1
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Süsal C, Alvarez CM, Benning L, Daniel V, Zeier M, Schaier M, Morath C, Speer C. The balance between memory and regulatory cell populations in kidney transplant recipients with operational tolerance. Clin Exp Immunol 2024; 216:318-330. [PMID: 38393856 PMCID: PMC11097908 DOI: 10.1093/cei/uxae018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 01/15/2024] [Accepted: 02/22/2024] [Indexed: 02/25/2024] Open
Abstract
Donor-reactive memory cells represent a barrier to long-term kidney graft survival. A better understanding of regulatory mechanisms that counterbalance alloreactive memory responses may help to identify patients with operational tolerance. This prospective study investigated the equilibrium between memory T-cell subsets and regulatory T or B cells (Tregs, Bregs) in peripheral blood of kidney transplant recipients with operational tolerance (N = 8), chronic rejection (N = 8), and different immunosuppressive treatment regimens (N = 81). Patients on hemodialysis and healthy individuals served as controls (N = 50). In addition, the expression of Treg- and Breg-associated molecule genes was analyzed. Patients with chronic rejection showed a disrupted memory T-cell composition with a significantly higher frequency of circulating CD8+ terminally differentiated effector memory (TEMRA) T cells than patients with operational tolerance, patients on hemodialysis, or healthy controls (P < 0.001). Low frequency of CD8+ TEMRA and high frequency of Tregs and transitional Bregs were found in operationally tolerant patients. Consequently, operationally tolerant patients showed, as compared to all other transplant recipients with different immunosuppressive regiments, the lowest ratios between CD8+ TEMRA T cells and Tregs or Bregs (for both P < 0.001). Moreover, a specific peripheral blood transcription pattern was found in operationally tolerant patients with an increased expression of Breg- and Treg-associated genes CD22 and FoxP3 and a decreased FcγRIIA/FcγRIIB transcript ratio (for all P < 0.001). In conclusion, monitoring the balance between circulating CD8+ TEMRA T cells and regulatory cell subsets and their transcripts may help to distinguish transplant recipients with operational tolerance from recipients at risk of graft loss.
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Affiliation(s)
- Caner Süsal
- Institute of Immunology, University of Heidelberg, Heidelberg, Germany
- Transplant Immunology Research Center of Excellence, Koç University Hospital, Istanbul, Turkey
| | - Cristiam M Alvarez
- Grupo de Inmunología Celular e Inmunogenética, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
| | - Louise Benning
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Volker Daniel
- Institute of Immunology, University of Heidelberg, Heidelberg, Germany
| | - Martin Zeier
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Matthias Schaier
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Christian Morath
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
| | - Claudius Speer
- Department of Nephrology, University of Heidelberg, Heidelberg, Germany
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2
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Hullegie-Peelen DM, Tejeda-Mora H, Dieterich M, Heidt S, Bindels EMJ, Hoogduijn MJ, Hesselink DA, Baan CC. Tissue-resident memory T cells in human kidney transplants have alloreactive potential. Am J Transplant 2024:S1600-6135(24)00172-2. [PMID: 38447886 DOI: 10.1016/j.ajt.2024.02.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 03/08/2024]
Abstract
The extent to which tissue-resident memory T (TRM) cells in transplanted organs possess alloreactivity is uncertain. This study investigates the alloreactive potential of TRM cells in kidney explants from 4 patients who experienced severe acute rejection leading to graft loss. Alloreactive T cell receptor (TCR) clones were identified in pretransplant blood samples through mixed lymphocyte reactions, followed by single-cell RNA and TCR sequencing of the proliferated recipient T cells. Subsequently, these TCR clones were traced in the TRM cells of kidney explants, which were also subjected to single-cell RNA and TCR sequencing. The proportion of recipient-derived TRM cells expressing an alloreactive TCR in the 4 kidney explants varied from 0% to 9%. Notably, these alloreactive TCRs were predominantly found among CD4+ and CD8+ TRM cells with an effector phenotype. Intriguingly, these clones were present not only in recipient-derived TRM cells but also in donor-derived TRM cells, constituting up to 4% of the donor population, suggesting the presence of self-reactive TRM cells. Overall, our study demonstrates that T cells with alloreactive potential present in the peripheral blood prior to transplantation can infiltrate the kidney transplant and adopt a TRM phenotype.
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Affiliation(s)
- Daphne M Hullegie-Peelen
- Erasmus Medical Center Transplant Institute, Department of Internal Medicine, Nephrology and Transplantation, University Medical Center Rotterdam, Rotterdam, the Netherlands.
| | - Hector Tejeda-Mora
- Erasmus Medical Center Transplant Institute, Department of Internal Medicine, Nephrology and Transplantation, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Marjolein Dieterich
- Erasmus Medical Center Transplant Institute, Department of Internal Medicine, Nephrology and Transplantation, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Sebastiaan Heidt
- Department of Immunology, Leiden University Medical Center, Leiden, the Netherlands
| | - Eric M J Bindels
- Department of Haematology, University Medical Center, Rotterdam, the Netherlands
| | - Martin J Hoogduijn
- Erasmus Medical Center Transplant Institute, Department of Internal Medicine, Nephrology and Transplantation, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Dennis A Hesselink
- Erasmus Medical Center Transplant Institute, Department of Internal Medicine, Nephrology and Transplantation, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Carla C Baan
- Erasmus Medical Center Transplant Institute, Department of Internal Medicine, Nephrology and Transplantation, University Medical Center Rotterdam, Rotterdam, the Netherlands
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3
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Tereshchenko V, Shevyrev D, Fisher M, Bulygin A, Khantakova J, Sennikov S. TCR Sequencing in Mouse Models of Allorecognition Unveils the Features of Directly and Indirectly Activated Clonotypes. Int J Mol Sci 2023; 24:12075. [PMID: 37569450 PMCID: PMC10418307 DOI: 10.3390/ijms241512075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Allorecognition is known to involve a large number of lymphocytes carrying diverse T-cell receptor repertoire. Thus, one way to understand allorecognition and rejection mechanisms is via high-throughput sequencing of T-cell receptors. In this study, in order to explore and systematize the properties of the alloreactive T-cell receptor repertoire, we modeled direct and indirect allorecognition pathways using material from inbred mice in vitro and in vivo. Decoding of the obtained T-cell receptor genes using high-throughput sequencing revealed some features of the alloreactive repertoires. Thus, alloreactive T-cell receptor repertoires were characterized by specific V-gene usage patterns, changes in CDR3 loop length, and some amino acid occurrence probabilities in the CDR3 loop. Particularly pronounced changes were observed for directly alloreactive clonotypes. We also revealed a clustering of directly and indirectly alloreactive clonotypes by their ability to bind a single antigen; amino acid patterns of the CDR3 loop of alloreactive clonotypes; and the presence in alloreactive repertoires of clonotypes also associated with infectious, autoimmune, and tumor diseases. The obtained results were determined by the modeling of the simplified allorecognition reaction in inbred mice in which stimulation was performed with a single MHCII molecule. We suppose that the decomposition of the diverse alloreactive TCR repertoire observed in humans with transplants into such simple reactions will help to find alloreactive repertoire features; e.g., a dominant clonotype or V-gene usage pattern, which may be targeted to correct the entire rejection reaction in patients. In this work, we propose several technical ways for such decomposition analysis, including separate modeling of the indirect alloreaction pathway and clustering of alloreactive clonotypes according to their ability to bind a single antigen, among others.
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Affiliation(s)
- Valeriy Tereshchenko
- Laboratory of Molecular Immunology, Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
- Resource Center for Cellular Technologies and Immunology, Sirius University of Science and Technology, 354340 Sochi, Russia
| | - Daniil Shevyrev
- Resource Center for Cellular Technologies and Immunology, Sirius University of Science and Technology, 354340 Sochi, Russia
| | - Marina Fisher
- Laboratory of Molecular Immunology, Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Aleksei Bulygin
- Laboratory of Molecular Immunology, Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Julia Khantakova
- Laboratory of Molecular Immunology, Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
| | - Sergey Sennikov
- Laboratory of Molecular Immunology, Research Institute of Fundamental and Clinical Immunology, 630099 Novosibirsk, Russia
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Chen Y, Zhu Y, Kramer A, Fang Y, Wilson M, Li YR, Yang L. Genetic engineering strategies to enhance antitumor reactivity and reduce alloreactivity for allogeneic cell-based cancer therapy. Front Med (Lausanne) 2023; 10:1135468. [PMID: 37064017 PMCID: PMC10090359 DOI: 10.3389/fmed.2023.1135468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 03/09/2023] [Indexed: 03/31/2023] Open
Abstract
The realm of cell-based immunotherapy holds untapped potential for the development of next-generation cancer treatment through genetic engineering of chimeric antigen receptor (CAR)-engineered T (CAR-T) cell therapies for targeted eradication of cancerous malignancies. Such allogeneic "off-the-shelf" cell products can be advantageously manufactured in large quantities, stored for extended periods, and easily distributed to treat an exponential number of cancer patients. At current, patient risk of graft-versus-host disease (GvHD) and host-versus-graft (HvG) allorejection severely restrict the development of allogeneic CAR-T cell products. To address these limitations, a variety of genetic engineering strategies have been implemented to enhance antitumor efficacy, reduce GvHD and HvG onset, and improve the overall safety profile of T-cell based immunotherapies. In this review, we summarize these genetic engineering strategies and discuss the challenges and prospects these approaches provide to expedite progression of translational and clinical studies for adoption of a universal cell-based cancer immunotherapy.
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Affiliation(s)
- Yuning Chen
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, United States
| | - Yichen Zhu
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, United States
| | - Adam Kramer
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, United States
| | - Ying Fang
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, United States
| | - Matthew Wilson
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, United States
| | - Yan-Ruide Li
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, United States
| | - Lili Yang
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, United States
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA, United States
- Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, United States
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5
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Dhuyser A, Remen T, Pérès M, Chamberlain-Evans V, Nemat-Gorgani N, Campidelli A, Clément S, Rubio MT, Trowsdale J, Aarnink A, Traherne J. Comparison of NK alloreactivity prediction models based on KIR-MHC interactions in haematopoeitic stem cell transplantation. Front Immunol 2023; 14:1028162. [PMID: 36936953 PMCID: PMC10017772 DOI: 10.3389/fimmu.2023.1028162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 01/17/2023] [Indexed: 03/06/2023] Open
Abstract
The biological processes underlying NK cell alloreactivity in haematopoietic stem cell transplantation (HSCT) remain unclear. Many different models to predict NK alloreactivity through KIR and MHC genotyping exist, raising ambiguities in its utility and application for clinicians. We assessed 27 predictive models, broadly divided into six categories of alloreactivity prediction: ligand-ligand, receptor-ligand, educational, KIR haplotype-based, KIR matching and KIR allelic polymorphism. The models were applied to 78 NGS-typed donor/recipient pairs undergoing allogeneic HSCT in genoidentical (n=43) or haploidentical (n=35) matchings. Correlations between different predictive models differed widely, suggesting that the choice of the model in predicting NK alloreactivity matters. For example, two broadly used models, educational and receptor-ligand, led to opposing predictions especially in the genoidentical cohort. Correlations also depended on the matching fashion, suggesting that this parameter should also be taken into account in the choice of the scoring strategy. The number of centromeric B-motifs was the only model strongly correlated with the incidence of acute graft-versus-host disease in our set of patients in both the genoidentical and the haploidentical cohorts, suggesting that KIR-based alloreactivity, not MHC mismatches, are responsible for it. To our best knowledge, this paper is the first to experimentally compare NK alloreactivity prediction models within a cohort of genoidentical and haploidentical donor-recipient pairs. This study helps to resolve current discrepancies in KIR-based alloreactivity predictions and highlights the need for deeper consideration of the models used in clinical studies as well as in medical practice.
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Affiliation(s)
- Adèle Dhuyser
- Histocompatibility Laboratory, Centre Hospitalier Régional Universitaire de Nancy, Nancy, France
- Ingénieurie Moléculaire et Physiopathologie Articulaire, team 6 (IMoPA6), Unité Mixte de Recherche 7365 Centre national de la Recherche Scientifique, Université de Lorraine, Nancy, France
- *Correspondence: James Traherne, ; Adèle Dhuyser,
| | - Thomas Remen
- Direction de la Recherche Clinique et de l’Innovation, Unité de Méthodologie, Datamanagement et Statistiques, Centre Hospitalier Régional Universitaire de Nancy, Nancy, France
| | - Michaël Pérès
- Histocompatibility Laboratory, Centre Hospitalier Régional Universitaire de Nancy, Nancy, France
| | | | - Neda Nemat-Gorgani
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Arnaud Campidelli
- Department of Hematology, Centre Hospitalier Régional Universitaire de Nancy, Nancy, France
| | - Sandra Clément
- Histocompatibility Laboratory, Centre Hospitalier Régional Universitaire de Nancy, Nancy, France
| | - Marie Thérèse Rubio
- Ingénieurie Moléculaire et Physiopathologie Articulaire, team 6 (IMoPA6), Unité Mixte de Recherche 7365 Centre national de la Recherche Scientifique, Université de Lorraine, Nancy, France
- Department of Hematology, Centre Hospitalier Régional Universitaire de Nancy, Nancy, France
| | - John Trowsdale
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Alice Aarnink
- Histocompatibility Laboratory, Centre Hospitalier Régional Universitaire de Nancy, Nancy, France
- Ingénieurie Moléculaire et Physiopathologie Articulaire, team 6 (IMoPA6), Unité Mixte de Recherche 7365 Centre national de la Recherche Scientifique, Université de Lorraine, Nancy, France
| | - James Traherne
- Department of Pathology, University of Cambridge, Cambridge, United Kingdom
- *Correspondence: James Traherne, ; Adèle Dhuyser,
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6
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Møller DL, Kielsen K, Nielsen CH, Sengeløv H, Pedersen AE, Ryder LP, Müller K. Thymic stromal lymphopoietin levels after allogeneic hematopoietic stem cell transplantation. Immunopharmacol Immunotoxicol 2022; 44:1004-1012. [PMID: 35899395 DOI: 10.1080/08923973.2022.2102989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Thymic stromal lymphopoietin (TSLP) is an immunoregulatory, Th2-polarizing cytokine produced by epithelial cells. We hypothesized that TSLP affects immune reconstitution after hematopoietic stem cell transplantation (HSCT) leading to increased alloreactivity. METHODS We measured plasma TSLP by ELISA in 38 patients and assessed the immune reconstitution by flow cytometry. RESULTS TSLP levels rose after initiation of the conditioning to peak at day +21 after HSCT (p = .03), where TSLP levels correlated with counts of neutrophils (rho = 0.36, p = .04), monocytes (rho = 0.58, p = .006), and lymphocytes (rho = 0.59, p = .02). Overall absolute TSLP levels were not associated with acute or chronic graft-vs-host disease (a/cGvHD). However, patients mounting a sustained increase in TSLP levels at day +90 had a higher risk of cGvHD compared to patients who had returned to pre-conditioning levels at that stage (cumulative incidence: 77% vs. 38%, p = .01). CONCLUSION In conclusion, this study suggests a role of TSLP in immune reconstitution and alloreactivity post-HSCT. lymphopoietin (TSLP) is an immunoregulatory, Th2-polarizing cytokine produced by epithelial cells. We hypothesized that TSLP affects immune reconstitution after hematopoietic stem cell transplantation (HSCT) leading to increased alloreactivity. We measured plasma TSLP by ELISA in 38 patients and assessed the immune reconstitution by flow cytometry.
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Affiliation(s)
- Dina Leth Møller
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.,Institute for Inflammation Research, Department of Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Katrine Kielsen
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.,Institute for Inflammation Research, Department of Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Claus Henrik Nielsen
- Institute for Inflammation Research, Department of Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Henrik Sengeløv
- Department of Hematology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | | | - Lars Peter Ryder
- The Tissue Typing Laboratory, Department of Clinical Immunology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Klaus Müller
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.,Institute for Inflammation Research, Department of Rheumatology and Spine Diseases, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.,Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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7
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Handgretinger R, Arendt AM, Maier CP, Lang P. Ex vivo and in vivo T-cell depletion in allogeneic transplantation: towards less or non-cytotoxic conditioning regimens. Expert Rev Clin Immunol 2022; 18:1285-1296. [PMID: 36220154 DOI: 10.1080/1744666x.2022.2134857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Although tremendous progress has been made since the introduction of allogeneic hematopoietic stem cell transplantation (HSCT) decades ago, there are still many obstacles to overcome. A major obstacle is the presence of T-lymphocytes in the recipient and in the donor. Recipient-derived T-lymphocytes not eliminated by the conditioning regimen are a major barrier and can lead to mixed chimerism or to complete rejection of the graft. Donor-derived T-lymphocytes can induce severe acute and chronic Graft-versus-Host Disease (GvHD). AREAS COVERED Currently published strategies for in vivo depletion of recipient-derived T-lymphocytes are discussed including the increase of the intensity of the conditioning regimen, the addition of anti-thymocyte globulin (ATG) or the anti-CD52 monoclonal antibody Campath. For the depletion or tolerization of the donor-derived T-lymphocytes, ex vivo-T-cell depletion methods, such as positive selection of CD34+ stem cells, negative depletion of CD3+ or TcRαβ+ T-lymphocytes or the use of post-transplant cyclophosphamide (PTCy) have been developed. EXPERT COMMENTARY All these currently used approaches have their disadvantages and new approaches should be investigated. In this review, we discuss current and propose new possible strategies to overcome the HLA barrier by using more specific T-cell directed therapies and/or by the combinations of current methods.
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Affiliation(s)
- Rupert Handgretinger
- Department of Hematology/Oncology. Children's University Hospital, University of Tuebingen, Germany.,Abu Dhabi Stem Cells Center, Abu Dhabi, UAE
| | - Anne-Marie Arendt
- Department of Hematology/Oncology. Children's University Hospital, University of Tuebingen, Germany
| | - Claus-Philipp Maier
- Department of Hematology/Oncology. Children's University Hospital, University of Tuebingen, Germany.,Department of Hematology, Oncology, Clinical Immunology and Rheumatology, Center for Internal Medicine, University Hospital Tuebingen, Tuebingen, Germany
| | - Peter Lang
- Department of Hematology/Oncology. Children's University Hospital, University of Tuebingen, Germany
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8
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Ramos CA, Quach DH, Rooney CM. EXABS-107-NHL CAR T-Cell Therapy in Hodgkin Lymphoma. Clin Lymphoma Myeloma Leuk 2022; 22 Suppl 2:S9. [PMID: 36164247 DOI: 10.1016/s2152-2650(22)00642-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Carlos A Ramos
- Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - David H Quach
- Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Cliona M Rooney
- Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
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9
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Abstract
Glioma is the most common malignant primary brain tumor diagnosed in adults. Current therapies are unable to improve its clinical prognosis, imposing the need for innovative therapeutic approaches. The main reason for the poor prognosis is the great cell heterogeneity of the tumor and its immunosuppressive microenvironment. Development of new therapies that avoid this immune evasion could improve the response to the current treatments. Natural killer (NK) cells are an intriguing candidate for the next wave of therapies because of several unique features that they possess. For example, NK cell-based immunotherapy causes minimal graft-versus-host disease. Cytokine release syndrome is less likely to occur during chimeric antigen receptor (CAR)-NK therapy, and CAR-NK cells can kill targets in a CAR-independent manner. However, NK cell-based therapy in treating glioma faces several difficulties. For example, CAR molecules are not sufficiently well designed so that they will thoroughly release functioning NK cells. Compared to hematological malignancies, the application of many potential NK cell-based therapies in glioma lags far behind. Here, we review several issues of NK cells and propose several strategies that will improve the efficacy of NK cell-based cancer immunotherapy in the treatment of glioma.
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Affiliation(s)
- Changqing Pan
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - You Zhai
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Guanzhang Li
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - Tao Jiang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Chinese Glioma Genome Atlas (CGGA) and Asian Glioma Genome Atlas (AGGA), Beijing, China
| | - Wei Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Beijing Neurosurgical Institute, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Chinese Glioma Genome Atlas (CGGA) and Asian Glioma Genome Atlas (AGGA), Beijing, China
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10
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Aschauer C, Jelencsics K, Hu K, Heinzel A, Gregorich MG, Vetter J, Schaller S, Winkler SM, Weinberger J, Pimenov L, Gualdoni GA, Eder M, Kainz A, Troescher AR, Regele H, Reindl-Schwaighofer R, Wekerle T, Huppa JB, Sykes M, Oberbauer R. Prospective Tracking of Donor-Reactive T-Cell Clones in the Circulation and Rejecting Human Kidney Allografts. Front Immunol 2021; 12:750005. [PMID: 34721420 PMCID: PMC8552542 DOI: 10.3389/fimmu.2021.750005] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/20/2021] [Indexed: 11/13/2022] Open
Abstract
Background Antigen recognition of allo-peptides and HLA molecules leads to the activation of donor-reactive T-cells following transplantation, potentially causing T-cell-mediated rejection (TCMR). Sequencing of the T-cell receptor (TCR) repertoire can be used to track the donor-reactive repertoire in blood and tissue of patients after kidney transplantation. Methods/Design In this prospective cohort study, 117 non-sensitized kidney transplant recipients with anti-CD25 induction were included. Peripheral mononuclear cells (PBMCs) were sampled pre-transplant and at the time of protocol or indication biopsies together with graft tissue. Next-generation sequencing (NGS) of the CDR3 region of the TCRbeta chain was performed after donor stimulation in mixed lymphocyte reactions to define the donor-reactive TCR repertoire. Blood and tissue of six patients experiencing a TCMR and six patients without rejection on protocol biopsies were interrogated for these TCRs. To elucidate common features of T-cell clonotypes, a network analysis of the TCR repertoires was performed. Results After transplantation, the frequency of circulating donor-reactive CD4 T-cells increased significantly from 0.86 ± 0.40% to 2.06 ± 0.40% of all CD4 cells (p < 0.001, mean dif.: -1.197, CI: -1.802, -0.593). The number of circulating donor-reactive CD4 clonotypes increased from 0.72 ± 0.33% to 1.89 ± 0.33% (p < 0.001, mean dif.: -1.168, CI: -1.724, -0.612). No difference in the percentage of donor-reactive T-cells in the circulation at transplant biopsy was found between subjects experiencing a TCMR and the control group [p = 0.64 (CD4+), p = 0.52 (CD8+)]. Graft-infiltrating T-cells showed an up to six-fold increase of donor-reactive T-cell clonotypes compared to the blood at the same time (3.7 vs. 0.6% and 2.4 vs. 1.5%), but the infiltrating TCR repertoire was not reflected by the composition of the circulating TCR repertoire despite some overlap. Network analysis showed a distinct segregation of the donor-reactive repertoire with higher modularity than the overall TCR repertoire in the blood. These findings indicate an unchoreographed process of diverse T-cell clones directed against numerous non-self antigens found in the allograft. Conclusion Donor-reactive T-cells are enriched in the kidney allograft during a TCMR episode, and dominant tissue clones are also found in the blood. Trial Registration Clinicaltrials.gov: NCT: 03422224 (https://clinicaltrials.gov/ct2/show/NCT03422224).
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Affiliation(s)
- Constantin Aschauer
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Kira Jelencsics
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Karin Hu
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Andreas Heinzel
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Mariella Gloria Gregorich
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria.,Section for Clinical Biometrics, Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Julia Vetter
- Bioinformatics Research Group, University of Applied Sciences Upper Austria, Hagenberg im Muehlkreis, Austria
| | - Susanne Schaller
- Bioinformatics Research Group, University of Applied Sciences Upper Austria, Hagenberg im Muehlkreis, Austria
| | - Stephan M Winkler
- Bioinformatics Research Group, University of Applied Sciences Upper Austria, Hagenberg im Muehlkreis, Austria
| | - Johannes Weinberger
- Research Laboratory of Infection Biology, Department of Medicine, Medical University of Vienna, Vienna, Austria
| | - Lisabeth Pimenov
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Guido A Gualdoni
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Michael Eder
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Alexander Kainz
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | | | - Heinz Regele
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Roman Reindl-Schwaighofer
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Thomas Wekerle
- Department of General Surgery, Division of Transplantation, Section of Transplantation Immunology, Medical University of Vienna, Vienna, Austria
| | - Johannes Bernhard Huppa
- Center for Pathophysiology, Infectiology and Immunology, Institute for Hygiene and Applied Immunology, Medical University of Vienna, Vienna, Austria
| | - Megan Sykes
- Columbian Center for Translational Immunology, Department of Medicine, Columbia University, New York City, NY, United States
| | - Rainer Oberbauer
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University of Vienna, Vienna, Austria
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11
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Liu H, Yu Z, Tang B, Miao S, Qin C, Li Y, Liang Z, Shi Y, Zhang Y, Wang Q, Yan M, Song Z, Ren H, Dong Y. Corrigendum: LYG1 Deficiency Attenuates the Severity of Acute Graft-Versus-Host Disease via Skewing Allogeneic T Cells Polarization Towards Treg Cells. Front Immunol 2021; 12:762728. [PMID: 34603343 PMCID: PMC8482039 DOI: 10.3389/fimmu.2021.762728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 09/02/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Huihui Liu
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Zhengyu Yu
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Bo Tang
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Shengchao Miao
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Chenchen Qin
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Yuan Li
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Zeyin Liang
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Yongjin Shi
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Yang Zhang
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Qingya Wang
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Miao Yan
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Zhengyang Song
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Hanyun Ren
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Yujun Dong
- Department of Hematology, Peking University First Hospital, Beijing, China
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12
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Liu H, Yu Z, Tang B, Miao S, Qin C, Li Y, Liang Z, Shi Y, Zhang Y, Wang Q, Yan M, Song Z, Ren H, Dong Y. LYG1 Deficiency Attenuates the Severity of Acute Graft-Versus-Host Disease via Skewing Allogeneic T Cells Polarization Towards Treg Cells. Front Immunol 2021; 12:647894. [PMID: 34262560 PMCID: PMC8273552 DOI: 10.3389/fimmu.2021.647894] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 06/11/2021] [Indexed: 11/13/2022] Open
Abstract
Acute graft-versus-host disease (aGVHD) is a lethal complication after allogeneic hematopoietic stem cell transplantation. The mechanism involves the recognition of host antigens by donor-derived T cells which induces augmented response of alloreactive T cells. In this study, we characterized the role of a previously identified novel classical secretory protein with antitumor function-LYG1 (Lysozyme G-like 1), in aGVHD. LYG1 deficiency reduced the activation of CD4+ T cells and Th1 ratio, but increased Treg ratio in vitro by MLR assay. By using major MHC mismatched aGVHD model, LYG1 deficiency in donor T cells or CD4+ T cells attenuated aGVHD severity, inhibited CD4+ T cells activation and IFN-γ expression, promoted FoxP3 expression, suppressed CXCL9 and CXCL10 expression, restrained allogeneic CD4+ T cells infiltrating in target organs. The function of LYG1 in aGVHD was also confirmed using haploidentical transplant model. Furthermore, administration of recombinant human LYG1 protein intraperitoneally aggravated aGVHD by promoting IFN-γ production and inhibiting FoxP3 expression. The effect of rhLYG1 could partially be abrogated with the absence of IFN-γ. Furthermore, LYG1 deficiency in donor T cells preserved graft-versus-tumor response. In summary, our results indicate LYG1 regulates aGVHD by the alloreactivity of CD4+ T cells and the balance of Th1 and Treg differentiation of allogeneic CD4+ T cells, targeting LYG1 maybe a novel therapeutic strategy for preventing aGVHD.
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Affiliation(s)
- Huihui Liu
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Zhengyu Yu
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Bo Tang
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Shengchao Miao
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Chenchen Qin
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Yuan Li
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Zeyin Liang
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Yongjin Shi
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Yang Zhang
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Qingya Wang
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Miao Yan
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Zhengyang Song
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Hanyun Ren
- Department of Hematology, Peking University First Hospital, Beijing, China
| | - Yujun Dong
- Department of Hematology, Peking University First Hospital, Beijing, China
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13
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D’Aveni M, Notarantonio AB, Agbogan VA, Bertrand A, Fouquet G, Gastineau P, Garfa-Traoré M, De Carvalho M, Hermine O, Rubio MT, Zavala F. Mobilized Multipotent Hematopoietic Progenitors Promote Expansion and Survival of Allogeneic Tregs and Protect Against Graft Versus Host Disease. Front Immunol 2021; 11:607180. [PMID: 33643294 PMCID: PMC7907505 DOI: 10.3389/fimmu.2020.607180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 12/31/2020] [Indexed: 11/13/2022] Open
Abstract
Allogeneic Hematopoietic Stem Cell Transplantation (Allo-HSCT) is routinely performed with peripheral blood stem cells (PBSCs) mobilized by injection of G-CSF, a growth factor which not only modulates normal hematopoiesis but also induces diverse immature regulatory cells. Based on our previous evidence that G-CSF-mobilized multipotent hematopoietic progenitors (MPP) can increase survival and proliferation of natural regulatory T cells (Tregs) in autoimmune disorders, we addressed the question how these cells come into play in mice and humans in an alloimmune setting. Using a C57BL/6 mouse model, we demonstrate that mobilized MPP enhance the immunosuppressant effect exerted by Tregs, against alloreactive T lymphocytes, both in vitro and in vivo. They do so by migrating to sites of allopriming, interacting with donor Tregs and increasing their numbers, thus reducing the lethality of graft-versus-host disease (GVHD). Protection correlates likewise with increased allospecific Treg counts. Furthermore, we provide evidence for a phenotypically similar MPP population in humans, where it shares the capacity to promote selective Treg expansion in vitro. We postulate that G-CSF-mobilized MPPs might become a valuable cellular therapy to expand donor Tregs in vivo and prevent GVHD, thereby making allo-HSCT safer for the treatment of leukemia patients.
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Affiliation(s)
- Maud D’Aveni
- Université de Lorraine, CHRU Nancy, Hematology Department, Nancy, France
- Université de Lorraine, UMR 7365 CNRS, IMoPA, Nancy, France
| | - Anne-Béatrice Notarantonio
- Université de Lorraine, CHRU Nancy, Hematology Department, Nancy, France
- Université de Lorraine, UMR 7365 CNRS, IMoPA, Nancy, France
| | - Viviane A. Agbogan
- Department of Immunology, Infectiology and Haematology, Université de Paris, Inserm U1151, CNRS UMR 8253, Institut Necker Enfants Malades (INEM), Paris, France
| | - Allan Bertrand
- Université de Lorraine, UMR 7365 CNRS, IMoPA, Nancy, France
| | - Guillemette Fouquet
- Université de Paris, INSERM UMR 1163, Imagine Institute, Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutic Implications, Paris, France
| | - Pauline Gastineau
- Department of Immunology, Infectiology and Haematology, Université de Paris, Inserm U1151, CNRS UMR 8253, Institut Necker Enfants Malades (INEM), Paris, France
| | - Meriem Garfa-Traoré
- Université de Paris, SFR Necker-UMS 3633/US24-Structure Fédérative de Recherche Necker, Plateforme d’Imagerie Cellulaire, Paris, France
| | - Marcelo De Carvalho
- Université de Lorraine, UMR 7365 CNRS, IMoPA, Nancy, France
- Université de Lorraine, CHRU Nancy, Immunology Department, Nancy, France
| | - Olivier Hermine
- Université de Paris, INSERM UMR 1163, Imagine Institute, Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutic Implications, Paris, France
| | - Marie-Thérèse Rubio
- Université de Lorraine, CHRU Nancy, Hematology Department, Nancy, France
- Université de Lorraine, UMR 7365 CNRS, IMoPA, Nancy, France
| | - Flora Zavala
- Department of Immunology, Infectiology and Haematology, Université de Paris, Inserm U1151, CNRS UMR 8253, Institut Necker Enfants Malades (INEM), Paris, France
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14
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Vandenhove B, Canti L, Schoemans H, Beguin Y, Baron F, Graux C, Kerre T, Servais S. How to Make an Immune System and a Foreign Host Quickly Cohabit in Peace? The Challenge of Acute Graft- Versus-Host Disease Prevention After Allogeneic Hematopoietic Cell Transplantation. Front Immunol 2020; 11:583564. [PMID: 33193397 PMCID: PMC7609863 DOI: 10.3389/fimmu.2020.583564] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 09/21/2020] [Indexed: 01/16/2023] Open
Abstract
Allogeneic hematopoietic cell transplantation (alloHCT) has been used as cellular immunotherapy against hematological cancers for more than six decades. Its therapeutic efficacy relies on the cytoreductive effects of the conditioning regimen but also on potent graft-versus-tumor (GVT) reactions mediated by donor-derived immune cells. However, beneficial GVT effects may be counterbalanced by acute GVHD (aGVHD), a systemic syndrome in which donor immune cells attack healthy tissues of the recipient, resulting in severe inflammatory lesions mainly of the skin, gut, and liver. Despite standard prophylaxis regimens, aGVHD still occurs in approximately 20–50% of alloHCT recipients and remains a leading cause of transplant-related mortality. Over the past two decades, advances in the understanding its pathophysiology have helped to redefine aGVHD reactions and clinical presentations as well as developing novel strategies to optimize its prevention. In this review, we provide a brief overview of current knowledge on aGVHD immunopathology and discuss current approaches and novel strategies being developed and evaluated in clinical trials for aGVHD prevention. Optimal prophylaxis of aGVHD would prevent the development of clinically significant aGVHD, while preserving sufficient immune responsiveness to maintain beneficial GVT effects and immune defenses against pathogens.
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Affiliation(s)
- Benoît Vandenhove
- Laboratory of Hematology, GIGA-I3, GIGA Institute, University of Liège, Liège, Belgium
| | - Lorenzo Canti
- Laboratory of Hematology, GIGA-I3, GIGA Institute, University of Liège, Liège, Belgium
| | - Hélène Schoemans
- Department of Clinical Hematology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Yves Beguin
- Laboratory of Hematology, GIGA-I3, GIGA Institute, University of Liège, Liège, Belgium.,Department of Clinical Hematology, CHU of Liège, University of Liège, Liège, Belgium
| | - Frédéric Baron
- Laboratory of Hematology, GIGA-I3, GIGA Institute, University of Liège, Liège, Belgium.,Department of Clinical Hematology, CHU of Liège, University of Liège, Liège, Belgium
| | - Carlos Graux
- Department of Clinical Hematology, CHU UCL Namur (Godinne), Université Catholique de Louvain, Yvoir, Belgium
| | - Tessa Kerre
- Hematology Department, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Sophie Servais
- Laboratory of Hematology, GIGA-I3, GIGA Institute, University of Liège, Liège, Belgium.,Department of Clinical Hematology, CHU of Liège, University of Liège, Liège, Belgium
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15
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Cordero E, Bulnes-Ramos A, Aguilar-Guisado M, González Escribano F, Olivas I, Torre-Cisneros J, Gavaldá J, Aydillo T, Moreno A, Montejo M, Fariñas MC, Carratalá J, Muñoz P, Blanes M, Fortún J, Suárez-Benjumea A, López-Medrano F, Roca C, Lara R, Pérez-Romero P. Effect of Influenza Vaccination Inducing Antibody Mediated Rejection in Solid Organ Transplant Recipients. Front Immunol 2020; 11:1917. [PMID: 33123119 PMCID: PMC7574595 DOI: 10.3389/fimmu.2020.01917] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/16/2020] [Indexed: 12/19/2022] Open
Abstract
Introduction Our goal was to study whether influenza vaccination induced antibody mediated rejection in a large cohort of solid organ transplant recipients (SOTR). Methods Serum anti-Human Leukocyte Antigen (HLA) antibodies were determined using class I and class II antibody-coated latex beads (FlowPRATM Screening Test) by flow cytometry. Anti-HLA antibody specificity was determined using the single-antigen bead flow cytometry (SAFC) assay and assignation of donor specific antibodies (DSA) was performed by virtual-crossmatch. Results We studied a cohort of 490 SOTR that received an influenza vaccination from 2009 to 2013: 110 (22.4%) received the pandemic adjuvanted vaccine, 59 (12%) within the first 6 months post-transplantation, 185 (37.7%) more than 6 months after transplantation and 136 (27.7%) received two vaccination doses. Overall, no differences of anti-HLA antibodies were found after immunization in patients that received the adjuvanted vaccine, within the first 6 months post-transplantation, or based on the type of organ transplanted. However, the second immunization dose increased the percentage of patients positive for anti-HLA class I significantly compared with patients with one dose (14.6% vs. 3.8%; P = 0.003). Patients with pre-existing antibodies before vaccination (15.7% for anti-HLA class I and 15.9% for class II) did not increase reactivity after immunization. A group of 75 (14.4%) patients developed de novo anti-HLA antibodies, however, only 5 (1.02%) of them were DSA, and none experienced allograft rejection. Only two (0.4%) patients were diagnosed with graft rejection with favorable outcomes and neither of them developed DSA. Conclusion Our results suggest that influenza vaccination is not associated with graft rejection in this cohort of SOTR.
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Affiliation(s)
- Elisa Cordero
- Instituto de Biomedicina de Sevilla (IBIS), University Hospital Virgen del Rocío, CSIC, University of Seville, Seville, Spain.,Department of Medicine, University of Seville, Seville, Spain
| | - Angel Bulnes-Ramos
- Instituto de Biomedicina de Sevilla (IBIS), University Hospital Virgen del Rocío, CSIC, University of Seville, Seville, Spain
| | - Manuela Aguilar-Guisado
- Instituto de Biomedicina de Sevilla (IBIS), University Hospital Virgen del Rocío, CSIC, University of Seville, Seville, Spain
| | - Francisca González Escribano
- Servicio de Inmunología, Instituto de Biomedicina de Sevilla (IBIS), University Hospital Virgen del Rocío, CSIC, University of Seville, Seville, Spain
| | - Israel Olivas
- Servicio de Inmunología, Instituto de Biomedicina de Sevilla (IBIS), University Hospital Virgen del Rocío, CSIC, University of Seville, Seville, Spain
| | - Julián Torre-Cisneros
- Reina Sofia University Hospital, Maimonides Institute for Biomedical Research (IMIBIC), University of Córdoba (UCO), Córdoba, Spain
| | - Joan Gavaldá
- Vall d'Hebron University Hospital, VHIR, Barcelona, Spain
| | - Teresa Aydillo
- Instituto de Biomedicina de Sevilla (IBIS), University Hospital Virgen del Rocío, CSIC, University of Seville, Seville, Spain
| | | | | | | | - Jordi Carratalá
- Belltvitge University Hospital, IDIBELL, University of Barcelona, Barcelona, Spain
| | - Patricia Muñoz
- Department of Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain.,Instituto de Investigaciónn Biomédica Gregorio Marañón, Madrid, Spain.,Department of Medicine, Universidad Complutense de Madrid, Madrid, Spain.,CIBERES (CB06/06/0058), Madrid, Spain
| | | | - Jesús Fortún
- University Hospital Ramón y Cajal, Madrid, Spain
| | | | - Francisco López-Medrano
- Unit of Infectious Diseases, University Hospital 12 de Octubre, Madrid, Spain.,Instituto de Investigación Biomédica imas12, Madrid, Spain.,Department of Medicine, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Cristina Roca
- Instituto de Biomedicina de Sevilla (IBIS), University Hospital Virgen del Rocío, CSIC, University of Seville, Seville, Spain
| | - Rosario Lara
- Reina Sofia University Hospital, Maimonides Institute for Biomedical Research (IMIBIC), University of Córdoba (UCO), Córdoba, Spain
| | - Pilar Pérez-Romero
- National Centre for Microbiology, Instituto de Salud Carlos III, Madrid, Spain
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16
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Ye Y, Gaugler B, Mohty M, Malard F. Plasmacytoid dendritic cell biology and its role in immune-mediated diseases. Clin Transl Immunology 2020; 9:e1139. [PMID: 32489664 PMCID: PMC7248678 DOI: 10.1002/cti2.1139] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 04/27/2020] [Accepted: 04/27/2020] [Indexed: 12/26/2022] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are a unique subset of dendritic cells specialised in secreting high levels of type I interferons. pDCs play a crucial role in antiviral immunity and have been implicated in the initiation and development of many autoimmune and inflammatory diseases. This review summarises the latest advances in recent years in several aspects of pDC biology, with special focus on pDC heterogeneity, pDC development via the lymphoid pathway, and newly identified proteins/pathways involved in pDC trafficking, nucleic acid sensing and interferon production. Finally, we also highlight the current understanding of pDC involvement in autoimmunity and alloreactivity, and opportunities for pDC‐targeting therapies in these diseases. These new insights have contributed to answers to several fundamental questions remaining in pDC biology and may pave the way to successful pDC‐targeting therapy in the future.
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Affiliation(s)
- Yishan Ye
- INSERM, Centre de Recherche Saint-Antoine (CRSA) Sorbonne Université Paris France.,Bone Marrow Transplantation Center The First Affiliated Hospital School of Medicine Zhejiang University Hangzhou China
| | - Béatrice Gaugler
- INSERM, Centre de Recherche Saint-Antoine (CRSA) Sorbonne Université Paris France
| | - Mohamad Mohty
- INSERM, Centre de Recherche Saint-Antoine (CRSA) Sorbonne Université Paris France.,Service d'Hématologie Clinique et Thérapie Cellulaire AP-HP, Hôpital Saint-Antoine Sorbonne Université Paris France
| | - Florent Malard
- INSERM, Centre de Recherche Saint-Antoine (CRSA) Sorbonne Université Paris France.,Service d'Hématologie Clinique et Thérapie Cellulaire AP-HP, Hôpital Saint-Antoine Sorbonne Université Paris France
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17
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Luo X, Cui H, Cai L, Zhu W, Yang WC, Patrick M, Zhu S, Huang J, Yao X, Yao Y, He Y, Ji Y. Selection of a Clinical Lead TCR Targeting Alpha-Fetoprotein-Positive Liver Cancer Based on a Balance of Risk and Benefit. Front Immunol 2020; 11:623. [PMID: 32425926 PMCID: PMC7203609 DOI: 10.3389/fimmu.2020.00623] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/19/2020] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer with a poor prognosis and limited therapeutic options. Alpha-fetoprotein (AFP), an established clinical biomarker of HCC, has been employed as an attractive target for T cell-based immunotherapy against this disease given its high expression in the tumor and restricted expression in normal tissues. We have identified a number of T cell receptors (TCRs) recognizing the HLA-A*02:01 restricted AFP158-166 peptide FMNKFIYEI, providing a TCR candidate pool for identifying TCRs with optimal clinical benefit. To select the ideal AFP TCR for clinical use, we evaluated the efficacy and safety profile of 7 TCRs by testing their potency toward AFP-expressing HCC cells and their specificity based upon reactivity to normal and transformed cells covering a wide variety of primary cell types and HLA serotypes. Furthermore, we assessed their cross-reactivity to potential protein candidates in the human genome by an extensive alanine scan (X-scan). We first selected three TCR candidates based on the in vitro anti-tumor activity. Next we eliminated two potential cross-reactive TCRs based on their reactivity against normal and transformed cells covering a variety of primary cell types and HLA serotypes, respectively. We then excluded the potential cross-reactivity of the selected TCR with a protein candidate identified by X-scan. At present we have selected an AFP TCR with the optimal affinity, function, and safety profile, bearing properties that are expected to allow AFP TCR redirected T cells to specifically differentiate between AFP levels on tumor and normal tissues. An early phase clinical trial using T cells transduced with this TCR to treat HCC patients (NCT03971747) has been initiated.
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Affiliation(s)
- Xiaobing Luo
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
| | - Huijuan Cui
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
| | - Lun Cai
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, United States
| | - Wei Zhu
- CodexSage LLC., Germantown, MD, United States
| | - Wei-Chih Yang
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
| | - Michael Patrick
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
| | - Shigui Zhu
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
| | - Jiaqi Huang
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
| | - Xin Yao
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
| | - Yihong Yao
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
| | - Yukai He
- Georgia Cancer Center, Medical College of Georgia, Augusta, GA, United States
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, United States
| | - Yun Ji
- Cellular Biomedicine Group Inc., Gaithersburg, MD, United States
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18
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Wallstabe J, Bussemer L, Groeber-Becker F, Freund L, Alb M, Dragan M, Waaga-Gasser AM, Jakubietz R, Kneitz H, Rosenwald A, Rebhan S, Walles H, Mielke S. Inflammation-induced tissue damage mimicking GvHD in human skin models as test-platform for immunotherapeutics. ALTEX 2020; 37:429-440. [PMID: 32302003 DOI: 10.14573/altex.1907181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 04/06/2020] [Indexed: 11/23/2022]
Abstract
With cellular products being on the front run there is a rising demand for non-animal-based test platforms to predict, study and treat undesired immunity. Here, we generated human organotypic skin models from human biopsies isolating and expanding keratinocytes, fibroblasts and microvascular endothelial cells finally allowing to seed these components on a collagen matrix or a biological vascularized scaffold matrix in a bioreactor. Afterwards, we were able to induce inflammation-based tissue damage by pre-stimulated mismatched allogeneic lymphocytes and/or inflammatory cytokine containing supernatants histomorphologically mimicking severe graft versus host disease (GvHD) of the skin. The effects could be prevented by the addition of immunosuppressants to the models. Consequently, these models would harbor a promising potential to serve as a test platform for the prediction, prevention and treatment of GvHD. This would also allow functional studies of immune effectors and suppressors including but not limited to allodepleted lymphocytes, gamma-delta T cells, regulatory T cells and mesenchymal stromal cells which would otherwise be limited to animal models. Thus, the current test platform developed with the limitation given that no professional APC are in place could highly reduce animal testing for investigation of novel immune therapies.
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Affiliation(s)
- Julia Wallstabe
- Department of Internal Medicine II, Center for Allogeneic Stem Cell Transplantation, Würzburg University Medical Center, Würzburg, Germany
| | - Lydia Bussemer
- Department of Internal Medicine II, Center for Allogeneic Stem Cell Transplantation, Würzburg University Medical Center, Würzburg, Germany
| | - Florian Groeber-Becker
- Department for Tissue Engineering and Regenerative Medicine, Würzburg University Medical Center, Würzburg, Germany.,Translational Center for Regenerative Therapies, Fraunhofer Institute for Silicate Research ISC, Würzburg, Germany
| | - Lukas Freund
- Department of Internal Medicine II, Center for Allogeneic Stem Cell Transplantation, Würzburg University Medical Center, Würzburg, Germany
| | - Miriam Alb
- Department of Internal Medicine II, Center for Allogeneic Stem Cell Transplantation, Würzburg University Medical Center, Würzburg, Germany
| | - Mariola Dragan
- Department of Surgery I, Würzburg University Medical Center, Würzburg, Germany
| | | | - Rafael Jakubietz
- Department of Surgery II, Würzburg University Medical Center, Würzburg, Germany
| | - Hermann Kneitz
- Department of Dermatology, Section for Histopathology, Würzburg University Medical Center, Würzburg, Germany
| | - Andreas Rosenwald
- Institute of Pathology, University of Würzburg, and Comprehensive Cancer Center Mainfranken, Würzburg, Germany
| | - Silke Rebhan
- Department of Internal Medicine II, Center for Allogeneic Stem Cell Transplantation, Würzburg University Medical Center, Würzburg, Germany
| | - Heike Walles
- Department for Tissue Engineering and Regenerative Medicine, Würzburg University Medical Center, Würzburg, Germany.,Translational Center for Regenerative Therapies, Fraunhofer Institute for Silicate Research ISC, Würzburg, Germany
| | - Stephan Mielke
- Karolinska Institute and University Hospital, Department of Laboratory Medicine and Medicine Huddinge, Department of Cell Therapy and Allogeneic Stem Cell Transplantation (CAST), Stockholm, Sweden.,Department of Internal Medicine II, Center for Allogeneic Stem Cell Transplantation, Würzburg University Medical Center, Würzburg, Germany
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19
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Grau-Vorster M, López-Montañés M, Cantó E, Vives J, Oliver-Vila I, Barba P, Querol S, Rudilla F. Characterization of a Cytomegalovirus-Specific T Lymphocyte Product Obtained Through a Rapid and Scalable Production Process for Use in Adoptive Immunotherapy. Front Immunol 2020; 11:271. [PMID: 32161589 PMCID: PMC7052482 DOI: 10.3389/fimmu.2020.00271] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 02/03/2020] [Indexed: 12/19/2022] Open
Abstract
Immunosuppressed patients are susceptible to virus reactivation or de novo infection. Adoptive immunotherapy, based on virus-specific T lymphocytes (VST), can prevent or treat viral diseases. However, donor availability, HLA-compatibility restrictions, high costs, and time required for the production of personalized medicines constitute considerable limitations to this treatment. Ex vivo rapid and large-scale expansion of VST, compliant with current good manufacturing practice (cGMP) standards, with an associated cell donor registry would overcome these limitations. This study aimed to characterize a VST product obtained through an expansion protocol transferable to cGMP standards. Antigenic stimulus consisted of cytomegalovirus (CMV) pp65 peptide pool-pulsed autologous dendritic cells (DCs) derived from monocytes. G-Rex technology, cytokines IL-2, IL-7, and IL-15, and anti-CD3 and anti-CD28 antibodies were used for culture. At day 14 of cell culture, the final product was characterized regarding T cell subsets, specificity, and functionality. The final product, comprised mainly CD4+ and CD8+ T lymphocytes (49.2 ± 24.7 and 42.3 ± 25.2, respectively). The culture conditions made it possible to achieve at least a 98.89-fold increase in pp65-specific CD3+ IFN-γ+ cells. These cells were specific, as pp65-specific cytotoxicity was demonstrated. Additionally, in complete HLA mismatch and without the presence of pp65, alloreactivity resulted in <5% cell lysis. In conclusion, a cGMP scalable process for the generation of a large number of doses of CMV-specific cytotoxic T cells was successfully performed.
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Affiliation(s)
- Marta Grau-Vorster
- Cell Therapy Service, Banc de Sang i Teixits, Barcelona, Spain.,Transfusion Medicine Group, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - María López-Montañés
- Cell Therapy Service, Banc de Sang i Teixits, Barcelona, Spain.,Transfusion Medicine Group, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ester Cantó
- Cell Therapy Service, Banc de Sang i Teixits, Barcelona, Spain.,Transfusion Medicine Group, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Joaquim Vives
- Cell Therapy Service, Banc de Sang i Teixits, Barcelona, Spain.,Musculoskeletal Tissue Engineering Group, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.,Medicine Department, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | - Pere Barba
- Hematology Department, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Sergi Querol
- Cell Therapy Service, Banc de Sang i Teixits, Barcelona, Spain
| | - Francesc Rudilla
- Cell Therapy Service, Banc de Sang i Teixits, Barcelona, Spain.,Transfusion Medicine Group, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
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20
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Zaghi E, Calvi M, Di Vito C, Mavilio D. Innate Immune Responses in the Outcome of Haploidentical Hematopoietic Stem Cell Transplantation to Cure Hematologic Malignancies. Front Immunol 2019; 10:2794. [PMID: 31849972 PMCID: PMC6892976 DOI: 10.3389/fimmu.2019.02794] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/14/2019] [Indexed: 12/30/2022] Open
Abstract
In the context of allogeneic transplant platforms, human leukocyte antigen (HLA)-haploidentical hematopoietic stem cell transplantation (haplo-HSCT) represents one of the latest and most promising curative strategies for patients affected by high-risk hematologic malignancies. Indeed, this platform ensures a suitable stem cell source immediately available for virtually any patents in need. Moreover, the establishment in recipients of a state of immunologic tolerance toward grafted hematopoietic stem cells (HSCs) remarkably improves the clinical outcome of this transplant procedure in terms of overall and disease free survival. However, the HLA-mismatch between donors and recipients has not been yet fully exploited in order to optimize the Graft vs. Leukemia effect. Furthermore, the efficacy of haplo-HSCT is currently hampered by several life-threatening side effects including the onset of Graft vs. Host Disease (GvHD) and the occurrence of opportunistic viral infections. In this context, the quality and the kinetic of the immune cell reconstitution (IR) certainly play a major role and several experimental efforts have been greatly endorsed to better understand and accelerate the post-transplant recovery of a fully competent immune system in haplo-HSCT. In particular, the IR of innate immune system is receiving a growing interest, as it recovers much earlier than T and B cells and it is able to rapidly exert protective effects against both tumor relapses, GvHD and the onset of life-threatening opportunistic infections. Herein, we review our current knowledge in regard to the kinetic and clinical impact of Natural Killer (NK), γδ and Innate lymphoid cells (ILCs) IRs in both allogeneic and haplo-HSCT. The present paper also provides an overview of those new therapeutic strategies currently being implemented to boost the alloreactivity of the above-mentioned innate immune effectors in order to ameliorate the prognosis of patients affected by hematologic malignancies and undergone transplant procedures.
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Affiliation(s)
- Elisa Zaghi
- Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Milan, Italy
| | - Michela Calvi
- Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Milan, Italy.,Department of Medical Biotechnologies and Translational Medicine (BioMeTra), University of Milan, Milan, Italy
| | - Clara Di Vito
- Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Milan, Italy
| | - Domenico Mavilio
- Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Milan, Italy.,Department of Medical Biotechnologies and Translational Medicine (BioMeTra), University of Milan, Milan, Italy
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21
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Lalfer M, Chappert P, Carpentier M, Urbain D, Davoust JM, Gross DA. Foxp3 + Regulatory and Conventional CD4 + T Cells Display Similarly High Frequencies of Alloantigen-Reactive Cells. Front Immunol 2019; 10:521. [PMID: 30941146 PMCID: PMC6434998 DOI: 10.3389/fimmu.2019.00521] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 02/26/2019] [Indexed: 01/22/2023] Open
Abstract
Foxp3+ regulatory T cells (Tregs) play a major role in acquired immune tolerance to allogenic transplants. Their suppressive activity is thought to require T cell receptor (TCR)-driven antigen recognition; little, however, is known about the fraction of Tregs able to recognize alloantigens within this T cell subset primarily educated against self-antigens. Performing transfer experiments of Tregs or conventional T cells (Tconv) into both lymphoreplete and lymphopenic mice, we observed a similarly high proportion of cells signaling through their TCR and proliferating in allogenic hosts. Furthermore, using an in vivo proliferation assay with limited T cell numbers infused into lymphopenic mice, we found that the overall frequency of alloreactive Tregs was similar if not higher to that of alloreactive Tconv. Overall our study highlights a noticeably high level of alloreactive Foxp3+ regulatory T cells accounting for their predominant role in transplantation tolerance.
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Affiliation(s)
- Mélanie Lalfer
- Institut National de la Santé et de la Recherche Médicale U1151 - Centre National de la Recherche Scientifique UMR 8253, Institut Necker-Enfants Malades, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Pascal Chappert
- Institut National de la Santé et de la Recherche Médicale U1151 - Centre National de la Recherche Scientifique UMR 8253, Institut Necker-Enfants Malades, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Maxime Carpentier
- Institut National de la Santé et de la Recherche Médicale U1151 - Centre National de la Recherche Scientifique UMR 8253, Institut Necker-Enfants Malades, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Dominique Urbain
- Institut National de la Santé et de la Recherche Médicale U1151 - Centre National de la Recherche Scientifique UMR 8253, Institut Necker-Enfants Malades, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Jean M Davoust
- Institut National de la Santé et de la Recherche Médicale U1151 - Centre National de la Recherche Scientifique UMR 8253, Institut Necker-Enfants Malades, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - David-Alexandre Gross
- Institut National de la Santé et de la Recherche Médicale U1151 - Centre National de la Recherche Scientifique UMR 8253, Institut Necker-Enfants Malades, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
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22
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Farkas AM, Baranyi U, Böhmig GA, Unger L, Hopf S, Wahrmann M, Regele H, Mahr B, Schwarz C, Hock K, Pilat N, Kristo I, Mraz J, Lupinek C, Thalhamer J, Bond G, Kuessel L, Wlodek E, Martin J, Clatworthy M, Pettigrew G, Valenta R, Wekerle T. Allograft rejection is associated with development of functional IgE specific for donor MHC antigens. J Allergy Clin Immunol 2019; 143:335-345.e12. [PMID: 30009843 DOI: 10.1016/j.jaci.2018.06.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 06/07/2018] [Accepted: 06/14/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND Donor-specific antibodies of the IgG isotype are measured routinely for diagnostic purposes in renal transplant recipients and are associated with antibody-mediated rejection and long-term graft loss. OBJECTIVE This study aimed to investigate whether MHC-specific antibodies of the IgE isotype are induced during allograft rejection. METHODS Anti-MHC/HLA IgE levels were measured in sera of mice grafted with skin or heart transplants from various donor strains and in sera of kidney transplant patients with high levels of HLA IgG. Mediator release was triggered in vitro by stimulating basophils that were coated with murine or human IgE-positive serum, respectively, with specific recombinant MHC/HLA antigens. Kidney tissue samples obtained from organ donors were analyzed by using flow cytometry for cells expressing the high-affinity receptor for IgE (FcεRI). RESULTS Donor MHC class I- and MHC class II-specific IgE was found on acute rejection of skin and heart grafts in several murine strain combinations, as well as during chronic antibody-mediated heart graft rejection. Anti-HLA IgE, including donor HLA class I and II specificities, was identified in a group of sensitized transplant recipients. Murine and human anti-MHC/HLA IgE triggered mediator release in coated basophils on stimulation with specific MHC/HLA antigens. HLA-specific IgE was not linked to atopy, and allergen-specific IgE present in allergic patients did not cross-react with HLA antigens. FcεRI+ cells were found in the human renal cortex and medulla and provide targets for HLA-specific IgE. CONCLUSION These results demonstrate that MHC/HLA-specific IgE develops during an alloresponse and is functional in mediating effector mechanisms.
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Affiliation(s)
- Andreas M Farkas
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Ulrike Baranyi
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria; Cardiac Surgery Laboratory, Medical University of Vienna, Vienna, Austria
| | - Georg A Böhmig
- Division of Nephrology and Dialysis, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Lukas Unger
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Stefan Hopf
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Markus Wahrmann
- Division of Nephrology and Dialysis, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Heinz Regele
- Institute of Clinical Pathology, Medical University of Vienna, Vienna, Austria
| | - Benedikt Mahr
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Christoph Schwarz
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Karin Hock
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Nina Pilat
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Ivan Kristo
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Jasmin Mraz
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Christian Lupinek
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center of Physiology and Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Josef Thalhamer
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Gregor Bond
- Division of Nephrology and Dialysis, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Lorenz Kuessel
- Department for Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - Elizabeth Wlodek
- Department of Surgery, University of Cambridge, Cambridge, United Kingdom
| | - Jack Martin
- Department of Surgery, University of Cambridge, Cambridge, United Kingdom
| | - Menna Clatworthy
- Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Gavin Pettigrew
- Department of Surgery, University of Cambridge, Cambridge, United Kingdom
| | - Rudolf Valenta
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center of Physiology and Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Thomas Wekerle
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Vienna, Austria.
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23
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Barbon CM, Janec KJ, Kelner RH, Norton JE, Guinan EC. Alloanergization Method for Inducing Allospecific Hyporesponsiveness in PBMC Exposed to Allostimulation In Vitro in the Context of Costimulatory Molecule Blockade. Methods Mol Biol 2019; 1899:103-18. [PMID: 30649768 DOI: 10.1007/978-1-4939-8938-6_8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Alloantigen-specific hyporesponsiveness can be induced in alloreactive T cells contained within the whole peripheral blood mononuclear cell (PBMC) population by stimulating these responder cells ex vivo with HLA-mismatched stimulator PBMC as the antigen presenting cell (APC) source, in the presence of a CD28 costimulation blocking agent. As a result of this approach, specific alloreactivity is markedly decreased (by 1-2 logs), but third-party alloresponses and in vitro responses relying on the activation of pathogen- and tumor-associated antigen T-cell functional activities are not globally impinged upon (Guinan et al. N Engl J Med 340(22):1704-1714, 1999, Davies et al. Transplantation 86(6):854-864, 2008, Davies et al. Cell Transplant 21(9):2047-61, 2012). This method has been used clinically to alloanergize bone marrow and PBMC allografts, creating ex vivo cell therapies for adoptive transfer to blood cancer patients at high risk of disease relapse whose best option was to receive haploidentical hematopoietic cell transplants. These early phase trials consisting of, or containing, alloanergized T-cell infusions show promise in reducing graft-versus-host disease (GvHD), providing more rapid immune reconstitution, and decreasing severe post-transplant infectious complications and disease relapse. Herein, we describe this straightforward technique for generating alloanergized PBMC as it is performed in the research lab setting using belatacept for CD28-mediated costimulatory blockade (CSB) and PBMC isolated by Ficoll Hypaque gradient centrifugation as responders and APC. We also describe methods for evaluating subsequent alloproliferation to first and third party stimulation as well as assessment of cell division, pathogen-specific immunity, or allosuppression. The technique has successfully been transferred to collaborating labs, largely owing to the flexibility of using fresh or frozen PBMC, the lack of a requirement for specially isolated APC populations, and the ability to scale up or scale down the cell numbers that are to be anergized.
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24
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Yang ZG, Wen RT, Feng JS, Cao PJ, Zhou HT, Liu WX. Recipient-Derived Allo-iTregs Induced by Donor DCs Effectively Inhibit the Proliferation of Donor T Cells and Reduce GVHD. Anat Rec (Hoboken) 2018; 302:825-836. [PMID: 30312018 DOI: 10.1002/ar.23972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 05/10/2018] [Accepted: 06/04/2018] [Indexed: 11/09/2022]
Abstract
To compare the potency of recipient-derived, antigen-specific regulatory T cells induced by different dendritic cells (DCs; iTregs) and freshly isolated natural regulatory T cells (nTregs) in preventing mouse graft-versus-host disease (GVHD) after allogeneic bone marrow transplantation (BMT). CD4+ T cells from recipient BALB/c mice were stimulated with DCs from recipient BALB/c (syn-DCs), donor B6 (allo-DCs), and third-party C3H (third-party-DCs) mice to induce different iTregs. In parallel, nTregs were isolated from spleen cells of recipient BALB/c (syn-nTregs) and donor B6 (allo-nTregs) mice using magnetic-activated cell sorting. Mixed lymphocyte reaction (MLR) assays were performed to evaluate the suppressive ability of these various regulatory T cells (Tregs). Both the iTregs and nTregs were transfused to GVHD mice on Days 0, 1, 3, and 5. Body weight, GVHD score, and survival time were monitored. Peripheral Tregs were subsequently examined on Days 7, 14, 21, and 28 after BMT, while chimerism was evaluated on Days 14 and 60. Histopathology of colon, liver, and spleen were also performed. DCs markedly induced CD25+ and Foxp3+ expression on CD4+ T cells. The allo-DC-induced Tregs (allo-iTregs) suppressed the proliferation of alloreactive T cells better than the other iTregs/nTregs in MLR assays (P < 0.05). Meanwhile, transfusion of the allo-iTregs reduced the severity of GVHD (P < 0.05), increased survival time compared with the GVHD group (P < 0.05), and enhanced the chimerism proportion. On Day 28 after BMT, the allo-iTregs group had the highest frequency of peripheral Tregs (P < 0.05). Recipient-derived allo-iTregs induced by donor DCs included predominant clones that specifically recognized donor antigens. These allo-iTregs not only prevented GVHD by suppressing the proliferation of donor-alloreactive T cells, but also promoted engraftment, and prolonged the survival of GVHD mice. Anat Rec, 2018. © 2018 Wiley Periodicals, Inc. Anat Rec, 302:825-836, 2019. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Zhi-Gang Yang
- Affiliated Central People's Hospital of Zhanjiang of Guangdong Medical University, Zhanjiang, Guangdong, 524045, People's Republic of China.,Guangdong Medical University, Zhanjiang, Guangdong, 524001, People's Republic of China
| | - Rui-Ting Wen
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524001, People's Republic of China
| | - Jin-Shan Feng
- Guangdong Medical University, Zhanjiang, Guangdong, 524001, People's Republic of China
| | - Pei-Jie Cao
- Guangdong Medical University, Zhanjiang, Guangdong, 524001, People's Republic of China
| | - Hai-Tao Zhou
- Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, Guangdong, 510000, People's Republic of China
| | - Wen-Xin Liu
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524001, People's Republic of China
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25
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Chen JC, Ou LS, Chan CC, Kuo ML, Tseng LY, Chang HL. In Utero Exposure to Exosomal and B-Cell Alloantigens Lessens Alloreactivity of Recipients' Lymphocytes Rather than Confers Allograft Tolerance. Front Immunol 2018; 9:418. [PMID: 29552016 PMCID: PMC5840197 DOI: 10.3389/fimmu.2018.00418] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 02/15/2018] [Indexed: 01/23/2023] Open
Abstract
According to actively acquired tolerance, antigen exposure before full immune development in fetal or early neonatal life will cause tolerance to this specific antigen. In this study, we aimed to examine whether allogeneic tolerance could be elicited by in utero exposure to surface MHC antigens of allogenic cells or soluble form of MHC exosomes. Gestational day 14 FVB/N fetuses were subjected to intraperitoneal injection of allogeneic major histocompatibility complex (MHC) exosomes or highly enriched B-cells. Postnatally, the recipients were examined for the immune responses to donor alloantigens by lymphocyte proliferative reactions and skin transplantation. In utero exposure to allogeneic MHC exosomes abolished the alloreactivity of recipients’ lymphocytes to the alloantigens, but could not confer skin allograft tolerance. In utero transplantation of highly enriched allogeneic B-cells generated low-level B-cell chimerism in the recipients. However, it only extended the survivals of skin allograft by a few days despite the lack of donor-specific alloreactivity of recipients’ lymphocyte. Thus, an early in utero contact with exosomal or B-cell alloantigens did not lead to full skin tolerance but rather, at best, only to delayed skin rejection in the presence of microchimerism made by B-cell inocula. These results argued against the theory of actively acquired tolerance, and implicated that in utero exposure to marrow cells in previous studies was a unique model of allo-tolerance induction that involved the establishment of significant hematopoietic chimerism. Taken together with the discovery of in utero sensitization to ovalbumin in our previous studies, the immunological consequences of fetal exposure to foreign antigens might vary according to the type or nature of antigens introduced.
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Affiliation(s)
- Jeng-Chang Chen
- Department of Surgery, Chang Gung Children's Hospital, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Liang-Shiou Ou
- Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chang Gung Children's Hospital, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Cheng-Chi Chan
- Department of Microbiology and Immunology, College of Medicine, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Ming-Ling Kuo
- Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chang Gung Children's Hospital, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Microbiology and Immunology, College of Medicine, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Li-Yun Tseng
- Pediatric Research Center, Chang Gung Children's Hospital, Taoyuan, Taiwan
| | - Hsueh-Ling Chang
- Pediatric Research Center, Chang Gung Children's Hospital, Taoyuan, Taiwan
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26
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Wang Y, Singh NK, Spear TT, Hellman LM, Piepenbrink KH, McMahan RH, Rosen HR, Vander Kooi CW, Nishimura MI, Baker BM. How an alloreactive T-cell receptor achieves peptide and MHC specificity. Proc Natl Acad Sci U S A 2017; 114:E4792-801. [PMID: 28572406 DOI: 10.1073/pnas.1700459114] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
T-cell receptor (TCR) allorecognition is often presumed to be relatively nonspecific, attributable to either a TCR focus on exposed major histocompatibility complex (MHC) polymorphisms or the degenerate recognition of allopeptides. However, paradoxically, alloreactivity can proceed with high peptide and MHC specificity. Although the underlying mechanisms remain unclear, the existence of highly specific alloreactive TCRs has led to their use as immunotherapeutics that can circumvent central tolerance and limit graft-versus-host disease. Here, we show how an alloreactive TCR achieves peptide and MHC specificity. The HCV1406 TCR was cloned from T cells that expanded when a hepatitis C virus (HCV)-infected HLA-A2- individual received an HLA-A2+ liver allograft. HCV1406 was subsequently shown to recognize the HCV nonstructural protein 3 (NS3):1406-1415 epitope with high specificity when presented by HLA-A2. We show that NS3/HLA-A2 recognition by the HCV1406 TCR is critically dependent on features unique to both the allo-MHC and the NS3 epitope. We also find cooperativity between structural mimicry and a crucial peptide "hot spot" and demonstrate its role, along with the MHC, in directing the specificity of allorecognition. Our results help explain the paradox of specificity in alloreactive TCRs and have implications for their use in immunotherapy and related efforts to manipulate TCR recognition, as well as alloreactivity in general.
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27
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Schachtner T, Stein M, Reinke P. Sepsis after renal transplantation: Clinical, immunological, and microbiological risk factors. Transpl Infect Dis 2017; 19. [PMID: 28296035 DOI: 10.1111/tid.12695] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 08/30/2016] [Accepted: 12/31/2016] [Indexed: 12/29/2022]
Abstract
BACKGROUND As immunosuppressive therapy and allograft survival have improved, the increased incidence of sepsis has become a major hurdle of disease-free survival after renal transplantation. METHODS We identified 112 of 957 kidney transplant recipients (KTRs) with sepsis. In all, 31 KTRs developed severe sepsis or septic shock, and 30 KTRs died from sepsis. KTRs without sepsis were used for comparison. CMV-specific and alloreactive T cells were measured using an interferon-γ Elispot assay. The extent of immunosuppression was quantified by lymphocyte subpopulations. RESULTS Five-year patient survival was 70.3% with sepsis compared to 88.2% without (P<.001). Five-year estimated glomerular filtration rate was lower in KTRs developing sepsis (P<.001). Upon multivariate analysis, diabetes, lymphocyte-depleting induction, donor age, CMV replication, and acute rejection increased the risk of sepsis (P<.05). Age, diabetes, underweight/obesity, and pneumonia as site of infection were predictive factors of mortality (P<.05). Early-onset sepsis was associated with decreased CD3+ and CD4+ T cells pre-transplantation (P<.05). Impaired CMV-specific cellular immunity pre-transplantation was associated with CMV replication and early-onset sepsis (P<.05). High frequencies of alloreactive T cells were associated with acute rejection, lymphocyte-depleting rejection treatment, and early-onset sepsis (P<.05). CONCLUSION KTRs developing sepsis show inferior patient survival and allograft function. Identified risk factors and differences in lymphocyte counts, CMV-specific immunity, and alloreactivity may prove useful to identify KTRs at increased risk.
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Affiliation(s)
- Thomas Schachtner
- Department of Nephrology and Internal Intensive Care, Charité University Medicine Berlin, Campus Virchow Clinic, Berlin, Germany.,Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany
| | - Maik Stein
- Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany
| | - Petra Reinke
- Department of Nephrology and Internal Intensive Care, Charité University Medicine Berlin, Campus Virchow Clinic, Berlin, Germany.,Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany
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28
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Li Pira G, Di Cecca S, Biagini S, Girolami E, Cicchetti E, Bertaina V, Quintarelli C, Caruana I, Lucarelli B, Merli P, Pagliara D, Brescia LP, Bertaina A, Montanari M, Locatelli F. Preservation of Antigen-Specific Functions of αβ T Cells and B Cells Removed from Hematopoietic Stem Cell Transplants Suggests Their Use As an Alternative Cell Source for Advanced Manipulation and Adoptive Immunotherapy. Front Immunol 2017; 8:332. [PMID: 28386262 PMCID: PMC5362590 DOI: 10.3389/fimmu.2017.00332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 03/08/2017] [Indexed: 12/20/2022] Open
Abstract
Hematopoietic stem cell transplantation is standard therapy for numerous hematological diseases. The use of haploidentical donors, sharing half of the HLA alleles with the recipient, has facilitated the use of this procedure as patients can rely on availability of a haploidentical donor within their family. Since HLA disparity increases the risk of graft-versus-host disease, T-cell depletion has been used to remove alloreactive lymphocytes from the graft. Selective removal of αβ T cells, which encompass the alloreactive repertoire, combined with removal of B cells to prevent EBV-related lymphoproliferative disease, proved safe and effective in clinical studies. Depleted αβ T cells and B cells are generally discarded as by-products. Considering the possible use of donor T cells for donor lymphocyte infusions or for generation of pathogen-specific T cells as mediators of graft-versus-infection effect, we tested whether cells in the discarded fractions were functionally intact. Response to alloantigens and to viral antigens comparable to that of unmanipulated cells indicated a functional integrity of αβ T cells, in spite of the manipulation used for their depletion. Furthermore, B cells proved to be efficient antigen-presenting cells, indicating that antigen uptake, processing, and presentation were fully preserved. Therefore, we propose that separated αβ T lymphocytes could be employed for obtaining pathogen-specific T cells, applying available methods for positive selection, which eventually leads to indirect allodepletion. In addition, these functional T cells could undergo additional manipulation, such as direct allodepletion or genetic modification.
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Affiliation(s)
- Giuseppina Li Pira
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Stefano Di Cecca
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Simone Biagini
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Elia Girolami
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Elisabetta Cicchetti
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Valentina Bertaina
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Concetta Quintarelli
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy; Department of "Medicina Clinica e Chirurgia", University of Naples Federico II, Naples, Italy
| | - Ignazio Caruana
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Barbarella Lucarelli
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Pietro Merli
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Daria Pagliara
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Letizia Pomponia Brescia
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Alice Bertaina
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Mauro Montanari
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital , Rome , Italy
| | - Franco Locatelli
- Department of Pediatric Hematology and Oncology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy; Department of Pediatrics, University of Pavia, Pavia, Italy
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29
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de Leur K, Dor FJMF, Dieterich M, van der Laan LJW, Hendriks RW, Baan CC. IL-21 Receptor Antagonist Inhibits Differentiation of B Cells toward Plasmablasts upon Alloantigen Stimulation. Front Immunol 2017; 8:306. [PMID: 28373876 PMCID: PMC5357809 DOI: 10.3389/fimmu.2017.00306] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 03/03/2017] [Indexed: 12/04/2022] Open
Abstract
Interaction between T follicular helper (Tfh) cells and B cells is complex and involves various pathways, including the production of IL-21 by the Tfh cells. Secretion of IL-21 results in B cell differentiation toward immunoglobulin-producing plasmablasts. In patients after kidney transplantation, the formation of alloantibodies produced by donor antigen-activated B cells are a major cause of organ failure. In this allogeneic response, the role of IL-21-producing Tfh cells that regulate B cell differentiation is unknown. Here, we tested, in an alloantigen-driven setting, whether Tfh cell help signals control B cell differentiation with its dependency on IL-21. Pre-transplantation patient PBMCs were sorted into pure CD4posCXCR5pos Tfh cells and CD19posCD27pos memory B cells and stimulated with donor antigen in the presence or absence of an IL-21 receptor (IL-21R) antagonist (αIL-21R). Donor antigen stimulation initiated expression of the activation markers inducible co-stimulator (ICOS) and programmed death 1 (PD-1) on Tfh cells and a shift toward a mixed Tfh2 and Tfh17 phenotype. The memory B cells underwent class switch recombination and differentiated toward IgM- and IgG-producing plasmablasts. In the presence of αIL-21R, a dose-dependent inhibition of STAT3 phosphorylation was measured in both T and B cells. Blockade of the IL-21R did not have an effect on PD-1 and ICOS expression on Tfh cells but significantly inhibited B cell differentiation. The proportion of plasmablasts decreased by 78% in the presence of αIL-21R. Moreover, secreted IgM and IgG2 levels were significantly lower in the presence of αIL-21R. In conclusion, our results demonstrate that IL-21 produced by alloantigen-activated Tfh cells controls B cell differentiation toward antibody producing plasmablasts. The IL-21R might, therefore, be a useful target in organ transplantation to prevent antigen-driven immune responses leading to graft failure.
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Affiliation(s)
- Kitty de Leur
- Department of Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, Netherlands; Division of HPB and Transplant Surgery, Department of Surgery, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Frank J M F Dor
- Division of HPB and Transplant Surgery, Department of Surgery, Erasmus MC, University Medical Center , Rotterdam , Netherlands
| | - Marjolein Dieterich
- Department of Internal Medicine, Erasmus MC, University Medical Center , Rotterdam , Netherlands
| | - Luc J W van der Laan
- Division of HPB and Transplant Surgery, Department of Surgery, Erasmus MC, University Medical Center , Rotterdam , Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center , Rotterdam , Netherlands
| | - Carla C Baan
- Department of Internal Medicine, Erasmus MC, University Medical Center , Rotterdam , Netherlands
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30
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Bettens F, Buhler S, Tiercy JM. Allorecognition of HLA-C Mismatches by CD8 + T Cells in Hematopoietic Stem Cell Transplantation Is a Complex Interplay between Mismatched Peptide-Binding Region Residues, HLA-C Expression, and HLA-DPB1 Disparities. Front Immunol 2016; 7:584. [PMID: 28018351 PMCID: PMC5151176 DOI: 10.3389/fimmu.2016.00584] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 11/25/2016] [Indexed: 11/13/2022] Open
Abstract
HLA-C locus mismatches (MMs) are the most frequent class I disparities in unrelated hematopoietic stem cell transplantation (HSCT) and have a detrimental impact on clinical outcome. Recently, a few retrospective clinical studies have reported some variability in the immunogenicity of HLA-C incompatibilities. To get better insight into presumably permissive HLA-C MMs, we have developed a one-way in vitro mixed lymphocyte reaction (MLR) assay allowing to quantify activated CD56-CD137+CD8+ lymphocytes in HLA-C incompatible combinations. T cell-mediated alloresponses were correlated with genetic markers such as HLA-C mRNA expression and the number of amino acid (aa) MMs in the α1/α2 domains (peptide-binding region). Because of the high rate of HLA-DPB1 incompatibilities in HLA-A-, B-, C-, DRB1-, and DQB1-matched unrelated HSCT patient/donor pairs, the impact of HLA-DPB1 mismatching, a potential bystander of CD4+ T cell activation, was also considered. Heterogeneous alloresponses were measured in 63 HLA-C-mismatched pairs with a positive assay in 52% of the combinations (2.3-18.6% activated CTLs), representing 24 different HLA-A~B~DRB1~DQB1 haplotypes. There was no correlation between measured alloresponses and mRNA expression of the mismatched HLA-C alleles. The HLA-C*03:03/03:04 MM did not induce any positive alloresponse in five MLRs. We also identified HLA-C*02:02 and HLA-C*06:02 as mismatched alleles with lower immunogenicity, and HLA-C*14:02 as a more immunogenic MM. A difference of at least 10 aa residues known to impact peptide/T cell receptor (TCR) binding and a bystander HLA-DPB1 incompatibility had a significant impact on CTL alloreactivity (p = 0.021). The same HLA-C MM, when recognized by two different responders with the same HLA haplotypes, was recognized differently, emphasizing the role of the T-cell repertoire of responding cells. In conclusion, mismatched HLA-C alleles differing by 10 or more aas in the peptide/TCR-binding region, when occurring together with HLA-DPB1 incompatibilities, should be considered as high-risk MMs in unrelated HSCT.
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Affiliation(s)
- Florence Bettens
- National Reference Laboratory for Histocompatibility, Department of Genetic and Laboratory Medicine, University Hospitals Geneva , Geneva , Switzerland
| | - Stéphane Buhler
- National Reference Laboratory for Histocompatibility, Department of Genetic and Laboratory Medicine, University Hospitals Geneva , Geneva , Switzerland
| | - Jean-Marie Tiercy
- National Reference Laboratory for Histocompatibility, Department of Genetic and Laboratory Medicine, University Hospitals Geneva , Geneva , Switzerland
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31
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Pesce S, Moretta L, Moretta A, Marcenaro E. Human NK Cell Subsets Redistribution in Pathological Conditions: A Role for CCR7 Receptor. Front Immunol 2016; 7:414. [PMID: 27774094 PMCID: PMC5053980 DOI: 10.3389/fimmu.2016.00414] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/23/2016] [Indexed: 12/13/2022] Open
Abstract
Innate and adaptive immunity has evolved complex molecular mechanisms regulating immune cell migration to facilitate the dynamic cellular interactions required for its function involving the chemokines and their receptors. One important chemokine receptor in the immune system is represented by CCR7. Together with its ligands CCL19 and CCL21, this chemokine receptor controls different arrays of migratory events, both in innate and adaptive immunity, including homing of CD56bright NK cells, T cells, and DCs to lymphoid compartments, where T cell priming occurs. Only recently, a key role for CCR7 in promoting CD56dim NK cell migration toward lymphoid tissues has been described. Remarkably, this event can influence the shaping and polarization of adaptive T cell responses. In this review, we describe recent progress in understanding the mechanisms and the site where CD56dim KIR+ NK cells can acquire the capability to migrate toward lymph nodes. The emerging significance of this event in clinical transplantation is also discussed.
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Affiliation(s)
- Silvia Pesce
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova , Genova , Italy
| | - Lorenzo Moretta
- Dipartimento di Immunologia, IRCCS Bambino Gesù Ospedale Pediatrico , Rome , Italy
| | - Alessandro Moretta
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy; CEBR, Università degli Studi di Genova, Genova, Italy
| | - Emanuela Marcenaro
- Dipartimento di Medicina Sperimentale, Università degli Studi di Genova, Genova, Italy; CEBR, Università degli Studi di Genova, Genova, Italy
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32
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Schachtner T, Stein M, Reinke P. Kidney transplant recipients after nonrenal solid organ transplantation show low alloreactivity but an increased risk of infection. Transpl Int 2016; 29:1296-1306. [PMID: 27638250 DOI: 10.1111/tri.12856] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 07/29/2016] [Accepted: 09/04/2016] [Indexed: 12/13/2022]
Abstract
The number of kidney transplant recipients (KTRs) after nonrenal solid organ transplantation (SOT) has increased to almost 5%. Knowledge on patient and allograft outcomes, infections, and alloreactivity, however, remains scarce. We studied 40 KTRs after nonrenal SOT. Seven hundred and twenty primary KTRs and 119 repeat KTRs were used for comparison. Samples were collected pretransplantation, at +1, +2, and +3 months post-transplantation. Alloreactive and CMV-specific T cells were measured by interferon-γ ELISPOT assay. Patient survival in KTRs after SOT, primary and repeat KTRs was comparable. While death-censored allograft survival was comparable between KTRs after SOT and primary KTRs, KTRs after SOT showed superior 5-year death-censored allograft survival of 92.5% compared to 81.2% in repeat KTRs. Interestingly, KTRs after SOT show less preformed panel-reactive antibodies, frequencies of alloreactive T cells, and acute rejections compared to repeat KTRs. KTRs after SOT, however, show higher incidences of EBV viremia and PTLD, sepsis, and death from sepsis. Impaired CMV-specific cellular immunity was associated with more CMV replication compared to repeat KTRs. Our results suggest comparable patient and allograft outcomes in KTRs after SOT and primary KTRs. The observed low alloreactivity may contribute to excellent allograft outcomes. Caution should be taken in KTRs after SOT regarding infectious complications due to overimmunosuppression.
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Affiliation(s)
- Thomas Schachtner
- Department of Nephrology and Internal Intensive Care, Charité University Medicine Berlin, Campus Virchow Clinic, Berlin, Germany.,Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany.,Charité and Max-Delbrück Center, Berlin Institute of Health (BIH), Berlin, Germany
| | - Maik Stein
- Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany
| | - Petra Reinke
- Department of Nephrology and Internal Intensive Care, Charité University Medicine Berlin, Campus Virchow Clinic, Berlin, Germany.,Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany
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33
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Waggoner SN, Mavilio D. Editorial: Natural killer cells "strike" a new cord. J Leukoc Biol 2016; 100:449-51. [PMID: 27587377 DOI: 10.1189/jlb.1ce0416-181rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 05/05/2016] [Indexed: 11/24/2022] Open
Affiliation(s)
- Stephen N Waggoner
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Department of Pediatrics, University of Cincinnati Medical School, Cincinnati, Ohio, USA
| | - Domenico Mavilio
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Milan, Italy; and Unit of Clinical and Experimental Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
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34
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Degauque N, Brouard S, Soulillou JP. Cross-Reactivity of TCR Repertoire: Current Concepts, Challenges, and Implication for Allotransplantation. Front Immunol 2016; 7:89. [PMID: 27047489 PMCID: PMC4805583 DOI: 10.3389/fimmu.2016.00089] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 02/22/2016] [Indexed: 01/18/2023] Open
Abstract
Being able to track donor reactive T cells during the course of organ transplantation is a key to improve the graft survival, to prevent graft dysfunction, and to adapt the immunosuppressive regimen. The attempts of transplant immunologists have been for long hampered by the large size of the alloreactive T cell repertoire. Understanding how self-TCR can interact with allogeneic MHC is a key to critically appraise the different assays available to analyze the TCR Vβ repertoire usage. In this report, we will review conceptually and experimentally the process of cross-reactivity. We will then highlight what can be learned from allotransplantation, a situation of artificial cross-reactivity. Finally, the low- and high-resolution techniques to characterize the TCR Vβ repertoire usage in transplantation will be critically discussed.
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Affiliation(s)
- Nicolas Degauque
- UMR 1064, INSERM, Nantes, France; ITUN, CHU de Nantes, Nantes, France; Faculté de Médecine, Université de Nantes, Nantes, France; LabEx IGO "Immunotherapy Graft Oncology", Nantes, France
| | - Sophie Brouard
- UMR 1064, INSERM, Nantes, France; ITUN, CHU de Nantes, Nantes, France; Faculté de Médecine, Université de Nantes, Nantes, France; LabEx IGO "Immunotherapy Graft Oncology", Nantes, France; CIC Biothérapie, Nantes, France; CRB, CHU Nantes, Nantes, France; LabEx Transplantex, Nantes, France
| | - Jean-Paul Soulillou
- UMR 1064, INSERM, Nantes, France; Faculté de Médecine, Université de Nantes, Nantes, France; LabEx Transplantex, Nantes, France
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35
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Thus KA, de Weger RA, de Hoop TA, Boers Trilles VE, Kuball J, Spierings E. Complete donor chimerism is a prerequisite for the effect of Predicted Indirectly ReCognizable HLA Epitopes (PIRCHE) on acute graft-versus-host disease. Chimerism 2015; 5:94-8. [PMID: 26669207 DOI: 10.1080/19381956.2015.1097025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Predicted indirectly recognizable HLA epitopes (PIRCHE) computationally predict donor T-cell recognition of mismatched-HLA derived peptides following allogeneic haematopoietic stem-cell transplantation (allo-HSCT), as is evidenced by the correlation between presence of HLA-DPB1-derived PIRCHE and the occurrence of graft-vs.-host disease (GVHD). Complete donor T-cell chimerism associates with an increased GVHD risk compared to mixed patient and donor chimerism. If the correlation between the presence of PIRCHE and GVHD occurrence is indeed mediated by donor T cells, the presence of donor T cells should be required to observe such a correlation. This study was initiated to investigate whether the effect of PIRCHE is different in patients with complete chimerism compared to those with mixed chimerism. Indeed, the correlation between PIRCHE and GVHD is present in patients with complete chimerism, whereas it is absent in those with mixed chimerism. The data presented here suggest that chimerism status is important for the detection of potential GVHD epitopes.
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Affiliation(s)
- Kirsten A Thus
- a Laboratory of Translational Immunology; University Medical Center Utrecht ; Utrecht , the Netherlands
| | - Roel A de Weger
- b Department of Pathology ; University Medical Center Utrecht ; Utrecht , the Netherlands
| | - Talitha A de Hoop
- a Laboratory of Translational Immunology; University Medical Center Utrecht ; Utrecht , the Netherlands
| | - Valeria E Boers Trilles
- a Laboratory of Translational Immunology; University Medical Center Utrecht ; Utrecht , the Netherlands
| | - Jürgen Kuball
- a Laboratory of Translational Immunology; University Medical Center Utrecht ; Utrecht , the Netherlands.,c Department of Hematology ; University Medical Center Utrecht ; Utrecht , the Netherlands
| | - Eric Spierings
- a Laboratory of Translational Immunology; University Medical Center Utrecht ; Utrecht , the Netherlands
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36
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Ruggeri L, Parisi S, Urbani E, Curti A. Alloreactive Natural Killer Cells for the Treatment of Acute Myeloid Leukemia: From Stem Cell Transplantation to Adoptive Immunotherapy. Front Immunol 2015; 6:479. [PMID: 26528283 PMCID: PMC4606119 DOI: 10.3389/fimmu.2015.00479] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 09/03/2015] [Indexed: 01/11/2023] Open
Abstract
Natural killer (NK) cells express activating and inhibitory receptors, which recognize MHC class-I alleles, termed “Killer cell Immunoglobulin-like Receptors” (KIRs). Preclinical and clinical data from haploidentical T-cell-depleted stem cell transplantation have demonstrated that alloreactive KIR-L mismatched NK cells play a major role as effectors against acute myeloid leukemia (AML). Outside the transplantation setting, several reports have proven the safety and feasibility of NK cell infusion in AML patients and, in some cases, provided evidence that transferred NK cells are functionally alloreactive and may have a role in disease control. The aim of the present work is to briefly summarize the most recent advances in the field by moving from the first preclinical and clinical demonstration of donor NK alloreactivity in the transplantation setting to the most recent attempts at exploiting the use of alloreactive NK cell infusion as a means of adoptive immunotherapy against AML. Altogether, these data highlight the pivotal role of NK cells for the development of novel immunological approaches in the clinical management of AML.
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Affiliation(s)
- Loredana Ruggeri
- Department of Medicine, Division of Hematology and Clinical Immunology, Ospedale Santa Maria della Misericordia, University of Perugia , Perugia , Italy
| | - Sarah Parisi
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", S. Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
| | - Elena Urbani
- Department of Medicine, Division of Hematology and Clinical Immunology, Ospedale Santa Maria della Misericordia, University of Perugia , Perugia , Italy
| | - Antonio Curti
- Department of Experimental, Diagnostic and Specialty Medicine, Institute of Hematology "L. and A. Seràgnoli", S. Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
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37
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Yamada E, Demachi-Okamura A, Kondo S, Akatsuka Y, Suzuki S, Shibata K, Kikkawa F, Kuzushima K. Identification of a naturally processed HLA-Cw7-binding peptide that cross-reacts with HLA-A24-restricted ovarian cancer-specific CTLs. ACTA ACUST UNITED AC 2015. [PMID: 26216489 DOI: 10.1111/tan.12607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Here, we describe an human leukocyte antigen (HLA)-A*24:02-restricted cytotoxic T-lymphocyte (CTL) clone, 1G3, established from naïve CD8(+) T-lymphocytes obtained from a healthy donor stimulated with HLA-modified TOV21G, an ovarian cancer cell line. The 1G3 clone responds not only to ovarian cancer cells in the context of HLA-A*24:02 but also to allogeneic HLA-Cw*07:02 molecules through cross-reactive T-cell receptor recognition. Expression screening using a complementary DNA library constructed from TOV21G messenger RNA revealed that this alloreactivity was mediated through the nine-mer peptide VRTPYTMSY, derived from RNA-binding motif protein 4. To our knowledge, this study presents the first example of the allorecognition of an HLA-Cw molecule by HLA-A-restricted T-cells, thereby revealing a naturally processed epitope peptide. These findings provide the structural bases for the allorecognition of human T-cells. In addition, this study suggests that unexpected alloresponses occur in certain HLA combinations, and further study is needed to understand the mechanisms of alloreactivity for better prediction of alloresponses in clinical settings.
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Affiliation(s)
- E Yamada
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan.,Department of Gynecology, Graduate School of Medicine, Nagoya, Japan
| | - A Demachi-Okamura
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - S Kondo
- Department of Gynecologic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Y Akatsuka
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan.,Department of Hematology & Oncology, Fujita Health University, Toyoake, Japan
| | - S Suzuki
- Department of Gynecology, Graduate School of Medicine, Nagoya, Japan
| | - K Shibata
- Department of Gynecology, Graduate School of Medicine, Nagoya, Japan
| | - F Kikkawa
- Department of Gynecology, Graduate School of Medicine, Nagoya, Japan
| | - K Kuzushima
- Division of Immunology, Aichi Cancer Center Research Institute, Nagoya, Japan.,Department of Cellular Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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38
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Schachtner T, Stein M, Reinke P. ABO desensitization affects cellular immunity and infection control after renal transplantation. Transpl Int 2015; 28:1179-94. [PMID: 26033637 DOI: 10.1111/tri.12616] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/07/2015] [Accepted: 05/27/2015] [Indexed: 02/06/2023]
Abstract
The impact of ABO desensitization on overall immunity, infectious control, and alloreactivity remains unknown. We compared 35 ABO-incompatible kidney transplant recipients (KTRs) to a control of 62 ABO compatible KTRs. Samples were collected before, at +1, +2, +3, +6, and +12 months post-transplantation. CMV-, BKV-specific, and alloreactive T cells were measured using an interferon-γ ELISPOT assay. The extent of immunosuppression was quantified by enumeration of lymphocyte subpopulations and cytokines. No differences were observed for 5-year allograft survival and function between both groups (P > 0.05). However, ABO-incompatible KTRs were more likely to develop CMV infection, BKV-associated nephropathy, and severe sepsis (P = 0.001). Interestingly, ABO-incompatible KTRs with poor HLA-match showed the highest rates of infections and inferior allograft function (P < 0.05). CD3+, CD4+ T-cell counts, interferon-γ and IL-10 levels were lower in ABO-incompatible KTRs early post-transplantation (P < 0.05). Likewise, ABO-incompatible KTRs showed impaired BKV- and CMV-specific T-cell immunity (P < 0.05). ABO-incompatible KTRs showed lower frequencies of alloreactive T cells (P < 0.05). Our data suggest T-cell depletion due to ABO desensitization, which may contribute to the increased risk of T-cell-dependent infections. Elimination of B cells serving as antigen-presenting cells, thereby causing impaired T-cell activation, plays a significant role in both impaired infection control and reduced alloreactive T-cell activation.
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Affiliation(s)
- Thomas Schachtner
- Department of Nephrology and Internal Intensive Care, Charité University Medicine Berlin, Berlin, Germany.,Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany
| | - Maik Stein
- Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany
| | - Petra Reinke
- Department of Nephrology and Internal Intensive Care, Charité University Medicine Berlin, Berlin, Germany.,Berlin-Brandenburg Center of Regenerative Therapies (BCRT), Berlin, Germany
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39
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Abstract
T-cell ontogeny optimizes the α/β T-cell receptor (TCR) repertoire for recognition of major histocompatibility complex (MHC) class-I/II genetic polymorphism, and co-evolution of TCR germline V-gene segments and the MHC must entail somatic diversity generated in the third complimentary determining regions (CDR3α/β); however, it is still not clear how. Herein, a conspicuous structural link between the V-Jα used by several different TCR [all in complex with the same MHC molecule (HLA-A2)], and a conserved MHC motif (a.a., R65-X-X-K-A-X-S-Q72) is described. We model this R65-joint in detail, and show that the same TCR’s CDR3α loop maintains its CDR2α loop at a distance of ~4 Å from polymorphic amino acid (a.a.) positions of the α-2 helix in all but one of the analyzed crystal structures. Indeed, the pitch of docked TCRs varies as their twist/tilt/sway maintains the R65-joint and peptide contacts. Thus, the R65-joint appears to have poised the HLA-A lineage toward alloreactivity.
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Abstract
Much progress has been made toward understanding the mechanistic basis of transplantation tolerance in experimental models, which implicates clonal deletion of alloreactive T and B cells, induction of cell-intrinsic hyporesponsiveness, and dominant regulatory cells mediating infectious tolerance and linked suppression. Despite encouraging success in the laboratory, achieving tolerance in the clinic remains challenging, although the basis for these challenges is beginning to be understood. Heterologous memory alloreactive T cells generated by infections prior to transplantation have been shown to be a critical barrier to tolerance induction. Furthermore, infections at the time of transplantation and tolerance induction provide a pro-inflammatory milieu that alters the stability and function of regulatory T cells as well as the activation requirements and differentiation of effector T cells. Thus, infections can result in enhanced alloreactivity, resistance to tolerance induction, and destabilization of the established tolerance state. We speculate that these experimental findings have relevance to the clinic, where infections have been associated with allograft rejection and may be a causal event precipitating the loss of grafts after long periods of stable operational tolerance. Understanding the mechanisms by which infections prevent and destabilize tolerance can lead to therapies that promote stable life-long tolerance in transplant recipients.
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Affiliation(s)
- Anita S Chong
- Section of Transplantation, Department of Surgery, The University of Chicago, Chicago, IL, USA
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Brissot E, Bossard C, Malard F, Braudeau C, Chevallier P, Guillaume T, Delaunay J, Josien R, Gregoire M, Gaugler B, Mohty M. Involvement of the CX3CL1 (fractalkine)/CX3CR1 pathway in the pathogenesis of acute graft-versus-host disease. J Leukoc Biol 2014; 97:227-35. [PMID: 25420917 DOI: 10.1189/jlb.5hi0714-325r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This study investigated the role of cytokines and chemokines in aGVHD incidence and severity in 109 patients who underwent reduced-intensity conditioning allogeneic stem cell transplantation (HSCT). Among the 42 cytokines tested at d 0 HSCT, only CX3CL1 levels at d 0 HSCT were significantly associated with Grades II-IV aGVHD development (P = 0.04). Increased levels of CX3CL1 at d 20-30 and 50 post-HSCT were also significantly associated with aGVHD (P = 0.02 and P = 0.03, respectively). No such association was found before the conditioning regimen or at d 100-120 post-HSCT. As the receptor for CX3CL1 is CX3CR1, the number of CX3CR1(+) cells was determined by flow cytometry. The CX3CR1(+)CD8(+) T cell proportion was significantly higher in patients with aGVHD than those without aGVHD (P = 0.01). To investigate the distribution of the CX3CL1/CX3CR1 axis in the anatomic sites of aGVHD, CX3CL1 and CX3CR1 levels were studied by use of an in situ immunohistochemical analysis on GI biopsies of patients with intestinal aGVHD. CX3CL1 expression was increased significantly in the epithelial cells and mononuclear cells of the lamina propria. CX3CR1(+) mononuclear cells were identified in close contact with epithelial cells. These findings strongly suggest the implication of the CX3CL1/CX3CR1 axis in the pathogenesis of aGVHD.
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Affiliation(s)
- Eolia Brissot
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Celine Bossard
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Florent Malard
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Cécile Braudeau
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Patrice Chevallier
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Thierry Guillaume
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Jacques Delaunay
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Régis Josien
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Marc Gregoire
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Beatrice Gaugler
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Mohamad Mohty
- *Universite Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 938, Paris, France; Hématologie Clinique, Centre Hospitalier et Universitaire Hotel Dieu, Nantes, France; Le Centre Régional de Recherche en Cancérologie Nantes/Angers, Unité Mixte de Recherche 892 Institut National de la Santé et de la Recherche Médicale-6299 Centre National de la Recherche Scientifique, Nantes, France; EA4273 Biometadys, Faculté de Médecine, Université de Nantes, Nantes, France; Service d'Anatomie et Cytologie Pathologique and Laboratoire d'Immunologie, Plateforme d'Immuno-Monitorage Clinique, Centre Hospitalier et Universitaire de Nantes, France; Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche 1098, Besançon, France; **Université de Franche-Comté, Besançon, France; Etablissement Français du Sang Bourgogne Franche-Comté, Besançon, France; Centre d'Investigation Clinique en Biothérapie CBT506, Plateforme de Biomonitoring, Besançon, France; and Service d'Hématologie Clinique et de Thérapie Cellulaire, Hôpital Saint Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
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42
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Snell GI, Westall GP, Levvey BJ, Jaksch P, Keshavjee S, Hoopes CW, Ahya V, Mehta A, Trulock EP. A randomized, double-blind, placebo-controlled, multicenter study of rabbit ATG in the prophylaxis of acute rejection in lung transplantation. Am J Transplant 2014; 14:1191-8. [PMID: 24618385 DOI: 10.1111/ajt.12663] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 01/07/2014] [Accepted: 01/07/2014] [Indexed: 01/25/2023]
Abstract
ATG-Fresenius S (ATG-F) is a polyclonal anti-human-T-lymphocyte immunoglobulin preparation that has been clinically developed to prevent episodes of acute cellular rejection. This study evaluated the efficacy and safety of ATG-F at doses of 5 and 9 mg/kg versus placebo in adult recipients of a primary lung allograft. The primary efficacy composite end point was defined as death, graft loss, acute rejection and/or loss to follow-up within 12 months of transplantation. The interim analysis showed the ATG-F 5 mg/kg treatment to be inefficacious, and it would be impossible to enroll enough patients to power the study to show a difference between the 9 mg/kg arm and the placebo arm. Therefore, the main focus of the study shifted to the safety end points and a descriptive analysis of the primary end point. At 12 months posttransplant, the efficacy failure rate was not significantly different between the ATG-F 9 mg/kg group and the placebo group (40.2% vs. 36.7%, respectively). This large study did not demonstrate a significant reduction in acute cellular rejection, graft loss or death with single-dose induction therapy with ATG-F within the first year after lung transplantation.
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Affiliation(s)
- G I Snell
- Lung Transplant Service, Department of Allergy, Immunology and Respiratory Medicine, The Alfred Hospital, Melbourne, Australia
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Litjens NHR, de Wit EA, Baan CC, Betjes MGH. Activation-induced CD137 is a fast assay for identification and multi-parameter flow cytometric analysis of alloreactive T cells. Clin Exp Immunol 2013; 174:179-91. [PMID: 23750604 DOI: 10.1111/cei.12152] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2013] [Indexed: 11/28/2022] Open
Abstract
Detection and isolation of viable alloreactive T cells at the single-cell level requires a cell surface marker induced specifically upon T cell receptor activation. In this study, a member of the tumour necrosis factor receptor (TNFR)-family, CD137 (4-1BB) was investigated for its potential to identify the total pool of circulating alloreactive T cells. Optimal conditions for sensitive and specific detection of allogeneic-induced CD137 expression on circulating T cells were established. Thereafter, CD137(+) alloreactive T cells were phenotypically and functionally characterized by multi-parameter flow cytometry. Alloantigen-induced CD137 expression identified both alloreactive CD8(+) T cells (mean ± standard error of the mean: 0·21 ± 0·07%) and alloreactive CD4(+) T cells (0·21 ± 0·05%). CD137(+) alloreactive T cells were detected in different T cell subsets, including naive T cells, but were found preferentially in CD28(+) T cells and not in the terminally differentiated T cell subset. Upon allogeneic (re-)stimulation, the cytokine-producing as well as proliferative capacity of T cells resided mainly within the CD137-expressing fraction. About 10% of the CD137(+) alloreactive T cells produced any combination of interferon (IFN)-γ, interleukin (IL)-2 and TNF-α. Polyfunctional alloreactive T cells, defined by multiple cytokine expression, were observed infrequently. In conclusion, activation-induced CD137 expression is a fast assay allowing for detection and functional analysis of the total alloreactive T cell compartment at the single-cell level by multi-parameter flow cytometry.
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Affiliation(s)
- N H R Litjens
- Department of Internal Medicine, section Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, South-Holland, the Netherlands
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Betts BC, Veerapathran A, Pidala J, Yu XZ, Anasetti C. STAT5 polarization promotes iTregs and suppresses human T-cell alloresponses while preserving CTL capacity. J Leukoc Biol 2013; 95:205-13. [PMID: 24068731 DOI: 10.1189/jlb.0313154] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Alloreactivity negatively influences outcomes of organ transplantation or HCT from allogeneic donors. Standard pharmacologic immune suppression impairs T-cell function and jeopardizes the beneficial reconstitution of Tregs. Murine transplantation models have shown that STAT3 is highly expressed in alloreactive T cells and may be therapeutically targeted. The influence and effects of STAT3 neutralization in human alloreactivity, however, remain to be elucidated. In this study, S3I-201, a selective small-molecule inhibitor of STAT3, suppressed human DC-allosensitized T-cell proliferation and abrogated Th17 responses. STAT3 blockade significantly enhanced the expansion of potent iTregs and permitted CD8(+) cytolytic effector function. Mechanistically, S3I-201 polarized the ratio of STAT phosphorylation in favor of STAT5 over STAT3 and also achieved a significant degree of Foxp3 demethylation among the iTregs. Conversely, selective impairment of STAT5 phosphorylation with CAS 285986-31-4 markedly reduced iTregs. STAT3 represents a relevant target for achieving control over human alloresponses, where its suppression facilitates STAT5-mediated iTreg growth and function.
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Wooldridge L. Individual MHCI-Restricted T-Cell Receptors are Characterized by a Unique Peptide Recognition Signature. Front Immunol 2013; 4:199. [PMID: 23888160 PMCID: PMC3719040 DOI: 10.3389/fimmu.2013.00199] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 07/03/2013] [Indexed: 11/13/2022] Open
Abstract
Effective immunity requires that a limited TCR repertoire is able to recognize a vast number of foreign peptide-MHCI (peptide-major histocompatibility complex class I) molecules. This challenge is overcome by the ability of individual TCRs to recognize large numbers of peptides. Recently, it was demonstrated that MHCI-restricted TCRs can recognize up to 106 peptides of a defined length. Astonishingly, this remarkable level of promiscuity does not extend to peptides of different lengths, a fundamental observation that has broad implications for CD8+ T-cell immunity. In particular, the findings suggest that effective immunity can only be achieved by mobilization of “length-matched” CD8+ T-cell clonotypes. Overall, recent findings suggest that every TCR is specific for a unique set of peptides, which can be described as a unique “peptide recognition signature” (PRS) and consists of three components: (1) peptide length preference, (2) number of peptides recognized; and, (3) sequence identity (e.g., self versus pathogen derived). In future, the ability to de-convolute peptide recognition signatures across the normal and pathogenic repertoire will be essential for understanding the system requirements for effective CD8+ T-cell immunity and elucidating mechanisms which underlie CD8+ T-cell mediated disease.
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Affiliation(s)
- Linda Wooldridge
- Institute of Infection and Immunity, Cardiff University School of Medicine , Heath Park, Cardiff , UK
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Bronk CC, Yu XZ, Beg AA. Targeting PKCθ in alloreactivity and graft-versus-host-disease: unanswered questions and therapeutic potential. Front Immunol 2012; 3:259. [PMID: 22912640 PMCID: PMC3418525 DOI: 10.3389/fimmu.2012.00259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 08/01/2012] [Indexed: 11/30/2022] Open
Abstract
Protein kinase C isoform θ (PKCθ) is a key modulator of TCR signaling and mediates activation of NF-κB, NF-AT, and AP-1 transcription factors. Although in vitro studies of PKCθ-/- T cells have shown impaired activation responses, in vivo studies indicate that PKCθ requirement is not universal. While PKCθ is important in induction of experimentally induced autoimmune diseases in mice and generation of Th2 responses, it is not essential for induction of T cell proliferative and cytotoxic responses against influenza virus, LCMV, and vaccinia virus. The context-specific involvement of PKCθ in T cell responses suggests that inhibition of PKCθ may be beneficial in some but not all situations. In the bone marrow transplantation (BMT) setting, we have shown that graft-versus-host-disease (GVHD) cannot be induced in the absence of PKCθ. However, graft-versus-leukemia effects and T cell ability to clear virus infection remains intact. Therefore, PKCθ is a potential therapeutic target in BMT, inhibition of which may prevent GVHD while retaining anti-tumor and anti-infection responses.
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Abstract
The NIMA paradox is the observation that in transplants of allogeneic kidneys or hematopoietic stem cells, siblings benefit from re-exposure to non-inherited maternal antigens (NIMA), whereas re-exposure to a transplant from mother herself, theoretically the ideal "NIMA" donor, does not yield clinical results superior to a father-donated allograft. Recent observations of bidirectional alloreactivity in kidney and cord blood transplantation offer a possible solution to this paradox. If correct, the proposed solution points the way to clinical applications of microchimerism in solid organ and hematopoetic transplants.
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Maleki Vareki S, Harding M, Waithman J, Zanker D, Shivji A, Rytelewski M, Mazzuca D, Yekta M, Chen W, Schell T, Haeryfar S. Differential regulation of simultaneous antitumor and alloreactive CD8(+) T-cell responses in the same host by rapamycin. Am J Transplant 2012; 12:233-9. [PMID: 22026814 PMCID: PMC3520512 DOI: 10.1111/j.1600-6143.2011.03811.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Rapamycin is an immunosuppressive agent routinely used in organ transplantation but also paradoxically exerts antiviral and antitumor activities. Pathogen-specific memory CD8(+) T-cell (T(CD8) ) responses were recently found to be augmented by rapamycin. However, whether rapamycin influences the magnitude and quality of anticancer T(CD8) responses is unknown. Importantly, how rapamycin may regulate simultaneous virus/tumor-specific and alloreactive T(CD8) in the same host remains unexplored. To answer these questions, we primed wild-type mice with allogeneic cells concomitantly expressing simian virus 40 large tumor antigen (T Ag), a viral oncoprotein with well-defined epitopes. Rapamycin selectively enhanced the cross-priming of T(CD8) specific for T Ag's most immunodominant epitope called site IV but not T(CD8) alloreactivity. Rapamycin-treated mice also had a high percentage of splenic CD127(high) KLRG1(low) T(CD8) and an increased frequency of site IV-specific T cells long after the peak of their primary response. When site IV was presented as a cytosolic minigene encoded by a recombinant vaccinia virus, rapamycin failed to boost the site IV-specific response. Therefore, the nature and presentation mode of antigen determine the susceptibility to the adjuvant effect of rapamycin. Our findings reveal the unexpected benefit of rapamycin treatment in recipients of allografts co-expressing tumor/viral Ags.
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Affiliation(s)
- S. Maleki Vareki
- Department of Microbiology and Immunology, University of Western Ontario, London, Canada
| | - M.J. Harding
- Department of Microbiology and Immunology, University of Western Ontario, London, Canada
| | - J. Waithman
- T Cell Laboratory, Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, Australia
| | - D. Zanker
- T Cell Laboratory, Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, Australia
| | - A.N. Shivji
- Department of Microbiology and Immunology, University of Western Ontario, London, Canada
| | - M. Rytelewski
- Department of Microbiology and Immunology, University of Western Ontario, London, Canada
| | - D.M. Mazzuca
- Department of Microbiology and Immunology, University of Western Ontario, London, Canada
| | - M.A. Yekta
- Department of Microbiology and Immunology, University of Western Ontario, London, Canada
| | - W. Chen
- T Cell Laboratory, Ludwig Institute for Cancer Research, Melbourne-Austin Branch, Heidelberg, Australia
| | - T.D. Schell
- Department of Microbiology and Immunology, Pennsylvania State University, Hershey, Pennsylvania, U.S.A
| | - S.M.M. Haeryfar
- Department of Microbiology and Immunology, University of Western Ontario, London, Canada,Centre for Human Immunology, University of Western Ontario, London, Ontario, Canada,Corresponding author: S.M. Mansour Haeryfar, Department of Microbiology and Immunology, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5C1, Canada. Phone: (519) 850-2488; Fax: (519) 661-3499;
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49
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Simpson AA, Mohammed F, Salim M, Tranter A, Rickinson AB, Stauss HJ, Moss PAH, Steven NM, Willcox BE. Structural and energetic evidence for highly peptide-specific tumor antigen targeting via allo-MHC restriction. Proc Natl Acad Sci U S A 2011; 108:21176-81. [PMID: 22160697 PMCID: PMC3248497 DOI: 10.1073/pnas.1108422109] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Immunotherapies targeting peptides presented by allogeneic MHC molecules offer the prospect of circumventing tolerance to key tumor-associated self-antigens. However, the degree of antigen specificity mediated by alloreactive T cells, and their ability to discriminate normal tissues from transformed cells presenting elevated antigen levels, is poorly understood. We examined allorecognition of an HLA-A2-restricted Hodgkin's lymphoma-associated antigen and were able to isolate functionally antigen-specific allo-HLA-A2-restricted T cells from multiple donors. Binding and structural studies, focused on a prototypic allo-HLA-A2-restricted T-cell receptor (TCR) termed NB20 derived from an HLA-A3 homozygote, suggested highly peptide-specific allorecognition that was energetically focused on antigen, involving direct recognition of a distinct allopeptide presented within a conserved MHC recognition surface. Although NB20/HLA-A2 affinity was unremarkable, TCR/MHC complexes were very short-lived, consistent with suboptimal TCR triggering and tolerance to low antigen levels. These data provide strong molecular evidence that within the functionally heterogeneous alloreactive repertoire, there is the potential for highly antigen-specific "allo-MHC-restricted" recognition and suggest a kinetic mechanism whereby allo-MHC-restricted T cells may discriminate normal from transformed tissue, thereby outlining a suitable basis for broad-based therapeutic targeting of tolerizing tumor antigens.
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Affiliation(s)
- Amy A. Simpson
- Birmingham Cancer Research UK Cancer Centre, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; and
| | - Fiyaz Mohammed
- Birmingham Cancer Research UK Cancer Centre, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; and
| | - Mahboob Salim
- Birmingham Cancer Research UK Cancer Centre, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; and
| | - Amy Tranter
- Birmingham Cancer Research UK Cancer Centre, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; and
| | - Alan B. Rickinson
- Birmingham Cancer Research UK Cancer Centre, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; and
| | - Hans J. Stauss
- Division of Infection and Immunity, Department of Immunology, University College London, Royal Free Hospital, London NW3 2PF, United Kingdom
| | - Paul A. H. Moss
- Birmingham Cancer Research UK Cancer Centre, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; and
| | - Neil M. Steven
- Birmingham Cancer Research UK Cancer Centre, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; and
| | - Benjamin E. Willcox
- Birmingham Cancer Research UK Cancer Centre, School of Cancer Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; and
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50
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Abstract
This essay provides an analysis of the inadequacy of the current view of restrictive recognition of peptide by the T-cell antigen receptor. A competing model is developed, and the experimental evidence for the prevailing model is reinterpreted in the new framework. The goal is to contrast the two models with respect to their consistency, coverage of the data, explanatory power, and predictability.
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Affiliation(s)
- Melvin Cohn
- Conceptual Immunology Group, The Salk Institute For Biological Studies, La Jolla, CA 92037, USA.
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