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Sun F, Yang CL, Wang FX, Rong SJ, Luo JH, Lu WY, Yue TT, Wang CY, Liu SW. Pancreatic draining lymph nodes (PLNs) serve as a pathogenic hub contributing to the development of type 1 diabetes. Cell Biosci 2023; 13:156. [PMID: 37641145 PMCID: PMC10464122 DOI: 10.1186/s13578-023-01110-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 08/21/2023] [Indexed: 08/31/2023] Open
Abstract
Type 1 diabetes (T1D) is a chronic, progressive autoinflammatory disorder resulting from the breakdown of self-tolerance and unrestrained β cell-reactive immune response. Activation of immune cells is initiated in islet and amplified in lymphoid tissues, especially those pancreatic draining lymph nodes (PLNs). The knowledge of PLNs as the hub of aberrant immune response is continuously being replenished and renewed. Here we provide a PLN-centered view of T1D pathogenesis and emphasize that PLNs integrate signal inputs from the pancreas, gut, viral infection or peripheral circulation, undergo immune remodeling within the local microenvironment and export effector cell components into pancreas to affect T1D progression. In accordance, we suggest that T1D intervention can be implemented by three major ways: cutting off the signal inputs into PLNs (reduce inflammatory β cell damage, enhance gut integrity and control pathogenic viral infections), modulating the immune activation status of PLNs and blocking the outputs of PLNs towards pancreatic islets. Given the dynamic and complex nature of T1D etiology, the corresponding intervention strategy is thus required to be comprehensive to ensure optimal therapeutic efficacy.
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Affiliation(s)
- Fei Sun
- Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China
- NHC Key Laboratory of Respiratory Diseases, Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun-Liang Yang
- NHC Key Laboratory of Respiratory Diseases, Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fa-Xi Wang
- NHC Key Laboratory of Respiratory Diseases, Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shan-Jie Rong
- NHC Key Laboratory of Respiratory Diseases, Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia-Hui Luo
- NHC Key Laboratory of Respiratory Diseases, Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wan-Ying Lu
- NHC Key Laboratory of Respiratory Diseases, Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tian-Tian Yue
- Devision of Nutrition, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cong-Yi Wang
- Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China.
- NHC Key Laboratory of Respiratory Diseases, Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Shi-Wei Liu
- Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, China.
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2
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Abdelgalil AA, Alkahtani HM. Crizotinib: A comprehensive profile. PROFILES OF DRUG SUBSTANCES, EXCIPIENTS AND RELATED METHODOLOGY 2023; 48:39-69. [PMID: 37061275 DOI: 10.1016/bs.podrm.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Crizotinib, approved in 2011, was the first approved inhibitor targeting anaplastic lymphoma kinase (ALK) It used for treatment of the patients with metastatic non-small cell lung cancer (NSCLC) that is anaplastic lymphoma kinase (ALK) positive. This chapter provides a complete review of crizotinib including nomenclature, physiochemical properties, methods of preparation, identification techniques and various qualitative and quantitative analytical techniques as well as pharmacology of crizotinib. In addition, the chapter also includes review of several methods for separation of crizotinib using chromatographic techniques.
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3
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Lindsay RS, Whitesell JC, Dew KE, Rodriguez E, Sandor AM, Tracy D, Yannacone SF, Basta BN, Jacobelli J, Friedman RS. MERTK on mononuclear phagocytes regulates T cell antigen recognition at autoimmune and tumor sites. J Exp Med 2021; 218:e20200464. [PMID: 34415994 PMCID: PMC8383814 DOI: 10.1084/jem.20200464] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/04/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022] Open
Abstract
Understanding mechanisms of immune regulation is key to developing immunotherapies for autoimmunity and cancer. We examined the role of mononuclear phagocytes during peripheral T cell regulation in type 1 diabetes and melanoma. MERTK expression and activity in mononuclear phagocytes in the pancreatic islets promoted islet T cell regulation, resulting in reduced sensitivity of T cell scanning for cognate antigen in prediabetic islets. MERTK-dependent regulation led to reduced T cell activation and effector function at the disease site in islets and prevented rapid progression of type 1 diabetes. In human islets, MERTK-expressing cells were increased in remaining insulin-containing islets of type 1 diabetic patients, suggesting that MERTK protects islets from autoimmune destruction. MERTK also regulated T cell arrest in melanoma tumors. These data indicate that MERTK signaling in mononuclear phagocytes drives T cell regulation at inflammatory disease sites in peripheral tissues through a mechanism that reduces the sensitivity of scanning for antigen leading to reduced responsiveness to antigen.
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Affiliation(s)
- Robin S. Lindsay
- Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
- Department of Biomedical Research, National Jewish Health, Denver, CO
| | - Jennifer C. Whitesell
- Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
- Department of Biomedical Research, National Jewish Health, Denver, CO
- Barbara Davis Center for Diabetes, Aurora, CO
| | - Kristen E. Dew
- Department of Biomedical Research, National Jewish Health, Denver, CO
| | - Erika Rodriguez
- Department of Biomedical Research, National Jewish Health, Denver, CO
- Barbara Davis Center for Diabetes, Aurora, CO
| | - Adam M. Sandor
- Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
- Department of Biomedical Research, National Jewish Health, Denver, CO
| | - Dayna Tracy
- Department of Biomedical Research, National Jewish Health, Denver, CO
| | - Seth F. Yannacone
- Department of Biomedical Research, National Jewish Health, Denver, CO
| | | | - Jordan Jacobelli
- Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
- Department of Biomedical Research, National Jewish Health, Denver, CO
- Barbara Davis Center for Diabetes, Aurora, CO
| | - Rachel S. Friedman
- Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
- Department of Biomedical Research, National Jewish Health, Denver, CO
- Barbara Davis Center for Diabetes, Aurora, CO
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4
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Shi Z, Li Y, Jaberi-Douraki M. Hybrid computational modeling demonstrates the utility of simulating complex cellular networks in type 1 diabetes. PLoS Comput Biol 2021; 17:e1009413. [PMID: 34570760 PMCID: PMC8496846 DOI: 10.1371/journal.pcbi.1009413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 10/07/2021] [Accepted: 09/01/2021] [Indexed: 11/29/2022] Open
Abstract
Persistent destruction of pancreatic β-cells in type 1 diabetes (T1D) results from multifaceted pancreatic cellular interactions in various phase progressions. Owing to the inherent heterogeneity of coupled nonlinear systems, computational modeling based on T1D etiology help achieve a systematic understanding of biological processes and T1D health outcomes. The main challenge is to design such a reliable framework to analyze the highly orchestrated biology of T1D based on the knowledge of cellular networks and biological parameters. We constructed a novel hybrid in-silico computational model to unravel T1D onset, progression, and prevention in a non-obese-diabetic mouse model. The computational approach that integrates mathematical modeling, agent-based modeling, and advanced statistical methods allows for modeling key biological parameters and time-dependent spatial networks of cell behaviors. By integrating interactions between multiple cell types, model results captured the individual-specific dynamics of T1D progression and were validated against experimental data for the number of infiltrating CD8+T-cells. Our simulation results uncovered the correlation between five auto-destructive mechanisms identifying a combination of potential therapeutic strategies: the average lifespan of cytotoxic CD8+T-cells in islets; the initial number of apoptotic β-cells; recruitment rate of dendritic-cells (DCs); binding sites on DCs for naïve CD8+T-cells; and time required for DCs movement. Results from therapy-directed simulations further suggest the efficacy of proposed therapeutic strategies depends upon the type and time of administering therapy interventions and the administered amount of therapeutic dose. Our findings show modeling immunogenicity that underlies autoimmune T1D and identifying autoantigens that serve as potential biomarkers are two pressing parameters to predict disease onset and progression.
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Affiliation(s)
- Zhenzhen Shi
- 1DATA Consortium, Kansas State University Olathe, Olathe, Kansas, United States of America
- Department of Mathematics, Kansas State University, Manhattan, Kansas, United States of America
| | - Yang Li
- Laboratory of Immunology and Nanomedicine, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Science, Shenzhen, China
| | - Majid Jaberi-Douraki
- 1DATA Consortium, Kansas State University Olathe, Olathe, Kansas, United States of America
- Department of Mathematics, Kansas State University, Manhattan, Kansas, United States of America
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5
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Baeten P, Van Zeebroeck L, Kleinewietfeld M, Hellings N, Broux B. Improving the Efficacy of Regulatory T Cell Therapy. Clin Rev Allergy Immunol 2021; 62:363-381. [PMID: 34224053 PMCID: PMC8256646 DOI: 10.1007/s12016-021-08866-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2021] [Indexed: 12/11/2022]
Abstract
Autoimmunity is caused by an unbalanced immune system, giving rise to a variety of organ-specific to system disorders. Patients with autoimmune diseases are commonly treated with broad-acting immunomodulatory drugs, with the risk of severe side effects. Regulatory T cells (Tregs) have the inherent capacity to induce peripheral tolerance as well as tissue regeneration and are therefore a prime candidate to use as cell therapy in patients with autoimmune disorders. (Pre)clinical studies using Treg therapy have already established safety and feasibility, and some show clinical benefits. However, Tregs are known to be functionally impaired in autoimmune diseases. Therefore, ex vivo manipulation to boost and stably maintain their suppressive function is necessary when considering autologous transplantation. Similar to autoimmunity, severe coronavirus disease 2019 (COVID-19) is characterized by an exaggerated immune reaction and altered Treg responses. In light of this, Treg-based therapies are currently under investigation to treat severe COVID-19. This review provides a detailed overview of the current progress and clinical challenges of Treg therapy for autoimmune and hyperinflammatory diseases, with a focus on recent successes of ex vivo Treg manipulation.
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Affiliation(s)
- Paulien Baeten
- Neuro-Immune Connections and Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium.,University MS Center, Campus Diepenbeek, Diepenbeek, Belgium
| | - Lauren Van Zeebroeck
- University MS Center, Campus Diepenbeek, Diepenbeek, Belgium.,VIB Laboratory of Translational Immunomodulation, Center for Inflammation Research (IRC), Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Markus Kleinewietfeld
- University MS Center, Campus Diepenbeek, Diepenbeek, Belgium.,VIB Laboratory of Translational Immunomodulation, Center for Inflammation Research (IRC), Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Niels Hellings
- Neuro-Immune Connections and Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium.,University MS Center, Campus Diepenbeek, Diepenbeek, Belgium
| | - Bieke Broux
- Neuro-Immune Connections and Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium. .,University MS Center, Campus Diepenbeek, Diepenbeek, Belgium. .,Department of Internal Medicine, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands.
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6
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Tan W, Zhang B, Liu X, Zhang C, Liu J, Miao Q. Interleukin-33-Dependent Accumulation of Regulatory T Cells Mediates Pulmonary Epithelial Regeneration During Acute Respiratory Distress Syndrome. Front Immunol 2021; 12:653803. [PMID: 33936076 PMCID: PMC8082076 DOI: 10.3389/fimmu.2021.653803] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/09/2021] [Indexed: 01/17/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) triggered mostly by infection, is a syndrome that involves respiratory failure. ARDS induces strong local infiltration of regulatory T cells (Treg cells) in the lungs, and Treg cells were recently highlighted as being related to the repair of various tissue. However, at present, there is still a lack of adequate evidence showing the impact of Treg cells on pulmonary regeneration during ARDS. Here, we verified that Treg cells are strongly induced in ARDS mice and Treg depletion results in impaired lung repair. Moreover, Treg cells show high expression of ST2, a cellular receptor for the tissue alarmin IL-33, which is strongly upregulated in the lung during ARDS. In addition, we demonstrated that IL-33 signaling is crucial for Treg cell accumulation, and ST2-blocked mice show a decrease in the Treg cell population. Critically, transfer of exogenous IL-33 into Treg depleted mice restored Treg cells and facilitated lung regeneration by promoting alveolar type II cell (AEC2) recovery in ARDS, with elevated neutrophils infiltration and upregulated TGF-β1 release. These results emphasized the importance of IL-33 in accelerating the expansion of pulmonary Treg cells and promoting their activity to mediate pulmonary epithelial regeneration during ARDS in a TGF-β1-dependent manner.
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Affiliation(s)
- Wen Tan
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Bohan Zhang
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xinpei Liu
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chaoji Zhang
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jianzhou Liu
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qi Miao
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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7
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Passos MEP, Borges L, dos Santos-Oliveira LC, Alecrim-Zeza AL, Lobato TB, de Oliveira HH, Santos CMM, Diniz VLS, Iser-Bem PN, Manoel R, Murata GM, Hirabara SM, Curi R, Pithon-Curi TC, Hatanaka E, Gorjao R. Recreational Dance Practice Modulates Lymphocyte Profile and Function in Diabetic Women. Int J Sports Med 2020; 42:749-759. [DOI: 10.1055/a-1309-2037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AbstractThis study aimed to investigate the impact of a 16-week dance-based aerobic exercise program on lymphocyte function in healthy and type 2 diabetes mellitus (T2DM) women. We enrolled 23 women: 11 with T2DM and 12 non-diabetic controls. Initially, we performed anthropometry and body composition measurements, afterwards, plasma levels of C-reactive protein, lipids, and glucose were determined. We used flow cytometry to measure the CD25 and CD28 expression in circulating lymphocytes, T-regulatory (Treg) cell percentage, lymphocyte proliferation, and cytokines released by cultured lymphocytes. The T2DM group had a lower proportion of CD28+ cells and a higher percentage of Treg lymphocytes and proliferative capacity at the baseline compared with the control group. After 16 weeks of the program, differences in lymphocytes between the T2DM and the control groups disappeared. The dance program promoted IL-10 increase in both groups. We found decreased IL-4, IL-2, and IL-6 secretion in lymphocytes from the control group and increased IL-17 secretion and IL-10/IL-17 ratio in the T2DM group after the program. The program promoted marked changes in lymphocytes in diabetic women, leading to a balance between the different profiles.
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Affiliation(s)
- Maria Elizabeth Pereira Passos
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
- Department of Laboratory Medicine, Universidade Federal de São Paulo, Sao Paulo, Brazil
| | - Leandro Borges
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | | | | | - Tiago Bertola Lobato
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | | | | | | | | | - Richelieau Manoel
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Gilson Masahiro Murata
- Department of Medical Clinic, Sao Paulo University Faculty of Medicine, Sao Paulo, Brazil
| | - Sandro Massao Hirabara
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Rui Curi
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
- Butantan Institute, Sao Paulo, Brazil
| | | | - Elaine Hatanaka
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Renata Gorjao
- Interdisciplinary Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
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8
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Wang G, Yan Y, Xu N, Yin D, Hui Y. Treatment of type 1 diabetes by regulatory T‐cell infusion via regulating the expression of inflammatory cytokines. J Cell Biochem 2019; 120:19338-19344. [PMID: 31535398 DOI: 10.1002/jcb.27875] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 09/21/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Guofeng Wang
- Department of Endocrinology, The Affiliated Lianyungang Hospital of Xuzhou Medical University, The First People's Hospital of Lianyungang, Lianyungang Clinical College of Nanjing Medical University The Affiliated Hospital of Kangda College of Nanjing Medical University Jiangsu China
| | - Yongxin Yan
- Department of Gastrointestinal Surgery, The Affiliated Lianyungang Hospital of Xuzhou Medical University, The First People's Hospital of Lianyungang, Lianyungang Clinical College of Nanjing Medical University The Affiliated Hospital of Kangda College of Nanjing Medical University Jiangsu China
| | - Ning Xu
- Department of Endocrinology, The Affiliated Lianyungang Hospital of Xuzhou Medical University, The First People's Hospital of Lianyungang, Lianyungang Clinical College of Nanjing Medical University The Affiliated Hospital of Kangda College of Nanjing Medical University Jiangsu China
| | - Dong Yin
- Department of Endocrinology, The Affiliated Lianyungang Hospital of Xuzhou Medical University, The First People's Hospital of Lianyungang, Lianyungang Clinical College of Nanjing Medical University The Affiliated Hospital of Kangda College of Nanjing Medical University Jiangsu China
| | - Yuan Hui
- Department of Endocrinology, The Affiliated Lianyungang Hospital of Xuzhou Medical University, The First People's Hospital of Lianyungang, Lianyungang Clinical College of Nanjing Medical University The Affiliated Hospital of Kangda College of Nanjing Medical University Jiangsu China
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9
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Christoffersson G, von Herrath M. Regulatory Immune Mechanisms beyond Regulatory T Cells. Trends Immunol 2019; 40:482-491. [DOI: 10.1016/j.it.2019.04.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 02/07/2023]
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10
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Tan W, Zhang C, Liu J, Miao Q. Regulatory T-cells promote pulmonary repair by modulating T helper cell immune responses in lipopolysaccharide-induced acute respiratory distress syndrome. Immunology 2019; 157:151-162. [PMID: 30919408 DOI: 10.1111/imm.13060] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 03/07/2019] [Accepted: 03/21/2019] [Indexed: 12/29/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) induces a strong local infiltration of regulatory T-cells (Tregs) in the lungs. However, at present, there remains a lack of adequate evidence showing the direct effect of Tregs on pulmonary repair and the related mechanisms of ARDS. Therefore, in this project, we studied the impact of Tregs on lipopolysaccharide (LPS)-induced ARDS and pulmonary inflammation. Surprisingly, we found that depletion of Tregs by injection of PC61 anti-CD25 antibody not only interfered with the inflammation resolution, such as inhibited total cell infiltration into the alveolar space, downregulated neutrophils, upregulated macrophages, but also impaired pulmonary epithelium and endothelial cell proliferation. Consistent with the attenuation of pulmonary repair, we found that the Th1 and Th17 immune responses were also impaired in Treg-depleted mice, suggesting that the presence of Tregs is vital for tissue repair, as Tregs modulate and promote the Th immune response in LPS-induced pulmonary inflammation.
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Affiliation(s)
- Wen Tan
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chaoji Zhang
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jianzhou Liu
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qi Miao
- Department of Cardiac Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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11
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Previte DM, Piganelli JD. Reactive Oxygen Species and Their Implications on CD4 + T Cells in Type 1 Diabetes. Antioxid Redox Signal 2018; 29:1399-1414. [PMID: 28990401 DOI: 10.1089/ars.2017.7357] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Previous work has indicated that type 1 diabetes (T1D) pathology is highly driven by reactive oxygen species (ROS). One way in which ROS shape the autoimmune response demonstrated in T1D is by promoting CD4+ T cell activation and differentiation. As CD4+ T cells are a significant contributor to pancreatic β cell destruction in T1D, understanding how ROS impact their development, activation, and differentiation is critical. Recent Advances: CD4+ T cells themselves generate ROS via nicotinamide adenine dinucleotide phosphate (NADPH) oxidase expression and electron transport chain activity. Moreover, T cells can also be exposed to exogenous ROS generated by other immune cells (e.g., macrophages and dendritic cells) and β cells. Genetically modified animals and ROS inhibitors have demonstrated that ROS blockade during activation results in CD4+ T cell hyporesponsiveness and reduced diabetes incidence. Critical Issues and Future Directions: Although the majority of studies with regard to T1D and CD4+ T cells have been done to examine the influence of redox on CD4+ T cell activation, this is not the only circumstance in which a T cell can be impacted by redox. ROS and redox have also been shown to play roles in CD4+ T cell-related tolerogenic mechanisms, including thymic selection and regulatory T cell-mediated suppression. However, the effect of these mechanisms with respect to T1D pathogenesis remains elusive. Therefore, pursuing these avenues may provide valuable insight into the global role of ROS and redox in autoreactive CD4+ T cell formation and function.
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Affiliation(s)
- Dana M Previte
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center , Pittsburgh, Pennsylvania
| | - Jon D Piganelli
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center , Pittsburgh, Pennsylvania
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12
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Choi B, Kim SH. Regulatory T Cells Promote Pancreatic Islet Function and Viability via TGF-β1 in vitro and in vivo. KOREAN JOURNAL OF CLINICAL LABORATORY SCIENCE 2018. [DOI: 10.15324/kjcls.2018.50.3.304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Bongkum Choi
- Transplantation Research Center, Clinical Research Institute, Samsung Biomedical Research Institute, Seoul, Korea
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sa-Hyun Kim
- Department of Clinical Laboratory Science, Semyung University, Jecheon, Korea
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13
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Abstract
CD4+CD25highFoxP3+ T regulatory cells (Tregs) are immunodominant suppressors in the immune system. Tregs use various mechanisms to control immune responses. Preclinical data from animal models have confirmed the huge therapeutic potential of Tregs in many immune-mediated diseases. Hence, these cells are now on the road to translation to cell therapy in the clinic as the first clinical trials are accomplished. To date, clinical research has involved mainly hematopoietic stem cell transplantations, solid organ transplantations, and autoimmunity. Despite difficulties with legislation and technical issues, treatment is constantly evolving and may soon represent a valid alternative for patients with diseases that are currently incurable. This review focuses on the basic and clinical experience with Tregs with adoptive transfer of these cells, primarily from clinical trials, as well as on perspectives on clinical use and technical problems with implementing the therapy.
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14
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Comorbidity of Type 1 Diabetes Mellitus in Patients with Juvenile Idiopathic Arthritis. J Pediatr 2018; 192:196-203. [PMID: 29246341 DOI: 10.1016/j.jpeds.2017.07.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/02/2017] [Accepted: 07/26/2017] [Indexed: 12/26/2022]
Abstract
OBJECTIVES To determine the prevalence of type 1 diabetes mellitus (T1D) in patients with juvenile idiopathic arthritis (JIA) and to characterize patients having both. STUDY DESIGN Diabetes comorbidity was recorded in the National Pediatric Rheumatologic Database since 2012. Data from the North Rhine-Westphalian diabetes registry served as the reference population for the prevalence of diabetes in the general population. The National Pediatric Rheumatologic Database data were indirectly standardized for age and sex for comparison with the general population. The diabetes prevalence ratio was calculated using the Poisson regression model. RESULTS The analysis included 12 269 patients with JIA. A total of 58 patients had comorbid T1D, and the diabetes prevalence was 0.5%. The mean age was 11.6 years at the time of documentation, and the mean disease duration was 4.2 years. Compared with the general population, the prevalence of diabetes in patients with JIA was significantly increased (prevalence ratio 1.76 [95% CI 1.34; 2.28], P < .001). The onset of diabetes in patients with JIA was earlier than that reported in the reference data. Sixty-three percent of patients developed T1D before JIA. On average, diabetes onset was 56 months before the onset of JIA. Patients who first developed JIA developed T1D on average 40 months later. The majority of patients had not received disease-modifying antirheumatic drugs before diabetes onset. CONCLUSIONS T1D occurs more frequently in patients with JIA than in the general population. The likelihood of T1D occurrence appears to be slightly higher before JIA manifestation and without disease-modifying antirheumatic drug therapy after JIA onset.
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15
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Huang D, Wang Y, Hawthorne WJ, Hu M, Hawkes J, Burns H, Davies S, Gao F, Chew YV, Yi S, O'Connell PJ. Ex vivo-expanded baboon CD39 + regulatory T cells prevent rejection of porcine islet xenografts in NOD-SCID IL-2rγ -/- mice reconstituted with baboon peripheral blood mononuclear cells. Xenotransplantation 2017; 24. [PMID: 28963731 DOI: 10.1111/xen.12344] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 07/05/2017] [Accepted: 08/14/2017] [Indexed: 12/25/2022]
Abstract
BACKGROUND A high immunosuppressive burden is required for long-term islet xenograft survival in non-human primates even using genetically modified donor pigs. AIMS We aimed to investigate the capacity of baboon regulatory T cells (Treg) to suppress islet xenograft rejection, thereby developing a potential immunoregulatory or tolerance therapy that could be evaluated in NHP models of xenotransplantation. MATERIALS & METHODS Baboon Treg expanded with stimulation by porcine peripheral blood mononuclear cells (PBMC) were characterized by cell phenotyping and suppressive activity assays in vitro. Their function in vivo was evaluated in neonatal porcine islet cell clusters (NICC) transplanted NOD-SCID IL-2rγ-/- (NSG) mice receiving baboon PBMC alone or with expanded autologous Treg. RESULTS The majority of expanded Treg coexpressed Foxp3 and CD39 and were highly suppressive of the baboon anti-pig xenogeneic T cell response in vitro. Reconstitution of mice with baboon PBMC alone resulted in NICC xenograft rejection within 35 days. Cotransfer with baboon PBMC and Treg prolonged islet xenograft survival beyond 100 days, correlating with Treg engraftment, intragraft CD39 and Foxp3 gene expression, and reduced graft infiltrating effector T cells and reduced interferon-γ production. DISCUSSION & CONCLUSION Our data supports the capacity of ex vivo expanded CD39+ baboon Treg to suppress islet xenograft rejection in primatized mice, suggesting it has potential as an adjunctive immunotherapy in preclinical NHP models of xenotransplantation.
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Affiliation(s)
- Dandan Huang
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Ya Wang
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Wayne J Hawthorne
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Min Hu
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Joanne Hawkes
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Heather Burns
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Sussan Davies
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Feng Gao
- Cell Transplantation and Gene Therapy, 3rd Xiangya Hospital of Central South University, Changsha, China
| | - Yi Vee Chew
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Shounan Yi
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
| | - Philip J O'Connell
- Centre for Transplant and Renal Research, Westmead Millennium Institute, University of Sydney, Westmead, NSW, Australia
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16
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Regulatory T-cells from pancreatic lymphnodes of patients with type-1 diabetes express increased levels of microRNA miR-125a-5p that limits CCR2 expression. Sci Rep 2017; 7:6897. [PMID: 28761107 PMCID: PMC5537269 DOI: 10.1038/s41598-017-07172-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 06/21/2017] [Indexed: 12/17/2022] Open
Abstract
Autoimmune type 1 diabetes (T1D) is thought to be caused by a defective immune regulation with regulatory T (Treg) cells playing a fundamental role in this process. Tolerance mechanisms depend on tunable responses that are sensitive to minor perturbations in the expression of molecules that can be carried out by multiple epigenetic mechanisms, including regulation by microRNAs. In this study, microRNA expression profile was investigated in Treg cells isolated from peripheral blood (PB) and from pancreatic draining lymph nodes (PLN) of T1D patients and non-diabetic subjects. Among 72 microRNAs analyzed, miR-125a-5p resulted specifically hyper-expressed in Treg cells purified from PLN of T1D patients. TNFR2 and CCR2 were identified as miR-125a-5p target genes. Elevated miR-125a-5p was detected in Treg cells isolated from PLN but not from PB of donors with T1D and was associated with reduced CCR2 expression. A specific beta-cell expression of the CCR2-ligand (CCL2) was observed in the pancreata of cadaveric donors, suggesting that beta-cells are prone to attract CCR2+ Treg cells. These novel data propose a mechanism, occurring in PLNs of T1D patients, involving increased expression of miR-125a-5p on Treg cells which results into reduced expression of CCR2, thus limiting their migration and eventual function in the pancreas.
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17
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Abdel-Latif M, Abdel-Moneim AA, El-Hefnawy MH, Khalil RG. Comparative and correlative assessments of cytokine, complement and antibody patterns in paediatric type 1 diabetes. Clin Exp Immunol 2017. [PMID: 28640379 DOI: 10.1111/cei.13001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
One of the most widespread and effective environmental factors is the infection with enteroviruses (EVs) which accelerate β cell destruction in type 1 diabetes (T1D). This study represented a comparison between diabetic EV+ and EV- children as well as correlation analysis between autoantibodies, T1D markers, cytokines, complement activation products and anti-coxsackievirus (CV) immunoglobulin (Ig)G. EV RNA was detected in Egyptian children with T1D (26·2%) and healthy controls (0%). Detection of anti-CV IgG in T1D-EV+ resulted in 64% positivity. Within T1D-EV+ , previously diagnosed (PD) showed 74 versus 56% in newly diagnosed (ND) children. Comparisons between populations showed increased levels of haemoglobin A1c (HbA1c), C-reactive protein (CRP), nitric oxide (NO), glutamic acid decarboxylase and insulin and islet cell autoantibodies [glutamic acid decarboxylase autoantibodies (GADA), insulin autoantibodies (IAA) and islet cell cytoplasmic autoantibodies (ICA), respectively], interferon (IFN)-γ, tumour necrosis factor (TNF)-α, interleukin (IL)-1β, IL -10, IL -12, IL -17, C3d and sC5-9 in T1D-EV+ versus T1D-EV- . Conversely, both IL-20 and transforming growth factor (TGF-β) decreased in T1D-EV+ versus EV- , while IL-4, -6 and -13 did not show any changes. Correlation analysis showed dependency of accelerated autoimmunity and β cell destruction on increased IFN-γ, IL-12 and IL-17 versus decreased IL-4, -6 and -13. In conclusion, IFN-γ, IL-12 and IL-17 played an essential role in exacerbating EV+ -T1D, while C3d, sC5b -9, IL-10 and -20 displayed distinct patterns.
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Affiliation(s)
- M Abdel-Latif
- Division of Immunity, Department of Zoology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - A A Abdel-Moneim
- Division of Physiology, Department of Zoology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - M H El-Hefnawy
- National Institute of Diabetes and Endocrinology (NIDE), Cairo, Egypt
| | - R G Khalil
- Division of Immunity, Department of Zoology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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18
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Zamani F, Almasi S, Kazemi T, Jahanban Esfahlan R, Aliparasti MR. New Approaches to the Immunotherapy of Type 1 Diabetes Mellitus Using Interleukin-27. Adv Pharm Bull 2015; 5:599-603. [PMID: 26793604 DOI: 10.15171/apb.2015.081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/22/2014] [Accepted: 07/02/2015] [Indexed: 12/21/2022] Open
Abstract
Type 1 diabetes (T1D) is a pancreatic beta cell specific autoimmune disease. One of the most significant current discussions in T1D studies is therapy. Since the conventional therapy, islet transplantation and external insulin, e.g., cannot prevent the destructive autoimmune process against original beta cells and persistent hyperglycemia remains, so recent developments in the field of T1D therapy paved the way to a renewed interest in immunotherapy based on the disease process, especially monoclonal antibody therapy. Due to encouraging laboratory results, cytokine antibody-based drugs could be effective in the clinical direction of the T1D disease process. Hence, implementation of this approach can be useful to improve clinical and laboratory manifestations of T1D.
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Affiliation(s)
- Fatemeh Zamani
- Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran. ; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shohreh Almasi
- Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran. ; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Tohid Kazemi
- Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran. ; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Rana Jahanban Esfahlan
- Department of Medical Biotechnology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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19
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Xue S, Posgai A, Wasserfall C, Myhr C, Campbell-Thompson M, Mathews CE, Brusko T, Rabinovitch A, Savinov A, Battaglia M, Schatz D, Haller M, Atkinson MA. Combination Therapy Reverses Hyperglycemia in NOD Mice With Established Type 1 Diabetes. Diabetes 2015; 64:3873-84. [PMID: 26185279 PMCID: PMC4613966 DOI: 10.2337/db15-0164] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 07/06/2015] [Indexed: 12/17/2022]
Abstract
An increasing number of therapies have proven effective at reversing hyperglycemia in the nonobese diabetic (NOD) mouse model of type 1 diabetes (T1D), yet situations of successful translation to human T1D are limited. This may be partly due to evaluating the effect of treating immediately at diagnosis in mice, which may not be reflective of the advanced disease state in humans at disease onset. In this study, we treated NOD mice with new-onset as well as established disease using various combinations of four drugs: antithymocyte globulin (ATG), granulocyte-colony stimulating factor (G-CSF), a dipeptidyl peptidase IV inhibitor (DPP-4i), and a proton pump inhibitor (PPI). Therapy with all four drugs induced remission in 83% of new-onset mice and, remarkably, in 50% of NOD mice with established disease. Also noteworthy, disease remission occurred irrespective of initial blood glucose values and mechanistically was characterized by enhanced immunoregulation involving alterations in CD4+ T cells, CD8+ T cells, and natural killer cells. This combination therapy also allowed for effective treatment at reduced drug doses (compared with effective monotherapy), thereby minimizing potential adverse effects while retaining efficacy. This combination of approved drugs demonstrates a novel ability to reverse T1D, thereby warranting translational consideration.
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Affiliation(s)
- Song Xue
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Amanda Posgai
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Clive Wasserfall
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Courtney Myhr
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Martha Campbell-Thompson
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Clayton E Mathews
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL
| | - Todd Brusko
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL
| | | | - Alexei Savinov
- Sanford Research, University of South Dakota, Sioux Falls, SD
| | | | - Desmond Schatz
- Department of Pediatrics, College of Medicine, University of Florida, Gainesville, FL
| | - Michael Haller
- Department of Pediatrics, College of Medicine, University of Florida, Gainesville, FL
| | - Mark A Atkinson
- Department of Pathology, Immunology, and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL
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20
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Pruul K, Kisand K, Alnek K, Metsküla K, Reimand K, Heilman K, Peet A, Varik K, Peetsalu M, Einberg Ü, Tillmann V, Uibo R. Differences in B7 and CD28 family gene expression in the peripheral blood between newly diagnosed young-onset and adult-onset type 1 diabetes patients. Mol Cell Endocrinol 2015; 412:265-71. [PMID: 25980680 DOI: 10.1016/j.mce.2015.05.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 05/05/2015] [Accepted: 05/05/2015] [Indexed: 12/21/2022]
Abstract
Type-1 diabetes (T1D) is a heterogeneous autoimmune disease, and there are pathogenetic differences between young- and adult-onset T1D patients. We hypothesized that the expressions of genes involved in costimulatory immune system pathways in peripheral blood are differently regulated in young- and adult-onset T1D. Study group I consisted of 80 children, adolescents, and young adults (age range 1.4-21.4 y; 31 controls and 49 T1D patients). Study group II consisted of 48 adults (age range 22.0-78.4 y; 30 controls and 18 T1D patients). The mRNA expression levels of CD86, CD28, CD25, CD226, CD40, BTLA, GITR, PDCD1, FoxP3, TGF-β, ICOS, sCTLA4, flCTLA4, and CD80 were measured in peripheral blood. Genetic polymorphisms (HLA haplotypes; rs231806, rs231775, and rs3087243 in CTLA4; rs763361 in CD226; and rs706778 in CD25) and T1D-associated autoantibodies were analyzed. In group I, there was significantly lower expression of CD226 in T1D patients than in the controls. In group II, there were significantly higher expression levels of CD86 and TGF-β in T1D patients than in the controls. In the T1D patients in group I, the upregulated CD80 expression correlated with the expression of both CTLA4 splice variants (sCTLA4 and flCTLA4). In contrast, in group II, upregulated CD86 correlated with TGF-β and CD25. In group I, the inhibitory CD80-CTLA4 pathway was activated, whereas, in group II, the activation CD86-CD28 pathway and TGF-β production were activated. These results emphasize the differences between young-onset and adult-onset T1D in the regulation of costimulatory pathways. These differences should be considered when developing novel treatments for T1D.
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Affiliation(s)
- K Pruul
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia; Centre for Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia
| | - K Kisand
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia; Centre for Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia
| | - K Alnek
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia; Centre for Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia
| | - K Metsküla
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia; Centre for Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia
| | - K Reimand
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia; Centre for Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia
| | - K Heilman
- Children's Clinic of Tartu University Hospital, N. Lunini 6, Tartu 51014, Estonia; Tallinn Children's Hospital, Tervise 28, Tallinn 13419, Estonia
| | - A Peet
- Children's Clinic of Tartu University Hospital, N. Lunini 6, Tartu 51014, Estonia; Department of Paediatrics, University of Tartu, N. Lunini 6, Tartu 51014, Estonia
| | - K Varik
- Surgery Clinic, Tartu University Hospital, L. Puusepa 8A, Tartu 51014, Estonia
| | - M Peetsalu
- Surgery Clinic, Tartu University Hospital, L. Puusepa 8A, Tartu 51014, Estonia
| | - Ü Einberg
- Tallinn Children's Hospital, Tervise 28, Tallinn 13419, Estonia
| | - V Tillmann
- Children's Clinic of Tartu University Hospital, N. Lunini 6, Tartu 51014, Estonia; Department of Paediatrics, University of Tartu, N. Lunini 6, Tartu 51014, Estonia
| | - R Uibo
- Department of Immunology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia; Centre for Translational Medicine, University of Tartu, Ravila 19, Tartu 50411, Estonia; Estonian Academy of Sciences, Kohtu 6, Tallinn 10130, Estonia.
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21
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Tan T, Xiang Y, Chang C, Zhou Z. Alteration of regulatory T cells in type 1 diabetes mellitus: a comprehensive review. Clin Rev Allergy Immunol 2014; 47:234-43. [PMID: 25086642 DOI: 10.1007/s12016-014-8440-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Type 1 diabetes mellitus (T1DM) is a T cell-mediated autoimmune disease characterized by the destruction of pancreatic β cells. Numerous studies have demonstrated the key role of CD4(+)CD25(+)FoxP3(+) regulatory T cells (Tregs) in the development of T1DM. However, the changes in Treg expression and function as well as the regulation of these activities are not clearly elucidated. Most studies on the role of Tregs in T1DM were performed on peripheral blood rather than pancreas or pancreatic lymph nodes. Tissue-based studies are more difficult to perform, and there is a lack of histological data to support the role of Tregs in T1DM. In spite of this, strategies to increase Treg cell number and/or function have been viewed as potential therapeutic approaches in treating T1DM, and several clinical trials using these strategies have already emerged. Notably, many trials fail to demonstrate clinical response even when Treg treatment successfully boosts Tregs. In view of this, whether a failure of Tregs does exist and contribute to the development of T1DM and whether more Tregs would be clinically beneficial to patients should be carefully taken into consideration before applying Tregs as treatments in T1DM.
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MESH Headings
- Antibodies, Monoclonal/therapeutic use
- Autoantigens/immunology
- CD3 Complex/genetics
- CD3 Complex/immunology
- Cell Communication
- Clinical Trials as Topic
- Dendritic Cells/immunology
- Dendritic Cells/pathology
- Diabetes Mellitus, Type 1/drug therapy
- Diabetes Mellitus, Type 1/genetics
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/pathology
- Gene Expression
- Humans
- Insulin-Secreting Cells/immunology
- Insulin-Secreting Cells/pathology
- Lymphocyte Count
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/pathology
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/pathology
- T-Lymphocytes, Regulatory/transplantation
- Th1 Cells/immunology
- Th1 Cells/pathology
- Th17 Cells/immunology
- Th17 Cells/pathology
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Affiliation(s)
- Tingting Tan
- Diabetes Center, The Second Xiangya Hospital, and Institute of Metabolism and Endocrinology, Key Laboratory of Diabetes Immunology, Ministry of Education, National Clinical Research Center for Metabolic Diseases, Central South University, 139 Renmin Zhong Road, Changsha, Hunan, 410011, People's Republic of China
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22
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Li M, Song LJ, Qin XY. Advances in the cellular immunological pathogenesis of type 1 diabetes. J Cell Mol Med 2014; 18:749-58. [PMID: 24629100 PMCID: PMC4119381 DOI: 10.1111/jcmm.12270] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 01/30/2014] [Indexed: 12/13/2022] Open
Abstract
Type 1 diabetes is an autoimmune disease caused by the immune-mediated destruction of insulin-producing pancreatic β cells. In recent years, the incidence of type 1 diabetes continues to increase. It is supposed that genetic, environmental and immune factors participate in the damage of pancreatic β cells. Both the immune regulation and the immune response are involved in the pathogenesis of type 1 diabetes, in which cellular immunity plays a significant role. For the infiltration of CD4(+) and CD8(+) T lymphocyte, B lymphocytes, natural killer cells, dendritic cells and other immune cells take part in the damage of pancreatic β cells, which ultimately lead to type 1 diabetes. This review outlines the cellular immunological mechanism of type 1 diabetes, with a particular emphasis to T lymphocyte and natural killer cells, and provides the effective immune therapy in T1D, which is approached at three stages. However, future studies will be directed at searching for an effective, safe and long-lasting strategy to enhance the regulation of a diabetogenic immune system with limited toxicity and without global immunosuppression.
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Affiliation(s)
- Min Li
- Department of General Surgery, Zhongshan Hospital, Fudan UniversityShanghai, China
| | - Lu-Jun Song
- Department of General Surgery, Zhongshan Hospital, Fudan UniversityShanghai, China
| | - Xin-Yu Qin
- Department of General Surgery, Zhongshan Hospital, Fudan UniversityShanghai, China
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23
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Wang P, Zheng SG. Regulatory T cells and B cells: implication on autoimmune diseases. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2013; 6:2668-2674. [PMID: 24294353 PMCID: PMC3843247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 10/19/2013] [Indexed: 06/02/2023]
Abstract
The regulatory T (Treg) cells play an important role in the maintenance of homeostasis and the prevention of autoimmune diseases. Although most studies are focusing on the role of Treg cells in T cells and T cells-mediated diseases, these cells also directly affect B cells and other non-T cells. This manuscript updates the role of Treg cells on the B cells and B cell-mediated diseases. In addition, the mechanisms whereby Treg cells suppress B cell responses have been discussed.
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Affiliation(s)
- Ping Wang
- Division of Liver Transplantation Surgery, The First Affiliated Hospital of Nanjing Medical University300 Guangzhou Road, Nanjing, 210029, China
| | - Song Guo Zheng
- Division of Rheumatology, Department of Medicine, Penn State University Hershey College of Medicine500 University Dr. H038, Hershey, PA 17033, USA
- Institute of Immunology, Shanghai East Hospital at Tongji University150 Jimo Road, Shanghai, 200120
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24
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da Rosa LC, Chiuso-Minicucci F, Zorzella-Pezavento SFG, França TGD, Ishikawa LLW, Colavite PM, Balbino B, Tavares LCB, Silva CL, Marques C, Ikoma MRV, Sartori A. Bacille Calmette-Guérin/DNAhsp65 prime-boost is protective against diabetes in non-obese diabetic mice but not in the streptozotocin model of type 1 diabetes. Clin Exp Immunol 2013; 173:430-7. [PMID: 23692306 DOI: 10.1111/cei.12140] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2013] [Indexed: 12/14/2022] Open
Abstract
Type I diabetes is a disease caused by autoimmune destruction of the beta cells in the pancreas that leads to a deficiency in insulin production. The aim of this study was to evaluate the prophylactic potential of a prime-boost strategy involving bacille Calmette-Guérin (BCG) and the pVAXhsp65 vaccine (BCG/DNAhsp65) in diabetes induced by streptozotocin (STZ) in C57BL/6 mice and also in spontaneous type 1 diabetes in non-obese diabetic (NOD) mice. BCG/DNAhsp65 vaccination in NOD mice determined weight gain, protection against hyperglycaemia, decreased islet inflammation, higher levels of cytokine production by the spleen and a reduced number of regulatory T cells in the spleen compared with non-immunized NOD mice. In the STZ model, however, there was no significant difference in the clinical parameters. Although this vaccination strategy did not protect mice in the STZ model, it was very effective in NOD mice. This is the first report demonstrating that a prime-boost strategy could be explored as an immunomodulatory procedure in autoimmune diseases.
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Affiliation(s)
- L C da Rosa
- Department of Microbiology and Immunology, Biosciences Institute, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brazil
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25
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Tyler AF, Mendoza JP, Firan M, Karandikar NJ. CD8(+) T Cells Are Required For Glatiramer Acetate Therapy in Autoimmune Demyelinating Disease. PLoS One 2013; 8:e66772. [PMID: 23805274 PMCID: PMC3689655 DOI: 10.1371/journal.pone.0066772] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 05/10/2013] [Indexed: 12/19/2022] Open
Abstract
The exact mechanism of glatiramer acetate (GA, Copaxone®), an FDA-approved immunomodulatory therapy for multiple sclerosis (MS), remains unclear after decades of research. Previously, we have shown that GA therapy of MS induces CD8+ T cell responses that can potentially suppress pathogenic CD4+ T cell responses. Using a murine model of MS, experimental autoimmune encephalomyelitis (EAE), we now demonstrate that CD8+ T cells are necessary in mediating the therapeutic effects of GA. Further, adoptive transfer of GA-induced CD8+ T cells resulted in amelioration of EAE, establishing a role as a viable immunotherapy in demyelinating disease. Generation of these cells required indoleamine-2,3-dioxygenase (IDO), while suppressive function depended on non-classical MHC class I, IFN-γ, and perforin expression. GA-induced regulatory myeloid cells, previously shown to activate CD4+ regulatory T cells in an antigen-independent manner, required CD8+ T cells for disease suppression in vivo. These studies demonstrate an essential role for CD8+ T cells in GA therapy and identify their potential as an adoptive immunotherapeutic agent.
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MESH Headings
- Adoptive Transfer
- Animals
- CD4-Positive T-Lymphocytes/drug effects
- CD4-Positive T-Lymphocytes/immunology
- CD4-Positive T-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/drug effects
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- Cytotoxicity, Immunologic/drug effects
- Encephalomyelitis, Autoimmune, Experimental/etiology
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Encephalomyelitis, Autoimmune, Experimental/therapy
- Female
- Forkhead Transcription Factors/metabolism
- Glatiramer Acetate/pharmacology
- Histocompatibility Antigens Class I/metabolism
- Immunotherapy
- Indoleamine-Pyrrole 2,3,-Dioxygenase/deficiency
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Indoleamine-Pyrrole 2,3,-Dioxygenase/metabolism
- Interferon-gamma/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Myelin-Oligodendrocyte Glycoprotein/toxicity
- Peptide Fragments/toxicity
- T-Lymphocytes, Regulatory/cytology
- T-Lymphocytes, Regulatory/metabolism
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Affiliation(s)
- Andrew F. Tyler
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Jason P. Mendoza
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Mihail Firan
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Nitin J. Karandikar
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- * E-mail:
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Treg cells in pancreatic lymph nodes: the possible role in diabetogenesis and β cell regeneration in a T1D model. Cell Mol Immunol 2012; 9:455-63. [PMID: 23042535 DOI: 10.1038/cmi.2012.36] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Previously, we established a model in which physiologically adequate function of the autologous β cells was recovered in non-obese diabetic (NOD) mice after the onset of hyperglycemia by rendering them hemopoietic chimera. These mice were termed antea-diabetic. In the current study, we addressed the role of T regulatory (Treg) cells in the mechanisms mediating the restoration of euglycemia in the antea-diabetic NOD model. The data generated in this study demonstrated that the numbers of Treg cells were decreased in unmanipulated NOD mice, with the most profound deficiency detected in the pancreatic lymph nodes (PLNs). The impaired retention of the Treg cells in the PLNs correlated with the locally compromised profile of the chemokines involved in their trafficking, with the most prominent decrease observed in SDF-1. The amelioration of autoimmunity and restoration of euglycemia observed in the antea-diabetic mice was associated with restoration of the Treg cell population in the PLNs. These data indicate that the function of the SDF-1/CXCR4 axis and the retention of Treg cells in the PLNs have a potential role in diabetogenesis and in the amelioration of autoimmunity and β cell regeneration in the antea-diabetic model. We have demonstrated in the antea-diabetic mouse model that lifelong recovery of the β cells has a strong correlation with normalization of the Treg cell population in the PLNs. This finding offers new opportunities for testing the immunomodulatory regimens that promote accumulation of Treg cells in the PLNs as a therapeutic approach for type 1 diabetes (T1D).
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Bassi ÊJ, Moraes-Vieira PMM, Moreira-Sá CSR, Almeida DC, Vieira LM, Cunha CS, Hiyane MI, Basso AS, Pacheco-Silva A, Câmara NOS. Immune regulatory properties of allogeneic adipose-derived mesenchymal stem cells in the treatment of experimental autoimmune diabetes. Diabetes 2012; 61:2534-45. [PMID: 22688334 PMCID: PMC3447906 DOI: 10.2337/db11-0844] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Adipose-derived mesenchymal stem cells (ADMSCs) display immunosuppressive properties, suggesting a promising therapeutic application in several autoimmune diseases, but their role in type 1 diabetes (T1D) remains largely unexplored. The aim of this study was to investigate the immune regulatory properties of allogeneic ADMSC therapy in T cell-mediated autoimmune diabetes in NOD mice. ADMSC treatment reversed the hyperglycemia of early-onset diabetes in 78% of diabetic NOD mice, and this effect was associated with higher serum insulin, amylin, and glucagon-like peptide 1 levels compared with untreated controls. This improved outcome was associated with downregulation of the CD4(+) Th1-biased immune response and expansion of regulatory T cells (Tregs) in the pancreatic lymph nodes. Within the pancreas, inflammatory cell infiltration and interferon-γ levels were reduced, while insulin, pancreatic duodenal homeobox-1, and active transforming growth factor-β1 expression were increased. In vitro, ADMSCs induced the expansion/proliferation of Tregs in a cell contact-dependent manner mediated by programmed death ligand 1. In summary, ADMSC therapy efficiently ameliorates autoimmune diabetes pathogenesis in diabetic NOD mice by attenuating the Th1 immune response concomitant with the expansion/proliferation of Tregs, thereby contributing to the maintenance of functional β-cells. Thus, this study may provide a new perspective for the development of ADMSC-based cellular therapies for T1D.
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Affiliation(s)
- Ênio J Bassi
- Department of Immunology, Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences IV, Universidade de São Paulo, São Paulo, Brazil
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Targeting Janus tyrosine kinase 3 (JAK3) with an inhibitor induces secretion of TGF-β by CD4+ T cells. Cell Mol Immunol 2012; 9:350-60. [PMID: 22728763 DOI: 10.1038/cmi.2012.20] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Regulatory T cells (Tregs) are critical for the peripheral maintenance of the autoreactive T cells in autoimmune disorders such as type 1 diabetes (T1D). Pharmacological inhibition of Janus tyrosine kinase 3 (JAK3) has been proposed as a basis for new treatment modalities against autoimmunity and allogeneic responses. Targeting JAK3 with an inhibitor has previously been shown to exhibit protective action against the development of T1D in non-obese diabetic (NOD) mice. As the mechanism of such preventative action has been unknown, we hypothesized that JAK3 inhibition induces generation of Tregs. Here, we show that the JAK3 inhibitor 4-(4'-hydroxyphenyl)-amino-6,7-dimethoxyquinazoline (WHI-P131) suppresses proliferation of short-term cultured NOD CD4(+) T cells through induction of apoptosis, while promoting survival of a particular population of long-term cultured cells. It was found that the surviving cells were not of the CD4(+)CD25(+)FoxP3(+) phenotype. They secreted decreased amounts of IL-10, IL-4 and interferon (IFN)-γ compared to the cells not exposed to the optimal concentrations of JAK3 inhibitor. However, an elevated transforming growth factor (TGF)-β secretion was detected in their supernatants. In vivo treatment of prediabetic NOD mice with WHI-P131 did not affect the frequency and number of splenic and pancreatic lymph node CD4(+)FoxP3(+) Tregs, while generating an elevated numbers of CD4(+)FoxP3(-) TGF-β-secreting T cells. In conclusion, our data suggest an induction of TGF-β-secreting CD4(+) T cells as the underlying mechanism for antidiabetogenic effects obtained by the treatment with a JAK3 inhibitor. To our knowledge, this is the first report of the JAK3 inhibitor activity in the context of the murine Tregs.
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Mamchak AA, Manenkova Y, Leconet W, Zheng Y, Chan JR, Stokes CL, Shoda LK, von Herrath M, Bresson D. Preexisting autoantibodies predict efficacy of oral insulin to cure autoimmune diabetes in combination with anti-CD3. Diabetes 2012; 61:1490-9. [PMID: 22362174 PMCID: PMC3357270 DOI: 10.2337/db11-1304] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We have previously developed a combination therapy (CT) using anti-CD3 monoclonal antibodies together with islet-(auto)antigen immunizations that can more efficiently reverse type 1 diabetes (T1D) than either entity alone. However, clinical translation of antigen-specific therapies in general is hampered by the lack of biomarkers that could be used to optimize the modalities of antigen delivery and to predict responders from nonresponders. To support the rapid identification of candidate biomarkers, we systematically evaluated multiple variables in a mathematical disease model. The in silico predictions were validated by subsequent laboratory data in NOD mice with T1D that received anti-CD3/oral insulin CT. Our study shows that higher anti-insulin autoantibody levels at diagnosis can distinguish responders and nonresponders among recipients of CT exquisitely well. In addition, early posttreatment changes in proinflammatory cytokines were indicative of long-term remission. Coadministration of oral insulin improved and prolonged the therapeutic efficacy of anti-CD3 therapy, and long-term protection was achieved by maintaining elevated insulin-specific regulatory T cell numbers that efficiently lowered diabetogenic effector memory T cells. Our validation of preexisting autoantibodies as biomarkers to distinguish future responders from nonresponders among recipients of oral insulin provides a compelling and mechanistic rationale to more rapidly translate anti-CD3/oral insulin CT for human T1D.
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Affiliation(s)
| | - Yulia Manenkova
- Diabetes Center, La Jolla Institute for Allergy and Immunology, La Jolla, California
| | - Wilhem Leconet
- Diabetes Center, La Jolla Institute for Allergy and Immunology, La Jolla, California
| | | | | | | | | | - Matthias von Herrath
- Diabetes Center, La Jolla Institute for Allergy and Immunology, La Jolla, California
- Corresponding author: Matthias von Herrath, , or Damien Bresson,
| | - Damien Bresson
- Diabetes Center, La Jolla Institute for Allergy and Immunology, La Jolla, California
- Corresponding author: Matthias von Herrath, , or Damien Bresson,
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Regulatory T cells ameliorate cardiac remodeling after myocardial infarction. Basic Res Cardiol 2011; 107:232. [DOI: 10.1007/s00395-011-0232-6] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 11/14/2011] [Accepted: 11/25/2011] [Indexed: 12/21/2022]
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Li CR, Baaten BJG, Bradley LM. Harnessing memory adaptive regulatory T cells to control autoimmunity in type 1 diabetes. J Mol Cell Biol 2011; 4:38-47. [PMID: 22116888 DOI: 10.1093/jmcb/mjr040] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Type 1 diabetes (T1D) results from autoimmune destruction of insulin-producing β-cells in the pancreatic islets. There is an immediate need to restore both β-cell function and immune tolerance to control disease progression and ultimately cure T1D. Currently, there is no effective treatment strategy to restore glucose regulation in patients with T1D. FoxP3-expressing CD4(+) regulatory T cells (Tregs) are potential candidates to control autoimmunity because they play a central role in maintaining self-tolerance. However, deficiencies in either naturally occurring Tregs (nTregs) themselves and/or their ability to control pathogenic effector T cells have been associated with T1D. Here, we hypothesize that nTregs can be replaced by FoxP3(+) adaptive Tregs (aTregs), which are uniquely equipped to combat autoreactivity in T1D. Unlike nTregs, aTregs are stable and provide long-lived protection. In this review, we summarize the current understanding of aTregs and their potential for use as an immunological intervention to treat T1D.
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Affiliation(s)
- Cheng-Rui Li
- Infectious and Inflammatory Disease Center, Sanford-Burnham Medical Research Institute, La Jolla, CA 92037, USA
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32
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Chhabra P, Brayman KL. Current status of immunomodulatory and cellular therapies in preclinical and clinical islet transplantation. J Transplant 2011; 2011:637692. [PMID: 22046502 PMCID: PMC3199196 DOI: 10.1155/2011/637692] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2011] [Accepted: 07/11/2011] [Indexed: 02/08/2023] Open
Abstract
Clinical islet transplantation is a β-cell replacement strategy that represents a possible definitive intervention for patients with type 1 diabetes, offering substantial benefits in terms of lowering daily insulin requirements and reducing incidences of debilitating hypoglycemic episodes and unawareness. Despite impressive advances in this field, a limiting supply of islets, inadequate means for preventing islet rejection, and the deleterious diabetogenic and nephrotoxic side effects associated with chronic immunosuppressive therapy preclude its wide-spread applicability. Islet transplantation however allows a window of opportunity for attempting various therapeutic manipulations of islets prior to transplantation aimed at achieving superior transplant outcomes. In this paper, we will focus on the current status of various immunosuppressive and cellular therapies that promote graft function and survival in preclinical and clinical islet transplantation with special emphasis on the tolerance-inducing capacity of regulatory T cells as well as the β-cells regenerative capacity of stem cells.
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Affiliation(s)
- Preeti Chhabra
- Department of Surgery, University of Virginia, Charlottesville, VA 22908, USA
| | - Kenneth L. Brayman
- Department of Surgery, University of Virginia, Charlottesville, VA 22908, USA
- Division of Transplantation, Department of Surgery, University of Virginia, Charlottesville, VA 22908, USA
- The Center for Cellular Transplantation and Therapeutics, University of Virginia, Charlottesville, VA 22908, USA
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Serum amyloid A overrides Treg anergy via monocyte-dependent and Treg-intrinsic, SOCS3-associated pathways. Blood 2011; 117:3793-8. [PMID: 21325601 DOI: 10.1182/blood-2010-11-318832] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The acute phase protein serum amyloid A (SAA) has been well characterized as an indicator of inflammation. Nevertheless, its functions in pro versus anti-inflammatory processes remain obscure. Here we provide unexpected evidences that SAA induces the proliferation of the tolerogenic subset of regulatory T cells (T(reg)). Intriguingly, SAA reverses T(reg) anergy via its interaction with monocytes to activate distinct mitogenic pathways in T(reg) but not effector T cells. This selective responsiveness of T(reg) correlates with their diminished expression of SOCS3 and is antagonized by T(reg)-specific induction of this regulator of cytokine signaling. Collectively, these evidences suggest a novel anti-inflammatory role of SAA in the induction of a micro-environment that supports T(reg) expansion at sites of infection or tissue injury, likely to curb (auto)-inflammatory responses.
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34
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Current world literature. Curr Opin Endocrinol Diabetes Obes 2010; 17:384-93. [PMID: 20588116 DOI: 10.1097/med.0b013e32833c4b2b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Burton OT, Zaccone P, Phillips JM, De La Peña H, Fehérvári Z, Azuma M, Gibbs S, Stockinger B, Cooke A. Roles for TGF-beta and programmed cell death 1 ligand 1 in regulatory T cell expansion and diabetes suppression by zymosan in nonobese diabetic mice. THE JOURNAL OF IMMUNOLOGY 2010; 185:2754-62. [PMID: 20675590 DOI: 10.4049/jimmunol.1001365] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Zymosan is a complex fungal component shown to be capable of both promoting and suppressing the development of autoimmune disorders in mice. In this study, we show that a single injection of zymosan just prior to diabetes onset can significantly delay the progression of disease in NOD mice. Zymosan treatment of NOD mice induced the production of biologically active TGF-beta from cells infiltrating the pancreas and was associated with expansion of programmed cell death 1 ligand 1(+)TGF-beta(+) macrophages and Foxp3(+) regulatory T cells in vivo. Neutralization of either TGF-beta or programmed cell death 1 ligand 1 abrogated the protective effects of zymosan. Zymosan acted through TLR2 as well as ERK and p38 MAPK to induce macrophage secretion of TGF-beta and promotion of Foxp3(+) regulatory T cells in vitro and in vivo.
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Affiliation(s)
- Oliver T Burton
- Department of Pathology, University of Cambridge, Cambridge, UK.
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36
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Bettini M, Vignali DAA. Regulatory T cells and inhibitory cytokines in autoimmunity. Curr Opin Immunol 2009; 21:612-8. [PMID: 19854631 DOI: 10.1016/j.coi.2009.09.011] [Citation(s) in RCA: 178] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Revised: 09/18/2009] [Accepted: 09/21/2009] [Indexed: 01/21/2023]
Abstract
Foxp3(+) regulatory T cells (T(regs)) contribute significantly to the maintenance of peripheral tolerance, but they ultimately fail in autoimmune diseases. The events that lead to T(reg) failure in controlling autoreactive effector T cells (T(effs)) during autoimmunity are not completely understood. In this review, we discuss possible mechanisms for this subversion as they relate to type 1 diabetes (T1D) and multiple sclerosis (MS). Recent studies emphasize firstly, the role of inflammatory cytokines, such as IL-6, in inhibiting or subverting T(reg) function; secondly, the issue of T(reg) plasticity; thirdly, the possible resistance of autoimmune T cells to T(reg)-mediated control; and fourthly, T(reg)-associated inhibitory cytokines TGFbeta, IL-10 and IL-35 in facilitating T(reg) suppressive activity and promoting T(reg) generation. These recent advances place a large emphasis on the local tissue specific inflammatory environment as it relates to T(reg) function and disease development.
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Affiliation(s)
- Maria Bettini
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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