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Pollard JM, Hynes G, Yin D, Mandal M, Gounari F, Alegre ML, Chong AS. Pregnancy dedifferentiates memory CD8+ T cells into hypofunctional cells with exhaustion-enriched programs. JCI Insight 2024; 9:e176381. [PMID: 38771643 DOI: 10.1172/jci.insight.176381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 05/15/2024] [Indexed: 05/23/2024] Open
Abstract
Alloreactive memory, unlike naive, CD8+ T cells resist transplantation tolerance protocols and are a critical barrier to long-term graft acceptance in the clinic. We here show that semiallogeneic pregnancy successfully reprogrammed memory fetus/graft-specific CD8+ T cells (TFGS) toward hypofunction. Female C57BL/6 mice harboring memory CD8+ T cells generated by the rejection of BALB/c skin grafts and then mated with BALB/c males achieved rates of pregnancy comparable with naive controls. Postpartum CD8+ TFGS from skin-sensitized dams upregulated expression of T cell exhaustion (TEX) markers (Tox, Eomes, PD-1, TIGIT, and Lag3). Transcriptional analysis corroborated an enrichment of canonical TEX genes in postpartum memory TFGS and revealed a downregulation of a subset of memory-associated transcripts. Strikingly, pregnancy induced extensive epigenetic modifications of exhaustion- and memory-associated genes in memory TFGS, whereas minimal epigenetic modifications were observed in naive TFGS. Finally, postpartum memory TFGS durably expressed the exhaustion-enriched phenotype, and their susceptibility to transplantation tolerance was significantly restored compared with memory TFGS. These findings advance the concept of pregnancy as an epigenetic modulator inducing hypofunction in memory CD8+ T cells that has relevance not only for pregnancy and transplantation tolerance, but also for tumor immunity and chronic infections.
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Affiliation(s)
| | - Grace Hynes
- Section of Transplantation, Department of Surgery, and
| | - Dengping Yin
- Section of Transplantation, Department of Surgery, and
| | - Malay Mandal
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Fotini Gounari
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, Illinois, USA
- Department of Immunology, Mayo Clinic, Phoenix, Arizona, USA
| | - Maria-Luisa Alegre
- Section of Rheumatology, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Anita S Chong
- Section of Transplantation, Department of Surgery, and
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2
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Nicosia M, Valujskikh A. Recognizing Complexity of CD8 T Cells in Transplantation. Transplantation 2024:00007890-990000000-00734. [PMID: 38637929 DOI: 10.1097/tp.0000000000005001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The major role of CD8+ T cells in clinical and experimental transplantation is well documented and acknowledged. Nevertheless, the precise impact of CD8+ T cells on graft tissue injury is not completely understood, thus impeding the development of specific treatment strategies. The goal of this overview is to consider the biology and functions of CD8+ T cells in the context of experimental and clinical allotransplantation, with special emphasis on how this cell subset is affected by currently available and emerging therapies.
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Affiliation(s)
- Michael Nicosia
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
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3
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Negi S, Rutman AK, Saw CL, Paraskevas S, Tchervenkov J. Pretransplant, Th17 dominant alloreactivity in highly sensitized kidney transplant candidates. FRONTIERS IN TRANSPLANTATION 2024; 3:1336563. [PMID: 38993777 PMCID: PMC11235243 DOI: 10.3389/frtra.2024.1336563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 03/21/2024] [Indexed: 07/13/2024]
Abstract
Introduction Sensitization to donor human leukocyte antigen (HLA) molecules prior to transplantation is a significant risk factor for delayed access to transplantation and to long-term outcomes. Memory T cells and their cytokines play a pivotal role in shaping immune responses, thereby increasing the risk of allograft rejection among highly sensitized patients. This study aims to elucidate the precise contribution of different CD4+ memory T cell subsets to alloreactivity in highly sensitized (HS) kidney transplant recipients. Methods and results Stimulation of peripheral blood mononuclear cells (PBMC) with various polyclonal stimulating agents to assess non-specific immune responses revealed that HS patients exhibit elevated immune reactivity even before kidney transplantation, compared to non-sensitized (NS) patients. HS patients' PBMC displayed higher frequencies of CD4+ T cells expressing IFNγ, IL4, IL6, IL17A, and TNFα and secreted relatively higher levels of IL17A and IL21 upon stimulation with PMA/ionomycin. Additionally, PBMC from HS patients stimulated with T cell stimulating agent phytohemagglutinin (PHA) exhibited elevated expression levels of IFNγ, IL4 and, IL21. On the other hand, stimulation with a combination of resiquimod (R848) and IL2 for the activation of memory B cells demonstrated higher expression of IL17A, TNFα and IL21, as determined by quantitative real-time PCR. A mixed leukocyte reaction (MLR) assay, employing third-party donor antigen presenting cells (APCs), was implemented to evaluate the direct alloreactive response. HS patients demonstrated notably higher frequencies of CD4+ T cells expressing IL4, IL6 and IL17A. Interestingly, APCs expressing recall HLA antigens triggered a stronger Th17 response compared to APCs lacking recall HLA antigens in sensitized patients. Furthermore, donor APCs induced higher activation of effector memory T cells in HS patients as compared to NS patients. Conclusion These results provide an assessment of pretransplant alloreactive T cell subsets in highly sensitized patients and emphasize the significance of Th17 cells in alloimmune responses. These findings hold promise for the development of treatment strategies tailored to sensitized kidney transplant recipients, with potential clinical implications.
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Affiliation(s)
- Sarita Negi
- Infectious Diseases and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
- Human Islet Transplantation Laboratory, McGill University Health Centre, Montréal, QC, Canada
| | | | - Chee Loong Saw
- HLA Laboratory, Division of Hematology, McGill University Health Centre, Montréal, QC, Canada
| | - Steven Paraskevas
- Infectious Diseases and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
- Human Islet Transplantation Laboratory, McGill University Health Centre, Montréal, QC, Canada
- Department of Surgery, McGill University, Montréal, QC, Canada
- Division of General Surgery and Multi-Organ Transplant Program, Department of Surgery, McGill University Health Centre, Montréal, QC, Canada
| | - Jean Tchervenkov
- Infectious Diseases and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
- Department of Surgery, McGill University, Montréal, QC, Canada
- Division of General Surgery and Multi-Organ Transplant Program, Department of Surgery, McGill University Health Centre, Montréal, QC, Canada
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4
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Alexander KL, Ford ML. The Entangled World of Memory T Cells and Implications in Transplantation. Transplantation 2024; 108:137-147. [PMID: 37271872 PMCID: PMC10696133 DOI: 10.1097/tp.0000000000004647] [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: 06/06/2023]
Abstract
Memory T cells that are specific for alloantigen can arise from a variety of stimuli, ranging from direct allogeneic sensitization from prior transplantation, blood transfusion, or pregnancy to the elicitation of pathogen-specific T cells that are cross-reactive with alloantigen. Regardless of the mechanism by which they arise, alloreactive memory T cells possess key metabolic, phenotypic, and functional properties that render them distinct from naive T cells. These properties affect the immune response to transplantation in 2 important ways: first, they can alter the speed, location, and effector mechanisms with which alloreactive T cells mediate allograft rejection, and second, they can alter T-cell susceptibility to immunosuppression. In this review, we discuss recent developments in understanding these properties of memory T cells and their implications for transplantation.
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Affiliation(s)
| | - Mandy L. Ford
- Emory Transplant Center, Emory University, Atlanta, GA
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5
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Singh AK, Goerlich CE, Zhang T, Lewis BG, Hershfeld A, Mohiuddin MM. CD40-CD40L Blockade: Update on Novel Investigational Therapeutics for Transplantation. Transplantation 2023; 107:1472-1481. [PMID: 36584382 PMCID: PMC10287837 DOI: 10.1097/tp.0000000000004469] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Effective immune responses require antigen presentation by major histocompatibility complexes with cognate T-cell receptor and antigen-independent costimulatory signaling for T-cell activation, proliferation, and differentiation. Among several costimulatory signals, CD40-CD40L is of special interest to the transplantation community because it plays a vital role in controlling or regulating humoral and cellular immunity. Blockade of this pathway has demonstrated inhibition of donor-reactive T-cell responses and prolonged the survival of transplanted organs. Several anti-CD154 and anti-CD40 antibodies have been used in the transplantation model and demonstrated the potential of extending allograft and xenograft rejection-free survival. The wide use of anti-CD154 antibodies was hampered because of thromboembolic complications in transplant recipients. These antibodies have been modified to overcome the thromboembolic complications by altering the antibody binding fragment (Fab) and Fc (fragment, crystallizable) receptor region for therapeutic purposes. Here, we review recent preclinical advances to target the CD40-CD40L pair in transplantation.
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Affiliation(s)
| | | | - Tianshu Zhang
- University of Maryland School of Medicine, Baltimore, MD
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6
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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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7
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Andrade MS, Young JS, Pollard JM, Yin D, Alegre ML, Chong AS. Linked sensitization by memory CD4+ T cells prevents costimulation blockade–induced transplantation tolerance. JCI Insight 2022; 7:159205. [PMID: 35674134 PMCID: PMC9220839 DOI: 10.1172/jci.insight.159205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/22/2022] [Indexed: 11/17/2022] Open
Abstract
Dominant infectious tolerance explains how brief tolerance-inducing therapies result in lifelong tolerance to donor antigens and “linked” third-party antigens, while recipient sensitization and ensuing immunological memory prevent the successful induction of transplant tolerance. In this study, we juxtapose these 2 concepts to test whether mechanisms of dominant infectious tolerance can control a limited repertoire of memory T and B cells. We show that sensitization to a single donor antigen is sufficient to prevent stable transplant tolerance, rendering it unstable. Mechanistic studies revealed that recall antibody responses and memory CD8+ T cell expansion were initially controlled, but memory CD4+Foxp3– T cell (Tconv) responses were not. Remarkably, naive donor-specific Tconvs at tolerance induction also acquired a resistance to tolerance, proliferating and acquiring a phenotype similar to memory Tconvs. This phenomenon of “linked sensitization” underscores the challenges of reprogramming a primed immune response toward tolerance and identifies a potential therapeutic checkpoint for synergizing with costimulation blockade to achieve transplant tolerance in the clinic.
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8
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Abstract
In this review, we summarize and discuss recent advances in understanding the characteristics of tissue-resident memory T cells (TRMs) in the context of solid organ transplantation (SOT). We first introduce the traditionally understood noncirculating features of TRMs and the key phenotypic markers that define this population, then provide a detailed discussion of emerging concepts on the recirculation and plasticity of TRM in mice and humans. We comment on the potential heterogeneity of transient, temporary resident, and permanent resident T cells and potential interchangeable phenotypes between TRM and effector T cells in nonlymphoid tissues. We review the literature on the distribution of TRM in human nonlymphoid organs and association of clinical outcomes in different types of SOT, including intestine, lung, liver, kidney, and heart. We focus on both tissue-specific and organ-shared features of donor- and recipient-derived TRMs after transplantation whenever applicable. Studies with comprehensive sample collection, including longitudinal and cross-sectional controls, and applied advanced techniques such as multicolor flow cytometry to distinguish donor and recipient TRMs, bulk, and single-cell T-cell receptor sequencing to track clonotypes and define transcriptome profiles, and functional readouts to define alloreactivity and proinflammatory/anti-inflammatory activities are emphasized. We also discuss important findings on the tissue-resident features of regulatory αβ T cells and unconventional γδ T cells after transplantation. Understanding of TRM in SOT is a rapidly growing field that urges future studies to address unresolved questions regarding their heterogeneity, plasticity, longevity, alloreactivity, and roles in rejection and tolerance.
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Affiliation(s)
- Jianing Fu
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, United States
| | - Megan Sykes
- Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, United States
- Department of Surgery, Columbia University, New York, United States
- Department of Microbiology & Immunology, Columbia University, New York, United States
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9
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Optimal Immunosuppression Strategy in the Sensitized Kidney Transplant Recipient. J Clin Med 2021; 10:jcm10163656. [PMID: 34441950 PMCID: PMC8396983 DOI: 10.3390/jcm10163656] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/09/2021] [Accepted: 08/15/2021] [Indexed: 01/10/2023] Open
Abstract
Patients with previous sensitization events against anti-human leukocyte antigens (HLA) often have circulating anti-HLA antibodies. Following organ transplantation, sensitized patients have higher rates of antibody-mediated rejection (AMR) compared to those who are non-sensitized. More stringent donor matching is required for these patients, which results in a reduced donor pool and increased time on the waitlist. Current approaches for sensitized patients focus on reducing preformed antibodies that preclude transplantation; however, this type of desensitization does not modulate the primed immune response in sensitized patients. Thus, an optimized maintenance immunosuppressive regimen is necessary for highly sensitized patients, which may be distinct from non-sensitized patients. In this review, we will discuss the currently available therapeutic options for induction, maintenance, and adjuvant immunosuppression for sensitized patients.
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10
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Imaging Tolerance Induction in Neonatal Mice: Hierarchical Interplay Between Allogeneic Adult and Neonatal Immune Cells. Transplantation 2021; 105:1730-1746. [PMID: 33273316 DOI: 10.1097/tp.0000000000003566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND In Medawar's murine neonatal tolerance model, injection of adult semiallogeneic lymphohematopoietic cells (spleen cells [SC] and bone marrow cells [BMC]) tolerizes the neonatal immune system. An eventual clinical application would require fully allogeneic (allo) cells, yet little is known about the complex in vivo/in situ interplay between those cells and the nonconditioned neonatal immune system. METHODS To this end, labeled adult SC and BMC were injected into allogeneic neonates; interactions between donor and host cells were analyzed and modulated by systematic depletion/inactivation of specific donor and host immune effector cell types. RESULTS Consistent with effector cell compositions, allo-SC and allo-SC/BMC each induced lethal acute graft-versus-host disease, whereas allo-BMC alone did so infrequently. CD8 T cells from SC inoculum appeared naïve, while those of BMC were more memory-like. Age-dependent, cell-type dominance defined the interplay between adult donor cells and the neonatal host immune system such that if the dominant adult effector type was removed, then the equivalent neonatal one became dominant. Depletion of donor/host peripheral T cells protected against acute graft-versus-host disease and prolonged heart allograft survival; peripheral CD8 T-cell depletion together with CD4 T cell-costimulation blockade induced more robust tolerance. CONCLUSIONS This comprehensive study provides direct observation of the cellular interplay between allogeneic donor and host immune systems, adds to our previous work with semiallogeneic donor cells, and provides important insights for robust tolerance induction. Induction of transplant tolerance in neonates will likely require "crowd sourcing" of multiple tolerizing cell types and involve depletion of immune effector cells with costimulation blockade.
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11
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Xi Y, Ma Y, Xie B, Di A, Xu S, Luo X, Wang C, Dai H, Yan G, Qi Z. Vitamin D3 combined with antibody agents suppresses alloreactive memory T-cell responses to induce heart allograft long-term survival. Transpl Immunol 2021; 66:101374. [PMID: 33592299 DOI: 10.1016/j.trim.2021.101374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND The pre-stored memory T cells in organ transplant patient carry a high risk of allograft rejection. The current study aimed to determine whether the allogenic response of adoptively transferred memory T cells in mice was suppressed by vitamin D3 monotherapy alone or in combination with monoclonal antibody treatment. METHODS Prior to vascularized heterotopic heart transplantation, naïve C57BL/6 mice were primed with memory T cells. Recipient mice were administered vitamin D3 alone or in combination with monoclonal antibodies (anti-CD40L/ anti-LFA-1). Memory T cells and CD4+ forkhead box P3+ T cells in recipient spleens were measured using flow cytometry. Additionally, the expression of cytokines was measured by ELISA and quantitative PCR. Inflammatory factors in the grafts were identified by hematoxylin and eosin staining. RESULTS Vitamin D3 in conjunction with anti-CD40L/ anti-LFA-1 antibodies were administered according to the median survival time from 6.5 to 80 days. The results revealed that grafts were protected through the prevention of inflammatory cell infiltration. Combined treatment decreased the mRNA levels of IL-2, IFN-γ and IL-10 and increased the mRNA levels of IL-4, Foxp3 and TGF-β in the allograft. Rejection was suppressed by a reduction of CD4+CD44high CD62L+ and CD8+ CD44high CD62L+ memory T cells, the induction of regulatory T cells in the recipient spleen and a reduction of serum IL-2, IFN-γ and IL-10 levels. CONCLUSION Vitamin D3 efficiently protected allografts from memory T-cell allo-responses when combined with anti-CD40L/anti-LFA-1 antibodies therapy.
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Affiliation(s)
- Yanfeng Xi
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China; The tumor hospital of Chang Zhou, Chang Zhou, Jiangsu, China
| | - Yunhan Ma
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Baiyi Xie
- Department of Urology Surgery, Ruikang Hospital affiliated to Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Anjie Di
- Basic Medical Department of Medical College, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Shuangyue Xu
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Xuewei Luo
- Medicinal College, Guangxi University, Nanning, Guangxi, China
| | - Chenxi Wang
- Basic Medical Department of Medical College, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Helong Dai
- Department of Kidney Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China; Clinical Research Center for Organ Transplantation in Hunan Province, Changsha, Hunan, China; Clinical Immunology Center, Central South University, Changsha, Hunan 410000, China.
| | - Guoliang Yan
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China; Basic Medical Department of Medical College, School of Medicine, Xiamen University, Xiamen, Fujian, China.
| | - Zhongquan Qi
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China; Medicinal College, Guangxi University, Nanning, Guangxi, China.
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12
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Muñoz M, Hegazy AN, Brunner TM, Holecska V, Marek RM, Fröhlich A, Löhning M. Th2 cells lacking T-bet suppress naive and memory T cell responses via IL-10. Proc Natl Acad Sci U S A 2021; 118:e2002787118. [PMID: 33526653 PMCID: PMC8017670 DOI: 10.1073/pnas.2002787118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Exacerbated immune responses and loss of self-tolerance lead to the development of autoimmunity and immunopathology. Novel therapies to target autoreactive T cells are still needed. Here, we report that Th2-polarized T cells lacking the transcription factor T-bet harbor strong immunomodulatory potential and suppress antigen-specific CD8+ T cells via IL-10. Tbx21-/- Th2 cells protected mice against virus-induced type 1 diabetes development and suppressed not only naive but also memory CD8+ T cell responses. IL-10-producing, but not IL-10-deficient Tbx21-/- Th2 cells down-regulated costimulatory molecules on dendritic cells and reduced their IL-12 production after lymphocytic choriomeningitis virus infection. Impaired dendritic cell activation hindered effector and cytotoxic CD8+ T cell development after infection. These findings indicate that Tbx21-/- Th2 cells strongly suppress proinflammatory responses of naive and memory T cells via IL-10. Thus, in vivo IL-10-secreting Th2 cells could harbor a therapeutic potential for the treatment of T cell-mediated inflammatory disorders.
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Affiliation(s)
- Melba Muñoz
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
- Dermatological Allergology, Allergie-Centrum-Charité, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Clinician Scientist Program, Berlin Institute of Health, 10178 Berlin, Germany
| | - Ahmed N Hegazy
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
- Clinician Scientist Program, Berlin Institute of Health, 10178 Berlin, Germany
- Department of Gastroenterology, Infectious Diseases and Rheumatology, Charité-Universitätsmedizin Berlin, 12203 Berlin, Germany
| | - Tobias M Brunner
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
| | - Vivien Holecska
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
| | - Roman M Marek
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
| | - Anja Fröhlich
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
| | - Max Löhning
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany;
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
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13
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Dangi A, Yu S, Lee FT, Burnette M, Knechtle S, Kwun J, Luo X. Donor apoptotic cell-based therapy for effective inhibition of donor-specific memory T and B cells to promote long-term allograft survival in allosensitized recipients. Am J Transplant 2020; 20:2728-2739. [PMID: 32275799 PMCID: PMC7896418 DOI: 10.1111/ajt.15878] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/12/2020] [Accepted: 03/18/2020] [Indexed: 01/25/2023]
Abstract
Allosensitization constitutes a major barrier in transplantation. Preexisting donor-reactive memory T and B cells and preformed donor-specific antibodies (DSAs) have all been implicated in accelerated allograft rejection in sensitized recipients. Here, we employ a sensitized murine model of islet transplantation to test strategies that promote long-term immunosuppression-free allograft survival. We demonstrate that donor-specific memory T and B cells can be effectively inhibited by peritransplant infusions of donor apoptotic cells in combination with anti-CD40L and rapamycin, and this treatment leads to significant prolongation of islet allograft survival in allosensitized recipients. We further demonstrate that late graft rejection in recipients treated with this regimen is associated with a breakthrough of B cells and their aggressive graft infiltration. Consequently, additional posttransplant B cell depletion effectively prevents late rejection and promotes permanent acceptance of islet allografts. In contrast, persistent low levels of DSAs do not seem to impair graft outcome in these recipients. We propose that B cells contribute to late rejection as antigen-presenting cells for intragraft memory T cell expansion but not to alloantibody production and that a therapeutic strategy combining donor apoptotic cells, anti-CD40L, and rapamycin effectively inhibits proinflammatory B cells and promotes long-term islet allograft survival in such recipients.
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Affiliation(s)
- Anil Dangi
- Division of Nephrology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Shuangjin Yu
- Division of Nephrology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Frances T. Lee
- Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Melanie Burnette
- Division of Nephrology, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Stuart Knechtle
- Department of Surgery, Duke University Medical Center, Durham, North Carolina,Duke Transplant Center, Duke University Medical Center, Durham, North Carolina
| | - Jean Kwun
- Department of Surgery, Duke University Medical Center, Durham, North Carolina,Duke Transplant Center, Duke University Medical Center, Durham, North Carolina
| | - Xunrong Luo
- Division of Nephrology, Department of Medicine, Duke University Medical Center, Durham, North Carolina,Duke Transplant Center, Duke University Medical Center, Durham, North Carolina
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14
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Zhu M, Ma Y, Tan K, Zhang L, Wang Z, Li Y, Chen Y, Guo J, Yan G, Qi Z. Thalidomide with blockade of co-stimulatory molecules prolongs the survival of alloantigen-primed mice with cardiac allografts. BMC Immunol 2020; 21:19. [PMID: 32299357 PMCID: PMC7164359 DOI: 10.1186/s12865-020-00352-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 04/07/2020] [Indexed: 01/20/2023] Open
Abstract
Background Miscellaneous memory cell populations that exist before organ transplantation are crucial barriers to transplantation. In the present study, we used a skin-primed heart transplantation model in mouse to evaluate the abilities of Thalidomide (TD), alone or in combination with co-stimulatory blockade, using monoclonal antibodies (mAbs) against memory T cells and alloantibodies to prolong the second cardiac survival. Results In the skin-primed heart transplantation model, TD combined with mAbs significantly prolonged the second cardiac survival, accompanied by inhibition of memory CD8+ T cells. This combined treatment enhanced the CD4+Foxp3+ regulatory T cells ratio in the spleen, restrained the infiltration of lymphocytes into the allograft, and suppressed the allo-response of spleen T cells in the recipient. The levels of allo-antibodies also decreased in the recipient serum. In addition, we detected low levels of the constitutions of the lytic machinery of cytotoxic cells, which cause allograft damage. Conclusions Our study indicated a potential synergistic action of TD in combination with with mAbs to suppress the function of memory T cells and increase the survival of second allografts in alloantigen-primed mice.
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Affiliation(s)
- Maoshu Zhu
- Xiang'an Branch, The First Affiliated Hospital of Xiamen University, Xiamen, 361100, Fujian, China.,The Fifth Hospital of Xiamen, Xiamen, 361100, Fujian, China
| | - Yunhan Ma
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China
| | - Kai Tan
- Grade 2015 Clinical Medicine, Fuzhou Medical College of Nanchang University, Fuzhou, 344000, Jiangxi, China
| | - Liyi Zhang
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China
| | - Zhaowei Wang
- Xiang'an Branch, The First Affiliated Hospital of Xiamen University, Xiamen, 361100, Fujian, China.,The Fifth Hospital of Xiamen, Xiamen, 361100, Fujian, China
| | - Yongsheng Li
- Xiang'an Branch, The First Affiliated Hospital of Xiamen University, Xiamen, 361100, Fujian, China.,The Fifth Hospital of Xiamen, Xiamen, 361100, Fujian, China
| | - Yingyu Chen
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China
| | - Junjun Guo
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China
| | - Guoliang Yan
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China. .,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China.
| | - Zhongquan Qi
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China. .,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China. .,School of Medicine, Guangxi University, Nanning, 530004, Guangxi, China.
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15
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Xie B, Ma Y, Xi Y, Di A, Chen X, Chen Y, Zhang L, Xu S, Wang C, Yan G, Qi Z. Combined treatment with vitamin D3 and antibody agents suppresses secondary heart transplant rejection in the early postoperative period. Transpl Immunol 2020; 59:101270. [PMID: 31953155 DOI: 10.1016/j.trim.2020.101270] [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: 11/06/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND Accelerated transplant rejection mediated by donor reactive memory T cells is another barrier to the induction of graft tolerance. The aim of this study was to investigate the immunosuppressing effects of vitamin D (1,25(OH)2D3), administered alone or in combination with a costimulatory blockade treatment, on rejection of secondary heart allografts in a mouse model. METHODS Circular full-thickness skin grafts from BALB/c mice were cut and grafted onto the lumbar regions of C57BL/6 mice as allo-primed recipients. Four weeks after skin grafting, the vascularized hearts from the BALB/c mice were transplanted heterotopically into the allo-primed recipients using a non-suture cuff technique. The recipients were then randomly divided into four groups and given either intraperitoneal injection of isotype, Ab, 1,25(OH)2D3, or a combination of Ab and 1,25(OH)2D3. Allograft incidence was determined by hematoxylin-eosin staining, and cytokine expression was assessed by the quantitative real-time polymerase chain reaction, enzyme-linked immunosorbent assays, and cytometric bead arrays. Spleen cells from the recipient were used to assess mixed lymphocyte reactions. Memory T cells and regulatory T cells (Tregs) in spleen cells were measured by flow cytometry. RESULTS The median allograft survival time was longer with the combined treatment with Ab and 1,25(OH)2D3 than with no treatment or with treatment with Ab or 1,25(OH)2D3 alone. The grafts were protected from infiltration by inflammatory cells and by inhibition of interleukin 2 and interferon gamma expression. Rejection was initially suppressed in the early postoperative period by a reduction in the number of memory T cells and induction of Foxp3+ Tregs, but this effect disappeared by day 15 after transplantation upon withdrawal of the treatment. CONCLUSION Vitamin D3 administered as an immunosuppressive agent, when combined with monoclonal antibody treatment, may protect heart grafts from memory T cell responses in a secondary heart transplant model.
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Affiliation(s)
- Baiyi Xie
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, Fujian, China; Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, Fujian, China; School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Yunhan Ma
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, Fujian, China; Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, Fujian, China; School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Yanfeng Xi
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, Fujian, China; Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, Fujian, China; School of Medicine, Xiamen University, Xiamen, Fujian, China; The Tumor Hospital of Changzhou, Changzhou, Jiangsu, China
| | - Anjie Di
- School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Xu Chen
- Xiamen Cardiovascular Hospital, Xiamen University, Xiamen, Fujian, China
| | - Yingyu Chen
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, Fujian, China; Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, Fujian, China; School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Liyi Zhang
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, Fujian, China; Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, Fujian, China; School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Shuangyue Xu
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, Fujian, China; Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, Fujian, China; School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Chenxi Wang
- School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Guoliang Yan
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, Fujian, China; Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, Fujian, China; School of Medicine, Xiamen University, Xiamen, Fujian, China.
| | - Zhongquan Qi
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, Fujian, China; Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, Fujian, China; Medical College, Guangxi University, Nanning, Guangxi, China.
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16
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Sellberg F, Berglund D, Binder C, Hope J, Fontenot J, Griesemer A, Sykes M, Sachs DH, Berglund E. Pharmacokinetic and pharmacodynamic study of a clinically effective anti-CD2 monoclonal antibody. Scand J Immunol 2019; 91:e12839. [PMID: 31630416 DOI: 10.1111/sji.12839] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 12/22/2022]
Abstract
The humanized IgG1κ monoclonal antibody siplizumab and its rat parent monoclonal IgG2b antibody BTI-322 are directed against the CD2 antigen. Siplizumab is species-specific, reacting with human and chimpanzee cells but not with cells from any other species, including other non-human primates. Because siplizumab treatment has recently shown great potential in clinical transplantation, we now present the results of our previous pharmacokinetic, pharmacodynamic and safety studies of both antibodies. Fourteen chimpanzees received 1-3 doses of 0.143 to 5.0 mg/kg iv The effects were followed with flow cytometry on peripheral lymphocytes and staining of lymph nodes. Side effects were recorded. Serum antibody concentrations were followed. Across the doses, a rapid, transient depletion of CD2, CD3, CD4 and CD8 lymphocytes and NK cells was observed for both antibodies. Immune reconstitution was more rapid for BTI-322 compared to siplizumab. Paracortical lymph node T cell depletion was moderate, estimated at 45% with doses of >0.6 mg/kg. Restoration of lymph node architecture was seen after two weeks to two months for all animals. All four subjects receiving BTI-322 experienced AEs on the first dosing day, while the eight subjects dosed with siplizumab experienced few mild, transient AEs. Infusion with siplizumab and BTI-322 resulted in rapid depletion of CD2+ cells in circulation and tissue. Siplizumab had a longer t1/2 and fewer AEs compared to BTI-322.
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Affiliation(s)
- Felix Sellberg
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden
| | - David Berglund
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden
| | - Christian Binder
- Department of Immunology, Genetics and Pathology, Section of Clinical Immunology, Uppsala University, Uppsala, Sweden
| | - James Hope
- Independent BioTechnology Consultants, Chicago, IL, USA
| | - Jane Fontenot
- University of Louisiana at Lafayette New Iberia Primate Research Center, New Iberia, LA, USA
| | - Adam Griesemer
- Department of Surgery, Columbia Center for Translational Immunology, Columbia University Medical Center, Columbia University, New York, NY, USA
| | - Megan Sykes
- Department of Surgery, Columbia Center for Translational Immunology, Columbia University Medical Center, Columbia University, New York, NY, USA
| | - David H Sachs
- Department of Surgery, Columbia Center for Translational Immunology, Columbia University Medical Center, Columbia University, New York, NY, USA
| | - Erik Berglund
- Department of Surgery, Columbia Center for Translational Immunology, Columbia University Medical Center, Columbia University, New York, NY, USA.,Division of Transplantation Surgery, Department of Transplantation Surgery, Karolinska Institute, CLINTEC, Karolinska University Hospital, Stockholm, Sweden
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17
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Kim JY, Kang BM, Lee JS, Park HJ, Wi HJ, Yoon JS, Ahn C, Shin S, Kim KH, Jung KC, Kwon O. UVB-induced depletion of donor-derived dendritic cells prevents allograft rejection of immune-privileged hair follicles in humanized mice. Am J Transplant 2019; 19:1344-1355. [PMID: 30500995 DOI: 10.1111/ajt.15207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/23/2018] [Accepted: 11/23/2018] [Indexed: 01/25/2023]
Abstract
Dendritic cells (DCs) are key targets for immunity and tolerance induction; they present donor antigens to recipient T cells by donor- and recipient-derived pathways. Donor-derived DCs, which are critical during the acute posttransplant period, can be depleted in graft tissue by forced migration via ultraviolet B light (UVB) irradiation. Here, we investigated the tolerogenic potential of donor-derived DC depletion through in vivo and ex vivo UVB preirradiation (UV) combined with the injection of anti-CD154 antibody (Ab) into recipients in an MHC-mismatched hair follicle (HF) allograft model in humanized mice. Surprisingly, human HF allografts achieved long-term survival with newly growing pigmented hair shafts in both Ab-treated groups (Ab-only and UV plus Ab) and in the UV-only group, whereas the control mice rejected all HF allografts with no hair regrowth. Perifollicular human CD3+ T cell and MHC class II+ cell infiltration was significantly diminished in the presence of UV and/or Ab treatment. HF allografts in the UV-only group showed stable maintenance of the immune privilege in the HF epithelium without evidence of antigen-specific T cell tolerance, which is likely promoted by normal HFs in vivo. This immunomodulatory strategy targeting the donor tissue exhibited novel biological relevance for clinical allogeneic transplantation without generalized immunosuppression.
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Affiliation(s)
- Jin Yong Kim
- Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Bo Mi Kang
- Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Ji Su Lee
- Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Hi-Jung Park
- Transplantation Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Pathology and Graduate Course of Translational Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Hae Joo Wi
- Transplantation Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Pathology and Graduate Course of Translational Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Ji-Seon Yoon
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Curie Ahn
- Transplantation Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Seoul National University College of Medicine; Transplantation Center, Seoul National University Hospital, Seoul, Korea
| | - Sue Shin
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea.,Department of Laboratory Medicine, Boramae Hospital, Seoul, Korea.,Seoul Metropolitan Government Public Cord Blood Bank, Seoul, Korea
| | - Kyu Han Kim
- Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Kyeong Cheon Jung
- Transplantation Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Pathology and Graduate Course of Translational Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Ohsang Kwon
- Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.,Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Korea.,Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
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18
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Characterization of donor and recipient CD8+ tissue-resident memory T cells in transplant nephrectomies. Sci Rep 2019; 9:5984. [PMID: 30979940 PMCID: PMC6461670 DOI: 10.1038/s41598-019-42401-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 03/29/2019] [Indexed: 12/12/2022] Open
Abstract
Tissue-resident memory T (TRM) cells are characterized by their surface expression of CD69 and can be subdivided in CD103+ and CD103− TRM cells. The origin and functional characteristics of TRM cells in the renal allograft are largely unknown. To determine these features we studied TRM cells in transplant nephrectomies. TRM cells with a CD103+ and CD103− phenotype were present in all samples (n = 13) and were mainly CD8+ T cells. Of note, donor-derived TRM cells were only detectable in renal allografts that failed in the first month after transplantation. Grafts, which failed later, mainly contained recipient derived TRM cells. The gene expression profiles of the recipient derived CD8+ TRM cells were studied in more detail and showed a previously described signature of tissue residence within both CD103+ and CD103− TRM cells. All CD8+ TRM cells had strong effector abilities through the production of IFNγ and TNFα, and harboured high levels of intracellular granzyme B and low levels of perforin. In conclusion, our results demonstrate that donor and recipient TRM cells reside in the rejected renal allograft. Over time, the donor-derived TRM cells are replaced by recipient TRM cells which have features that enables these cells to aggressively respond to the allograft.
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19
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Perez-Gutierrez A, Metes DM, Lu L, Hariharan S, Thomson AW, Ezzelarab MB. Characterization of eomesodermin and T-bet expression by allostimulated CD8 + T cells of healthy volunteers and kidney transplant patients in relation to graft outcome. Clin Exp Immunol 2018; 194:259-272. [PMID: 30246373 DOI: 10.1111/cei.13162] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Memory T cell (Tmem) responses play a critical role in the outcome of allo-transplantation. While the role of the T-box transcription factor Eomesodermin (Eomes) in the maintenance of antigen-specific Tmem is well studied, little is known about Eomes+ CD8+ T cell responses after transplantation. We evaluated the phenotype and function of allo-reactive Eomes+ CD8+ T cells in healthy volunteers and kidney transplant patients and their relation to transplant outcome. High Eomes expression by steady-state CD8+ T cells correlated with effector and memory phenotype. Following allo-stimulation, the expression of both the T-box proteins Eomes and T-bet by proliferating cells increased significantly, where high expression of Eomes and T-bet correlated with higher incidence of allo-stimulated IFNγ+ TNFα+ CD8+ T cells. In patients with no subsequent rejection, Eomes but not T-bet expression by donor-stimulated CD8+ T cells, increased significantly after transplantation. This was characterized by increased Eomeshi T-bet-/lo and decreased Eomes-/lo T-bethi CD8+ T cell subsets, with no significant changes in the Eomeshi T-bethi CD8+ T cell subset. No upregulation of exhaustion markers programmed-death-1 (PD-1) and cytotoxic-T-lymphocyte-associated-antigen-4 (CTLA4) by donor-stimulated Eomes+ CD8+ T cells was observed. Before transplantation, in patients without rejection, there were higher incidences of Eomeshi T-bet-/lo , and lower incidences of Eomeshi T-bethi and Eomes-/lo T-bethi donor-stimulated CD8+ T cell subsets, compared to those with subsequent rejection. Overall, our findings indicate that high Eomes expression by allo-stimulated T-bet+ CD8+ T cells is associated with enhanced effector function, and that an elevated incidence of donor-stimulated CD8+ T cells co-expressing high levels of Eomes and T-bet before transplantation, may correlate with an increased incidence of acute cellular rejection.
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Affiliation(s)
- A Perez-Gutierrez
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - D M Metes
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Departments of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - L Lu
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - S Hariharan
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - A W Thomson
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.,Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - M B Ezzelarab
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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20
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Liu L, He C, Liu J, Lv Z, Wang G, Gao H, Dai Y, Cooper DKC, Cai Z, Mou L. Transplant Tolerance: Current Insights and Strategies for Long-Term Survival of Xenografts. Arch Immunol Ther Exp (Warsz) 2018; 66:355-364. [PMID: 29992337 DOI: 10.1007/s00005-018-0517-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/18/2018] [Indexed: 12/20/2022]
Abstract
Xenotransplantation is an attractive solution to the problem of allograft shortage. However, transplants across discordant species barriers are subject to vigorous immunologic and pathobiologic hurdles, some of which might be overcome with the induction of immunologic tolerance. Several strategies have been designed to induce tolerance to a xenograft at both the central (including induction of mixed chimerism and thymic transplantation) and peripheral (including adoptive transfer of regulatory cells and blocking T cell costimulation) levels. Currently, xenograft tolerance has been well-established in rodent models, but these protocols have not yet achieved similar success in nonhuman primates. This review will discuss the major barriers that impede the establishment of immunological tolerance across xenogeneic barriers and the potential solution to these challenges, and provide a perspective on the future of the development of novel tolerance-inducing strategies.
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Affiliation(s)
- Lu Liu
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center' Institute of Translational Medicine, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen University School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518035, Guangdong, China.,Department of Gastroenterology' Center For Digestive Diseases, People's Hospital of Baoan District, The 8th people's Hospital of Shenzhen, Shenzhen, 518101, Guangdong, China
| | - Chen He
- Department of Ophthalmology, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, Guangdong, China
| | - Jintao Liu
- Department of Gastroenterology' Center For Digestive Diseases, People's Hospital of Baoan District, The 8th people's Hospital of Shenzhen, Shenzhen, 518101, Guangdong, China
| | - Zhiwu Lv
- Department of Gastroenterology' Center For Digestive Diseases, People's Hospital of Baoan District, The 8th people's Hospital of Shenzhen, Shenzhen, 518101, Guangdong, China
| | - Ganlu Wang
- Department of Gastroenterology' Center For Digestive Diseases, People's Hospital of Baoan District, The 8th people's Hospital of Shenzhen, Shenzhen, 518101, Guangdong, China
| | - Hanchao Gao
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center' Institute of Translational Medicine, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen University School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518035, Guangdong, China
| | - Yifan Dai
- Jiangsu Key Laboratory of Xenotransplantation, Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - David K C Cooper
- Xenotransplantation Program/Department of Surgery, The University of Alabama at Birmingham, Birmingham, AL, 35233, USA
| | - Zhiming Cai
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center' Institute of Translational Medicine, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen University School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518035, Guangdong, China
| | - Lisha Mou
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center' Institute of Translational Medicine, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen University School of Medicine, Shenzhen University Health Science Center, Shenzhen, 518035, Guangdong, China.
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21
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Tsuda H, Su CA, Tanaka T, Ayasoufi K, Min B, Valujskikh A, Fairchild RL. Allograft dendritic cell p40 homodimers activate donor-reactive memory CD8+ T cells. JCI Insight 2018; 3:96940. [PMID: 29467328 PMCID: PMC5916254 DOI: 10.1172/jci.insight.96940] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 12/28/2017] [Indexed: 12/13/2022] Open
Abstract
Recipient endogenous memory T cells with donor reactivity pose an important barrier to successful transplantation and costimulatory blockade-induced graft tolerance. Longer ischemic storage times prior to organ transplantation increase early posttransplant inflammation and negatively impact early graft function and long-term graft outcome. Little is known about the mechanisms enhancing endogenous memory T cell activation to mediate tissue injury within the increased inflammatory environment of allografts subjected to prolonged cold ischemic storage (CIS). Endogenous memory CD4+ and CD8+ T cell activation is markedly increased within complete MHC-mismatched cardiac allografts subjected to prolonged versus minimal CIS, and the memory CD8+ T cells directly mediate CTLA-4Ig-resistant allograft rejection. Memory CD8+ T cell activation within allografts subjected to prolonged CIS requires memory CD4+ T cell stimulation of graft DCs to produce p40 homodimers, but not IL-12 p40/p35 heterodimers. Targeting p40 abrogates memory CD8+ T cell proliferation within the allografts and their ability to mediate CTLA-4Ig-resistant allograft rejection. These findings indicate a critical role for memory CD4+ T cell-graft DC interactions to increase the intensity of endogenous memory CD8+ T cell activation needed to mediate rejection of higher-risk allografts subjected to increased CIS.
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Affiliation(s)
- Hidetoshi Tsuda
- Lerner Research Institute and
- Transplant Center, Cleveland Clinic, and
| | - Charles A. Su
- Lerner Research Institute and
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Toshiaki Tanaka
- Lerner Research Institute and
- Transplant Center, Cleveland Clinic, and
| | | | | | | | - Robert L. Fairchild
- Lerner Research Institute and
- Transplant Center, Cleveland Clinic, and
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
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22
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Abstract
Outcomes after lung transplant lag behind those of other solid-organ transplants. A better understanding of the pathways that contribute to rejection and tolerance after lung transplant will be required to develop new therapeutic strategies that take into account the unique immunological features of lungs. Mechanistic immunological investigations in an orthotopic transplant model in the mouse have shed new light on immune responses after lung transplant. Here, we highlight that interactions between immune cells within pulmonary grafts shape their fate. These observations set lungs apart from other organs and help provide the conceptual framework for the development of lung-specific immunosuppression.
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23
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Liu D, Badell IR, Ford ML. Selective CD28 blockade attenuates CTLA-4-dependent CD8+ memory T cell effector function and prolongs graft survival. JCI Insight 2018; 3:96378. [PMID: 29321374 DOI: 10.1172/jci.insight.96378] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 11/28/2017] [Indexed: 12/21/2022] Open
Abstract
Memory T cells pose a significant problem to successful therapeutic control of unwanted immune responses during autoimmunity and transplantation, as they are differentially controlled by cosignaling receptors such as CD28 and CTLA-4. Treatment with abatacept and belatacept impede CD28 signaling by binding to CD80 and CD86, but they also have the unintended consequence of blocking the ligands for CTLA-4, a process that may inadvertently boost effector responses. Here, we show that a potentially novel anti-CD28 domain antibody (dAb) that selectively blocks CD28 but preserves CTLA-4 coinhibition confers improved allograft survival in sensitized recipients as compared with CTLA-4 Ig. However, both CTLA-4 Ig and anti-CD28 dAb similarly and significantly reduced the accumulation of donor-reactive CD8+ memory T cells, demonstrating that regulation of the expansion of CD8+ memory T cell populations is controlled in part by CD28 signals and is not significantly impacted by CTLA-4. In contrast, selective CD28 blockade was superior to CTLA-4 Ig in inhibiting IFN-γ, TNF, and IL-2 production by CD8+ memory T cells, which in turn resulted in reduced recruitment of innate CD11b+ monocytes into allografts. Importantly, this superiority was CTLA-4 dependent, demonstrating that effector function of CD8+ memory T cells is regulated by the balance of CD28 and CTLA-4 signaling.
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Obregon C, Kumar R, Pascual MA, Vassalli G, Golshayan D. Update on Dendritic Cell-Induced Immunological and Clinical Tolerance. Front Immunol 2017; 8:1514. [PMID: 29250057 PMCID: PMC5715373 DOI: 10.3389/fimmu.2017.01514] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 10/26/2017] [Indexed: 12/18/2022] Open
Abstract
Dendritic cells (DCs) as highly efficient antigen-presenting cells are at the interface of innate and adaptive immunity. As such, they are key mediators of immunity and antigen-specific immune tolerance. Due to their functional specialization, research efforts have focused on the characterization of DCs subsets involved in the initiation of immunogenic responses and in the maintenance of tissue homeostasis. Tolerogenic DCs (tolDCs)-based therapies have been designed as promising strategies to prevent and control autoimmune diseases as well as allograft rejection after solid organ transplantation (SOT). Despite successful experimental studies and ongoing phase I/II clinical trials using autologous tolDCs in patients with type 1 diabetes, rheumatoid arthritis, multiple sclerosis, and in SOT recipients, additional basic research will be required to determine the optimal DC subset(s) and conditioning regimens for tolDCs-based treatments in vivo. In this review, we discuss the characteristics of human DCs and recent advances in their classification, as well as the role of DCs in immune regulation and their susceptibility to in vitro or in vivo manipulation for the development of tolerogenic therapies, with a focus on the potential of tolDCs for the treatment of autoimmune diseases and the prevention of allograft rejection after SOT.
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Affiliation(s)
- Carolina Obregon
- Department of Medicine, Transplantation Centre and Transplantation Immunopathology Laboratory, Service of Immunology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Rajesh Kumar
- Department of Medicine, Transplantation Centre and Transplantation Immunopathology Laboratory, Service of Immunology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Manuel Antonio Pascual
- Department of Medicine, Transplantation Centre and Transplantation Immunopathology Laboratory, Service of Immunology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.,Department of Surgery, Transplantation Centre, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Giuseppe Vassalli
- Département coeur-vaisseaux, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland.,Fondazione Cardiocentro Ticino, Swiss Institute of Regenerative Medicine (SIRM), Lugano, Switzerland
| | - Déla Golshayan
- Department of Medicine, Transplantation Centre and Transplantation Immunopathology Laboratory, Service of Immunology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.,Department of Surgery, Transplantation Centre, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
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25
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Dillinger B, Ahmadi-Erber S, Soukup K, Halfmann A, Schrom S, Vanhove B, Steinberger P, Geyeregger R, Ladisch S, Dohnal AM. CD28 Blockade Ex Vivo Induces Alloantigen-Specific Immune Tolerance but Preserves T-Cell Pathogen Reactivity. Front Immunol 2017; 8:1152. [PMID: 28979262 PMCID: PMC5611377 DOI: 10.3389/fimmu.2017.01152] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 08/31/2017] [Indexed: 12/21/2022] Open
Abstract
Donor T-cells contribute to reconstitution of protective immunity after allogeneic hematopoietic stem cell transplantation (HSCT) but must acquire specific tolerance against recipient alloantigens to avoid life-threatening graft-versus-host disease (GvHD). Systemic immunosuppressive drugs may abrogate severe GvHD, but this also impedes memory responses to invading pathogens. Here, we tested whether ex vivo blockade of CD28 co-stimulation can enable selective T-cell tolerization to alloantigens by facilitating CD80/86-cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) signaling. Treatment of human allogeneic dendritic cell/T-cell co-cultures with a human CD28 blocking antibody fragment (α-huCD28) significantly abrogated subsequent allospecific immune responses, seen by decreased T-cell proliferation and of type 1 cytokine (IFN-γ and IL-2) expression. Allo-tolerization persisted after discontinuation of CD28 blockade and secondary alloantigen stimulation, as confirmed by enhanced CTLA-4 and PD-1 immune checkpoint signaling. However, T-cells retained reactivity to pathogens, supported by clonotyping of neo-primed and cross-reactive T-cells specific for Candida albicans or third-party antigens using deep sequencing analysis. In an MHC-mismatched murine model, we tolerized C57BL/6 T-cells by ex vivo exposure to a murine single chain Fv specific for CD28 (α-muCD28). Infusion of these cells, after α-muCD28 washout, into bone marrow-transplanted BALB/c mice caused allo-tolerance and did not induce GvHD-associated hepatic pathology. We conclude that selective CD28 blockade ex vivo can allow the generation of stably allo-tolerized T-cells that in turn do not induce graft-versus-host reactions while maintaining pathogen reactivity. Hence, CD28 co-stimulation blockade of donor T-cells may be a useful therapeutic approach to support the immune system after HSCT.
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Affiliation(s)
- Barbara Dillinger
- Tumor Immunology, Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung e.V., Vienna, Austria
| | - Sarah Ahmadi-Erber
- Tumor Immunology, Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung e.V., Vienna, Austria
| | - Klara Soukup
- Tumor Immunology, Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung e.V., Vienna, Austria
| | - Angela Halfmann
- Tumor Immunology, Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung e.V., Vienna, Austria
| | - Silke Schrom
- Tumor Immunology, Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung e.V., Vienna, Austria
| | - Bernard Vanhove
- Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM, Université de Nantes, Nantes, France.,Institut de Transplantation Urologie Néphrologie (ITUN), CHU Nantes, Nantes, France.,OSE Immunotherapeutics, Nantes, France
| | - Peter Steinberger
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Rene Geyeregger
- Clinical Cell Biology, Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung e.V., Vienna, Austria.,Department of Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Stephan Ladisch
- Center for Cancer and Immunology Research, Children's Research Institute, Children's National Medical Center, Washington, DC, United States
| | - Alexander Michael Dohnal
- Tumor Immunology, Children's Cancer Research Institute (CCRI), St. Anna Kinderkrebsforschung e.V., Vienna, Austria
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Mahr B, Wekerle T. Murine models of transplantation tolerance through mixed chimerism: advances and roadblocks. Clin Exp Immunol 2017; 189:181-189. [PMID: 28395110 PMCID: PMC5508343 DOI: 10.1111/cei.12976] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2017] [Indexed: 02/06/2023] Open
Abstract
Organ transplantation is the treatment of choice for patients with end-stage organ failure, but chronic immunosuppression is taking its toll in terms of morbidity and poor efficacy in preventing late graft loss. Therefore, a drug-free state would be desirable where the recipient permanently accepts a donor organ while remaining otherwise fully immunologically competent. Mouse studies unveiled mixed chimerism as an effective approach to induce such donor-specific tolerance deliberately and laid the foundation for a series of clinical pilot trials. Nevertheless, its widespread clinical implementation is currently prevented by cytotoxic conditioning and limited efficacy. Therefore, the use of mouse studies remains an indispensable tool for the development of novel concepts with potential for translation and for the delineation of underlying tolerance mechanisms. Recent innovations developed in mice include the use of pro-apoptotic drugs or regulatory T cell (Treg ) transfer for promoting bone marrow engraftment in the absence of myelosuppression and new insight gained in the role of innate immunity and the interplay between deletion and regulation in maintaining tolerance in chimeras. Here, we review these and other recent advances in murine studies inducing transplantation tolerance through mixed chimerism and discuss both the advances and roadblocks of this approach.
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Affiliation(s)
- B. Mahr
- Section of Transplantation Immunology, Department of SurgeryMedical University of ViennaViennaAustria
| | - T. Wekerle
- Section of Transplantation Immunology, Department of SurgeryMedical University of ViennaViennaAustria
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Beura LK, Rosato PC, Masopust D. Implications of Resident Memory T Cells for Transplantation. Am J Transplant 2017; 17:1167-1175. [PMID: 27804207 PMCID: PMC5409891 DOI: 10.1111/ajt.14101] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 10/12/2016] [Accepted: 10/25/2016] [Indexed: 01/25/2023]
Abstract
Recent studies have established resident memory T cells (TRM ) as the dominant memory lymphocyte population surveying most nonlymphoid tissues. Unlike other memory T cell lineages, TRM do not recirculate through blood and are permanently confined to their tissue of residence. TRM orchestrate local immune responses and have been shown to accelerate local pathogen control in many experimental infection models. Here we briefly summarize recent advances in TRM differentiation, maintenance, and their protective function. While little is known, we have speculated on the potential implications of TRM for transplantation biology. Areas of emphasis include the role of passenger TRM in controlling latent viral recrudescence in donor organs, donor TRM as a source of graft-versus-host disease, the ability of TRM to potently induce inflammation through sensing and alarm functions, and differentiation of host T cells into TRM in response to local cues inside the allograft. Further investigation of TRM in the context of transplantation might identify therapeutic targets to prolong graft survival.
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Affiliation(s)
- Lalit K. Beura
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455
- Center for Immunology, University of Minnesota, Minneapolis, MN 55455
| | - Pamela C. Rosato
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455
- Center for Immunology, University of Minnesota, Minneapolis, MN 55455
| | - David Masopust
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455
- Center for Immunology, University of Minnesota, Minneapolis, MN 55455
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Kitchens WH, Dong Y, Mathews DV, Breeden CP, Strobert E, Fuentes ME, Larsen CP, Ford ML, Adams AB. Interruption of OX40L signaling prevents costimulation blockade-resistant allograft rejection. JCI Insight 2017; 2:e90317. [PMID: 28289708 DOI: 10.1172/jci.insight.90317] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The potential of costimulation blockade to serve as a novel transplant immunosuppression strategy has been explored for over 20 years, culminating in the recent clinical approval of belatacept for renal transplant patients. Despite improving long-term graft function and survival compared with calcineurin inhibitors, clinical acceptance of belatacept has been hindered by elevated rates of acute rejection. We examined the signaling pathways required to activate costimulation blockade-resistant alloreactive T cells and identified the OX40/OX40L secondary costimulatory pathway as a promising target. We next sought to improve the clinical efficacy of traditional costimulation blockade using belatacept by coupling it with anti-OX40L. Using a murine transplant model, we demonstrate that combined blockade enhances the suppression of alloreactive T cell proliferation and effector functions including both cytokine release and cytotoxic degranulation. We also show that anti-OX40L may be particularly useful in targeting alloreactive memory T cell responses that are relatively unaffected by traditional costimulation blockade regimens. Finally, we translated this therapy to a clinically relevant nonhuman primate renal transplant model, validating the efficacy of this regimen in a potentially novel steroid- and calcineurin inhibitor-free immunosuppression regimen.
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Affiliation(s)
- William H Kitchens
- Emory Transplant Center.,Yerkes National Primate Research Center, Atlanta, Georgia, USA
| | | | | | | | | | | | | | | | - Andrew B Adams
- Emory Transplant Center.,Yerkes National Primate Research Center, Atlanta, Georgia, USA
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29
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Benichou G, Gonzalez B, Marino J, Ayasoufi K, Valujskikh A. Role of Memory T Cells in Allograft Rejection and Tolerance. Front Immunol 2017; 8:170. [PMID: 28293238 PMCID: PMC5328996 DOI: 10.3389/fimmu.2017.00170] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 02/02/2017] [Indexed: 12/30/2022] Open
Abstract
Memory T cells are characterized by their low activation threshold, robust effector functions, and resistance to conventional immunosuppression and costimulation blockade. Unlike their naïve counterparts, memory T cells reside in and recirculate through peripheral non-lymphoid tissues. Alloreactive memory T cells are subdivided into different categories based on their origins, phenotypes, and functions. Recipients whose immune systems have been directly exposed to allogeneic major histocompatibility complex (MHC) molecules display high affinity alloreactive memory T cells. In the absence of any prior exposure to allogeneic MHC molecules, endogenous alloreactive memory T cells are regularly generated through microbial infections (heterologous immunity). Regardless of their origin, alloreactive memory T cells represent an essential element of the allograft rejection process and a major barrier to tolerance induction in clinical transplantation. This article describes the different subsets of alloreactive memory T cells involved in transplant rejection and examine their generation, functional properties, and mechanisms of action. In addition, we discuss strategies developed to target deleterious allospecific memory T cells in experimental animal models and clinical settings.
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Affiliation(s)
- Gilles Benichou
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Bruno Gonzalez
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Jose Marino
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Katayoun Ayasoufi
- Department of Immunology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Anna Valujskikh
- Department of Immunology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
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30
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Du G, Yang N, Gong W, Fang Y, He J, Zhou N, Lu X, Zhao Y. CD8 + effector memory T cells induce acute rejection of allogeneic heart retransplants in mice possibly through activating expression of inflammatory cytokines. Exp Cell Res 2017; 355:1-8. [PMID: 28232114 DOI: 10.1016/j.yexcr.2017.02.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 01/15/2017] [Accepted: 02/20/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND To investigate the effects of CD8+ memory T (Tm) cells and CD8+ effector memory T (Tem) cells on the results of allogeneic heart retransplantations performed in mice. METHODS A skin transplantation model was used to generate sensitized splenic CD8+ Tem cells for infusion into BALB/c mice. One week after infusion, the BALB/c mice underwent allogeneic heart transplantation in the abdominal cavity. Cyclosporin A was administered via intraperitoneal injection starting one day prior to transplantation to arrest immunological rejection of the transplanted heart. The effects of sensitized CD8+ Tem cells on allogeneic heart graft rejection were examined by monitoring survival of the transplanted hearts, the infiltration of effector memory CD8+ T cells into myocardium, and expressions of inflammatory cytokines in blood serum. RESULTS Adoptive transfer of sensitized CD8+ Tem cells prior to transplantation induced an acute rejection response which decreased the survival of transplanted hearts. The rejection response was accompanied by an infiltration of CD8+ Tem cells into the transplanted myocardial tissue. Additionally, infusion of sensitized CD8+ Tem cells induced markedly increased expressions of IL-2 and IFN-γ, and decreased expression of TGF-β in the transplanted hearts, as well as higher levels of IFN-γ and CXCL-9 in blood serum. CONCLUSIONS The infusion of sensitized CD8+ Tem cells induced an acute graft rejection response and decreased the survival of grafted hearts by regulating the expressions of inflammatory cytokines including CXCL-9, IL-2, and INF-γ. Cyclosporin A had no therapeutic effect on the graft rejection response induced by sensitized CD8+ Tem cells.
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Affiliation(s)
- Gang Du
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi 530021, China; Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Guangxi Medical University, Nanning 530021, China; The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China; The Department of Immunology, Guangxi Medical University, Nanning 530021, China
| | - Nuo Yang
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi 530021, China; Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Guangxi Medical University, Nanning 530021, China; The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China; The Department of Immunology, Guangxi Medical University, Nanning 530021, China
| | - Wenlin Gong
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi 530021, China; Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Guangxi Medical University, Nanning 530021, China
| | - Yuan Fang
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi 530021, China; Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Guangxi Medical University, Nanning 530021, China; The Department of Immunology, Guangxi Medical University, Nanning 530021, China
| | - Jian He
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi 530021, China; Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Guangxi Medical University, Nanning 530021, China; The Department of Immunology, Guangxi Medical University, Nanning 530021, China
| | - Nuo Zhou
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi 530021, China; Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Guangxi Medical University, Nanning 530021, China
| | - Xiaoling Lu
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi 530021, China; Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Guangxi Medical University, Nanning 530021, China; The Department of Immunology, Guangxi Medical University, Nanning 530021, China.
| | - Yongxiang Zhao
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi 530021, China; Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Guangxi Medical University, Nanning 530021, China; The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China; The Department of Immunology, Guangxi Medical University, Nanning 530021, China.
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31
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Yolcu ES, Shirwan H, Askenasy N. Mechanisms of Tolerance Induction by Hematopoietic Chimerism: The Immune Perspective. Stem Cells Transl Med 2017; 6:700-712. [PMID: 28186688 PMCID: PMC5442770 DOI: 10.1002/sctm.16-0358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 09/02/2016] [Accepted: 10/10/2016] [Indexed: 01/05/2023] Open
Abstract
Hematopoietic chimerism is one of the effective approaches to induce tolerance to donor‐derived tissue and organ grafts without administration of life‐long immunosuppressive therapy. Although experimental efforts to develop such regimens have been ongoing for decades, substantial cumulative toxicity of combined hematopoietic and tissue transplants precludes wide clinical implementation. Tolerance is an active immunological process that includes both peripheral and central mechanisms of mutual education of coresident donor and host immune systems. The major stages include sequential suppression of early alloreactivity, establishment of hematopoietic chimerism and suppressor cells that sustain the state of tolerance, with significant mechanistic and temporal overlap along the tolerization process. Efforts to devise less toxic transplant strategies by reduction of preparatory conditioning focus on modulation rather than deletion of residual host immunity and early reinstitution of regulatory subsets at the central and peripheral levels. Stem Cells Translational Medicine2017;6:700–712
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Affiliation(s)
- Esma S Yolcu
- Institute for Cellular Therapeutics and Department of Microbiology and Immunology, University of Louisville, Louisville, Kentucky, USA
| | - Haval Shirwan
- Institute for Cellular Therapeutics and Department of Microbiology and Immunology, University of Louisville, Louisville, Kentucky, USA
| | - Nadir Askenasy
- Frankel Laboratory of Experimental Bone Marrow Transplantation, Petach Tikva, Israel
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32
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The CD8 T-cell response during tolerance induction in liver transplantation. Clin Transl Immunology 2016; 5:e102. [PMID: 27867515 PMCID: PMC5099425 DOI: 10.1038/cti.2016.53] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 07/20/2016] [Accepted: 07/22/2016] [Indexed: 12/12/2022] Open
Abstract
Both experimental and clinical studies have shown that the liver possesses unique tolerogenic properties. Liver allografts can be spontaneously accepted across complete major histocompatibility mismatch in some animal models. In addition, some liver transplant patients can be successfully withdrawn from immunosuppressive medications, developing ‘operational tolerance'. Multiple mechanisms have been shown to be involved in inducing and maintaining alloimmune tolerance associated with liver transplantation. Here, we focus on CD8 T-cell tolerance in this setting. We first discuss how alloreactive cytotoxic T-cell responses are generated against allografts, before reviewing how the liver parenchyma, donor passenger leucocytes and the host immune system function together to attenuate alloreactive CD8 T-cell responses to promote the long-term survival of liver transplants.
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33
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Anti‐CD45RB and donor‐specific spleen cells transfusion inhibition allograft skin rejection mediated by memory T cells. Immunol Cell Biol 2016; 95:189-197. [PMID: 27616751 DOI: 10.1038/icb.2016.88] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 08/17/2016] [Accepted: 08/29/2016] [Indexed: 01/08/2023]
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Eomesodermin(lo) CTLA4(hi) Alloreactive CD8+ Memory T Cells Are Associated With Prolonged Renal Transplant Survival Induced by Regulatory Dendritic Cell Infusion in CTLA4 Immunoglobulin-Treated Nonhuman Primates. Transplantation 2016; 100:91-102. [PMID: 26680373 DOI: 10.1097/tp.0000000000000871] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Memory T cells (Tmem), particularly those resistant to costimulation blockade (CB), are a major barrier to transplant tolerance. The transcription factor Eomesodermin (Eomes) is critical for Tmem development and maintenance, but its expression by alloactivated T cells has not been examined in nonhuman primates. METHODS We evaluated Eomes and coinhibitory cytotoxic T lymphocyte antigen-4 (CTLA4) expression by alloactivated rhesus monkey T cells in the presence of CTLA4 immunoglobulin, both in vitro and in renal allograft recipients treated with CTLA4Ig, with or without regulatory dendritic cell (DCreg) infusion. RESULTS In normal monkeys, CD8+ T cells expressed significantly more Eomes than CD4+ T cells. By contrast, CD8+ T cells displayed minimal CTLA4. Among T cell subsets, central Tmem (Tcm) expressed the highest levels of Eomes. Notably, Eomes(lo)CTLA4(hi) cells displayed higher levels of CD25 and Foxp3 than Eomes(hi)CTLA4(lo) CD8+ T cells. After allostimulation, distinct proliferating Eomes(lo)CTLA4(hi) and Eomes(hi)CTLA4(lo) CD8+ T cell populations were identified, with a high proportion of Tcm being Eomes(lo)CTLA4(hi). CB with CTLA4Ig during allostimulation of CD8+ T cells reduced CTLA4 but not Eomes expression, significantly reducing Eomes(lo)CTLA4(hi) cells. After transplantation with CB and rapamycin, donor-reactive Eomes(lo)CTLA4(hi) CD8+ T cells were reduced. However, in monkeys also given DCreg, absolute numbers of these cells were elevated significantly. CONCLUSIONS Low Eomes and high CTLA4 expression by donor-reactive CD8+ Tmem is associated with prolonged renal allograft survival induced by DCreg infusion in CTLA4Ig-treated monkeys. Prolonged allograft survival associated with DCreg infusion may be related to maintenance of donor-reactive Eomes(lo)CTLA4(hi) Tcm.
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35
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Zeng YQ, Lu C, Dai Z. Editorial: Memory T Cells: Effectors, Regulators, and Implications for Transplant Tolerance. Front Immunol 2016; 7:7. [PMID: 26834748 PMCID: PMC4724718 DOI: 10.3389/fimmu.2016.00007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 01/11/2016] [Indexed: 12/30/2022] Open
Affiliation(s)
- Yu-Qun Zeng
- Section of Immunology, Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences , Guangzhou , China
| | - Chuanjian Lu
- Division of Dermatology, Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences , Guangzhou , China
| | - Zhenhua Dai
- Section of Immunology, Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences , Guangzhou , China
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36
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Liu J, Chen D, Nie GD, Dai Z. CD8(+)CD122(+) T-Cells: A Newly Emerging Regulator with Central Memory Cell Phenotypes. Front Immunol 2015; 6:494. [PMID: 26539191 PMCID: PMC4610204 DOI: 10.3389/fimmu.2015.00494] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/10/2015] [Indexed: 11/16/2022] Open
Abstract
CD8(+)CD122(+) T-cells have been traditionally described as antigen-specific memory T-cells that respond to previously encountered antigens more quickly and vigorously than their naïve counterparts. However, mounting evidence has demonstrated that murine CD8(+)CD122(+) T-cells exhibit a central memory phenotype (CD44(high)CD62L(high)), regulate T cell homeostasis, and act as regulatory T-cells (Treg) by suppressing both autoimmune and alloimmune responses. Importantly, naturally occurring murine CD8(+)CD122(+) Tregs are more potent in immunosuppression than their CD4(+)CD25(+) counterparts. They appear to be acting in an antigen-non-specific manner. Human CD8(+)CXCR3(+) T-cells are the equivalent of murine CD8(+)CD122(+) Tregs and also exhibit central memory phenotypes. In this mini-review article, we will summarize recent progresses in their phenotypes, homeostatic expansion, antigen-specificity, roles in the suppression of alloimmune and autoimmune responses, and the mechanisms underlying their inhibitory function.
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Affiliation(s)
- Junfeng Liu
- Section of Immunology, Division of Dermatology, Second Affiliated Hospital, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dacan Chen
- Section of Immunology, Division of Dermatology, Second Affiliated Hospital, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Golay D. Nie
- School of Medicine, University of Texas Medical Branch (UTMB), Galveston, TX, USA
| | - Zhenhua Dai
- Section of Immunology, Division of Dermatology, Second Affiliated Hospital, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
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Alloreactive CD154-expressing T-cell subsets with differential sensitivity to the immunosuppressant, belatacept: potential targets of novel belatacept-based regimens. Sci Rep 2015; 5:15218. [PMID: 26472085 PMCID: PMC4607954 DOI: 10.1038/srep15218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 09/18/2015] [Indexed: 11/08/2022] Open
Abstract
Belatacept blocks CD28-mediated T-cell costimulation and prevents renal transplant rejection. Understanding T-cell subset sensitivity to belatacept may identify cellular markers for immunosuppression failure to better guide treatment selection. Here, we evaluate the belatacept sensitivity of allo-antigen-specific CD154-expressing-T-cells, whose T-cytotoxic memory (TcM) subset predicts rejection with high sensitivity after non-renal transplantation. The belatacept concentration associated with half-maximal reduction (EC50) of CD154 expression was calculated for 36 T-cell subsets defined by combinations of T-helper (Th), Tc, T-memory and CD28 receptors, following allostimulation of peripheral blood leukocytes from 20 normal healthy subjects. Subsets were ranked by median EC50, and by whether subset EC50 was correlated with and therefore could be represented by the frequency of other subsets. No single subset frequency emerged as the significant correlate of EC50 for a given subset. Most (n = 25) T-cell subsets were sensitive to belatacept. Less sensitive subsets demonstrated a memory phenotype and absence of CD28 receptor. Potential drug-resistance markers for future validation include the low frequency highly differentiated, Th-memory-CD28-negative T-cells with the highest median EC50, and the least differentiated, high-frequency Tc subset, with the most CD28-negative T-cells, the third highest median EC50, and significant correlations with frequencies of the highest number of CD28-negative and memory subsets.
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Abstract
Immunological memory is a key feature of adaptive immunity. It provides the organism with long-lived and robust protection against infection. In organ transplantation, memory T cells pose a significant threat by causing allograft rejection that is generally resistant to immunosuppressive therapy. Therefore, a more thorough understanding of memory T cell biology is needed to improve the survival of transplanted organs without compromising the host’s ability to fight infections. This review will focus on the mechanisms by which memory T cells migrate to the site where their target antigen is present, with particular emphasis on their migration to transplanted organs. First, we will define the known subsets of memory T cells (central, effector, and tissue resident) and their circulation patterns. Second, we will review the cellular and molecular mechanisms by which memory T cells migrate to inflamed and non-inflamed tissues and highlight the emerging paradigm of antigen-driven, trans-endothelial migration. Third, we will discuss the relevance of this knowledge to organ transplantation and the prevention or treatment of allograft rejection.
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Affiliation(s)
- Qianqian Zhang
- Tsinghua University School of Medicine , Beijing , China ; University of Pittsburgh School of Medicine , Pittsburgh, PA , USA
| | - Fadi G Lakkis
- University of Pittsburgh School of Medicine , Pittsburgh, PA , USA
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Lin K, Chen S, Chen G. Role of Memory T Cells and Perspectives for Intervention in Organ Transplantation. Front Immunol 2015; 6:473. [PMID: 26441978 PMCID: PMC4568416 DOI: 10.3389/fimmu.2015.00473] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Accepted: 08/31/2015] [Indexed: 12/12/2022] Open
Abstract
Memory T cells are necessary for protective immunity against invading pathogens, especially under conditions of immunosuppression. However, their presence also threatens transplant survival, making transplantation a great challenge. Significant progress has been achieved in recent years in advancing our understanding of the role that memory T cells play in transplantation. This review focuses on the latest advances in our understanding of the involvement of memory T cells in graft rejection and transplant tolerance and discusses potential strategies for targeting memory T cells in order to minimize allograft rejection and optimize clinical outcomes.
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Affiliation(s)
- Kailin Lin
- Institute of Organ Transplantation, Tongji Hospital, Huazhong University of Science and Technology , Wuhan , China
| | - Song Chen
- Institute of Organ Transplantation, Tongji Hospital, Huazhong University of Science and Technology , Wuhan , China ; Key Laboratory of Organ Transplantation, Ministry of Education , Wuhan , China ; Key Laboratory of Organ Transplantation, Ministry of Public Health , Wuhan , China
| | - Gang Chen
- Institute of Organ Transplantation, Tongji Hospital, Huazhong University of Science and Technology , Wuhan , China ; Key Laboratory of Organ Transplantation, Ministry of Education , Wuhan , China ; Key Laboratory of Organ Transplantation, Ministry of Public Health , Wuhan , China
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Betjes MGH. Clinical consequences of circulating CD28-negative T cells for solid organ transplantation. Transpl Int 2015; 29:274-84. [DOI: 10.1111/tri.12658] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 07/06/2015] [Accepted: 08/11/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Michiel G. H. Betjes
- Department of Nephrology and Transplantation; Erasmus Medical Center; Rotterdam the Netherlands
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Abstract
Generation of an effective immune response against foreign antigens requires two distinct molecular signals: a primary signal provided by the binding of antigen-specific T-cell receptor to peptide-MHC on antigen-presenting cells and a secondary signal delivered via the engagement of costimulatory molecules. Among various costimulatory signaling pathways, the interactions between CD40 and its ligand CD154 have been extensively investigated given their essential roles in the modulation of adaptive immunity. Here, we review current understanding of the role CD40/CD154 costimulation pathway has in alloimmunity, and summarize recent mechanistic and preclinical advances in the evaluation of candidate therapeutic approaches to target this receptor-ligand pair in transplantation.
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Affiliation(s)
- Tianshu Zhang
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Richard N Pierson
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
- Baltimore VA Medical Center, Baltimore, MD, USA
| | - Agnes M Azimzadeh
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
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Arsenic trioxide inhibits accelerated allograft rejection mediated by alloreactive CD8(+) memory T cells and prolongs allograft survival time. Transpl Immunol 2015; 33:30-6. [PMID: 26044521 DOI: 10.1016/j.trim.2015.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/28/2015] [Accepted: 05/26/2015] [Indexed: 11/20/2022]
Abstract
CD8(+) memory T (Tm) cells are a significant barrier to transplant tolerance induction in alloantigen-primed recipients, and are insensitive to existing clinical immunosuppressants. Here, we studied the inhibition of CD8(+) Tm cells by arsenic trioxide (As2O3) for the first time. Alloantigen-primed CD8(+) Tm cells were transferred to T cell immunodeficient nude mice. The mice were subjected to heart allotransplantation, and treated with As2O3. The transplant survival time was determined, and the inhibitory effects of As2O3 on CD8(+) Tm cell-mediated immune rejection were assessed through serological studies and inspection of the transplanted heart and lymphoid organs. We found that As2O3 treatment prolonged the mean survival time of the graft and reduced the number of CD8(+) Tm cells in the spleen and lymph nodes. The expression of the genes encoding interleukin (IL)-2, and IFN-γ was reduced, while expression of IL-10 and transforming growth factor-β was increased in the transplant. Our findings show that As2O3 treatment inhibits allograft rejection mediated by alloreactive CD8(+) Tm cells in the mouse heart transplantation model.
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Mesenchymal stromal cells to control donor-specific memory T cells in solid organ transplantation. Curr Opin Organ Transplant 2015; 20:79-85. [PMID: 25563995 DOI: 10.1097/mot.0000000000000145] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Mesenchymal stromal cells (MSCs) represent a promising cell therapy to promote transplant tolerance, as they influence many cells involved in immune response. Herein, we review recent evidence on the ability of MSCs to inhibit antigen-induced memory T cell response in vitro and in preclinical studies as well as immunological studies in kidney transplant recipients highlighting the effects of MSC therapy on memory CD8 T-cell proliferation and function. RECENT FINDINGS MSCs are able to inhibit in-vitro proliferation and effector functions of memory T cells in response to auto-antigen and allo-antigen stimulation. MSC infusion in animal transplant models resulted in a skew of the balance between regulatory T cells and effector/memory T cells towards a pro-tolerogenic profile. MSC in clinical transplantation is in its infancy and limited numbers of clinical studies have performed immunomonitoring of MSC-treated patients. However, available data support the capability of MSCs to control effector/memory CD8 T-cell proliferation and donor-specific CD8 T-cell function long lasting in kidney transplant setting. SUMMARY Recent studies of MSCs in kidney transplantation highlight the anticipated add-on value of the immunomodulatory properties of bone marrow derived MSCs in persistently inhibiting donor-specific effector/memory CD8 T cells, an effect not shared by the current immunosuppressive drugs.
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't Hart BA, Bogers WM, Haanstra KG, Verreck FA, Kocken CH. The translational value of non-human primates in preclinical research on infection and immunopathology. Eur J Pharmacol 2015; 759:69-83. [PMID: 25814254 DOI: 10.1016/j.ejphar.2015.03.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 02/09/2015] [Accepted: 03/12/2015] [Indexed: 01/01/2023]
Abstract
The immune system plays a central role in the defense against environmental threats - such as infection with viruses, parasites or bacteria - but can also be a cause of disease, such as in the case of allergic or autoimmune disorders. In the past decades the impressive development of biotechnology has provided scientists with biological tools for the development of highly selective treatments for the different types of disorders. However, despite some clear successes the translation of scientific discoveries into effective treatments has remained challenging. The often-disappointing predictive validity of the preclinical animal models that are used in the selection of the most promising vaccine or drug candidates is the Achilles heel in the therapy development process. This publication summarizes the relevance and usage of non-human primates as pre-clinical model in infectious and autoimmune diseases, in particular for biologicals, which due to their high species-specificity are inactive in lower species.
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Affiliation(s)
- Bert A 't Hart
- Department Immunobiology, Biomedical Primate Research Centre, Rijswijk, The Netherlands; University of Groningen, University Medical Center, Department Neuroscience, Groningen, The Netherlands.
| | - Willy M Bogers
- Department Virology, Biomedical Primate Research Centre, Rijswijk, The Netherlands.
| | - Krista G Haanstra
- Department Immunobiology, Biomedical Primate Research Centre, Rijswijk, The Netherlands.
| | - Frank A Verreck
- Department Parasitology, Biomedical Primate Research Centre, Rijswijk, The Netherlands.
| | - Clemens H Kocken
- Department Parasitology, Biomedical Primate Research Centre, Rijswijk, The Netherlands.
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Lucas A, Lucas M, Strhyn A, Keane NM, McKinnon E, Pavlos R, Moran EM, Meyer-Pannwitt V, Gaudieri S, D’Orsogna L, Kalams S, Ostrov DA, Buus S, Peters B, Mallal S, Phillips E. Abacavir-reactive memory T cells are present in drug naïve individuals. PLoS One 2015; 10:e0117160. [PMID: 25674793 PMCID: PMC4326126 DOI: 10.1371/journal.pone.0117160] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 12/18/2014] [Indexed: 01/11/2023] Open
Abstract
Background Fifty-five percent of individuals with HLA-B*57:01 exposed to the antiretroviral drug abacavir develop a hypersensitivity reaction (HSR) that has been attributed to naïve T-cell responses to neo-antigen generated by the drug. Immunologically confirmed abacavir HSR can manifest clinically in less than 48 hours following first exposure suggesting that, at least in some cases, abacavir HSR is due to re-stimulation of a pre-existing memory T-cell population rather than priming of a high frequency naïve T-cell population. Methods To determine whether a pre-existing abacavir reactive memory T-cell population contributes to early abacavir HSR symptoms, we studied the abacavir specific naïve or memory T-cell response using HLA-B*57:01 positive HSR patients or healthy controls using ELISpot assay, intra-cellular cytokine staining and tetramer labelling. Results Abacavir reactive CD8+ T-cell responses were detected in vitro in one hundred percent of abacavir unexposed HLA-B*57:01 positive healthy donors. Abacavir-specific CD8+ T cells from such donors can be expanded from sorted memory, and sorted naïve, CD8+ T cells without need for autologous CD4+ T cells. Conclusions We propose that these pre-existing abacavir-reactive memory CD8+ T-cell responses must have been primed by earlier exposure to another foreign antigen and that these T cells cross-react with an abacavir-HLA-B*57:01-endogenous peptide ligand complex, in keeping with the model of heterologous immunity proposed in transplant rejection.
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Affiliation(s)
- Andrew Lucas
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
| | - Michaela Lucas
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
| | - Anette Strhyn
- Laboratory of Experimental Immunology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Niamh M. Keane
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
| | - Elizabeth McKinnon
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
| | - Rebecca Pavlos
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
| | - Ellen M. Moran
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
| | - Viola Meyer-Pannwitt
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
| | - Silvana Gaudieri
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
- School of Anatomy, Physiology & Human Biology, University of Western Australia, Nedlands, Australia
| | - Lloyd D’Orsogna
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
- Department of Clinical Immunology & Immunogenetics, Royal Perth Hospital & Pathwest, Perth, Australia
- School of Pathology & Laboratory Medicine, University of Western Australia, Nedlands, Australia
| | - Spyros Kalams
- Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - David A. Ostrov
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida College of Medicine, Gainesville, Florida, United States of America
| | - Søren Buus
- Laboratory of Experimental Immunology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bjoern Peters
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, California, United States of America
| | - Simon Mallal
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
- Department of Clinical Immunology & Immunogenetics, Royal Perth Hospital & Pathwest, Perth, Australia
- Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Elizabeth Phillips
- Institute for Immunology and Infectious Diseases, Murdoch University, Perth, Australia
- Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- * E-mail:
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Gorbacheva V, Fan R, Wang X, Baldwin WM, Fairchild RL, Valujskikh A. IFN-γ production by memory helper T cells is required for CD40-independent alloantibody responses. THE JOURNAL OF IMMUNOLOGY 2014; 194:1347-56. [PMID: 25548230 DOI: 10.4049/jimmunol.1401573] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cognate T-B cell interactions and CD40-CD154 costimulation are essential for productive humoral immunity against T-dependent Ags. We reported that memory CD4 T cells can deliver help to B cells and induce pathogenic IgG alloantibodies in the absence of CD40-CD154 interactions. To determine cytokine requirements for CD40-independent help, we used CD40(-/-) mice containing differentiated subsets of donor-reactive memory Th cells as heart allograft recipients. Th1 and Th17, but not Th2, memory CD4 T cells elicited high titers of anti-donor Ab. Abs induced by Th17 memory CD4 T cells had decreased reactivity against donor MHC class I molecules and inferior ability to cause complement deposition in heart allografts compared with Abs induced by Th1 cells, suggesting a requirement for IFN-γ during CD40-independent help. IFN-γ neutralization inhibited helper functions of memory CD4 T cells in both CD40(-/-) recipients and wild type recipients treated with anti-CD154 mAb. Our results suggest that IFN-γ secreted by pre-existing memory helper cells determines both isotype and specificity of donor-reactive alloantibodies and can thus affect allograft pathology. This information may be valuable for identifying transplant patients at risk for de novo development of pathogenic alloantibodies and for preventing alloantibody production in T cell-sensitized recipients.
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Affiliation(s)
- Victoria Gorbacheva
- Glickman Urological Institute, Cleveland Clinic, Cleveland, OH 44195; and Department of Immunology, Cleveland Clinic, Cleveland, OH 44195
| | - Ran Fan
- Glickman Urological Institute, Cleveland Clinic, Cleveland, OH 44195; and Department of Immunology, Cleveland Clinic, Cleveland, OH 44195
| | - Xi Wang
- Glickman Urological Institute, Cleveland Clinic, Cleveland, OH 44195; and Department of Immunology, Cleveland Clinic, Cleveland, OH 44195
| | - William M Baldwin
- Glickman Urological Institute, Cleveland Clinic, Cleveland, OH 44195; and Department of Immunology, Cleveland Clinic, Cleveland, OH 44195
| | - Robert L Fairchild
- Glickman Urological Institute, Cleveland Clinic, Cleveland, OH 44195; and Department of Immunology, Cleveland Clinic, Cleveland, OH 44195
| | - Anna Valujskikh
- Glickman Urological Institute, Cleveland Clinic, Cleveland, OH 44195; and Department of Immunology, Cleveland Clinic, Cleveland, OH 44195
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Westerhuis G, de Witte M, Schumacher TN, Toes RE, Fibbe WE. Barriers to chimerism after major histocompatibility complex-mismatched stem cell transplantation: A potential role for heterologous immunity. Exp Hematol 2014; 42:753-60. [DOI: 10.1016/j.exphem.2014.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 03/30/2014] [Accepted: 04/04/2014] [Indexed: 01/08/2023]
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van Doesum WB, Abdulahad WH, van Dijk MCRF, Dolff S, van Son WJ, Stegeman CA, Sanders JSF. Characterization of urinary CD4⁺ and CD8⁺ T cells in kidney transplantation patients with polyomavirus BK infection and allograft rejection. Transpl Infect Dis 2014; 16:733-43. [PMID: 25092256 DOI: 10.1111/tid.12273] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 04/19/2014] [Accepted: 05/05/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVES The objective of this study was to characterize CD4(+) and CD8(+) T-cell populations in blood and urine of renal transplant patients with BK virus (BKV) infection or allograft rejection. MATERIALS AND METHODS Percentages and absolute numbers of CD4(+) and CD8(+) effector memory T-cell subtype (TEM ) and terminal differentiated T cells (TTD ) in renal transplant patients with BKV infection (n = 14), with an episode of allograft rejection (n = 9), and in uncomplicated renal transplant patients with a stable kidney function (n = 12) were measured and compared using 4-color fluorescence-activated cell sorting. Results were correlated with the number of CD4(+) and CD8(+) T cells in renal biopsies. RESULTS In patients with allograft rejection, the number of urinary CD4(+) TEM and CD8(+) TEM cells was significantly increased compared to patients with BKV infection or patients without complications. Positive correlation was found between the number of CD4(+) and CD8(+) cells in the renal biopsies and the number of CD4(+) and CD8(+) cells in urine. In patients with rejection, after 2 months of immunosuppressive therapy, a reduction in urinary CD8(+) TEM cells was found. CONCLUSIONS CD4(+) TEM and CD8(+) TEM cells in urine could be a marker to distinguish allograft rejection from BKV-associated nephropathy and to monitor therapy effectiveness in renal transplant patients with allograft rejection.
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Affiliation(s)
- W B van Doesum
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Govender L, Pascual M, Golshayan D. Potential and limitations of regulatory T-cell therapy in solid organ transplantation. Expert Rev Clin Immunol 2014; 10:1197-212. [PMID: 25073810 DOI: 10.1586/1744666x.2014.943191] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Over the past few years, the therapeutic potential of Treg has been highlighted in the field of autoimmune diseases and after allogeneic transplantation. The first hurdle for the therapeutic use of Treg is their insufficient numbers in non-manipulated individuals, in particular when facing strong immune activation and expanding effector cells, such as in response to an allograft. Here we review current approaches being explored for Treg expansion in the perspective of clinical therapeutic protocols. We describe different Treg subsets that could be suitable for clinical application, as well as discuss factors such as the required dose of Treg, their antigen-specificity and in vivo stability, that have to be considered for optimal Treg-based immunotherapy in transplantation. Since Treg may not be sufficient as stand-alone therapy for solid organ transplantation in humans, we draw attention to possible hurdles and combination therapy with immunomodulatory drugs that could possibly improve the in vivo efficacy of Treg.
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Affiliation(s)
- Lerisa Govender
- Departments of Medicine and Surgery, Transplantation Centre and Transplantation Immunopathology Laboratory, Centre Hospitalier Universitaire Vaudois (CHUV), University of Lausanne, 1011 Lausanne, Switzerland
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Abstract
Following infections and environmental exposures, memory T cells are generated that provide long-term protective immunity. Compared to their naïve T cell counterparts, memory T cells possess unique characteristics that endow them with the ability to quickly and robustly respond to foreign antigens. While such memory T cells are beneficial in protecting their hosts from recurrent infection, memory cells reactive to donor antigens pose a major barrier to successful transplantation and tolerance induction. Significant progress has been made over the past several decades contributing to our understanding of memory T cell generation, their distinct biology, and their detrimental impact in clinical and animal models of transplantation. This review focuses on the unique features which make memory T cells relevant to the transplant community and discusses potential therapies targeting memory T cells which may ameliorate allograft rejection.
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Affiliation(s)
- Charles A Su
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106 ; Glickman Urological and Kidney Institute and Department of Immunology, Cleveland Clinic Foundation, Cleveland, OH 44195
| | - Robert L Fairchild
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106 ; Glickman Urological and Kidney Institute and Department of Immunology, Cleveland Clinic Foundation, Cleveland, OH 44195
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