1
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Yang K, Zhang Y, Ding J, Li Z, Zhang H, Zou F. Autoimmune CD8+ T cells in type 1 diabetes: from single-cell RNA sequencing to T-cell receptor redirection. Front Endocrinol (Lausanne) 2024; 15:1377322. [PMID: 38800484 PMCID: PMC11116783 DOI: 10.3389/fendo.2024.1377322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 04/18/2024] [Indexed: 05/29/2024] Open
Abstract
Type 1 diabetes (T1D) is an organ-specific autoimmune disease caused by pancreatic β cell destruction and mediated primarily by autoreactive CD8+ T cells. It has been shown that only a small number of stem cell-like β cell-specific CD8+ T cells are needed to convert normal mice into T1D mice; thus, it is likely that T1D can be cured or significantly improved by modulating or altering self-reactive CD8+ T cells. However, stem cell-type, effector and exhausted CD8+ T cells play intricate and important roles in T1D. The highly diverse T-cell receptors (TCRs) also make precise and stable targeted therapy more difficult. Therefore, this review will investigate the mechanisms of autoimmune CD8+ T cells and TCRs in T1D, as well as the related single-cell RNA sequencing (ScRNA-Seq), CRISPR/Cas9, chimeric antigen receptor T-cell (CAR-T) and T-cell receptor-gene engineered T cells (TCR-T), for a detailed and clear overview. This review highlights that targeting CD8+ T cells and their TCRs may be a potential strategy for predicting or treating T1D.
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Affiliation(s)
- Kangping Yang
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yihan Zhang
- The Second Clinical Medicine School, Nanchang University, Nanchang, China
| | - Jiatong Ding
- The Second Clinical Medicine School, Nanchang University, Nanchang, China
| | - Zelin Li
- The First Clinical Medicine School, Nanchang University, Nanchang, China
| | - Hejin Zhang
- The Second Clinical Medicine School, Nanchang University, Nanchang, China
| | - Fang Zou
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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2
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Santamaria JC, Vuillier S, Galindo-Albarrán AO, Castan S, Detraves C, Joffre OP, Romagnoli P, van Meerwijk JPM. The type 1 diabetes susceptibility locus Idd5 favours robust neonatal development of highly autoreactive regulatory T cells in the NOD mouse. Front Immunol 2024; 15:1358459. [PMID: 38404576 PMCID: PMC10884962 DOI: 10.3389/fimmu.2024.1358459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 01/18/2024] [Indexed: 02/27/2024] Open
Abstract
Regulatory T lymphocytes expressing the transcription factor Foxp3 (Tregs) play an important role in the prevention of autoimmune diseases and other immunopathologies. Aberrations in Treg-mediated immunosuppression are therefore thought to be involved in the development of autoimmune pathologies, but few have been documented. Recent reports indicated a central role for Tregs developing during the neonatal period in the prevention of autoimmune pathology. We therefore investigated the development of Tregs in neonatal NOD mice, an important animal model for autoimmune type 1 diabetes. Surprisingly, we found that, as compared with seven other commonly studied inbred mouse strains, in neonatal NOD mice, exceptionally large proportions of developing Tregs express high levels of GITR and PD-1. The latter phenotype was previously associated with high Treg autoreactivity in C57BL/6 mice, which we here confirm for NOD animals. The proportions of newly developing GITRhighPD-1+ Tregs rapidly drop during the first week of age. A genome-wide genetic screen indicated the involvement of several diabetes susceptibility loci in this trait. Analysis of a congenic mouse strain confirmed that Idd5 contributes to the genetic control of GITRhighPD-1+ Treg development in neonates. Our data thus demonstrate an intriguing and paradoxical correlation between an idiosyncrasy in Treg development in NOD mice and their susceptibility to type 1 diabetes.
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Affiliation(s)
| | | | | | | | | | | | | | - Joost P. M. van Meerwijk
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Institut National de la santé et de la recherche médicale (Inserm) UMR1291 – Centre national de la recherche scientifique (CNRS) UMR5051 – University Toulouse III, Toulouse, France
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3
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Graham AL, Schrom EC, Metcalf CJE. The evolution of powerful yet perilous immune systems. Trends Immunol 2021; 43:117-131. [PMID: 34949534 PMCID: PMC8686020 DOI: 10.1016/j.it.2021.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/03/2021] [Accepted: 12/05/2021] [Indexed: 12/23/2022]
Abstract
The mammalian immune system packs serious punch against infection but can also cause harm: for example, coronavirus disease 2019 (COVID-19) made headline news of the simultaneous power and peril of human immune responses. In principle, natural selection leads to exquisite adaptation and therefore cytokine responsiveness that optimally balances the benefits of defense against its costs (e.g., immunopathology suffered and resources expended). Here, we illustrate how evolutionary biology can predict such optima and also help to explain when/why individuals exhibit apparently maladaptive immunopathological responses. Ultimately, we argue that the evolutionary legacies of multicellularity and life-history strategy, in addition to our coevolution with symbionts and our demographic history, together explain human susceptibility to overzealous, pathology-inducing cytokine responses. Evolutionary insight thereby complements molecular/cellular mechanistic insights into immunopathology.
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4
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Galindo-Albarrán A, Castan S, Santamaria JC, Joffre OP, Haegeman B, Romagnoli P, van Meerwijk JPM. The Repertoire of Newly Developing Regulatory T Cells in the Type 1 Diabetes-Prone NOD Mouse Is Very Diverse. Diabetes 2021; 70:1729-1737. [PMID: 34035042 DOI: 10.2337/db20-1072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 05/17/2021] [Indexed: 11/13/2022]
Abstract
Regulatory T lymphocytes expressing the forkhead/winged helix transcription factor Foxp3 (Treg) play a vital role in the protection of the organism from autoimmune disease and other immunopathologies. The antigen specificity of Treg plays an important role in their in vivo activity. We therefore assessed the diversity of the T-cell receptors (TCRs) for antigen expressed by Treg newly developed in the thymus of autoimmune type 1 diabetes-prone NOD mice and compared it to the control mouse strain C57BL/6. Our results demonstrate that use of the TCRα and TCRβ variable (V) and joining (J) segments, length of the complementarity determining region (CDR) 3, and the diversity of the TCRα and TCRβ chains are comparable between NOD and C57BL/6 mice. Genetic defects affecting the diversity of the TCR expressed by newly developed Treg therefore do not appear to be involved in the etiology of type 1 diabetes in the NOD mouse.
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MESH Headings
- Animals
- Diabetes Mellitus, Type 1/genetics
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/pathology
- Mice
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, Transgenic
- Receptors, Antigen, T-Cell/genetics
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/pathology
- Thymus Gland/immunology
- Thymus Gland/pathology
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Affiliation(s)
- Ariel Galindo-Albarrán
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291-CNRS UMR5051-Université Paul Sabatier (UPS), Toulouse, France
- Station d'Écologie Théorique et Expérimentale, CNRS-Université Paul Sabatier (UPS), Moulis, France
| | - Sarah Castan
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291-CNRS UMR5051-Université Paul Sabatier (UPS), Toulouse, France
| | - Jérémy C Santamaria
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291-CNRS UMR5051-Université Paul Sabatier (UPS), Toulouse, France
| | - Olivier P Joffre
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291-CNRS UMR5051-Université Paul Sabatier (UPS), Toulouse, France
| | - Bart Haegeman
- Station d'Écologie Théorique et Expérimentale, CNRS-Université Paul Sabatier (UPS), Moulis, France
| | - Paola Romagnoli
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291-CNRS UMR5051-Université Paul Sabatier (UPS), Toulouse, France
| | - Joost P M van Meerwijk
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291-CNRS UMR5051-Université Paul Sabatier (UPS), Toulouse, France
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5
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Singh Y, Trautwein C, Fendel R, Krickeberg N, Berezhnoy G, Bissinger R, Ossowski S, Salker MS, Casadei N, Riess O. SARS-CoV-2 infection paralyzes cytotoxic and metabolic functions of the immune cells. Heliyon 2021; 7:e07147. [PMID: 34075347 PMCID: PMC8159709 DOI: 10.1016/j.heliyon.2021.e07147] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 03/10/2021] [Accepted: 05/24/2021] [Indexed: 12/29/2022] Open
Abstract
The SARS-CoV-2 virus is the causative agent of the global COVID-19 infectious disease outbreak, which can lead to acute respiratory distress syndrome (ARDS). However, it is still unclear how the virus interferes with immune cell and metabolic functions in the human body. In this study, we investigated the immune response in acute or convalescent COVID-19 patients. We characterized the peripheral blood mononuclear cells (PBMCs) using flow cytometry and found that CD8+ T cells were significantly subsided in moderate COVID-19 and convalescent patients. Furthermore, characterization of CD8+ T cells suggested that convalescent patients have significantly diminished expression of both perforin and granzyme A. Using 1H-NMR spectroscopy, we characterized the metabolic status of their autologous PBMCs. We found that fructose, lactate and taurine levels were elevated in infected (mild and moderate) patients compared with control and convalescent patients. Glucose, glutamate, formate and acetate levels were attenuated in COVID-19 (mild and moderate) patients. In summary, our report suggests that SARS-CoV-2 infection leads to disrupted CD8+ T cytotoxic functions and changes the overall metabolic functions of immune cells.
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Affiliation(s)
- Yogesh Singh
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
- NGS Competence Center Tübingen (NCCT), University of Tübingen, Calwerstrasse 7, 72076 Tübingen, Germany
- Research Institute of Women’s Health, University of Tübingen, Calwerstrasse 7/6, 72076, Tübingen, Germany
| | - Christoph Trautwein
- Werner Siemens Imaging Center, University of Tübingen, Röntgenweg 13, 72076, Tübingen, Germany
| | - Rolf Fendel
- Institute of Tropical Medicine, University Hospital of Tübingen, Wilhelmstrasse 27, 72076, Tübingen, Germany
| | - Naomi Krickeberg
- Institute of Tropical Medicine, University Hospital of Tübingen, Wilhelmstrasse 27, 72076, Tübingen, Germany
| | - Georgy Berezhnoy
- Werner Siemens Imaging Center, University of Tübingen, Röntgenweg 13, 72076, Tübingen, Germany
| | - Rosi Bissinger
- Department of Internal Medicine, Division of Endocrinology, Diabetology and Nephrology, University Hospital of Tübingen, Germany
| | - Stephan Ossowski
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
- NGS Competence Center Tübingen (NCCT), University of Tübingen, Calwerstrasse 7, 72076 Tübingen, Germany
| | - Madhuri S. Salker
- Research Institute of Women’s Health, University of Tübingen, Calwerstrasse 7/6, 72076, Tübingen, Germany
| | - Nicolas Casadei
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
- NGS Competence Center Tübingen (NCCT), University of Tübingen, Calwerstrasse 7, 72076 Tübingen, Germany
| | - Olaf Riess
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany
- NGS Competence Center Tübingen (NCCT), University of Tübingen, Calwerstrasse 7, 72076 Tübingen, Germany
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6
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Tregs self-organize into a computing ecosystem and implement a sophisticated optimization algorithm for mediating immune response. Proc Natl Acad Sci U S A 2021; 118:2011709118. [PMID: 33372155 DOI: 10.1073/pnas.2011709118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Regulatory T cells (Tregs) play a crucial role in mediating immune response. Yet an algorithmic understanding of the role of Tregs in adaptive immunity remains lacking. Here, we present a biophysically realistic model of Treg-mediated self-tolerance in which Tregs bind to self-antigens and locally inhibit the proliferation of nearby activated T cells. By exploiting a duality between ecological dynamics and constrained optimization, we show that Tregs tile the potential antigen space while simultaneously minimizing the overlap between Treg activation profiles. We find that for sufficiently high Treg diversity, Treg-mediated self-tolerance is robust to fluctuations in self-antigen concentrations but lowering the Treg diversity results in a sharp transition-related to the Gardner transition in perceptrons-to a regime where changes in self-antigen concentrations can result in an autoimmune response. We propose an experimental test of this transition in immune-deficient mice and discuss potential implications for autoimmune diseases.
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7
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Mhanna V, Fourcade G, Barennes P, Quiniou V, Pham HP, Ritvo PG, Brimaud F, Gouritin B, Churlaud G, Six A, Mariotti-Ferrandiz E, Klatzmann D. Impaired Activated/Memory Regulatory T Cell Clonal Expansion Instigates Diabetes in NOD Mice. Diabetes 2021; 70:976-985. [PMID: 33479057 DOI: 10.2337/db20-0896] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 01/19/2021] [Indexed: 11/13/2022]
Abstract
Regulatory T cell (Treg) insufficiency licenses the destruction of insulin-producing pancreatic β-cells by autoreactive effector T cells (Teffs), causing spontaneous autoimmune diabetes in NOD mice. We investigated the contribution to diabetes of the T-cell receptor (TCR) repertoires of naive regulatory T cells (nTregs), activated/memory Tregs (amTregs), and CD4+ Teffs from prediabetic NOD mice and normal C57BL/6 (B6) mice. NOD mice amTreg and Teff repertoire diversity was unexpectedly higher than that of B6 mice. This was due to the presence of highly expanded clonotypes in B6 amTregs and Teffs that were largely lost in their NOD counterparts. Interleukin-2 (IL-2) administration to NOD mice restored such amTreg clonotype expansions and prevented diabetes development. In contrast, IL-2 administration only led to few or no clonotype expansions in nTregs and Teffs, respectively. Noteworthily, IL-2-expanded amTreg and nTreg clonotypes were markedly enriched in islet-antigen specific TCRs. Altogether, our results highlight the link between a reduced clonotype expansion within the activated Treg repertoire and the development of an autoimmune disease. They also indicate that the repertoire of amTregs is amenable to rejuvenation by IL-2.
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Affiliation(s)
- Vanessa Mhanna
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - Gwladys Fourcade
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - Pierre Barennes
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - Valentin Quiniou
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
- Clinical Investigation Center in Biotherapy and Inflammation-Immunopathology-Biotherapy Department, Assistance Publique-Hôpitaux de Paris, Hôpital Universitaire Pitié-Salpêtrière, Paris, France
| | - Hang P Pham
- Statistics Department, ILTOO Pharma, Paris, France
| | - Paul-Gydeon Ritvo
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - Faustine Brimaud
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - Bruno Gouritin
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - Guillaume Churlaud
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
- Clinical Investigation Center in Biotherapy and Inflammation-Immunopathology-Biotherapy Department, Assistance Publique-Hôpitaux de Paris, Hôpital Universitaire Pitié-Salpêtrière, Paris, France
| | - Adrien Six
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | | | - David Klatzmann
- Sorbonne Universite, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
- Clinical Investigation Center in Biotherapy and Inflammation-Immunopathology-Biotherapy Department, Assistance Publique-Hôpitaux de Paris, Hôpital Universitaire Pitié-Salpêtrière, Paris, France
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8
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Ivy-Israel NMD, Moore CE, Schwartz TS, Steury TD, Zohdy S, Newbolt CH, Ditchkoff SS. Association between sexually selected traits and allelic distance in two unlinked MHC II loci in white-tailed deer (Odocoileus virginianus). Evol Ecol 2021. [DOI: 10.1007/s10682-021-10108-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Clark M, Kroger CJ, Ke Q, Tisch RM. The Role of T Cell Receptor Signaling in the Development of Type 1 Diabetes. Front Immunol 2021; 11:615371. [PMID: 33603744 PMCID: PMC7884625 DOI: 10.3389/fimmu.2020.615371] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 12/15/2020] [Indexed: 12/15/2022] Open
Abstract
T cell receptor (TCR) signaling influences multiple aspects of CD4+ and CD8+ T cell immunobiology including thymic development, peripheral homeostasis, effector subset differentiation/function, and memory formation. Additional T cell signaling cues triggered by co-stimulatory molecules and cytokines also affect TCR signaling duration, as well as accessory pathways that further shape a T cell response. Type 1 diabetes (T1D) is a T cell-driven autoimmune disease targeting the insulin producing β cells in the pancreas. Evidence indicates that dysregulated TCR signaling events in T1D impact the efficacy of central and peripheral tolerance-inducing mechanisms. In this review, we will discuss how the strength and nature of TCR signaling events influence the development of self-reactive T cells and drive the progression of T1D through effects on T cell gene expression, lineage commitment, and maintenance of pathogenic anti-self T cell effector function.
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Affiliation(s)
- Matthew Clark
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Charles J Kroger
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Qi Ke
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Roland M Tisch
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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10
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Liu Y, Wang X, Zhu Y, Zhang M, Nasri U, Sun SS, Forman SJ, Riggs AD, Zhang X, Zeng D. Haploidentical mixed chimerism cures autoimmunity in established type 1 diabetic mice. J Clin Invest 2020; 130:6457-6476. [PMID: 32817590 DOI: 10.1172/jci131799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 08/13/2020] [Indexed: 12/21/2022] Open
Abstract
Clinical trials are currently testing whether induction of haploidentical mixed chimerism (Haplo-MC) induces organ transplantation tolerance. Whether Haplo-MC can be used to treat established autoimmune diseases remains unknown. Here, we show that established autoimmunity in euthymic and adult-thymectomized NOD (H-2g7) mice was cured by induction of Haplo-MC under a non-myeloablative anti-thymocyte globulin-based conditioning regimen and infusion of CD4+ T cell-depleted hematopoietic graft from H-2b/g7 F1 donors that expressed autoimmune-resistant H-2b or from H-2s/g7 F1 donors that expressed autoimmune-susceptible H-2s. The cure was associated with enhanced thymic negative selection, increased thymic Treg (tTreg) production, and anergy or exhaustion of residual host-type autoreactive T cells in the periphery. The peripheral tolerance was accompanied by expansion of donor- and host-type CD62L-Helios+ tTregs as well as host-type Helios-Nrp1+ peripheral Tregs (pTregs) and PD-L1hi plasmacytoid DCs (pDCs). Depletion of donor- or host-type Tregs led to reduction of host-type PD-L1hi pDCs and recurrence of autoimmunity, whereas PD-L1 deficiency in host-type DCs led to reduction of host-type pDCs and Helios-Nrp1+ pTregs. Thus, induction of Haplo-MC reestablished both central and peripheral tolerance through mechanisms that depend on allo-MHC+ donor-type DCs, PD-L1hi host-type DCs, and the generation and persistence of donor- and host-type tTregs and pTregs.
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Affiliation(s)
- Yuqing Liu
- Diabetes and Metabolism Research Institute, and.,Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute of City of Hope, Duarte, California, USA.,Medical Center of Hematology, Xinqiao Hospital of Army Medical University, Chongqing, China
| | - Xiaoqi Wang
- Diabetes and Metabolism Research Institute, and.,Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute of City of Hope, Duarte, California, USA.,Medical Center of Hematology, Xinqiao Hospital of Army Medical University, Chongqing, China
| | - Yongping Zhu
- Diabetes and Metabolism Research Institute, and.,Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute of City of Hope, Duarte, California, USA.,Department of Cardiovascular Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Mingfeng Zhang
- Diabetes and Metabolism Research Institute, and.,Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Ubaydah Nasri
- Diabetes and Metabolism Research Institute, and.,Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute of City of Hope, Duarte, California, USA
| | - Sharne S Sun
- Eugene and Ruth Roberts Summer Student Academy of City of Hope, Duarte, California, USA
| | - Stephen J Forman
- Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute of City of Hope, Duarte, California, USA
| | | | - Xi Zhang
- Medical Center of Hematology, Xinqiao Hospital of Army Medical University, Chongqing, China
| | - Defu Zeng
- Diabetes and Metabolism Research Institute, and.,Hematologic Malignancies and Stem Cell Transplantation Institute, Beckman Research Institute of City of Hope, Duarte, California, USA
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11
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Darrigues J, Santamaria JC, Galindo-Albarrán A, Robey EA, Joffre OP, van Meerwijk JPM, Romagnoli P. Robust intrathymic development of regulatory T cells in young NOD mice is rapidly restrained by recirculating cells. Eur J Immunol 2020; 51:580-593. [PMID: 32730634 DOI: 10.1002/eji.202048743] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/03/2020] [Accepted: 07/28/2020] [Indexed: 12/11/2022]
Abstract
Regulatory T lymphocytes (Treg) play a vital role in the protection of the organism against autoimmune pathology. It is therefore paradoxical that comparatively large numbers of Treg were found in the thymus of type I diabetes-prone NOD mice. The Treg population in the thymus is composed of newly developing cells and cells that had recirculated from the periphery back to the thymus. We here demonstrate that exceptionally large numbers of Treg develop in the thymus of young, but not adult, NOD mice. Once emigrated from the thymus, an unusually large proportion of these Treg is activated in the periphery, which causes a particularly abundant accumulation of recirculating Treg in the thymus. These cells then rapidly inhibit de novo development of Treg. The proportions of developing Treg thus reach levels similar to or lower than those found in most other, type 1 diabetes-resistant, inbred mouse strains. Thus, in adult NOD mice the particularly large Treg-niche is actually composed of mostly recirculating cells and only few newly developing Treg.
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Affiliation(s)
- Julie Darrigues
- Centre de Physiopathologie Toulouse Purpan (CPTP), Inserm U1043, CNRS UMR 5282, Université de Toulouse III (UPS), Toulouse, France
| | - Jeremy C Santamaria
- Centre de Physiopathologie Toulouse Purpan (CPTP), Inserm U1043, CNRS UMR 5282, Université de Toulouse III (UPS), Toulouse, France
| | - Ariel Galindo-Albarrán
- Centre de Physiopathologie Toulouse Purpan (CPTP), Inserm U1043, CNRS UMR 5282, Université de Toulouse III (UPS), Toulouse, France.,Station d'Ecologie Théorique et Expérimentale, CNRS, Moulis, France, Université Paul Sabatier, Moulis, France
| | - Ellen A Robey
- Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, CA
| | - Olivier P Joffre
- Centre de Physiopathologie Toulouse Purpan (CPTP), Inserm U1043, CNRS UMR 5282, Université de Toulouse III (UPS), Toulouse, France
| | - Joost P M van Meerwijk
- Centre de Physiopathologie Toulouse Purpan (CPTP), Inserm U1043, CNRS UMR 5282, Université de Toulouse III (UPS), Toulouse, France
| | - Paola Romagnoli
- Centre de Physiopathologie Toulouse Purpan (CPTP), Inserm U1043, CNRS UMR 5282, Université de Toulouse III (UPS), Toulouse, France
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12
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Martinov T, Fife BT. Type 1 diabetes pathogenesis and the role of inhibitory receptors in islet tolerance. Ann N Y Acad Sci 2020; 1461:73-103. [PMID: 31025378 PMCID: PMC6994200 DOI: 10.1111/nyas.14106] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/25/2019] [Accepted: 04/03/2019] [Indexed: 12/15/2022]
Abstract
Type 1 diabetes (T1D) affects over a million Americans, and disease incidence is on the rise. Despite decades of research, there is still no cure for this disease. Exciting beta cell replacement strategies are being developed, but in order for such approaches to work, targeted immunotherapies must be designed. To selectively halt the autoimmune response, researchers must first understand how this response is regulated and which tolerance checkpoints fail during T1D development. Herein, we discuss the current understanding of T1D pathogenesis in humans, genetic and environmental risk factors, presumed roles of CD4+ and CD8+ T cells as well as B cells, and implicated autoantigens. We also highlight studies in non-obese diabetic mice that have demonstrated the requirement for CD4+ and CD8+ T cells and B cells in driving T1D pathology. We present an overview of central and peripheral tolerance mechanisms and comment on existing controversies in the field regarding central tolerance. Finally, we discuss T cell- and B cell-intrinsic tolerance mechanisms, with an emphasis on the roles of inhibitory receptors in maintaining islet tolerance in humans and in diabetes-prone mice, and strategies employed to date to harness inhibitory receptor signaling to prevent or reverse T1D.
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Affiliation(s)
- Tijana Martinov
- Department of Medicine, Center for Immunology, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Brian T Fife
- Department of Medicine, Center for Immunology, University of Minnesota Medical School, Minneapolis, Minnesota
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13
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Thomas R, Wang W, Su DM. Contributions of Age-Related Thymic Involution to Immunosenescence and Inflammaging. IMMUNITY & AGEING 2020; 17:2. [PMID: 31988649 PMCID: PMC6971920 DOI: 10.1186/s12979-020-0173-8] [Citation(s) in RCA: 199] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 01/02/2020] [Indexed: 01/10/2023]
Abstract
Immune system aging is characterized by the paradox of immunosenescence (insufficiency) and inflammaging (over-reaction), which incorporate two sides of the same coin, resulting in immune disorder. Immunosenescence refers to disruption in the structural architecture of immune organs and dysfunction in immune responses, resulting from both aged innate and adaptive immunity. Inflammaging, described as a chronic, sterile, systemic inflammatory condition associated with advanced age, is mainly attributed to somatic cellular senescence-associated secretory phenotype (SASP) and age-related autoimmune predisposition. However, the inability to reduce senescent somatic cells (SSCs), because of immunosenescence, exacerbates inflammaging. Age-related adaptive immune system deviations, particularly altered T cell function, are derived from age-related thymic atrophy or involution, a hallmark of thymic aging. Recently, there have been major developments in understanding how age-related thymic involution contributes to inflammaging and immunosenescence at the cellular and molecular levels, including genetic and epigenetic regulation, as well as developments of many potential rejuvenation strategies. Herein, we discuss the research progress uncovering how age-related thymic involution contributes to immunosenescence and inflammaging, as well as their intersection. We also describe how T cell adaptive immunity mediates inflammaging and plays a crucial role in the progression of age-related neurological and cardiovascular diseases, as well as cancer. We then briefly outline the underlying cellular and molecular mechanisms of age-related thymic involution, and finally summarize potential rejuvenation strategies to restore aged thymic function.
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Affiliation(s)
- Rachel Thomas
- Cell Biology, Immunology, and Microbiology Graduate Program, Graduate School of Biomedical Sciences, Fort Worth, Texas 76107 USA
| | - Weikan Wang
- Cell Biology, Immunology, and Microbiology Graduate Program, Graduate School of Biomedical Sciences, Fort Worth, Texas 76107 USA
| | - Dong-Ming Su
- 2Department of Microbiology, Immunology, and Genetics, University of North Texas Health Science Center, Fort Worth, Texas 76107 USA
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14
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High Thymic Output of Effector CD4 + Cells May Lead to a Treg : T Effector Imbalance in the Periphery in NOD Mice. J Immunol Res 2019; 2019:8785263. [PMID: 31281853 PMCID: PMC6594269 DOI: 10.1155/2019/8785263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 05/16/2019] [Indexed: 12/30/2022] Open
Abstract
Regulatory T cells (Tregs) play a critical role in controlling autoreactive T cells, and quantitative and/or qualitative deficiencies in Tregs are associated with autoimmune diseases, including type 1 diabetes (T1D), in both humans and mice. Both the incidence of T1D and percentages of peripheral Tregs in NOD mice vary considerably between animal facilities. In our animal facility, the incidence of T1D in NOD mice is high at 90-100% and the percentages of peripheral CD4+Foxp3+ cells in ~9-10-week-old female NOD mice are decreased compared to control (B6) mice shortly before high glucose is first detected (~12 weeks). These data suggest that there is an imbalance between Tregs and potentially pathogenic effector T cells at this age that could have significant impact on disease progression to overt diabetes. The goal of the current study was to investigate mechanisms that play a role in peripheral Treg : T effector cell balance in NOD mice, including differences in persistence/survival, peripheral homeostatic proliferation, and thymic production and output of CD4+ T cells. We found no differences in persistence/survival or homeostatic proliferation of either Tregs or effector T cells between NOD and B6 mice. Furthermore, although the percentages and absolute numbers of CD4+Foxp3+ cells in thymus were not decreased in NOD compared to B6 mice, the percentage of CD4+ recent thymic emigrants (RTE) that were Foxp3+ was significantly lower in 9-week-old NOD mice. Interestingly, the thymic output of CD4+Foxp3+ cells was not lower in NOD mice, whereas the thymic output of CD4+Foxp3− cells was significantly higher in NOD mice at that age compared to B6 mice. These data suggest that the higher thymic output of CD4+Foxp3− T cells contributes, at least in part, to the lower percentages of peripheral CD4+Foxp3+ Tregs in NOD mice and an imbalance between Tregs and T effector cells that may contribute to the development of full-blown diabetes.
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15
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Werner L, Nunberg MY, Rechavi E, Lev A, Braun T, Haberman Y, Lahad A, Shteyer E, Schvimer M, Somech R, Weiss B, Lee YN, Shouval DS. Altered T cell receptor beta repertoire patterns in pediatric ulcerative colitis. Clin Exp Immunol 2019; 196:1-11. [PMID: 30556140 DOI: 10.1111/cei.13247] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2018] [Indexed: 01/06/2023] Open
Abstract
The antigenic specificity of T cells occurs via generation and rearrangement of different gene segments producing a functional T cell receptor (TCR). High-throughput sequencing (HTS) allows in-depth assessment of TCR repertoire patterns. There are limited data concerning whether TCR repertoires are altered in inflammatory bowel disease. We hypothesized that pediatric ulcerative colitis (UC) patients possess unique TCR repertoires, resulting from clonotypical expansions in the gut. Paired blood and rectal samples were collected from nine newly diagnosed treatment-naive pediatric UC patients and four healthy controls. DNA was isolated to determine the TCR-β repertoire by HTS. Significant clonal expansion was demonstrated in UC patients, with inverse correlation between clinical disease severity and repertoire diversity in the gut. Using different repertoire variables in rectal biopsies, a clear segregation was observed between patients with severe UC, those with mild-moderate disease and healthy controls. Moreover, the overlap between autologous blood-rectal samples in UC patients was significantly higher compared with overlap among controls. Finally, we identified several clonotypes that were shared in either all or the majority of UC patients in the colon. Clonal expansion of TCR-β-expressing T cells among UC patients correlates with disease severity and highlights their involvement in mediating intestinal inflammation.
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Affiliation(s)
- L Werner
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Y Nunberg
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - E Rechavi
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Pediatric Department A, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Immunology Service, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Jeffrey Modell Foundation Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| | - A Lev
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Pediatric Department A, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Immunology Service, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Jeffrey Modell Foundation Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| | - T Braun
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Y Haberman
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - A Lahad
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - E Shteyer
- Juliet Keidan Institute of Pediatric Gastroenterology, Hepatology and Nutrition, Shaare Zedek Medical Center and The Hebrew University of Jerusalem, Jerusalem, Israel
| | - M Schvimer
- Institute of Pathology, Sheba Medical Center, Tel Hashomer, Israel
| | - R Somech
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Pediatric Department A, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Immunology Service, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Jeffrey Modell Foundation Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| | - B Weiss
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Y N Lee
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Pediatric Department A, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Immunology Service, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Jeffrey Modell Foundation Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| | - D S Shouval
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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16
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Pinto AI, Smith J, Kissack MR, Hogg KG, Green EA. Thymic B Cell-Mediated Attack of Thymic Stroma Precedes Type 1 Diabetes Development. Front Immunol 2018; 9:1281. [PMID: 29930554 PMCID: PMC5999731 DOI: 10.3389/fimmu.2018.01281] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/22/2018] [Indexed: 01/11/2023] Open
Abstract
Type 1 diabetes (T1D) results from a coordinated autoimmune attack of insulin producing beta cells in the pancreas by the innate and adaptive immune systems, beta cell death being predominantly T cell-mediated. In addition to T cells, peripheral B cells are important in T1D progression. The thymus of mice and man also contains B cells, and lately they have been linked to central tolerance of T cells. The role of thymic B cells in T1D is undefined. Here, we show there are abnormalities in the thymic B cell compartment before beta cell destruction and T1D manifestation. Using non-obese diabetic (NOD) mice, we document that preceding T1D development, there is significant accumulation of thymic B cells-partly through in situ development- and the putative formation of ectopic germinal centers. In addition, in NOD mice we quantify thymic plasma cells and observe in situ binding of immunoglobulins to undefined antigens on a proportion of medullary thymic epithelial cells (mTECs). By contrast, no ectopic germinal centers or pronounced intrathymic autoantibodies are detectable in animals not genetically predisposed to developing T1D. Binding of autoantibodies to thymic stroma correlates with apoptosis of mTECs, including insulin-expressing cells. By contrast, apoptosis of mTECs was decreased by 50% in B cell-deficient NOD mice suggesting intrathymic autoantibodies may selectively target certain mTECs for destruction. Furthermore, we observe that these thymic B cell-associated events correlated with an increased prevalence of premature thymic emigration of T cells. Together, our data suggest that the thymus may be a principal autoimmune target in T1D and contributes to disease progression.
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Affiliation(s)
- Ana Isabel Pinto
- Centre for Immunology and Infection, Department of Biology, Hull York Medical School, University of York, York, United Kingdom
| | - Jennifer Smith
- Cambridge Institute for Medical Research, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Miriam R Kissack
- Centre for Immunology and Infection, Department of Biology, Hull York Medical School, University of York, York, United Kingdom
| | - Karen G Hogg
- Centre for Immunology and Infection, Department of Biology, Hull York Medical School, University of York, York, United Kingdom
| | - E Allison Green
- Centre for Immunology and Infection, Department of Biology, Hull York Medical School, University of York, York, United Kingdom.,Cambridge Institute for Medical Research, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom
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17
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Rowe JH, Delmonte OM, Keles S, Stadinski BD, Dobbs AK, Henderson LA, Yamazaki Y, Allende LM, Bonilla FA, Gonzalez-Granado LI, Celikbilek Celik S, Guner SN, Kapakli H, Yee C, Pai SY, Huseby ES, Reisli I, Regueiro JR, Notarangelo LD. Patients with CD3G mutations reveal a role for human CD3γ in T reg diversity and suppressive function. Blood 2018; 131:2335-2344. [PMID: 29653965 PMCID: PMC5969384 DOI: 10.1182/blood-2018-02-835561] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 04/09/2018] [Indexed: 02/05/2023] Open
Abstract
Integrity of the T-cell receptor/CD3 complex is crucial for positive and negative selection of T cells in the thymus and for effector and regulatory functions of peripheral T lymphocytes. In humans, CD3D, CD3E, and CD3Z gene defects are a cause of severe immune deficiency and present early in life with increased susceptibility to infections. By contrast, CD3G mutations lead to milder phenotypes, mainly characterized by autoimmunity. However, the role of CD3γ in establishing and maintaining immune tolerance has not been elucidated. In this manuscript, we aimed to investigate abnormalities of T-cell repertoire and function in patients with genetic defects in CD3G associated with autoimmunity. High throughput sequencing was used to study composition and diversity of the T-cell receptor β (TRB) repertoire in regulatory T cells (Tregs), conventional CD4+ (Tconv), and CD8+ T cells from 6 patients with CD3G mutations and healthy controls. Treg function was assessed by studying its ability to suppress proliferation of Tconv cells. Treg cells of patients with CD3G defects had reduced diversity, increased clonality, and reduced suppressive function. The TRB repertoire of Tconv cells from patients with CD3G deficiency was enriched for hydrophobic amino acids at positions 6 and 7 of the CDR3, a biomarker of self-reactivity. These data demonstrate that the T-cell repertoire of patients with CD3G mutations is characterized by a molecular signature that may contribute to the increased rate of autoimmunity associated with this condition.
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Affiliation(s)
- Jared H Rowe
- Division of Hematology-Oncology, Boston Children's Hospital, Boston, MA
| | - Ottavia M Delmonte
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Sevgi Keles
- Division of Pediatric Immunology and Allergy, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Brian D Stadinski
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA
| | - Adam K Dobbs
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | | | - Yasuhiro Yamazaki
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | | | | | - Luis I Gonzalez-Granado
- Primary Immunodeficiencies Unit, Department of Pediatrics, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Seyma Celikbilek Celik
- Division of Pediatric Immunology and Allergy, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Sukru N Guner
- Division of Pediatric Immunology and Allergy, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Hasan Kapakli
- Division of Pediatric Immunology and Allergy, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Christina Yee
- Division of Immunology, Boston Children's Hospital, Boston, MA
| | - Sung-Yun Pai
- Division of Hematology-Oncology, Boston Children's Hospital, Boston, MA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA; and
| | - Eric S Huseby
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA
| | - Ismail Reisli
- Division of Pediatric Immunology and Allergy, Meram Medical Faculty, Necmettin Erbakan University, Konya, Turkey
| | - Jose R Regueiro
- Department of Immunology, Complutense University School of Medicine, imas12 Research Institute, Madrid, Spain
| | - Luigi D Notarangelo
- Laboratory of Clinical Immunology and Microbiology, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
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18
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Clark M, Kroger CJ, Tisch RM. Type 1 Diabetes: A Chronic Anti-Self-Inflammatory Response. Front Immunol 2017; 8:1898. [PMID: 29312356 PMCID: PMC5743904 DOI: 10.3389/fimmu.2017.01898] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 12/12/2017] [Indexed: 12/16/2022] Open
Abstract
Inflammation is typically induced in response to a microbial infection. The release of proinflammatory cytokines enhances the stimulatory capacity of antigen-presenting cells, as well as recruits adaptive and innate immune effectors to the site of infection. Once the microbe is cleared, inflammation is resolved by various mechanisms to avoid unnecessary tissue damage. Autoimmunity arises when aberrant immune responses target self-tissues causing inflammation. In type 1 diabetes (T1D), T cells attack the insulin producing β cells in the pancreatic islets. Genetic and environmental factors increase T1D risk by in part altering central and peripheral tolerance inducing events. This results in the development and expansion of β cell-specific effector T cells (Teff) which mediate islet inflammation. Unlike protective immunity where inflammation is terminated, autoimmunity is sustained by chronic inflammation. In this review, we will highlight the key events which initiate and sustain T cell-driven pancreatic islet inflammation in nonobese diabetic mice and in human T1D. Specifically, we will discuss: (i) dysregulation of thymic selection events, (ii) the role of intrinsic and extrinsic factors that enhance the expansion and pathogenicity of Teff, (iii) defects which impair homeostasis and suppressor activity of FoxP3-expressing regulatory T cells, and (iv) properties of β cells which contribute to islet inflammation.
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Affiliation(s)
- Matthew Clark
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Charles J Kroger
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Roland M Tisch
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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19
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Gomez-Tourino I, Kamra Y, Baptista R, Lorenc A, Peakman M. T cell receptor β-chains display abnormal shortening and repertoire sharing in type 1 diabetes. Nat Commun 2017; 8:1792. [PMID: 29176645 PMCID: PMC5702608 DOI: 10.1038/s41467-017-01925-2] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 10/25/2017] [Indexed: 01/10/2023] Open
Abstract
Defects in T cell receptor (TCR) repertoire are proposed to predispose to autoimmunity. Here we show, by analyzing >2 × 108TCRB sequences of circulating naive, central memory, regulatory and stem cell-like memory CD4+ T cell subsets from patients with type 1 diabetes and healthy donors, that patients have shorter TCRB complementarity-determining region 3s (CDR3), in all cell subsets, introduced by increased deletions/reduced insertions during VDJ rearrangement. High frequency of short CDR3s is also observed in unproductive TCRB sequences, which are not subjected to thymic culling, suggesting that the shorter CDR3s arise independently of positive/negative selection. Moreover, TCRB CDR3 clonotypes expressed by autoantigen-specific CD4+ T cells are shorter compared with anti-viral T cells, and with those from healthy donors. Thus, early events in thymic T cell development and repertoire generation are abnormal in type 1 diabetes, which suggest that short CDR3s increase the potential for self-recognition, conferring heightened risk of autoimmune disease. T cell receptors are generated by somatic gene recombination, and are normally selected against autoreactivity. Here the authors show that CD4 T cells from patients with autoimmune type 1 diabetes have shorter TCRβ sequences, broader repertoire diversity, and more repertoire sharing than those from healthy individuals.
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Affiliation(s)
- Iria Gomez-Tourino
- Department of Immunobiology, Faculty of Life Sciences & Medicine, King's College London, 2nd Floor, Borough Wing, Guy's Hospital, London, SE1 9RT, UK.,National Institute for Health Research, Biomedical Research Centre at Guy's and St Thomas' Hospital Foundation Trust and King's College London, Guy's Hospital, London, SE1 9RT, UK.,Immunology Laboratory, Biomedical Research Center (CINBIO), Centro Singular de Investigación de Galicia, University of Vigo, Campus Universitario de Vigo, Pontevedra, 36310, Spain
| | - Yogesh Kamra
- Department of Immunobiology, Faculty of Life Sciences & Medicine, King's College London, 2nd Floor, Borough Wing, Guy's Hospital, London, SE1 9RT, UK
| | - Roman Baptista
- Department of Immunobiology, Faculty of Life Sciences & Medicine, King's College London, 2nd Floor, Borough Wing, Guy's Hospital, London, SE1 9RT, UK.,National Institute for Health Research, Biomedical Research Centre at Guy's and St Thomas' Hospital Foundation Trust and King's College London, Guy's Hospital, London, SE1 9RT, UK
| | - Anna Lorenc
- Department of Immunobiology, Faculty of Life Sciences & Medicine, King's College London, 2nd Floor, Borough Wing, Guy's Hospital, London, SE1 9RT, UK
| | - Mark Peakman
- Department of Immunobiology, Faculty of Life Sciences & Medicine, King's College London, 2nd Floor, Borough Wing, Guy's Hospital, London, SE1 9RT, UK. .,National Institute for Health Research, Biomedical Research Centre at Guy's and St Thomas' Hospital Foundation Trust and King's College London, Guy's Hospital, London, SE1 9RT, UK.
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20
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Henderson LA, Volpi S, Frugoni F, Janssen E, Kim S, Sundel RP, Dedeoglu F, Lo MS, Hazen MM, Beth Son M, Mathieu R, Zurakowski D, Yu N, Lebedeva T, Fuhlbrigge RC, Walter JE, Nee Lee Y, Nigrovic PA, Notarangelo LD. Next-Generation Sequencing Reveals Restriction and Clonotypic Expansion of Treg Cells in Juvenile Idiopathic Arthritis. Arthritis Rheumatol 2017; 68:1758-68. [PMID: 26815131 DOI: 10.1002/art.39606] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 01/19/2016] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Treg cell-mediated suppression of Teff cells is impaired in juvenile idiopathic arthritis (JIA); however, the basis for this dysfunction is incompletely understood. Animal models of autoimmunity and immunodeficiency demonstrate that a diverse Treg cell repertoire is essential to maintain Treg cell function. The present study was undertaken to investigate the Treg and Teff cell repertoires in JIA. METHODS Treg cells (CD4+CD25+CD127(low) ) and Teff cells (CD4+CD25-) were isolated from peripheral blood and synovial fluid obtained from JIA patients, healthy controls, and children with Lyme arthritis. Treg cell function was measured in suppressive assays. The T cell receptor β chain (TRB) was amplified by multiplex polymerase chain reaction and next-generation sequencing was performed, with amplicons sequenced using an Illumina HiSeq platform. Data were analyzed using ImmunoSEQ, International ImMunoGeneTics system, and the Immunoglobulin Analysis Tools. RESULTS Compared to findings in controls, the JIA peripheral blood Treg cell repertoire was restricted, and clonotypic expansions were found in both blood and synovial fluid Treg cells. Skewed usage and pairing of TRB variable and joining genes, including overuse of gene segments that have been associated with other autoimmune conditions, was observed. JIA patients shared a substantial portion of synovial fluid Treg cell clonotypes that were private to JIA and not identified in Lyme arthritis. CONCLUSION We identified restriction and clonotypic expansions in the JIA Treg cell repertoire with sharing of Treg cell clonotypes across patients. These findings suggest that abnormalities in the Treg cell repertoire, possibly engendered by shared antigenic triggers, may contribute to disease pathogenesis in JIA.
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Affiliation(s)
| | | | | | - Erin Janssen
- Boston Children's Hospital, Boston, Massachusetts
| | - Susan Kim
- Boston Children's Hospital, Boston, Massachusetts
| | | | | | - Mindy S Lo
- Boston Children's Hospital, Boston, Massachusetts
| | | | | | | | | | - Neng Yu
- American Red Cross Blood Services-East Division, New England HLA Services, Dedham, Massachusetts
| | - Tatiana Lebedeva
- American Red Cross Blood Services-East Division, New England HLA Services, Dedham, Massachusetts
| | - Robert C Fuhlbrigge
- Boston Children's Hospital and Brigham and Women's Hospital, Boston, Massachusetts
| | - Jolan E Walter
- Boston Children's Hospital and Massachusetts General Hospital for Children, Boston, Massachusetts
| | - Yu Nee Lee
- Boston Children's Hospital, Boston, Massachusetts
| | - Peter A Nigrovic
- Boston Children's Hospital and Brigham and Women's Hospital, Boston, Massachusetts
| | - Luigi D Notarangelo
- Boston Children's Hospital, Harvard Medical School, and Harvard Stem Cell Institute, Boston, Massachusetts
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21
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Laydon DJ, Bangham CRM, Asquith B. Estimating T-cell repertoire diversity: limitations of classical estimators and a new approach. Philos Trans R Soc Lond B Biol Sci 2015; 370:20140291. [PMID: 26150657 PMCID: PMC4528489 DOI: 10.1098/rstb.2014.0291] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2015] [Indexed: 12/26/2022] Open
Abstract
A highly diverse T-cell receptor (TCR) repertoire is a fundamental property of an effective immune system, and is associated with efficient control of viral infections and other pathogens. However, direct measurement of total TCR diversity is impossible. The diversity is high and the frequency distribution of individual TCRs is heavily skewed; the diversity therefore cannot be captured in a blood sample. Consequently, estimators of the total number of TCR clonotypes that are present in the individual, in addition to those observed, are essential. This is analogous to the 'unseen species problem' in ecology. We review the diversity (species richness) estimators that have been applied to T-cell repertoires and the methods used to validate these estimators. We show that existing approaches have significant shortcomings, and frequently underestimate true TCR diversity. We highlight our recently developed estimator, DivE, which can accurately estimate diversity across a range of immunological and biological systems.
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MESH Headings
- Animals
- Gene Rearrangement, T-Lymphocyte
- Genetic Variation
- Host-Pathogen Interactions/genetics
- Host-Pathogen Interactions/immunology
- Humans
- Lymphocyte Count
- Models, Genetic
- Models, Immunological
- Receptors, Antigen, T-Cell/chemistry
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/immunology
- Statistics, Nonparametric
- T-Lymphocytes/immunology
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Affiliation(s)
- Daniel J Laydon
- Section of Immunology, Wright-Fleming Institute, Imperial College School of Medicine, London W2 1PG, UK
| | - Charles R M Bangham
- Section of Immunology, Wright-Fleming Institute, Imperial College School of Medicine, London W2 1PG, UK
| | - Becca Asquith
- Section of Immunology, Wright-Fleming Institute, Imperial College School of Medicine, London W2 1PG, UK
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Lieberman SM, Kreiger PA, Koretzky GA. Reversible lacrimal gland-protective regulatory T-cell dysfunction underlies male-specific autoimmune dacryoadenitis in the non-obese diabetic mouse model of Sjögren syndrome. Immunology 2015; 145:232-41. [PMID: 25581706 PMCID: PMC4427388 DOI: 10.1111/imm.12439] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 12/16/2014] [Accepted: 01/04/2015] [Indexed: 12/30/2022] Open
Abstract
CD4(+) CD25(+) Foxp3(+) regulatory T (Treg) cells are required to maintain immunological tolerance; however, defects in specific organ-protective Treg cell functions have not been demonstrated in organ-specific autoimmunity. Non-obese diabetic (NOD) mice spontaneously develop lacrimal and salivary gland autoimmunity and are a well-characterized model of Sjögren syndrome. Lacrimal gland disease in NOD mice is male-specific, but the role of Treg cells in this sex-specificity is not known. This study aimed to determine if male-specific autoimmune dacryoadenitis in the NOD mouse model of Sjögren syndrome is the result of lacrimal gland-protective Treg cell dysfunction. An adoptive transfer model of Sjögren syndrome was developed by transferring cells from the lacrimal gland-draining cervical lymph nodes of NOD mice to lymphocyte-deficient NOD-SCID mice. Transfer of bulk cervical lymph node cells modelled the male-specific dacryoadenitis that spontaneously develops in NOD mice. Female to female transfers resulted in dacryoadenitis if the CD4(+) CD25(+) Treg-enriched population was depleted before transfer; however, male to male transfers resulted in comparable dacryoadenitis regardless of the presence or absence of Treg cells within the donor cell population. Hormone manipulation studies suggested that this Treg cell dysfunction was mediated at least in part by androgens. Surprisingly, male Treg cells were capable of preventing the transfer of dacryoadenitis to female recipients. These data suggest that male-specific factors promote reversible dysfunction of lacrimal gland-protective Treg cells and, to our knowledge, form the first evidence for reversible organ-protective Treg cell dysfunction in organ-specific autoimmunity.
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Affiliation(s)
- Scott M Lieberman
- Stead Family Department of Pediatrics, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
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23
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Kern J, Drutel R, Leanhart S, Bogacz M, Pacholczyk R. Reduction of T cell receptor diversity in NOD mice prevents development of type 1 diabetes but not Sjögren's syndrome. PLoS One 2014; 9:e112467. [PMID: 25379761 PMCID: PMC4224485 DOI: 10.1371/journal.pone.0112467] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 10/09/2014] [Indexed: 12/23/2022] Open
Abstract
Non-obese diabetic (NOD) mice are well-established models of independently developing spontaneous autoimmune diseases, Sjögren’s syndrome (SS) and type 1 diabetes (T1D). The key determining factor for T1D is the strong association with particular MHCII molecule and recognition by diabetogenic T cell receptor (TCR) of an insulin peptide presented in the context of I-Ag7 molecule. For SS the association with MHCII polymorphism is weaker and TCR diversity involved in the onset of the autoimmune phase of SS remains poorly understood. To compare the impact of TCR diversity reduction on the development of both diseases we generated two lines of TCR transgenic NOD mice. One line expresses transgenic TCRβ chain originated from a pathogenically irrelevant TCR, and the second line additionally expresses transgenic TCRαmini locus. Analysis of TCR sequences on NOD background reveals lower TCR diversity on Treg cells not only in the thymus, but also in the periphery. This reduction in diversity does not affect conventional CD4+ T cells, as compared to the TCRmini repertoire on B6 background. Interestingly, neither transgenic TCRβ nor TCRmini mice develop diabetes, which we show is due to lack of insulin B:9–23 specific T cells in the periphery. Conversely SS develops in both lines, with full glandular infiltration, production of autoantibodies and hyposalivation. It shows that SS development is not as sensitive to limited availability of TCR specificities as T1D, which suggests wider range of possible TCR/peptide/MHC interactions driving autoimmunity in SS.
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MESH Headings
- Amino Acid Sequence
- Animals
- Autoantibodies/immunology
- CD4-Positive T-Lymphocytes/immunology
- CD4-Positive T-Lymphocytes/metabolism
- Diabetes Mellitus, Type 1/genetics
- Diabetes Mellitus, Type 1/immunology
- Flow Cytometry
- Genetic Variation/immunology
- Insulin/genetics
- Insulin/immunology
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, Knockout
- Mice, Transgenic
- Molecular Sequence Data
- Peptide Fragments/genetics
- Peptide Fragments/immunology
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- Salivary Glands/immunology
- Salivary Glands/metabolism
- Sjogren's Syndrome/genetics
- Sjogren's Syndrome/immunology
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Xerostomia/immunology
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Affiliation(s)
- Joanna Kern
- Center for Biotechnology and Genomic Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Robert Drutel
- Center for Biotechnology and Genomic Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Silvia Leanhart
- Center for Biotechnology and Genomic Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Marek Bogacz
- Center for Biotechnology and Genomic Medicine, Georgia Regents University, Augusta, Georgia, United States of America
| | - Rafal Pacholczyk
- Center for Biotechnology and Genomic Medicine, Georgia Regents University, Augusta, Georgia, United States of America
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24
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Single-cell mass cytometry of TCR signaling: amplification of small initial differences results in low ERK activation in NOD mice. Proc Natl Acad Sci U S A 2014; 111:16466-71. [PMID: 25362052 DOI: 10.1073/pnas.1419337111] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Signaling from the T-cell receptor (TCR) conditions T-cell differentiation and activation, requiring exquisite sensitivity and discrimination. Using mass cytometry, a high-dimensional technique that can probe multiple signaling nodes at the single-cell level, we interrogate TCR signaling dynamics in control C57BL/6 and autoimmunity-prone nonobese diabetic (NOD) mice, which show ineffective ERK activation after TCR triggering. By quantitating signals at multiple steps along the signaling cascade and parsing the phosphorylation level of each node as a function of its predecessors, we show that a small impairment in initial pCD3ζ activation resonates farther down the signaling cascade and results in larger defects in activation of the ERK1/2-S6 and IκBα modules. This nonlinear property of TCR signaling networks, which magnifies small initial differences during signal propagation, also applies in cells from B6 mice activated at different levels of intensity. Impairment in pCD3ζ and pSLP76 is not a feedback consequence of a primary deficiency in ERK activation because no proximal signaling defect was observed in Erk2 KO T cells. These defects, which were manifest at all stages of T-cell differentiation from early thymic pre-T cells to memory T cells, may condition the imbalanced immunoregulation and tolerance in NOD T cells. More generally, this amplification of small initial differences in signal intensity may explain how T cells discriminate between closely related ligands and adopt strongly delineated cell fates.
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25
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Morel PA, Faeder JR, Hawse WF, Miskov-Zivanov N. Modeling the T cell immune response: a fascinating challenge. J Pharmacokinet Pharmacodyn 2014; 41:401-13. [PMID: 25155903 PMCID: PMC4210366 DOI: 10.1007/s10928-014-9376-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 08/13/2014] [Indexed: 12/11/2022]
Abstract
The immune system is designed to protect the organism from infection and to repair damaged tissue. An effective response requires recognition of the threat, the appropriate effector mechanism to clear the pathogen and a return to homeostasis with minimal damage to self-tissues. T cells play a central role in orchestrating the immune response at all stages of the response and have been the subject of intense study by both experimental immunologists and modelers. This review examines some of the more critical questions in T cell biology and describes the latest attempts to address those questions using approaches that combine mathematical modeling and experiments.
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Affiliation(s)
- Penelope A Morel
- Departments of Immunology, University of Pittsburgh, 200 Lothrop Street, BST E1055, Pittsburgh, PA, 15261, USA,
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26
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Guindani M, Sepúlveda N, Paulino CD, Müller P. A Bayesian Semi-parametric Approach for the Differential Analysis of Sequence Counts Data. J R Stat Soc Ser C Appl Stat 2014; 63:385-404. [PMID: 24833809 PMCID: PMC4017673 DOI: 10.1111/rssc.12041] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Data obtained using modern sequencing technologies are often summarized by recording the frequencies of observed sequences. Examples include the analysis of T cell counts in immunological research and studies of gene expression based on counts of RNA fragments. In both cases the items being counted are sequences, of proteins and base pairs, respectively. The resulting sequence-abundance distribution is usually characterized by overdispersion. We propose a Bayesian semi-parametric approach to implement inference for such data. Besides modeling the overdispersion, the approach takes also into account two related sources of bias that are usually associated with sequence counts data: some sequence types may not be recorded during the experiment and the total count may differ from one experiment to another. We illustrate our methodology with two data sets, one regarding the analysis of CD4+ T cell counts in healthy and diabetic mice and another data set concerning the comparison of mRNA fragments recorded in a Serial Analysis of Gene Expression (SAGE) experiment with gastrointestinal tissue of healthy and cancer patients.
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Affiliation(s)
- Michele Guindani
- Department of Biostatistics, U.T. M.D. Anderson Cancer Center, Houston, TX, USA
| | - Nuno Sepúlveda
- London School of Hygiene and Tropical Medicine, United Kingdom and Centre of Statistics and Applications of University of Lisbon, Portugal
| | - Carlos Daniel Paulino
- Departamento de Matemática, Instituto Superior Técnico, Portugal and Centre of Statistics and Applications of University of Lisbon, Portugal Portugal
| | - Peter Müller
- Department of Mathematics, University of Texas at Austin, Austin, TX, USA
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27
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Ferreira C, Palmer D, Blake K, Garden OA, Dyson J. Reduced regulatory T cell diversity in NOD mice is linked to early events in the thymus. THE JOURNAL OF IMMUNOLOGY 2014; 192:4145-52. [PMID: 24663675 DOI: 10.4049/jimmunol.1301600] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The thymic natural regulatory T cell (Treg) compartment of NOD mice is unusual in having reduced TCR diversity despite normal cellularity. In this study, we show that this phenotype is attributable to perturbations in early and late stages of thymocyte development and is controlled, at least in part, by the NOD Idd9 region on chromosome 4. Progression from double negative 1 to double negative 2 stage thymocytes in NOD mice is inefficient; however, this defect is compensated by increased proliferation of natural Tregs (nTregs) within the single positive CD4 thymocyte compartment, accounting for recovery of cellularity accompanied by loss of TCR diversity. This region also underlies the known attenuation of ERK-MAPK signaling, which may preferentially disadvantage nTreg selection. Interestingly, the same genetic region also regulates the rate of thymic involution that is accelerated in NOD mice. These findings highlight further complexity in the control of nTreg repertoire diversity.
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Affiliation(s)
- Cristina Ferreira
- Department of Medicine, Imperial College London, London W12 0NN, United Kingdom
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28
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Tellier J, Andrianjaka A, Vicente R, Thiault N, Enault G, Garchon HJ, van Meerwijk JPM, Romagnoli P. Increased thymic development of regulatory T cells in NOD mice is functionally dissociated from type I diabetes susceptibility. Eur J Immunol 2013; 43:1356-62. [DOI: 10.1002/eji.201243142] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 01/07/2013] [Accepted: 02/05/2013] [Indexed: 11/06/2022]
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CTLA-4 controls the thymic development of both conventional and regulatory T cells through modulation of the TCR repertoire. Proc Natl Acad Sci U S A 2012; 110:E221-30. [PMID: 23267099 DOI: 10.1073/pnas.1208573110] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Cytotoxic T lymphocyte-associated antigen-4 (CTLA-4; CD152) is of pivotal importance for self-tolerance, with deficiency or unfavorable polymorphisms leading to autoimmune disease. Tolerance to self-antigens is achieved through thymic deletion of highly autoreactive conventional T (Tconv) cells and generation of FoxP3(+) regulatory T (Treg) cells. The main costimulatory molecule, CD28, augments the negative selection of Tconv cells and promotes the generation of FoxP3(+) Treg cells. The role of its antagonistic homolog CTLA-4, however, remains a topic of debate. To address this topic, we investigated the thymic development of T cells in the presence and absence of CTLA-4 in a T-cell receptor (TCR) transgenic mouse model specific for the myelin basic protein peptide Ac1-9. We reveal that CTLA-4 is expressed in the corticomedullary region of the thymus. Its absence alters the response of CD4(+)CD8(-) thymocytes to self-antigen recognition, which affects the quantity of the Treg cells generated and broadens the repertoire of peripheral Tconv cells. T-cell repertoire alteration after deletion of CTLA-4 results from changes in TCR Vα and Jα segment selection as well as CDR3α composition in Tconv and Treg cells. CTLA-4, therefore, regulates the early development of self-reactive T cells in the thymus and plays a key role in central tolerance.
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30
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Abstract
The bias of αβ T cells for MHC ligands has been proposed to be intrinsic to the T-cell receptor (TCR). Equally, the CD4 and CD8 coreceptors contribute to ligand restriction by colocalizing Lck with the TCR when MHC ligands are engaged. To determine the importance of intrinsic ligand bias, the germ-line TCR complementarity determining regions were extensively diversified in vivo. We show that engagement with MHC ligands during thymocyte selection and peripheral T-cell activation imposes remarkably little constraint over TCR structure. Such versatility is more consistent with an opportunist, rather than a predetermined, mode of interface formation. This hypothesis was experimentally confirmed by expressing a hybrid TCR containing TCR-γ chain germ-line complementarity determining regions, which engaged efficiently with MHC ligands.
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31
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T cell populations in the pancreatic lymph node naturally and consistently expand and contract in NOD mice as disease progresses. Mol Immunol 2012; 52:9-18. [PMID: 22580347 DOI: 10.1016/j.molimm.2012.04.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2012] [Revised: 04/10/2012] [Accepted: 04/16/2012] [Indexed: 11/21/2022]
Abstract
Nonobese diabetic (NOD) mice develop spontaneous autoimmune Type 1 diabetes (T1D) that results from the destruction of insulin secreting β cells by diabetogenic T cells. The activation of autoreactive T cells occurs in the pancreatic lymph nodes (PLN) from where effector T cells migrate to the pancreas. This study was designed to explore whether T cell populations in the NOD PLN expand in a predictable and reproducible way during disease progression. Complementary determining region (CDR) 3 length spectratype analysis of 19 TCR Vβ families was used to identify the relative frequency of T populations in PLN of 4 and 10 week old NOD mice and mice at T1D onset. Significant and highly reproducible changes in specific T cell populations were detected in 14 of Vβ families tested at all stages of disease. However, of these, the CDR3 spectratype of only four Vβ families was significantly more perturbed at T1D onset than in 10 week old mice. Intriguingly, when diabetes was induced in 10 week old mice with cyclophosphamide (CYP) the same four Vβ families, Vβ5.1, Vβ9, Vβ10, and Vβ15, were again significantly more perturbed than in the untreated non-diabetic age matched mice. Taken together the data show that while T cell responses in PLN of NOD mice are heterogeneous, they are ordered and consistent throughout disease development. The finding that within this heterogeneous response four Vβ families are significantly more perturbed in diabetic mice, whether spontaneous or induced, strongly suggests their selection as part of the disease process.
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32
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Mingueneau M, Jiang W, Feuerer M, Mathis D, Benoist C. Thymic negative selection is functional in NOD mice. ACTA ACUST UNITED AC 2012; 209:623-37. [PMID: 22329992 PMCID: PMC3302233 DOI: 10.1084/jem.20112593] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Based on analyses of multiple TCR transgenic (tg) models, the emergence of pathogenic T cells in diabetes-prone NOD mice has been ascribed to a failure to censure autoreactive clones in the thymus. In contrast, using isolated and preselected thymocytes, we show that nonobese diabetic (NOD) genetic variation impairs neither clonal deletion nor downstream transcriptional programs. However, we find that NOD genetic variation influences αβ/γδ-lineage decisions promoted by early expression of tg αβ-TCRs at the double-negative (DN) stage. In B6 and other genetic backgrounds, tg αβ-TCRs behave like γδ-TCRs and commit a large fraction of DNs toward the γδ-lineage, thereby decreasing the size of the double-positive (DP) pool, which is efficiently positively and negatively selected. In NOD DNs, αβ-TCR signalosomes instead behave like pre-TCRs, resulting in high numbers of DPs competing for limited selection niches, and poor positive and negative selection. Once niche effects are neutralized in mixed bone marrow chimeras, positive and negative selection are equally efficient on B6 and NOD backgrounds. Biochemical analysis revealed a selective defect in the activation of Erk1/2 downstream of NOD αβ-TCR signalosomes. Therefore, NOD genetic variation influences αβ/γδ-lineage decisions when the αβ-TCR heterodimer is prematurely expressed, but not the process of negative selection.
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Affiliation(s)
- Michael Mingueneau
- Division of Immunology, Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115, USA
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33
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Abstract
Historically, sharing T cell receptors (TCRs) between individuals has been speculated to be impossible, considering the dramatic discrepancy between the potential enormity of the TCR repertoire and the limited number of T cells generated in each individual. However, public T cell response, in which multiple individuals share identical TCRs in responding to a same antigenic epitope, has been extensively observed in a variety of immune responses across many species. Public T cell responses enable individuals within a population to generate similar antigen-specific TCRs against certain ubiquitous pathogens, leading to favorable biological outcomes. However, the relatively concentrated feature of TCR repertoire may limit T cell response in a population to some other pathogens. It could be a great benefit for human health if public T cell responses can be manipulated. Therefore, the mechanistic insight of public TCR generation is important to know. Recently, high-throughput DNA sequencing has revolutionized the study of immune receptor repertoires, which allows a much better understanding of the factors that determine the overlap of TCR repertoire among individuals. Here, we summarize the current knowledge on public T-cell response and discuss future challenges in this field.
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Affiliation(s)
- Hanjie Li
- State Key Laboratory of Cellular Stress Biology and School of Life Sciences, Xiamen University, Xiamen, Fujian, China
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34
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Wing JB, Sakaguchi S. TCR diversity and Treg cells, sometimes more is more. Eur J Immunol 2011; 41:3097-100. [DOI: 10.1002/eji.201142115] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Accepted: 09/26/2011] [Indexed: 01/06/2023]
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35
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Föhse L, Suffner J, Suhre K, Wahl B, Lindner C, Lee CW, Schmitz S, Haas JD, Lamprecht S, Koenecke C, Bleich A, Hämmerling GJ, Malissen B, Suerbaum S, Förster R, Prinz I. High TCR diversity ensures optimal function and homeostasis of Foxp3+ regulatory T cells. Eur J Immunol 2011; 41:3101-13. [PMID: 21932448 DOI: 10.1002/eji.201141986] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 08/24/2011] [Accepted: 08/31/2011] [Indexed: 01/08/2023]
Abstract
Dominant tolerance to self-antigen requires the presence of sufficient numbers of CD4(+) Foxp3(+) Treg cells with matching antigen specificity. However, the size and role of TCR repertoire diversity for antigen-specific immuno-regulation through Treg cells is not clear. Here, we developed and applied a novel high-throughput (HT) TCR sequencing approach to analyze the TCR repertoire of Treg cells and revealed the importance of high diversity for Treg-cell homeostasis and function. We found that highly polyclonal Treg cells from WT mice vigorously expanded after adoptive transfer into non-lymphopenic TCR-transgenic recipients with low Treg-cell diversity. In that system, we identified specific Treg-cell TCR preferences in distinct anatomic locations such as the mesenteric LN indicating that Treg cells continuously compete for MHC class-II-presented self-, food-, or flora-antigen. Functionally, we showed that high TCR diversity was required for optimal suppressive function of Treg cells in experimental acute graft versus host disease (GvHD). In conclusion, we suggest that efficient immuno-regulation by Treg cells requires high TCR diversity. Thereby, continuous competition of peripheral Treg cells for limited self-antigen shapes an organ-optimized, yet highly diverse, local TCR repertoire.
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Affiliation(s)
- Lisa Föhse
- Institute of Immunology, Hannover Medical School, Hannover, Germany
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36
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Tucker CF, Nebane-Ambe DL, Chhabra A, Parnell SA, Zhao Y, Alard P, Kosiewicz MM. Decreased frequencies of CD4+CD25+Foxp3+cells and the potent CD103+subset in peripheral lymph nodes correlate with autoimmune disease predisposition in some strains of mice. Autoimmunity 2011; 44:453-64. [DOI: 10.3109/08916934.2011.568553] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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37
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del Rio R, Sun Y, Alard P, Tung KSK, Teuscher C. H2 control of natural T regulatory cell frequency in the lymph node correlates with susceptibility to day 3 thymectomy-induced autoimmune disease. THE JOURNAL OF IMMUNOLOGY 2010; 186:382-9. [PMID: 21135167 DOI: 10.4049/jimmunol.1002110] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Day 3 thymectomy (D3Tx) results in a loss of peripheral tolerance mediated by natural regulatory T cells (nTregs) and development of autoimmune ovarian dysgenesis (AOD) and autoimmune dacryoadenitis (ADA) in A/J and (C57BL/6J × A/J) F(1) hybrids (B6A), but not in C57BL/6J (B6) mice. Previously, using quantitative trait locus (QTL) linkage analysis, we showed that D3Tx-AOD is controlled by five unlinked QTL (Aod1-Aod5) and H2. In this study, using D3Tx B6-Chr(A/J)/NaJ chromosome (Chr) substitution strains, we confirm that QTL on Chr16 (Aod1a/Aod1b), Chr3 (Aod2), Chr1 (Aod3), Chr2 (Aod4), Chr7 (Aod5), and Chr17 (H2) control D3Tx-AOD susceptibility. In addition, we also present data mapping QTL controlling D3Tx-ADA to Chr17 (Ada1/H2), Chr1 (Ada2), and Chr3 (Ada3). Importantly, B6-ChrX(A/J) mice were as resistant to D3Tx-AOD and D3Tx-ADA as B6 mice, thereby excluding Foxp3 as a susceptibility gene in these models. Moreover, we report quantitative differences in the frequency of nTregs in the lymph nodes (LNs), but not spleen or thymus, of AOD/ADA-resistant B6 and AOD/ADA-susceptible A/J, B6A, and B6-Chr17(A/J) mice. Similar results correlating with experimental allergic encephalomyelitis and orchitis susceptibility were seen with B10.S and SJL/J mice. Using H2-congenic mice, we show that the observed difference in frequency of LN nTregs is controlled by Ada1/H2. These data support the existence of an LN-specific, H2-controlled mechanism regulating the prevalence of nTregs in autoimmune disease susceptibility.
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Affiliation(s)
- Roxana del Rio
- Department of Medicine, University of Vermont, Burlington, VT 05405, USA
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38
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Rempala GA, Seweryn M, Ignatowicz L. Model for comparative analysis of antigen receptor repertoires. J Theor Biol 2010; 269:1-15. [PMID: 20955715 DOI: 10.1016/j.jtbi.2010.10.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 09/09/2010] [Accepted: 10/04/2010] [Indexed: 11/30/2022]
Abstract
In modern molecular biology one of the standard ways of analyzing a vertebrate immune system is to sequence and compare the counts of specific antigen receptor clones (either immunoglobulins or T-cell receptors) derived from various tissues under different experimental or clinical conditions. The resulting statistical challenges are difficult and do not fit readily into the standard statistical framework of contingency tables primarily due to the serious under-sampling of the receptor populations. This under-sampling is caused, on one hand, by the extreme diversity of antigen receptor repertoires maintained by the immune system and, on the other, by the high cost and labor intensity of the receptor data collection process. In most of the recent immunological literature the differences across antigen receptor populations are examined via non-parametric statistical measures of the species overlap and diversity borrowed from ecological studies. While this approach is robust in a wide range of situations, it seems to provide little insight into the underlying clonal size distribution and the overall mechanism differentiating the receptor populations. As a possible alternative, the current paper presents a parametric method that adjusts for the data under-sampling as well as provides a unifying approach to a simultaneous comparison of multiple receptor groups by means of the modern statistical tools of unsupervised learning. The parametric model is based on a flexible multivariate Poisson-lognormal distribution and is seen to be a natural generalization of the univariate Poisson-lognormal models used in the ecological studies of biodiversity patterns. The procedure for evaluating a model's fit is described along with the public domain software developed to perform the necessary diagnostics. The model-driven analysis is seen to compare favorably vis a vis traditional methods when applied to the data from T-cell receptors in transgenic mice populations.
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Affiliation(s)
- Grzegorz A Rempala
- Department of Biostatistics and the Cancer Center, Medical College of Georgia, Augusta, GA 30912, USA.
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39
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Singh Y, Ferreira C, Chan ACY, Dyson J, Garden OA. Restricted TCR-α CDR3 Diversity Disadvantages Natural Regulatory T Cell Development in the B6.2.16 β-Chain Transgenic Mouse. THE JOURNAL OF IMMUNOLOGY 2010; 185:3408-16. [DOI: 10.4049/jimmunol.1001088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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40
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Current world literature. Curr Opin Endocrinol Diabetes Obes 2010; 17:384-93. [PMID: 20588116 DOI: 10.1097/med.0b013e32833c4b2b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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41
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Sepúlveda N, Paulino CD, Carneiro J. Estimation of T-cell repertoire diversity and clonal size distribution by Poisson abundance models. J Immunol Methods 2010; 353:124-37. [DOI: 10.1016/j.jim.2009.11.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 11/10/2009] [Accepted: 11/10/2009] [Indexed: 11/16/2022]
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Thymic selection and lineage commitment of CD4(+)Foxp3(+) regulatory T lymphocytes. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2010; 92:251-77. [PMID: 20800824 DOI: 10.1016/s1877-1173(10)92010-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Regulatory T lymphocytes play a central role in the control of a variety of immune-responses. Their absence in humans and in experimental animal models leads to severe autoimmune and inflammatory disorders. Consistent with their major role in prevention of autoimmune pathology, their repertoire is enriched in autospecific cells. Probably the majority of regulatory T cells develop in the thymus. How T cell-precursors choose between the conventional versus regulatory T cell lineages remains an unanswered question. More is known about selection of regulatory T cell precursors. Positive selection of these cells is favored by high affinity interactions with MHC class II/peptide ligands expressed by thymic epithelial or dendritic cells. They are also known to be relatively resistant to negative selection. These two parameters allow for the generation of the autoreactive regulatory T cell repertoire, and clearly distinguish selection-criteria of conventional versus regulatory T cell-precursors. It will now be important to elucidate the molecular mechanisms involved in the intrathymic choice of the regulatory T cell-lineage.
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