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Goda S, Hayakawa S, Karakawa S, Okada S, Kawaguchi H, Kobayashi M. Possible involvement of regulatory T cell abnormalities and variational usage of TCR repertoire in children with autoimmune neutropenia. Clin Exp Immunol 2020; 204:1-13. [PMID: 33289074 DOI: 10.1111/cei.13559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 01/16/2023] Open
Abstract
Autoimmune neutropenia (AIN) in childhood is characterized by chronic neutropenia and positivity for anti-neutrophil antibodies, resulting in the excessive destruction of neutrophils. In this study, we investigated the involvement of regulatory T cells (Tregs ) in the pathogenesis of AIN in childhood. Tregs have been classified into three subpopulations based on the expressions of CD45RA and forkhead box protein 3 (FoxP3): resting Tregs , activated Tregs and non-suppressive Tregs . The frequency of activated Tregs (CD4+ CD25+ FoxP3high CD45RA- T cells) as well as that of total Tregs (CD4+ CD25+ FoxP3+ T cells) in peripheral blood was significantly decreased in patients with AIN. Analysis of the T cell receptor (TCR)-Vβ repertoire of CD4+ T cells revealed skewed usages in patients with AIN compared with that observed in age-matched control subjects. Regarding T cell subsets, the use of four of 24 TCR-Vβ families in Tregs and one in conventional T cells were increased in patients with AIN. The number of patients with AIN who showed skewed usages of TCR-Vβ family in conventional and Tregs was significantly higher than that reported in control subjects. When the preference between Tregs and conventional T cells in each TCR-Vβ family was individually compared, different use was prominently observed in the TCR-Vβ 9 family in patients with AIN. These results suggest that the quantitative abnormalities of Tregs and the skew of the TCR-Vβ repertoire in CD4+ T cells, including Tregs and conventional T cells, may be related to autoantibody production through a human neutrophil antigen-reactive T cell clone.
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Affiliation(s)
- S Goda
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - S Hayakawa
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - S Karakawa
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - S Okada
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - H Kawaguchi
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - M Kobayashi
- Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
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Huang J, Tan J, Chen Y, Huang S, Xu L, Zhang Y, Lu Y, Yu Z, Chen S, Li Y. A skewed distribution and increased PD-1+Vβ+CD4+/CD8+ T cells in patients with acute myeloid leukemia. J Leukoc Biol 2019; 106:725-732. [PMID: 31136687 DOI: 10.1002/jlb.ma0119-021r] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/14/2019] [Accepted: 05/19/2019] [Indexed: 12/16/2022] Open
Abstract
The limited application of immunotherapy in acute myeloid leukemia (AML) may be due to poor understanding of the global T cell immune dysfunction in AML. In this study, we analyzed the distribution characteristics of 24 TCR Vβ subfamilies in CD3+, CD4+, and CD8+ T cells in AML patients and healthy controls. The percentage of TCR Vβ subfamily T cells was predominately lower in most AML cases, while it was increased in some cases. TCR Vβ2+T cells were increased in AML, particularly TCR Vβ2+CD4+T cells, which were significantly higher. To further address the immunosuppression in different Vβ subfamilies, we characterized the distribution of program death-1 (PD-1)+T cells in TCR Vβ subfamilies of CD4+ and CD8+T cells. Significantly higher levels of PD-1+Vβ+T cells were found for most Vβ subfamilies in most AML cases. A higher percentage of PD-1+Vβ2+T cells with a high number of Vβ2+T cells was found in all of the CD3+, CD4+, and CD8+ T cell subsets. Moreover, increasing PD-1+Vβ7.2, Vβ8+, Vβ14+, Vβ16+, and Vβ22+CD8+T cells were distributed in the AML-M5 subtype group compared with the AML-M3 group. In addition, higher PD-1+ Vβ5.2+ and PD-1+ Vβ12+CD8+T cells were associated with AML patients who had a poor response to chemotherapy. In conclusion, increased PD-1+Vβ+T cells is a common characteristic of AML, higher PD-1+Vβ2+T cells may be associated with a low antileukemia effect, and higher PD-1+Vβ5.2+ and PD-1+Vβ12+CD8+T cells may be related to poor prognosis in AML. These characteristics may be worth considering as immune biomarkers for clinical outcome in AML.
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Affiliation(s)
- Jingying Huang
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
| | - Jiaxiong Tan
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
- Department of Hematology, First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Youchun Chen
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
| | - Shuxin Huang
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
| | - Ling Xu
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
- Department of Hematology, First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Yikai Zhang
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
| | - Yuhong Lu
- Department of Hematology, First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Zhi Yu
- Department of Hematology, First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Shaohua Chen
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
| | - Yangqiu Li
- Institute of Hematology, School of Medicine, Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou, China
- Department of Hematology, First Affiliated Hospital, Jinan University, Guangzhou, China
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Levy-Mendelovich S, Lev A, Aviner S, Rosenberg N, Kaplinsky C, Sharon N, Miskin H, Dvir A, Kenet G, Schushan IE, Somech R. Quantification of specific T and B cells immunological markers in children with chronic and transient ITP. Pediatr Blood Cancer 2017; 64. [PMID: 28544224 DOI: 10.1002/pbc.26646] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/25/2017] [Accepted: 04/18/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Immune thrombocytopenic purpura (ITP) is characterized by a transient (nonchronic) or permanent (chronic) decline in the number of platelets. Predicting the course of ITP, at the time of diagnosis, is of importance. Here we studied at diagnosis, clinical and immunological parameters in order to distinguish between different courses. The latter included the measure of new B and T cells using quantification of kappa-deleting recombination excision circles (KRECs) and T-cell receptor excision circles (TRECs), respectively. METHODS Blood samples were collected from 44 children with a clinical diagnosis of ITP. Real-time PCR was performed in order to quantify the number of copies of TREC and KREC followed by collection of clinical data from medical files. The children were retrospectively divided into two groups: chronic and nonchronic. RESULTS Twenty-four patients (54%) were classified as nonchronic ITP and 20 patients (46%) were classified as chronic ITP. We confirmed some clinical parameters (e.g., gender, age) but not others (e.g., preceding infection, level of thrombocytopenia) that distinguish patients with chronic and nonchronic course. While KREC quantification was similar in patients regardless the outcome of their disease, it was significantly higher than the level of controls (P < 0.05). TREC quantification was not different between patients and controls. CONCLUSIONS KREC but not TREC levels are different in patients comparing to controls, pointing to an overreaction of B-cell development as a role in the pathogenesis of ITP. These results may shed more lights on the immune mechanism of ITP.
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Affiliation(s)
- Sarina Levy-Mendelovich
- Pediatric Department A and the Immunology Services, "Edmond and Lily Safra" Children's Hospital, Jeffrey Modell Foundation Center, Sheba Medical Center, Tel Hashomer affiliated with Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Pediatric Hemato-Oncology Department, "Edmond and Lily Safra" Children's Hospital, Sheba Medical Center, Tel Hashomer affiliated to Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,National Hemphilia and Thrombosis Institute, Sheba Medical Center, Tel Hashomer affiliated to Sackler School of Medicine, Tel Aviv University, Israel
| | - Atar Lev
- Pediatric Department A and the Immunology Services, "Edmond and Lily Safra" Children's Hospital, Jeffrey Modell Foundation Center, Sheba Medical Center, Tel Hashomer affiliated with Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shraga Aviner
- Department of Pediatrics, Barzilai University Medical Center, Ashkelon affiliated to Ben Gurion University, Beer-Sheva, Israel
| | - Nurit Rosenberg
- Institute of Thrombosis and Hemostasis, Chaim Sheba Medical Center, Tel Hashomer affiliated to Sackler School of Medicine, Tel Aviv University, Israel
| | - Caim Kaplinsky
- Pediatric Hemato-Oncology Department, "Edmond and Lily Safra" Children's Hospital, Sheba Medical Center, Tel Hashomer affiliated to Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Nechama Sharon
- Pediatric Department, Laniado Hospital, Netanya affiliated to Sackler School of Medicine, Tel Aviv University, Israel
| | - Hagit Miskin
- Pediatric Hematoloy Unit, Shaare Zedek Medical Center, Jerusalem affiliated to Hebrew University School of Medicine, Jerusalem, Israel
| | - Aviya Dvir
- Institute of Thrombosis and Hemostasis, Chaim Sheba Medical Center, Tel Hashomer affiliated to Sackler School of Medicine, Tel Aviv University, Israel
| | - Gili Kenet
- National Hemphilia and Thrombosis Institute, Sheba Medical Center, Tel Hashomer affiliated to Sackler School of Medicine, Tel Aviv University, Israel
| | - Irit Eisen Schushan
- Neonatology Department, "Edmond and Lily Safra" Children's Hospital, Sheba Medical Center, Tel Hashomer affiliated to Sackler School of Medicine, Tel Aviv University, Israel
| | - Raz Somech
- Pediatric Department A and the Immunology Services, "Edmond and Lily Safra" Children's Hospital, Jeffrey Modell Foundation Center, Sheba Medical Center, Tel Hashomer affiliated with Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Zhong J, Chen S, Xu L, Lai J, Liao Z, Zhang T, Yu Z, Lu Y, Yang L, Wu X, Li B, Li Y. Lower expression of PD-1 and PD-L1 in peripheral blood from patients with chronic ITP. ACTA ACUST UNITED AC 2016; 21:552-7. [PMID: 27077771 DOI: 10.1080/10245332.2016.1155347] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND T-cell dysregulation is a major event involved in immune thrombocytopenic purpura (ITP). Increasing data have indicated that abnormal expression of T-cell immunosuppressive receptors, such as programmed death (PD) 1 and cytotoxic T lymphocyte antigen-4 (CTLA-4), may be related to autoimmune disease pathogenesis. METHODS We analyzed the expression levels of PD-1, its ligand PD-L1, and CTLA-4 in peripheral blood mononuclear cells from 18 patients with chronic ITP by real-time polymerase chain reaction, and samples from 20 healthy individuals served as control. RESULTS The results demonstrated significantly lower expression of PD-1 (median: 0.0015) and PD-L1 (median: 0.0572) in chronic ITP patients compared with healthy individuals (PD-1: median: 0.0117, P < 0.0001; PD-L1: median: 0.5428, P < 0.0001), while there was no significant difference in the CTLA-4 expression level between the chronic ITP patients (median: 0.0818) and healthy individuals (median: 0.1667) (P = 0.219). Moreover, a positive correlation between the expression levels of PD-1 and PD-L1 (rs = 0.486, P = 0.041) and CTLA-4 and PD-1 (rs = 0.643, P = 0.004) in the chronic ITP patients was found. CONCLUSION Consistently lower expression of T-cell immunosuppressive receptors is a common characteristic of chronic ITP, which may be associated with its pathogenesis.
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Affiliation(s)
- Jun Zhong
- a Department of Hematology , First Affiliated Hospital, Jinan University , Guangzhou 510632 , China
| | - Shaohua Chen
- b Institute of Hematology, Medical College, Jinan University , Guangzhou 510632 , China
| | - Ling Xu
- b Institute of Hematology, Medical College, Jinan University , Guangzhou 510632 , China
| | - Jing Lai
- a Department of Hematology , First Affiliated Hospital, Jinan University , Guangzhou 510632 , China
| | - Ziwei Liao
- b Institute of Hematology, Medical College, Jinan University , Guangzhou 510632 , China
| | - Tao Zhang
- a Department of Hematology , First Affiliated Hospital, Jinan University , Guangzhou 510632 , China
| | - Zhi Yu
- a Department of Hematology , First Affiliated Hospital, Jinan University , Guangzhou 510632 , China
| | - Yuhong Lu
- a Department of Hematology , First Affiliated Hospital, Jinan University , Guangzhou 510632 , China
| | - Lijian Yang
- b Institute of Hematology, Medical College, Jinan University , Guangzhou 510632 , China
| | - Xiuli Wu
- b Institute of Hematology, Medical College, Jinan University , Guangzhou 510632 , China
| | - Bo Li
- b Institute of Hematology, Medical College, Jinan University , Guangzhou 510632 , China
| | - Yangqiu Li
- a Department of Hematology , First Affiliated Hospital, Jinan University , Guangzhou 510632 , China.,b Institute of Hematology, Medical College, Jinan University , Guangzhou 510632 , China.,c Key Laboratory for Regenerative Medicine of Ministry of Education , Jinan University , Guangzhou 510632 , China
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Marino M, Maiuri MT, Di Sante G, Scuderi F, La Carpia F, Trakas N, Provenzano C, Zisimopoulou P, Ria F, Tzartos SJ, Evoli A, Bartoccioni E. T cell repertoire in DQ5-positive MuSK-positive myasthenia gravis patients. J Autoimmun 2014; 52:113-21. [DOI: 10.1016/j.jaut.2013.12.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Accepted: 12/08/2013] [Indexed: 11/26/2022]
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Jin Z, Wu X, Chen S, Yang L, Liu Q, Li Y. Distribution and clonality of the vα and vβ T-cell receptor repertoire of regulatory T cells in leukemia patients with and without graft versus host disease. DNA Cell Biol 2014; 33:182-8. [PMID: 24410134 DOI: 10.1089/dna.2013.2277] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Graft versus host disease (GVHD) is the main complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT). Recent data indicated that regulatory T (Treg) cells might relate to GVHD, and such functions might be mediated by certain T-cell receptor (TCR) subfamily of Treg cells. Thus, we analyzed the distribution and clonality of the TCR Vα and Vβ repertoire of Treg cells from leukemia patients with and without GVHD after allo-HSCT. Numerous TCR Vα subfamilies, including Vα1, Vα9, Vα13, Vα16-19, and Vα24-29, were absent in Treg cells after allo-HSCT. The usage numbers for the TCR Vα and Vβ subfamilies in Treg cells from patients without GVHD appeared more widely. The expression frequencies of Vα10 or Vα20 between both groups were significantly different. Moreover, the expression frequency of TCR Vβ2 subfamily in patients without GVHD was significantly higher than that in patients with GVHD. Oligoclonally expanded TCR Vα and Vβ Treg cells were identified in a few samples in both groups. Restricted utilization of the Vα and Vβ subfamilies and the absence of some important TCR rearrangements in Treg cells may be related to GVHD due to a lower regulating function of Treg subfamilies.
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Affiliation(s)
- Zhenyi Jin
- 1 Institute of Hematology, Jinan University , Guangzhou, China
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7
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Xuan L, Wu X, Wu M, Zhang Y, Liu H, Fan Z, Sun J, Liu Q. Effect of granulocyte colony-stimulating factor mobilization on the expression patterns, clonality and signal transduction of TRAV and TRBV repertoire. Immunobiology 2012; 217:816-22. [PMID: 22658922 DOI: 10.1016/j.imbio.2012.05.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Accepted: 05/07/2012] [Indexed: 10/28/2022]
Abstract
The immune modulatory effect of granulocyte colony-stimulating factor (G-CSF) on T cells resulted in an unexpected low incidence of graft-versus-host disease (GVHD) in allogeneic peripheral blood stem cell transplantation (allo-PBSCT). Recently, αβ(+) T cells are identified as the primary effector cells for GVHD. However, whether G-CSF could influence the repertoire of αβ(+) T cells (TRAV and TRBV repertoire) and CD3 genes remains unclear. To further characterize this feature, we investigated the effect of G-CSF mobilization on the T cell receptors (TCR) of αβ(+) T cells (TRAV and TRBV repertoire) and CD3 genes, as well as the association between the changes of TCR repertoire and GVHD in patients undergoing G-CSF mobilized allo-PBSCT. We found that G-CSF mobilization had an effect on the expression patterns, clonality and signal transduction of TRAV and TRBV repertoire. This alteration might play a role in mediating GVHD in G-CSF mobilized allo-PBSCT.
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Affiliation(s)
- Li Xuan
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Toltl LJ, Nazi I, Jafari R, Arnold DM. Piecing together the humoral and cellular mechanisms of immune thrombocytopenia. Semin Thromb Hemost 2011; 37:631-9. [PMID: 22102266 DOI: 10.1055/s-0031-1291373] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The precise mechanisms leading to platelet-targeted autoimmunity in immune thrombocytopenia (ITP) are not known. Cellular checkpoints normally regulate immunological self-reactivity during the development of B and T cells through cell deletion, receptor editing, induction of anergy, and extrinsic cellular suppression. When these checkpoints fail, tolerance to self-antigens may be lost. In this review, we summarize the various immune mechanisms contributing to the development of ITP and relate them back to the checkpoint model of autoimmunity. These mechanisms, including increased levels of lymphocyte growth factors, resistance to death signals, and loss of T-regulatory function, result in an environment permissive to the development of platelet-reactive B and T cells. The mechanisms that lead to thrombocytopenia once tolerance for platelet antigens is lost are examined, including complement-dependent and apoptotic pathways. An improved understanding of ITP pathogenesis will ultimately guide the development of better therapies.
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Affiliation(s)
- Lisa J Toltl
- Department of Medicine, Hamilton, Ontario, Canada
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Abstract
PURPOSE OF REVIEW Immune thrombocytopenia (ITP) is a bleeding disorder in which both antibody and cell-mediated autoimmune responses are directed against an individual's own platelets and/or megakaryocytes, leading to either enhanced platelet destruction and/or reduced platelet production, respectively. The cause of this platelet-specific autoimmunity remains unknown, but there has been a constant stream of recent publications that suggest ITP is the result of T-cell dysregulation. RECENT FINDINGS In the last 18 months, a rich tapestry of studies has emerged that seems to clarify some immunopathologic issues in ITP while raising new questions related to ITP pathogenesis. The current view on the immunopathogenic mechanisms associated with ITP appears to particularly concentrate on how incompetent CD4+ T-regulatory cells (Tregs) allow autoimmune effector mechanisms to proceed and cause thrombocytopenia. There is a parallel body of recent literature focusing on molecular mimicry mechanisms, B-cell abnormalities, abnormal cytokine patterns and genetic studies in ITP. Of interest, one can recognize inter-relationships between these immune dysregulations. SUMMARY This article will discuss the literature from the past 18 months pertaining to these observations and will show that whereas many of the T-cell defects have been clarified, new questions have also come to light and more immunopathological research is warranted.
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