1
|
Zhu C, Liang Q, Liu Y, Kong D, Zhang J, Wang H, Wang K, Guo Z. Kidney injury in response to crystallization of calcium oxalate leads to rearrangement of the intrarenal T cell receptor delta immune repertoire. J Transl Med 2019; 17:278. [PMID: 31438987 PMCID: PMC6704580 DOI: 10.1186/s12967-019-2022-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 08/13/2019] [Indexed: 02/07/2023] Open
Abstract
Background Calcium oxalate (CaOx), the major constituent of most kidney stones, induces inflammatory infiltration and injures renal tubular cells. However, the role of γδT cells in CaOx-mediated kidney injury remains unclear. Therefore, this study investigated the distribution of intrarenal γδT cells and T cell receptor δ (TCRδ) immune repertoires in response to interactions with CaOx crystals. Methods CaOx crystal mouse model was established by glyoxylate injection. Flow cytometer was used to analyze the expression of CD69 and IL-17 from intrarenal γδT cells. Furthermore, TCR immune repertoire sequencing (IR-Seq) was used to monitor the profile of the TCRδ immune repertoire. Results Our results indicated that CaOx crystals lead to obvious increases in the expression and activation of intrarenal γδT cells. In TCRδ immune repertoire, the majority of V/J gene and V–J/V–D–J combination segments, barring individual exceptions, were similar between kidneys with CaOx formation and control kidneys. Impressively, high complementarity determining region 3 (CDR3) diversity was observed in response to CaOx crystal formation along with distinct CDR3 distribution and abundance. Conclusion Our work suggests the presence of aberrant γδT cell activation and reconstitution of the TCRδ immune repertoire in response to CaOx crystal deposition.
Collapse
Affiliation(s)
- Chao Zhu
- Department of Nephrology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Qing Liang
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Yaqun Liu
- Department of Rheumatology and Immunology, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China
| | - Deliang Kong
- Department of Nephrology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Jie Zhang
- Department of Nephrology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Hu Wang
- Department of Nephrology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Kejia Wang
- Department of Basic Medical Sciences, School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China.
| | - Zhiyong Guo
- Department of Nephrology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China.
| |
Collapse
|
2
|
Peripheral T cell receptor beta immune repertoire is promptly reconstituted after acute myocardial infarction. J Transl Med 2019; 17:40. [PMID: 30728066 PMCID: PMC6366076 DOI: 10.1186/s12967-019-1788-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 02/04/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Acute myocardial infarction (AMI) is characterized by an inflammatory process in which T cell plays a key role. However, the profile of immune microenvironment in AMI is still uncertain. High-throughput sequencing of T cell receptor (TCR) provides deep insight into monitoring the immune microenvironment. METHODS 30 patients with AMI were enrolled and 30 healthy individuals were recruited as controls. Flow cytometer were used to analyze the distribution of αβ T cells and their CD69 expression from peripheral leukomonocytes. TCRβ repertoire library was amplified by two-round multiplex PCR and detected by next-generation sequencing (NGS). RESULTS The percentage of αβ T cells in AMI patients were significantly restricted than those in healthy controls, while the highly activated αβ T cells along with distinguishing usage of variable (V), diversity (D) and joining (J) gene segments were also found in AMI patients. In addition, AMI induced a significantly restricted CDR3 amino acid (AA) diversity and remarkably reconstituted TCR immune repertoires. Finally, we identified several AMI-associated tendency of CDR3 AAs expression after AMI. CONCLUSIONS Our work suggests that the aberrant αβ T cells distribution and activation may associated with the pathogenesis of AMI and demonstrates a reconstitution of TCRβ immune repertoire after AMI.
Collapse
|
3
|
Wei J, Zanker D, Di Carluccio AR, Smelkinson MG, Takeda K, Seedhom MO, Dersh D, Gibbs JS, Yang N, Jadhav A, Chen W, Yewdell JW. Varied Role of Ubiquitylation in Generating MHC Class I Peptide Ligands. THE JOURNAL OF IMMUNOLOGY 2017; 198:3835-3845. [PMID: 28363906 DOI: 10.4049/jimmunol.1602122] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 03/08/2017] [Indexed: 12/11/2022]
Abstract
CD8+ T cell immunosurveillance is based on recognizing oligopeptides presented by MHC class I molecules. Despite decades of study, the importance of protein ubiquitylation to peptide generation remains uncertain. In this study, we examined the ability of MLN7243, a recently described ubiquitin-activating enzyme E1 inhibitor, to block overall cytosolic peptide generation and generation of specific peptides from vaccinia- and influenza A virus-encoded proteins. We show that MLN7243 rapidly inhibits ubiquitylation in a variety of cell lines and can profoundly reduce the generation of cytosolic peptides. Kinetic analysis of specific peptide generation reveals that ubiquitylation of defective ribosomal products is rate limiting in generating class I peptide complexes. More generally, our findings demonstrate that the requirement for ubiquitylation in MHC class I-restricted Ag processing varies with class I allomorph, cell type, source protein, and peptide context. Thus, ubiquitin-dependent and -independent pathways robustly contribute to MHC class I-based immunosurveillance.
Collapse
Affiliation(s)
- Jiajie Wei
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Damien Zanker
- T Cell Laboratory, School of Molecular Science, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Anthony R Di Carluccio
- T Cell Laboratory, School of Molecular Science, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Margery G Smelkinson
- Biological Imaging Section, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Kazuyo Takeda
- Microscopy and Imaging Core Facility, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993; and
| | - Mina O Seedhom
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Devin Dersh
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - James S Gibbs
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Ning Yang
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Ajit Jadhav
- Chemical Genomics Center, National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20892
| | - Weisan Chen
- T Cell Laboratory, School of Molecular Science, La Trobe University, Bundoora, Victoria 3086, Australia
| | - Jonathan W Yewdell
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892;
| |
Collapse
|
4
|
Yousef S, Planas R, Chakroun K, Hoffmeister-Ullerich S, Binder TMC, Eiermann TH, Martin R, Sospedra M. TCR Bias and HLA Cross-Restriction Are Strategies of Human Brain-Infiltrating JC Virus-Specific CD4+T Cells during Viral Infection. THE JOURNAL OF IMMUNOLOGY 2012; 189:3618-30. [DOI: 10.4049/jimmunol.1201612] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
5
|
Two distinct conformations of a rinderpest virus epitope presented by bovine major histocompatibility complex class I N*01801: a host strategy to present featured peptides. J Virol 2011; 85:6038-48. [PMID: 21450819 DOI: 10.1128/jvi.00030-11] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The presentation of viral peptide epitopes to host cytotoxic T lymphocytes (CTLs) is crucial for adaptive cellular immunity to clear the virus infection, especially for some chronic viral infections. Indeed, hosts have developed effective strategies to achieve this goal. The ideal scenario would be that the peptide epitopes stimulate a broad spectrum of CTL responses with diversified T-cell receptor (TCR) usage (the TCR repertoire). It is believed that a diversified TCR repertoire requires a "featured" peptide to be presented by the host major histocompatibility complex (MHC). A featured peptide can be processed and presented in a number of ways. Here, using the X-ray diffraction method, the crystal structures of an antigenic peptide derived from rinderpest virus presented by bovine MHC class I N*01801 (BoLA-A11) have been solved, and two distinct conformations of the presented peptide are clearly displayed. A detailed analysis of the structure and comparative sequences revealed that the polymorphic amino acid isoleucine 73 (Ile73) is extremely flexible, allowing the MHC groove to adopt different conformations to accommodate the rinderpest virus peptide. This makes the peptide more featured by exposing different amino acids for T-cell recognition. The crystal structures also demonstrated that the N*01801 molecule has an unusually large A pocket, resulting in the special conformation of the P1 residue at the N terminus of the peptide. We propose that this strategy of host peptide presentation might be beneficial for creating a diversified TCR repertoire, which is important for a more-effective CTL response.
Collapse
|
6
|
Novel immunodominant peptide presentation strategy: a featured HLA-A*2402-restricted cytotoxic T-lymphocyte epitope stabilized by intrachain hydrogen bonds from severe acute respiratory syndrome coronavirus nucleocapsid protein. J Virol 2010; 84:11849-57. [PMID: 20844028 DOI: 10.1128/jvi.01464-10] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Antigenic peptides recognized by virus-specific cytotoxic T lymphocytes (CTLs) are presented by major histocompatibility complex (MHC; or human leukocyte antigen [HLA] in humans) molecules, and the peptide selection and presentation strategy of the host has been studied to guide our understanding of cellular immunity and vaccine development. Here, a severe acute respiratory syndrome coronavirus (SARS-CoV) nucleocapsid (N) protein-derived CTL epitope, N1 (QFKDNVILL), restricted by HLA-A*2402 was identified by a series of in vitro studies, including a computer-assisted algorithm for prediction, stabilization of the peptide by co-refolding with HLA-A*2402 heavy chain and β(2)-microglobulin (β(2)m), and T2-A24 cell binding. Consequently, the antigenicity of the peptide was confirmed by enzyme-linked immunospot (ELISPOT), proliferation assays, and HLA-peptide complex tetramer staining using peripheral blood mononuclear cells (PBMCs) from donors who had recovered from SARS donors. Furthermore, the crystal structure of HLA-A*2402 complexed with peptide N1 was determined, and the featured peptide was characterized with two unexpected intrachain hydrogen bonds which augment the central residues to bulge out of the binding groove. This may contribute to the T-cell receptor (TCR) interaction, showing a host immunodominant peptide presentation strategy. Meanwhile, a rapid and efficient strategy is presented for the determination of naturally presented CTL epitopes in the context of given HLA alleles of interest from long immunogenic overlapping peptides.
Collapse
|
7
|
Turner SJ, Doherty PC, McCluskey J, Rossjohn J. Structural determinants of T-cell receptor bias in immunity. Nat Rev Immunol 2006; 6:883-94. [PMID: 17110956 DOI: 10.1038/nri1977] [Citation(s) in RCA: 273] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Antigen-specific T-cell responses induced by infection, transplantation, autoimmunity or hypersensitivity are characterized by cells expressing biased profiles of T-cell receptors (TCRs) that are selected from a diverse, naive repertoire. Here, we review the evidence for these TCR biases, focusing on crystallographic analysis of the structural constraints that determine the binding of a TCR to its ligand and the persistence of certain TCRs in an immune repertoire. We discuss the ways in which diversity in a selected TCR repertoire can contribute to protective immunity and the implications of this for vaccine design and immunotherapy.
Collapse
Affiliation(s)
- Stephen J Turner
- Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria 3010, Australia.
| | | | | | | |
Collapse
|
8
|
Lavoie PM, Dumont AR, McGrath H, Kernaleguen AE, Sékaly RP. Delayed expansion of a restricted T cell repertoire by low-density TCR ligands. Int Immunol 2005; 17:931-41. [PMID: 15972304 DOI: 10.1093/intimm/dxh273] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The role of TCR ligand density (i.e. the number of antigen-MHC complexes) in modulating the diversity of a T cell response selected from a pool of naive precursors remains largely undefined. By measuring early-activation markers up-regulation and proliferation following stimulation with staphylococcal enterotoxin A (SEA), we demonstrate that decreasing the ligand dose below an optimal concentration leads to the delayed activation of a restricted set of TCRVbeta-bearing T cells, with the specific, non-stochastic exclusion of some TCRVbeta+ T cells from the activated pool. Our results suggest that the failure of these TCRVbeta-bearing T cells to reach the activation threshold at sub-optimal ligand concentration is due to the inefficiency of TCR engagement, as measured by TCR internalization, and does not correlate with the relative precursor frequency in the non-immune repertoire. Moreover, even at SEA concentrations that lead to the simultaneous proliferation of all SEA-reactive T cells, we observe marked differences in the ability to secrete cytokines among the different responsive TCRVbeta-bearing T cells. Altogether, our results indicate that the development of a T cell response to a scarce display of ligand significantly narrows TCR repertoire diversity by mechanisms that involve focusing of the repertoire on the expansion of those T cells with the highest avidity of TCR engagement.
Collapse
Affiliation(s)
- Pascal M Lavoie
- Laboratoire d'Immunologie, Centre de recherche du Centre Hospitalier de l'Université de Montréal, Hôpital Saint-Luc, Montréal, Québec H2X 1P1, Canada
| | | | | | | | | |
Collapse
|
9
|
Tynan FE, Borg NA, Miles JJ, Beddoe T, El-Hassen D, Silins SL, van Zuylen WJM, Purcell AW, Kjer-Nielsen L, McCluskey J, Burrows SR, Rossjohn J. High resolution structures of highly bulged viral epitopes bound to major histocompatibility complex class I. Implications for T-cell receptor engagement and T-cell immunodominance. J Biol Chem 2005; 280:23900-9. [PMID: 15849183 DOI: 10.1074/jbc.m503060200] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Although HLA class I alleles can bind epitopes up to 14 amino acids in length, little is known about the immunogenicity or the responding T-cell repertoire against such determinants. Here, we describe an HLA-B*3508-restricted cytotoxic T lymphocyte response to a 13-mer viral epitope (LPEPLPQGQLTAY). The rigid, centrally bulged epitope generated a biased T-cell response. Only the N-terminal face of the peptide bulge was critical for recognition by the dominant clonotype SB27. The SB27 public T-cell receptor (TcR) associated slowly onto the complex between the bulged peptide and the major histocompatibility complex, suggesting significant remodeling upon engagement. The broad antigen-binding cleft of HLA-B*3508 represents a critical feature for engagement of the public TcR, as the narrower binding cleft of HLA-B*3501(LPEPLPQGQLTAY), which differs from HLA-B*3508 by a single amino acid polymorphism (Arg156 --> Leu), interacted poorly with the dominant TcR. Biased TcR usage in this cytotoxic T lymphocyte response appears to reflect a dominant role of the prominent peptide x major histocompatibility complex class I surface.
Collapse
Affiliation(s)
- Fleur E Tynan
- Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Turner SJ, Kedzierska K, Komodromou H, La Gruta NL, Dunstone MA, Webb AI, Webby R, Walden H, Xie W, McCluskey J, Purcell AW, Rossjohn J, Doherty PC. Lack of prominent peptide-major histocompatibility complex features limits repertoire diversity in virus-specific CD8+ T cell populations. Nat Immunol 2005; 6:382-9. [PMID: 15735650 DOI: 10.1038/ni1175] [Citation(s) in RCA: 121] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2004] [Accepted: 01/31/2005] [Indexed: 11/08/2022]
Abstract
Using both 'reverse genetics' and structural analysis, we have examined the in vivo relationship between antigenicity and T cell receptor (TCR) repertoire diversity. Influenza A virus infection of C57BL/6 mice induces profoundly different TCR repertoires specific for the nucleoprotein peptide of amino acids 366-374 (NP366) and the acid polymerase peptide of amino acids 224-233 (PA224) presented by H-2D(b). Here we show the H-2D(b)-NP366 complex with a 'featureless' structure selected a limited TCR repertoire characterized by 'public' TCR usage. In contrast, the prominent H-2D(b)-PA224 complex selected diverse, individually 'private' TCR repertoires. Substitution of the arginine at position 7 of PA224 with an alanine reduced the accessible side chains of the epitope. Infection with an engineered virus containing a mutation at the site encoding the exposed arginine at position 7 of PA224 selected a restricted TCR repertoire similar in diversity to that of the H-2D(b)-NP366-specific response. Thus, the lack of prominent features in an antigenic complex of peptide and major histocompatibility complex class I is associated with a diminished spectrum of TCR usage.
Collapse
Affiliation(s)
- Stephen J Turner
- Department of Microbiology and Immunology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Walker PR, Calzascia T, Schnuriger V, Chalmers D, Saas P, Dietrich PY. Loss of Fas (CD95/APO-1) expression by antigen-specific cytotoxic T cells is reversed by inhibiting DNA methylation. Cell Immunol 2000; 206:51-8. [PMID: 11161437 DOI: 10.1006/cimm.2000.1722] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Elimination of clonally expanded peripheral CD8 T cells was thought to involve apoptosis induction mediated principally by TNF, but recently Fas (CD95/APO-1) has been shown to play a role in certain responses. Here we study Fas expression and sensitivity to its ligation on murine CD8 cells specific for the CW3 antigen expressed by transfected P815 cells. Fas was progressively downregulated after successive in vitro restimulations of antigen-specific CD8 cells, until clones became Fas negative and totally resistant to the effects of recombinant Fas ligand. In contrast, Fas expression by in vivo restimulated antigen-specific cells did not diminish. Loss of Fas expression in vitro was not totally irreversible, since it could be reinduced by inhibition of DNA methylation. Understanding how Fas may be differentially regulated in vivo and in vitro is an important issue for the optimal manipulation of T cells for adoptive immunotherapy protocols.
Collapse
Affiliation(s)
- P R Walker
- Laboratory of Tumour Immunology, Division of Oncology, University Hospital Geneva, CH-1211 Geneva 14, Switzerland.
| | | | | | | | | | | |
Collapse
|
12
|
Abstract
Quantitative analyses of antigen (Ag)-specific alphabeta T cell populations have provided a large body of information on the natural course of T cell immune responses. New tools are now available to determine the clonal composition of Ag-specific pools in individual responders, an approach which offers direct insights into the generation of T cell immune responses and establishment of protective immunity. The present review discusses the parameters that determine the composition of Ag-specific T cell responses. Emphasis is placed on the role of the naive alphabeta T cell repertoire and on the dynamics of individual Ag-specific T cell clones during the successive phases of an immune response.
Collapse
Affiliation(s)
- P Bousso
- Unité de Biologie Moléculaire du Gène, INSERM U277, Institut Pasteur, 25 rue du Dr Roux, Paris, Cedex 15, 75015-75724, France.
| | | |
Collapse
|
13
|
Maryanski JL, Attuil V, Bucher P, Walker PR. A quantitative, single-cell PCR analysis of an antigen-specific TCR repertoire selected during an in vivo CD8 response: direct evidence for a wide range of clone sizes with uniform tissue distribution. Mol Immunol 1999; 36:745-53. [PMID: 10593513 DOI: 10.1016/s0161-5890(99)00088-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The development of T cell effector and memory responses against foreign antigens (Ags) involves the activation, differentiation and proliferation of naive T cells expressing distinct Ag-specific TCRs. Understanding the complexity of Ag-selected TCR repertoires in individual responders in terms of the sequences selected and their relative frequencies may provide indications about how a repertoire is established and suggest ways to influence the outcome of an immune response. Most methods of repertoire analysis are unsuitable for calculating the relative in vivo frequencies of Ag-specific clones (expressing distinct TCRs) selected during an immune response, whereas sequence data obtained by single-cell PCR analysis directly reflect cell frequencies if a sufficiently large number of cells is sampled. Using a CD8 T cell response in normal mice in which Ag-selected cells are identified by cell surface phenotype and rearranged TCRBV sequences are determined by PCR amplification of genomic DNA directly from single cells, we have analyzed a large number (>200 per animal) of structurally-related Ag-specific TCRs to calculate the frequencies of distinct TCRs selected by individual mice. We found that each responder selects a unique Ag-specific TCR repertoire in which the various TCRBV sequences are present in a wide range of frequencies. However, the overall distribution of sequences is quite similar for different responder animals. Moreover, an individual's selected TCR repertoire is uniformly represented among Ag-specific CD8 cells circulating in the blood or localized in the spleen or liver. Relatively few sequences make up the bulk of the repertoire and account for the oligoclonality observed in earlier studies. We discuss various models that could account for this skewed distribution of an Ag-selected TCR repertoire.
Collapse
Affiliation(s)
- J L Maryanski
- INSERM Unit 503, Ecole Normale Supérieure de Lyon, France.
| | | | | | | |
Collapse
|
14
|
Bour H, Michielin O, Bousso P, Cerottini JC, MacDonald HR. Dramatic Influence of Vβ Gene Polymorphism on an Antigen-Specific CD8+ T Cell Response In Vivo. THE JOURNAL OF IMMUNOLOGY 1999. [DOI: 10.4049/jimmunol.162.8.4647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
According to recent crystallographic studies, the TCR-αβ contacts MHC class I-bound antigenic peptides via the polymorphic V gene-encoded complementarity-determining region 1β (CDR1β) and the hypervariable (D)J-encoded CDR3β and CDR3α domains. To evaluate directly the relative importance of CDR1β polymorphism on the fine specificity of T cell responses in vivo, we have taken advantage of congenic Vβa and Vβb mouse strains that differ by a CDR1 polymorphism in the Vβ10 gene segment. The Vβ10-restricted CD8+ T cell response to a defined immunodominant epitope was dramatically reduced in Vβa compared with Vβb mice, as measured either by the expansion of Vβ10+ cells or by the binding of MHC-peptide tetramers. These data indicate that Vβ polymorphism has an important impact on TCR-ligand binding in vivo, presumably by modifying the affinity of CDR1β-peptide interactions.
Collapse
Affiliation(s)
- Hélène Bour
- *Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Epalinges, Switzerland
| | - Olivier Michielin
- †Le Bel Institute, Louis Pasteur University, Strasbourg, France; and
| | - Philippe Bousso
- ‡Laboratory of Molecular Biology of the Gene, Pasteur Institute, Institut National de la Santé et de la Recherche Médicale U277, Paris, France
| | - Jean-Charles Cerottini
- *Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Epalinges, Switzerland
| | - H. Robson MacDonald
- *Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Epalinges, Switzerland
| |
Collapse
|
15
|
Dulphy N, Peyrat MA, Tieng V, Douay C, Rabian C, Tamouza R, Laoussadi S, Berenbaum F, Chabot A, Bonneville M, Charron D, Toubert A. Common Intra-Articular T Cell Expansions in Patients with Reactive Arthritis: Identical β-Chain Junctional Sequences and Cytotoxicity Toward HLA-B27. THE JOURNAL OF IMMUNOLOGY 1999. [DOI: 10.4049/jimmunol.162.7.3830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Spondyloarthropathies constitute a group of autoimmune diseases of special interest because of their tight association with the MHC class I molecule HLA-B27 and the bacterial triggering of some clinical forms called reactive arthritis (ReA). One current hypothesis is the presentation by HLA-B27 of a so-called arthritogenic peptide to T cells. To better focus on the relevant T cell populations within the joint, we performed an extensive β-chain T cell repertoire analysis of synovial fluid compared with PBL in seven patients, four of whom were characterized as having ReA triggered by Yersinia enterocolitica, Chlamydia trachomatis, or Shigella sonnei. Analysis of the size diversity of the β-chain complementarity-determining region 3 (CDR3) allowed us to evaluate the degree of T cell clonality in the samples. Oligoclonal T cell expansions were frequently observed in the joint. In one patient, CDR3 amino acid sequences of major expansions using two different BV genes were identical. One dominant T cell expansion and several CDR3 amino acid sequences were identical in two different patients. Furthermore, one sequence was identical with a sequence reported independently in a Salmonella-induced ReA patient. Together, these data indicate a surprisingly high degree of conservation in the T cell responses in recent-onset ReA triggered by different micro-organisms. A CD8+ synovial line expressing shared clonotypes was established and reacted toward several B*2705 lymphoblastoid cell lines, therefore supporting a molecular mimicry phenomenon at the T cell level in the disease mechanism.
Collapse
Affiliation(s)
- Nicolas Dulphy
- *Laboratoire d’Immunologie et d’Histocompatibilité, Institut National de la Santé et de la Recherche Médicale, Unit 396, Université Paris VII, Centre G. Hayem, Hôpital Saint-Louis, Paris, France
| | - Marie-Alix Peyrat
- †Institut National de la Santé et de la Recherche Médicale, Unit 463, Institut de Biologie, Nantes, France
| | - Vannary Tieng
- *Laboratoire d’Immunologie et d’Histocompatibilité, Institut National de la Santé et de la Recherche Médicale, Unit 396, Université Paris VII, Centre G. Hayem, Hôpital Saint-Louis, Paris, France
| | - Corinne Douay
- *Laboratoire d’Immunologie et d’Histocompatibilité, Institut National de la Santé et de la Recherche Médicale, Unit 396, Université Paris VII, Centre G. Hayem, Hôpital Saint-Louis, Paris, France
| | - Claire Rabian
- *Laboratoire d’Immunologie et d’Histocompatibilité, Institut National de la Santé et de la Recherche Médicale, Unit 396, Université Paris VII, Centre G. Hayem, Hôpital Saint-Louis, Paris, France
| | - Ryad Tamouza
- *Laboratoire d’Immunologie et d’Histocompatibilité, Institut National de la Santé et de la Recherche Médicale, Unit 396, Université Paris VII, Centre G. Hayem, Hôpital Saint-Louis, Paris, France
| | | | - Francis Berenbaum
- §Service de Rhumatologie, Hôpital Saint-Antoine, Paris, France; and
| | - Agnes Chabot
- ¶Service de Rhumatologie A, Hôpital Lariboisière, Paris, France
| | - Marc Bonneville
- †Institut National de la Santé et de la Recherche Médicale, Unit 463, Institut de Biologie, Nantes, France
| | - Dominique Charron
- *Laboratoire d’Immunologie et d’Histocompatibilité, Institut National de la Santé et de la Recherche Médicale, Unit 396, Université Paris VII, Centre G. Hayem, Hôpital Saint-Louis, Paris, France
| | - Antoine Toubert
- *Laboratoire d’Immunologie et d’Histocompatibilité, Institut National de la Santé et de la Recherche Médicale, Unit 396, Université Paris VII, Centre G. Hayem, Hôpital Saint-Louis, Paris, France
| |
Collapse
|
16
|
Abstract
Degeneracy rather than unique ligand specificity seems to guide T cell functions. This view has evolved from analyses of T cell development and responses in vivo, as well as studies with synthetic molecular libraries in vitro, and has opened new prospects both for understanding T cell biology and for applied immunology.
Collapse
Affiliation(s)
- K Sparbier
- Department of Dermatology, Medical Faculty Charité, Humboldt University, D-10089, Berlin, Germany
| | | |
Collapse
|