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Tunbridge MJ, Luo X, Thomson AW. Negative Vaccination Strategies for Promotion of Transplant Tolerance. Transplantation 2024; 108:1715-1729. [PMID: 38361234 PMCID: PMC11265982 DOI: 10.1097/tp.0000000000004911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Organ transplantation requires the use of immunosuppressive medications that lack antigen specificity, have many adverse side effects, and fail to induce immunological tolerance to the graft. The safe induction of tolerance to allogeneic tissue without compromising host responses to infection or enhancing the risk of malignant disease is a major goal in transplantation. One promising approach to achieve this goal is based on the concept of "negative vaccination." Vaccination (or actively acquired immunity) involves the presentation of both a foreign antigen and immunostimulatory adjuvant to the immune system to induce antigen-specific immunity. By contrast, negative vaccination, in the context of transplantation, involves the delivery of donor antigen before or after transplantation, together with a "negative adjuvant" to selectively inhibit the alloimmune response. This review will explore established and emerging negative vaccination strategies for promotion of organ or pancreatic islet transplant tolerance. These include donor regulatory myeloid cell infusion, which has progressed to early-phase clinical trials, apoptotic donor cell infusion that has advanced to nonhuman primate models, and novel nanoparticle antigen-delivery systems.
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Affiliation(s)
- Matthew J. Tunbridge
- Adelaide Medical School, University of Adelaide, Adelaide, Australia
- Department of Medicine (Nephrology), Duke University Medical Center, Durham, North Carolina, USA
| | - Xunrong Luo
- Department of Medicine (Nephrology), Duke University Medical Center, Durham, North Carolina, USA
| | - Angus W. Thomson
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Li Z, Zhang X, Fu Z, He W, Gao Y, Ma Y. Retinoic acid-inducible gene-1 knockdown induces immature properties in dendritic cells and prolongs the survival time of allograft mice. Gene 2024; 897:148049. [PMID: 38043832 DOI: 10.1016/j.gene.2023.148049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/19/2023] [Accepted: 11/29/2023] [Indexed: 12/05/2023]
Abstract
BACKGROUND The mature state of dendritic cells (DCs) determines their ability to regulate immune responses. Retinoic acid-inducible gene-1 (RIG-1) plays a critical role in DC activation and maturation. RIG-1 activation triggers mitogen-activated protein kinase and nuclear factor-kappa B signal transduction. In this study, we aimed to investigate the effects of inhibiting RIG-1 expression in DCs and its potential in inducing immune tolerance. METHODS DCs were transduced with the recombinant lentiviral vector (Lv) to inhibit RIG-1 expression. A murine islet and skin transplantation model were constructed to find out whether DC-DDX58-RNAi could prolong allograft survival. The phenotypes of DCs and T-cells were analyzed using flow cytometry. Cytokines in serum were detected by the enzyme-linked immunosorbent assay. Protein levels were determined by Western blot. RESULTS RIG-1-deficient DCs had low expression of costimulatory molecules and major histocompatibility complex and a strong phagocytic ability. DC-DDX58-RNAi induced regulatory T cell differentiation in the transplant recipient spleens. The DC-DDX58-RNAi-treated recipients showed satisfactory islet allograft function and longer survival time. CONCLUSION Inhibition of RIG-1 with DDX58-RNAi prevented the activation and maturation of the DCs, affected T cell differentiation, protected the biological function of the allograft, and prolonged graft survival. These findings may have important therapeutic implications for new immunomodulatory regimens.
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Affiliation(s)
- Zhongqiu Li
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Xuzhi Zhang
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Zongli Fu
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Wenjing He
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Yifang Gao
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China.
| | - Yi Ma
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China; Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China.
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3
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Du X, Li M, Huan C, Lv G. Dendritic cells in liver transplantation immune response. Front Cell Dev Biol 2023; 11:1277743. [PMID: 37900282 PMCID: PMC10606587 DOI: 10.3389/fcell.2023.1277743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 09/27/2023] [Indexed: 10/31/2023] Open
Abstract
Dendritic cells (DCs) are the most powerful antigen presenting cells (APCs), they are considered one of the key regulatory factors in the liver immune system. There is currently much interest in modulating DC function to improve transplant immune response. In liver transplantation, DCs participate in both the promotion and inhibition of the alloreponse by adopting different phenotypes and function. Thus, in this review, we discussed the origin, maturation, migration and pathological effects of several DC subsets, including the conventional DC (cDC), plasmacytoid DC (pDC) and monocyte-derived DC (Mo-DC) in liver transplantation, and we summarized the roles of these DC subsets in liver transplant rejection and tolerance. In addition, we also outlined the latest progress in DC-based related treatment regimens. Overall, our discussion provides a beneficial resource for better understanding the biology of DCs and their manipulation to improve the immune adaptability of patients in transplant status.
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Affiliation(s)
- Xiaodong Du
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, China
| | - Mingqian Li
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, China
| | - Chen Huan
- Center of Infectious Diseases and Pathogen Biology, Institute of Virology and AIDS Research, Key Laboratory of Organ Regeneration and Transplantation of The Ministry of Education, The First Hospital of Jilin University, Changchun, China
| | - Guoyue Lv
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, The First Hospital of Jilin University, Changchun, China
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4
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Amini H, Namjoo AR, Narmi MT, Mardi N, Narimani S, Naturi O, Khosrowshahi ND, Rahbarghazi R, Saghebasl S, Hashemzadeh S, Nouri M. Exosome-bearing hydrogels and cardiac tissue regeneration. Biomater Res 2023; 27:99. [PMID: 37803483 PMCID: PMC10559618 DOI: 10.1186/s40824-023-00433-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 09/18/2023] [Indexed: 10/08/2023] Open
Abstract
BACKGROUND In recent years, cardiovascular disease in particular myocardial infarction (MI) has become the predominant cause of human disability and mortality in the clinical setting. The restricted capacity of adult cardiomyocytes to proliferate and restore the function of infarcted sites is a challenging issue after the occurrence of MI. The application of stem cells and byproducts such as exosomes (Exos) has paved the way for the alleviation of cardiac tissue injury along with conventional medications in clinics. However, the short lifespan and activation of alloreactive immune cells in response to Exos and stem cells are the main issues in patients with MI. Therefore, there is an urgent demand to develop therapeutic approaches with minimum invasion for the restoration of cardiac function. MAIN BODY Here, we focused on recent data associated with the application of Exo-loaded hydrogels in ischemic cardiac tissue. Whether and how the advances in tissue engineering modalities have increased the efficiency of whole-based and byproducts (Exos) therapies under ischemic conditions. The integration of nanotechnology and nanobiology for designing novel smart biomaterials with therapeutic outcomes was highlighted. CONCLUSION Hydrogels can provide suitable platforms for the transfer of Exos, small molecules, drugs, and other bioactive factors for direct injection into the damaged myocardium. Future studies should focus on the improvement of physicochemical properties of Exo-bearing hydrogel to translate for the standard treatment options.
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Affiliation(s)
- Hassan Amini
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of General and Vascular Surgery, Tabriz University of Medical Sciences, Tabriz, 51548/53431, Iran
| | - Atieh Rezaei Namjoo
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Taghavi Narmi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Narges Mardi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samaneh Narimani
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ozra Naturi
- Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Nafiseh Didar Khosrowshahi
- Stem Cell and Tissue Engineering Research Laboratory, Sahand University of Technology, Tabriz, 51335-1996, Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, 51548/53431, Iran.
| | - Solmaz Saghebasl
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, 51548/53431, Iran.
| | - Shahriar Hashemzadeh
- Department of General and Vascular Surgery, Tabriz University of Medical Sciences, Tabriz, 51548/53431, Iran.
| | - Mohammad Nouri
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Greening DW, Xu R, Ale A, Hagemeyer CE, Chen W. Extracellular vesicles as next generation immunotherapeutics. Semin Cancer Biol 2023; 90:73-100. [PMID: 36773820 DOI: 10.1016/j.semcancer.2023.02.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023]
Abstract
Extracellular vesicles (EVs) function as a mode of intercellular communication and molecular transfer to elicit diverse biological/functional response. Accumulating evidence has highlighted that EVs from immune, tumour, stromal cells and even bacteria and parasites mediate the communication of various immune cell types to dynamically regulate host immune response. EVs have an innate capacity to evade recognition, transport and transfer functional components to target cells, with subsequent removal by the immune system, where the immunological activities of EVs impact immunoregulation including modulation of antigen presentation and cross-dressing, immune activation, immune suppression, and immune surveillance, impacting the tumour immune microenvironment. In this review, we outline the recent progress of EVs in immunorecognition and therapeutic intervention in cancer, including vaccine and targeted drug delivery and summarise their utility towards clinical translation. We highlight the strategies where EVs (natural and engineered) are being employed as a therapeutic approach for immunogenicity, tumoricidal function, and vaccine development, termed immuno-EVs. With seminal studies providing significant progress in the sequential development of engineered EVs as therapeutic anti-tumour platforms, we now require direct assessment to tune and improve the efficacy of resulting immune responses - essential in their translation into the clinic. We believe such a review could strengthen our understanding of the progress in EV immunobiology and facilitate advances in engineering EVs for the development of novel EV-based immunotherapeutics as a platform for cancer treatment.
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Affiliation(s)
- David W Greening
- Molecular Proteomics, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia; Baker Department of Cardiovascular Research, Translation and Implementation, Australia; Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and Environment, La Trobe University, Victoria, Australia; Central Clinical School, Monash University, Victoria, Australia; Baker Department of Cardiometabolic Health, University of Melbourne, Victoria, Australia.
| | - Rong Xu
- Central Clinical School, Monash University, Victoria, Australia; Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Anukreity Ale
- Central Clinical School, Monash University, Victoria, Australia; Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Christoph E Hagemeyer
- Central Clinical School, Monash University, Victoria, Australia; Australian Centre for Blood Diseases, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Weisan Chen
- Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and Environment, La Trobe University, Victoria, Australia
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Saravanan PB, Kalivarathan J, Khan F, Shah R, Levy MF, Kanak MA. Exosomes in transplantation: Role in allograft rejection, diagnostic biomarker, and therapeutic potential. Life Sci 2023; 324:121722. [PMID: 37100379 DOI: 10.1016/j.lfs.2023.121722] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/10/2023] [Accepted: 04/19/2023] [Indexed: 04/28/2023]
Abstract
Exosomes are 50-200 nm-sized extracellular vesicles that are secreted by cells to transfer signals and communicate with other cells. Recent research has revealed that allograft-specific exosomes containing proteins, lipids, and genetic materials are released into circulation post-transplantation which are powerful indicators of graft failure in solid-organ and tissue transplantations. The macromolecular content of exosomes released by the allograft and the immune cells serve as potential biomarkers for assessing the function and the acceptance/rejection status of the transplanted grafts. Identifying these biomarkers could aid in the development of therapeutic strategies to improve graft longevity. Exosomes can be used to deliver therapeutic agonists/antagonists to grafts and prevent rejection. Inducing long-term graft tolerance has been demonstrated in many studies using exosomes from immunomodulatory cells such as immature DCs, T regulatory cells, and MSCs. The use of graft-specific exosomes for targeted drug therapy has the potential to reduce the unwanted side effects of immunosuppressive drugs. Overall, in this review, we have explored the critical role of exosomes in the recognition and cross-presentation of donor organ-specific antigens during allograft rejection. Additionally, we have discussed the potential of exosomes as a biomarker for monitoring graft function and damage, as well as their potential therapeutic applications in mitigating allograft rejection.
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Affiliation(s)
| | - Jagan Kalivarathan
- VCU Hume-Lee Transplant Institute, VCU health system, Richmond, VA, United States of America
| | - Faizaan Khan
- Department of Surgery, School of Medicine, VCU, Richmond, VA, United States of America
| | - Rashi Shah
- Department of Surgery, School of Medicine, VCU, Richmond, VA, United States of America
| | - Marlon F Levy
- VCU Hume-Lee Transplant Institute, VCU health system, Richmond, VA, United States of America; Department of Surgery, School of Medicine, VCU, Richmond, VA, United States of America
| | - Mazhar A Kanak
- VCU Hume-Lee Transplant Institute, VCU health system, Richmond, VA, United States of America; Department of Surgery, School of Medicine, VCU, Richmond, VA, United States of America
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Spiers HVM, Stadler LKJ, Smith H, Kosmoliaptsis V. Extracellular Vesicles as Drug Delivery Systems in Organ Transplantation: The Next Frontier. Pharmaceutics 2023; 15:891. [PMID: 36986753 PMCID: PMC10052210 DOI: 10.3390/pharmaceutics15030891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 03/12/2023] Open
Abstract
Extracellular vesicles are lipid bilayer-delimited nanoparticles excreted into the extracellular space by all cells. They carry a cargo rich in proteins, lipids and DNA, as well as a full complement of RNA species, which they deliver to recipient cells to induce downstream signalling, and they play a key role in many physiological and pathological processes. There is evidence that native and hybrid EVs may be used as effective drug delivery systems, with their intrinsic ability to protect and deliver a functional cargo by utilising endogenous cellular mechanisms making them attractive as therapeutics. Organ transplantation is the gold standard for treatment for suitable patients with end-stage organ failure. However, significant challenges still remain in organ transplantation; prevention of graft rejection requires heavy immunosuppression and the lack of donor organs results in a failure to meet demand, as manifested by growing waiting lists. Pre-clinical studies have demonstrated the ability of EVs to prevent rejection in transplantation and mitigate ischemia reperfusion injury in several disease models. The findings of this work have made clinical translation of EVs possible, with several clinical trials actively recruiting patients. However, there is much to be uncovered, and it is essential to understand the mechanisms behind the therapeutic benefits of EVs. Machine perfusion of isolated organs provides an unparalleled platform for the investigation of EV biology and the testing of the pharmacokinetic and pharmacodynamic properties of EVs. This review classifies EVs and their biogenesis routes, and discusses the isolation and characterisation methods adopted by the international EV research community, before delving into what is known about EVs as drug delivery systems and why organ transplantation represents an ideal platform for their development as drug delivery systems.
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Affiliation(s)
- Harry V. M. Spiers
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK; (H.V.M.S.)
- NIHR Blood and Transplant Research Unit in Organ Donation and Transplantation, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Lukas K. J. Stadler
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK; (H.V.M.S.)
- NIHR Blood and Transplant Research Unit in Organ Donation and Transplantation, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Hugo Smith
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK; (H.V.M.S.)
| | - Vasilis Kosmoliaptsis
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge CB2 0QQ, UK; (H.V.M.S.)
- NIHR Blood and Transplant Research Unit in Organ Donation and Transplantation, University of Cambridge, Cambridge CB2 0QQ, UK
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8
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Extracellular Vesicles as Therapeutic Resources in the Clinical Environment. Int J Mol Sci 2023; 24:ijms24032344. [PMID: 36768664 PMCID: PMC9917082 DOI: 10.3390/ijms24032344] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/19/2023] [Accepted: 01/21/2023] [Indexed: 01/26/2023] Open
Abstract
The native role of extracellular vesicles (EVs) in mediating the transfer of biomolecules between cells has raised the possibility to use them as therapeutic vehicles. The development of therapies based on EVs is now expanding rapidly; here we will describe the current knowledge on different key points regarding the use of EVs in a clinical setting. These points are related to cell sources of EVs, isolation, storage, and delivery methods, as well as modifications to the releasing cells for improved production of EVs. Finally, we will depict the application of EVs therapies in clinical trials, considering the impact of the COVID-19 pandemic on the development of these therapies, pointing out that although it is a promising therapy for human diseases, we are still in the initial phase of its application to patients.
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Cui B, Chen XJ, Sun J, Li SP, Zhou GP, Sun LY, Wei L, Zhu ZJ. Dendritic cells originating exosomal miR-193b-3p induces regulatory T cells to alleviate liver transplant rejection. Int Immunopharmacol 2023; 114:109541. [PMID: 36700764 DOI: 10.1016/j.intimp.2022.109541] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/29/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Exosomes exert considerable influence in mediating regulatory T (Treg) cells differentiation, which attach great importance to attenuating acute cellular rejection after liver transplantation (LT). And, miRNAs are known to play essential roles in cell-cell communication delivered by exosomes. However, the function of exosomal miRNAs in regulating Treg cells after LT remains unknown. Here, we performed an expression profiling analysis of exosome-miRNAs from human plasma after LT and investigated their immunoregulatory effects on Treg cells. METHODS Fifty-eight LT patients and nine donors were included in this report. miRNA profiles in plasma exosomes were analyzed using next-generation sequencing. Flow cytometry, HE and multiplex immunofluorescent staining were used to identify Treg cells in the liver and peripheral blood. A lentiviral vector system was used to overexpress miR-193b-3p in dendritic cells (DCs), and exosomes isolated from these transfected cells were co-cultured with spleen lymphocytesin vitro. A quantitative Real-time PCR and enzyme-linked immunosorbent assay were used to detect the expression of cytokines. RESULTS Treg cell infiltration was increased in the liver along with Th17 and CD8+ T cell, and it was down-regulated in peripheral blood in the acute rejection group. High-throughput sequencing revealed that miR-193b-3p was markedly up-regulated in plasma exosomes of non-rejection LT patients. The NLRP3 inflammasome was screened as a target for miR-193b-3p based on target prediction and functional enrichment analyses. Exosomal miR-193b-3p derived from DCs increased Treg cells as demonstrated in vitro. miR-193b-3p overexpression down-regulated NLRP3 as well as the inflammatory cytokines IL-1β and IL-17A while increasing levels of the cytokines IL-10 and TGF-β. CONCLUSION DC derived exosomal miR-193b-3p promoted Treg cells by inhibiting NLRP3 expression. These findings not only provide a new perspective on the mechanisms, but also hold great promise for the treatment or prevention of liver allograft rejection.
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Affiliation(s)
- Bin Cui
- Liver Transplantation Center, Beijing Friendship Hospital, Capital Medical University, Beijing 101100, China; Department of Neurosurgery, Aviation General Hospital, Beijing 100012, China
| | - Xiao-Jie Chen
- Liver Transplantation Center, Beijing Friendship Hospital, Capital Medical University, Beijing 101100, China; Clinical Center for Pediatric Liver Transplantation, Capital Medical University, Beijing 101100, China; National Clinical Research Center for Digestive Diseases, Beijing 101100, China
| | - Jie Sun
- Liver Transplantation Center, Beijing Friendship Hospital, Capital Medical University, Beijing 101100, China; Clinical Center for Pediatric Liver Transplantation, Capital Medical University, Beijing 101100, China; National Clinical Research Center for Digestive Diseases, Beijing 101100, China
| | - Shi-Peng Li
- Liver Transplantation Center, Beijing Friendship Hospital, Capital Medical University, Beijing 101100, China; Clinical Center for Pediatric Liver Transplantation, Capital Medical University, Beijing 101100, China; National Clinical Research Center for Digestive Diseases, Beijing 101100, China
| | - Guang-Peng Zhou
- Liver Transplantation Center, Beijing Friendship Hospital, Capital Medical University, Beijing 101100, China; Clinical Center for Pediatric Liver Transplantation, Capital Medical University, Beijing 101100, China; National Clinical Research Center for Digestive Diseases, Beijing 101100, China
| | - Li-Ying Sun
- Clinical Center for Pediatric Liver Transplantation, Capital Medical University, Beijing 101100, China; National Clinical Research Center for Digestive Diseases, Beijing 101100, China; Department of Critical Liver Diseases, Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing 101100, China
| | - Lin Wei
- Liver Transplantation Center, Beijing Friendship Hospital, Capital Medical University, Beijing 101100, China; Clinical Center for Pediatric Liver Transplantation, Capital Medical University, Beijing 101100, China; National Clinical Research Center for Digestive Diseases, Beijing 101100, China
| | - Zhi-Jun Zhu
- Liver Transplantation Center, Beijing Friendship Hospital, Capital Medical University, Beijing 101100, China; Clinical Center for Pediatric Liver Transplantation, Capital Medical University, Beijing 101100, China; National Clinical Research Center for Digestive Diseases, Beijing 101100, China.
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10
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Fodor M, Salcher S, Gottschling H, Mair A, Blumer M, Sopper S, Ebner S, Pircher A, Oberhuber R, Wolf D, Schneeberger S, Hautz T. The liver-resident immune cell repertoire - A boon or a bane during machine perfusion? Front Immunol 2022; 13:982018. [PMID: 36311746 PMCID: PMC9609784 DOI: 10.3389/fimmu.2022.982018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/30/2022] [Indexed: 11/13/2022] Open
Abstract
The liver has been proposed as an important “immune organ” of the body, as it is critically involved in a variety of specific and unique immune tasks. It contains a huge resident immune cell repertoire, which determines the balance between tolerance and inflammation in the hepatic microenvironment. Liver-resident immune cells, populating the sinusoids and the space of Disse, include professional antigen-presenting cells, myeloid cells, as well as innate and adaptive lymphoid cell populations. Machine perfusion (MP) has emerged as an innovative technology to preserve organs ex vivo while testing for organ quality and function prior to transplantation. As for the liver, hypothermic and normothermic MP techniques have successfully been implemented in clinically routine, especially for the use of marginal donor livers. Although there is evidence that ischemia reperfusion injury-associated inflammation is reduced in machine-perfused livers, little is known whether MP impacts the quantity, activation state and function of the hepatic immune-cell repertoire, and how this affects the inflammatory milieu during MP. At this point, it remains even speculative if liver-resident immune cells primarily exert a pro-inflammatory and hence destructive effect on machine-perfused organs, or in part may be essential to induce liver regeneration and counteract liver damage. This review discusses the role of hepatic immune cell subtypes during inflammatory conditions and ischemia reperfusion injury in the context of liver transplantation. We further highlight the possible impact of MP on the modification of the immune cell repertoire and its potential for future applications and immune modulation of the liver.
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Affiliation(s)
- M. Fodor
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, organLife Laboratory, Medical University of Innsbruck, Innsbruck, Austria
- Department of Visceral, Transplant and Thoracic Surgery, Daniel Swarovski Research Laboratory, Medical University of Innsbruck, Innsbruck, Austria
| | - S. Salcher
- Department of Internal Medicine V, Hematology and Oncology, Comprehensive Cancer Center Innsbruck (CCCI), Medical University Innsbruck (MUI), Innsbruck, Austria
| | - H. Gottschling
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, organLife Laboratory, Medical University of Innsbruck, Innsbruck, Austria
- Department of Visceral, Transplant and Thoracic Surgery, Daniel Swarovski Research Laboratory, Medical University of Innsbruck, Innsbruck, Austria
| | - A. Mair
- Department of Internal Medicine V, Hematology and Oncology, Comprehensive Cancer Center Innsbruck (CCCI), Medical University Innsbruck (MUI), Innsbruck, Austria
| | - M. Blumer
- Department of Anatomy and Embryology, Medical University of Innsbruck, Innsbruck, Austria
| | - S. Sopper
- Department of Internal Medicine V, Hematology and Oncology, Comprehensive Cancer Center Innsbruck (CCCI), Medical University Innsbruck (MUI), Innsbruck, Austria
| | - S. Ebner
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, organLife Laboratory, Medical University of Innsbruck, Innsbruck, Austria
- Department of Visceral, Transplant and Thoracic Surgery, Daniel Swarovski Research Laboratory, Medical University of Innsbruck, Innsbruck, Austria
| | - A. Pircher
- Department of Internal Medicine V, Hematology and Oncology, Comprehensive Cancer Center Innsbruck (CCCI), Medical University Innsbruck (MUI), Innsbruck, Austria
| | - R. Oberhuber
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, organLife Laboratory, Medical University of Innsbruck, Innsbruck, Austria
- Department of Visceral, Transplant and Thoracic Surgery, Daniel Swarovski Research Laboratory, Medical University of Innsbruck, Innsbruck, Austria
| | - D. Wolf
- Department of Internal Medicine V, Hematology and Oncology, Comprehensive Cancer Center Innsbruck (CCCI), Medical University Innsbruck (MUI), Innsbruck, Austria
| | - S. Schneeberger
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, organLife Laboratory, Medical University of Innsbruck, Innsbruck, Austria
- Department of Visceral, Transplant and Thoracic Surgery, Daniel Swarovski Research Laboratory, Medical University of Innsbruck, Innsbruck, Austria
| | - T. Hautz
- Department of Visceral, Transplant and Thoracic Surgery, Center of Operative Medicine, organLife Laboratory, Medical University of Innsbruck, Innsbruck, Austria
- Department of Visceral, Transplant and Thoracic Surgery, Daniel Swarovski Research Laboratory, Medical University of Innsbruck, Innsbruck, Austria
- *Correspondence: T. Hautz,
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11
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Duneton C, Winterberg PD, Ford ML. Activation and regulation of alloreactive T cell immunity in solid organ transplantation. Nat Rev Nephrol 2022; 18:663-676. [PMID: 35902775 PMCID: PMC9968399 DOI: 10.1038/s41581-022-00600-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2022] [Indexed: 01/18/2023]
Abstract
Transplantation is the only curative treatment for patients with kidney failure but it poses unique immunological challenges that must be overcome to prevent allograft rejection and ensure long-term graft survival. Alloreactive T cells are important contributors to graft rejection, and a clearer understanding of the mechanisms by which these cells recognize donor antigens - through direct, indirect or semi-direct pathways - will facilitate their therapeutic targeting. Post-T cell priming rejection responses can also be modified by targeting pathways that regulate T cell trafficking, survival cytokines or innate immune activation. Moreover, the quantity and quality of donor-reactive memory T cells crucially shape alloimmune responses. Of note, many fundamental concepts in transplant immunology have been derived from models of infection. However, the programmed differentiation of allograft-specific T cell responses is probably distinct from that of pathogen-elicited responses, owing to the dearth of pathogen-derived innate immune activation in the transplantation setting. Understanding the fundamental (and potentially unique) immunological pathways that lead to allograft rejection is therefore a prerequisite for the rational development of therapeutics that promote transplantation tolerance.
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Affiliation(s)
- Charlotte Duneton
- Paediatric Nephrology, Robert Debré Hospital, Paris, France
- Emory Transplant Center, Emory University School of Medicine, Atlanta, GA, USA
| | - Pamela D Winterberg
- Paediatric Nephrology, Emory University Department of Paediatrics and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Mandy L Ford
- Emory Transplant Center, Emory University School of Medicine, Atlanta, GA, USA.
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12
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Taner T, Bruner J, Emaumaullee J, Bonaccorsi-Riani E, Zarrinpar A. New Approaches to the Diagnosis of Rejection and Prediction of Tolerance in Liver Transplantation. Transplantation 2022; 106:1952-1962. [PMID: 35594482 PMCID: PMC9529763 DOI: 10.1097/tp.0000000000004160] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Immunosuppression after liver transplantation is essential for preventing allograft rejection. However, long-term drug toxicity and associated complications necessitate investigation of immunosuppression minimization and withdrawal protocols. Development of such protocols is hindered by reliance on current paradigms for monitoring allograft function and rejection status. The current standard of care for diagnosis of rejection is histopathologic assessment and grading of liver biopsies in accordance with the Banff Rejection Activity Index. However, this method is limited by cost, sampling variability, and interobserver variation. Moreover, the invasive nature of biopsy increases the risk of patient complications. Incorporating noninvasive techniques may supplement existing methods through improved understanding of rejection causes, hepatic spatial architecture, and the role of idiopathic fibroinflammatory regions. These techniques may also aid in quantification and help integrate emerging -omics analyses with current assessments. Alternatively, emerging noninvasive methods show potential to detect and distinguish between different types of rejection while minimizing risk of adverse advents. Although biomarkers have yet to replace biopsy, preliminary studies suggest that several classes of analytes may be used to detect rejection with greater sensitivity and in earlier stages than traditional methods, possibly when coupled with artificial intelligence. Here, we provide an overview of the latest efforts in optimizing the diagnosis of rejection in liver transplantation.
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Affiliation(s)
- Timucin Taner
- Departments of Surgery & Immunology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Julia Bruner
- Department of Surgery, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Juliet Emaumaullee
- Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Eliano Bonaccorsi-Riani
- Abdominal Transplant Unit, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Ali Zarrinpar
- Department of Surgery, College of Medicine, University of Florida, Gainesville, FL, USA
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13
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Li R, Li H, Yang X, Hu H, Liu P, Liu H. Crosstalk between dendritic cells and regulatory T cells: Protective effect and therapeutic potential in multiple sclerosis. Front Immunol 2022; 13:970508. [PMID: 36177043 PMCID: PMC9513370 DOI: 10.3389/fimmu.2022.970508] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system related to autoimmunity and is characterized by demyelination, neuroinflammation, and neurodegeneration. Cell therapies mediated by dendritic cells (DCs) and regulatory T cells (Tregs) have gradually become accumulating focusing in MS, and the protective crosstalk mechanisms between DCs and Tregs provide the basis for the efficacy of treatment regimens. In MS and its animal model experimental autoimmune encephalomyelitis, DCs communicate with Tregs to form immune synapses and complete a variety of complex interactions to counteract the unbalanced immune tolerance. Through different co-stimulatory/inhibitory molecules, cytokines, and metabolic enzymes, DCs regulate the proliferation, differentiation and function of Tregs. On the other hand, Tregs inhibit the mature state and antigen presentation ability of DCs, ultimately improving immune tolerance. In this review, we summarized the pivotal immune targets in the interaction between DCs and Tregs, and elucidated the protective mechanisms of DC-Treg cell crosstalk in MS, finally interpreted the complex cell interplay in the manner of inhibitory feedback loops to explore novel therapeutic directions for MS.
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Affiliation(s)
- Ruoyu Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hui Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaoyan Yang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Huiru Hu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Peidong Liu
- Department of Neurosurgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Translational Medicine Center, First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hongbo Liu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Translational Medicine Center, First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Hongbo Liu,
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14
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Cui B, Sun J, Li SP, Zhou GP, Chen XJ, Sun LY, Wei L, Zhu ZJ. CD80+ dendritic cell derived exosomes inhibit CD8+ T cells through down-regulating NLRP3 expression after liver transplantation. Int Immunopharmacol 2022; 109:108787. [DOI: 10.1016/j.intimp.2022.108787] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/01/2022] [Accepted: 04/17/2022] [Indexed: 12/12/2022]
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15
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Lazana I, Vassilopoulos G. A 'waste product' to save the day in the field of transplantation: the evolving potential of extracellular vesicles. Immunology 2022; 167:154-164. [PMID: 35751500 DOI: 10.1111/imm.13532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 05/25/2022] [Indexed: 11/26/2022] Open
Abstract
Graft rejection and graft-versus-host disease constitute the leading causes of morbidity and early mortality after solid organ and hematopoietic stem cell transplantation, respectively. Despite the current advances in immunotherapy, their incidence remains significant, underlying the need for new therapies to be developed. Extracellular vesicles (EV), and particularly small EV (sEV), have emerged as significant mediators of intercellular communication and immune modulation. Depending on the parental cell, they may exert potent immunostimulatory or immunosuppressive functions, attracting a major interest in field of transplantation. An increasing number of publications, studying their role in graft dysfunction pathophysiology, early detection of graft failure and in prevention and/or therapy of graft rejection, have emerged in recent years with enthusiastic results. In this review, we discuss the role and various applications of sEV in the transplant setting and present their huge potential for clinical translation. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ioanna Lazana
- Cell and Gene Therapy Laboratory, Biomedical Research Foundation of the Academy of Athens, Athens, Greece.,Hematology Department, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - George Vassilopoulos
- Cell and Gene Therapy Laboratory, Biomedical Research Foundation of the Academy of Athens, Athens, Greece.,Division of Hematology, University of Thessaly Medical School, Larissa, Greece
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16
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Bahmani L, Ullah M. Different Sourced Extracellular Vesicles and Their Potential Applications in Clinical Treatments. Cells 2022; 11:cells11131989. [PMID: 35805074 PMCID: PMC9265969 DOI: 10.3390/cells11131989] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/19/2022] [Accepted: 06/20/2022] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) include a heterogeneous group of natural cell-derived nanostructures that are increasingly regarded as promising biotherapeutic agents and drug delivery vehicles in human medicine. Desirable intrinsic properties of EVs including the ability to bypass natural membranous barriers and to deliver their unique biomolecular cargo to specific cell populations position them as fiercely competitive alternatives for currently available cell therapies and artificial drug delivery platforms. EVs with distinct characteristics can be released from various cell types into the extracellular environment as a means of transmitting bioactive components and altering the status of the target cell. Despite the existence of a large number of preclinical studies confirming the therapeutic efficacy of different originated EVs for treating several pathological conditions, in this review, we first provide a brief overview of EV biophysical properties with an emphasis on their intrinsic therapeutic benefits over cell-based therapies and synthetic delivery systems. Next, we describe in detail different EVs derived from distinct cell sources, compare their advantages and disadvantages, and recapitulate their therapeutic effects on various human disorders to highlight the progress made in harnessing EVs for clinical applications. Finally, knowledge gaps and concrete hurdles that currently hinder the clinical translation of EV therapies are debated with a futuristic perspective.
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Affiliation(s)
- Leila Bahmani
- Institute for Immunity and Transplantation, Stem Cell Biology and Regenerative Medicine, School of Medicine, Stanford University, Palo Alto, CA 94304, USA;
- Molecular Medicine Department of Medicine, Stanford University, Palo Alto, CA 94304, USA
| | - Mujib Ullah
- Institute for Immunity and Transplantation, Stem Cell Biology and Regenerative Medicine, School of Medicine, Stanford University, Palo Alto, CA 94304, USA;
- Molecular Medicine Department of Medicine, Stanford University, Palo Alto, CA 94304, USA
- Correspondence:
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17
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Sailliet N, Ullah M, Dupuy A, Silva AKA, Gazeau F, Le Mai H, Brouard S. Extracellular Vesicles in Transplantation. Front Immunol 2022; 13:800018. [PMID: 35185891 PMCID: PMC8851566 DOI: 10.3389/fimmu.2022.800018] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/11/2022] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) have been extensively studied in the last two decades. It is now well documented that they can actively participate in the activation or regulation of immune system functions through different mechanisms, the most studied of which include protein–protein interactions and miRNA transfers. The functional diversity of EV-secreting cells makes EVs potential targets for immunotherapies through immune cell-derived EV functions. They are also a potential source of biomarkers of graft rejection through donor cells or graft environment-derived EV content modification. This review focuses on preclinical studies that describe the role of EVs from different cell types in immune suppression and graft tolerance and on the search for biomarkers of rejection.
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Affiliation(s)
- Nicolas Sailliet
- Nantes Université, INSERM, Centeer for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Matti Ullah
- MSC-med, INSERM U7057, Universite de Paris, Paris, France
| | - Amandine Dupuy
- Nantes Université, INSERM, Centeer for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | | | | | - Hoa Le Mai
- Nantes Université, INSERM, Centeer for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Sophie Brouard
- Nantes Université, INSERM, Centeer for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France.,Labex IGO, Nantes, France
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18
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Abstract
Rheumatoid arthritis (RA) is a heterogeneous autoimmune disorder that leads to severe joint deformities, negatively affecting the patient's quality of life. Extracellular vesicles (EVs), which include exosomes and ectosomes, act as intercellular communication mediators in several physiological and pathological processes in various diseases including RA. In contrast, EVs secreted by mesenchymal stem cells perform an immunomodulatory function and stimulate cartilage repair, showing promising therapeutic results in animal models of RA. EVs from other sources, including dendritic cells, neutrophils and myeloid-derived suppressor cells, also influence the biological function of immune and joint cells. This review describes the role of EVs in the pathogenesis of RA and presents evidence supporting future studies on the therapeutic potential of EVs from different sources. This information will contribute to a better understanding of RA development, as well as a starting point for exploring cell-free-based therapies for RA.
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19
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Zhou L, Shen M, Fan X, Liu Y, Yang L. Pathogenic and Potential Therapeutic Roles of Exosomes Derived From Immune Cells in Liver Diseases. Front Immunol 2022; 13:810300. [PMID: 35185900 PMCID: PMC8854144 DOI: 10.3389/fimmu.2022.810300] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/19/2022] [Indexed: 12/12/2022] Open
Abstract
Liver diseases, such as viral hepatitis, alcoholic hepatitis and cirrhosis, nonalcoholic steatohepatitis, and hepatocellular carcinoma place a heavy burden on many patients worldwide. However, the treatment of many liver diseases is currently insufficient, and the treatment may be associated with strong side effects. Therapies for liver diseases targeting the molecular and cellular levels that minimize adverse reactions and maximize therapeutic effects are in high demand. Immune cells are intimately involved in the occurrence, development, and prognosis of liver diseases. The immune response in the liver can be suppressed, leading to tolerance in homeostasis. When infection or tissue damage occurs, immunity in the liver is activated rapidly. As small membrane vesicles derived from diverse cells, exosomes carry multiple cargoes to exert their regulatory effects on recipient cells under physiological or pathological conditions. Exosomes from different immune cells exert different effects on liver diseases. This review describes the biology of exosomes and focuses on the effects of exosomes from different immune cells on pathogenesis, diagnosis, and prognosis and their therapeutic potential in liver diseases.
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20
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Elashiry M, Elsayed R, Cutler CW. Exogenous and Endogenous Dendritic Cell-Derived Exosomes: Lessons Learned for Immunotherapy and Disease Pathogenesis. Cells 2021; 11:cells11010115. [PMID: 35011677 PMCID: PMC8750541 DOI: 10.3390/cells11010115] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022] Open
Abstract
Immune therapeutic exosomes, derived exogenously from dendritic cells (DCs), the 'directors' of the immune response, are receiving favorable safety and tolerance profiles in phase I and II clinical trials for a growing number of inflammatory and neoplastic diseases. DC-derived exosomes (EXO), the focus of this review, can be custom tailored with immunoregulatory or immunostimulatory molecules for specific immune cell targeting. Moreover, the relative stability, small size and rapid uptake of EXO by recipient immune cells offer intriguing options for therapeutic purposes. This necessitates an in-depth understanding of mechanisms of EXO biogenesis, uptake and routing by recipient immune cells, as well as their in vivo biodistribution. Against this backdrop is recognition of endogenous exosomes, secreted by all cells, the molecular content of which is reflective of the metabolic state of these cells. In this regard, exosome biogenesis and secretion is regulated by cell stressors of chronic inflammation and tumorigenesis, including dysbiotic microbes, reactive oxygen species and DNA damage. Such cell stressors can promote premature senescence in young cells through the senescence associated secretory phenotype (SASP). Pathological exosomes of the SASP amplify inflammatory signaling in stressed cells in an autocrine fashion or promote inflammatory signaling to normal neighboring cells in paracrine, without the requirement of cell-to-cell contact. In summary, we review relevant lessons learned from the use of exogenous DC exosomes for immune therapy, as well as the pathogenic potential of endogenous DC exosomes.
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21
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Gołębiewska JE, Wardowska A, Pietrowska M, Wojakowska A, Dębska-Ślizień A. Small Extracellular Vesicles in Transplant Rejection. Cells 2021; 10:2989. [PMID: 34831212 PMCID: PMC8616261 DOI: 10.3390/cells10112989] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 10/31/2021] [Accepted: 10/31/2021] [Indexed: 12/28/2022] Open
Abstract
Small extracellular vesicles (sEV), which are released to body fluids (e.g., serum, urine) by all types of human cells, may stimulate or inhibit the innate and adaptive immune response through multiple mechanisms. Exosomes or sEV have on their surface many key receptors of immune response, including major histocompatibility complex (MHC) components, identical to their cellular origin. They also exhibit an ability to carry antigen and target leukocytes either via interaction with cell surface receptors or intracellular delivery of inflammatory mediators, receptors, enzymes, mRNAs, and noncoding RNAs. By the transfer of donor MHC antigens to recipient antigen presenting cells sEV may also contribute to T cell allorecognition and alloresponse. Here, we review the influence of sEV on the development of rejection or tolerance in the setting of solid organ and tissue allotransplantation. We also summarize and discuss potential applications of plasma and urinary sEV as biomarkers in the context of transplantation. We focus on the attempts to use sEV as a noninvasive approach to detecting allograft rejection. Preliminary studies show that both sEV total levels and a set of specific molecules included in their cargo may be an evidence of ongoing allograft rejection.
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Affiliation(s)
- Justyna E. Gołębiewska
- Department of Nephrology, Transplantology and Internal Medicine, Medical University of Gdańsk, 80-210 Gdańsk, Poland;
| | - Anna Wardowska
- Department of Physiopathology, Medical University of Gdańsk, 80-210 Gdańsk, Poland;
| | - Monika Pietrowska
- Centre for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie National Research Institute of Oncology, 44-102 Gliwice, Poland;
| | - Anna Wojakowska
- Institute of Bioorganic Chemistry Polish Academy of Sciences, 61-704 Poznań, Poland;
| | - Alicja Dębska-Ślizień
- Department of Nephrology, Transplantology and Internal Medicine, Medical University of Gdańsk, 80-210 Gdańsk, Poland;
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22
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Alberro A, Iparraguirre L, Fernandes A, Otaegui D. Extracellular Vesicles in Blood: Sources, Effects, and Applications. Int J Mol Sci 2021; 22:ijms22158163. [PMID: 34360924 PMCID: PMC8347110 DOI: 10.3390/ijms22158163] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) are important players for intercellular communication. EVs are secreted by almost all cell types; they can transfer information between nearby or distant cells, and they are highly abundant in body fluids. In this review, we describe the general characteristics of EVs, as well as isolation and characterization approaches. Then, we focus on one of the most relevant sources of EVs: the blood. Indeed, apart from EVs secreted by blood cells, EVs of diverse origins travel in the bloodstream. We present the numerous types of EVs that have been found in circulation. Besides, the implications of blood-derived EVs in both physiological and pathological processes are summarized, highlighting their potential as biomarkers for the diagnosis, treatment monitoring, and prognosis of several diseases, and also as indicators of physiological modifications. Finally, the applications of EVs introduced in the circulatory system are discussed. We describe the use of EVs from distinct origins, naturally produced or engineered, autologous, allogeneic, or even from different species and the effects they have when introduced in circulation. Therefore, the present work provides a comprehensive overview of the components, effects, and applications of EVs in blood.
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Affiliation(s)
- Ainhoa Alberro
- Multiple Sclerosis Group, Biodonostia Health Research Institute, 20014 San Sebastian, Spain; (A.A.); (L.I.)
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal;
| | - Leire Iparraguirre
- Multiple Sclerosis Group, Biodonostia Health Research Institute, 20014 San Sebastian, Spain; (A.A.); (L.I.)
| | - Adelaide Fernandes
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal;
- Department of Pharmaceutical Sciences and Medicines, Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal
| | - David Otaegui
- Multiple Sclerosis Group, Biodonostia Health Research Institute, 20014 San Sebastian, Spain; (A.A.); (L.I.)
- Correspondence:
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23
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Elashiry M, Morandini AC, Cornelius Timothius CJ, Ghaly M, Cutler CW. Selective Antimicrobial Therapies for Periodontitis: Win the "Battle and the War". Int J Mol Sci 2021; 22:ijms22126459. [PMID: 34208697 PMCID: PMC8235535 DOI: 10.3390/ijms22126459] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/26/2021] [Accepted: 06/07/2021] [Indexed: 12/11/2022] Open
Abstract
Traditional antimicrobial therapies for periodontitis (PD) have long focused on non-selective and direct approaches. Professional cleaning of the subgingival biofilm by instrumentation of dental root surfaces, known as scaling and root planning (SRP), is the mainstay of periodontal therapy and is indisputably effective. Non-physical approaches used as adjuncts to SRP, such as chemical and biological agents, will be the focus of this review. In this regard, traditional agents such as oral antiseptics and antibiotics, delivered either locally or systemically, were briefly reviewed as a backdrop. While generally effective in winning the “battle” against PD in the short term, by reducing its signs and symptoms, patients receiving such therapies are more susceptible to recurrence of PD. Moreover, the long-term consequences of such therapies are still in question. In particular, concern about chronic use of systemic antibiotics and their influence on the oral and gut microbiota is warranted, considering antibiotic resistance plasmids, and potential transfer between oral and non-oral microbes. In the interest of winning the “battle and the war”, new more selective and targeted antimicrobials and biologics for PD are being studied. These are principally indirect, blocking pathways involved in bacterial colonization, nutrient acquisition, inflammation or cellular invasion without directly killing the pathogens. This review will focus on current and prospective antimicrobial therapies for PD, emphasizing therapies that act indirectly on the microbiota, with clearly defined cellular and molecular targets.
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24
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Zheng Q, Zhang S, Guo WZ, Li XK. The Unique Immunomodulatory Properties of MSC-Derived Exosomes in Organ Transplantation. Front Immunol 2021; 12:659621. [PMID: 33889158 PMCID: PMC8055852 DOI: 10.3389/fimmu.2021.659621] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/22/2021] [Indexed: 12/12/2022] Open
Abstract
Methods for suppressing the host immune system over the long term and improving transplantation tolerance remain a primary issue in organ transplantation. Cell therapy is an emerging therapeutic strategy for immunomodulation after transplantation. Mesenchymal stem cells (MSCs) are adult multipotent stem cells with wide differentiation potential and immunosuppressive properties, which are mostly used in regenerative medicine and immunomodulation. In addition, emerging research suggests that MSC-derived exosomes have the same therapeutic effects as MSCs in many diseases, while avoiding many of the risks associated with cell transplantation. Their unique immunomodulatory properties are particularly important in the immune system-overactive graft environment. In this paper, we review the effects of MSC-derived exosomes in the immune regulation mechanism after organ transplantation and graft-versus-host disease (GvHD) from various perspectives, including immunosuppression, influencing factors, anti-inflammatory properties, mediation of tissue repair and regeneration, and the induction of immune tolerance. At present, the great potential of MSC-derived exosomes in immunotherapy has attracted a great deal of attention. Furthermore, we discuss the latest insights on MSC-derived exosomes in organ transplantation and GvHD, especially its commercial production concepts, which aim to provide new strategies for improving the prognosis of organ transplantation patients.
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Affiliation(s)
- Qingyuan Zheng
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shuijun Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wen-Zhi Guo
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiao-Kang Li
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
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25
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Alahdal M, Zhang H, Huang R, Sun W, Deng Z, Duan L, Ouyang H, Wang D. Potential efficacy of dendritic cell immunomodulation in the treatment of osteoarthritis. Rheumatology (Oxford) 2021; 60:507-517. [PMID: 33249512 DOI: 10.1093/rheumatology/keaa745] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/13/2020] [Accepted: 09/02/2020] [Indexed: 12/25/2022] Open
Abstract
Dendritic cells (DCs) are a cluster of heterogeneous antigen-presenting cells that play a pivotal role in both innate and adaptive immune responses. Rare reports have discussed their role in OA immunopathogenesis. Recently, DCs derived from the synovial fluid of OA mice were shown to have increased expression of toll-like receptors. Moreover, from in vitro studies it was concluded that DCs derived from OA patients had secreted high levels of inflammatory cytokines. Likewise, a significant increase in CD123+BDCA-2 plasmacytoid DCs has been observed in the synovial fluid of OA patients. Furthermore, DCs have a peripheral tolerance potential and can become regulatory under specific circumstances. This could be exploited as a promising tool to eliminate immunoinflammatory manifestations in OA disease. In this review, the potential roles DCs could play in OA pathogenesis have been described. In addition, suggestions for the development of new immunotherapeutic strategies involving intra-articular injections of tolerogenic plasmacytoid DCs for treating OA inflammations have been made.
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Affiliation(s)
- Murad Alahdal
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Laboratory of Digital Orthopedic Engineering, Shenzhen Second People's Hospital, Shenzhen, China.,Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Hand and Foot Surgery Department, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, Shenzhen, China
| | - Hui Zhang
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Laboratory of Digital Orthopedic Engineering, Shenzhen Second People's Hospital, Shenzhen, China.,Hand and Foot Surgery Department, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, Shenzhen, China.,School of Medicine, University of South China, Hengyang, China
| | - Rongxiang Huang
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Laboratory of Digital Orthopedic Engineering, Shenzhen Second People's Hospital, Shenzhen, China.,Hand and Foot Surgery Department, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, Shenzhen, China.,School of Medicine, University of South China, Hengyang, China
| | - Wei Sun
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Hand and Foot Surgery Department, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, Shenzhen, China
| | - Zhiqin Deng
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Laboratory of Digital Orthopedic Engineering, Shenzhen Second People's Hospital, Shenzhen, China.,Hand and Foot Surgery Department, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, Shenzhen, China
| | - Li Duan
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Laboratory of Digital Orthopedic Engineering, Shenzhen Second People's Hospital, Shenzhen, China.,Hand and Foot Surgery Department, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, Shenzhen, China
| | - Hongwei Ouyang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Daping Wang
- Shenzhen Key Laboratory of Tissue Engineering, Shenzhen Laboratory of Digital Orthopedic Engineering, Shenzhen Second People's Hospital, Shenzhen, China.,Hand and Foot Surgery Department, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, Shenzhen, China.,Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, China
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26
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Wu J, Zhao R, Dai J, Lai G, Khan AU, Yu X, Wu S, Ouyang J, Sang H. Analysis of differential expression of long non‑coding RNAs in exosomes derived from mature and immature dendritic cells. Mol Med Rep 2021; 23:132. [PMID: 33313954 PMCID: PMC7751491 DOI: 10.3892/mmr.2020.11771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 11/09/2020] [Indexed: 12/12/2022] Open
Abstract
Dendritic cells release bioactive exosomes involved in immune regulation. Long non‑coding RNAs (lncRNAs) are implicated in a number of immunoregulatory mechanisms. However, the roles of lncRNAs in dendritic cell‑derived exosomes remain to be elucidated. The present study aimed to investigate the roles of lncRNAs in exosomes derived from mature and immature dendritic cells and to find specific lncRNAs with immunoregulatory function. The expression profiles of lncRNAs in exosomes derived from bone marrow dendritic cells of C57 mice were illustrated. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses and Gene Set Enrichment Analysis were performed to identify potential targets correlated with immune regulation. In addition, lncRNA‑miRNA‑mRNA networks were predicted using bioinformatics methods. Representative lncRNAs were further validated via reverse transcription‑quantitative PCR. A total of 437 lncRNAs were analyzed using RNA‑seq. Among these, the expression of ~87 lncRNAs was upregulated and 21 lncRNAs was downregulated in mature dendritic cell‑derived exosomes (Dex) compared with immature Dex. GO analyses indicated the involvement of upregulated lncRNAs in multiple biological functions, such as the immune system process, while downregulated lncRNAs were involved in poly(A) RNA binding. Analysis of the KEGG pathway identified the relationship of TNF signaling and ribosome pathway with upregulated lncRNAs and downregulated lncRNAs, respectively. The results of gene set enrichment analysis identified that three lncRNA‑associated transcripts (Procr‑203, Clec4e‑202 and Traf1‑203) were highly associated with immunoregulatory functions including T helper cell differentiation and Janus kinase‑STAT signaling pathway. The results indicated the involvement of candidate lncRNAs in immunoregulation and suggested a new perspective on the modulation of lncRNAs in Dex.
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Affiliation(s)
- Jiachang Wu
- Department of Orthopedic Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Renli Zhao
- Department of Orthopedic Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jingxing Dai
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangdong Provincial Medical Biomechanical Key Laboratory, Guangzhou, Guangdong 510515, P.R. China
| | - Guohua Lai
- Department of Orthopedic Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Asmat Ullah Khan
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangdong Provincial Medical Biomechanical Key Laboratory, Guangzhou, Guangdong 510515, P.R. China
| | - Xiao Yu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Sha Wu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Jun Ouyang
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangdong Provincial Medical Biomechanical Key Laboratory, Guangzhou, Guangdong 510515, P.R. China
| | - Hongxun Sang
- Department of Orthopedic Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518000, P.R. China
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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27
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Carlson K, Kink J, Hematti P, Al-Adra DP. Extracellular Vesicles as a Novel Therapeutic Option in Liver Transplantation. Liver Transpl 2020; 26:1522-1531. [PMID: 32844568 DOI: 10.1002/lt.25874] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/09/2020] [Accepted: 08/01/2020] [Indexed: 12/13/2022]
Abstract
Longterm liver graft dysfunction and immunological rejection remain common adverse events, in part due to early acute rejection episodes initiated by ischemia/reperfusion injury (IRI) immediately following transplantation. Novel treatment methods are therefore required to ameliorate liver IRI and to promote longterm allograft acceptance. Extracellular vesicles (EVs) derived from tolerogenic phenotype cells may serve as a novel therapeutic option in liver transplantation due to their immunomodulatory and proregenerative effects. Studies of hepatic IRI along with animal liver allograft models have demonstrated that EVs isolated from mesenchymal stem/stromal cells, immature dendritic cells, and hepatocytes can reduce graft injury through mechanisms including enhancement of mitochondrial autophagy, inhibition of immune response, and promotion of tissue regeneration. These preclinical models may soon move translationally into clinical practice, necessitating the generation of robust methods to generate clinical-grade EVs. These methods must address issues of reproducibility and ability to scale up the tolerogenic cell cultivation, EV isolation, and EV characterization. Once generated, the efficient delivery of EVs to the donor organ prior to transplantation remains an issue that could be resolved through the novel organ storage method ex vivo machine perfusion (EVMP). In this review, we summarize studies that have used tolerogenic cell-derived EVs to ameliorate hepatic IRI and promote liver allograft acceptance, discuss the steps toward generation of clinical-grade EVs, and introduce EVMP as a novel method to efficiently deliver EVs.
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Affiliation(s)
- Kristin Carlson
- Division of Transplantation, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - John Kink
- Carbone Cancer Center, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Peiman Hematti
- Carbone Cancer Center, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - David P Al-Adra
- Division of Transplantation, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI
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28
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Que W, Guo WZ, Li XK. Manipulation of Regulatory Dendritic Cells for Induction Transplantation Tolerance. Front Immunol 2020; 11:582658. [PMID: 33162996 PMCID: PMC7591396 DOI: 10.3389/fimmu.2020.582658] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 08/31/2020] [Indexed: 12/13/2022] Open
Abstract
Current organ transplantation therapy is life-saving but accompanied by well-recognized side effects due to post-transplantation systematic immunosuppressive treatment. Dendritic cells (DCs) are central instigators and regulators of transplantation immunity and are responsible for balancing allograft rejection and tolerance. They are derived from monocyte-macrophage DC progenitors originating in the bone marrow and are classified into different subsets based on their developmental, phenotypical, and functional criteria. Functionally, DCs instigate allograft immunity by presenting donor antigens to alloreactive T cells via direct, indirect, and semidirect recognition pathways and provide essential signaling for alloreactive T cell activation via costimulatory molecules and pro-inflammatory cytokines. Regulatory DCs (DCregs) are characterized by a relatively low expression of major histocompatibility complex, costimulatory molecules, and altered cytokine production and exert their regulatory function through T cell anergy, T cell deletion, and regulatory T cell induction. In rodent transplantation studies, DCreg-based therapy, by in situ targeting or infusion of ex vivo generated DCregs, exhibits promising potential as a natural, well-tolerated, organ-specific therapeutic strategy for promoting lasting organ-specific transplantation tolerance. Recent early-phase studies of DCregs have begun to examine the safety and efficacy of DCreg-induced allograft tolerance in living-donor renal or liver transplantations. The present review summarizes the basic characteristics, function, and translation of DCregs in transplantation tolerance induction.
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Affiliation(s)
- Weitao Que
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Wen-Zhi Guo
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiao-Kang Li
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
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29
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Na N, Zhao D, Zhang J, Wu J, Miao B, Li H, Luo Y, Tang Z, Zhang W, Bellanti JA, Zheng SG. Carbamylated erythropoietin regulates immune responses and promotes long-term kidney allograft survival through activation of PI3K/AKT signaling. Signal Transduct Target Ther 2020; 5:194. [PMID: 32934199 PMCID: PMC7493938 DOI: 10.1038/s41392-020-00232-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/28/2020] [Accepted: 05/26/2020] [Indexed: 01/06/2023] Open
Abstract
Modulation of alloimmune responses is critical to improving transplant outcome and promoting long-term graft survival. To determine mechanisms by which a nonhematopoietic erythropoietin (EPO) derivative, carbamylated EPO (CEPO), regulates innate and adaptive immune cells and affects renal allograft survival, we utilized a rat model of fully MHC-mismatched kidney transplantation. CEPO administration markedly extended the survival time of kidney allografts compared with the transplant alone control group. This therapeutic effect was inhibited when the recipients were given LY294002, a selective inhibitor of the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) signaling pathway or anti-EPO receptor (EPOR) antibody, in addition to CEPO. In vitro, CEPO inhibited the differentiation and function of dendritic cells and modulated their production of pro-inflammatory and anti-inflammatory cytokines, along with activating the PI3K/AKT signaling pathway and increasing EPOR mRNA and protein expression by these innate immune cells. Moreover, after CD4+ T cells were exposed to CEPO the Th1/Th2 ratio decreased and the regulatory T cell (Treg)/Th17 ratio increased. These effects were abolished by LY294002 or anti-EPOR antibody, suggesting that CEPO regulates immune responses and promotes kidney allograft survival by activating the PI3K/AKT signaling pathway in an EPOR-dependent manner. The immunomodulatory and specific signaling pathway effects of CEPO identified in this study suggest a potential therapeutic approach to promoting kidney transplant survival.
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Affiliation(s)
- Ning Na
- Department of Kidney Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Daqiang Zhao
- Department of Kidney Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Jinhua Zhang
- Department of Kidney Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Jiaqing Wu
- Department of Kidney Transplantation, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, 519000, Guangdong, China
| | - Bin Miao
- Department of Kidney Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Heng Li
- Department of Kidney Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Yingxun Luo
- Department of Kidney Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Zuofu Tang
- Department of Kidney Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Wensheng Zhang
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, 15261, PA, USA. .,Department of Plastic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, 15261, PA, USA. .,United States Army Institute of Surgical Research, JBSA Fort Sam Houston, Houston, 78234, TX, USA.
| | - Joseph A Bellanti
- Department of Pediatrics and Microbiology-Immunology, Georgetown University Medical Center, Washington, DC, USA
| | - Song Guo Zheng
- Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, 43210, OH, USA.
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30
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Shao S, Fang H, Li Q, Wang G. Extracellular vesicles in Inflammatory Skin Disorders: from Pathophysiology to Treatment. Am J Cancer Res 2020; 10:9937-9955. [PMID: 32929326 PMCID: PMC7481415 DOI: 10.7150/thno.45488] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 07/31/2020] [Indexed: 12/16/2022] Open
Abstract
Extracellular vesicles (EVs), naturally secreted by almost all known cell types into extracellular space, can transfer their bioactive cargos of nucleic acids and proteins to recipient cells, mediating cell-cell communication. Thus, they participate in many pathogenic processes including immune regulation, cell proliferation and differentiation, cell death, angiogenesis, among others. Cumulative evidence has shown the important regulatory effects of EVs on the initiation and progression of inflammation, autoimmunity, and cancer. In dermatology, recent studies indicate that EVs play key immunomodulatory roles in inflammatory skin disorders, including psoriasis, atopic dermatitis, lichen planus, bullous pemphigoid, systemic lupus erythematosus, and wound healing. Importantly, EVs can be used as biomarkers of pathophysiological states and/or therapeutic agents, both as carriers of drugs or even as a drug by themselves. In this review, we will summarize current research advances of EVs from different cells and their implications in inflammatory skin disorders, and further discuss their future applications, updated techniques, and challenges in clinical translational medicine.
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31
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Liu Y, Wang Y, Lv Q, Li X. Exosomes: From garbage bins to translational medicine. Int J Pharm 2020; 583:119333. [PMID: 32348800 DOI: 10.1016/j.ijpharm.2020.119333] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/09/2020] [Accepted: 04/11/2020] [Indexed: 12/12/2022]
Abstract
Exosomes are lipid bilayer-enclosed vesicles of endosomal origin, which initially considered as garbage bins to dispose unwanted cellular components, but they are now emerged as an intercellular communication system involved in several physiological and pathological conditions. With the increasing understanding that the healthy patients release exosomes with distinct proteins and RNAs, exosomes have been exploited as biomarkers for disease diagnosis and prognosis. Owing to the intrinsic immunomodulatory in a tumor microenvironment, exosomes have also been vaccinated into patients against malignant diseases. Moreover, the nano-metered exosomes are relatively stable in extracellular fluids. Thus they appear attractive in delivering "cargo" to destined cells with enhanced efficiency. In this review, we outline the current knowledge in exosomal biogenesis and isolation. Furthermore, the biological activities of exosomes are also discussed with a focus on their potentials to be employed in translational medicine, especially as biomarkers, vaccines and therapeutic delivery system.
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Affiliation(s)
- Ying Liu
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yuzhu Wang
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qianzhou Lv
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Xiaoyu Li
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China.
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32
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Ochando J, Ordikhani F, Jordan S, Boros P, Thomson AW. Tolerogenic dendritic cells in organ transplantation. Transpl Int 2019; 33:113-127. [PMID: 31472079 DOI: 10.1111/tri.13504] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/24/2019] [Accepted: 08/25/2019] [Indexed: 12/18/2022]
Abstract
Dendritic cells (DCs) are specialized cells of the innate immune system that are characterized by their ability to take up, process and present antigens (Ag) to effector T cells. They are derived from DC precursors produced in the bone marrow. Different DC subsets have been described according to lineage-specific transcription factors required for their development and function. Functionally, DCs are responsible for inducing Ag-specific immune responses that mediate organ transplant rejection. Consequently, to prevent anti-donor immune responses, therapeutic strategies have been directed toward the inhibition of DC activation. In addition however, an extensive body of preclinical research, using transplant models in rodents and nonhuman primates, has established a central role of DCs in the negative regulation of alloimmune responses. As a result, DCs have been employed as cell-based immunotherapy in early phase I/II clinical trials in organ transplantation. Together with in vivo targeting through use of myeloid cell-specific nanobiologics, DC manipulation represents a promising approach for the induction of transplantation tolerance. In this review, we summarize fundamental characteristics of DCs and their roles in promotion of central and peripheral tolerance. We also discuss their clinical application to promote improved long-term outcomes in organ transplantation.
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Affiliation(s)
- Jordi Ochando
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Immunología de Trasplantes, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Farideh Ordikhani
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Stefan Jordan
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Peter Boros
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Angus W Thomson
- Department of Surgery and Department of Immunology, Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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33
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Immature dendritic cells derived exosomes promotes immune tolerance by regulating T cell differentiation in renal transplantation. Aging (Albany NY) 2019; 11:8911-8924. [PMID: 31655796 PMCID: PMC6834404 DOI: 10.18632/aging.102346] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 09/27/2019] [Indexed: 12/22/2022]
Abstract
Objective: To investigate the mechanism of immature dendritic cells-derived exosomes (imDECs) in the regulation of T cell differentiation and immune tolerance in renal allograft model mice. Results: imDECs significantly improved the percent of survival, relieved inflammatory response, and reduced CD4+T cell infiltration. In addition, imDECs reduced the rejection associated cytokines in allograft mice, and increased the percentage of Foxp3+CD4+T cells in spleen and kidney tissues. imDECs suppressed the IL17+CD4+T cells and promoted the Foxp3+CD4+T cells under Th17 polarization condition. Moreover, miR-682 was found to be highly expressed in imDECs which suppressed the IL17+CD4+T cells and promoted the Foxp3+CD4+T cells. Luciferase reporter assay showed ROCK2 was a target of miR-682, and ROCK mRNA level was negative correlated with miR-682 mRNA level. Conclusion: miR-682 was highly expressed in imDECs, and imDECs-secreted miR-682 promoted Treg cell differentiation by negatively regulating ROCK2 to promote immune tolerance in renal allograft model mice. Methods: Renal allograft model mice were established, and imDECs or mature dendritic cells-derived exosomes (mDECs) were injected into model mice. Rejection associated cytokines IFN-γ, IL-2, IL-17 levels in plasma were detected by ELISA. IL-17A, Foxp3, miR-682, ROCK2, p-STAT3, p-STAT5 expressions were measured by qRT-PCR or western blot.
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34
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Li QC, Liang Y, Su ZB. Prophylactic treatment with MSC-derived exosomes attenuates traumatic acute lung injury in rats. Am J Physiol Lung Cell Mol Physiol 2019; 316:L1107-L1117. [PMID: 30892077 DOI: 10.1152/ajplung.00391.2018] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The mesenchymal stem cell (MSC) is a potential strategy in the pretreatment of traumatic acute lung injury (ALI), a disease that causes inflammation and oxidative stress. This study aimed to investigate whether MSC-exosomal microRNA-124-3p (miR-124-3p) affects traumatic ALI. Initially, a traumatic ALI rat model was established using the weight-drop method. Then, exosomes were obtained from MSCs of Sprague-Dawley rats, which were injected into the traumatic ALI rats. We found that miR-124-3p was abundantly-expressed in MSCs-derived exosomes and could directly target purinergic receptor P2X ligand-gated ion channel 7 (P2X7), which was overexpressed in traumatic ALI rats. After that, a loss- and gain-of-function study was performed in MSCs and traumatic ALI rats to investigate the role of miR-124-3p and P2X7 in traumatic ALI. MSC-derived exosomal miR-124-3p or silenced P2X7 was observed to increase the survival rate of traumatic ALI rats and enhance the glutathione/superoxide dismutase activity in their lung tissues. However, the wet/dry weight of lung tissues, activity of methylenedioxyamphetamine and H2O2, and levels of inflammatory factors (TNF-a, IL-6, and IL-8) were reduced. Similarly, the numbers of total cells, macrophages, neutrophils, and lymphocytes in bronchoalveolar lavage fluid were also reduced when treated with exosomal miR-124-3p or silenced P2X7. In conclusion, the results provide evidence that miR-124-3p transferred by MSC-derived exosomes inhibited P2X7 expression, thus improving oxidative stress injury and suppressing inflammatory response in traumatic ALI, highlighting a potential pretreatment for traumatic ALI.
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Affiliation(s)
- Qing-Chun Li
- Department of Gastrointestinal Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, People’s Republic of China
| | - Yun Liang
- Center of Physical Examination, China-Japan Union Hospital of Jilin University, Changchun, People’s Republic of China
| | - Zhen-Bo Su
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, People’s Republic of China
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35
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Abstract
BACKGROUND Regulatory T (Treg) cell-based immunotherapies have been studied as potential cell-based modalities for promoting transplant survival. However, the efficacy of local delivery of Treg cells in corneal transplantation has not been fully elucidated. Herein, we investigated the kinetics of migration of subconjunctivally injected Treg cells and their role in promoting corneal allograft survival. METHODS GFPCD4CD25Foxp3 Treg cells were isolated from draining lymph nodes (DLNs) of GFP transgenic mice and were subconjunctivally injected to corneal allograft recipients. Next, Treg cells, conventional T cells (Tconv) or a combination of both was locally injected to graft recipients, and graft survival was determined by evaluating opacity scores for 10 weeks. Transplanted mice without treatment served as controls. The frequencies of major histocompatibility complex-IICD11b antigen-presenting cells, IFNγCD4 Th1 cells, and CD45 cells in the DLNs and cornea were evaluated at week 2 posttransplantation using flow cytometry. Expressions of IFNγ, IL-10 and TGF-β in the grafts were assessed using reverse transcription polymerase chain reaction and enzyme-linked immunosorbent assay. RESULTS GFP Treg cells were detected in the ipsilateral cornea and DLNs of recipients 6 hours after injection. Subconjunctival injection of Treg cells significantly decreased the frequencies of mature antigen-presenting cells in the graft and DLNs, suppressed Th1 frequencies in DLNs, and inhibited CD45 cell infiltration to the graft. Finally, locally delivered Treg cells significantly reduced the expression of IFN-γ, enhanced the levels of IL-10 and TGF-β in the graft, and promoted long-term allograft survival. CONCLUSIONS Our study elucidates the kinetics of migration of locally delivered Treg cells and shows their role in suppressing host immune response against the allograft.
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36
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Veerman RE, Güçlüler Akpinar G, Eldh M, Gabrielsson S. Immune Cell-Derived Extracellular Vesicles – Functions and Therapeutic Applications. Trends Mol Med 2019; 25:382-394. [DOI: 10.1016/j.molmed.2019.02.003] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/05/2019] [Accepted: 02/08/2019] [Indexed: 12/15/2022]
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37
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Zeng Q, Yuan XY, Li W, Liu BW, Zhao X, Ren GJ, Wang Y, Dou J, Wang GY. Effects of tacrolimus (FK506) and mycophenolate mofetil (MMF) on regulatory T cells and co-inhibitory receptors in the peripheral blood of human liver allograft patients. Immunopharmacol Immunotoxicol 2019; 41:380-385. [PMID: 30633591 DOI: 10.1080/08923973.2018.1533026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qiang Zeng
- Department of Hepatobiliary Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiao-Ye Yuan
- Department of Gerontology, Hebei General Hospital, Shijiazhuang, China
| | - Wei Li
- Experimental Center, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Bao-Wang Liu
- Department of Hepatobiliary Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xin Zhao
- Department of Hepatobiliary Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Gui-Jun Ren
- Department of Hepatobiliary Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yang Wang
- Department of Hepatobiliary Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jian Dou
- Department of Hepatobiliary Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Gui-Ying Wang
- Department of General Surgery, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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38
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Jin X, Hu M, Gong L, Li H, Wang Y, Ji M, Li H. Adoptive transfer of xenoantigen‑stimulated T cell receptor Vβ‑restricted human regulatory T cells prevents porcine islet xenograft rejection in humanized mice. Mol Med Rep 2018; 18:4457-4467. [PMID: 30221725 PMCID: PMC6172378 DOI: 10.3892/mmr.2018.9471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 08/03/2018] [Indexed: 02/05/2023] Open
Abstract
Polyclonal expansion of human regulatory T cells (Tregs) prevents xenogeneic rejection by suppressing effector T cell responses in vitro and in vivo. However, a major limitation to using polyclonally expanded Tregs is that they may cause pan‑immunosuppressive effects. The present study was conducted to compare the ability of ex vivo expanded human xenoantigen‑stimulated Tregs (Xeno‑Treg) and polyclonal Tregs (Poly‑Treg) to protect islet xenografts from rejection in NOD‑SCID interleukin (IL)‑2 receptor (IL2r)γ‑/‑ mice. Human cluster of differentiation (CD)4+CD25+CD127lo Tregs, expanded either by stimulating with porcine peripheral blood mononuclear cells (PBMCs) or anti‑CD3/CD28 beads, were characterized by immune cell phenotyping, T cell receptor (TCR) Vβ CDR3 spectratyping and performing suppressive activity assays in vitro. The efficiency of adoptively transferred ex vivo human Tregs was evaluated in vivo using neonatal porcine islet cell clusters (NICC) transplanted into NOD‑SCID IL‑2rγ‑/‑ mice, which received human PBMCs with or without Xeno‑Treg or Poly‑Treg. Xeno‑Treg, which expressed increased levels of human leukocyte antigen‑DR and secreted higher levels of IL‑10, demonstrated enhanced suppressive capacity in a pig‑human mixed lymphocyte reaction. Spectratypes of TCR Vβ4, Vβ10, Vβ18 and Vβ20 in Xeno‑Treg showed restriction and expanded clones at sizes of 205, 441, 332 and 196 respectively, compared to those of Poly‑Treg. Reconstitution of mice with human PBMCs and Poly‑Treg resulted in NICC xenograft rejection at 63 days. Adoptive transfer with human PBMCs and Xeno‑Treg prolonged islet xenograft survival beyond 84 days, with grafts containing intact insulin‑secreting cells surrounded by a small number of human CD45+ cells. This study demonstrated that adoptive transfer of ex vivo expanded human Xeno‑Treg may potently prevent islet xenograft rejection in humanized NOD‑SCID IL2rγ‑/‑ mice compared with Poly‑Treg. These findings suggested that adoptive Treg therapy may be used for immunomodulation in islet xenotransplantation by minimizing systemic immunosuppression.
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Affiliation(s)
- Xi Jin
- Institute of Urology, Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Min Hu
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW 2145, Australia
| | - Lina Gong
- Institute of Urology, Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Huifang Li
- Cellular Biology Laboratory, Core Facility of West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yan Wang
- Cellular Biology Laboratory, Core Facility of West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Ming Ji
- Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan 410083, P.R. China
| | - Hong Li
- Institute of Urology, Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Emam SE, Ando H, Abu Lila AS, Kobayashi S, Shimizu T, Okuhira K, Ishima Y, Ishida T. Doxorubicin Expands in Vivo Secretion of Circulating Exosome in Mice. Biol Pharm Bull 2018; 41:1078-1083. [PMID: 29962402 DOI: 10.1248/bpb.b18-00202] [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] [Indexed: 11/22/2022]
Abstract
Modulation of tumor immunity is a known factor in the antitumor activity of many chemotherapeutic agents. Exosomes are extracellular nanometric vesicles that are released by almost all types of cells, which includes cancer cells. These vesicles play a crucial role in tumor immunity. Many in vitro studies have reproduced the aggressive secretion of exosomes following treatment with conventional anticancer drugs. Nevertheless, how chemotherapeutic agents including nanomedicines such as Doxil® affect the in vivo secretion of exosomes is yet to be elucidated. In this study, the effect of intravenous injection of either free doxorubicin (DXR) or liposomal DXR formulation (Doxil®) on exosome secretion was evaluated in BALB/c mice. Exosomes were isolated from serum by using an ExoQuick™ kit. Free DXR treatment markedly increased serum exosome levels in a post-injection time-dependent manner, while Doxil® treatment did not. Exosomal size distribution and marker protein expressions (CD9, CD63, and TSG101) were studied. The physical/biological characteristics of treatment-induced exosomes were comparable to those of control mice. Interestingly, splenectomy significantly suppressed the copious exosomal secretions induced by free DXR. Collectively, our results indicate that conventional anticancer agents induce the secretion of circulating exosomes, presumably via stimulating immune cells of the spleen. As far as we know, this study represents the first report indicating that conventional chemotherapeutics may induce exosome secretion which might, in turn, contribute partly to the antitumor effect of chemotherapeutic agents.
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Affiliation(s)
- Sherif E Emam
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University.,Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University
| | - Hidenori Ando
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University
| | - Amr Selim Abu Lila
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University.,Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University.,Department of Pharmaceutics, College of Pharmacy, Hail University
| | - Shinya Kobayashi
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University
| | - Taro Shimizu
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University
| | - Keiichiro Okuhira
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University
| | - Yu Ishima
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University
| | - Tatsuhiro Ishida
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University
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Thomson AW, Ezzelarab MB. Regulatory dendritic cells: profiling, targeting, and therapeutic application. Curr Opin Organ Transplant 2018; 23:538-545. [PMID: 30036199 PMCID: PMC6620776 DOI: 10.1097/mot.0000000000000565] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE OF REVIEW There is currently increased focus on improved understanding of how dendritic cell tolerogenicity is determined and maintained, and on their therapeutic potential. We review recent progress in profiling of regulatory dendritic cells (DCreg), innovative approaches to enhancing dendritic cell tolerogenicity in situ, ex-vivo generation of DCreg and initial clinical testing of these cells in organ transplantation. RECENT FINDINGS "Omics' studies indicate that the distinctive properties of DCreg are the result of a specific transcriptional program characterized by activation of tolerance-enhancing genes, rather than the retention of an immature state. In situ dendritic cell-directed targeting of nanovesicles bearing immune regulatory molecules can trigger in-vivo expansion of Ag-specific regulatory cells. Innovative approaches to ex-vivo modification of dendritic cells to enhance their regulatory function and capacity to migrate to secondary lymphoid organs has been described. Cross-dressing (with donor major histocompatibility complex molecules) of graft-infiltrating host dendritic cells that regulate antidonor T-cell responses has been implicated in "spontaneous' liver transplant tolerance. Clinical trials of DCreg therapy have begun in living donor renal and liver transplantation. SUMMARY Further definition of molecules that can be targeted to promote the function and stability of DCreg in vivo may lead to standardization of DCreg manufacturing for therapeutic application.
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Affiliation(s)
- Angus W Thomson
- Department of Surgery, Thomas E. Starzl Transplantation Institute
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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Exosome-Mimetic Nanovesicles from Hepatocytes promote hepatocyte proliferation in vitro and liver regeneration in vivo. Sci Rep 2018; 8:2471. [PMID: 29410409 PMCID: PMC5802835 DOI: 10.1038/s41598-018-20505-y] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 01/19/2018] [Indexed: 12/14/2022] Open
Abstract
The liver has great regenerative capacity after functional mass loss caused by injury or disease. Many studies have shown that primary hepatocyte-derived exosomes, which can deliver biological information between cells, promote the regenerative process of the liver. However, the yield of exosomes is very limited. Recent studies have demonstrated that exosome-mimetic nanovesicles (NVs) can be prepared from cells with almost 100 times the production yield compared with exosomes. Thus, this study investigated the therapeutic capacity of exosome-mimetic NVs from primary hepatocytes in liver regeneration. Exosome-mimetic NVs were prepared by serial extrusions of cells through polycarbonate membranes, and the yield of these NVs was more than 100 times that of exosomes. The data indicated that the NVs could promote hepatocyte proliferation and liver regeneration by significantly enhancing the content of sphingosine kinase 2 in recipient cells. To the best of our knowledge, this is the first time that exosome-mimetic NVs from primary hepatocytes have been prepared, and these NVs have components similar to exosomes from primary hepatocytes and, in some respects, biofunctions similar to exosomes. Strategies inspired by this study may lead to substitution of exosomes with exosome-mimetic NVs for biofunctional purposes, including utilization in tissue repair and regeneration.
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Kim SM, Kim HS. Engineering of extracellular vesicles as drug delivery vehicles. Stem Cell Investig 2017; 4:74. [PMID: 29057246 DOI: 10.21037/sci.2017.08.07] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 08/21/2017] [Indexed: 12/31/2022]
Abstract
Extracellular vesicles (EVs) are secreted membrane-enclosed nano-sized particles (40-1,000 nm) that deliver biological information between cells. The molecular composition of these subcellular particles includes growth factor receptors, ligands adhesion proteins, mRNA, miRNAs, lncRNA and lipids that are derived from donor cells. A number of studies demonstrated that stem cell-derived EVs are the key mediator of tissue repair and regeneration in multiple animal disease models. In addition, the composition of these particles is known to be altered in cancer and disease pathology suggesting them for useful in diagnostic and therapeutic purposes. Their endogenous origin and biological properties offer benefits over conventional drug delivery systems (DDS), such as liposome, synthetic nanoparticles and prompted the further application of EVs as drug delivery vehicles for chemical drugs, genetic materials and proteins. The contents of EVs can be efficiently modified by chemical, biological or physical means. Thus, EVs can be an innovative DDS as it can overcome physical and biological barriers and safely deliver therapeutic drugs to target tissues. In this minireview, we summarized current progress on the strategies of drug loading onto EVs; ex vivo and in vivo loading.
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Affiliation(s)
- Sung-Man Kim
- Medical Management Department, College of Medical Convergence, Catholic Kwandong University, Gangneung-si, Gangwon-do, Republic of Korea
| | - Han-Soo Kim
- Department of Biomedical Sciences, College of Medical Convergence, Catholic Kwandong University, Gangneung-si, Gangwon-do, Republic of Korea
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Cai S, Fujino M, Lu L, Li XK. In vivo Priming of T Cells with in vitro Pulsed Dendritic Cells: Popliteal Lymph Node Assay. Bio Protoc 2017; 7:e2531. [PMID: 34541187 DOI: 10.21769/bioprotoc.2531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/06/2017] [Accepted: 08/07/2017] [Indexed: 11/02/2022] Open
Abstract
One-way mixed lymphocyte reaction (MLR) is a classic tool to measure how T cells react to external stimuli. However, MLR is an in vitro reaction system, which shows different response intensity compared with in vivo trails sometimes due to the lack of cytokines, tissue matrix and other immune response associated factors. The following popliteal lymph node assay (PLNA) protocol is designed to test the T cells antigen-specific reaction in vivo by using ovalbumin (OVA) specific reacted transgenic mouse OT-1 and OT-2.
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Affiliation(s)
- Songjie Cai
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, Japan
| | - Masayuki Fujino
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, Japan.,AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Lina Lu
- Department of Immunology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Xiao-Kang Li
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, Japan
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Morelli AE, Bracamonte-Baran W, Burlingham WJ. Donor-derived exosomes: the trick behind the semidirect pathway of allorecognition. Curr Opin Organ Transplant 2017; 22:46-54. [PMID: 27898464 PMCID: PMC5407007 DOI: 10.1097/mot.0000000000000372] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE OF REVIEW The passenger leukocyte hypothesis predicts that after transplantation, donor antigen-presenting cells (APCs) from the graft present donor MHC molecules to directly alloreactive T cells in lymphoid organs. However, in certain transplantation models, recent evidence contradicts this long-standing concept. New findings demonstrate that host, instead of donor, APCs play a prominent role in allosensitization against donor MHC molecules via the semidirect pathway. A similar mechanism operates in development of T-cell split tolerance to noninherited maternal antigens. RECENT FINDINGS Following fully mismatch skin or heart transplantation in mice, no or extremely few donor migrating APCs (i.e. conventional dendritic cells) are detected in the draining lymphoid organs. Instead, recipient dendritic cells that have captured donor extracellular vesicles (i.e. exosomes) carrying donor MHC molecules and APC costimulatory signals present donor MHC molecules to directly alloreactive T cells. This semidirect pathway can also give rise to a form of 'split' tolerance during chronic alloantigen exposure, as indirectly alloreactive T helper cells and directly alloreactive T-cell effectors are differentially impacted by host dendritic cells 'cross-dressed' with extracellular vesicles/exosomes derived from maternal microchimerism. SUMMARY Acquisition by recipient APCs of donor exosomes (and likely other extracellular vesicles) released by passenger leukocytes or the graft explains the potent T-cell allosensitization against donor MHC molecules, in the absence or presence of few passenger leukocytes in lymphoid organs. It also provides the basic mechanism and in-vivo relevance of the elusive semidirect pathway. Its degree of coordination with the allopeptide - specific, indirect pathway of T-cell help may determine whether semidirect allopresentation results in a sustained, effective, acute rejection response, or rather, in abortive acute rejection and 'split' tolerance.
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Affiliation(s)
- Adrian E Morelli
- aT.E. Starzl Transplantation Institute, Department of Surgery and Immunology, University of Pittsburgh, Pittsburgh, Pennsylvania bDivision of Immunology, Department of Pathology, Johns Hopkins University, Baltimore, Maryland cDivision of Transplantation, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
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