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Ngai D, Sukka SR, Tabas I. Crosstalk between efferocytic myeloid cells and T-cells and its relevance to atherosclerosis. Front Immunol 2024; 15:1403150. [PMID: 38873597 PMCID: PMC11169609 DOI: 10.3389/fimmu.2024.1403150] [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: 03/18/2024] [Accepted: 05/17/2024] [Indexed: 06/15/2024] Open
Abstract
The interplay between myeloid cells and T-lymphocytes is critical to the regulation of host defense and inflammation resolution. Dysregulation of this interaction can contribute to the development of chronic inflammatory diseases. Important among these diseases is atherosclerosis, which refers to focal lesions in the arterial intima driven by elevated apolipoprotein B-containing lipoproteins, notably low-density lipoprotein (LDL), and characterized by the formation of a plaque composed of inflammatory immune cells, a collection of dead cells and lipids called the necrotic core, and a fibrous cap. As the disease progresses, the necrotic core expands, and the fibrous cap becomes thin, which increases the risk of plaque rupture or erosion. Plaque rupture leads to a rapid thrombotic response that can give rise to heart attack, stroke, or sudden death. With marked lowering of circulating LDL, however, plaques become more stable and cardiac risk is lowered-a process known as atherosclerosis regression. A critical aspect of both atherosclerosis progression and regression is the crosstalk between innate (myeloid cells) and adaptive (T-lymphocytes) immune cells. Myeloid cells are specialized at clearing apoptotic cells by a process called efferocytosis, which is necessary for inflammation resolution. In advanced disease, efferocytosis is impaired, leading to secondary necrosis of apoptotic cells, inflammation, and, most importantly, defective tissue resolution. In regression, efferocytosis is reawakened aiding in inflammation resolution and plaque stabilization. Here, we will explore how efferocytosing myeloid cells could affect T-cell function and vice versa through antigen presentation, secreted factors, and cell-cell contacts and how this cellular crosstalk may contribute to the progression or regression of atherosclerosis.
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Affiliation(s)
- David Ngai
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
| | - Santosh R. Sukka
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
| | - Ira Tabas
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, United States
- Department of Physiology, Columbia University Irving Medical Center, New York, NY, United States
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2
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Zhao J, Liu Y, Shi X, Dang J, Liu Y, Li S, Cai W, Hou Y, Zeng D, Chen Y, Yuan J, Xiong Y, Wu W, Cai P, Chen J, Sun J, Shao Y, Brand DD, Zheng SG. Infusion of GMSCs relieves autoimmune arthritis by suppressing the externalization of neutrophil extracellular traps via PGE2-PKA-ERK axis. J Adv Res 2024; 58:79-91. [PMID: 37169220 PMCID: PMC10982864 DOI: 10.1016/j.jare.2023.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/21/2023] [Accepted: 05/04/2023] [Indexed: 05/13/2023] Open
Abstract
INTRODUCTION Rheumatoid arthritis (RA) is a systemic autoimmune disease with limited treatment success, characterized by chronic inflammation and progressive cartilage and bone destruction. Accumulating evidence has shown that neutrophil extracellular traps (NETs) released by activated neutrophils are important for initiating and perpetuating synovial inflammation and thereby could be a promising therapeutic target for RA. K/B × N serum transfer-induced arthritis (STIA) is a rapidly developed joint inflammatory model that somehow mimics the inflammatory response in patients with RA. Human gingival-derived mesenchymal stem cells (GMSCs) have been previously shown to possess immunosuppressive effects in arthritis and humanized animal models. However, it is unknown whether GMSCs can manage neutrophils in autoimmune arthritis. OBJECTIVES To evaluate whether infusion of GMSCs can alleviate RA by regulating neutrophils and NETs formation. If this is so, we will explore the underlying mechanism(s) in an animal model of inflammatory arthritis. METHODS The effects of GMSCs on RA were assessed by comparing the symptoms of the K/B × N serum transfer-induced arthritis (STIA) model administered either with GMSCs or with control cells. Phenotypes examined included clinical scores, rear ankle thickness, paw swelling, inflammation, synovial cell proliferation, and immune cell frequency. The regulation of GMSCs on NETs was examined through immunofluorescence and immunoblotting in GMSCs-infused STIA mice and in an in vitro co-culture system of neutrophils with GMSCs. The molecular mechanism(s) by which GMSCs regulate NETs was explored both in vitro and in vivo by silencing experiments. RESULTS We found in this study that adoptive transfer of GMSCs into STIA mice significantly ameliorated experimental arthritis and reduced neutrophil infiltration and NET formation. In vitro studies also showed that GMSCs inhibited the generation of NETs in neutrophils. Subsequent investigations revealed that GMSCs secreted prostaglandin E2 (PGE2) to activate protein kinase A (PKA), which ultimately inhibited the downstream extracellular signal-regulated kinase (ERK) pathway that is essential for NET formation. CONCLUSION Our results demonstrate that infusion of GMSCs can ameliorate inflammatory arthritis mainly by suppressing NET formation via the PGE2-PKA-ERK signaling pathway. These findings further support the notion that the manipulation of GMSCs is a promising stem cell-based therapy for patients with RA and other autoimmune and inflammatory diseases.
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Affiliation(s)
- Jun Zhao
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Yan Liu
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Xiaoyi Shi
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Junlong Dang
- Department of Pathology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Yu Liu
- Guangxi Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin 541000, China
| | - Siwen Li
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Wei Cai
- Department of Neurology, Mental and Neurological Disease Research Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Yuluan Hou
- Division of Stomatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Donglan Zeng
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Ye Chen
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Jia Yuan
- Division of Stomatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Yiding Xiong
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Wenbin Wu
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Peihong Cai
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Jingrong Chen
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Jianbo Sun
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, China
| | - Yiming Shao
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, China
| | - David D Brand
- The Lt. Col. Luke Weathers, Jr. VA Medical Center, Memphis, TN 38163, United States
| | - Song Guo Zheng
- Department of Clinical Immunology Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China; The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, China.
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3
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Goldmann O, Nwofor OV, Chen Q, Medina E. Mechanisms underlying immunosuppression by regulatory cells. Front Immunol 2024; 15:1328193. [PMID: 38380317 PMCID: PMC10876998 DOI: 10.3389/fimmu.2024.1328193] [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: 10/26/2023] [Accepted: 01/16/2024] [Indexed: 02/22/2024] Open
Abstract
Regulatory cells, such as regulatory T cells (Tregs), regulatory B cells (Bregs), and myeloid-derived suppressor cells (MDSCs), play a crucial role in preserving immune tolerance and controlling immune responses during infections to prevent excessive immune activation. However, pathogens have developed strategies to hijack these regulatory cells to decrease the overall effectiveness of the immune response and persist within the host. Consequently, therapeutic targeting of these immunosuppressive mechanisms during infection can reinvigorate the immune response and improve the infection outcome. The suppressive mechanisms of regulatory cells are not only numerous but also redundant, reflecting the complexity of the regulatory network in modulating the immune responses. The context of the immune response, such as the type of pathogen or tissue involved, further influences the regulatory mechanisms involved. Examples of these immunosuppressive mechanisms include the production of inhibitory cytokines such as interleukin 10 (IL-10) and transforming growth factor beta (TGF-β) that inhibit the production of pro-inflammatory cytokines and dampen the activation and proliferation of effector T cells. In addition, regulatory cells utilize inhibitory receptors like cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and programmed cell death protein 1 (PD-1) to engage with their respective effector cells, thereby suppressing their function. An alternative approach involves the modulation of metabolic reprogramming in effector immune cells to limit their activation and proliferation. In this review, we provide an overview of the major mechanisms mediating the immunosuppressive effect of the different regulatory cell subsets in the context of infection.
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Affiliation(s)
| | | | | | - Eva Medina
- Infection Immunology Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
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Li J, Gong Y, Wang Y, Huang H, Du H, Cheng L, Ma C, Cai Y, Han H, Tao J, Li G, Cheng P. Classification of regulatory T cells and their role in myocardial ischemia-reperfusion injury. J Mol Cell Cardiol 2024; 186:94-106. [PMID: 38000204 DOI: 10.1016/j.yjmcc.2023.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 11/14/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023]
Abstract
Myocardial ischemia-reperfusion injury (MIRI) is closely related to the final infarct size in acute myocardial infarction (AMI). Therefore, reducing MIRI can effectively improve the prognosis of AMI patients. At the same time, the healing process after AMI is closely related to the local inflammatory microenvironment. Regulatory T cells (Tregs) can regulate various physiological and pathological immune inflammatory responses and play an important role in regulating the immune inflammatory response after AMI. However, different subtypes of Tregs have different effects on MIRI, and the same subtype of Tregs may also have different effects at different stages of MIRI. This article systematically reviews the classification and function of Tregs, as well as the role of various subtypes of Tregs in MIRI. A comprehensive understanding of the role of each subtype of Tregs can help design effective methods to control immune reactions, reduce MIRI, and provide new potential therapeutic options for AMI.
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Affiliation(s)
- Junlin Li
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China; Department of Cardiology, The Second People's Hospital of Neijiang, Neijiang 641100, China
| | - Yajun Gong
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Yiren Wang
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Huihui Huang
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Huan Du
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Lianying Cheng
- Department of Integrated Traditional Chinese and Western Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Cui Ma
- Department of Mathematics, Army Medical University, Chongqing 400038, China
| | - Yongxiang Cai
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Hukui Han
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Jianhong Tao
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Gang Li
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Panke Cheng
- Institute of Cardiovascular Diseases & Department of Cardiology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China; Ultrasound in Cardiac Electrophysiology and Biomechanics Key Laboratory of Sichuan Province, Chengdu 610072, China.
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5
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Chen Y, Liang R, Shi X, Shen R, Liu L, Liu Y, Xue Y, Guo X, Dang J, Zeng D, Huang F, Sun J, Zhang J, Wang J, Olsen N, August A, Huang W, Pan Y, Zheng SG. Targeting kinase ITK treats autoimmune arthritis via orchestrating T cell differentiation and function. Biomed Pharmacother 2023; 169:115886. [PMID: 37992572 DOI: 10.1016/j.biopha.2023.115886] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/06/2023] [Accepted: 11/13/2023] [Indexed: 11/24/2023] Open
Abstract
IL-2 inducible T cell kinase (ITK) is critical in T helper subset differentiation and its inhibition has been suggested for the treatment of T cell-mediated inflammatory diseases. T follicular helper (Tfh), Th17 and regulatory T cells (Treg) also play important roles in the development of rheumatoid arthritis (RA), while the role of ITK in the development of RA and the intricate balance between effector T and regulatory T cells remains unclear. Here, we found that CD4+ T cells from RA patients presented with an elevated ITK activation. ITK inhibitor alleviated existing collagen-induced arthritis (CIA) and reduced antigen specific antibody production. Blocking ITK kinase activity interferes Tfh cell generation. Moreover, ITK inhibitor effectively rebalances Th17 and Treg cells by regulating Foxo1 translocation. Furthermore, we identified dihydroartemisinin (DHA) as a potential ITK inhibitor, which could inhibit PLC-γ1 phosphorylation and the progression of CIA by rebalancing Th17 and Treg cells. Out data imply that ITK activation is upregulated in RA patients, and therefore blocking ITK signal may provide an effective strategy to treat RA patients and highlight the role of ITK on the Tfh induction and RA progression.
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Affiliation(s)
- Ye Chen
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China; Department of Immunology, School of Cell and Gene Therapy, Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
| | - Rongzhen Liang
- Department of Immunology, School of Cell and Gene Therapy, Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
| | - Xiaoyi Shi
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China
| | - Rong Shen
- Department of Geriatrics, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, PR China
| | - Liu Liu
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250000, PR China
| | - Yan Liu
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China
| | - Youqiu Xue
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China
| | - Xinghua Guo
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China
| | - Junlong Dang
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China
| | - Donglan Zeng
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China
| | - Feng Huang
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China
| | - Jianbo Sun
- The first Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, China
| | - Jingwen Zhang
- Department of Hematology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Julie Wang
- Department of Immunology, School of Cell and Gene Therapy, Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China
| | - Nancy Olsen
- Division of Rheumatology, Department of Medicine at the Penn State University Hershey Medical Center, Hershey, PA, USA
| | - Avery August
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Weishan Huang
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA; Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
| | - Yunfeng Pan
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, PR China.
| | - Song Guo Zheng
- Department of Immunology, School of Cell and Gene Therapy, Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201600, China.
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Coschi CH, Juergens RA. Overcoming Resistance Mechanisms to Immune Checkpoint Inhibitors: Leveraging the Anti-Tumor Immune Response. Curr Oncol 2023; 31:1-23. [PMID: 38275827 PMCID: PMC10814017 DOI: 10.3390/curroncol31010001] [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: 10/25/2023] [Revised: 12/05/2023] [Accepted: 12/15/2023] [Indexed: 01/27/2024] Open
Abstract
As far back as 3000 years ago, the immune system was observed to play a role in mediating tumor regression. Since then, many strategies have been developed to leverage the anti-tumor immune response. However, while many patients respond to ICIs up front some do not, and many of those that do eventually experience tumor progression. Currently, there are several predictive biomarkers of the immune checkpoint inhibitor response; however, no one test appears to be universally predictive and their application varies by disease site. There are many ways in which cancer cells develop primary or acquired resistance to immune checkpoint inhibitors. Efforts to reverse resistance include ways to combat T cell exhaustion, reprogram the tumor microenvironment, increase the availability of tumor neo-antigens, target alternative immune checkpoints, restore a normal/healthy patient gut microbiome, oncolytic viruses and tumor vaccines. The most studied and most promising methods include combining ICIs with therapies targeting alternative immune checkpoints and restoring a normal/healthy patient gut microbiome. This review will discuss T cell-mediated immunity, how this is leveraged by modern immunotherapy to treat cancer and mechanisms of immune checkpoint inhibitor resistance, while highlighting strategies to overcome primary and secondary resistance mechanisms.
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Affiliation(s)
- Courtney H. Coschi
- Department of Oncology, McMaster University, 699 Concession Street, Hamilton, ON L8V 5C2, Canada;
| | - Rosalyn A. Juergens
- Department of Oncology, McMaster University, 699 Concession Street, Hamilton, ON L8V 5C2, Canada;
- Escarpment Cancer Research Institute, McMaster University, Hamilton, ON L8V 5C2, Canada
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7
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Moghaddam MZ, Mousavi MJ, Ghotloo S. Cell-based therapies for the treatment of rheumatoid arthritis. Immun Inflamm Dis 2023; 11:e1091. [PMID: 38018576 PMCID: PMC10664399 DOI: 10.1002/iid3.1091] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 11/30/2023] Open
Abstract
Autoimmune diseases, including rheumatoid arthritis that is the most prevalent rheumatic autoimmune disorder, affect autologous connective tissues caused by the breakdown of the self-tolerance mechanisms of the immune system. During the last two decades, cell-based therapy, including stem cells and none-stem cells has been increasingly considered as a therapeutic option in various diseases. This is partly due to the unique properties of stem cells that divide and differentiate from the specialized cells in the damaged tissue. Moreover, stem cells and none-stem cells, impose immunomodulatory properties affecting the diseases caused by immunological abnormalities such as rheumatic autoimmune disorders. In the present review, the efficacy of cell-based therapy with four main types of stem cells, including mesenchymal stem cells, hematopoietic stem cells, embryonic stem cells, and human amniotic membrane cells, as well as none-stem cells, including regulatory T cells, chimeric antigen receptor T cells, and tolerogenic dendritic cells will be evaluated. Moreover, other related issues, including safety, changes in immunological parameters, suitable choice of stem cell and none-stem cell origin, conditioning regimen, limitations, and complications will be discussed.
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Affiliation(s)
| | - Mohammad Javad Mousavi
- Department of HematologyFaculty of Allied Medicine, Bushehr University of Medical SciencesBushehrIran
| | - Somayeh Ghotloo
- Autoimmune Diseases Research CenterKashan University of Medical SciencesKashanIran
- Department of Clinical Laboratory SciencesKashan University of Medical SciencesKashanIran
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Li K, Jiang Y, Wang N, Lai L, Xu S, Xia T, Yue X, Xin H. Traditional Chinese Medicine in Osteoporosis Intervention and the Related Regulatory Mechanism of Gut Microbiome. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2023; 51:1957-1981. [PMID: 37884447 DOI: 10.1142/s0192415x23500866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
The gut microbiome (GM) has become a crucial factor that can affect the progression of osteoporosis. A number of studies have demonstrated the impact of Traditional Chinese Medicine (TCM) on GM and bone metabolism. In this review, we summarize the potential mechanisms of the relationship between osteoporosis and GM disorder and introduce several natural Chinese medicines that exert anti-osteoporosis effects by modulating the GM. It is underlined that, through the provision of the microbial associated molecular pattern (MAMP), the GM causes inflammatory reactions and alterations in the Treg-Th17 balance and ultimately leads to changes in bone mass. Serotonin and many hormones, especially estrogen, may play a crucial role in the interaction of the GM with bone metabolism. Additionally, the GM may affect the absorption of specific nutrients in the intestine, particularly minerals like calcium, magnesium, and phosphorus. Several natural Chinese herbs, such as Sambucus Williamsii, Achyranthes bidentata Blume, Pleurotus ostreatus and Ganoderma lucidum mushrooms, Pueraria Lobata, and Agaricus blazei Murill have exhibited anti-osteoporosis effects through regulating the distribution and metabolism of the GM. These herbs may increase the abundance of Firmicutes, decrease the abundance of Bacteroides, promote the GM to produce more SCFAs, modulate the immune response caused by harmful bacteria, and increase the proportion of Treg-Th17 to indirectly affect bone metabolism. Moreover, gut-derived 5-HT is an important target for TCM to prevent osteoporosis via the gut-bone axis. Puerarin could prevent osteoporosis by improving intestinal mucosal integrity and decrease systemic inflammation caused by estrogen deficiency.
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Affiliation(s)
- Kun Li
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, Shanghai, P. R. China
- Department of Traditional Chinese Medicine, Changzheng Hospital, Naval Medical University, Shanghai, P. R. China
| | - Yiping Jiang
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, Shanghai, P. R. China
| | - Nani Wang
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou, P. R. China
| | - Liyong Lai
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, Shanghai, P. R. China
| | - Shengyan Xu
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, Shanghai, P. R. China
| | - Tianshuang Xia
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, Shanghai, P. R. China
| | - Xiaoqiang Yue
- Department of Traditional Chinese Medicine, Changzheng Hospital, Naval Medical University, Shanghai, P. R. China
| | - Hailiang Xin
- Department of Pharmacognosy, School of Pharmacy, Naval Medical University, Shanghai, P. R. China
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9
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Hung HC, Fan MH, Wang D, Miao CH, Su P, Liu CL. Effect of chimeric antigen receptor T cells against protease-activated receptor 1 for treating pancreatic cancer. BMC Med 2023; 21:338. [PMID: 37667257 PMCID: PMC10478223 DOI: 10.1186/s12916-023-03053-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 08/25/2023] [Indexed: 09/06/2023] Open
Abstract
BACKGROUND Pancreatic ductal adenocarcinoma (PDAC) is a devastating malignancy with a 5-year survival rate of 6% following a diagnosis, and novel therapeutic modalities are needed. Protease-activated receptor 1 (PAR1) is abundantly overexpressed by both tumor cells and multiple stroma cell subsets in the tumor microenvironment (TME), thereby offering a suitable immunotherapy target. METHODS A chimeric antigen receptor (CAR) strategy was applied to target PAR1 using a human anti-PAR1 scFv antibody fused to the transmembrane region with two co-stimulatory intracellular signaling domains of cluster of differentiation 28 (CD28) and CD137 (4-1BB), added to CD3ζ in tandem. RESULTS The engineered PAR1CAR-T cells eliminated PAR1 overexpression and transforming growth factor (TGF)-β-mediated PAR1-upregulated cancer cells by approximately 80% in vitro. The adoptive transfer of PAR1CAR-T cells was persistently enhanced and induced the specific regression of established MIA PaCa-2 cancer cells by > 80% in xenograft models. Accordingly, proinflammatory cytokines/chemokines increased in CAR-T-cell-treated mouse sera, whereas Ki67 expression in tumors decreased. Furthermore, the targeted elimination of PAR1-expressing tumors reduced matrix metalloproteinase 1 (MMP1) levels, suggesting that the blocking of the PAR1/MMP1 pathway constitutes a new therapeutic option for PDAC treatment. CONCLUSIONS Third-generation PAR1CAR-T cells have antitumor activity in the TME, providing innovative CAR-T-cell immunotherapy against PDAC.
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Affiliation(s)
- Hao-Chien Hung
- Department of General Surgery, Chang-Gung Memorial Hospital at Linkou, Taoyuan, 33305, Taiwan
| | - Ming-Huei Fan
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan
| | - Daniel Wang
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan
| | - Carol H Miao
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA, 98101, USA
| | - Pong Su
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan
| | - Chao-Lien Liu
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan.
- Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan.
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10
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Wang M, Thomson AW, Yu F, Hazra R, Junagade A, Hu X. Regulatory T lymphocytes as a therapy for ischemic stroke. Semin Immunopathol 2023; 45:329-346. [PMID: 36469056 PMCID: PMC10239790 DOI: 10.1007/s00281-022-00975-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 11/17/2022] [Indexed: 12/09/2022]
Abstract
Unrestrained excessive inflammatory responses exacerbate ischemic brain injury and impede post-stroke brain recovery. CD4+CD25+Foxp3+ regulatory T (Treg) cells play important immunosuppressive roles to curtail inflammatory responses and regain immune homeostasis after stroke. Accumulating evidence confirms that Treg cells are neuroprotective at the acute stage after stroke and promote brain repair at the chronic phases. The beneficial effects of Treg cells are mediated by diverse mechanisms involving cell-cell interactions and soluble factor release. Multiple types of cells, including both immune cells and non-immune CNS cells, have been identified to be cellular targets of Treg cells. In this review, we summarize recent findings regarding the function of Treg cells in ischemic stroke and the underlying cellular and molecular mechanisms. The protective and reparative properties of Treg cells endorse them as good candidates for immune therapy. Strategies that boost the numbers and functions of Treg cells have been actively developing in the fields of transplantation and autoimmune diseases. We discuss the approaches for Treg cell expansion that have been tested in stroke models. The application of these approaches to stroke patients may bring new hope for stroke treatments.
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Affiliation(s)
- Miao Wang
- Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, 15261, USA
- Pittsburgh Institute of Brain Disorders and Recovery and Department of Neurology, School of Medicine, University of Pittsburgh, 200 Lothrop Street, SBST, Pittsburgh, PA, 15213, USA
| | - Angus W Thomson
- Department of Surgery and Department of Immunology, Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA
| | - Fang Yu
- Pittsburgh Institute of Brain Disorders and Recovery and Department of Neurology, School of Medicine, University of Pittsburgh, 200 Lothrop Street, SBST, Pittsburgh, PA, 15213, USA
| | - Rimi Hazra
- Pittsburgh Heart, Lung, and Blood Vascular Medicine Institute, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Aditi Junagade
- Pittsburgh Institute of Brain Disorders and Recovery and Department of Neurology, School of Medicine, University of Pittsburgh, 200 Lothrop Street, SBST, Pittsburgh, PA, 15213, USA
| | - Xiaoming Hu
- Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, 15261, USA.
- Pittsburgh Institute of Brain Disorders and Recovery and Department of Neurology, School of Medicine, University of Pittsburgh, 200 Lothrop Street, SBST, Pittsburgh, PA, 15213, USA.
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11
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Alghamdi B, Jeon HH, Ni J, Qiu D, Liu A, Hong JJ, Ali M, Wang A, Troka M, Graves DT. Osteoimmunology in Periodontitis and Orthodontic Tooth Movement. Curr Osteoporos Rep 2023; 21:128-146. [PMID: 36862360 PMCID: PMC10696608 DOI: 10.1007/s11914-023-00774-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/04/2023] [Indexed: 03/03/2023]
Abstract
PURPOSE OF REVIEW To review the role of the immune cells and their interaction with cells found in gingiva, periodontal ligament, and bone that leads to net bone loss in periodontitis or bone remodeling in orthodontic tooth movement. RECENT FINDINGS Periodontal disease is one of the most common oral diseases causing inflammation in the soft and hard tissues of the periodontium and is initiated by bacteria that induce a host response. Although the innate and adaptive immune response function cooperatively to prevent bacterial dissemination, they also play a major role in gingival inflammation and destruction of the connective tissue, periodontal ligament, and alveolar bone characteristic of periodontitis. The inflammatory response is triggered by bacteria or their products that bind to pattern recognition receptors that induce transcription factor activity to stimulate cytokine and chemokine expression. Epithelial, fibroblast/stromal, and resident leukocytes play a key role in initiating the host response and contribute to periodontal disease. Single-cell RNA-seq (scRNA-seq) experiments have added new insight into the roles of various cell types in the response to bacterial challenge. This response is modified by systemic conditions such as diabetes and smoking. In contrast to periodontitis, orthodontic tooth movement (OTM) is a sterile inflammatory response induced by mechanical force. Orthodontic force application stimulates acute inflammatory responses in the periodontal ligament and alveolar bone stimulated by cytokines and chemokines that produce bone resorption on the compression side. On the tension side, orthodontic forces induce the production of osteogenic factors, stimulating new bone formation. A number of different cell types, cytokines, and signaling/pathways are involved in this complex process. Inflammatory and mechanical force-induced bone remodeling involves bone resorption and bone formation. The interaction of leukocytes with host stromal cells and osteoblastic cells plays a key role in both initiating the inflammatory events as well as inducing a cellular cascade that results in remodeling in orthodontic tooth movement or in tissue destruction in periodontitis.
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Affiliation(s)
- Bushra Alghamdi
- Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
- Department of Restorative Dental Sciences, College of Dentistry, Taibah University, Medina, 42353, Kingdom of Saudi Arabia
| | - Hyeran Helen Jeon
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jia Ni
- Department of Periodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Dongxu Qiu
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Alyssia Liu
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Julie J Hong
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Mamoon Ali
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Albert Wang
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Michael Troka
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Dana T Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA.
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12
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Zysk W, Gleń J, Trzeciak M. Current Insight into the Role of IL-35 and Its Potential Involvement in the Pathogenesis and Therapy of Atopic Dermatitis. Int J Mol Sci 2022; 23:ijms232415709. [PMID: 36555351 PMCID: PMC9779445 DOI: 10.3390/ijms232415709] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/02/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Interleukin 35 (IL-35), a new member of the IL-12 family of heterodimeric cytokines, could induce two different types of regulatory cells including regulatory T and B cells such as IL-35-induced regulatory T cells and IL-10-producing regulatory B cells (IL-10+Bregs), and IL-35-producing regulatory B cells (IL-35+Bregs). These cells appear to play an important role in modulating the immune system in numerous diseases. Several findings suggested that the expression of IL-35 is dysregulated in many autoimmune, inflammatory, and allergic diseases. Due to the functions of IL-35, it seems that this cytokine may act as an efficient therapeutic strategy for numerous conditions including atopic dermatitis (AD). We aimed to provide a comprehensive overview of the role of IL-35 in modulating the immune system. Additionally, we highlight IL-35 as a specific immunological target, discuss its possible involvement in the pathogenesis of AD, and hypothesize that IL-35 may become a novel target for the treatment of AD. However, further studies are required to evaluate this hypothesis.
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Affiliation(s)
- Weronika Zysk
- Dermatological Students Scientific Association, Department of Dermatology, Venereology and Allergology, Faculty of Medicine, Medical University of Gdansk, 80-214 Gdańsk, Poland
| | - Jolanta Gleń
- Department of Dermatology, Venereology and Allergology, Faculty of Medicine, Medical University of Gdansk, 80-214 Gdańsk, Poland
| | - Magdalena Trzeciak
- Department of Dermatology, Venereology and Allergology, Faculty of Medicine, Medical University of Gdansk, 80-214 Gdańsk, Poland
- Correspondence: ; Tel.: +48-58-584-40-10
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13
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Allergen immunotherapy, cancer, and immune disorders. Curr Opin Allergy Clin Immunol 2022; 22:428-434. [PMID: 36165426 DOI: 10.1097/aci.0000000000000858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
PURPOSE OF REVIEW The purpose of this review is to provide an update on the intriguing relationships between allergies, allergen immunotherapy, cancer, and immune disorders. Allergic diseases and cancer are increasing in incidence and prevalence and a potential relationship, or not, between these diseases have been suggested for many years. RECENT FINDINGS Recent findings suggest that there may be some causative effects between certain types of cancer and allergic diseases, as described in the text. Some types of cancer may be more linked to the presence of an allergic disease, than others. However, epigenetic factors, such as tobacco smoke alcohol and toxic substances should also be taken into consideration. SUMMARY The association between allergy and cancer is complex and depends on the specific allergy and the specific organ under consideration. Regarding pancreatic cancer, colorectal cancer (CRC), and glioma, all types of allergies were shown to be a protective factor. Conversely, asthma is a risk factor for lung cancer as is atopic dermatitis for skin cancer. Despite extensive research, no definite relationship has been determined, and no clear relationship, either positive or negative, to allergies can be observed. These results should be corroborated with large epidemiological well designed prospective studies due to some weaknesses in the previous investigations.
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14
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Sanders JM, Jeyamogan S, Mathew JM, Leventhal JR. Foxp3+ regulatory T cell therapy for tolerance in autoimmunity and solid organ transplantation. Front Immunol 2022; 13:1055466. [PMID: 36466912 PMCID: PMC9714335 DOI: 10.3389/fimmu.2022.1055466] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/02/2022] [Indexed: 08/03/2023] Open
Abstract
Regulatory T cells (Tregs) are critical for tolerance in humans. The exact mechanisms by which the loss of peripheral tolerance leads to the development of autoimmunity and the specific role Tregs play in allograft tolerance are not fully understood; however, this population of T cells presents a unique opportunity in the development of targeted therapeutics. In this review, we discuss the potential roles of Foxp3+ Tregs in the development of tolerance in transplantation and autoimmunity, and the available data regarding their use as a treatment modality.
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Affiliation(s)
- Jes M. Sanders
- Department of Surgery, Comprehensive Transplant Center Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Shareni Jeyamogan
- Department of Surgery, Comprehensive Transplant Center Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - James M. Mathew
- Department of Surgery, Comprehensive Transplant Center Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
- Simpson Querrey Institute for BioNanotechnology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Joseph R. Leventhal
- Department of Surgery, Comprehensive Transplant Center Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
- Simpson Querrey Institute for BioNanotechnology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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15
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Santambrogio L, Franco A. The yin/yang balance of the MHC-self -immunopeptidome. Front Immunol 2022; 13:1035363. [PMID: 36405763 PMCID: PMC9666884 DOI: 10.3389/fimmu.2022.1035363] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/07/2022] [Indexed: 07/22/2023] Open
Abstract
The MHC-self immunopeptidome of professional antigen presenting cells is a cognate ligand for the TCRs expressed on both conventional and thymic-derived natural regulatory T cells. In regulatory T cells, the TCR signaling associated with MHC-peptide recognition induces antigen specific as well as bystander immunosuppression. On the other hand, TCR activation of conventional T cells is associated with protective immunity. As such the peripheral T cell repertoire is populated by a number of T cells with different phenotypes and different TCRs, which can recognize the same MHC-self-peptide complex, resulting in opposite immunological outcomes. This article summarizes what is known about regulatory and conventional T cell recognition of the MHC-self-immunopeptidome at steady state and in inflammatory conditions associated with increased T and B cell self-reactivity, discussing how changes in the MHC-ligandome including epitope copy number and post-translational modifications can tilt the balance toward the expansion of pro-inflammatory or regulatory T cells.
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Affiliation(s)
- Laura Santambrogio
- Department of Radiation Oncology, Physiology and Biophysics, Englander Institute of Precision Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Alessandra Franco
- University of California San Diego School of Medicine, Department of Pediatrics, La Jolla, CA, United States
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16
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Regulatory T cell niche in the bone marrow, a new player in Haematopoietic stem cell transplantation. Blood Rev 2022; 59:101030. [PMID: 36336520 DOI: 10.1016/j.blre.2022.101030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 10/03/2022] [Accepted: 10/26/2022] [Indexed: 11/20/2022]
Abstract
Challenges in haematopoietic stem cell transplantation such as low bone marrow (BM) engraftment, graft versus host disease (GvHD) and the need for long-term immunosuppression could be addressed using T regulatory cells (Tregs) resident in the tissue of interest, in this case, BM Tregs. Controlling the adverse immune response in haematopoietic stem cell transplantation (HSCT) and minimising the associated risks such as infection and secondary cancers due to long-term immunosuppression is a crucial aspect of clinical practice in this field. While systemic immunosuppressive therapy could achieve reasonable GvHD control in most patients, related side effects remain the main limiting factor. Developing more targeted immunosuppressive strategies is an unmet clinical need and is the focus of several ongoing research projects. Tregs are a non-redundant sub-population of CD4+ T cells essential for controlling the immune homeostasis. Tregs are known to be reduced in number and function in autoimmune conditions. There is considerable interest in these cells as cell therapy products since they can be expanded in vitro and infused into patients. These trials have found Treg therapy to be safe, well-tolerated, and with some early signs of efficacy. However, Tregs are a heterogeneous subpopulation of T cells, and several novel subpopulations have been identified in recent years beyond the conventional thymic (tTregs) and peripheral (pTregs). There is increasing evidence for the presence of resident and tissue-specific Tregs. Bone marrow (BM) Tregs are one example of tissue-resident Tregs. BM Tregs are enriched within the marrow, serving a dual function of immunosuppression and maintenance of haematopoietic stem cells (HSCs). HSCs maintenance is achieved through direct suppression of HSCs differentiation, maintaining a proliferating pool of HSCs, and promoting the development of functional stromal cells that support HSCs. In this review, we will touch upon the biology of Tregs, focusing on their development and heterogeneity. We will focus on the BM Tregs from their biology to their therapeutic potential, focusing on their use in HSCT.
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17
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Cervantes O, Talavera IC, Every E, Coler B, Li M, Li A, Li H, Adams Waldorf K. Role of hormones in the pregnancy and sex-specific outcomes to infections with respiratory viruses. Immunol Rev 2022; 308:123-148. [PMID: 35373371 PMCID: PMC9189035 DOI: 10.1111/imr.13078] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 01/13/2023]
Abstract
Pregnant women infected with pathogenic respiratory viruses, such as influenza A viruses (IAV) and coronaviruses, are at higher risk for mortality, hospitalization, preterm birth, and stillbirth. Several factors are likely to contribute to the susceptibility of pregnant individuals to severe lung disease including changes in pulmonary physiology, immune defenses, and effector functions of some immune cells. Pregnancy is also a physiologic state characterized by higher levels of multiple hormones that may impact the effector functions of immune cells, such as progesterone, estrogen, human chorionic gonadotropin, prolactin, and relaxin. Each of these hormones acts to support a tolerogenic immune state of pregnancy, which helps prevent fetal rejection, but may also contribute to an impaired antiviral response. In this review, we address the unique role of adaptive and innate immune cells in the control of pathogenic respiratory viruses and how pregnancy and specific hormones can impact their effector actions. We highlight viruses with sex-specific differences in infection outcomes and why pregnancy hormones may contribute to fetal protection but aid the virus at the expense of the mother's health.
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Affiliation(s)
- Orlando Cervantes
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Irene Cruz Talavera
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Emma Every
- University of Washington School of Medicine, Spokane, Washington, United States of America
| | - Brahm Coler
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Elson S. Floyd College of Medicine, Washington State University, Spokane, Washington, United States of America
| | - Miranda Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Department of Biological Sciences, Columbia University, New York City, New York, United States of America
| | - Amanda Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Case Western Reserve, Cleveland, Ohio, United States of America
| | - Hanning Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Kristina Adams Waldorf
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
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18
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Huang J, Li Z, Hu Y, Li Z, Xie Y, Huang H, Chen Q, Chen G, Zhu W, Chen Y, Su W, Chen X, Liang D. Melatonin, an endogenous hormone, modulates Th17 cells via the reactive-oxygen species/TXNIP/HIF-1α axis to alleviate autoimmune uveitis. J Neuroinflammation 2022; 19:124. [PMID: 35624485 PMCID: PMC9145533 DOI: 10.1186/s12974-022-02477-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 05/15/2022] [Indexed: 11/25/2022] Open
Abstract
Background Melatonin, an indoleamine produced by the pineal gland, plays a pivotal role in maintaining circadian rhythm homeostasis. Recently, the strong antioxidant and anti-inflammatory properties of melatonin have attracted attention of researchers. We evaluated the therapeutic efficacy of melatonin in experimental autoimmune uveitis (EAU), which is a representative animal model of human autoimmune uveitis. Methods EAU was induced in mice via immunization with the peptide interphotoreceptor retinoid binding protein 1–20 (IRBP1–20). Melatonin was then administered via intraperitoneal injection to induce protection against EAU. With EAU induction for 14 days, clinical and histopathological scores were graded to evaluate the disease progression. T lymphocytes accumulation and the expression of inflammatory cytokines in the retinas were assessed via flow cytometry and RT-PCR, respectively. T helper 1 (Th1), T helper 17 (Th17), and regulatory T (Treg) cells were detected via flow cytometry for both in vivo and in vitro experiments. Reactive-oxygen species (ROS) from CD4 + T cells was tested via flow cytometry. The expression of thioredoxin-interacting protein (TXNIP) and hypoxia-inducible factor 1 alpha (HIF-1α) proteins were quantified via western blot. Results Melatonin treatment resulted in notable attenuation of ocular inflammation in EAU mice, evidenced by decreasing optic disc edema, few signs of retinal vasculitis, and minimal retinal and choroidal infiltrates. Mechanistic studies revealed that melatonin restricted the proliferation of peripheral Th1 and Th17 cells by suppressing their transcription factors and potentiated Treg cells. In vitro studies corroborated that melatonin restrained the polarization of retina-specific T cells towards Th17 and Th1 cells in addition to enhancing the proportion of Treg cells. Pretreatment of retina-specific T cells with melatonin failed to induce EAU in naïve recipients. Furthermore, the ROS/ TXNIP/ HIF-1α pathway was shown to mediate the therapeutic effect of melatonin in EAU. Conclusions Melatonin regulates autoimmune T cells by restraining effector T cells and facilitating Treg generation, indicating that melatonin could be a hopeful treatment alternative for autoimmune uveitis. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02477-z.
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Affiliation(s)
- Jun Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Zhuang Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Yunwei Hu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Zuoyi Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Yanyan Xie
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Haixiang Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Qian Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Guanyu Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Wenjie Zhu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Yuxi Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Wenru Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China
| | - Xiaoqing Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China.
| | - Dan Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratoryof Ophthalmologyand VisualScience, Sun Yat-Sen University, Guangzhou, 510060, China.
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19
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Role of T Regulatory Cells and Myeloid-Derived Suppressor Cells in COVID-19. J Immunol Res 2022; 2022:5545319. [PMID: 35497875 PMCID: PMC9042623 DOI: 10.1155/2022/5545319] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/13/2022] [Accepted: 03/28/2022] [Indexed: 01/08/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19) has been raised as a pandemic disease since December 2019. Immunosuppressive cells including T regulatory cells (Tregs) and myeloid-derived suppressor cells (MDSCs) are key players in immunological tolerance and immunoregulation; however, they contribute to the pathogenesis of different diseases including infections. Tregs have been shown to impair the protective role of CD8+ T lymphocytes against viral infections. In COVID-19 patients, most studies reported reduction, while few other studies found elevation in Treg levels. Moreover, Tregs have a dual role, depending on the different stages of COVID-19 disease. At early stages of COVID-19, Tregs have a critical role in decreasing antiviral immune responses, and consequently reducing the viral clearance. On the other side, during late stages, Tregs reduce inflammation-induced organ damage. Therefore, inhibition of Tregs in early stages and their expansion in late stages have potentials to improve clinical outcomes. In viral infections, MDSC levels are highly increased, and they have the potential to suppress T cell proliferation and reduce viral clearance. Some subsets of MDSCs are expanded in the blood of COVID-19 patients; however, there is a controversy whether this expansion has pathogenic or protective effects in COVID-19 patients. In conclusion, further studies are required to investigate the role and function of immunosuppressive cells and their potentials as prognostic biomarkers and therapeutic targets in COVID-19 patients.
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20
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Li H, Guan Y, Han C, Zhang Y, Chen Y, Jiang L, Zhang P, Chen X, Wei W, Ma Y. Dominant negative TGF-β receptor type II in T lymphocytes promotes anti-tumor immunity by modulating T cell subsets and enhancing CTL responses. Biomed Pharmacother 2022; 148:112754. [PMID: 35228061 DOI: 10.1016/j.biopha.2022.112754] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/19/2022] [Accepted: 02/23/2022] [Indexed: 11/17/2022] Open
Abstract
Transforming growth factor-β (TGF-β) is a multifunctional regulatory cytokine that maintains tolerance in the immune system by regulating the proliferation, differentiation and survival of lymphocytes. TGF-β blockade therapy for cancer has achieved some results but shows limited efficacy and side effects because these drugs are not selective and act on various types of cells throughout the body. We demonstrate here that dominant negative TGF-β receptor type II specifically targeting T cells decreases tumor load in tumor-bearing mice. In addition, the dominant negative TGF-β receptor type II promotes the proliferation and differentiation of T cells and increases the expression of T-bet, which in turn promotes the secretion of granzyme A, granzyme B, perforin and IFN-γ secreted by T cells, and enhances the cytotoxicity and anti-tumor effects of T cells. Moreover, we also found that dominant negative TGF-β receptor type II reduces the proportion of regulatory T cells (Tregs) in tumor tissue and spleen of tumor-bearing mice. Co-culture experiments with T cells and tumor cells revealed that dominant negative TGF-β receptor type II inhibited tumor cell proliferation and increased apoptosis. Our results indicate that specifically inhibiting TGF-β receptor type II in T cells increases anti-tumor immunity and has a strong therapeutic potential.
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Affiliation(s)
- Hao Li
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Yanling Guan
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Chenchen Han
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Yu Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Yizhao Chen
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Liping Jiang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Pingping Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Xiu Chen
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China.
| | - Yang Ma
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China.
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21
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Human CD4 +CD45RA + T Cells Behavior after In Vitro Activation: Modulatory Role of Vasoactive Intestinal Peptide. Int J Mol Sci 2022; 23:ijms23042346. [PMID: 35216459 PMCID: PMC8878027 DOI: 10.3390/ijms23042346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/11/2022] [Accepted: 02/17/2022] [Indexed: 11/30/2022] Open
Abstract
Naїve CD4+ T cells, which suffer different polarizing signals during T cell receptor activation, are responsible for an adequate immune response. In this study, we aimed to evaluate the behavior of human CD4+CD45RA+ T cells after in vitro activation by anti-CD3/CD28 bead stimulation for 14 days. We also wanted to check the role of the VIP system during this process. The metabolic biomarker Glut1 was increased, pointing to an increase in glucose requirement whereas Hif-1α expression was higher in resting than in activated cells. Expression of Th1 markers increased at the beginning of activation, whereas Th17-associated biomarkers augmented after that, showing a pathogenic Th17 profile with a possible plasticity to Th17/1. Foxp3 mRNA expression augmented from day 4, but no parallel increases were observed in IL-10, IL-2, or TGFβ mRNA expression, meaning that these potential differentiated Treg could not be functional. Both VIP receptors were located on the plasma membrane, and expression of VPAC2 receptor increased significantly with respect to the VPAC1 receptor from day 4 of CD4+CD45RA+ T activation, pointing to a shift in VPAC receptors. VIP decreased IFNγ and IL-23R expression during the activation, suggesting a feasible modulation of Th17/1 plasticity and Th17 stabilization through both VPAC receptors. These novel results show that, without polarizing conditions, CD4+CD45RA+ T cells differentiate mainly to a pathogenic Th17 subset and an unpaired Treg subset after several days of activation. Moreover, they confirm the important immunomodulatory role of VIP, also on naїve Th cells, stressing the importance of this neuropeptide on lymphocyte responses in different pathological or non-pathological situations.
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22
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Mucosal tissue regulatory T cells are integral in balancing immunity and tolerance at portals of antigen entry. Mucosal Immunol 2022; 15:398-407. [PMID: 34845322 PMCID: PMC8628059 DOI: 10.1038/s41385-021-00471-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 10/19/2021] [Accepted: 11/03/2021] [Indexed: 02/04/2023]
Abstract
Foxp3+ regulatory T cells (Tregs) are a subset of CD4+ T cells that exert suppressive control over other immune cells. Tregs are critical for preventing systemic autoimmunity and maintaining peripheral tolerance, and yet they also assist in orchestration of immunity to pathogenic insult, wherein they limit collateral immunopathology and assist in facilitating a fine balance between immune tolerance and effector activity. Tregs have been extensively studied in lymphoid tissues, and a growing body of work has characterized phenotypically distinct Tregs localized in various nonlymphoid tissue compartments. These tissue Tregs can perform location-specific, alternative functions, highlighting their dynamic, context-dependent roles. Tregs have also been identified in mucosal tissues where specialized physiological functions are paramount, including helping the host to respond appropriately to pathogenic versus innocuous antigens that are abundant at mucosal portals of antigen entry. As in other tissue Treg compartments, mucosal Tregs in the respiratory, gastrointestinal, and genitourinary tracts are distinct from circulating counterparts and can carry out mucosa-specific functions as well as classic suppressive functions that are the hallmark of Tregs. In this review, we summarize current knowledge regarding mucosal Tregs in both health and disease.
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23
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Zhou Y, Dang J, Chen Y, Zheng SG, Du J. Microstructure and mechanical behaviors of tibia for collagen-induced arthritic mice treated with gingiva-derived mesenchymal stem cells. J Mech Behav Biomed Mater 2021; 124:104719. [PMID: 34481308 DOI: 10.1016/j.jmbbm.2021.104719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/09/2021] [Accepted: 07/14/2021] [Indexed: 10/20/2022]
Abstract
Rheumatoid arthritis (RA) is a systemic polyarticular arthritis that primarily affects the small joints but also causes bone erosion in large joints. None of the currently existing treatment approaches is curable. In this study, the effects of human gingiva-derived mesenchymal stem cells (GMSCs) on collagen-induced arthritis (CIA) mice are examined by experimentally assessing the microstructure and mechanical behaviors of tibia. Bone morphology and mineral density of mouse tibiae were assessed using micro-X-ray computed tomography (micro-CT). Compression testing was performed on mouse tibia to access its stiffness. The deformation and strain localized inside proximal tibia were mapped using mechanical testing coupled with micro-CT and digital volume correlation of micro-CT images. The results show that CIA disease caused bone erosion in epiphyseal cortical bone, which manifested into the adjacent epiphyseal trabecular bone, and also affected the metaphyseal cortical bone. CIA disease also weakened the load-bearing function of proximal tibia. GMSC treatment interfered with the progress of CIA, attenuated the bone erosion in epiphyseal and metaphyseal trabecular bone and resulted in improved load-bearing function of proximal tibia. GMSCs provide a promising potential treatment of autoimmune arthritis.
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Affiliation(s)
- Yuxiao Zhou
- Department of Mechanical Engineering, Pennsylvania State University, University Park, PA, USA.
| | - Junlong Dang
- Department of Clinical Immunology, Third Affiliated Hospital at the Sun Yat-sen University, Guangzhou, China.
| | - Ye Chen
- Division of Rheumatology and Immunology, Department of Internal Medicine at Ohio State University of Medicine and Wexner Medical Center, Columbus, OH, USA.
| | - Song Guo Zheng
- Division of Rheumatology and Immunology, Department of Internal Medicine at Ohio State University of Medicine and Wexner Medical Center, Columbus, OH, USA.
| | - Jing Du
- Department of Mechanical Engineering, Pennsylvania State University, University Park, PA, USA.
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24
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Xu H, Wu L, Nguyen HH, Mesa KR, Raghavan V, Episkopou V, Littman DR. Arkadia-SKI/SnoN signaling differentially regulates TGF-β-induced iTreg and Th17 cell differentiation. J Exp Med 2021; 218:212614. [PMID: 34473197 PMCID: PMC8421263 DOI: 10.1084/jem.20210777] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/29/2021] [Accepted: 08/19/2021] [Indexed: 12/22/2022] Open
Abstract
TGF-β signaling is fundamental for both Th17 and regulatory T (Treg) cell differentiation. However, these cells differ in requirements for downstream signaling components, such as SMAD effectors. To further characterize mechanisms that distinguish TGF-β signaling requirements for Th17 and Treg cell differentiation, we investigated the role of Arkadia (RNF111), an E3 ubiquitin ligase that mediates TGF-β signaling during development. Inactivation of Arkadia in CD4+ T cells resulted in impaired Treg cell differentiation in vitro and loss of RORγt+FOXP3+ iTreg cells in the intestinal lamina propria, which increased susceptibility to microbiota-induced mucosal inflammation. In contrast, Arkadia was dispensable for Th17 cell responses. Furthermore, genetic ablation of two Arkadia substrates, the transcriptional corepressors SKI and SnoN, rescued Arkadia-deficient iTreg cell differentiation both in vitro and in vivo. These results reveal distinct TGF-β signaling modules governing Th17 and iTreg cell differentiation programs that could be targeted to selectively modulate T cell functions.
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Affiliation(s)
- Hao Xu
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY
| | - Lin Wu
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY
| | - Henry H Nguyen
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY
| | - Kailin R Mesa
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY
| | - Varsha Raghavan
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY
| | | | - Dan R Littman
- The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, NY.,Howard Hughes Medical Institute, New York, NY
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25
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Chen YH, Lightman S, Calder VL. CD4 + T-Cell Plasticity in Non-Infectious Retinal Inflammatory Disease. Int J Mol Sci 2021; 22:9584. [PMID: 34502490 PMCID: PMC8431487 DOI: 10.3390/ijms22179584] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 01/14/2023] Open
Abstract
Non-infectious uveitis (NIU) is a potentially sight-threatening disease. Effector CD4+ T cells, especially interferon-γ-(IFNγ) producing Th1 cells and interleukin-17-(IL-17) producing Th17 cells, are the major immunopathogenic cells, as demonstrated by adoptive transfer of disease in a model of experimental autoimmune uveitis (EAU). CD4+FoxP3+CD25+ regulatory T cells (Tregs) were known to suppress function of effector CD4+ T cells and contribute to resolution of disease. It has been recently reported that some CD4+ T-cell subsets demonstrate shared phenotypes with another CD4+ T-cell subset, offering the potential for dual function. For example, Th17/Th1 (co-expressing IFNγ and IL-17) cells and Th17/Treg (co-expressing IL-17 and FoxP3) cells have been identified in NIU and EAU. In this review, we have investigated the evidence as to whether these 'plastic CD4+ T cells' are functionally active in uveitis. We conclude that Th17/Th1 cells are generated locally, are resistant to the immunosuppressive effects of steroids, and contribute to early development of EAU. Th17/Treg cells produce IL-17, not IL-10, and act similar to Th17 cells. These cells were considered pathogenic in uveitis. Future studies are needed to better clarify their function, and in the future, these cell subsets may in need to be taken into consideration for designing treatment strategies for disease.
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Affiliation(s)
- Yi-Hsing Chen
- UCL Institute of Ophthalmology, University College London, London EC1V 9EL, UK; (Y.-H.C.); (S.L.)
- Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Sue Lightman
- UCL Institute of Ophthalmology, University College London, London EC1V 9EL, UK; (Y.-H.C.); (S.L.)
| | - Virginia L. Calder
- UCL Institute of Ophthalmology, University College London, London EC1V 9EL, UK; (Y.-H.C.); (S.L.)
- NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust, London EC1V 2PD, UK
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26
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Melnik BC, Stremmel W, Weiskirchen R, John SM, Schmitz G. Exosome-Derived MicroRNAs of Human Milk and Their Effects on Infant Health and Development. Biomolecules 2021; 11:biom11060851. [PMID: 34200323 PMCID: PMC8228670 DOI: 10.3390/biom11060851] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 05/29/2021] [Accepted: 06/01/2021] [Indexed: 11/16/2022] Open
Abstract
Multiple biologically active components of human milk support infant growth, health and development. Milk provides a wide spectrum of mammary epithelial cell-derived extracellular vesicles (MEVs) for the infant. Although the whole spectrum of MEVs appears to be of functional importance for the growing infant, the majority of recent studies report on the MEV subfraction of milk exosomes (MEX) and their miRNA cargo, which are in the focus of this review. MEX and the dominant miRNA-148a play a key role in intestinal maturation, barrier function and suppression of nuclear factor-κB (NF-κB) signaling and may thus be helpful for the prevention and treatment of necrotizing enterocolitis. MEX and their miRNAs reach the systemic circulation and may impact epigenetic programming of various organs including the liver, thymus, brain, pancreatic islets, beige, brown and white adipose tissue as well as bones. Translational evidence indicates that MEX and their miRNAs control the expression of global cellular regulators such as DNA methyltransferase 1-which is important for the up-regulation of developmental genes including insulin, insulin-like growth factor-1, α-synuclein and forkhead box P3-and receptor-interacting protein 140, which is important for the regulation of multiple nuclear receptors. MEX-derived miRNA-148a and miRNA-30b may stimulate the expression of uncoupling protein 1, the key inducer of thermogenesis converting white into beige/brown adipose tissue. MEX have to be considered as signalosomes derived from the maternal lactation genome emitted to promote growth, maturation, immunological and metabolic programming of the offspring. Deeper insights into milk's molecular biology allow the conclusion that infants are both "breast-fed" and "breast-programmed". In this regard, MEX miRNA-deficient artificial formula is not an adequate substitute for breastfeeding, the birthright of all mammals.
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Affiliation(s)
- Bodo C. Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, D-49076 Osnabrück, Germany;
- Correspondence: ; Tel.: +49-5241-988060
| | - Wolfgang Stremmel
- Private Praxis for Internal Medicine, Beethovenstraße 2, D-76530 Baden-Baden, Germany;
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), RWTH University Hospital Aachen, D-52074 Aachen, Germany;
| | - Swen Malte John
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, D-49076 Osnabrück, Germany;
- Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm), University of Osnabrück, D-49076 Osnabrück, Germany
| | - Gerd Schmitz
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital of Regensburg, University of Regensburg, D-93053 Regensburg, Germany;
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27
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Jiang Q, Yang G, Liu Q, Wang S, Cui D. Function and Role of Regulatory T Cells in Rheumatoid Arthritis. Front Immunol 2021; 12:626193. [PMID: 33868244 PMCID: PMC8047316 DOI: 10.3389/fimmu.2021.626193] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
Rheumatoid arthritis (RA) is a systemic and heterogeneous autoimmune disease with symmetrical polyarthritis as its critical clinical manifestation. The basic cause of autoimmune diseases is the loss of tolerance to self or harmless antigens. The loss or functional deficiency of key immune cells, regulatory T (Treg) cells, has been confirmed in human autoimmune diseases. The pathogenesis of RA is complex, and the dysfunction of Tregs is one of the proposed mechanisms underlying the breakdown of self-tolerance leading to the progression of RA. Treg cells are a vital component of peripheral immune tolerance, and the transcription factor Foxp3 plays a major immunosuppressive role. Clinical treatment for RA mainly utilizes drugs to alleviate the progression of disease and relieve disease activity, and the ideal treatment strategy should be to re-induce self-tolerance before obvious tissue injury. Treg cells are one of the ideal options. This review will introduce the classification, mechanism of action, and characteristics of Treg cells in RA, which provides insights into clinical RA treatment.
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Affiliation(s)
- Qi Jiang
- Department of Blood Transfusion, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Guocan Yang
- Department of Blood Transfusion, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Qi Liu
- Department of Blood Transfusion, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Shengjun Wang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, China.,Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Dawei Cui
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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28
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Oberholtzer N, Atkinson C, Nadig SN. Adoptive Transfer of Regulatory Immune Cells in Organ Transplantation. Front Immunol 2021; 12:631365. [PMID: 33737934 PMCID: PMC7960772 DOI: 10.3389/fimmu.2021.631365] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/18/2021] [Indexed: 12/13/2022] Open
Abstract
Chronic graft rejection remains a significant barrier to solid organ transplantation as a treatment for end-organ failure. Patients receiving organ transplants typically require systemic immunosuppression in the form of pharmacological immunosuppressants for the duration of their lives, leaving these patients vulnerable to opportunistic infections, malignancies, and other use-restricting side-effects. In recent years, a substantial amount of research has focused on the use of cell-based therapies for the induction of graft tolerance. Inducing or adoptively transferring regulatory cell types, including regulatory T cells, myeloid-derived suppressor cells, and IL-10 secreting B cells, has the potential to produce graft-specific tolerance in transplant recipients. Significant progress has been made in the optimization of these cell-based therapeutic strategies as our understanding of their underlying mechanisms increases and new immunoengineering technologies become more widely available. Still, many questions remain to be answered regarding optimal cell types to use, appropriate dosage and timing, and adjuvant therapies. In this review, we summarize what is known about the cellular mechanisms that underly the current cell-based therapies being developed for the prevention of allograft rejection, the different strategies being explored to optimize these therapies, and all of the completed and ongoing clinical trials involving these therapies.
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Affiliation(s)
- Nathaniel Oberholtzer
- Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - Carl Atkinson
- Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - Satish N Nadig
- Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
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29
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Adipose Tissue T Regulatory Cells: Implications for Health and Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:125-139. [PMID: 33523447 DOI: 10.1007/978-981-15-6407-9_8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Obesity dramatically increases the risk of numerous conditions, including type 2 diabetes mellitus and other components of the metabolic syndrome. Pro-inflammatory changes that occur in adipose tissue are critical to the pathogenesis of these obesity-induced complications. Adipose tissue is one of the body's largest endocrine organs, and the cells that comprise the adipose tissue immunoenvironment secrete multiple factors (including adipokines and cytokines) that impact systemic metabolism. In particular, immunosuppressive regulatory T cells (Tregs) decline in obesity, partly in response to its complex interaction with adipocytes, and this decline contributes to disruption of the typical homeostasis observed in lean adipose tissue. Although the regulation of Treg differentiation, function, and enrichment is incompletely understood, factors including various cell-surface co-stimulatory molecules, certain lipid species, and cytokines such as PPARγ, adiponectin, and leptin are important mediators. It is also clear that there may be depot-specific differences in Tregs, rendering adipose tissue Tregs distinct from lymphoid or circulating Tregs, with implications on maintenance and functionality. While most of these findings are derived from studies in murine models, comparatively little is known about the human adipose tissue Treg signature, which requires further investigation.
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30
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Dong Y, Pan F. Ubiquitin-Dependent Regulation of Treg Function and Plasticity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:63-80. [PMID: 33523443 DOI: 10.1007/978-981-15-6407-9_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
As an indispensable part of peripheral tolerance, regulatory T (Treg) cells play an important role in immune homeostasis by suppressing other immune cells. Behind this function is a complex network of transcription factors and signaling cascades that regulates the function and plasticity of regulatory T cells. Among these, Forkhead box P3 (Foxp3) is considered as the master transcription factor, and its stability will influence the function and viability of Treg cells. Because of this, understanding the mechanisms that regulate Foxp3 and its co-regulators will provide more understanding to Treg cells and uncover more targets to manipulate Treg cells in treating autoimmune diseases, organ transplantation, and tumor. Interestingly, several recent studies show that ubiquitin-dependent pathways are important regulators of Foxp3, which suggest both great scientific and therapeutic values. In this chapter, we cover emerging evidence of ubiquitin-dependent, posttranslational regulation of Treg function and plasticity.
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Affiliation(s)
- Yi Dong
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Fan Pan
- Center for Cancer Immunology Research, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China.
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31
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Deng B, Zhang W, Zhu Y, Li Y, Li D, Li B. FOXP3 + regulatory T cells and age-related diseases. FEBS J 2021; 289:319-335. [PMID: 33529458 DOI: 10.1111/febs.15743] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 01/29/2021] [Indexed: 12/17/2022]
Abstract
Regulatory T (Treg) cells are critical for the maintenance of immune homeostasis. Dysregulation of Treg cells has been implicated in the pathogenesis of autoimmunity and chronic inflammation, while aging is characterized by an accumulation of inflammatory markers in the peripheral blood, a phenomenon known as 'inflammaging'. The relationship between Treg cells and age-related diseases remains to be further studied. Increasing evidence revealed that Treg cells' dysfunction occurs in aged patients, suggesting that immune therapies targeting Treg cells may be a promising approach to treat diseases such as cancers and autoimmune diseases. Furthermore, drugs targeting Treg cells show encouraging results and contribute to CD8+ T-cell-mediated cytotoxic killing of tumor and infected cells. In general, a better understanding of Treg cell function may help us to develop new immune therapies against aging. In this review, we discuss potential therapeutic strategies to modify immune responses of relevance for aging to prevent and treat age-related diseases, as well as the challenges posed by the translation of novel immune therapies into clinical practice.
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Affiliation(s)
- Biaolong Deng
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, China
| | - Weiqi Zhang
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, China
| | - Yicheng Zhu
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, China
| | - Yangyang Li
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, China
| | - Dan Li
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, China
| | - Bin Li
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, China
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32
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Zhou L, He X, Cai P, Li T, Peng R, Dang J, Li Y, Li H, Huang F, Shi G, Xie C, Lu Y, Chen Y. Induced regulatory T cells suppress Tc1 cells through TGF-β signaling to ameliorate STZ-induced type 1 diabetes mellitus. Cell Mol Immunol 2021; 18:698-710. [PMID: 33446887 DOI: 10.1038/s41423-020-00623-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/10/2020] [Indexed: 12/18/2022] Open
Abstract
Type 1 diabetes mellitus (T1D) is a chronic autoimmune condition in which the immune system destroys insulin-producing pancreatic β cells. In addition to well-established pathogenic effector T cells, regulatory T cells (Tregs) have also been shown to be defective in T1D. Thus, an increasing number of therapeutic approaches are being developed to target Tregs. However, the role and mechanisms of TGF-β-induced Tregs (iTregs) in T1D remain poorly understood. Here, using a streptozotocin (STZ)-induced preclinical T1D mouse model, we found that iTregs could ameliorate the development of T1D and preserve β cell function. The preventive effect was associated with the inhibition of type 1 cytotoxic T (Tc1) cell function and rebalancing the Treg/Tc1 cell ratio in recipients. Furthermore, we showed that the underlying mechanisms were due to the TGF-β-mediated combinatorial actions of mTOR and TCF1. In addition to the preventive role, the therapeutic effects of iTregs on the established STZ-T1D and nonobese diabetic (NOD) mouse models were tested, which revealed improved β cell function. Our findings therefore provide key new insights into the basic mechanisms involved in the therapeutic role of iTregs in T1D.
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Affiliation(s)
- Li Zhou
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China.,Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Xuemin He
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Peihong Cai
- Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Ting Li
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Rongdong Peng
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Junlong Dang
- Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Yue Li
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Haicheng Li
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Feng Huang
- Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Guojun Shi
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Chichu Xie
- Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China
| | - Yan Lu
- Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China.
| | - Yanming Chen
- Department of Endocrinology and Metabolism, Guangdong Provincial Key Laboratory of Diabetology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China.
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33
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Liu Y, Zhang Y, Zhang M, Meng J, Ma Q, Hao Z, Zheng M, Zhang L, Chen X, Liang C. Activated autophagy restored the impaired frequency and function of regulatory T cells in chronic prostatitis. Prostate 2021; 81:29-40. [PMID: 33085775 DOI: 10.1002/pros.24073] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 08/04/2020] [Accepted: 09/02/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Chronic prostatitis or chronic pelvic pain syndrome (CP/CPPS) is a disease with an unclear pathogenesis. Recent studies have reported that regulatory T (Treg) cells might be involved in the development of CP/CPPS. In this study we aimed to examine the functional role of Treg cells and explore the possible regulatory mechanism of Treg cells in CP/CPPS. METHODS An experimental autoimmune prostatitis (EAP) mouse model was constructed; the numbers and functions of Treg cells in the EAP and control groups were tested. Then, cell differentiation experiments were conducted to evaluate the regulatory effect of autophagy on Treg cell differentiation. Furthermore, autologous CD4+ CD25- cells and CD4+ CD25+ cells from the two groups were magnetically sorted and cocultured to observe differences in cellular inhibitory functions. Finally, in an in vivo experiment, rapamycin was intraperitoneally injected into EAP mice for 4 weeks to observe the therapeutic effects. RESULTS We found that the number and function of Treg cells in the EAP group were diminished compared to those in the control group. Meanwhile, the tolerance of pain in EAP mice had also decreased. Moreover, after using the autophagy activator rapamycin, the expression of the inflammatory cytokines interleukin-1β was decreased and the pain symptoms were alleviated. A mechanistic study found that autophagy activation promoted the differentiation of Treg and increased the suppressive functions of Treg cells, along with the elevated expression of GATA-3 and cytotoxic T lymphocyte antigen 4 (CTLA-4). Furthermore, in vivo administration of the autophagy activator rapamycin had similar effects on recovering the frequency and function of Treg cells as well as the expression of GATA-3 and CTLA-4. CONCLUSION The impaired frequency and function of Treg cells may contribute to the progression of CP/CPPS, and autophagy is a protective mechanism that promotes the differentiation of Treg cells and restores the suppressive functions of Treg cells. Autophagy may be a novel therapeutic option for patients with CP/CPPS.
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Affiliation(s)
- Yi Liu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Department of Urology, Institute of Urology, Anhui Medical University, Hefei, Anhui, China
| | - Yong Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Meng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Department of Urology, Institute of Urology, Anhui Medical University, Hefei, Anhui, China
| | - Jialin Meng
- Department of Urology, Institute of Urology, Anhui Medical University, Hefei, Anhui, China
| | - Qingqing Ma
- Department of Urology, Medical Research Center, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Zongyao Hao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Department of Urology, Institute of Urology, Anhui Medical University, Hefei, Anhui, China
| | - Meijuan Zheng
- Department of Urology, Medical Research Center, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Li Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Department of Urology, Institute of Urology, Anhui Medical University, Hefei, Anhui, China
| | - Xianguo Chen
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Department of Urology, Institute of Urology, Anhui Medical University, Hefei, Anhui, China
| | - Chaozhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Department of Urology, Institute of Urology, Anhui Medical University, Hefei, Anhui, China
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Huang Z, Li W, Su W. Tregs in Autoimmune Uveitis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:205-227. [PMID: 33523450 DOI: 10.1007/978-981-15-6407-9_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Uveitis is a chronic disease with relapsing and remitting ocular attack, which requires corticosteroids and systemic immunosuppression to prevent severe vision loss. Classically, uveitis is referred to an autoimmune disease, mediated by pro-inflammatory Th17 cells and immunosuppressive CD4+CD25+FoxP3+ T-regulatory cells (Tregs). More and more evidence indicates that Tregs are involved in development, resolution, and remission of uveitis. Clinically, many researchers have conducted quantitative and functional analyses of peripheral blood from patients with different subtypes of uveitis, in an attempt to find the changing rules of Tregs. Consistently, using the experimental autoimmune uveitis (EAU) model, researchers have explored the development and resolution mechanism of uveitis in many aspects. In addition, many drug and Tregs therapy investigations have yielded encouraging results. In this chapter, we introduced the current understanding of Tregs, summarized the clinical changes in the number and function of patients with uveitis and the immune mechanism of Tregs involved in EAU model, as well as discussed the progress and shortcomings of Tregs-related drug therapy and Tregs therapy. Although the exact mechanism of Tregs-mediated uveitis protection remains to be elucidated, the strategy of Tregs regulation may provide a specific and meaningful way for the prevention and treatment of uveitis.
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Affiliation(s)
- Zhaohao Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Wenli Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Wenru Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
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TNF-TNFR2 Signal Plays a Decisive Role in the Activation of CD4 +Foxp3 + Regulatory T Cells: Implications in the Treatment of Autoimmune Diseases and Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:257-272. [PMID: 33523452 DOI: 10.1007/978-981-15-6407-9_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The puzzling biphasic or dual roles of tumor necrosis factor α (TNF) in the inflammatory and immune responses are likely to be mediated by distinct signaling pathways transduced by one of its two receptors, e.g., TNF receptor type I (TNFR1) and TNF receptor type II (TNFR2). Unlike TNFR1 that is ubiquitously expressed on almost all types of cells, the expression of TNFR2 is rather restricted to certain types of cells, such as T lymphocytes. There is now compelling evidence that TNFR2 is preferentially expressed by CD4+Foxp3+ regulatory T cells (Tregs), and TNFR2 plays a decisive role in the activation, expansion, in vivo function, and phenotypical stability of Tregs. In this chapter, the current understanding of the molecular basis and signaling pathway of TNF-TNFRs signal is introduced. Latest studies that have further supported and substantiated the pivotal role of TNF-TNFR2 interaction in Tregs biology and its molecular basis are discussed. The research progress regarding TNFR2-targeting treatment for autoimmune diseases and cancer is analyzed. Future study should focus on the further understanding of molecular mechanism underlying Treg-stimulatory effect of TNFR2 signal, as well as on the translation of research findings into therapeutic benefits of human patients with autoimmune diseases, allergy, allograft rejection, and cancer.
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Regulation of Treg Functions by the Ubiquitin Pathway. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:47-62. [PMID: 33523442 DOI: 10.1007/978-981-15-6407-9_3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Regulatory T (Tregs) cells, required to maintain immune homeostasis, have significant power in disease outcomes. Treg dysfunction, predominantly characterized by the loss of the master transcription factor FoxP3 and the acquisition of Teff-like phenotypes, can promote autoimmunity as well as enhance anti-tumor immunity. As FoxP3 expression and stability are pinnacle for Treg suppressive functions, understanding the pathways that regulate FoxP3 is crucial to ascertain Treg-mediated therapies for autoimmune diseases and cancer. Mechanisms controlling FoxP3 expression and stability range from transcriptional to posttranslational, revealing multiple therapeutic opportunities. While many of the transcriptional pathways have been explored in detail, a recent surge in interest on the posttranslational mechanisms regulating FoxP3 has arisen. Particularly, the role of ubiquitination on Tregs both directly and indirectly involving FoxP3 has gained interest. Here, we summarize the current knowledge on ubiquitin-dependent, FoxP3-mediated control of Treg function as it pertains to human diseases.
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Kolb HR, Borcherding N, Zhang W. Understanding and Targeting Human Cancer Regulatory T Cells to Improve Therapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:229-256. [PMID: 33523451 DOI: 10.1007/978-981-15-6407-9_12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Regulatory T cells (Tregs) are critical in maintaining immune homeostasis under various pathophysiological conditions. A growing body of evidence demonstrates that Tregs play an important role in cancer progression and that they do so by suppressing cancer-directed immune responses. Tregs have been targeted for destruction by exploiting antibodies against and small-molecule inhibitors of several molecules that are highly expressed in Tregs-including immune checkpoint molecules, chemokine receptors, and metabolites. To date, these strategies have had only limited antitumor efficacy, yet they have also created significant risk of autoimmunity because most of them do not differentiate Tregs in tumors from those in normal tissues. Currently, immune checkpoint inhibitor (ICI)-based cancer immunotherapies have revolutionized cancer treatment, but the resistance to ICI is common and the elevation of Tregs is one of the most important mechanisms. Therapeutic strategies that can selectively eliminate Tregs in the tumor (i.e. therapies that do not run the risk of causing autoimmunity by affecting normal tissue), are urgently needed for the development of cancer immunotherapies. This chapter discusses specific properties of human Tregs under the context of cancer and the various ways to target Treg for cancer immunotherapy.
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Affiliation(s)
- H Ryan Kolb
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - Nicholas Borcherding
- Department of Pathology and Immunology, Washington University, St. Louis, MO, USA
| | - Weizhou Zhang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, USA.
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Abstract
Mucosal surfaces are distinctive sites exposed to environmental, dietary, and microbial antigens. Particularly in the gut, the host continuously actively adapts via complex interactions between the microbiota and dietary compounds and immune and other tissue cells. Regulatory T cells (Tregs) are critical for tuning the intestinal immune response to self- and non-self-antigens in the intestine. Its importance in intestinal homeostasis is illustrated by the onset of overt inflammation caused by deficiency in Treg generation, function, or stability in the gut. A substantial imbalance in Tregs has been observed in intestinal tissue during pathogenic conditions, when a tightly regulated and equilibrated system becomes dysregulated and leads to unimpeded and chronic immune responses. In this chapter, we compile and critically discuss the current knowledge on the key factors that promote Treg-mediated tolerance in the gut, such as those involved in intestinal Treg differentiation, specificity and suppressive function, and their immunophenotype during health and disease. We also discuss the current state of knowledge on Treg dysregulation in human intestine during pathological states such as inflammatory bowel disease (IBD), necrotizing enterocolitis (NEC), graft-versus-host disease (GVHD), and colorectal cancer (CRC), and how that knowledge is guiding development of Treg-targeted therapies to treat or prevent intestinal disorders.
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Bellanti JA, Li D. Treg Cells and Epigenetic Regulation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:95-114. [PMID: 33523445 DOI: 10.1007/978-981-15-6407-9_6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The discovery of the epigenetic regulation of Treg cells, a cell population with fundamental immunoregulatory properties, has shed considerable insights into an understanding of the role of these cells in health and disease. Research over the past several years has shown that the interaction of Treg cells with the gut microbiota are critical not only for the development of Treg function in health but also for abnormalities of Treg function that play a critical role in the pathogenesis of human diseases such as the allergic diseases, the autoimmune disorders, and cancer. The equilibrium between phenotypic plasticity and stability of Treg cells is defined by the fine-tuned transcriptional and epigenetic events required to ensure stable expression of Foxp3 in Treg cells. In this chapter, we discuss the molecular events that control Foxp3 gene expression and address the importance of DNA methylation as an important molecular switch that regulates the genetic expression of Treg induction and the possible implications of these findings for the treatment of human diseases characterized by abnormalities of Treg cell function.
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Affiliation(s)
- Joseph A Bellanti
- Department of Pediatrics, Georgetown University Medical Center, Washington, DC, USA. .,Department of Microbiology-Immunology, Georgetown University Medical Center, Washington, DC, USA. .,International Center for Interdisciplinary Studies of Immunology (ICISI), Georgetown University Medical Center, Washington, DC, USA.
| | - Dongmei Li
- Department of Microbiology-Immunology, Georgetown University Medical Center, Washington, DC, USA.,International Center for Interdisciplinary Studies of Immunology (ICISI), Georgetown University Medical Center, Washington, DC, USA
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Du Y, Fang Q, Zheng SG. Regulatory T Cells: Concept, Classification, Phenotype, and Biological Characteristics. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1278:1-31. [PMID: 33523440 DOI: 10.1007/978-981-15-6407-9_1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Regulatory T cells (Treg) play an indispensable role in maintaining the body's immune nonresponse to self-antigens and suppressing the body's unwarranted and potentially harmful immune responses. Their absence, reduction, dysfunction, transformation, and instability can lead to numerous autoimmune diseases. There are several distinct subtypes of the Treg cells, although they share certain biological characteristics and have unique phenotypes with different regulatory functions, as well as mechanistic abilities. In this book chapter, we introduce the latest advances in Treg cell subtypes pertaining to classification, phenotype, biological characteristics, and mechanisms. We also highlight the relationship between Treg cells and various diseases, including autoimmune, infectious, as well as tumors and organ transplants.
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Affiliation(s)
- Yang Du
- Department of Pathology and Physiopathology, Guilin Medical University, Guilin, Guangxi, China.,Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin, Guangxi, China
| | - Qiannan Fang
- Department of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Song-Guo Zheng
- Department of Internal Medicine, Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, USA.
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Regulatory T Cell Stability and Plasticity in Atherosclerosis. Cells 2020; 9:cells9122665. [PMID: 33322482 PMCID: PMC7764358 DOI: 10.3390/cells9122665] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/08/2020] [Accepted: 12/08/2020] [Indexed: 12/17/2022] Open
Abstract
Regulatory T cells (Tregs) express the lineage-defining transcription factor FoxP3 and play crucial roles in self-tolerance and immune homeostasis. Thymic tTregs are selected based on affinity for self-antigens and are stable under most conditions. Peripheral pTregs differentiate from conventional CD4 T cells under the influence of TGF-β and other cytokines and are less stable. Treg plasticity refers to their ability to inducibly express molecules characteristic of helper CD4 T cell lineages like T-helper (Th)1, Th2, Th17 or follicular helper T cells. Plastic Tregs retain FoxP3 and are thought to be specialized regulators for “their” lineage. Unstable Tregs lose FoxP3 and switch to become exTregs, which acquire pro-inflammatory T-helper cell programs. Atherosclerosis with systemic hyperlipidemia, hypercholesterolemia, inflammatory cytokines, and local hypoxia provides an environment that is likely conducive to Tregs switching to exTregs.
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Xiao ZX, Hu X, Jarjour W, Zheng SG. The role of B7 family members in the generation of Immunoglobulin. J Leukoc Biol 2020; 109:377-382. [PMID: 33118237 DOI: 10.1002/jlb.1mr0420-003rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 04/08/2020] [Accepted: 04/15/2020] [Indexed: 10/23/2022] Open
Abstract
Ig is a Y-shaped protein produced by plasma cells and exerts multiple functions in humoral immunity. There are five groups of Igs including IgA, IgD, IgE, IgG, and IgM, which differ in their heavy chain class. The primary function of Igs includes the neutralization of extrinsic pathogens, agglutination of foreign cells for phagocytosis, precipitation of soluble antigens in serum, and complement fixation. The B cells activated by antigen(s) can differentiate into antibody-producing cells that are called plasma cells and usually matured in the germinal center (GC). Follicular T helper (Tfh) cells crosstalk with antigen-presenting cells and play a crucial role in the development of the GC. Moreover, Tfh cells regulate trafficking through the GC to allow formative interaction with GC B cells that ultimately results in affinity maturation, B-cell memory, and Ig class switching. The B7 family is a series of number of structurally related membrane proteins that bind with a specific receptor to deliver costimulatory or co-inhibitory signals that regulate the activation of T cells in GC. Here, we review and summarize the recent advance of the effects of B7 family members on Ig production and relative diseases.
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Affiliation(s)
- Ze Xiu Xiao
- Institute of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xiaojiang Hu
- Institute of Clinical Immunology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Wael Jarjour
- Department of Internal Medicine, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, USA
| | - Song Guo Zheng
- Department of Internal Medicine, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio, USA
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Zhu X, Zhu J. CD4 T Helper Cell Subsets and Related Human Immunological Disorders. Int J Mol Sci 2020; 21:E8011. [PMID: 33126494 PMCID: PMC7663252 DOI: 10.3390/ijms21218011] [Citation(s) in RCA: 141] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 02/07/2023] Open
Abstract
The immune system plays a critical role in protecting hosts from the invasion of organisms. CD4 T cells, as a key component of the immune system, are central in orchestrating adaptive immune responses. After decades of investigation, five major CD4 T helper cell (Th) subsets have been identified: Th1, Th2, Th17, Treg (T regulatory), and Tfh (follicular T helper) cells. Th1 cells, defined by the expression of lineage cytokine interferon (IFN)-γ and the master transcription factor T-bet, participate in type 1 immune responses to intracellular pathogens such as mycobacterial species and viruses; Th2 cells, defined by the expression of lineage cytokines interleukin (IL)-4/IL-5/IL-13 and the master transcription factor GAΤA3, participate in type 2 immune responses to larger extracellular pathogens such as helminths; Th17 cells, defined by the expression of lineage cytokines IL-17/IL-22 and the master transcription factor RORγt, participate in type 3 immune responses to extracellular pathogens including some bacteria and fungi; Tfh cells, by producing IL-21 and expressing Bcl6, help B cells produce corresponding antibodies; whereas Foxp3-expressing Treg cells, unlike Th1/Th2/Th17/Tfh exerting their effector functions, regulate immune responses to maintain immune cell homeostasis and prevent immunopathology. Interestingly, innate lymphoid cells (ILCs) have been found to mimic the functions of three major effector CD4 T helper subsets (Th1, Th2, and Th17) and thus can also be divided into three major subsets: ILC1s, ILC2s, and ILC3s. In this review, we will discuss the differentiation and functions of each CD4 T helper cell subset in the context of ILCs and human diseases associated with the dysregulation of these lymphocyte subsets particularly caused by monogenic mutations.
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Affiliation(s)
- Xiaoliang Zhu
- Molecular and Cellular Immunoregulation Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jinfang Zhu
- Molecular and Cellular Immunoregulation Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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Li D, Cheng J, Zhu Z, Catalfamo M, Goerlitz D, Lawless OJ, Tallon L, Sadzewicz L, Calderone R, Bellanti JA. Treg-inducing capacity of genomic DNA of Bifidobacterium longum subsp. infantis. Allergy Asthma Proc 2020; 41:372-385. [PMID: 32867892 PMCID: PMC8242987 DOI: 10.2500/aap.2020.41.200064] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background: Allergic and autoimmune diseases comprise a group of inflammatory disorders caused by aberrant immune responses in which CD25+ forkhead box P3-positive regulatory T cells (Treg) cells that normally suppress inflammatory events are often poorly functioning. This has stimulated an intensive investigative effort to find ways of increasing Tregs as a method of therapy for these conditions. Commensal microbiota known to have health benefits in humans include the lactic acid-producing, probiotic bacteria B. longum subsp. infantis and Lactobacillus rhamnosus. Mechanistically, several mechanisms have been proposed to explain how probiotics may favorably affect host immunity, including the induction of Tregs. Analysis of emerging data from several laboratories, including our own, suggest that DNA methylation may be an important determinant of immune reactivity responsible for Treg induction. Although methylated CpG moieties in normal mammalian DNA are both noninflammatory and lack immunogenicity, unmethylated CpGs, found largely in microbial DNA, are immunostimulatory and display proinflammatory properties. Objective: We hypothesize that microbiota with more DNA methylation may potentiate Treg induction to a greater degree than microbiota with a lower content of methylation. The purpose of the present study was to test this hypothesis by studying the methylation status of whole genomic DNA (gDNA) and the Treg-inducing capacity of purified gDNA in each of the probiotic bacteria B. longum subsp. infantis and L. rhamnosus, and a pathogenic Escherichia coli strain B. Results: We showed that gDNA from B. longum subsp. infantis is a potent Treg inducer that displays a dose-dependent response pattern at a dose threshold of 20 µg of gDNA. No similar Treg-inducing responses were observed with the gDNA from L. rhamnosus or E. coli. We identified a unique CpG methylated motif in the gDNA sequencing of B. longum subsp. infantis which was not found in L. rhamnosus or E. coli strain B. Conclusion: Although the literature indicates that both B. longum subsp. infantis and L. rhamnosus strains contribute to health, our data suggest that they do so by different mechanisms. Further, because of its small molecular size, low cost, ease of synthesis, and unique Treg-inducing feature, this methylated CpG oligodeoxynucleotide (ODN) from B. longum would offer many attractive features for an ideal novel therapeutic vaccine candidate for the treatment of immunologic diseases, such as the allergic and autoimmune disorders, in which Treg populations are diminished.
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Affiliation(s)
- Dongmei Li
- From the Department of Microbiology-Immunology, Georgetown University Medical Center, Washington, D.C
| | - Jie Cheng
- From the Department of Microbiology-Immunology, Georgetown University Medical Center, Washington, D.C
| | - Ziang Zhu
- From the Department of Microbiology-Immunology, Georgetown University Medical Center, Washington, D.C
| | - Marta Catalfamo
- From the Department of Microbiology-Immunology, Georgetown University Medical Center, Washington, D.C
| | - David Goerlitz
- Genomics and Epigenomics Shared Resource, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C
| | - Oliver J. Lawless
- Department of Pediatrics, Georgetown University Medical Center, Washington, D.C.; and
| | - Luke Tallon
- Genomic Resource Center, University of Maryland School of Medicine, Baltimore, Maryland
| | - Lisa Sadzewicz
- Genomic Resource Center, University of Maryland School of Medicine, Baltimore, Maryland
| | - Richard Calderone
- From the Department of Microbiology-Immunology, Georgetown University Medical Center, Washington, D.C
| | - Joseph A. Bellanti
- From the Department of Microbiology-Immunology, Georgetown University Medical Center, Washington, D.C
- Department of Pediatrics, Georgetown University Medical Center, Washington, D.C.; and
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Liu Y, Qi G, Bellanti JA, Moser R, Ryffel B, Zheng SG. Regulatory T cells: A potential weapon to combat COVID-19? MedComm (Beijing) 2020; 1:157-164. [PMID: 32838397 PMCID: PMC7436572 DOI: 10.1002/mco2.12] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/13/2020] [Accepted: 05/14/2020] [Indexed: 12/13/2022] Open
Abstract
Since the end of December 2019, a novel coronavirus SARS-CoV-2 began to spread, an infection disease termed COVID-19. The virus has spread throughout the world in a short period of time, resulting in a pandemic. The number of reported cases in global reached 5 695 596 including 352 460 deaths, as of May 27, 2020. Due to the lack of effective treatment options for COVID-19, various strategies are being tested. Recently, pathologic studies conducted by two teams in China revealed immunopathologic abnormalities in lung tissue. These results have implications for immunotherapy that could offer a novel therapy strategy for combating lethal viral pneumonia. This review discusses the clinical and pathological features of COVID-19, the roles of immune cells in pathological processes, and the possible avenues for induction of immunosuppressive T regulatory cells attenuating lung inflammation due to viral infection. It is our hope that these proposals may both be helpful in understanding the novel features of SARS-CoV-2 pneumonia as well as providing new immunological strategies for treating the severe sequelae of disease manifestations seen in people infected with SARS-CoV-2.
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Affiliation(s)
- Yu Liu
- Department of Clinical ImmunologySun Yat‐sen University Third Affiliated HospitalGuangzhouP. R. China
- Guangxi Key Laboratory of Tumor Immunology and Microenvironmental RegulationGuilin Medical UniversityGuilinP. R. China
| | - Guangying Qi
- Guangxi Key Laboratory of Tumor Immunology and Microenvironmental RegulationGuilin Medical UniversityGuilinP. R. China
| | - Joseph A. Bellanti
- Department of Pediatrics and Microbiology‐ImmunologyGeorgetown University Medical CenterWashingtonDistrict of Columbia
| | - René Moser
- Institute for Biopharmaceutical ResearchMatzingenSwitzerland
| | - Bernhard Ryffel
- Experimental and Molecular Immunology and Neurogenetics (INEM)UMR 7355 INEMCNRS‐University of OrleansOrleansFrance
| | - Song Guo Zheng
- Department of Internal MedicineOhio State University College of Medicine and Wexner Medical Center, Medical CenterColumbusOhio
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Chen YH, Eskandarpour M, Gondrand A, Zhang X, Gu R, Galatowicz G, Lightman SL, Calder VL. Functionally distinct IFN-γ + IL-17A + Th cells in experimental autoimmune uveitis: T-cell heterogeneity, migration, and steroid response. Eur J Immunol 2020; 50:1941-1951. [PMID: 32652562 DOI: 10.1002/eji.202048616] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/11/2020] [Accepted: 07/10/2020] [Indexed: 01/03/2023]
Abstract
Immunopathogenic roles for both Th1 (CD4+ IFN-γ+ ) and Th17 (CD4+ IL-17A+ ) cells have been demonstrated in experimental autoimmune uveitis (EAU). However, the role for Th17/Th1 (CD4+ T cells co-expressing IFN-γ and IL-17A) cells in EAU is not yet understood. Using interphotoreceptor retinoid-binding protein peptide-induced EAU in mice, we found increased levels of Th17/Th1 cells in EAU retinae (mean 9.6 ± 4.2%) and draining LNs (mean 8.4 ± 3.9%; p = 0.01) relative to controls. Topical dexamethasone treatment effectively reduced EAU severity and decreased retinal Th1 cells (p = 0.01), but had no impact on retinal Th17/Th1 or Th17 cells compared to saline controls. Using in vitro migration assays with mouse CNS endothelium, we demonstrated that Th17/Th1 cells were significantly increased within the migrated population relative to controls (mean 15.6 ± 9.5% vs. 1.9 ± 1.5%; p = 0.01). Chemokine receptor profiles of Th17/Th1 cells (CXCR3 and CCR6) did not change throughout the transendothelial migration process and were unaffected by dexamethasone treatment. These findings support a role for Th17/Th1 cells in EAU and their resistance to steroid inhibition suggests the importance of targeting both Th17 and Th17/Th1 cells for improving therapy.
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Affiliation(s)
- Yi-Hsing Chen
- UCL Institute of Ophthalmology, University College London, London, UK.,Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | | | - Aurelia Gondrand
- UCL Institute of Ophthalmology, University College London, London, UK
| | - Xiaozhe Zhang
- UCL Institute of Ophthalmology, University College London, London, UK
| | - Renyang Gu
- UCL Institute of Ophthalmology, University College London, London, UK
| | | | - Sue L Lightman
- UCL Institute of Ophthalmology, University College London, London, UK.,Moorfields Eye Hospital, London, UK
| | - Virginia L Calder
- UCL Institute of Ophthalmology, University College London, London, UK
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de Castro GLC, Bichara CDA, Santiago AM, de Brito WB, Pereira LMS, Moura TCF, da Silva Graça Amoras E, de Araújo MSM, da Silva Conde SRS, Queiroz MAF, Ishak R, Vallinoto ACR. Polymorphisms in the TGFB1 and FOXP3 genes are associated with the presence of antinuclear antibodies in chronic hepatitis C. Heliyon 2020; 6:e04524. [PMID: 32743104 PMCID: PMC7387822 DOI: 10.1016/j.heliyon.2020.e04524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/11/2020] [Accepted: 07/17/2020] [Indexed: 11/18/2022] Open
Abstract
Chronic infection with Hepacivirus C (HCV) can lead to the occurrence of antinuclear antibodies (ANAs) and changes in cytokine profiles that can be similar to autoimmune diseases. The aim of the study was to identify polymorphisms in important mediators of the immune response in association with ANAs, which could contribute to the development of autoimmunity in hepatitis C. The study included 87 patients with chronic hepatitis C who were evaluated for the presence of ANA (indirect immunofluorescence) and for polymorphisms in the FOXP3, IFNG, IL6, IL8, IL10, MBL2, CRP, TGFΒ1 and TNFA genes (real-time PCR). Of the patients evaluated, 17 (19.54%) had ANA reactivity. The G allele of the FOXP3 rs2232365 polymorphism was more frequent in ANA-positive women (p = 0.0231; OR = 3,285). The C allele of the TGFΒ1 rs1800469 polymorphism was associated with ANA production (p = 0.0169; OR = 2.88). The results suggest that polymorphisms in genes related to immunological regulation may be associated with mechanisms that lead to the emergence of autoantibodies in the context of chronic Hepacivirus C infection.
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Affiliation(s)
| | - Carlos David A. Bichara
- Laboratório de Virologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
| | - Angélica Menezes Santiago
- Laboratório de Virologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
| | - William Botelho de Brito
- Laboratório de Virologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
| | | | | | | | - Mauro Sérgio Moura de Araújo
- Laboratório de Virologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
- Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, PA, Brazil
| | | | | | - Ricardo Ishak
- Laboratório de Virologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
| | - Antonio Carlos Rosário Vallinoto
- Laboratório de Virologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
- Corresponding author.
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48
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Liu Y, Qi G, Wang J, Huang F, Bellanti JA, Zheng SG. CD4 +CD25 highCD226 low/- cells: An innovative approach to identify human regulatory T cells. J Allergy Clin Immunol 2020; 147:767-769.e6. [PMID: 32668282 DOI: 10.1016/j.jaci.2020.06.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 06/13/2020] [Accepted: 06/22/2020] [Indexed: 01/21/2023]
Affiliation(s)
- Yu Liu
- Institute of Clinical Immunology, Sun Yat-sen University Third Affiliated Hospital, Guangzhou, China; Guangxi Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin, China.
| | - Guangying Qi
- Guangxi Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin, China
| | - Julie Wang
- Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio
| | - Feng Huang
- Institute of Clinical Immunology, Sun Yat-sen University Third Affiliated Hospital, Guangzhou, China
| | - Joseph A Bellanti
- Department of Pediatrics and Microbiology-Immunology, Georgetown University Medical Center, Washington, DC
| | - Song Guo Zheng
- Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio.
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49
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Type 2 inflammation suppression by T-regulatory cells attenuates the eosinophil recruitment in mucosa of chronic sinusitis. Clin Sci (Lond) 2020; 134:123-138. [PMID: 31922185 DOI: 10.1042/cs20190388] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 12/18/2019] [Accepted: 01/10/2020] [Indexed: 11/17/2022]
Abstract
Type 2 inflammation and eosinophilic infiltration are prominent pathologic features of chronic rhinosinusitis with nasal polyps (CRSwNP). The purpose of the present study was to determine the roles of Tregs in controlling type 2 inflammation and inhibiting eosinophilic infiltration in CRSwNP. A total of 134 nasal polyps, 67 ostiomeatal complex from chronic rhinosinusitis (CRS) and 62 normal nasal tissues from controls were collected to study the enumeration and function of Tregs cells and the expressions of cytokine profiles via immunofluorescence staining, flow cytometry, qRT-PCR, ELISA, and/or H&E staining. The effects of Tregs on type2 and type3 inflammations were determined in an eosinophilic chronic sinusitis (ECRS) mice model. It was confirmed that the CRSwNP displayed the features of Th2 and Th17 cells-mediated inflammation, accompanying by an increased level of eosinophilic infiltration and the eosinophil cationic protein (ECP), with a decreased frequency of Treg cells. Furthermore, the percentages of CD4+CD25+CD127lowTreg and CD4+CD25+Foxp3+Treg were only decreased in the polyps of CRSwNP but not in the paired peripheral blood. The CRSwNP possessed the decreased Nrp1+Tregs, Helios+Treg, and low TGF-β and interleukin (IL)-10 expressions in Tregs. The ECRS mice showed similar inflammatory characteristics to CRSwNP patients. The adoptive transfer of CD4+CD25+Foxp3+ Treg cells significantly decreased the inflammatory cytokines, eosinophilic chemotactic factors in the mucosa of the ECRS mice without alteration of the immune balance in the peripheral blood and spleen. In conclusion, CRSwNP showed high type 2 and type3 inflammation and defective Tregs. The induced regulatory T cell (iTreg) may correct the imbalance between immune tolerance and effect via limiting the eosinophil recruitment of mucosa in CRSwNP.
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50
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Wu Q, Cao F, Tao J, Li X, Zheng SG, Pan HF. Pentraxin 3: A promising therapeutic target for autoimmune diseases. Autoimmun Rev 2020; 19:102584. [PMID: 32534154 DOI: 10.1016/j.autrev.2020.102584] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 02/20/2020] [Indexed: 12/15/2022]
Abstract
Pentraxin 3 (PTX3) is a prototypic humoral soluble pattern recognition molecule that exerts a pivotal role in innate immune response and inflammation, as well as in tissue damage and remodeling. Recently, emerging evidence has revealed that PTX3 is involved in the occurrence and development of various autoimmune diseases, such as rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), ankylosing spondylitis (AS), systemic sclerosis (SSc), inflammatory bowel disease (IBD), multiple sclerosis (MS) and psoriasis, etc. In this review, we have succinctly summarized the complex immunological functions of PTX3 and mostly focused on recent findings of the pleiotropic activities played by PTX3 in the pathogenesis of autoimmune diseases, aiming at hopefully offering possible future therapeutic alternatives.
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Affiliation(s)
- Qian Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Anhui Province Laboratory of Inflammation and Immune Mediated Diseases, 81 Meishan Road, Hefei, Anhui, China
| | - Fan Cao
- Department of Clinical Medicine, The second School of Clinical Medicine, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China
| | - Jinhui Tao
- Department of Rheumatology and Immunology, The First Affiliated Hospital, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaomei Li
- Department of Rheumatology and Immunology, The First Affiliated Hospital, University of Science and Technology of China, Hefei, Anhui, China
| | - Song Guo Zheng
- Department of Internal Medicine, Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH 43210, USA.
| | - Hai-Feng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Anhui Province Laboratory of Inflammation and Immune Mediated Diseases, 81 Meishan Road, Hefei, Anhui, China.
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