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Xu Y, Wang Z, Li S, Su J, Gao L, Ou J, Lin Z, Luo OJ, Xiao C, Chen G. An in-depth understanding of the role and mechanisms of T cells in immune organ aging and age-related diseases. SCIENCE CHINA. LIFE SCIENCES 2024:10.1007/s11427-024-2695-x. [PMID: 39231902 DOI: 10.1007/s11427-024-2695-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 07/28/2024] [Indexed: 09/06/2024]
Abstract
T cells play a critical and irreplaceable role in maintaining overall health. However, their functions undergo alterations as individuals age. It is of utmost importance to comprehend the specific characteristics of T-cell aging, as this knowledge is crucial for gaining deeper insights into the pathogenesis of aging-related diseases and developing effective therapeutic strategies. In this review, we have thoroughly examined the existing studies on the characteristics of immune organ aging. Furthermore, we elucidated the changes and potential mechanisms that occur in T cells during the aging process. Additionally, we have discussed the latest research advancements pertaining to T-cell aging-related diseases. These findings provide a fresh perspective for the study of T cells in the context of aging.
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Affiliation(s)
- Yudai Xu
- Department of Microbiology and Immunology, School of Medicine; Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou, 510632, China
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, 510632, China
- Guangdong-Hong Kong-Macau Great Bay Area Geroscience Joint Laboratory, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Zijian Wang
- Department of Microbiology and Immunology, School of Medicine; Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou, 510632, China
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, 510632, China
- Guangdong-Hong Kong-Macau Great Bay Area Geroscience Joint Laboratory, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Shumin Li
- Department of Microbiology and Immunology, School of Medicine; Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou, 510632, China
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, 510632, China
- Guangdong-Hong Kong-Macau Great Bay Area Geroscience Joint Laboratory, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Jun Su
- First Affiliated Hospital, Jinan University, Guangzhou, 510630, China
| | - Lijuan Gao
- Department of Microbiology and Immunology, School of Medicine; Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou, 510632, China
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, 510632, China
- Guangdong-Hong Kong-Macau Great Bay Area Geroscience Joint Laboratory, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Junwen Ou
- Anti Aging Medical Center, Clifford Hospital, Guangzhou, 511495, China
| | - Zhanyi Lin
- Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China
| | - Oscar Junhong Luo
- Department of Systems Biomedical Sciences, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Chanchan Xiao
- Department of Microbiology and Immunology, School of Medicine; Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou, 510632, China.
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, 510632, China.
- Guangdong-Hong Kong-Macau Great Bay Area Geroscience Joint Laboratory, School of Medicine, Jinan University, Guangzhou, 510632, China.
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, 523000, China.
- Zhuhai Institute of Jinan University, Jinan University, Zhuhai, 519070, China.
| | - Guobing Chen
- Department of Microbiology and Immunology, School of Medicine; Institute of Geriatric Immunology, School of Medicine, Jinan University, Guangzhou, 510632, China.
- Key Laboratory of Viral Pathogenesis & Infection Prevention and Control (Jinan University), Ministry of Education, Guangzhou, 510632, China.
- Guangdong-Hong Kong-Macau Great Bay Area Geroscience Joint Laboratory, School of Medicine, Jinan University, Guangzhou, 510632, China.
- The Sixth Affiliated Hospital of Jinan University (Dongguan Eastern Central Hospital), Jinan University, Dongguan, 523000, China.
- Zhuhai Institute of Jinan University, Jinan University, Zhuhai, 519070, China.
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Cheng S, Jiang D, Lan X, Liu K, Fan C. Voltage-gated potassium channel 1.3: A promising molecular target in multiple disease therapy. Biomed Pharmacother 2024; 175:116651. [PMID: 38692062 DOI: 10.1016/j.biopha.2024.116651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/21/2024] [Accepted: 04/24/2024] [Indexed: 05/03/2024] Open
Abstract
Voltage-gated potassium channel 1.3 (Kv1.3) has emerged as a pivotal player in numerous biological processes and pathological conditions, sparking considerable interest as a potential therapeutic target across various diseases. In this review, we present a comprehensive examination of Kv1.3 channels, highlighting their fundamental characteristics and recent advancements in utilizing Kv1.3 inhibitors for treating autoimmune disorders, neuroinflammation, and cancers. Notably, Kv1.3 is prominently expressed in immune cells and implicated in immune responses and inflammation associated with autoimmune diseases and chronic inflammatory conditions. Moreover, its aberrant expression in certain tumors underscores its role in cancer progression. While preclinical studies have demonstrated the efficacy of Kv1.3 inhibitors, their clinical translation remains pending. Molecular imaging techniques offer promising avenues for tracking Kv1.3 inhibitors and assessing their therapeutic efficacy, thereby facilitating their development and clinical application. Challenges and future directions in Kv1.3 inhibitor research are also discussed, emphasizing the significant potential of targeting Kv1.3 as a promising therapeutic strategy across a spectrum of diseases.
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Affiliation(s)
- Sixuan Cheng
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Dawei Jiang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Xiaoli Lan
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Kun Liu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Cheng Fan
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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The SMML, Schreurs RRCE, Drewniak A, Bakx R, de Meij TGJ, Budding AE, Poort L, Cense HA, Heij HA, van Heurn LWE, Gorter RR, Bunders MJ. Enhanced Th17 responses in the appendix of children with complex compared to simple appendicitis are associated with microbial dysbiosis. Front Immunol 2024; 14:1258363. [PMID: 38239362 PMCID: PMC10794624 DOI: 10.3389/fimmu.2023.1258363] [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: 07/13/2023] [Accepted: 11/17/2023] [Indexed: 01/22/2024] Open
Abstract
Introduction Appendicitis is one of the most common causes of acute abdominal surgery in children. The clinical course of appendicitis ranges from simple to complex appendicitis. The mechanisms underlying the heterogeneity of appendicitis in children remain largely unclear. Dysregulated T cell responses play an important role in several inflammatory diseases of the intestine, but the extend of T cell dysregulation in appendicitis in children is less well known. Methods To characterize appendiceal T cells in simple and complex appendicitis we performed in-depth immunophenotyping of appendiceal-derived T cells by flow cytometry and correlated this to appendiceal-derived microbiota analyses of the same patient. Results Appendix samples of twenty children with appendicitis (n = 8 simple, n = 12 complex) were collected. T cells in complex appendicitis displayed an increased differentiated phenotype compared to simple appendicitis, including a loss of both CD27 and CD28 by CD4+ T cells and to a lesser extent by CD8+ T cells. Frequencies of phenotypic tissue-resident memory CD69+CD4+ T cells and CD69+CD8+ T cells were decreased in children with complex compared to simple appendicitis, indicating disruption of local tissue-resident immune responses. In line with the increased differentiated phenotype, cytokine production of in particular IL-17A by CD4+ T cells was increased in children with complex compared to simple appendicitis. Furthermore, frequencies of IL-17A+ CD4+ T cells correlated with a dysregulation of the appendiceal microbiota in children with complex appendicitis. Conclusion In conclusion, disruption of local T cell responses, and enhanced pro-inflammatory Th17 responses correlating to changes in the appendiceal microbiota were observed in children with complex compared to simple appendicitis. Further studies are needed to decipher the role of a dysregulated network of microbiota and Th17 cells in the development of complex appendicitis in children.
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Affiliation(s)
- Sarah-May M. L. The
- Department of Paediatric Surgery, Emma Children’s Hospital, Amsterdam University Medical Center (UMC), University of Amsterdam & Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Amsterdam Reproduction and Development Research Institute, Amsterdam, Netherlands
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Renée R. C. E. Schreurs
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Department of Paediatrics, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam & Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Agata Drewniak
- Department of Experimental Immunology, Amsterdam Infection & Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Roel Bakx
- Department of Paediatric Surgery, Emma Children’s Hospital, Amsterdam University Medical Center (UMC), University of Amsterdam & Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Amsterdam Reproduction and Development Research Institute, Amsterdam, Netherlands
- Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam, Netherlands
| | - Tim G. J. de Meij
- Amsterdam Reproduction and Development Research Institute, Amsterdam, Netherlands
- Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam, Netherlands
- Department of Paediatric Gastroenterology, Emma Children’s Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | | | | | - Huib A. Cense
- Department of Surgery, Red Cross Hospital, Beverwijk, Netherlands
| | - Hugo A. Heij
- Department of Paediatric Surgery, Emma Children’s Hospital, Amsterdam University Medical Center (UMC), University of Amsterdam & Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - L. W. Ernest van Heurn
- Department of Paediatric Surgery, Emma Children’s Hospital, Amsterdam University Medical Center (UMC), University of Amsterdam & Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Amsterdam Reproduction and Development Research Institute, Amsterdam, Netherlands
- Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam, Netherlands
| | - Ramon R. Gorter
- Department of Paediatric Surgery, Emma Children’s Hospital, Amsterdam University Medical Center (UMC), University of Amsterdam & Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Amsterdam Reproduction and Development Research Institute, Amsterdam, Netherlands
- Amsterdam Gastroenterology and Metabolism Research Institute, Amsterdam, Netherlands
| | - Madeleine J. Bunders
- Leibniz Institute of Virology, Hamburg, Germany
- Third Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Pappa A, Mührer J, Gast P, Hebbar Subramanyam S, Ohl K, Muschaweck M, Wagner N, Wenzl T, Tenbrock K. Pediatric IBD patients show medication and disease activity dependent changes in NK cell and CD4 memory T cell populations. Front Pediatr 2023; 11:1123873. [PMID: 37456566 PMCID: PMC10345343 DOI: 10.3389/fped.2023.1123873] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 06/14/2023] [Indexed: 07/18/2023] Open
Abstract
Objectives CD4+ memory T cells facilitate long-termed adaptive immune responses while NK cells are predominately rapid effector cells with significant functions for both intestinal homeostasis and inflammation. We wanted to study both populations in health and pediatric inflammatory bowel disease (IBD) and correlate them with disease activity and medication. Methods We performed flow cytometric analyses of peripheral blood CD4 + CD45RO+ memory T cells and CD3-CD16 + CD56+ NK cells in 30 patients with IBD and 31 age-matched controls and correlated percentages of subsets with disease activity (PUCAI/PCDAI) and medication. Results We found a significant reduction of peripheral NK cells in overall IBD patients with both clinical remission and disease activity, which was even more pronounced in patients treated with azathioprine. Otherwise, circulating CD4+ memory T cell populations were significantly enhanced in active IBD compared to controls. Enhancement of memory T cells was particularly found in new onset disease and correlated with disease activity scores. Discussion Our single center cohort confirms previous results showing enhanced memory T cell populations in pediatric IBD patients, which correlate with disease activity scores. CD4+ memory T cells are a relevant pathogenic leukocyte population for disease development and perpetuation in IBD. In addition, we found a decrease of NK cells in IBD patients, which was pronounced by use of azathioprine. Surveillance of both cellular populations could possibly serve as biomarker for therapy control in pediatric IBD.
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Affiliation(s)
- Angeliki Pappa
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
| | - Julia Mührer
- Department of Pediatrics, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Patricia Gast
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
| | | | - Kim Ohl
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
| | - Moritz Muschaweck
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
| | - Norbert Wagner
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
| | - Tobias Wenzl
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
| | - Klaus Tenbrock
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
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Lu Y, Ruan Y, Hong P, Rui K, Liu Q, Wang S, Cui D. T-cell senescence: A crucial player in autoimmune diseases. Clin Immunol 2023; 248:109202. [PMID: 36470338 DOI: 10.1016/j.clim.2022.109202] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/24/2022] [Accepted: 11/23/2022] [Indexed: 12/12/2022]
Abstract
Senescent T cells are proliferative disabled lymphocytes that lack antigen-specific responses. The development of T-cell senescence in autoimmune diseases contributes to immunological disorders and disease progression. Senescent T cells lack costimulatory markers with the reduction of T cell receptor repertoire and the uptake of natural killer cell receptors. Senescent T cells exert cytotoxic effects through the expression of perforin, granzymes, tumor necrosis factor, and other molecules without the antigen-presenting process. DNA damage accumulation, telomere damage, and limited DNA repair capacity are important features of senescent T cells. Impaired mitochondrial function and accumulation of reactive oxygen species contribute to T cell senescence. Alleviation of T-cell senescence could provide potential targets for the treatment of autoimmune diseases.
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Affiliation(s)
- Yinyun Lu
- Department of Infectious Diseases, Shaoxing People's Hospital, Shaoxing, China
| | - Yongchun Ruan
- Department of Infectious Diseases, Shaoxing People's Hospital, Shaoxing, China
| | - Pan Hong
- Department of Hematology, Shaoxing People's Hospital, Shaoxing, China
| | - Ke Rui
- Department of Transfusion, Shaoxing People's Hospital, Shaoxing, China
| | - Qi Liu
- Department of Laboratory Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, China.
| | - Shengjun Wang
- Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China; Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.
| | - Dawei Cui
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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IFN-γ + cytotoxic CD4 + T lymphocytes are involved in the pathogenesis of colitis induced by IL-23 and the food colorant Red 40. Cell Mol Immunol 2022; 19:777-790. [PMID: 35468944 PMCID: PMC9243055 DOI: 10.1038/s41423-022-00864-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/22/2022] [Indexed: 12/13/2022] Open
Abstract
The food colorant Red 40 is an environmental risk factor for colitis development in mice with increased expression of interleukin (IL)-23. This immune response is mediated by CD4+ T cells, but mechanistic insights into how these CD4+ T cells trigger and perpetuate colitis have remained elusive. Here, using single-cell transcriptomic analysis, we found that several CD4+ T-cell subsets are present in the intestines of colitic mice, including an interferon (IFN)-γ-producing subset. In vivo challenge of primed mice with Red 40 promoted rapid activation of CD4+ T cells and caused marked intestinal epithelial cell (IEC) apoptosis that was attenuated by depletion of CD4+ cells and blockade of IFN-γ. Ex vivo experiments showed that intestinal CD4+ T cells from colitic mice directly promoted apoptosis of IECs and intestinal enteroids. CD4+ T cell-mediated cytotoxicity was contact-dependent and required FasL, which promoted caspase-dependent cell death in target IECs. Genetic ablation of IFN-γ constrained IL-23- and Red 40-induced colitis development, and blockade of IFN-γ inhibited epithelial cell death in vivo. These results advance the understanding of the mechanisms regulating colitis development caused by IL-23 and food colorants and identify IFN-γ+ cytotoxic CD4+ T cells as a new potential therapeutic target for colitis.
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Abstract
A previously well 37-year-old woman attended the emergency assessment unit with symptoms of lethargy, breathlessness and peripheral oedema, whereby initial basic investigations revealed an iron deficiency anaemia and serum hypoalbuminaemia. The patient subsequently had multiple admissions to secondary care over a 2-year period due to worsening peripheral and central oedema. Investigations ruled out non-gastrointestinal causes of serum hypoalbuminaemia, such as renal, cardiac and hepatic failures. Gastrointestinal investigations later revealed raised faecal alpha-1 antitrypsin and small bowel ulceration on capsule endoscopy, with a histological diagnosis of Crohn's disease made after a small bowel wedge resection. This case describes the unusual presentation of Crohn's disease displaying symptoms primarily of protein-losing enteropathy, an uncommon and under-recognised consequence of inflammatory bowel disease. A review of current literature and the underlying pathophysiology for this rare condition are discussed, particularly in relation to Crohn's disease.
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Affiliation(s)
- Kate Edwards
- Gastroenterology, Nevill Hall Hospital, Abergavenny, UK
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Youssef SR, Elsalakawy WA. First report of expansion of CD4 +/CD28 null T-helper lymphocytes in adult patients with idiopathic autoimmune hemolytic anemia. Hematol Transfus Cell Ther 2020; 43:396-401. [PMID: 32709527 PMCID: PMC8572999 DOI: 10.1016/j.htct.2020.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/27/2020] [Indexed: 01/09/2023] Open
Abstract
CD28 null T helper (Th) cells are rare in healthy individuals, but they are increased in various inflammatory and immune-mediated diseases. In this study, we determined the size of the CD4+/CD28 null T lymphocyte compartment in the peripheral blood of 40 autoimmune hemolytic anemia (AIHA) patients (idiopathic and secondary) and 20 healthy control subjects, using tri-color flow cytometry. The frequency and absolute count of CD4+/CD28 null T helper (Th) cells was significantly higher in idiopathic AIHA patients, compared to healthy controls (p = 0.001 and 0.001, respectively) and to patients with secondary AIHA (p = 0.04 and 0.01, respectively). The percentage of CD4+/CD28 null Th cells was also negatively correlated to the hemoglobin (Hb) level (p = 0.03). These findings demonstrate, for the first time, the expansion of this phenotypically-defined population of T lymphocytes in patients with idiopathic AIHA and indicate that it likely plays an etiological role in the development of this disease. However, establishing the use of this marker for diagnosis or monitoring treatment of such patients needs further studies.
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Affiliation(s)
- Soha R Youssef
- Departments of Clinical Pathology, faculty of medicine, Ain Shams University, Cairo; Egypt
| | - Walaa A Elsalakawy
- Internal Medicine department, Clinical Hematology and BMT unit (2), faculty of medicine, Ain Shams University, Cairo; Egypt.
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Tajti G, Wai DCC, Panyi G, Norton RS. The voltage-gated potassium channel K V1.3 as a therapeutic target for venom-derived peptides. Biochem Pharmacol 2020; 181:114146. [PMID: 32653588 DOI: 10.1016/j.bcp.2020.114146] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 02/07/2023]
Abstract
The voltage-gated potassium channel KV1.3 is a well-established therapeutic target for a range of autoimmune diseases, in addition to being the site of action of many venom-derived peptides. Numerous studies have documented the efficacy of venom peptides that target KV1.3, in particular from sea anemones and scorpions, in animal models of autoimmune diseases such as rheumatoid arthritis, psoriasis and multiple sclerosis. Moreover, an analogue of the sea anemone peptide ShK (known as dalazatide) has successfully completed Phase 1 clinical trials in mild-to-moderate plaque psoriasis. In this article we consider other potential therapeutic applications of inhibitors of KV1.3, including in inflammatory bowel disease and neuroinflammatory conditions such as Alzheimer's and Parkinson's diseases, as well as fibrotic diseases. We also summarise strategies for facilitating the entry of peptides to the central nervous system, given that this will be a pre-requisite for the treatment of most neuroinflammatory diseases. Venom-derived peptides that have been reported recently to target KV1.3 are also described. The increasing number of autoimmune and other conditions in which KV1.3 is upregulated and is therefore a potential therapeutic target, combined with the fact that many venom-derived peptides are potent inhibitors of KV1.3, suggests that venoms are likely to continue to serve as a rich source of new pharmacological tools and therapeutic leads targeting this channel.
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Affiliation(s)
- Gabor Tajti
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Dorothy C C Wai
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Gyorgy Panyi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary.
| | - Raymond S Norton
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia; ARC Centre for Fragment-Based Design, Monash University, Parkville, VIC 3052, Australia.
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Greenberg SA. Inclusion body myositis: clinical features and pathogenesis. Nat Rev Rheumatol 2020; 15:257-272. [PMID: 30837708 DOI: 10.1038/s41584-019-0186-x] [Citation(s) in RCA: 146] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Inclusion body myositis (IBM) is often viewed as an enigmatic disease with uncertain pathogenic mechanisms and confusion around diagnosis, classification and prospects for treatment. Its clinical features (finger flexor and quadriceps weakness) and pathological features (invasion of myofibres by cytotoxic T cells) are unique among muscle diseases. Although IBM T cell autoimmunity has long been recognized, enormous attention has been focused for decades on several biomarkers of myofibre protein aggregates, which are present in <1% of myofibres in patients with IBM. This focus has given rise, together with the relative treatment refractoriness of IBM, to a competing view that IBM is not an autoimmune disease. Findings from the past decade that implicate autoimmunity in IBM include the identification of a circulating autoantibody (anti-cN1A); the absence of any statistically significant genetic risk factor other than the common autoimmune disease 8.1 MHC haplotype in whole-genome sequencing studies; the presence of a marked cytotoxic T cell signature in gene expression studies; and the identification in muscle and blood of large populations of clonal highly differentiated cytotoxic CD8+ T cells that are resistant to many immunotherapies. Mounting evidence that IBM is an autoimmune T cell-mediated disease provides hope that future therapies directed towards depleting these cells could be effective.
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Affiliation(s)
- Steven A Greenberg
- Department of Neurology, Brigham and Women's Hospital, Boston, MA, USA. .,Children's Hospital Computational Health Informatics Program, Boston Children's Hospital, Boston, MA, USA. .,Harvard Medical School, Boston, MA, USA.
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Luque-Campos N, Contreras-López RA, Jose Paredes-Martínez M, Torres MJ, Bahraoui S, Wei M, Espinoza F, Djouad F, Elizondo-Vega RJ, Luz-Crawford P. Mesenchymal Stem Cells Improve Rheumatoid Arthritis Progression by Controlling Memory T Cell Response. Front Immunol 2019; 10:798. [PMID: 31040848 PMCID: PMC6477064 DOI: 10.3389/fimmu.2019.00798] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 03/26/2019] [Indexed: 12/14/2022] Open
Abstract
In the last years, mesenchymal stem cell (MSC)-based therapies have become an interesting therapeutic opportunity for the treatment of rheumatoid arthritis (RA) due to their capacity to potently modulate the immune response. RA is a chronic autoimmune inflammatory disorder with an incompletely understood etiology. However, it has been well described that peripheral tolerance defects and the subsequent abnormal infiltration and activation of diverse immune cells into the synovial membrane, are critical for RA development and progression. Moreover, the imbalance between the immune response of pro-inflammatory and anti-inflammatory cells, in particular between memory Th17 and memory regulatory T cells (Treg), respectively, is well admitted to be associated to RA immunopathogenesis. In this context, MSCs, which are able to alter the frequency and function of memory lymphocytes including Th17, follicular helper T (Tfh) cells and gamma delta (γδ) T cells while promoting Treg cell generation, have been proposed as a candidate of choice for RA cell therapy. Indeed, given the plasticity of memory CD4+ T cells, it is reasonable to think that MSCs will restore the balance between pro-inflammatory and anti-inflammatory memory T cells populations deregulated in RA leading to prompt their therapeutic function. In the present review, we will discuss the role of memory T cells implicated in RA pathogenesis and the beneficial effects exerted by MSCs on the phenotype and functions of these immune cells abnormally regulated in RA and how this regulation could impact RA progression.
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Affiliation(s)
- Noymar Luque-Campos
- Laboratorio de Inmunología Celular y Molecular, Centro de Investigación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Rafael A Contreras-López
- Laboratorio de Inmunología Celular y Molecular, Centro de Investigación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - María Jose Paredes-Martínez
- Laboratorio de Inmunología Celular y Molecular, Centro de Investigación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Maria Jose Torres
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | | | - Mingxing Wei
- Cellvax, SAS, Parc BIOCITECH, Romainville, France
| | | | | | - Roberto Javier Elizondo-Vega
- Laboratorio de Biología Celular, Departamento de Biología Celular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Patricia Luz-Crawford
- Laboratorio de Inmunología Celular y Molecular, Centro de Investigación Biomédica, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
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Habiel DM, Espindola MS, Kitson C, Azzara AV, Coelho AL, Stripp B, Hogaboam CM. Characterization of CD28 null T cells in idiopathic pulmonary fibrosis. Mucosal Immunol 2019; 12:212-222. [PMID: 30315241 PMCID: PMC6301115 DOI: 10.1038/s41385-018-0082-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/02/2018] [Accepted: 08/08/2018] [Indexed: 02/04/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a fibrotic lung disease, with unknown etiopathogenesis and suboptimal therapeutic options. Previous reports have shown that increased T-cell numbers and CD28null phenotype is predictive of prognosis in IPF, suggesting that these cells might have a role in this disease. Flow cytometric analysis of explanted lung cellular suspensions showed a significant increase in CD8+ CD28null T cells in IPF relative to normal lung explants. Transcriptomic analysis of CD3+ T cells isolated from IPF lung explants revealed a loss of CD28-transcript expression and elevation of pro-inflammatory cytokine expression in IPF relative to normal T cells. IPF lung explant-derived T cells (enriched with CD28null T cells), but not normal donor lung CD28+ T cells induced dexamethasone-resistant lung remodeling in humanized NSG mice. Finally, CD28null T cells expressed similar CTLA4 and significantly higher levels of PD-1 proteins relative to CD28+ T cells and blockade of either proteins in humanized NSG mice, using anti-CTLA4, or anti-PD1, mAb treatment-accelerated lung fibrosis. Together, these results demonstrate that IPF CD28null T cells may promote lung fibrosis but the immune checkpoint proteins, CTLA-4 and PD-1, appears to limit this effect.
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Affiliation(s)
- David M Habiel
- Department of Medicine, Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA.
| | - Milena S Espindola
- Department of Medicine, Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Chris Kitson
- Bristol-Myers Squibb, Fibrosis Discovery Biology, Pennington, NJ, 08534, USA
| | - Anthony V Azzara
- Bristol-Myers Squibb, Fibrosis Discovery Biology, Pennington, NJ, 08534, USA
| | - Ana Lucia Coelho
- Department of Medicine, Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Barry Stripp
- Department of Medicine, Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Cory M Hogaboam
- Department of Medicine, Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA.
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13
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Sabzevary-Ghahfarokhi M, Shirzad H, Rafieian-Kopaei M, Ghatreh-Samani M, Shohan M. The Role of Inflammatory Cytokines in Creating T Cell Exhaustion in Cancer. Cancer Biother Radiopharm 2018; 33:267-273. [DOI: 10.1089/cbr.2018.2449] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Milad Sabzevary-Ghahfarokhi
- Department of Microbiology and Immunology, Faculty of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Hedayatollah Shirzad
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mahmoud Rafieian-Kopaei
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mahdi Ghatreh-Samani
- Cellular and Molecular Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mojtaba Shohan
- Department of Microbiology and Immunology, Faculty of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
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14
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Suskind DL, Kong D, Stevens A, Wahbeh G, Christie D, Baxter-Lowe LA, Muench MO. Maternal microchimerism in pediatric inflammatory bowel disease. CHIMERISM 2017; 2:50-4. [PMID: 21912719 DOI: 10.4161/chim.2.2.16556] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 06/05/2011] [Accepted: 06/05/2011] [Indexed: 01/08/2023]
Abstract
UNLABELLED Inflammatory bowel disease (IBD) shares many immunologic and clinical characteristics with graft versus host disease caused by allogeneic T lymphocytes after hematopoietic cell transplantation. Since maternal cells are known to enter the fetal circulation in a high proportion of pregnancies, we hypothesized that maternal engraftment in the fetus results in immune sequelae that can lead to IBD. METHOD The presence and extent of maternal microchimerism in tissues and blood samples from patients with Crohn's, Ulcerative colitis (UC), and control groups were determined using kinetic Polymerase Chain Reaction (kPCR) to detect maternal- and patient-specific HLA types. In addition, fluorescent in situ hybridization (FISH) was employed to detect maternal cells in biopsies from patients with IBD. RESULTS Using kPCR, maternal microchimerism was observed in 9 of the 16 (56%) patients with IBD and 6 out of 15 of the control group (40%) (P=NS). Five of 10 Crohn's patients had evidence of maternal microchimerism (50%) (P=NS). Four of six UC patients had evidence of maternal microchimerism in gut tissues (67%) (P=NS). There was no correlation between maternal michrochimerism and disease activity, disease location or granulomas in patients with IBD. Using FISH, five male Crohn's and five male UC patient's intestinal biopsies were analyzed for maternal microchimerism. No maternal cells were identified. CONCLUSION There is nothing in the data to suggest that patients with IBD differ from disease controls in their frequency of maternal microchimerism in either blood or gut mucosal tissues. These data suggest that maternal microchimerism in blood and biopsies is a relatively common phenomenon that has neither positive nor negative impact on IBD.
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Affiliation(s)
- David L Suskind
- Department of Pediatrics; Seattle Children's Hospital; University of Washington; Seattle, WA USA
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15
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Levitt DG, Levitt MD. Protein losing enteropathy: comprehensive review of the mechanistic association with clinical and subclinical disease states. Clin Exp Gastroenterol 2017; 10:147-168. [PMID: 28761367 PMCID: PMC5522668 DOI: 10.2147/ceg.s136803] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Protein losing enteropathy (PLE) has been associated with more than 60 different conditions, including nearly all gastrointestinal diseases (Crohn’s disease, celiac, Whipple’s, intestinal infections, and so on) and a large number of non-gut conditions (cardiac and liver disease, lupus, sarcoidosis, and so on). This review presents the first attempt to quantitatively understand the magnitude of the PLE in relation to the associated pathology for three different disease categories: 1) increased lymphatic pressure (e.g., lymphangiectasis); 2) diseases with mucosal erosions (e.g., Crohn’s disease); and 3) diseases without mucosal erosions (e.g., celiac disease). The PLE with lymphangiectasis results from rupture of the mucosal lymphatics, with retrograde drainage of systemic lymph into the intestinal lumen with the resultant loss of CD4 T cells, which is diagnostic. Mucosal erosion PLE results from macroscopic breakdown of the mucosal barrier, with the epithelial capillaries becoming the rate-limiting factor in albumin loss. The equation derived to describe the relationship between the reduction in serum albumin (CP) and PLE indicates that gastrointestinal albumin clearance must increase by at least 17 times normal to reduce the CP by half. The strengths and limitations of the two quantitative measures of PLE (51Cr-albumin or α1-antitrypsin [αAT] clearance) are reviewed. αAT provides a simple quantitative diagnostic test that is probably underused clinically. The strong, unexplained correlation between minor decreases in CP and subsequent mortality in seemingly healthy individuals raises the question of whether subclinical PLE could account for the decreased CP and, if so, could the mechanism responsible for PLE play a role in the increased mortality? A large-scale study correlating αAT clearance with serum albumin concentrations will be required in order to determine the role of PLE in the regulation of the serum albumin concentration of seemingly healthy subjects.
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Affiliation(s)
- David G Levitt
- Department of Integrative Biology and Physiology, University of Minnesota
| | - Michael D Levitt
- Research Service, Veterans Affairs Medical Center, Minneapolis, MN, USA
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16
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Timmermans WMC, van Laar JAM, van Hagen PM, van Zelm MC. Immunopathogenesis of granulomas in chronic autoinflammatory diseases. Clin Transl Immunology 2016; 5:e118. [PMID: 28090320 PMCID: PMC5192066 DOI: 10.1038/cti.2016.75] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 11/11/2016] [Accepted: 11/12/2016] [Indexed: 12/23/2022] Open
Abstract
Granulomas are clusters of immune cells. These structures can be formed in reaction to infection and display signs of necrosis, such as in tuberculosis. Alternatively, in several immune disorders, such as sarcoidosis, Crohn's disease and common variable immunodeficiency, non-caseating granulomas are formed without an obvious infectious trigger. Despite advances in our understanding of the human immune system, the pathogenesis underlying these non-caseating granulomas in chronic inflammatory diseases is still poorly understood. Here, we review the current knowledge about the immunopathogenesis of granulomas, and we discuss how the involved immune cells can be targeted with novel therapeutics.
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Affiliation(s)
- Wilhelmina Maria Cornelia Timmermans
- Department of Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
- Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Jan Alexander Michael van Laar
- Department of Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
- Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Petrus Martinus van Hagen
- Department of Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
- Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Menno Cornelis van Zelm
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
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17
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Söderberg-Nauclér C, Fornara O, Rahbar A. Cytomegalovirus driven immunosenescence-An immune phenotype with or without clinical impact? Mech Ageing Dev 2016; 158:3-13. [PMID: 27318107 DOI: 10.1016/j.mad.2016.06.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 06/13/2016] [Accepted: 06/14/2016] [Indexed: 11/30/2022]
Abstract
The continuous emerging increase in life span has led to vulnerability to a number of different diseases in the elderly. Some of these risks may be attributed to specific changes in the immune system referred to as immunoscenescence. This term aims to describe decreased immune functions among elderly individuals, and is characterized to be harmful age-associated changes in the immune system that lead to its gradual immune dysfunction. An impaired function of the immune system may increase susceptibility to various diseases in the elderly population such as infections, cardiovascular diseases and cancer. Although it is unclear how this immune phenotype develops, emerging evidence suggest that it may reflect an exhaustion of the immune system, possibly caused by one or several chronic infections. The main candidate is human cytomegalovirus (CMV), which can induce immune dysfunctions observed in immunoscenescence. Although the immune system is currently considered to be exhausted in CMV positive elderly individuals, it is not known whether such dysfunction of the immune system is a main reason for increased susceptibility to other diseases, or if direct effects of the virus in disease pathogenesis reflect the increased vulnerability to them. These aspects will be discussed in this review.
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Affiliation(s)
- Cecilia Söderberg-Nauclér
- Department of Medicine, Exp Cardiovascular Research Unit and Department of Neurology, Center for Molecular Medicine, Solna, Karolinska Institute, Stockholm, Sweden.
| | - Olesja Fornara
- Department of Medicine, Exp Cardiovascular Research Unit and Department of Neurology, Center for Molecular Medicine, Solna, Karolinska Institute, Stockholm, Sweden
| | - Afsar Rahbar
- Department of Medicine, Exp Cardiovascular Research Unit and Department of Neurology, Center for Molecular Medicine, Solna, Karolinska Institute, Stockholm, Sweden
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18
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Pandya JM, Loell I, Hossain MS, Zong M, Alexanderson H, Raghavan S, Lundberg IE, Malmström V. Effects of conventional immunosuppressive treatment on CD244+ (CD28null) and FOXP3+ T cells in the inflamed muscle of patients with polymyositis and dermatomyositis. Arthritis Res Ther 2016; 18:80. [PMID: 27039301 PMCID: PMC4818535 DOI: 10.1186/s13075-016-0974-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 03/14/2016] [Indexed: 12/12/2022] Open
Abstract
Background T-cell infiltrates may persist in muscle tissue of polymyositis (PM) and dermatomyositis (DM) patients despite aggressive immunosuppressive treatment. Here, we investigated to what extent persistent T cells in affected muscle were FOXP3+, a marker for regulatory T cells (Tregs), or CD244+, a marker for CD28null T cells, and whether their presence correlated to clinical outcome. The sensitivity of CD28null T cells towards glucocorticoid and Treg-mediated immunosuppression was also investigated. Methods Muscle biopsies from 16 newly diagnosed or untreated patients with PM/DM were investigated by immunohistochemistry for expression of CD3, FOXP3 and CD244 before and after treatment with glucocorticoids and immunosuppressive agents. For clinical evaluation, serum levels of creatine kinase, muscle performance (FI and MMT8), disease activity (MITAX) and disability (HAQ) were measured. In vitro suppressive effects of glucocorticoids and Tregs on T-cell activation were measured by CD69 upregulation. Results Before treatment, CD244+ cells were present at higher proportions compared to FOXP3+ cells in the inflamed muscle. Following treatment, FOXP3+ cell numbers decreased while CD244+ cells persisted. Patients with impaired muscle function (<75 % FI) post-treatment had higher levels of CD244+ cells in the follow-up biopsy compared to those with FI >75 %. MITAX and HAQ correlated with the number of CD244+ cells post-treatment. CD4+CD28null T cells displayed lower sensitivity towards both glucocorticoid and Treg-mediated immunosuppression in vitro compared to their CD28+ counterparts. Conclusions Poor outcome in patients with myositis following immunosuppressive therapy was linked to persistence of CD244+ (CD28null) T cells in muscle tissue, suggesting their resistance against immunosuppression. A relative loss of regulatory T cells could also contribute to poor clinical outcome given their recently ascribed role in muscle tissue regeneration.
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Affiliation(s)
- Jayesh M Pandya
- Rheumatology Unit, Department of Medicine, Center for Molecular Medicine, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Ingela Loell
- Rheumatology Unit, Department of Medicine, Center for Molecular Medicine, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Mohammad Shahadat Hossain
- Rheumatology Unit, Department of Medicine, Center for Molecular Medicine, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Mei Zong
- Rheumatology Unit, Department of Medicine, Center for Molecular Medicine, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Helene Alexanderson
- Department of NVS, Division of Physiotherapy, Solna, Karolinska Institutet, Huddinge and Physiotherapy Clinic, Karolinska University Hospital, Stockholm, Sweden
| | - Sukanya Raghavan
- Rheumatology Unit, Department of Medicine, Center for Molecular Medicine, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden.,Present address: Department of Microbiology and Immunology, Institute for Biomedicine, Gothenburg University, Gothenburg, Sweden
| | - Ingrid E Lundberg
- Rheumatology Unit, Department of Medicine, Center for Molecular Medicine, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Vivianne Malmström
- Rheumatology Unit, Department of Medicine, Center for Molecular Medicine, Karolinska University Hospital, Solna, Karolinska Institutet, Stockholm, Sweden.
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19
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Dumitriu IE. The life (and death) of CD4+ CD28(null) T cells in inflammatory diseases. Immunology 2015; 146:185-93. [PMID: 26190355 DOI: 10.1111/imm.12506] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 07/09/2015] [Accepted: 07/10/2015] [Indexed: 02/06/2023] Open
Abstract
Inflammation contributes to the development and perpetuation of several disorders and T lymphocytes orchestrate the inflammatory immune response. Although the role of T cells in inflammation is widely recognized, specific therapies that tackle inflammatory networks in disease are yet to be developed. CD4(+) CD28(null) T cells are a unique subset of helper T lymphocytes that recently shot back into the limelight as potential catalysts of inflammation in several inflammatory disorders such as autoimmunity, atherosclerosis and chronic viral infections. In contrast to conventional helper T cells, CD4(+) CD28(null) T cells have an inbuilt ability to release inflammatory cytokines and cytotoxic molecules that can damage tissues and amplify inflammatory pathways. It comes as no surprise that patients who have high numbers of these cells have more severe disease and poor prognosis. In this review, I provide an overview on the latest advances in the biology of CD4(+) CD28(null) T cells. Understanding the complex functions and dynamics of CD4(+) CD28(null) T cells may open new avenues for therapeutic intervention to prevent progression of inflammatory diseases.
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Affiliation(s)
- Ingrid E Dumitriu
- Cardiovascular and Cell Sciences Research Institute, St George's, University of London, London, UK
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20
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The story of CD4+ CD28- T cells revisited: solved or still ongoing? J Immunol Res 2015; 2015:348746. [PMID: 25834833 PMCID: PMC4365319 DOI: 10.1155/2015/348746] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Revised: 02/10/2015] [Accepted: 02/19/2015] [Indexed: 02/07/2023] Open
Abstract
CD4+CD28− T cells are a unique type of proinflammatory T cells characterised by blockade of costimulatory CD28 receptor expression at the transcriptional level, which is still reversible by IL-12. In healthy individuals older than 65 years, these cells may accumulate to up to 50% of total CD4+ T lymphocytes as in many immune-mediated diseases, immunodeficiency, and specific infectious diseases. Here we focus on CD4+CD28− T cells in chronic immune-mediated diseases, summarizing various phenotypic and functional characteristics, which vary depending on the underlying disease, disease activity, and concurrent treatment. CD4+CD28− T cells present as effector/memory cells with increased replicative history and oligoclonality but reduced apoptosis. As an alternative costimulatory signal instead of CD28, not only natural killer cell receptors and Toll-like receptors, but also CD47, CTLA-4, OX40, and 4-1BB have to be considered. The proinflammatory and cytotoxic capacities of these cells indicate an involvement in progression and maintenance of chronic immune-mediated disease. So far it has been shown that treatment with TNF-α blockers, abatacept, statins, and polyclonal antilymphocyte globulins (ATG) mediates reduction of the CD4+CD28− T cell level. The clinical relevance of targeting CD4+CD28− T cells as a therapeutic option has not been examined so far.
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21
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Hedin CR, McCarthy NE, Louis P, Farquharson FM, McCartney S, Taylor K, Prescott NJ, Murrells T, Stagg AJ, Whelan K, Lindsay JO. Altered intestinal microbiota and blood T cell phenotype are shared by patients with Crohn's disease and their unaffected siblings. Gut 2014; 63:1578-86. [PMID: 24398881 DOI: 10.1136/gutjnl-2013-306226] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Crohn's disease (CD) is associated with intestinal dysbiosis, altered blood T cell populations, elevated faecal calprotectin (FC) and increased intestinal permeability (IP). CD-associated features present in siblings (increased risk of CD) but not in healthy controls, provide insight into early CD pathogenesis. We aimed to (1) Delineate the genetic, immune and microbiological profile of patients with CD, their siblings and controls and (2) Determine which factors discriminate between groups. DESIGN Faecal microbiology was analysed by quantitative PCR targeting 16S ribosomal RNA, FC by ELISA, blood T cell phenotype by flow cytometry and IP by differential lactulose-rhamnose absorption in 22 patients with inactive CD, 21 of their healthy siblings and 25 controls. Subject's genotype relative risk was determined by Illumina Immuno BeadChip. RESULTS Strikingly, siblings shared aspects of intestinal dysbiosis with patients with CD (lower concentrations of Faecalibacterium prausnitzii (p=0.048), Clostridia cluster IV (p=0.003) and Roseburia spp. (p=0.09) compared with controls). As in CD, siblings demonstrated a predominance of memory T cells (p=0.002) and elevated naïve CD4 T cell β7 integrin expression (p=0.01) compared with controls. FC was elevated (>50 μg/g) in 8/21 (38%) siblings compared with 2/25 (8%) controls (p=0.028); whereas IP did not differ between siblings and controls. Discriminant function analysis determined that combinations of these factors significantly discriminated between groups (χ(2)=80.4, df=20, p<0.001). Siblings were separated from controls by immunological and microbiological variables. CONCLUSIONS Healthy siblings of patients with CD manifest immune and microbiological abnormalities associated with CD distinct from their genotype-related risk and provide an excellent model in which to investigate early CD pathogenesis.
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Affiliation(s)
- Charlotte R Hedin
- Diabetes and Nutritional Sciences Division, School of Medicine, King's College London, London, UK Centre for Digestive Diseases, Blizard Institute, Queen Mary University of London, London, UK
| | - Neil E McCarthy
- Centre for Digestive Diseases, Blizard Institute, Queen Mary University of London, London, UK
| | - Petra Louis
- Microbiology Group, Gut Health Theme, Rowett Institute of Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, UK
| | - Freda M Farquharson
- Microbiology Group, Gut Health Theme, Rowett Institute of Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, UK
| | - Sara McCartney
- Department for Gastroenterology and Clinical Nutrition, University College Hospitals NHS Foundation Trust, London, UK
| | - Kirstin Taylor
- Department of Medical and Molecular Genetics, King's College London, London, UK
| | - Natalie J Prescott
- Department of Medical and Molecular Genetics, King's College London, London, UK
| | - Trevor Murrells
- National Nursing Research Unit, Florence Nightingale School of Nursing and Midwifery, King's College London, London, UK
| | - Andrew J Stagg
- Centre for Immunology and Infectious Disease, Blizard Institute, Queen Mary University of London, London, UK
| | - Kevin Whelan
- Diabetes and Nutritional Sciences Division, School of Medicine, King's College London, London, UK
| | - James O Lindsay
- Centre for Digestive Diseases, Blizard Institute, Queen Mary University of London, London, UK Gastroenterology Division, Barts Health NHS Trust, London, UK
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Abstract
The approved treatment options for patients with ulcerative colitis (UC) are currently limited to mesalamine or immunosuppressants. Patients who do not respond to mesalamine-based therapy can be treated with immunomodulators or anti-TNF antibody therapy. Failure or adverse reactions to these medications leaves the patient with little choice other than colectomy. However, novel insights into the pathogenic drivers of UC have led to new developments in drugs that promise clinical efficacy via modulation of targeted pathways. Given the impending expansion of therapeutic options for patients with UC, clinicians and researchers should be familiar with these mechanisms of action. In addition, the typical 'step-up' treatment paradigm for UC will likely need to be reshaped to allow for a more personalized approach to treating UC.
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Increased prevalence of circulating novel IL-17 secreting Foxp3 expressing CD4+ T cells and defective suppressive function of circulating Foxp3+ regulatory cells support plasticity between Th17 and regulatory T cells in inflammatory bowel disease patients. Inflamm Bowel Dis 2013; 19:2522-34. [PMID: 24097227 DOI: 10.1097/mib.0b013e3182a85709] [Citation(s) in RCA: 161] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND IL-17 and Foxp3 double-expressing (DE) CD4(+) T lymphocytes are novel crossover immune cell population, but the presence and role of these cells in human intestinal inflammation is unclear. The aim of this study was to investigate the circulating IL-17 and Foxp3 DE CD4(+) T lymphocytes in patients with inflammatory bowel disease (IBD). METHODS The entire cohort consisted of 79 subjects: 31 patients with Crohn's disease, 28 patients with ulcerative colitis, and 20 healthy control subjects (HC). IBD patients with evidence of active disease at endoscopy were entered into the study. Peripheral blood mononuclear cells were used for ex vivo and in vitro studies to assess the characteristics and generation of these novel cells and the function of circulating Foxp3 CD4(+) regulatory T lymphocytes (Treg) in patients with IBD compared with HC. RESULTS Patients with IBD had significantly higher prevalence of IL-17 and Foxp3 DE CD4(+) T lymphocytes compared with age- and gender-matched HC. These cells expressed RORγt. The ability of Treg cells to suppress autologous T-cell proliferation was reduced by approximately 60% in patients with IBD compared with HC. Increased generation of these DE cells was demonstrated by the modulation of cytokine environment of CD4(+) lymphocytes in vitro in patients with Crohn's disease. CONCLUSIONS Prevalence of circulating IL-17 and Foxp3 DE CD4(+) T cells is increased in patients with IBD. Coexpression of RORγt and Foxp3 in these cells implies conversion from Treg cells to Th17 cells. This is associated with a decreased suppressive function of Foxp3 CD4(+) T lymphocytes in patients with IBD.
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Alterations in both the activatory and inhibitory potential of peripheral blood CD4+ T cells in rheumatoid arthritis patients correlate with disease progression. Pathol Oncol Res 2013; 20:235-43. [PMID: 24019115 PMCID: PMC3973952 DOI: 10.1007/s12253-013-9687-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 08/13/2013] [Indexed: 10/28/2022]
Abstract
The chronic nature of rheumatoid arthritis (RA) suggests immune dysfunction, including persistent systemic activation. Therefore, we evaluated the activatory and inhibitory potential as well as proliferative activity of peripheral blood (PB) CD4+ T cells from RA patients in different stages of the disease and after different therapeutic interventions. We found that CD4+ T cells from RA patients were activated in vivo concerning decreased CD28 expression and increase of CD40L, CD69, and CTLA-4 expression; however, the extent of stimulation was suboptimal when compared to healthy controls. Consequently, impaired proliferative activities of these cells were found in all patients irrespective of the active disease duration. Treatment with methotrexate (MTX) and/or inhibitors of TNF-alpha (iTNF) did not significantly influence systemic activation in RA patients, which corresponded with the maintenance of inflammation markers; however, partial restoration of CD28 and CTLA-4 expression as well as clinical improvement were observed. In patients with early disease (the MTX group), we noted higher capacity of CD4+ T cells for restoration of T cell function, whereas cells from the iTNF group with progressive disease remained with a proliferative defect after the treatment. In conclusion, our study demonstrates that the dysregulated expression of molecules interfering with CD4+ T cell signaling may result in functional impairment of the effector T cells and correlates with disease progression.
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Abstract
BACKGROUND Increasing evidence suggests that cytokine dysregulation in T-helper 1 and T-helper 2 (TH1/TH2) subsets contributes to the pathogenesis of Crohn disease (CD). The present pilot study examines the hypothesis that cytokine profiles differ between pediatric and adult patients with CD. METHODS Production of TH1 cytokines interferon-gamma (IFN-γ) and tumor necrosis factor-alpha (TNF-α) and of TH2 cytokines interleukin-4 (IL-4) and IL-6 was analyzed in peripheral blood of patients with CD and healthy controls (n=20) using flow cytometry after in vitro stimulation. RESULTS In both pediatric and adult subjects, frequencies of TNF-α CD4+ T cells were higher in patients with CD than in controls (P=0.009 and P=0.047, respectively). Percentages of cells expressing IL-4 were slightly increased (P=0.036), whereas those for IFN-γ were decreased (P=0.009) in pediatric patients with CD compared with controls. As expected, the overall production of TH1 cytokines was higher in adults compared with pediatric subjects. When memory CD4+CD45RO+ T cells were considered, lower IFN-γ expression was observed in pediatric subjects with CD compared with controls (P=0.009), matching the trend seen in the general CD4+ T cell population. The percentage of CD4+CD45RO+ T cells was increased in adult patients with CD compared with pediatric patients with CD (P=0.016). CONCLUSIONS The present study describes a peripheral blood TH1/TH2 cytokine imbalance in CD and suggests different immunological mechanisms in children and adults for disease pathogenesis.
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Pinto-Medel MJ, García-León JA, Oliver-Martos B, López-Gómez C, Luque G, Arnáiz-Urrutia C, Orpez T, Marín-Bañasco C, Fernández O, Leyva L. The CD4+ T-cell subset lacking expression of the CD28 costimulatory molecule is expanded and shows a higher activation state in multiple sclerosis. J Neuroimmunol 2012; 243:1-11. [PMID: 22261542 DOI: 10.1016/j.jneuroim.2011.11.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 11/15/2011] [Accepted: 11/16/2011] [Indexed: 11/30/2022]
Abstract
Multiple sclerosis (MS) is a chronic debilitating disease, in which T-cells are considered to play a pivotal role. CD28 is the quintessential costimulatory molecule on T-cells and its expression declines progressively with repeated stimulations, leading to the generation of CD28(-) T-cells. Our aim was to examine whether CD4(+)CD28(-) T-cells were enriched in MS patients, and characterize the phenotype of this subset in MS patients and healthy controls (HC). All these changes could provide these CD4(+)CD28(-) T-cell characteristics that might be involved in the pathogenesis of MS, turning this T-cell subset into a potential target for future therapeutic strategies.
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Affiliation(s)
- María Jesús Pinto-Medel
- Research Laboratory, Hospital Regional Universitario Carlos Haya and Fundación IMABIS, Málaga, Spain
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27
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Yokoyama Y, Fukunaga K, Ikeuchi H, Kamikozuru K, Hida N, Ohda Y, Iimuro M, Yoshida K, Kikuyama R, Kato K, Nagase K, Nakamura S, Miwa H, Matsumoto T. The CD4+CD28null and the regulatory CD4+CD25High T-cell phenotypes in patients with ulcerative colitis during active and quiescent disease, and following colectomy. Cytokine 2011; 56:466-70. [PMID: 21802311 DOI: 10.1016/j.cyto.2011.06.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 06/27/2011] [Indexed: 11/26/2022]
Abstract
The CD4+CD25High T-cell phenotype has an essential immunoregulatory role, while the CD4+CD28null T-cell reflects immune pathology. We investigated the profiles of the CD4+CD25High and the CD4+CD28null T-cell phenotypes in patients with ulcerative colitis (UC) during active and quiescent phases as well as following colectomy. Fifty-nine UC patients, 34 active (UCa) and 25 quiescent (UCq) together with 19 healthy controls (HC) were included. Ten of 34 UCa patients underwent colectomy due to unremitting UC (UCo). Immunohistochemical phenotypic of the peripheral blood lymphocytes bearing CD4, CD25 or CD28 was done for analyzes by a multiparameter fluorescence activated cell sorting technique. The expression of the CD4+CD25High phenotype was higher in UCq (P<0.01) or UCo (P<0.01) group vs UCa group. Further, the expression of the CD4+CD28null phenotype in UCa or UCo group was higher than in the HC group (P<0.05). However, the expression of the CD4+CD28null phenotype up to 12 months after colectomy was not significantly different from the levels in the same patients during acute phase. Our impression is that a high CD4+CD25High T-cell reflects alleviation of inflammation, while the expression of the CD4+CD28null T-cell phenotype is an etiologic feature in UC patients, and is maintained after removing the affected colon.
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Affiliation(s)
- Yoko Yokoyama
- Division of Lower Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan.
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Schmidmaier R, Then C, Schnabel B, Oduncu F, Baumann P, Straka C. CD4(+) CD28(+) lymphocytes on day 5 after high-dose melphalan for multiple myeloma predict a low risk of infections during severe neutropenia and are associated with the number of reinfused T lymphocytes of the autologous stem cell graft. Cytotherapy 2011; 13:987-92. [PMID: 21599548 DOI: 10.3109/14653249.2011.579960] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND AIMS Neutropenia following high-dose chemotherapy is associated with a substantial risk of infectious complications. The aim of this study was to identify variables in residual leukocyte subsets during neutropenia that are predictive for neutropenic fever. METHODS Residual leukocytes in the peripheral blood on day 5 after autologous blood stem cell transplantation were analyzed by three-color flow cytometry in 55 consecutive patients with multiple myeloma. Furthermore, the number of T cells transfused with the autografts was determined. RESULTS Neutrophil counts at day 5 and neutrophil engraftment were similar in patients with and without neutropenic fever. Low absolute lymphocyte, CD4(+) CD28(+) and CD45RO(+) CD28(+) counts at day 5 were associated with neutropenic fever. T-cell counts at day 5 correlated with the CD3(+) cell number in the graft. CONCLUSIONS Our data show that the absolute lymphocyte, CD4(+) CD28(+) and CD45RO(+) CD28(+) counts play a role in host defense during severe neutropenia. The T-cell number in the graft may help to identify patients at high risk of neutropenic infections.
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Affiliation(s)
- Ralf Schmidmaier
- Department of Haematology and Oncology, Medizinische Klinik Innenstadt, Klinikum der Universität München (LMU), Munich, Germany.
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Cseh A, Vasarhelyi B, Molnar K, Szalay B, Svec P, Treszl A, Dezsofi A, Lakatos PL, Arato A, Tulassay T, Veres G. Immune phenotype in children with therapy-naïve remitted and relapsed Crohn’s disease. World J Gastroenterol 2010; 16:6001-9. [PMID: 21157977 PMCID: PMC3007111 DOI: 10.3748/wjg.v16.i47.6001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To characterize the prevalence of subpopulations of CD4+ cells along with that of major inhibitor or stimulator cell types in therapy-naïve childhood Crohn’s disease (CD) and to test whether abnormalities of immune phenotype are normalized with the improvement of clinical signs and symptoms of disease.
METHODS: We enrolled 26 pediatric patients with CD. 14 therapy-naïve CD children; of those, 10 children remitted on conventional therapy and formed the remission group. We also tested another group of 12 children who relapsed with conventional therapy and were given infliximab; and 15 healthy children who served as controls. The prevalence of Th1 and Th2, naïve and memory, activated and regulatory T cells, along with the members of innate immunity such as natural killer (NK), NK-T, myeloid and plasmocytoid dendritic cells (DCs), monocytes and Toll-like receptor (TLR)-2 and TLR-4 expression were determined in peripheral blood samples.
RESULTS: Children with therapy-naïve CD and those in relapse showed a decrease in Th1 cell prevalence. Simultaneously, an increased prevalence of memory and activated lymphocytes along with that of DCs and monocytes was observed. In addition, the ratio of myeloid /plasmocytoid DCs and the prevalence of TLR-2 or TLR-4 positive DCs and monocytes were also higher in therapy-naïve CD than in controls. The majority of alterations diminished in remitted CD irrespective of whether remission was obtained by conventional or biological therapy.
CONCLUSION: The finding that immune phenotype is normalized in remission suggests a link between immune phenotype and disease activity in childhood CD. Our observations support the involvement of members of the adaptive and innate immune systems in childhood CD.
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Pandya JM, Fasth AER, Zong M, Arnardottir S, Dani L, Lindroos E, Malmström V, Lundberg IE. Expanded T cell receptor Vβ-restricted T cells from patients with sporadic inclusion body myositis are proinflammatory and cytotoxic CD28null T cells. ACTA ACUST UNITED AC 2010; 62:3457-66. [PMID: 20662057 DOI: 10.1002/art.27665] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Sporadic inclusion body myositis (IBM) is characterized by T cell infiltrates in muscle tissue, but their functional role is unclear. Systemic signs of inflammation are lacking, and the absence of beneficial effects following immunosuppression has challenged the notion of a role for the immune system. This study was undertaken to investigate the phenotype and functionality of T cells, specifically a subset of proinflammatory, cytotoxic, and apoptosis-resistant T cells defined as CD28(null) T cells, in the pathogenesis of sporadic IBM. METHODS A cohort of 27 patients with sporadic IBM was analyzed for the frequency of circulating and muscle-infiltrating CD28(null) T cells. The T cell receptor (TCR) V(β) usage was determined using flow cytometry and immunohistochemistry. Anti-CD3-stimulated peripheral blood mononuclear cells were analyzed for intracellular interferon-γ and cytotoxic potential by flow cytometry. RESULTS We found striking accumulations of both CD8+CD28(null) and CD4+CD28(null) T cells, which represented the TCR V(β) -expanded T cells in sporadic IBM. Such CD28(null) T cells were abundant both in the inflamed muscle tissue and in the circulation. Although the specific TCR V(β) expansions varied between patients, both CD8+CD28(null) and CD4+CD28(null) T cells consistently displayed a highly proinflammatory and cytotoxic potential. CONCLUSION Our results suggest that CD28null T cell expansions represent the previously described expanded T cell subsets in sporadic IBM, and their proinflammatory capacity and presence in both muscle tissue and the circulation may imply a role of immune activation in sporadic IBM. In addition, CD4+CD28(null) T cells may exert cytotoxic effects directly on muscle fibers due to a cytotoxic potential similar to that in CD8+ T cells.
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Affiliation(s)
- Jayesh M Pandya
- Rheumatology Unit, Karolinska University Hospital, Stockholm, Sweden.
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31
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Eastwood D, Findlay L, Poole S, Bird C, Wadhwa M, Moore M, Burns C, Thorpe R, Stebbings R. Monoclonal antibody TGN1412 trial failure explained by species differences in CD28 expression on CD4+ effector memory T-cells. Br J Pharmacol 2010; 161:512-26. [PMID: 20880392 PMCID: PMC2990151 DOI: 10.1111/j.1476-5381.2010.00922.x] [Citation(s) in RCA: 196] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Revised: 03/26/2010] [Accepted: 03/30/2010] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND PURPOSE In 2006, a life-threatening 'cytokine storm', not predicted by pre-clinical safety testing, rapidly occurred in all six healthy volunteers during the phase I clinical trial of the CD28 superagonist monoclonal antibody (mAb) TGN1412. To date, no unequivocal explanation for the failure of TGN1412 to stimulate profound cytokine release in vitro or in vivo in species used for pre-clinical safety testing has been established. Here, we have identified a species difference almost certainly responsible for this disparate immunopharmacology. EXPERIMENTAL APPROACH Polychromatic flow cytometry and intracellular cytokine staining were employed to dissect the in vitro immunopharmacology of TGN1412 and other therapeutic mAbs at the cellular level to identify differences between humans and species used for pre-clinical safety testing. KEY RESULTS In vitro IL-2 and IFN-γ release from CD4+ effector memory T-cells were key indicators of a TGN1412-type response. This mechanism of cytokine release differed from that of other therapeutic mAbs, which can cause adverse reactions, because these other mAbs stimulate cytokine release primarily from natural killer cells. In contrast to humans, CD28 is not expressed on the CD4+ effector memory T-cells of all species used for pre-clinical safety testing, so cannot be stimulated by TGN1412. CONCLUSIONS AND IMPLICATIONS It is likely that activation of CD4+ effector memory T-cells by TGN1412 was responsible for the cytokine storm. Lack of CD28 expression on the CD4+ effector memory T-cells of species used for pre-clinical safety testing of TGN1412 offers an explanation for the failure to predict a 'cytokine storm' in humans.
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Affiliation(s)
- D Eastwood
- Biotherapeutics Group, NIBSC, Potters Bar, Hertfordshire, UK
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32
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Fasth AER, Dastmalchi M, Rahbar A, Salomonsson S, Pandya JM, Lindroos E, Nennesmo I, Malmberg KJ, Söderberg-Nauclér C, Trollmo C, Lundberg IE, Malmström V. T cell infiltrates in the muscles of patients with dermatomyositis and polymyositis are dominated by CD28null T cells. THE JOURNAL OF IMMUNOLOGY 2009; 183:4792-9. [PMID: 19752224 DOI: 10.4049/jimmunol.0803688] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Dermatomyositis and polymyositis are disabling rheumatic diseases characterized by an appreciable number of T cells infiltrating muscle tissue. The precise phenotype, function and specificity of these cells remain elusive. In this study, we aimed to characterize T cells in muscle tissue and circulation and to investigate their association to clinical phenotype. Twenty-four patients with dermatomyositis and 42 with polymyositis were screened for frequency of CD4+CD28(null) and CD8+CD28(null) T cells in peripheral blood by flow cytometry. Presence of these cells in inflamed muscle tissue from 13 of these patients was analyzed by three-color immunofluorescence microscopy. Effector functions, proliferation and Ag specificity were analyzed by flow cytometry after in vitro stimulation. The clinical relevance of CD28(null) T cells was analyzed by multiple regression analyses including six separate and combined disease variables. We demonstrate that muscle-infiltrating T cells are predominantly CD4+CD28(null) and CD8+CD28(null) T cells in patients with dermatomyositis and polymyositis. Muscle-infiltrating CD28(null) T cells were found already at time of diagnosis. Disease activity correlated with the frequency of CD8+ T cells in the inflamed muscles of polymyositis patients. Circulating CD4+CD28(null) and CD8+CD28(null) T cells were significantly more frequent in human CMV (HCMV) seropositive individuals, responded to HCMV Ag stimulation, and correlated with disease duration. These cells also display a proinflammatory cytokine profile, contain perforin and lack the costimulatory molecule CD28. Our observations imply that CD28(null) T cells represent clinically important effector cells in dermatomyositis and polymyositis, and that HCMV might play a role in propagating disease in a subset of patients.
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Affiliation(s)
- Andreas E R Fasth
- Rheumatology Unit, Center for Molecular Medicine L8:04, Karolinska University Hospital, Stockholm S-171 76, Sweden.
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33
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Level of circulating CD4+ 28null cells in chronic inflammatory diseases: an important marker in predicting acute coronary events? Rheumatol Int 2009; 30:429-30. [PMID: 19575203 DOI: 10.1007/s00296-009-1028-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2009] [Accepted: 06/21/2009] [Indexed: 10/20/2022]
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34
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van Bergen J, Kooy-Winkelaar EMC, van Dongen H, van Gaalen FA, Thompson A, Huizinga TWJ, Feltkamp MCW, Toes REM, Koning F. Functional killer Ig-like receptors on human memory CD4+ T cells specific for cytomegalovirus. THE JOURNAL OF IMMUNOLOGY 2009; 182:4175-82. [PMID: 19299715 DOI: 10.4049/jimmunol.0800455] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Although very few CD4(+) T cells express killer Ig receptors (KIR), a large proportion of CD4(+) T cells with a late memory phenotype, characterized by the absence of CD28, does express KIR. Here, we show that KIR expression on CD4(+) T cells is also associated with memory T cell function, by showing that the frequency of CMV-specific cells is higher in CD4(+)KIR(+) than CD4(+)KIR(-) T cells. In addition, engagement of an inhibitory KIR inhibited the CMV-specific proliferation of these CD4(+)KIR(+) memory T cells, but had no detectable effect on cytokine production. Our data reveal that, in marked contrast with CD8(+) T cells, the activity of a subset of CMV-specific CD4(+) T cells is modulated by HLA class I-specific KIR. Thus, the CMV-induced down-regulation of HLA class I may in fact enhance memory CMV-specific CD4(+) T cell responses restricted by HLA class II.
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Affiliation(s)
- Jeroen van Bergen
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, the Netherlands.
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35
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Dumitriu IE, Araguás ET, Baboonian C, Kaski JC. CD4+ CD28 null T cells in coronary artery disease: when helpers become killers. Cardiovasc Res 2008; 81:11-9. [PMID: 18818214 DOI: 10.1093/cvr/cvn248] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The crucial role of T cells in atherosclerosis and coronary artery disease (CAD) has been highlighted by recent observations. Helper CD4(+) T cells can both aggravate or attenuate the atherogenic process and the development of CAD. CD4(+)CD28(null) T cells are an unusual subset of helper cells which expand and have deleterious effects in CAD. In this review, we discuss the current issues on the generation of CD4(+)CD28(null) T cells and focus on their phenotypic and functional characteristics relevant to the development of cardiovascular events. The possible effects of the present day therapies for CAD on the CD4(+)CD28(null) T cells are also explored. Targeting the CD4(+)CD28(null) T cell subset in CAD could provide novel therapeutic strategies to prevent acute life-threatening coronary events.
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Affiliation(s)
- Ingrid E Dumitriu
- Cardiovascular Biology Research Centre, Division of Cardiac and Vascular Sciences, St George's University of London, Cranmer Terrace, London SW17 0RE, UK
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36
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Miyazaki Y, Iwabuchi K, Kikuchi S, Fukazawa T, Niino M, Hirotani M, Sasaki H, Onoé K. Expansion of CD4+CD28- T cells producing high levels of interferon-{gamma} in peripheral blood of patients with multiple sclerosis. Mult Scler 2008; 14:1044-55. [PMID: 18573819 DOI: 10.1177/1352458508092809] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
CD4(+) T cells that lack surface expression of the CD28 co-stimulatory molecule (CD4(+)CD28(-) T cells) were expanded in peripheral blood of patients with multiple sclerosis (MS) [5.20 +/- 1.67% vs 13.00 +/- 2.68% (healthy controls (HC) versus patients with MS)]. Both the CD4(+)CD28(+) and CD4(+)CD28(-) T-cell populations of patients with MS produced higher levels of interferon (IFN)-gamma compared with those in HC. In particular, the proportion of IFN-gamma(+) cells among CD4(+)CD28(-) T cells from patients with MS was considerably high. However, expression of co-stimulatory molecules including inducible costimulator (ICOS), activating natural killer receptors, or members of tumor necrosis factor receptor family that replace CD28 in CD4(+)CD28(-) T cells of patients with MS could not be identified. A unique subpopulation bearing the CD45RA(high)CCR7(-) phenotype was identified among the CD4(+)CD28(-) T cells of some patients with MS. Because only MS samples contained this CD45RA(high)CCR7(-) population attributed to terminally differentiated effector memory cells and lacked naive CD45RA(high)CCR7(+) cells, we suggest that CD4(+)CD28(-) T cells of patients with MS represent a cell population which is in more differentiated state than healthy subjects. In patients treated with IFN-beta-1b, IFN-gamma production from CD4(+)CD28(+) T cells was suppressed compared with that in untreated patients. On the contrary, in the CD4(+)CD28(-) population, production of IFN-gamma in IFN-beta-1b-treated patients was not significantly suppressed compared with that in untreated patients with MS. Thus, an additional treatment strategy that specifically targets this cell population may enhance the beneficial effect of IFN-beta on MS.
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Affiliation(s)
- Y Miyazaki
- Division of Immunobiology, Research Section of Pathophysiology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
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37
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Yokoyama Y, Fukunaga K, Fukuda Y, Tozawa K, Kamikozuru K, Ohnishi K, Kusaka T, Kosaka T, Hida N, Ohda Y, Miwa H, Matsumoto T. Demonstration of low-regulatory CD25High+CD4+ and high-pro-inflammatory CD28-CD4+ T-Cell subsets in patients with ulcerative colitis: modified by selective granulocyte and monocyte adsorption apheresis. Dig Dis Sci 2007; 52:2725-31. [PMID: 17404876 DOI: 10.1007/s10620-006-9560-z] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2006] [Accepted: 08/03/2006] [Indexed: 12/12/2022]
Abstract
Low-CD25(High+)CD4(+), a subset of regulatory CD25(+)CD4(+) T cells and high-inflammatory CD28(-)CD4(+) T cells can exacerbate ulcerative colitis (UC). This study sought to investigate the frequency of CD25(High+)CD4(+) and CD28(-)CD4(+) T cells in patients with UC and the changes in these cells during Adacolumn granulocyte and monocyte adsorption apheresis (GMA). Subjects were 12 patients with active UC, 11 with quiescent UC, and 14 healthy volunteers (HVs). The mean clinical activity index was 15.7 +/- 2.2 in active UC and 4.5 +/- 1.1 in quiescent UC. Peripheral blood samples were stained with CD4, CD25, and CD28 antibodies for flow cytometry. Patients with active UC received GMA and blood samples were examined before and after the first GMA session. Patients with active UC (P < 0.04) or quiescent UC (P < 0.02) had a higher percentage of CD28(-)D4(+)T cells compared with HVs, while the percentage of CD28(+)CD4(+) T cells was lower in both UC groups compared with HVs (P = 0.03 and P < 0.02). Patients with active UC had a lower percentage of CD25(High+)CD4(+)T cells compared with quiescent UC patients (P < 0.001). A significant increase in CD25(High+)CD4(+) T cells was associated with GMA (P < 0.03). Low CD25(High+)CD4(+) and high CD28(-)CD4(+) are prominent features in UC. The increase in CD25(High+)CD4(+) T cells induced by GMA should contribute to improved immune function. Additional studies are warranted, since a low frequency of CD25(High+)CD4(+) (-) and a high frequency of CD28(-)CD4(+) (-) expressing T cells might be a predictor of clinical response to GMA.
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Affiliation(s)
- Yoko Yokoyama
- Division of Lower Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
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38
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Yamada H, Kaibara N, Okano S, Maeda T, Shuto T, Nakashima Y, Okazaki K, Iwamoto Y. Interleukin-15 selectively expands CD57+CD28−CD4+ T cells, which are increased in active rheumatoid arthritis. Clin Immunol 2007; 124:328-35. [PMID: 17644042 DOI: 10.1016/j.clim.2007.06.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 06/04/2007] [Accepted: 06/05/2007] [Indexed: 11/25/2022]
Abstract
Proinflammatory cytokines as well as CD4(+) T cells play critical roles in the pathogenesis of rheumatoid arthritis (RA). Recently, an increase of CD57(+) or CD28(-)CD4(+) T cells was demonstrated in RA, although the mechanism of the increase of these T cells is unclear. In this study, we first examined the relationship between CD57(+)CD4(+) T cells and CD28(-)CD4(+) T cells and found CD57(+)CD28(-)CD4(+) T cells, but neither CD57(+)CD28(+) nor CD57(-)CD28(+) cells, expanded in the peripheral blood of active RA. In vitro experiments revealed that CD57(+)CD28(-)CD4(+) T cells selectively expanded in response to IL-15. Furthermore IL-15-stimulated CD57(+)CD28(-)CD4(+) T cells induced TNF-alpha production from monocytes. These results suggest that CD57(+)CD28(-)CD4(+) T cells are involved in the pathogenesis of RA by responding to IL-15.
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Affiliation(s)
- Hisakata Yamada
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
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39
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Allez M, Tieng V, Nakazawa A, Treton X, Pacault V, Dulphy N, Caillat-Zucman S, Paul P, Gornet JM, Douay C, Ravet S, Tamouza R, Charron D, Lémann M, Mayer L, Toubert A. CD4+NKG2D+ T cells in Crohn's disease mediate inflammatory and cytotoxic responses through MICA interactions. Gastroenterology 2007; 132:2346-58. [PMID: 17570210 DOI: 10.1053/j.gastro.2007.03.025] [Citation(s) in RCA: 163] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2006] [Accepted: 02/21/2007] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Crohn's disease (CD) is an inflammatory bowel disease characterized by uncontrolled immune responses to bacterial flora, with excessive activation of T lymphocytes. MICA is a stress-induced major histocompatibility complex-related molecule expressed on normal intestinal epithelial cells (IECs) and recognized by the NKG2D-activating receptor on CD8(+) T cells, gammadelta T cells, and natural killer cells. We examined the role of MICA-NKG2D interactions in the activation of T lymphocytes in CD. METHODS MICA expression was analyzed by flow cytometry on IECs isolated from patients with active inflammatory bowel disease and controls. NKG2D expression and function were analyzed on lamina propria and peripheral blood lymphocytes. RESULTS MICA expression was significantly increased on IECs in CD, with higher expression in macroscopically involved areas. A subset of CD4(+) T cells expressing NKG2D was increased in the lamina propria from patients with CD compared with controls and patients with ulcerative colitis. CD4(+)NKG2D(+) T cells with a Th1 cytokine profile and expressing perforin were increased in the periphery and in the mucosa in CD. CD4(+)NKG2D(+) T-cell clones were functionally active through MICA-NKG2D interactions, producing interferon-gamma and killing targets expressing MICA. IECs from patients with CD had the ability to expand this subset in vitro. CD4(+)NKG2D(+) lamina propria lymphocytes from patients with CD highly expressed interleukin-15R alpha, and interleukin-15 increased NKG2D and DAP10 expression in CD4(+)NKG2D(+) T-cell clones. CONCLUSIONS These findings highlight the role of MICA-NKG2D in the activation of a unique subset of CD4(+) T cells with inflammatory and cytotoxic properties in CD.
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Affiliation(s)
- Matthieu Allez
- Service de Gastroentérologie, Hôpital Saint-Louis, Paris, France; INSERM Unité 662, Hôpital Saint-Louis, Paris, France.
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40
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Böhm I, Willinek W, Schild HH. Magnetic resonance imaging meets immunology: an unusual combination of diagnostic tools leads to the diagnosis actinomycosis. Am J Gastroenterol 2006; 101:2439-40. [PMID: 17032212 DOI: 10.1111/j.1572-0241.2006.00742_7.x] [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: 12/11/2022]
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41
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García de Tena J, Manzano L, Leal JC, San Antonio E, Sualdea V, Alvarez-Mon M. Distinctive pattern of cytokine production and adhesion molecule expression in peripheral blood memory CD4+ T cells from patients with active Crohn's disease. J Clin Immunol 2006; 26:233-42. [PMID: 16783463 DOI: 10.1007/s10875-006-9016-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2006] [Accepted: 02/09/2006] [Indexed: 10/24/2022]
Abstract
An expansion of both circulating and intestinal lamina propria CD4+ CD45RO+ T cells has been described in patients with Crohn's disease. We studied both the cytokine profile and the expression of adhesion molecules on this T-cell subset. Peripheral blood CD4+ CD45RO+ T cells from patients with Crohn's disease (n=45) were assessed by flow cytometry and RT-PCR methods. The cytokine profile was also measured in intestinal lamina propria from seven patients. They were classified according to the CDAI and the results were compared with those of patients with ulcerative colitis (n=21) and noninflammatory intestinal conditions (n=15), and healthy controls (n=39). The mean percentage of circulating CD4+ CD45RO+ T cells producing intracellular TNF was higher in active than in inactive Crohn's disease patients (p < 0.001), active (p = 0.49) and inactive ulcerative colitis (p = 0.019), and healthy controls (p =0. 017). TNF expression correlated with CDAI (p < 0.001). An increased expression of intracellular IL-2, IL-6, and IL-10 in active Crohn's disease patients was also found. CD62L was downregulated in active Crohn's disease patients while no differences were observed in CD49d and CD11a expression. Lamina propria CD4+ CD45RO+ T cells from active Crohn's disease lesions showed an increased intracellular staining of TNF, IFN-gamma, and IL-10. Both peripheral and intestinal mucosa CD4+ CD45RO+ T cells from active Crohn's disease patients show an increased production of TNF. In addition, the circulating CD4+ CD45RO+ T-cell subset expresses a pattern of adhesion molecules that promotes homing to extranodal lymphoid tissues. This T-cell subset may play a relevant role in the immunopathogenesis of Crohn's disease.
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Affiliation(s)
- Jaime García de Tena
- Laboratorio de Inmunología Clínica y Oncología, Unidad asociada I+D del Consejo Superior de Investigaciones Científicas, Departamento de Medicina, Universidad de Alcalá, Alcalá de Henares, Spain
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Abstract
Multiple sclerosis is a chronic inflammatory autoimmune disease of the central nervous system characterized by demyelination and axonal damage that result in disabling neurological deficits. Here the authors explain the rationale for the use of inhibitors of the Kv1.3 K+ channel in immune cells as a therapy for multiple sclerosis and other autoimmune disorders.
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Affiliation(s)
- Christine Beeton
- Department of Physiology and Biophysics, Medical School, University of California, Irvine, 92697, USA
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Bryl E, Vallejo AN, Matteson EL, Witkowski JM, Weyand CM, Goronzy JJ. Modulation of CD28 expression with anti-tumor necrosis factor alpha therapy in rheumatoid arthritis. ACTA ACUST UNITED AC 2005; 52:2996-3003. [PMID: 16200579 DOI: 10.1002/art.21353] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The immune system of patients with rheumatoid arthritis (RA) is characterized by the accumulation of CD4+ T cells deficient in CD28 expression and the up-regulation of tumor necrosis factor alpha (TNFalpha). Previous in vitro studies have shown that TNFalpha induces transcriptional silencing of the CD28 gene. Because reduced expression of CD28 in T cells compromises immunocompetence, we examined whether CD28 expression is reduced in patients with RA in vivo and whether the reduction is related to TNFalpha. METHODS Patients with RA and age-matched individuals were recruited. Peripheral blood mononuclear cells were stained for CD3, CD4, CD8, CD28, TNF receptor I (TNFRI), and TNFRII, and analyzed by quantitative flow cytometry. The number of CD28 and TNFR molecules was monitored in a subgroup of patients with RA undergoing treatment with anti-TNFalpha. RESULTS In addition to higher frequencies of CD28null T cells, patients with RA had significantly reduced numbers of CD28 and TNFRI molecules on CD4+,CD28+ T cells. Normal expression could be restored in vitro by overnight culture, suggesting that CD28 in patients was modulated by exogenous factors. In contrast, treatment with TNFalpha in vitro resulted in further down-regulation. CD28 expression was normalized in patients undergoing TNFalpha-neutralizing therapy. CONCLUSION Overproduction of TNFalpha in RA induces a global down-regulation of CD28 in CD4+ T cells and may cause reduced sensitivity to costimulatory signals in T cell responses.
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Affiliation(s)
- Ewa Bryl
- Mayo Clinic College of Medicine, Rochester, Minnesota, USA
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van Bergen J, Thompson A, van der Slik A, Ottenhoff THM, Gussekloo J, Koning F. Phenotypic and Functional Characterization of CD4 T Cells Expressing Killer Ig-Like Receptors. THE JOURNAL OF IMMUNOLOGY 2004; 173:6719-26. [PMID: 15557164 DOI: 10.4049/jimmunol.173.11.6719] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Killer Ig-like receptors (KIR) are commonly found on human NK cells, gammadelta T cells, and CD8 T cells. Although KIR(+) CD4 T cells are found in certain patients, their prevalence in healthy donors is controversial. We now provide definitive proof that such cells are present in most individuals, and report on their frequency, surface phenotype, cytokine profile, and Ag specificity. The number of KIR(+) CD4 T cells detected in peripheral blood increased with age. In contrast with regular KIR(-) CD4 T cells, the majority of KIR(+) CD4 T cells lacked surface expression of CD27, CD28, CCR4, and CCR7, but did express CD57 and 2B4. In addition, KIR were detected on approximately one-tenth of CD28(-) and CD57(+) memory CD4 T cells. In line with the absence of the Th2 marker CCR4, the KIR(+) CD4 cells produced mainly IFN-gamma and little IL-4, IL-10, or IL-17 upon TCR triggering. Furthermore, the KIR(+) population contained cells that responded to recall Ags in an HLA class II-restricted fashion. Together, our data indicate that KIR-expressing CD4 T cells are predominantly HLA class II-restricted effector memory Th1 cells, and that a significant, previously unrecognized fraction of effector memory Th1 cells expresses KIR.
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Affiliation(s)
- Jeroen van Bergen
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
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