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O'Brien K, Breyne K, Ughetto S, Laurent LC, Breakefield XO. RNA delivery by extracellular vesicles in mammalian cells and its applications. Nat Rev Mol Cell Biol 2020; 21:585-606. [PMID: 32457507 PMCID: PMC7249041 DOI: 10.1038/s41580-020-0251-y] [Citation(s) in RCA: 982] [Impact Index Per Article: 245.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2020] [Indexed: 02/06/2023]
Abstract
The term 'extracellular vesicles' refers to a heterogeneous population of vesicular bodies of cellular origin that derive either from the endosomal compartment (exosomes) or as a result of shedding from the plasma membrane (microvesicles, oncosomes and apoptotic bodies). Extracellular vesicles carry a variety of cargo, including RNAs, proteins, lipids and DNA, which can be taken up by other cells, both in the direct vicinity of the source cell and at distant sites in the body via biofluids, and elicit a variety of phenotypic responses. Owing to their unique biology and roles in cell-cell communication, extracellular vesicles have attracted strong interest, which is further enhanced by their potential clinical utility. Because extracellular vesicles derive their cargo from the contents of the cells that produce them, they are attractive sources of biomarkers for a variety of diseases. Furthermore, studies demonstrating phenotypic effects of specific extracellular vesicle-associated cargo on target cells have stoked interest in extracellular vesicles as therapeutic vehicles. There is particularly strong evidence that the RNA cargo of extracellular vesicles can alter recipient cell gene expression and function. During the past decade, extracellular vesicles and their RNA cargo have become better defined, but many aspects of extracellular vesicle biology remain to be elucidated. These include selective cargo loading resulting in substantial differences between the composition of extracellular vesicles and source cells; heterogeneity in extracellular vesicle size and composition; and undefined mechanisms for the uptake of extracellular vesicles into recipient cells and the fates of their cargo. Further progress in unravelling the basic mechanisms of extracellular vesicle biogenesis, transport, and cargo delivery and function is needed for successful clinical implementation. This Review focuses on the current state of knowledge pertaining to packaging, transport and function of RNAs in extracellular vesicles and outlines the progress made thus far towards their clinical applications.
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Affiliation(s)
- Killian O'Brien
- Molecular Neurogenetics Unit, Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Koen Breyne
- Molecular Neurogenetics Unit, Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Stefano Ughetto
- Molecular Neurogenetics Unit, Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
- Department of Oncology, University of Turin, Candiolo, Italy
| | - Louise C Laurent
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Diego, La Jolla, CA, USA.
- Sanford Consortium for Regenerative Medicine, University of California, San Diego, La Jolla, CA, USA.
| | - Xandra O Breakefield
- Molecular Neurogenetics Unit, Department of Neurology and Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
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Qian X, An N, Ren Y, Yang C, Zhang X, Li L. Immunosuppressive Effects of Mesenchymal Stem Cells-derived Exosomes. Stem Cell Rev Rep 2020; 17:411-427. [PMID: 32935222 DOI: 10.1007/s12015-020-10040-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mesenchymal stem cells (MSCs) have become important seed cells in therapy because of their immunosuppressive function and anti-inflammatory effects. MSCs exert immunosuppressive effects through direct contact or paracrine action. The paracrine functions of MSCs are at least partially mediated by exosomes, which are membrane vesicles, carrying abundant proteins, nucleic acids and other active molecules. MSC-exos have heterogeneity. The exosomes from different donors, tissues generations of MSCs carry different bioactive molecules. These cargos are transferred to recipient cells by endocytosis or binding to proteins on the receptor surface to mediate intercellular communication between different cell types and affect the functions of the recipient cells. Exosomes play an important role in the regulation of the immune system. Exosomes derived from MSCs (MSC-exos) carry immunomodulatory effectors or transmit active signal molecules to regulate the biological activities of immune cells and thus mediating immune suppression, especially on macrophages and T cells. Mitochondria and autophagy-related pathways are also associated with MSC-exos immunosuppressive effects. Graphical Abstract.
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Affiliation(s)
- Xiaoli Qian
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Nan An
- College of Clinical Medicine, Jilin University, Changchun, China
| | - Yifan Ren
- College of Clinical Medicine, Jilin University, Changchun, China
| | - Chenxin Yang
- College of Clinical Medicine, Jilin University, Changchun, China
| | - Xiaoling Zhang
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Institute of Immunology, The First Hospital of Jilin University, Changchun, China.
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, China.
| | - Lisha Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, China.
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Adlerz K, Patel D, Rowley J, Ng K, Ahsan T. Strategies for scalable manufacturing and translation of MSC-derived extracellular vesicles. Stem Cell Res 2020; 48:101978. [PMID: 32947235 DOI: 10.1016/j.scr.2020.101978] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 06/25/2020] [Accepted: 08/26/2020] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal Stem/Stromal Cells (MSCs) are a well-studied cellular therapy with many clinical trials over the last few decades to treat a range of therapeutic indications. Recently, extracellular vesicles secreted by MSCs (MSC-EVs) have been shown to recapitulate many of the therapeutic effects of the MSCs themselves. While research in MSC-EVs has exploded, it is still early in their development towards a clinical therapy. One of the main challenges in cellular therapy, which will clearly also be a challenge in MSC-EV manufacturing, is developing a scalable, cGMP-compatible manufacturing paradigm. Therefore, the focus of this review is to identify some key MSC-EV manufacturing considerations such as the selection of critical raw materials, manufacturing platforms, and critical quality attribute assays. Addressing these issues early in research and development will accelerate clinical product development, clinical trials, and commercial therapies of MSC-EVs.
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Affiliation(s)
- Katrina Adlerz
- RoosterBio, Inc. 5295 Westview Drive, Suite 275, Frederick, MD 21703, USA
| | - Divya Patel
- RoosterBio, Inc. 5295 Westview Drive, Suite 275, Frederick, MD 21703, USA
| | - Jon Rowley
- RoosterBio, Inc. 5295 Westview Drive, Suite 275, Frederick, MD 21703, USA
| | - Kelvin Ng
- Bioprocessing Technology Institute, 20 Biopolis Way, Centros #06-01 138668, Singapore.
| | - Tabassum Ahsan
- RoosterBio, Inc. 5295 Westview Drive, Suite 275, Frederick, MD 21703, USA.
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Bheri S, Hoffman JR, Park HJ, Davis ME. Biomimetic nanovesicle design for cardiac tissue repair. Nanomedicine (Lond) 2020; 15:1873-1896. [PMID: 32752925 DOI: 10.2217/nnm-2020-0097] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular disease is a major cause of mortality and morbidity worldwide. Exosome therapies are promising for cardiac repair. Exosomes transfer cargo between cells, have high uptake by native cells and are ideal natural carriers for proteins and nucleic acids. Despite their proreparative potential, exosome production is dependent on parent cell state with typically low yields and cargo variability. Therefore, there is potential value in engineering exosomes to maximize their benefits by delivering customized, potent cargo for cardiovascular disease. Here, we outline several methods of exosome engineering focusing on three important aspects: optimizing cargo, homing to target tissue and minimizing clearance. Finally, we put these methods in context of the cardiac field and discuss the future potential of vesicle design.
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Affiliation(s)
- Sruti Bheri
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University School of Medicine, Atlanta, GA 30332, USA
| | - Jessica R Hoffman
- Molecular & Systems Pharmacology Graduate Training Program, Graduate Division of Biological & Biomedical Sciences, Laney Graduate School, Emory University, Atlanta, GA 30322, USA
| | - Hyun-Ji Park
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University School of Medicine, Atlanta, GA 30332, USA
| | - Michael E Davis
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University School of Medicine, Atlanta, GA 30332, USA.,Department of Pediatrics, Division of Pediatric Cardiology, School of Medicine, Emory University, Atlanta, GA 30322, USA.,Children's Heart Research & Outcomes (HeRO) Center, Children's Healthcare of Atlanta & Emory University, Atlanta, GA 30322, USA
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Merckx G, Hosseinkhani B, Kuypers S, Deville S, Irobi J, Nelissen I, Michiels L, Lambrichts I, Bronckaers A. Angiogenic Effects of Human Dental Pulp and Bone Marrow-Derived Mesenchymal Stromal Cells and their Extracellular Vesicles. Cells 2020; 9:cells9020312. [PMID: 32012900 PMCID: PMC7072370 DOI: 10.3390/cells9020312] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/23/2020] [Accepted: 01/25/2020] [Indexed: 12/18/2022] Open
Abstract
Blood vessel formation or angiogenesis is a key process for successful tooth regeneration. Bone marrow-derived mesenchymal stromal cells (BM-MSCs) possess paracrine proangiogenic properties, which are, at least partially, induced by their extracellular vesicles (EVs). However, the isolation of BM-MSCs is associated with several drawbacks, which could be overcome by MSC-like cells of the teeth, called dental pulp stromal cells (DPSCs). This study aims to compare the angiogenic content and functions of DPSC and BM-MSC EVs and conditioned medium (CM). The angiogenic protein profile of DPSC- and BM-MSC-derived EVs, CM and EV-depleted CM was screened by an antibody array and confirmed by ELISA. Functional angiogenic effects were tested in transwell migration and chicken chorioallantoic membrane assays. All secretion fractions contained several pro- and anti-angiogenic proteins and induced in vitro endothelial cell motility. This chemotactic potential was higher for (EV-depleted) CM, compared to EVs with a stronger effect for BM-MSCs. Finally, BM-MSC CM, but not DPSC CM, nor EVs, increased in ovo angiogenesis. In conclusion, we showed that DPSCs are less potent in relation to endothelial cell chemotaxis and in ovo neovascularization, compared to BM-MSCs, which emphasizes the importance of choice of cell type and secretion fraction for stem cell-based regenerative therapies in inducing angiogenesis.
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Affiliation(s)
- Greet Merckx
- UHasselt - Hasselt University, Faculty of Medicine and Life Sciences, Biomedical Research Institute (BIOMED), Agoralaan, 3590 Diepenbeek, Belgium
| | - Baharak Hosseinkhani
- UHasselt - Hasselt University, Faculty of Medicine and Life Sciences, Biomedical Research Institute (BIOMED), Agoralaan, 3590 Diepenbeek, Belgium
| | - Sören Kuypers
- UHasselt - Hasselt University, Faculty of Medicine and Life Sciences, Biomedical Research Institute (BIOMED), Agoralaan, 3590 Diepenbeek, Belgium
| | - Sarah Deville
- UHasselt - Hasselt University, Faculty of Medicine and Life Sciences, Biomedical Research Institute (BIOMED), Agoralaan, 3590 Diepenbeek, Belgium
- Flemish Institute for Technological Research (VITO), Health Department, Boeretang, 2400 Mol, Belgium
| | - Joy Irobi
- UHasselt - Hasselt University, Faculty of Medicine and Life Sciences, Biomedical Research Institute (BIOMED), Agoralaan, 3590 Diepenbeek, Belgium
| | - Inge Nelissen
- Flemish Institute for Technological Research (VITO), Health Department, Boeretang, 2400 Mol, Belgium
| | - Luc Michiels
- UHasselt - Hasselt University, Faculty of Medicine and Life Sciences, Biomedical Research Institute (BIOMED), Agoralaan, 3590 Diepenbeek, Belgium
| | - Ivo Lambrichts
- UHasselt - Hasselt University, Faculty of Medicine and Life Sciences, Biomedical Research Institute (BIOMED), Agoralaan, 3590 Diepenbeek, Belgium
| | - Annelies Bronckaers
- UHasselt - Hasselt University, Faculty of Medicine and Life Sciences, Biomedical Research Institute (BIOMED), Agoralaan, 3590 Diepenbeek, Belgium
- Correspondence: ; Tel.: +32-(0)-11-26-92-23
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Abstract
Extracellular vesicles (EVs) are membrane-defined nanoparticles released by most cell types. The EVs released by cells may differ quantitatively and qualitatively from physiological states to disease states. There are several unique properties of EVs, including their proteins, lipids and nucleic acid cargoes, stability in circulation, and presence in biofluids, which make them a critical vector for cell-to-cell communication and impart utility as a biomarker. EVs may also serve as a vehicle for selective cargo secretion. Similarly, EV cargo may be selectively manipulated for targeted therapeutic delivery. In this review an overview is provided on the EV classification, biogenesis, and secretion pathways, which are conserved across cell types. Next, cargo characterization and effector cell responses are discussed in the context of nonalcoholic steatohepatitis, alcoholic hepatitis, and acetaminophen-induced liver injury. The review also discusses the potential biomarker and therapeutic uses of circulating EVs.
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Affiliation(s)
- Harmeet Malhi
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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