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Jahanbani F, Sing JC, Maynard RD, Jahanbani S, Dafoe J, Dafoe W, Jones N, Wallace KJ, Rastan A, Maecker HT, Röst HL, Snyder MP, Davis RW. Longitudinal cytokine and multi-modal health data of an extremely severe ME/CFS patient with HSD reveals insights into immunopathology, and disease severity. Front Immunol 2024; 15:1369295. [PMID: 38650940 PMCID: PMC11033372 DOI: 10.3389/fimmu.2024.1369295] [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: 01/12/2024] [Accepted: 03/18/2024] [Indexed: 04/25/2024] Open
Abstract
Introduction Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) presents substantial challenges in patient care due to its intricate multisystem nature, comorbidities, and global prevalence. The heterogeneity among patient populations, coupled with the absence of FDA-approved diagnostics and therapeutics, further complicates research into disease etiology and patient managment. Integrating longitudinal multi-omics data with clinical, health,textual, pharmaceutical, and nutraceutical data offers a promising avenue to address these complexities, aiding in the identification of underlying causes and providing insights into effective therapeutics and diagnostic strategies. Methods This study focused on an exceptionally severe ME/CFS patient with hypermobility spectrum disorder (HSD) during a period of marginal symptom improvements. Longitudinal cytokine profiling was conducted alongside the collection of extensive multi-modal health data to explore the dynamic nature of symptoms, severity, triggers, and modifying factors. Additionally, an updated severity assessment platform and two applications, ME-CFSTrackerApp and LexiTime, were introduced to facilitate real-time symptom tracking and enhance patient-physician/researcher communication, and evaluate response to medical intervention. Results Longitudinal cytokine profiling revealed the significance of Th2-type cytokines and highlighted synergistic activities between mast cells and eosinophils, skewing Th1 toward Th2 immune responses in ME/CFS pathogenesis, particularly in cognitive impairment and sensorial intolerance. This suggests a potentially shared underlying mechanism with major ME/CFS comorbidities such as HSD, Mast cell activation syndrome, postural orthostatic tachycardia syndrome (POTS), and small fiber neuropathy. Additionally, the data identified potential roles of BCL6 and TP53 pathways in ME/CFS etiology and emphasized the importance of investigating adverse reactions to medication and supplements and drug interactions in ME/CFS severity and progression. Discussion Our study advocates for the integration of longitudinal multi-omics with multi-modal health data and artificial intelligence (AI) techniques to better understand ME/CFS and its major comorbidities. These findings highlight the significance of dysregulated Th2-type cytokines in patient stratification and precision medicine strategies. Additionally, our results suggest exploring the use of low-dose drugs with partial agonist activity as a potential avenue for ME/CFS treatment. This comprehensive approach emphasizes the importance of adopting a patient-centered care approach to improve ME/CFS healthcare management, disease severity assessment, and personalized medicine. Overall, these findings contribute to our understanding of ME/CFS and offer avenues for future research and clinical practice.
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Affiliation(s)
- Fereshteh Jahanbani
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Justin Cyril Sing
- Department of Molecular Genetics, Donnelly Center, University of Toronto, Toronto, ON, Canada
| | - Rajan Douglas Maynard
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Shaghayegh Jahanbani
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Veterans Affairs (VA) Palo Alto Health Care System, Palo Alto, CA, United States
| | - Janet Dafoe
- ME/CFS Collaborative Research Center at Stanford, Stanford Genome Technology Center, Stanford University School of Medicine, Palo Alto, CA, United States
| | - Whitney Dafoe
- ME/CFS Collaborative Research Center at Stanford, Stanford Genome Technology Center, Stanford University School of Medicine, Palo Alto, CA, United States
| | - Nathan Jones
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Kelvin J. Wallace
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Azuravesta Rastan
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Holden T. Maecker
- Sean N. Parker Center for Allergy and Asthma Research at Stanford University, Pulmonary and Critical Care Medicine, Institute of Immunity, Transplantation, and Infectious Diseases, Stanford University, Palo Alto, CA, United States
| | - Hannes L. Röst
- Department of Molecular Genetics, Donnelly Center, University of Toronto, Toronto, ON, Canada
| | - Michael P. Snyder
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Ronald W. Davis
- ME/CFS Collaborative Research Center at Stanford, Stanford Genome Technology Center, Stanford University School of Medicine, Palo Alto, CA, United States
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Soria-Castro R, Alfaro-Doblado ÁR, Rodríguez-López G, Campillo-Navarro M, Meneses-Preza YG, Galán-Salinas A, Alvarez-Jimenez V, Yam-Puc JC, Munguía-Fuentes R, Domínguez-Flores A, Estrada-Parra S, Pérez-Tapia SM, Chávez-Blanco AD, Chacón-Salinas R. TLR2 Regulates Mast Cell IL-6 and IL-13 Production During Listeria monocytogenes Infection. Front Immunol 2021; 12:650779. [PMID: 34194428 PMCID: PMC8238461 DOI: 10.3389/fimmu.2021.650779] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 05/24/2021] [Indexed: 12/21/2022] Open
Abstract
Listeria monocytogenes (L.m) is efficiently controlled by several cells of the innate immunity, including the Mast Cell (MC). MC is activated by L.m inducing its degranulation, cytokine production and microbicidal mechanisms. TLR2 is required for the optimal control of L.m infection by different cells of the immune system. However, little is known about the MC receptors involved in recognizing this bacterium and whether these interactions mediate MC activation. In this study, we analyzed whether TLR2 is involved in mediating different MC activation responses during L.m infection. We found that despite MC were infected with L.m, they were able to clear the bacterial load. In addition, MC degranulated and produced ROS, TNF-α, IL-1β, IL-6, IL-13 and MCP-1 in response to bacterial infection. Interestingly, L.m induced the activation of signaling proteins: ERK, p38 and NF-κB. When TLR2 was blocked, L.m endocytosis, bactericidal activity, ROS production and mast cell degranulation were not affected. Interestingly, only IL-6 and IL-13 production were affected when TLR2 was inhibited in response to L.m infection. Furthermore, p38 activation depended on TLR2, but not ERK or NF-κB activation. These results indicate that TLR2 mediates only some MC activation pathways during L.m infection, mainly those related to IL-6 and IL-13 production.
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Affiliation(s)
- Rodolfo Soria-Castro
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
| | - Ángel R. Alfaro-Doblado
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
| | - Gloria Rodríguez-López
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
| | - Marcia Campillo-Navarro
- Research Coordination, Centro Médico Nacional 20 de Noviembre, Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Mexico City, Mexico
| | - Yatsiri G. Meneses-Preza
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
| | - Adrian Galán-Salinas
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
| | - Violeta Alvarez-Jimenez
- Unidad de Citometría de Flujo, Lab de Biología Molecular y Bioseguridad Nivel 3, Centro Médico Naval, Secretaría de Marina (SEMAR), Mexico City, Mexico
| | - Juan C. Yam-Puc
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Rosario Munguía-Fuentes
- Departamento de Ciencias Básicas, Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas, Instituto Politécnico Nacional (UPIITA-IPN), Mexico City, Mexico
| | - Adriana Domínguez-Flores
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
| | - Sergio Estrada-Parra
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
| | - Sonia M. Pérez-Tapia
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
| | - Alma D. Chávez-Blanco
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología (INCan), México City, Mexico
| | - Rommel Chacón-Salinas
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (ENCB-IPN), Mexico City, Mexico
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Mast Cell Functions Linking Innate Sensing to Adaptive Immunity. Cells 2020; 9:cells9122538. [PMID: 33255519 PMCID: PMC7761480 DOI: 10.3390/cells9122538] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 12/11/2022] Open
Abstract
Although mast cells (MCs) are known as key drivers of type I allergic reactions, there is increasing evidence for their critical role in host defense. MCs not only play an important role in initiating innate immune responses, but also influence the onset, kinetics, and amplitude of the adaptive arm of immunity or fine-tune the mode of the adaptive reaction. Intriguingly, MCs have been shown to affect T-cell activation by direct interaction or indirectly, by modifying the properties of antigen-presenting cells, and can even modulate lymph node-borne adaptive responses remotely from the periphery. In this review, we provide a summary of recent findings that explain how MCs act as a link between the innate and adaptive immunity, all the way from sensing inflammatory insult to orchestrating the final outcome of the immune response.
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Abstract
Myocarditis (MCD) is a type of inflammatory disease in which inflammatory cells infiltrate the myocardium, leading to cardiac dysfunction, myocardial necrosis, and fibrosis. Although it has been reported that MCD is mediated by T cells, the immune system is complex and includes many types of immune cells that interact with one another. Through investigations of the inflammatory responses in MCD including myocardial necrosis, fibrosis, and arrhythmia, we have gained further insight into the pathogenesis of MCD. This article aims to discuss the diversity and the roles of immune cells involved in the pathogenesis of MCD. Moreover, immunotherapy for the treatment of MCD remains controversial, and further investigation is required to identify accurate immunotherapies for special cell types.
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Yu D, Liu JQ, Mo LH, Luo XQ, Liu ZQ, Wu GH, Yang LT, Liu DB, Wang S, Liu ZG, Yang PC. Specific antigen-guiding exosomes inhibit food allergies by inducing regulatory T cells. Immunol Cell Biol 2020; 98:639-649. [PMID: 32378751 DOI: 10.1111/imcb.12347] [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: 02/04/2020] [Revised: 05/04/2020] [Accepted: 05/04/2020] [Indexed: 12/26/2022]
Abstract
The therapies for food allergy (FA) need to be improved. The generation of inducible regulatory T cells (Tregs) can support immune tolerance in the body. This study aims to suppress experimental FA by inducing Tregs through the employment of modified exosomes (mExosomes). In this study, mExosomes were prepared by incubating dendritic cells with interleukin (IL)-2 and ovalbumin (OVA, used as a specific antigen) in the culture. Exosomes were purified from culture supernatant and used as the mExosomes. A murine FA model was developed to test the effects of mExosomes on the generation of Tregs in the mouse intestinal tissues and inhibiting FA. The results showed that mExosomes, which carried IL-2 and a complex of OVA peptide-major histocompatibility complex class II on the surface of exosomes, bound to OVA-specific CD4+ T cells and induced CD4+ T cells to differentiate into Tregs. In the FA mouse intestinal tissues, we found low IL-2 levels that were positively correlated with the number of Tregs. Depletion of IL-2 in mice prevented the generation of Tregs. The levels of peroxisome proliferator-activated receptor-γ were increased in the FA intestinal tissues with inhibited IL-2 production. Administration of mExosomes induced Tregs in the intestinal tissues and efficiently suppressed FA in mice. We conclude that the mExosomes can suppress FA in mice through inducing Tregs. The data suggest that the mExosomes have translational potential in the treatment of FA and other allergic disorders.
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Affiliation(s)
- Dian Yu
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Jiang-Qi Liu
- Department of Allergy, Longgang ENT Hospital & Shenzhen Key Laboratory of ENT, Institute of ENT, Shenzhen, China
| | - Li-Hua Mo
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Xiang-Qian Luo
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Zhi-Qiang Liu
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Department of Allergy, Longgang ENT Hospital & Shenzhen Key Laboratory of ENT, Institute of ENT, Shenzhen, China
| | - Gao-Hui Wu
- Department of Respirology & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Li-Teng Yang
- Department of Respirology & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Da-Bo Liu
- Department of Pediatric Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Shuai Wang
- Department of Allergy, Longgang ENT Hospital & Shenzhen Key Laboratory of ENT, Institute of ENT, Shenzhen, China
| | - Zhi-Gang Liu
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Ping-Chang Yang
- Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen, China
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Shafabakhsh R, Pourhanifeh MH, Mirzaei HR, Sahebkar A, Asemi Z, Mirzaei H. Targeting regulatory T cells by curcumin: A potential for cancer immunotherapy. Pharmacol Res 2019; 147:104353. [PMID: 31306775 DOI: 10.1016/j.phrs.2019.104353] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 02/07/2023]
Abstract
Immune system has critical roles in fighting against several diseases like cancer. Cancer cells evolve several ways to escape from the immune system to remain alive and trigger new phases of cancer progression. Regulatory T cells are one of the key components in tumor immune tolerance and contribute to the evasion of cancer cells from the immune system. Targeting regulatory T cells could provide new horizons in designing and development of effective therapeutic platforms for the treatment of various malignancies. Curcumin is the bioactive pigment of turmeric and a well-known phytochemical with a wide range of pharmacological activities. A growing body of evidence has demonstrated that curcumin affects manifold molecular pathways that are implicated in tumorigenesis and cancer metastasis. In this regard, some studies have indicated that this phytochemical could target regulatory T cells and convert them into T helper 1 cells, which possess anti-tumor effects. On the contrary, curcumin is able to increase the number of regulatory T cells in other conditions such as inflammatory bowel disease. Herein, we describe the anti-cancer roles of curcumin via targeting regulatory T cells. Moreover, we summarize the effects of curcumin on regulatory T cell population in other diseases.
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Affiliation(s)
- Rana Shafabakhsh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Hossein Pourhanifeh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Hamid Reza Mirzaei
- Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Amirhossein Sahebkar
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran.
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Feng BS, Wu YJ, Hong JY, Geng XR, Liu JQ, Liu ZG, Zheng PY, Yang PC. Bcl2L12 plays a critical role in the development of intestinal allergy. Immunol Lett 2018; 203:87-94. [DOI: 10.1016/j.imlet.2018.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 08/01/2018] [Accepted: 09/03/2018] [Indexed: 12/15/2022]
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8
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Elieh Ali Komi D, Grauwet K. Role of Mast Cells in Regulation of T Cell Responses in Experimental and Clinical Settings. Clin Rev Allergy Immunol 2018; 54:432-445. [PMID: 28929455 DOI: 10.1007/s12016-017-8646-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mast cells secrete a wide spectrum of stored or newly synthesized pro-inflammatory, anti-inflammatory, and/or immunosuppressive mediators and express several costimulatory and inhibitory surface molecules. Mast cells finely tune activities of T cells, B cells, and regulatory cells and effectively contribute to the development of different T cell-associated responses by influencing their recruitment, activation, proliferation, and differentiation. The interaction between mast cells and T cells, with regard to cellular functionality and immune responses, can be assessed in both activating and inhibitory regulations. While Th2 cytokines, including IL-5 and IL-9, stimulate stem cell factor (SCF)-dependent proliferation of mast cells, Th1 cytokine IFN-γ suppresses SCF-mediated differentiation of mast cell progenitors. Mast cell mediators such as CCL5 have a role in the recruitment of CD8+ T cells to viral infection sites where their ability in clearance of viral reservoirs is needed. The capacity of mast cells in presenting antigens by classes I and II MHC molecules to CD4+ and CD8+ T cells respectively is considered one of the main antigen-dependent interactions of mast cells with T cells. Interestingly, Tregs recruit mast cells to different sites through secretion of IL-9, while the OX40L (expressed on mast cell)-OX40(expressed on T cell) interaction inhibits the extent of the mast cell degranulation. Recently, the capability of exosomes to carry regulatory receptors of the mast cell surface and their role in T cell activation has been investigated. Functional interplay between mast cells and T cell subsets has been suggested primarily by investigating their co-localization in inflamed tissues and involvement of mast cells in autoimmune diseases. In this review, the interactions of mast cells with T cells are reviewed in cell-to-cell, cytokine, and exosome categories.
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Affiliation(s)
- Daniel Elieh Ali Komi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Korneel Grauwet
- Harvey Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, 60 Fenwood Road, BTM building Rm 08012, Boston, MA, 02115, USA.
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9
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Feng BS, Wu YJ, Zeng XH, Yu D, Liu ZQ, Zhou CJ, Liu ZG, Zheng PY, Yang PC. Bcl2L12 mediates effects of protease-activated receptor-2 on the pathogenesis of Th2-dominated responses of patients with ulcerative colitis. Arch Biochem Biophys 2018; 657:8-14. [PMID: 30217509 DOI: 10.1016/j.abb.2018.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 09/03/2018] [Accepted: 09/08/2018] [Indexed: 02/06/2023]
Abstract
The immune dysregulation plays an important role in the pathogenesis of ulcerative colitis (UC). Bcl2 like protein-12 (Bcl2L12) and mast cells are involved in immune dysregulation of UC. This study aims to elucidate the role of Bcl2L12 in the contribution to the pathogenesis of T helper (Th)2-biased inflammation in UC patients. The results showed that Bcl2L12 was expressed by peripheral CD4+ T cells that was associated with Th2 polarization in UC patients. Bcl2L12 mediated the protease-activated receptor-2 (PAR2)-induced IL-4 expression in CD4+ cells. Activation of PAR2 increased expression of Bcl2L12 in CD4+ T cells. Bcl2L12 mRNA decayed spontaneously in CD4+ T cells after separated from UC patients which was prevented by activating PAR2. Bcl2L12 mediated the binding between GATA3 and the Il4 promoter in CD4+ T cells. Mice with Bcl2L12 deficiency failed to induce Th2-biased inflammation in the colon mucosa. We conclude that CD4+ T cells from UC patients expressed high levels of Bcl2L12; the latter plays an important role in the development of Th2-biased inflammation in the intestine. Bcl2L12 may be a novel therapeutic target in the treatment of Th2-biased inflammation.
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Affiliation(s)
- Bai-Sui Feng
- Department of Gastroenterology, The Second Hospital, Zhengzhou University, Zhengzhou, China
| | - Yong-Jin Wu
- The Affiliated ENT Hospital and Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Xian-Hai Zeng
- The Affiliated ENT Hospital and Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Dian Yu
- The Affiliated ENT Hospital and Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Zhi-Qiang Liu
- The Affiliated ENT Hospital and Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Cai-Jie Zhou
- Longgang Chinese Traditional Medical Hospital and Beijing University of Chinese Medicine Shenzhen Hospital, Shenzhen, China
| | - Zhi-Gang Liu
- The Affiliated ENT Hospital and Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Peng-Yuan Zheng
- Department of Gastroenterology, The Fifth Hospital, Zhengzhou University, Zhengzhou, China.
| | - Ping-Chang Yang
- The Affiliated ENT Hospital and Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.
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10
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The role of extracellular vesicles when innate meets adaptive. Semin Immunopathol 2018; 40:439-452. [PMID: 29616308 PMCID: PMC6208666 DOI: 10.1007/s00281-018-0681-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 03/19/2018] [Indexed: 12/21/2022]
Abstract
Innate immune cells are recognized for their rapid and critical contribution to the body's first line of defense against invading pathogens and harmful agents. These actions can be further amplified by specific adaptive immune responses adapted to the activating stimulus. Recently, the awareness has grown that virtually all innate immune cells, i.e., mast cells, neutrophils, macrophages, eosinophils, basophils, and NK cells, are able to communicate with dendritic cells (DCs) and/or T and B cells, and thereby significantly contribute to the orchestration of adaptive immune responses. The means of communication that are thus far primarily associated with this function are cell-cell contacts and the release of a broad range of soluble mediators. Moreover, the possible contribution of innate immune cell-derived extracellular vesicles (EVs) to the modulation of adaptive immunity will be outlined in this review. EVs are submicron particles composed of a lipid bilayer, proteins, and nucleic acids released by cells in a regulated fashion. EVs are involved in intercellular communication between multiple cell types, including those of the immune system. A good understanding of the mechanisms by which innate immune cell-derived EVs influence adaptive immune responses, or vice versa, may reveal novel insights in the regulation of the immune system and can open up new possibilities for EVs (or their components) in controlling immune responses, either as a therapy, target, or as an adjuvant in future immune modulating treatments.
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Zou JY, Su CH, Luo HH, Lei YY, Zeng B, Zhu HS, Chen ZG. Curcumin converts Foxp3+ regulatory T cells to T helper 1 cells in patients with lung cancer. J Cell Biochem 2017; 119:1420-1428. [DOI: 10.1002/jcb.26302] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/20/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Jian Y. Zou
- Department of Thoracic SurgeryThe First Affiliated Hospital of Sun Yat‐Sen UniversityGuangzhouChina
| | - Chun H. Su
- Department of Thoracic SurgeryThe First Affiliated Hospital of Sun Yat‐Sen UniversityGuangzhouChina
| | - Hong H. Luo
- Department of Thoracic SurgeryThe First Affiliated Hospital of Sun Yat‐Sen UniversityGuangzhouChina
| | - Yi Y. Lei
- Department of Thoracic SurgeryThe First Affiliated Hospital of Sun Yat‐Sen UniversityGuangzhouChina
| | - Bo Zeng
- Department of Thoracic SurgeryThe First Affiliated Hospital of Sun Yat‐Sen UniversityGuangzhouChina
| | - Hao S. Zhu
- Department of Thoracic SurgeryThe First Affiliated Hospital of Sun Yat‐Sen UniversityGuangzhouChina
| | - Zhen G. Chen
- Department of Cardiothoracic SurgeryHuangpu Branch of The First Affiliated Hospital of Sun Yat‐Sen UniversityGuangzhouChina
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12
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Lu D, Lan B, Din Z, Chen H, Chen G. A vitamin D receptor agonist converts CD4+ T cells to Foxp3+ regulatory T cells in patients with ulcerative colitis. Oncotarget 2017; 8:53552-53562. [PMID: 28881831 PMCID: PMC5581130 DOI: 10.18632/oncotarget.18614] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 05/22/2017] [Indexed: 12/31/2022] Open
Abstract
One of the pathological features of ulcerative colitis (UC) is the dysfunction of immune regulatory T cells (Treg cells); the pathogenesis is unclear and needs to be further investigated. Vitamin D has immune regulatory functions. This study tests a hypothesis that vitamin D receptor (VDR) regulates Treg cell differentiation. Peripheral blood samples were collected from UC patients and healthy subjects. The correlation between VDR expression and T helper (Th)2 cell differentiation in peripheral CD4+ T cells was analyzed. We observed that the expression of VDR was lower, the expression of interleukin (IL)-4 was higher, in peripheral CD4+ T cells of UC patients than that in healthy controls. Naive CD4+ T cells from VDR deficient mice were prone to differentiating into Th2 cells, which could be adjusted by the presence of VDR agonists. The Th2 polarization status in the peripheral CD4+ T cells of UC patients could be converted to regulatory T cells in the culture in the presence of VDR agonists. In conclusion, the peripheral Th2 cells in UC patients can be converted to regulatory T cells by VDR agonists in the culture. The results suggest that administration of VDR agonists at proper dosages may improve the immunity of UC patients.
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Affiliation(s)
- Dong Lu
- Department of Gastroenterology, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Bin Lan
- Department of Gastroenterological Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Zonren Din
- Department of Gastroenterological Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Hang Chen
- Department of Gastroenterological Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Guoqiang Chen
- Department of Gastroenterological Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
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Zhang Y, Li X, Fang S, Zhu Z, Yao M, Ying L, Zhu L, Ma Z, Wang W. Peroxisome proliferator-activated receptor γ agonist suppresses mast cell maturation and induces apoptosis. Mol Med Rep 2017; 16:1793-1800. [PMID: 28656266 PMCID: PMC5562075 DOI: 10.3892/mmr.2017.6802] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 06/08/2017] [Indexed: 01/15/2023] Open
Abstract
Peroxisome proliferator-activated receptor gamma (PPAR γ), is important in the immunoregulation of the allergic response. Mast cells are the most important inflammatory cells in immediate hypersensitivity and allergic diseases. However, there is limited information regarding the effects of PPAR γ on mast cell maturation. In the present study, mouse bone marrow-derived mast cells (BMMCs) were cultured in interleukin (IL)-3 and stem cell factor (SCF), in the presence or absence of the PPAR γ agonist, pioglitazone (PIO). The expression levels of the tyrosine kinase receptor CD117 and the high affinity IgE receptor FcεRI α, were assessed by flow cytometry, cell viability was assessed by Alamar-Blue assay and histamine release was determined by measuring the activity of β-hexosaminidase. IL-3 and SCF are required for the development of mast cells in vitro. PIO dose-dependently inhibited the expression of CD117 and FcεRI α, and the maturation of BMMCs. Treatment with PIO additionally inhibited the formation of granules and reduced the expression of β-hexosaminidase. In addition, reverse transcription-polymerase chain reaction analysis revealed that BMMCs treated with PIO expressed a lower level of mast cell protease (MCP)-6 mRNA and PIO treatment enhanced the level of PPAR γ mRNA. Furthermore, PIO induced mast cell progenitor apoptosis. PPAR γ agonists may maintain mast cell homeostasis by inhibiting maturation of their precursors. The inhibitory effects of PPAR γ agonists include suppression of the activation of mast cells and a decrease in mast cell function in the inflammatory response. Therefore, PPAR γ agonists may serve as effective anti-inflammatory reagents in the treatment of allergic reactions.
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Affiliation(s)
- Yu Zhang
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Xinqian Li
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Shengjian Fang
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Zhenghua Zhu
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Min Yao
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Liyun Ying
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Liwei Zhu
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Zhaoxin Ma
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Weihua Wang
- Department of Otolaryngology‑Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
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Peters EMJ, Müller Y, Snaga W, Fliege H, Reißhauer A, Schmidt-Rose T, Max H, Schweiger D, Rose M, Kruse J. Hair and stress: A pilot study of hair and cytokine balance alteration in healthy young women under major exam stress. PLoS One 2017; 12:e0175904. [PMID: 28423056 PMCID: PMC5397031 DOI: 10.1371/journal.pone.0175904] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 04/02/2017] [Indexed: 12/25/2022] Open
Abstract
Mouse models show that experimental stress mimicking prolonged life-stress exposure enhances neurogenic inflammation, induces adaptive immunity cytokine-imbalance characterized by a shift to Type 1 T-helper cell cytokines and increases apoptosis of epithelial cells. This affects hair growth in otherwise healthy animals. In this study, we investigate whether a prolonged naturalistic life-stress exposure affects cytokine balance and hair parameters in healthy humans. 33 (18 exam, 15 comparison) female medical students with comparable sociobiological status were analyzed during a stressful final examination period, at three points in time (T) 12 weeks apart. T1 was before start of the learning period, T2 between the three-day written exam and an oral examination, and T3 after a 12 week rest and recovery from the stress of the examination period. Assessments included: self-reported distress and coping strategies (Perceived Stress Questionnaire [PSQ], Trier Inventory for the Assessment of Chronic Stress [TICS]), COPE), cytokines in supernatants of stimulated peripheral blood mononucleocytes (PBMCs), and trichogram (hair cycle and pigmentation analysis). Comparison between students participating in the final medical exam at T2 and non-exam students, revealed significantly higher stress perception in exam students. Time-wise comparison revealed that stress level, TH1/TH2 cytokine balance and hair parameters changed significantly from T1 to T2 in the exam group, but not the control. However, no group differences were found for cytokine balance or hair parameters at T2. The study concludes that in humans, naturalistic stress, as perceived during participation in a major medical exam, has the potential to shift the immune response to TH1 and transiently hamper hair growth, but these changes stay within a physiological range. Findings are instructive for patients suffering from hair loss in times of high stress. Replication in larger and more diverse sample populations is required, to assess suitability of trichogram analysis as biological outcome for stress studies.
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Affiliation(s)
- Eva M. J. Peters
- Universitätsmedizin Charité, Center 12 for Internal Medicine and Dermatology, Division for General Internal Medicine, Psychosomatics and Psychotherapy: Psycho-Neuro-Immunology Skin Research Group, Berlin, Germany
- Justus-Liebig-University, Department of Psychosomatics and Psychotherapy, Psychoneuroimmunology Laboratory, Gießen, Germany
- * E-mail:
| | - Yvonne Müller
- Justus-Liebig-University, Department of Psychosomatics and Psychotherapy, Psychoneuroimmunology Laboratory, Gießen, Germany
| | - Wenke Snaga
- Universitätsmedizin Charité, Center 12 for Internal Medicine and Dermatology, Division for General Internal Medicine, Psychosomatics and Psychotherapy: Psycho-Neuro-Immunology Skin Research Group, Berlin, Germany
| | - Herbert Fliege
- Foreign Office, Health Service, Psychosocial Counseling, Auswärtiges Amt, Berlin, Germany
| | - Anett Reißhauer
- Universitätsmedizin Charité, Center 12 for Internal Medicine and Dermatology, Division for Physical Medicine and Rehabilitation, Berlin, Germany
| | | | | | | | - Matthias Rose
- Universitätsmedizin Charité, Center 12 for Internal Medicine and Dermatology, Division for General Internal Medicine, Psychosomatics and Psychotherapy: Psycho-Neuro-Immunology Skin Research Group, Berlin, Germany
| | - Johannes Kruse
- Justus-Liebig-University, Department of Psychosomatics and Psychotherapy, Psychoneuroimmunology Laboratory, Gießen, Germany
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15
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Li LJ, Ma N, Zeng L, Mo LH, Li XX, Xu LZ, Yang B, Liu ZG, Feng BS, Zheng PY, Zhang HP, Yang PC. Flagellin modulates IgE expression in B cells to initiate food allergy in mice. Am J Transl Res 2016; 8:2748-2757. [PMID: 27398157 PMCID: PMC4931168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 06/08/2016] [Indexed: 06/06/2023]
Abstract
The initiation mechanism of IgE expression has not been fully understood. Flagellin (FGN) is an important microbial factor in the regulation of immune responses in the intestine. This study tests a hypothesis that FGN plays a crucial role in the isotype switching of IgE in B cells and the initiation of food allergy. In this study, the expression of IgE in B cells was analyzed by real time RT-PCR, Western blotting and chromatin immunoprecipitation. A mouse model was developed to assess the role of Toll like receptor-5 in the development of IgE-mediated allergic reaction in the intestinal mucosa. The results showed that exposure to FGN suppressed the expression of Bcl6 in B cells via increasing the levels of histone deacetylase (HDAC) 7; the latter up regulated the levels of methylated H3K9 and H3K27, down regulated RNA polymerase II and STAT3 (signal transducer and activator of transcription 3) at the Bcl6 promoter locus. Exposure to FGN and IL-4 markedly increased the expression of IgE in B cells via activating p300, H3K4, Pol II and STAT6 at the IgE promoter locus. As compared with the sensitized wild mice, the sensitized TLR5-deficient mice showed no detectable OVA-specific IgE in the serum; mast cells in the intestinal mucosa were not activated, no apparent allergic symptoms were evoked after the specific antigen challenge. In conclusion, FGN facilitates the initiation of food allergy in mice by triggering IgE transcription in B cells in a Th2 polarization environment via activating HDAC7 and suppressing Bcl6 expression.
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Affiliation(s)
- Lin-Jing Li
- Department of Gastroenterology, The First Hospital, Zhengzhou UniversityZhengzhou 450052, China
- Brain Body Institute and Department of Pathology & Molecular Medicine, McMaster UniversityHamilton, ON, L8N 3Z5, Canada
| | - Na Ma
- Department of Gastroenterology, The First Hospital, Zhengzhou UniversityZhengzhou 450052, China
- The Research Center of Allergy & Immunology, Shenzhen University School of MedicineShenzhen 518060, China
| | - Lu Zeng
- The Research Center of Allergy & Immunology, Shenzhen University School of MedicineShenzhen 518060, China
| | - Li-Hua Mo
- The Research Center of Allergy & Immunology, Shenzhen University School of MedicineShenzhen 518060, China
| | - Xiao-Xi Li
- The Research Center of Allergy & Immunology, Shenzhen University School of MedicineShenzhen 518060, China
| | - Ling-Zhi Xu
- The Research Center of Allergy & Immunology, Shenzhen University School of MedicineShenzhen 518060, China
| | - Bo Yang
- The Research Center of Allergy & Immunology, Shenzhen University School of MedicineShenzhen 518060, China
| | - Zhi-Gang Liu
- The Research Center of Allergy & Immunology, Shenzhen University School of MedicineShenzhen 518060, China
| | - Bai-Sui Feng
- Department of Gastroenterology, The Second Hospital, Zhengzhou UniversityZhengzhou 450052, China
| | - Peng-Yuan Zheng
- Department of Gastroenterology, The Fifth Hospital, Zhengzhou UniversityZhengzhou 450052, China
| | - Huan-Ping Zhang
- Brain Body Institute and Department of Pathology & Molecular Medicine, McMaster UniversityHamilton, ON, L8N 3Z5, Canada
| | - Ping-Chang Yang
- The Research Center of Allergy & Immunology, Shenzhen University School of MedicineShenzhen 518060, China
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16
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Zhang L, Song J, Hou X. Mast Cells and Irritable Bowel Syndrome: From the Bench to the Bedside. J Neurogastroenterol Motil 2016; 22:181-92. [PMID: 26755686 PMCID: PMC4819856 DOI: 10.5056/jnm15137] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 12/07/2015] [Accepted: 12/26/2015] [Indexed: 12/11/2022] Open
Abstract
Irritable bowel syndrome (IBS) is traditionally defined as a functional disorder since it lacks demonstrable pathological abnormalities. However, in recent years, low grade inflammatory infiltration, often rich in mast cells, in both the small and large bowel, has been observed in some patients with IBS. The close association of mast cells with major intestinal functions, such as epithelial secretion and permeability, neuroimmune interactions, visceral sensation, and peristalsis, makes researchers and gastroenterologists to focus attention on the key roles of mast cells in the pathogenesis of IBS. Numerous studies have been carried out to identify the mechanisms in the development, infiltration, activation, and degranulation of intestinal mast cells, as well as the actions of mast cells in the processes of mucosal barrier disruption, mucosal immune dysregulation, visceral hypersensitivity, dysmotility, and local and central stress in IBS. Moreover, therapies targeting mast cells, such as mast cell stabilizers (cromoglycate and ketotifen) and antagonists of histamine and serotonin receptors, have been tried in IBS patients, and have partially exhibited considerable efficacy. This review focuses on recent advances in the role of mast cells in IBS, with particular emphasis on bridging experimental data with clinical therapeutics for IBS patients.
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Affiliation(s)
- Lei Zhang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Song
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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17
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Na H, Cho M, Chung Y. Regulation of Th2 Cell Immunity by Dendritic Cells. Immune Netw 2016; 16:1-12. [PMID: 26937227 PMCID: PMC4770095 DOI: 10.4110/in.2016.16.1.1] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/22/2016] [Accepted: 01/26/2016] [Indexed: 02/01/2023] Open
Abstract
Th2 cell immunity is required for host defense against helminths, but it is detrimental in allergic diseases in humans. Unlike Th1 cell and Th17 cell subsets, the mechanism by which dendritic cells modulate Th2 cell responses has been obscure, in part because of the inability of dendritic cells to provide IL-4, which is indispensable for Th2 cell lineage commitment. In this regard, immune cells other than dendritic cells, such as basophils and innate lymphoid cells, have been suggested as Th2 cell inducers. More recently, multiple independent researchers have shown that specialized subsets of dendritic cells mediate Th2 cell responses. This review will discuss the current understanding related to the regulation of Th2 cell responses by dendritic cells and other immune cells.
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Affiliation(s)
- Hyeongjin Na
- Laboratory of Immune Regulation, Research Institute for Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Minkyoung Cho
- Laboratory of Immune Regulation, Research Institute for Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Yeonseok Chung
- Laboratory of Immune Regulation, Research Institute for Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea
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18
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Donor-derived exosomes induce specific regulatory T cells to suppress immune inflammation in the allograft heart. Sci Rep 2016; 7:20077. [PMID: 26822278 PMCID: PMC4731812 DOI: 10.1038/srep20077] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 12/09/2015] [Indexed: 02/08/2023] Open
Abstract
To inhibit the immune inflammation in the allografts can be beneficial to organ transplantation. This study aims to induce the donor antigen specific regulatory T cells (Treg cell) inhibit the immune inflammation in the allograft heart. In this study, peripheral exosomes were purified from the mouse serum. A heart transplantation mouse model was developed. The immune inflammation of the allograft heart was assessed by histology and flow cytometry. The results showed that the donor antigen-specific T helper (Th)2 pattern inflammation was observed in the allograft hearts; the inflammation was inhibited by immunizing the recipient mice with the donor-derived exosomes. Purified peripheral exosomes contained integrin MMP1a; the latter induced CD4+ T cells to express Fork head protein-3 and transforming growth factor (TGF)-β via inhibiting the Th2 transcription factor, GATA binding protein 3, in CD4+ T cells. Administration with the donor-derived exosomes significantly prolonged the allograft heart survival. We conclude that the donor-derived peripheral exosomes have the capacity to inhibit the immune inflammation in the allograft heart via inducing specific Treg cells, implicating that administration with the donor-derived exosomes may be beneficial to cardiac transplantation.
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19
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Rodrigues CP, Ferreira ACF, Pinho MP, de Moraes CJ, Bergami-Santos PC, Barbuto JAM. Tolerogenic IDO(+) Dendritic Cells Are Induced by PD-1-Expressing Mast Cells. Front Immunol 2016; 7:9. [PMID: 26834749 PMCID: PMC4724729 DOI: 10.3389/fimmu.2016.00009] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 01/11/2016] [Indexed: 12/21/2022] Open
Abstract
Mast cells (MCs) are tissue resident cells, rich in inflammatory mediators, involved in allergic reactions, and with an increasingly recognized role in immunomodulation. Dendritic cells (DCs), on the other hand, are central to the determination of immune response patterns, being highly efficient antigen-presenting cells that respond promptly to changes in their microenvironment. Here, we show that direct cell contact between immature monocyte-derived DCs (iDCs) and MC bends DCs toward tolerance induction. DCs that had direct contact with MC (MC-iDC) decreased HLA-DR but increased PD-L1 expression and stimulated regulatory T lymphocytes, which expresses FoxP3(+), secrete TGF-β and IL-10, and suppress the proliferation of mitogen-stimulated naïve T lymphocytes. Furthermore, MC-iDC expressed higher levels of indoleamine-2,3-deoxigenase (IDO), a phenomenon that was blocked by treatment of MC with anti-PD-1 or by the treatment of DCs with anti-PD-L1 or anti-PD-L2, but not by blocking of H1 and H2 histamine receptors on DCs. Contact with MC also increased phosphorylated STAT-3 levels in iDCs. When a STAT-3 inhibitor, JSI-124, was added to the DCs before contact with MC, the MC-iDC recovered their ability to induce allogeneic T cell proliferation and did not increase their IDO expression.
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Affiliation(s)
- Cecilia Pessoa Rodrigues
- Laboratory of Tumor Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Ana Carolina Franco Ferreira
- Laboratory of Tumor Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Mariana Pereira Pinho
- Laboratory of Tumor Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Cristiano Jacob de Moraes
- Laboratory of Tumor Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Patrícia Cruz Bergami-Santos
- Laboratory of Tumor Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - José Alexandre Marzagão Barbuto
- Laboratory of Tumor Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
- Center for Cellular and Molecular Studies and Therapy (NETCEM), University of Sao Paulo, São Paulo, Brazil
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