responsible for cancer deaths. It is known that cancer cells communicate with surrounding microenvironmental cells, such as fibroblast cells, immune cells, and endothelial cells, to create a cancer microenvironment for their progression. Extracellular vesicles (EVs) are small vesicles that can be secreted by most types of cells and play an important role in cell-to-cell communications via transferring bioactive cargos, including variable RNAs, such as microRNAs (miRNAs), to recipient cells. miRNAs are a class of small noncoding RNAs that posttranscriptionally regulate gene expression. The transfer of them to recipient cells influences the metastatic process of primary tumors. In this review, we summarize the function of miRNAs packaged in EVs in cancer metastasis and discuss the clinical utility of miRNAs in EVs.
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Affiliation(s)
- Akiko Kogure
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045 Japan
| | - Nobuyoshi Kosaka
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045 Japan
- Department of Translational Research for Extracellular Vesicles, Tokyo Medical University, 6-7-1 Shinjuku, Shinjuku-ku, Tokyo, 160-0023 Japan
| | - Takahiro Ochiya
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045 Japan
- Institute of Medical Science, Tokyo Medical University, 6-7-1 Shinjuku, Shinjuku-ku, Tokyo, 160-0023 Japan
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52
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Cesselli D, Parisse P, Aleksova A, Veneziano C, Cervellin C, Zanello A, Beltrami AP. Extracellular Vesicles: How Drug and Pathology Interfere With Their Biogenesis and Function. Front Physiol 2018; 9:1394. [PMID: 30327618 PMCID: PMC6174233 DOI: 10.3389/fphys.2018.01394] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 09/13/2018] [Indexed: 12/13/2022] Open
Abstract
Extracellular vesicles (EV) are at the center of an intense activity of investigation, both for their possible employment as biomarkers of ongoing pathologic processes and for their broad range of biological activities. EV can promote tissue repair in very different pathologic settings, including hindlimb and myocardial ischemia. Importantly, the exact mode of action of EV is still partly understood, since they may act by modulating growth factors and cytokines, signaling pathways, and by transferring non-coding RNAs to target cells. However, the term EV identifies cell derived, enveloped particles very heterogeneous in size, composition, and biogenesis. Therefore, part of the controversies on the biological effects exerted by EV is a consequence of differences in methods of separation that result in the enrichment of different entities. Since technical challenges still hamper the highly specific sorting of different EV subpopulations, up to now only few investigators have tried to verify differences in the biological effects of specific EV subtypes. This review summarizes the current state of the art on the comprehension of mechanisms involved in EV biogenesis and release, which is a prerequisite for understanding and investigating the impact that pathology and drug therapy may exert on the secretion and composition of EV. Finally, we described both the mechanism involved in the modulation of EV secretion by drugs commonly used in patients affected by heart failure, and how pathophysiological mechanisms involved in heart disease modify EV secretion.
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Affiliation(s)
| | | | - Aneta Aleksova
- Cardiovascular Department, Azienda Sanitaria Universitaria Integrata di Trieste - University of Trieste, Trieste, Italy
| | | | | | - Andrea Zanello
- Department of Medicine, University of Udine, Udine, Italy
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53
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Jabalee J, Towle R, Garnis C. The Role of Extracellular Vesicles in Cancer: Cargo, Function, and Therapeutic Implications. Cells 2018; 7:cells7080093. [PMID: 30071693 PMCID: PMC6115997 DOI: 10.3390/cells7080093] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 07/27/2018] [Accepted: 07/29/2018] [Indexed: 12/21/2022] Open
Abstract
Extracellular vesicles (EVs) are a heterogeneous collection of membrane-bound structures that play key roles in intercellular communication. EVs are potent regulators of tumorigenesis and function largely via the shuttling of cargo molecules (RNA, DNA, protein, etc.) among cancer cells and the cells of the tumor stroma. EV-based crosstalk can promote proliferation, shape the tumor microenvironment, enhance metastasis, and allow tumor cells to evade immune destruction. In many cases these functions have been linked to the presence of specific cargo molecules. Herein we will review various types of EV cargo molecule and their functional impacts in the context of oncology.
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Affiliation(s)
- James Jabalee
- Department of Integrative Oncology, British Columbia Cancer Research Center, Vancouver V5Z 1L3, BC, Canada.
| | - Rebecca Towle
- Department of Integrative Oncology, British Columbia Cancer Research Center, Vancouver V5Z 1L3, BC, Canada.
| | - Cathie Garnis
- Department of Integrative Oncology, British Columbia Cancer Research Center, Vancouver V5Z 1L3, BC, Canada.
- Division of Otolaryngology, Department of Surgery, University of British Columbia, Vancouver V6T 1Z4, BC, Canada.
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54
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Rentero C, Blanco-Muñoz P, Meneses-Salas E, Grewal T, Enrich C. Annexins-Coordinators of Cholesterol Homeostasis in Endocytic Pathways. Int J Mol Sci 2018; 19:E1444. [PMID: 29757220 PMCID: PMC5983649 DOI: 10.3390/ijms19051444] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 02/07/2023] Open
Abstract
The spatiotemporal regulation of calcium (Ca2+) storage in late endosomes (LE) and lysosomes (Lys) is increasingly recognized to influence a variety of membrane trafficking events, including endocytosis, exocytosis, and autophagy. Alterations in Ca2+ homeostasis within the LE/Lys compartment are implicated in human diseases, ranging from lysosomal storage diseases (LSDs) to neurodegeneration and cancer, and they correlate with changes in the membrane binding behaviour of Ca2+-binding proteins. This also includes Annexins (AnxA), which is a family of Ca2+-binding proteins participating in membrane traffic and tethering, microdomain organization, cytoskeleton interactions, Ca2+ signalling, and LE/Lys positioning. Although our knowledge regarding the way Annexins contribute to LE/Lys functions is still incomplete, recruitment of Annexins to LE/Lys is greatly influenced by the availability of Annexin bindings sites, including acidic phospholipids, such as phosphatidylserine (PS) and phosphatidic acid (PA), cholesterol, and phosphatidylinositol (4,5)-bisphosphate (PIP2). Moreover, the cytosolic portion of LE/Lys membrane proteins may also, directly or indirectly, determine the recruitment of Annexins to LE. Strikingly, within LE/Lys, AnxA1, A2, A6, and A8 differentially contribute to cholesterol transport along the endocytic route, in particular, cholesterol transfer between LE and other compartments, positioning Annexins at the centre of major pathways mediating cellular cholesterol homeostasis. Underlying mechanisms include the formation of membrane contact sites (MCS) and intraluminal vesicles (ILV), as well as the modulation of LE-cholesterol transporter activity. In this review, we will summarize the current understanding how Annexins contribute to influence LE/Lys membrane transport and associated functions.
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Affiliation(s)
- Carles Rentero
- Departament de Biomedicina, Unitat de Biologia Cel·lular, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona. 08036 Barcelona. Spain.
| | - Patricia Blanco-Muñoz
- Departament de Biomedicina, Unitat de Biologia Cel·lular, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona. 08036 Barcelona. Spain.
| | - Elsa Meneses-Salas
- Departament de Biomedicina, Unitat de Biologia Cel·lular, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona. 08036 Barcelona. Spain.
| | - Thomas Grewal
- School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia.
| | - Carlos Enrich
- Departament de Biomedicina, Unitat de Biologia Cel·lular, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona. 08036 Barcelona. Spain.
- Centre de Recerca Biomèdica CELLEX, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain.
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55
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Anderson M, Kashanchi F, Jacobson S. Role of Exosomes in Human Retroviral Mediated Disorders. J Neuroimmune Pharmacol 2018; 13:279-291. [PMID: 29656370 DOI: 10.1007/s11481-018-9784-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/15/2018] [Indexed: 02/07/2023]
Abstract
Retroviruses comprise an ancient and varied group of viruses with the unique ability to integrate DNA from an RNA transcript into the genome, a subset of which are able to integrate in humans. The timing of these integrations during human history has dictated whether these viruses have remained exogenous and given rise to various human diseases or have become inseparable from the host genome (endogenous retroviruses). Given the ability of retroviruses to integrate into the host and subsequently co-opt host cellular process for viral propagation, retroviruses have been shown to be closely associated with several cellular processes including exosome formation. Exosomes are 30-150 nm unilamellar extracellular vesicles that originate from intraluminal vesicles (ILVs) that form in the endosomal compartment. Exosomes have been shown to be important in intercellular communication and immune cell function. Almost every cell type studied has been shown to produce these types of vesicles, with the cell type dictating the contents, which include proteins, mRNA, and miRNAs. Importantly, recent evidence has shown that infection by viruses, including retroviruses, alter the contents and subsequent function of produced exosomes. In this review, we will discuss the important retroviruses associated with human health and disease. Furthermore, we will delve into the impact of exosome formation and manipulation by integrated retroviruses on human health, survival, and human retroviral disease pathogenesis.
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Affiliation(s)
- Monique Anderson
- National Institute of Neurological Disorders and Stroke, Neuroimmunology Branch, Viral Immunology Section, National Institutes of Health, Bethesda, MD, 20892, USA. .,Department of Pathology, Molecular and Cellular Basis of Disease Graduate Program, University of Virginia School of Medicine, Charlottesville, VA, 22903, USA.
| | - Fatah Kashanchi
- National Center for Biodefense and Infectious Disease, Laboratory of Molecular Virology, George Mason University, Manassas, VA, 20110, USA
| | - Steven Jacobson
- National Institute of Neurological Disorders and Stroke, Neuroimmunology Branch, Viral Immunology Section, National Institutes of Health, Bethesda, MD, 20892, USA
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56
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Functional Association between Regulatory RNAs and the Annexins. Int J Mol Sci 2018; 19:ijms19020591. [PMID: 29462943 PMCID: PMC5855813 DOI: 10.3390/ijms19020591] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/12/2018] [Accepted: 02/14/2018] [Indexed: 12/17/2022] Open
Abstract
Cells respond to pathophysiological states by activation of stress-induced signalling. Regulatory non-coding microRNAs (miRNAs) often form stable feed-forward loops which ensure prolongation of the signal, contributing to sustained activation. Members of the annexin protein family act as sensors for Ca2+, pH, and lipid second messengers, and regulate various signalling pathways. Recently, annexins were reported to participate in feedback loops, suppressing miRNA synthesis and attenuating stress-induced dysregulation of gene expression. They can directly or indirectly associate with RNAs, and are transferred between the cells in exosomes and shed microvesicles. The ability of annexins to recruit other proteins and miRNAs into exosomes implicates them in control of cell–cell interactions, affecting the adaptive responses and remodelling processes during disease. The studies summarized in this Review point to an emerging role of annexins in influencing the synthesis, localisation, and transfer of regulatory RNAs.
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57
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Iparraguirre L, Muñoz-Culla M, Prada-Luengo I, Castillo-Triviño T, Olascoaga J, Otaegui D. Circular RNA profiling reveals that circular RNAs from ANXA2 can be used as new biomarkers for multiple sclerosis. Hum Mol Genet 2018. [PMID: 28651352 DOI: 10.1093/hmg/ddx243] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Multiple sclerosis is an autoimmune disease, with higher prevalence in women, in whom the immune system is dysregulated. This dysregulation has been shown to correlate with changes in transcriptome expression as well as in gene-expression regulators, such as non-coding RNAs (e.g. microRNAs). Indeed, some of these have been suggested as biomarkers for multiple sclerosis even though few biomarkers have reached the clinical practice. Recently, a novel family of non-coding RNAs, circular RNAs, has emerged as a new player in the complex network of gene-expression regulation. MicroRNA regulation function through a 'sponge system' and a RNA splicing regulation function have been proposed for the circular RNAs. This regulating role together with their high stability in biofluids makes them seemingly good candidates as biomarkers. Given the dysregulation of both protein-coding and non-coding transcriptome that have been reported in multiple sclerosis patients, we hypothesised that circular RNA expression may also be altered. Therefore, we carried out expression profiling of 13.617 circular RNAs in peripheral blood leucocytes from multiple sclerosis patients and healthy controls finding 406 differentially expressed (P-value < 0.05, Fold change > 1.5) and demonstrate after validation that, circ_0005402 and circ_0035560 are underexpressed in multiple sclerosis patients and could be used as biomarkers of the disease.
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Affiliation(s)
- Leire Iparraguirre
- Multiple Sclerosis Unit, Neurosciences Area, Biodonostia Health Research Institute, 20014, San Sebastián, Spain
| | - Maider Muñoz-Culla
- Multiple Sclerosis Unit, Neurosciences Area, Biodonostia Health Research Institute, 20014, San Sebastián, Spain.,Spanish Network of Multiple Sclerosis, 08028, Barcelona, Spain
| | - Iñigo Prada-Luengo
- Multiple Sclerosis Unit, Neurosciences Area, Biodonostia Health Research Institute, 20014, San Sebastián, Spain
| | - Tamara Castillo-Triviño
- Multiple Sclerosis Unit, Neurosciences Area, Biodonostia Health Research Institute, 20014, San Sebastián, Spain.,Spanish Network of Multiple Sclerosis, 08028, Barcelona, Spain.,Neurology Department, Donostia University Hospital, 20014, San Sebastián, Spain
| | - Javier Olascoaga
- Multiple Sclerosis Unit, Neurosciences Area, Biodonostia Health Research Institute, 20014, San Sebastián, Spain.,Spanish Network of Multiple Sclerosis, 08028, Barcelona, Spain.,Neurology Department, Donostia University Hospital, 20014, San Sebastián, Spain
| | - David Otaegui
- Multiple Sclerosis Unit, Neurosciences Area, Biodonostia Health Research Institute, 20014, San Sebastián, Spain.,Spanish Network of Multiple Sclerosis, 08028, Barcelona, Spain
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58
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Chen J, Hu C, Pan P. Extracellular Vesicle MicroRNA Transfer in Lung Diseases. Front Physiol 2017; 8:1028. [PMID: 29311962 PMCID: PMC5732924 DOI: 10.3389/fphys.2017.01028] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 11/28/2017] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRNAs) are single-stranded, small non-coding RNAs that ate involved in the transcriptional and post-transcriptional regulation of gene expression. Recently, miRNAs were demonstrated to be effectively delivered to a target cell or tissue from a host cell via extracellular vesicles (EVs). These EVs can be detected in blood, urine, exhaled breath condensates, bronchoalveolar lavage fluid (BALF), and other fluids. miRNAs are generated by donor cells and then packaged into EVs and delivered with intact functionality. After being delivered to the target cells, they regulate the translation of their target genes and the function of the target cells. Thus, EV transported miRNAs have become a new method for intercellular communication. EV miRNA transfer is well-documented in various pulmonary diseases, such as chronic obstructive pulmonary disease (COPD), asthma, pulmonary hypertension, and acute lung injury (ALI). In this review, we summarize the novel findings of EV miRNA transfer, focusing on the roles of miR-210, miR-200, miR-17, miR-146a, miR-155, and other miRNAs that are transported from primary human bronchial epithelial cells (HBECs), BALF, mesenchymal stem cells, and dendritic cells.
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Affiliation(s)
- Jie Chen
- Department of Respiratory and Critical Care Medicine, Key Site of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China
| | - Chengping Hu
- Department of Respiratory and Critical Care Medicine, Key Site of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China
| | - Pinhua Pan
- Department of Respiratory and Critical Care Medicine, Key Site of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China
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59
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Extracellular microRNAs as messengers in the central and peripheral nervous system. Neuronal Signal 2017; 1:NS20170112. [PMID: 32714581 PMCID: PMC7373247 DOI: 10.1042/ns20170112] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/29/2017] [Accepted: 10/01/2017] [Indexed: 12/20/2022] Open
Abstract
MicroRNAs are small post-transcriptional regulators that play an important role in nervous system development, function and disease. More recently, microRNAs have been detected extracellularly and circulating in blood and other body fluids, where they are protected from degradation by encapsulation in vesicles, such as exosomes, or by association with proteins. These microRNAs are thought to be released from cells selectively through active processes and taken up by specific target cells within the same or in remote tissues where they are able to exert their repressive function. These characteristics make extracellular microRNAs ideal candidates for intercellular communication over short and long distances. This review aims to explore the potential mechanisms underlying microRNA communication within the nervous system and between the nervous system and other tissues. The suggested roles of extracellular microRNAs in the healthy and the diseased nervous system will be reviewed.
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60
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Di Liegro CM, Schiera G, Di Liegro I. Extracellular Vesicle-Associated RNA as a Carrier of Epigenetic Information. Genes (Basel) 2017; 8:genes8100240. [PMID: 28937658 PMCID: PMC5664090 DOI: 10.3390/genes8100240] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/08/2017] [Accepted: 09/20/2017] [Indexed: 12/19/2022] Open
Abstract
Post-transcriptional regulation of messenger RNA (mRNA) metabolism and subcellular localization is of the utmost importance both during development and in cell differentiation. Besides carrying genetic information, mRNAs contain cis-acting signals (zip codes), usually present in their 5'- and 3'-untranslated regions (UTRs). By binding to these signals, trans-acting factors, such as RNA-binding proteins (RBPs), and/or non-coding RNAs (ncRNAs), control mRNA localization, translation and stability. RBPs can also form complexes with non-coding RNAs of different sizes. The release of extracellular vesicles (EVs) is a conserved process that allows both normal and cancer cells to horizontally transfer molecules, and hence properties, to neighboring cells. By interacting with proteins that are specifically sorted to EVs, mRNAs as well as ncRNAs can be transferred from cell to cell. In this review, we discuss the mechanisms underlying the sorting to EVs of different classes of molecules, as well as the role of extracellular RNAs and the associated proteins in altering gene expression in the recipient cells. Importantly, if, on the one hand, RBPs play a critical role in transferring RNAs through EVs, RNA itself could, on the other hand, function as a carrier to transfer proteins (i.e., chromatin modifiers, and transcription factors) that, once transferred, can alter the cell's epigenome.
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Affiliation(s)
- Carlo Maria Di Liegro
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo (UNIPA), I-90128 Palermo, Italy.
| | - Gabriella Schiera
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo (UNIPA), I-90128 Palermo, Italy.
| | - Italia Di Liegro
- Department of Experimental Biomedicine and Clinical Neurosciences (BIONEC), University of Palermo,I-90127 Palermo,Italy.
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61
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Protein phosphorylation and its role in the regulation of Annexin A2 function. Biochim Biophys Acta Gen Subj 2017; 1861:2515-2529. [PMID: 28867585 DOI: 10.1016/j.bbagen.2017.08.024] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 08/17/2017] [Accepted: 08/30/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Annexin A2 (AnxA2) is a multifunctional protein involved in endocytosis, exocytosis, membrane domain organisation, actin remodelling, signal transduction, protein assembly, transcription and mRNA transport, as well as DNA replication and repair. SCOPE OF REVIEW The current knowledge of the role of phosphorylation in the functional regulation of AnxA2 is reviewed. To provide a more comprehensive treatment of this topic, we also address in depth the phosphorylation process in general and discuss its possible conformational effects. Furthermore, we discuss the apparent limitations of the methods used to investigate phosphoproteins, as exemplified by the study of AnxA2. MAJOR CONCLUSIONS AnxA2 is subjected to complex regulation by post-translational modifications affecting its cellular functions, with Ser11, Ser25 and Tyr23 representing important phosphorylation sites. Thus, Ser phosphorylation of AnxA2 is involved in the recruitment and docking of secretory granules, the regulation of its association with S100A10, and sequestration of perinuclear, translationally inactive mRNP complexes. By contrast, Tyr phosphorylation of AnxA2 regulates its role in actin dynamics and increases its association with endosomal compartments. Modification of its three main phosphorylation sites is not sufficient to discriminate between its numerous functions. Thus, fine-tuning of AnxA2 function is mediated by the joint action of several post-translational modifications. GENERAL SIGNIFICANCE AnxA2 participates in malignant cell transformation, and its overexpression and/or phosphorylation is associated with cancer progression and metastasis. Thus, tight regulation of AnxA2 function is an integral aspect of cellular homeostasis. The presence of AnxA2 in cancer cell-derived exosomes, as well as the potential regulation of exosomal AnxA2 by phosphorylation or other PTMs, are topics of great interest.
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62
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Lefebvre FA, Cody NA, Bouvrette LPB, Bergalet J, Wang X, Lécuyer E. CeFra-seq: Systematic mapping of RNA subcellular distribution properties through cell fractionation coupled to deep-sequencing. Methods 2017; 126:138-148. [DOI: 10.1016/j.ymeth.2017.05.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 05/18/2017] [Accepted: 05/21/2017] [Indexed: 12/18/2022] Open
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63
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Effects of Inhibiting VPS4 Support a General Role for ESCRTs in Extracellular Vesicle Biogenesis. Biophys J 2017. [PMID: 28629620 DOI: 10.1016/j.bpj.2017.05.032] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Extracellular vesicles (EVs) are proposed to play important roles in intercellular communication. Two classes of EVs can be distinguished based on their intracellular origin. Exosomes are generated within endosomes and released when these fuse with the plasma membrane, whereas ectosomes bud directly from the plasma membrane. Studies of EV function have been hindered by limited understanding of their biogenesis. Components of the endosomal sorting complex required for transport (ESCRT) machinery play essential roles in topologically equivalent processes at both the endosome and the plasma membrane and are consistently recovered in EVs, but whether they are generally required to produce EVs is still debated. Here, we study the effects of inhibiting the ESCRT-associated AAA+ ATPase VPS4 on EV release from cultured cells using two methods for EV recovery, differential centrifugation and polyethylene glycol precipitation followed by lectin affinity chromatography. We find that inhibiting VPS4 in HEK293 cells decreases release of EV-associated proteins and miRNA as well as the overall number of EV particles. The tetraspanins CD63 and CD9 are among the most frequently monitored EV proteins, but they differ in their subcellular localization, with CD63 primarily in endosomes and CD9 on the plasma membrane. We find that CD63 and CD9 are enriched in separable populations of EVs that are both sensitive to VPS4 inhibition. Serum stimulation increases release of both types of EVs and is also reduced by inhibiting VPS4. Taken together, our data indicate that VPS4 activity is important for generating exosomes and ectosomes, thereby generally implicating the ESCRT machinery in EV biogenesis.
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64
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Collino F, Pomatto M, Bruno S, Lindoso RS, Tapparo M, Sicheng W, Quesenberry P, Camussi G. Exosome and Microvesicle-Enriched Fractions Isolated from Mesenchymal Stem Cells by Gradient Separation Showed Different Molecular Signatures and Functions on Renal Tubular Epithelial Cells. Stem Cell Rev Rep 2017; 13:226-243. [PMID: 28070858 PMCID: PMC5380712 DOI: 10.1007/s12015-016-9713-1] [Citation(s) in RCA: 122] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Several studies have suggested that extracellular vesicles (EVs) released from mesenchymal stem cells (MSCs) may mediate MSC paracrine action on kidney regeneration. This activity has been, at least in part, ascribed to the transfer of proteins/transcription factors and different RNA species. Information on the RNA/protein content of different MSC EV subpopulations and the correlation with their biological activity is currently incomplete. The aim of this study was to evaluate the molecular composition and the functional properties on renal target cells of MSC EV sub-populations separated by gradient floatation. The results demonstrated heterogeneity in quantity and composition of MSC EVs. Two peaks of diameter were observed (90-110 and 170-190 nm). The distribution of exosomal markers and miRNAs evaluated in the twelve gradient fractions showed an enrichment in fractions with a flotation density of 1.08-1.14 g/mL. Based on this observation, we evaluated the biological activity on renal cell proliferation and apoptosis resistance of low (CF1), medium (CF2) and high (CF3) floatation density fractions. EVs derived from all fractions, were internalized by renal cells, CF1 and CF2 but not CF3 fraction stimulated significant cell proliferation. CF2 also inhibited apoptosis on renal tubular cells submitted to ischemia-reperfusion injury. Comparative miRNomic and proteomic profiles reveal a cluster of miRNAs and proteins common to all three fractions and an enrichment of selected molecules related to renal regeneration in CF2 fraction. In conclusion, the CF2 fraction enriched in exosomal markers was the most active on renal tubular cell proliferation and protection from apoptosis.
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Affiliation(s)
- Federica Collino
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Department of Medical Sciences and 2i3T, University of Torino, Torino, Italy
| | - Margherita Pomatto
- Department of Medical Sciences and 2i3T, University of Torino, Torino, Italy
| | - Stefania Bruno
- Department of Molecular Biotechnology and Healthy Science, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Rafael Soares Lindoso
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marta Tapparo
- Department of Medical Sciences and 2i3T, University of Torino, Torino, Italy
| | - Wen Sicheng
- Division of Hematology/Oncology, Rhode Island Hospital, Brown University, Providence, RI, USA
| | - Peter Quesenberry
- Division of Hematology/Oncology, Rhode Island Hospital, Brown University, Providence, RI, USA
| | - Giovanni Camussi
- Department of Medical Sciences and 2i3T, University of Torino, Torino, Italy.
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65
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Lefebvre FA, Lécuyer E. Small Luggage for a Long Journey: Transfer of Vesicle-Enclosed Small RNA in Interspecies Communication. Front Microbiol 2017; 8:377. [PMID: 28360889 PMCID: PMC5352665 DOI: 10.3389/fmicb.2017.00377] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 02/23/2017] [Indexed: 12/25/2022] Open
Abstract
In the evolutionary arms race, symbionts have evolved means to modulate each other's physiology, oftentimes through the dissemination of biological signals. Beyond small molecules and proteins, recent evidence shows that small RNA molecules are transferred between organisms and transmit functional RNA interference signals across biological species. However, the mechanisms through which specific RNAs involved in cross-species communication are sorted for secretion and protected from degradation in the environment remain largely enigmatic. Over the last decade, extracellular vesicles have emerged as prominent vehicles of biological signals. They can stabilize specific RNA transcripts in biological fluids and selectively deliver them to recipient cells. Here, we review examples of small RNA transfers between plants and bacterial, fungal, and animal symbionts. We also discuss the transmission of RNA interference signals from intestinal cells to populations of the gut microbiota, along with its roles in intestinal homeostasis. We suggest that extracellular vesicles may contribute to inter-species crosstalk mediated by small RNA. We review the mechanisms of RNA sorting to extracellular vesicles and evaluate their relevance in cross-species communication by discussing conservation, stability, stoichiometry, and co-occurrence of vesicles with alternative communication vehicles.
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Affiliation(s)
- Fabio A. Lefebvre
- Institut de Recherches Cliniques de Montréal (IRCM), RNA Biology DepartmentMontreal, QC, Canada
- Département de Biochimie, Université de MontréalMontreal, QC, Canada
| | - Eric Lécuyer
- Institut de Recherches Cliniques de Montréal (IRCM), RNA Biology DepartmentMontreal, QC, Canada
- Département de Biochimie, Université de MontréalMontreal, QC, Canada
- Divison of Experimental Medicine, McGill UniversityMontreal, QC, Canada
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66
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Mateescu B, Kowal EJK, van Balkom BWM, Bartel S, Bhattacharyya SN, Buzás EI, Buck AH, de Candia P, Chow FWN, Das S, Driedonks TAP, Fernández-Messina L, Haderk F, Hill AF, Jones JC, Van Keuren-Jensen KR, Lai CP, Lässer C, Liegro ID, Lunavat TR, Lorenowicz MJ, Maas SLN, Mäger I, Mittelbrunn M, Momma S, Mukherjee K, Nawaz M, Pegtel DM, Pfaffl MW, Schiffelers RM, Tahara H, Théry C, Tosar JP, Wauben MHM, Witwer KW, Nolte-'t Hoen ENM. Obstacles and opportunities in the functional analysis of extracellular vesicle RNA - an ISEV position paper. J Extracell Vesicles 2017; 6:1286095. [PMID: 28326170 PMCID: PMC5345583 DOI: 10.1080/20013078.2017.1286095] [Citation(s) in RCA: 525] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/25/2016] [Indexed: 02/07/2023] Open
Abstract
The release of RNA-containing extracellular vesicles (EV) into the extracellular milieu has been demonstrated in a multitude of different in vitro cell systems and in a variety of body fluids. RNA-containing EV are in the limelight for their capacity to communicate genetically encoded messages to other cells, their suitability as candidate biomarkers for diseases, and their use as therapeutic agents. Although EV-RNA has attracted enormous interest from basic researchers, clinicians, and industry, we currently have limited knowledge on which mechanisms drive and regulate RNA incorporation into EV and on how RNA-encoded messages affect signalling processes in EV-targeted cells. Moreover, EV-RNA research faces various technical challenges, such as standardisation of EV isolation methods, optimisation of methodologies to isolate and characterise minute quantities of RNA found in EV, and development of approaches to demonstrate functional transfer of EV-RNA in vivo. These topics were discussed at the 2015 EV-RNA workshop of the International Society for Extracellular Vesicles. This position paper was written by the participants of the workshop not only to give an overview of the current state of knowledge in the field, but also to clarify that our incomplete knowledge – of the nature of EV(-RNA)s and of how to effectively and reliably study them – currently prohibits the implementation of gold standards in EV-RNA research. In addition, this paper creates awareness of possibilities and limitations of currently used strategies to investigate EV-RNA and calls for caution in interpretation of the obtained data.
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Affiliation(s)
- Bogdan Mateescu
- Department of Biology, Swiss Federal Institute of Technology Zurich (ETH Zürich) , Zurich , Switzerland
| | - Emma J K Kowal
- Department of Biology, Massachusetts Institute of Technology , Cambridge , MA , USA
| | - Bas W M van Balkom
- Department of Nephrology and Hypertension, UMC Utrecht , Utrecht , the Netherlands
| | - Sabine Bartel
- Experimental Asthma Research, Priority Area Asthma & Allergy, Research Center Borstel, Leibniz-Center for Medicine and Biosciences, Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL) , Borstel , Germany
| | - Suvendra N Bhattacharyya
- Department of Science and Technology, CSIR-Indian Institute of Chemical Biology , Kolkata , India
| | - Edit I Buzás
- Department of Genetics, Cell- and Immunobiology, Semmelweis University , Budapest , Hungary
| | - Amy H Buck
- Institute of Immunology and Infection Research, Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh , Edinburgh , UK
| | | | - Franklin W N Chow
- Institute of Immunology and Infection Research, Centre for Immunity, Infection and Evolution, School of Biological Sciences, University of Edinburgh , Edinburgh , UK
| | - Saumya Das
- Cardiovascular Research Institute, Massachusetts General Hospital , Boston , MA , USA
| | - Tom A P Driedonks
- Department of Biochemistry & Cell Biology, Faculty of Veterinary Medicine, Utrecht University , Utrecht , the Netherlands
| | | | - Franziska Haderk
- Department of Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Medicine, Helen Diller Family Comprehensive Cancer Center, UC San Francisco, San Francisco, CA, USA
| | - Andrew F Hill
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University , Bundoora , Australia
| | - Jennifer C Jones
- Molecular Immunogenetics & Vaccine Research Section, Vaccine Branch, CCR, NCI , Bethesda , MD , USA
| | | | - Charles P Lai
- Institute of Biomedical Engineering, National Tsing Hua University , Hsinchu , Taiwan
| | - Cecilia Lässer
- Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and NeuroDiscovery Center, Harvard Medical School, Boston, MA, USA; Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Italia di Liegro
- Department of Experimental Biomedicine and Clinical Neurosciences (BIONEC), University of Palermo , Palermo , Italy
| | - Taral R Lunavat
- Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and NeuroDiscovery Center, Harvard Medical School, Boston, MA, USA; Krefting Research Centre, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Magdalena J Lorenowicz
- Center for Molecular Medicine, University Medical Center Utrecht & Regenerative Medicine Center , Utrecht , the Netherlands
| | - Sybren L N Maas
- Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and NeuroDiscovery Center, Harvard Medical School , Boston , MA , USA
| | - Imre Mäger
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK; Institute of Technology, University of Tartu, Tartu, Estonia
| | - Maria Mittelbrunn
- Instituto de Investigación del Hospital 12 de Octubre , Madrid , Spain
| | - Stefan Momma
- Institute of Neurology (Edinger Institute), Frankfurt University Medical School , Frankfurt am Main , Germany
| | - Kamalika Mukherjee
- Department of Science and Technology, CSIR-Indian Institute of Chemical Biology , Kolkata , India
| | - Muhammed Nawaz
- Department of Pathology and Forensic Medicine, Ribeirão Preto School of Medicine, University of Sao Paulo , Sao Paulo , Brazil
| | - D Michiel Pegtel
- Department of Pathology, Exosomes Research Group, VU University Medical Center , Amsterdam , the Netherlands
| | - Michael W Pfaffl
- Animal Physiology and Immunology, School of Life Sciences, Technical University of Munich (TUM) Weihenstephan , Freising , Germany
| | - Raymond M Schiffelers
- Laboratory Clinical Chemistry & Haematology, University Medical Center Utrecht , Utrecht , the Netherlands
| | - Hidetoshi Tahara
- Department of Cellular and Molecular Biology, Institute of Biomedical & Health Sciences, Hiroshima University , Hiroshima , Japan
| | - Clotilde Théry
- Institut Curie, PSL Research University, INSERM U932 , Paris , France
| | - Juan Pablo Tosar
- Functional Genomics Unit, Institut Pasteur de Montevideo, Nuclear Research Center, Faculty of Science, Universidad de la República , Montevideo , Uruguay
| | - Marca H M Wauben
- Department of Biochemistry & Cell Biology, Faculty of Veterinary Medicine, Utrecht University , Utrecht , the Netherlands
| | - Kenneth W Witwer
- Department of Molecular and Comparative Pathobiology and Department of Neurology, The Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Esther N M Nolte-'t Hoen
- Department of Biochemistry & Cell Biology, Faculty of Veterinary Medicine, Utrecht University , Utrecht , the Netherlands
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67
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Somiya M, Yoshioka Y, Ochiya T. Drug delivery application of extracellular vesicles; insight into production, drug loading, targeting, and pharmacokinetics. AIMS BIOENGINEERING 2017. [DOI: 10.3934/bioeng.2017.1.73] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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68
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Grindheim AK, Vedeler A. Extracellular vesicles released from cells exposed to reactive oxygen species increase annexin A2 expression and survival of target cells exposed to the same conditions. Commun Integr Biol 2016; 9:e1191715. [PMID: 27574537 PMCID: PMC4988444 DOI: 10.1080/19420889.2016.1191715] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/13/2016] [Accepted: 05/13/2016] [Indexed: 01/09/2023] Open
Abstract
Annexin A2 (AnxA2) is present in multiple cellular compartments and interacts with numerous ligands including calcium, proteins, cholesterol, negatively charged phospholipids and RNA. These interactions are tightly regulated by its post-translational modifications. The levels of AnxA2 and its Tyr23 phosphorylated form (pTyr23AnxA2) are increased in many cancers and the protein is involved in malignant cell transformation, metastasis and angiogenesis. Our previous studies of rat pheochromocytoma (PC12) cells showed that reactive oxygen species (ROS) induce rapid, simultaneous and transient dephosphorylation of nuclear AnxA2, most likely associating with PML bodies, while AnxA2 associated with F-actin at the cell cortex undergoes Tyr23 phosphorylation. The pTyr23AnxA2 in the periphery of the cells is incorporated into intraluminal vesicles of multivesicular endosomes and subsequently released to the extracellular space. We show here that extracellular vesicles (EVs) from cells exposed to ROS prime untreated PC12 cells to better tolerate subsequent oxidative stress, thus enhancing their survival. There is an increase in the levels of pTyr23AnxA2 and AnxA2 in the primed cells, suggesting that AnxA2 is involved in their survival. This increase is due to an upregulation of AnxA2 expression both at the transcriptional and translational levels after relatively short term (2 h) exposure to primed EVs.
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Affiliation(s)
- Ann Kari Grindheim
- Department of Biomedicine, University of Bergen, Bergen, Norway; Molecular Imaging Center (MIC), University of Bergen, Bergen, Norway
| | - Anni Vedeler
- Department of Biomedicine, University of Bergen , Bergen, Norway
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69
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Endzeliņš E, Melne V, Kalniņa Z, Lietuvietis V, Riekstiņa U, Llorente A, Linē A. Diagnostic, prognostic and predictive value of cell-free miRNAs in prostate cancer: a systematic review. Mol Cancer 2016; 15:41. [PMID: 27189160 PMCID: PMC4870749 DOI: 10.1186/s12943-016-0523-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 05/12/2016] [Indexed: 01/01/2023] Open
Abstract
Prostate cancer, the second most frequently diagnosed cancer in males worldwide, is estimated to be diagnosed in 1.1 million men per year. Introduction of PSA testing substantially improved early detection of prostate cancer, however it also led to overdiagnosis and subsequent overtreatment of patients with an indolent disease. Treatment outcome and management of prostate cancer could be improved by the development of non-invasive biomarker assays that aid in increasing the sensitivity and specificity of prostate cancer screening, help to distinguish aggressive from indolent disease and guide therapeutic decisions. Prostate cancer cells release miRNAs into the bloodstream, where they exist incorporated into ribonucleoprotein complexes or extracellular vesicles. Later, cell-free miRNAs have been found in various other biofluids. The initial RNA sequencing studies suggested that most of the circulating cell-free miRNAs in healthy individuals are derived from blood cells, while specific disease-associated miRNA signatures may appear in the circulation of patients affected with various diseases, including cancer. This raised a hope that cell-free miRNAs may serve as non-invasive biomarkers for prostate cancer. Indeed, a number of cell-free miRNAs that potentially may serve as diagnostic, prognostic or predictive biomarkers have been discovered in blood or other biofluids of prostate cancer patients and need to be validated in appropriately designed longitudinal studies and clinical trials. In this review, we systematically summarise studies investigating cell-free miRNAs in biofluids of prostate cancer patients and discuss the utility of the identified biomarkers in various clinical scenarios. Furthermore, we discuss the possible mechanisms of miRNA release into biofluids and outline the biological questions and technical challenges that have arisen from these studies.
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Affiliation(s)
- Edgars Endzeliņš
- Latvian Biomedical Research and Study Centre, Ratsupites Str 1, k-1, LV-1067, Riga, Latvia
| | - Vita Melne
- Latvian Biomedical Research and Study Centre, Ratsupites Str 1, k-1, LV-1067, Riga, Latvia.,Riga Stradiņš University, Dzirciema Str 16, Riga, LV-1007, Latvia
| | - Zane Kalniņa
- Latvian Biomedical Research and Study Centre, Ratsupites Str 1, k-1, LV-1067, Riga, Latvia
| | - Vilnis Lietuvietis
- Latvian Biomedical Research and Study Centre, Ratsupites Str 1, k-1, LV-1067, Riga, Latvia.,Riga Stradiņš University, Dzirciema Str 16, Riga, LV-1007, Latvia
| | - Una Riekstiņa
- Faculty of Medicine, University of Latvia, 19 Raina blvd., Riga, LV-1586, Latvia
| | - Alicia Llorente
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital-The Norwegian Radium Hospital, 0379, Oslo, Norway
| | - Aija Linē
- Latvian Biomedical Research and Study Centre, Ratsupites Str 1, k-1, LV-1067, Riga, Latvia.
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70
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Hung ME, Leonard JN. A platform for actively loading cargo RNA to elucidate limiting steps in EV-mediated delivery. J Extracell Vesicles 2016; 5:31027. [PMID: 27189348 PMCID: PMC4870355 DOI: 10.3402/jev.v5.31027] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/07/2016] [Accepted: 04/19/2016] [Indexed: 12/15/2022] Open
Abstract
Extracellular vesicles (EVs) mediate intercellular communication through transfer of RNA and protein between cells. Thus, understanding how cargo molecules are loaded and delivered by EVs is of central importance for elucidating the biological roles of EVs and developing EV-based therapeutics. While some motifs modulating the loading of biomolecular cargo into EVs have been elucidated, the general rules governing cargo loading and delivery remain poorly understood. To investigate how general biophysical properties impact loading and delivery of RNA by EVs, we developed a platform for actively loading engineered cargo RNAs into EVs. In our system, the MS2 bacteriophage coat protein was fused to EV-associated proteins, and the cognate MS2 stem loop was engineered into cargo RNAs. Using this Targeted and Modular EV Loading (TAMEL) approach, we identified a configuration that substantially enhanced cargo RNA loading (up to 6-fold) into EVs. When applied to vesicles expressing the vesicular stomatitis virus glycoprotein (VSVG) – gesicles – we observed a 40-fold enrichment in cargo RNA loading. While active loading of mRNA-length (>1.5 kb) cargo molecules was possible, active loading was much more efficient for smaller (~0.5 kb) RNA molecules. We next leveraged the TAMEL platform to elucidate the limiting steps in EV-mediated delivery of mRNA and protein to prostate cancer cells, as a model system. Overall, most cargo was rapidly degraded in recipient cells, despite high EV-loading efficiencies and substantial EV uptake by recipient cells. While gesicles were efficiently internalized via a VSVG-mediated mechanism, most cargo molecules were rapidly degraded. Thus, in this model system, inefficient endosomal fusion or escape likely represents a limiting barrier to EV-mediated transfer. Altogether, the TAMEL platform enabled a comparative analysis elucidating a key opportunity for enhancing EV-mediated delivery to prostate cancer cells, and this technology should be of general utility for investigations and applications of EV-mediated transfer in other systems.
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Affiliation(s)
- Michelle E Hung
- Interdisciplinary Biological Sciences Program, Northwestern University, Evanston, IL, USA
| | - Joshua N Leonard
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA.,Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA.,Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Evanston, IL, USA;
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