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Lei Y, Guo X, Luo Y, Niu X, Xi Y, Xiao L, He D, Bian Y, Zhang Y, Wang L, Peng X, Wang Z, Chen G. Synovial microenvironment-influenced mast cells promote the progression of rheumatoid arthritis. Nat Commun 2024; 15:113. [PMID: 38168103 PMCID: PMC10761862 DOI: 10.1038/s41467-023-44304-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 12/07/2023] [Indexed: 01/05/2024] Open
Abstract
Mast cells are phenotypically and functionally heterogeneous, and their state is possibly controlled by local microenvironment. Therefore, specific analyses are needed to understand whether mast cells function as powerful participants or dispensable bystanders in specific diseases. Here, we show that degranulation of mast cells in inflammatory synovial tissues of patients with rheumatoid arthritis (RA) is induced via MAS-related G protein-coupled receptor X2 (MRGPRX2), and the expression of MHC class II and costimulatory molecules on mast cells are upregulated. Collagen-induced arthritis mice treated with a combination of anti-IL-17A and cromolyn sodium, a mast cell membrane stabilizer, show significantly reduced clinical severity and decreased bone erosion. The findings of the present study suggest that synovial microenvironment-influenced mast cells contribute to disease progression and may provide a further mast cell-targeting therapy for RA.
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Affiliation(s)
- Yunxuan Lei
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China
| | - Xin Guo
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China
| | - Yanping Luo
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China
| | - Xiaoyin Niu
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China
| | - Yebin Xi
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China
| | - Lianbo Xiao
- Department of Joint Surgery, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Dongyi He
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
- Department of Rheumatology, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yanqin Bian
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Yong Zhang
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China
| | - Li Wang
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China
| | - Xiaochun Peng
- Department of Orthopedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Zhaojun Wang
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China.
| | - Guangjie Chen
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China.
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2
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Tung CC, Rathore APS, St. John AL. Conventional and non-conventional antigen presentation by mast cells. DISCOVERY IMMUNOLOGY 2023; 2:kyad016. [PMID: 38567067 PMCID: PMC10917180 DOI: 10.1093/discim/kyad016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/23/2023] [Accepted: 09/16/2023] [Indexed: 04/04/2024]
Abstract
Mast cells (MCs) are multifunctional immune cells that express a diverse repertoire of surface receptors and pre-stored bioactive mediators. They are traditionally recognized for their involvement in allergic and inflammatory responses, yet there is a growing body of literature highlighting their contributions to mounting adaptive immune responses. In particular, there is growing evidence that MCs can serve as antigen-presenting cells, owing to their often close proximity to T cells in both lymphoid organs and peripheral tissues. Recent studies have provided compelling support for this concept, by demonstrating the presence of antigen processing and presentation machinery in MCs and their ability to engage in classical and non-classical pathways of antigen presentation. However, there remain discrepancies and unresolved questions regarding the extent of the MC's capabilities with respect to antigen presentation. In this review, we discuss our current understanding of the antigen presentation by MCs and its influence on adaptive immunity.
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Affiliation(s)
- Chi-Ching Tung
- Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
| | - Abhay P S Rathore
- Department of Pathology, Duke University Medical Center, Durham, NC, USA
| | - Ashley L St. John
- Program in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, Singapore, Singapore
- Department of Pathology, Duke University Medical Center, Durham, NC, USA
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- SingHealth Duke-NUS Global Health Institute, Singapore, Singapore
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3
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Mezyk-Kopec R, Potin L, Medellin JEG, Salles CM, Swartz MA. TGF-β Signaling Prevents MHC Class II-Expressing Lymphatic Endothelial Cells from Reactivating Human Allogenic Memory CD4+ T Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:782-790. [PMID: 37486193 PMCID: PMC11155268 DOI: 10.4049/jimmunol.2200216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/20/2023] [Indexed: 07/25/2023]
Abstract
Lymphatic endothelial cells (LECs) express MHC class II (MHC-II) upon IFN-γ stimulation, yet recent evidence suggests that LECs cannot activate naive or memory CD4+ T cells. In this article, we show that IFN-γ-activated human dermal LECs can robustly reactivate allogeneic human memory CD4+ T cells (hCD4+ TMs), but only when TGF-β signaling is inhibited. We found that in addition to upregulating MHC-II, IFN-γ also induces LECs to upregulate glycoprotein A repetitions predominant, which anchors latent TGF-β to the membrane and potentially inhibits T cell activation. Indeed, hCD4+ TM proliferation was substantially increased when LEC-CD4+ TM cultures were treated with a TGF-β receptor type 1 inhibitor or when glycoprotein A repetitions predominant expression was silenced in LECs. Reactivated hCD4+ TMs were characterized by their proliferation, CD25 expression, and cytokine secretion. CD4+ TM reactivation was dependent on LEC expression of MHC-II, confirming direct TCR engagement. Although CD80 and CD86 were not detected on LECs, the costimulatory molecules OX40L and ICOSL were upregulated upon cytokine stimulation; however, blocking these did not affect CD4+ TM reactivation by LECs. Finally, we found that human dermal LECs also supported the maintenance of Foxp3-expressing hCD4+ TMs independently of IFN-γ-induced MHC-II. Together, these results demonstrate a role for LECs in directly modulating CD4+ TM reactivation under inflammatory conditions and point to LEC-expressed TGF-β as a negative regulator of this activation.
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Affiliation(s)
- Renata Mezyk-Kopec
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois
- Department of Cell Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology Jagiellonian University, Krakow, Poland
| | - Lambert Potin
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois
| | | | - Calixto M. Salles
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois
| | - Melody A. Swartz
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois
- Committee on Immunology, University of Chicago, Chicago, Illinois
- Ben May Department of Cancer Research, University of Chicago, Chicago, Illinois
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4
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Lee SK, Choi JY, Jung ES, Kwon JH, Jang JW, Bae SH, Yoon SK. An Immunological Perspective on the Mechanism of Drug Induced Liver Injury: Focused on Drugs for Treatment of Hepatocellular Carcinoma and Liver Transplantation. Int J Mol Sci 2023; 24:ijms24055002. [PMID: 36902432 PMCID: PMC10003078 DOI: 10.3390/ijms24055002] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/03/2023] [Indexed: 03/08/2023] Open
Abstract
The liver is frequently exposed to potentially toxic materials, and it is the primary site of clearance of foreign agents, along with many innate and adaptive immune cells. Subsequently, drug induced liver injury (DILI), which is caused by medications, herbs, and dietary supplements, often occurs and has become an important issue in liver diseases. Reactive metabolites or drug-protein complexes induce DILI via the activation of various innate and adaptive immune cells. There has been a revolutionary development of treatment drugs for hepatocellular carcinoma (HCC) and liver transplantation (LT), including immune checkpoint inhibitors (ICIs), that show high efficacy in patients with advanced HCC. Along with the high efficacy of novel drugs, DILI has become a pivotal issue in the use of new drugs, including ICIs. This review demonstrates the immunological mechanism of DILI, including the innate and adaptive immune systems. Moreover, it aims to provide drug treatment targets, describe the mechanisms of DILI, and detail the management of DILI caused by drugs for HCC and LT.
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Affiliation(s)
- Soon Kyu Lee
- Division of Hepatology, Department of Internal Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- The Catholic University Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jong Young Choi
- The Catholic University Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Division of Hepatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Correspondence:
| | - Eun Sun Jung
- Department of Pathology, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jung Hyun Kwon
- Division of Hepatology, Department of Internal Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- The Catholic University Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jeong Won Jang
- The Catholic University Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Division of Hepatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Si Hyun Bae
- The Catholic University Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Division of Hepatology, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Seung Kew Yoon
- The Catholic University Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
- Division of Hepatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
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5
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Zhou XY, Chen K, Zhang JA. Mast cells as important regulators in the development of psoriasis. Front Immunol 2022; 13:1022986. [PMID: 36405690 PMCID: PMC9669610 DOI: 10.3389/fimmu.2022.1022986] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 10/24/2022] [Indexed: 08/22/2023] Open
Abstract
Psoriasis is a chronic inflammatory immune skin disease mediated by genetic and environmental factors. As a bridge between innate and adaptive immunity, mast cells are involved in the initiation, development, and maintenance of psoriasis by interactions and communication with a variety of cells. The current review describes interactions of mast cells with T cells, Tregs, keratinocytes, adipocytes, and sensory neurons in psoriasis to emphasize the important role of mast cell-centered cell networks in psoriasis.
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Affiliation(s)
| | | | - Jia-An Zhang
- Institute of Dermatology, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Chinese Academy of Medical Science and Peking Union Medical College, Nanjing, China
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6
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Hermans MAW, Heeringa JJ, Swagemakers SGA, Schrijver B, van Daele PLA, van der Spek PJ, van Hagen PM, van Zelm MC, Dik WA. Altered leukocyte subsets and immune proteome indicate pro-inflammatory mechanisms in mastocytosis. J Allergy Clin Immunol 2022; 150:146-156.e10. [PMID: 35026208 DOI: 10.1016/j.jaci.2021.12.786] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/20/2021] [Accepted: 12/23/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Indolent systemic mastocytosis (ISM) is characterized by pathological accumulation of mast cells. The mechanism behind its phenotypic heterogeneity is not well understood. Interaction of mast cells with other immune cells might cause systemic inflammation and thereby associated symptoms. OBJECTIVE To investigate peripheral leukocyte compartments and serum immune proteome in ISM. METHODS Peripheral blood leukocyte phenotyping using flowcytometry in a cohort of 18 adults with ISM and 12 healthy controls. Targeted proteomics was performed to measure 169 proteins associated with inflammation on serum of another 20 ISM patients and 20 healthy controls. RESULTS Proportions of plasmacytoid dendritic cells (pDC) and monocytes were significantly decreased while T-helper 2 cells were increased in peripheral blood of ISM patients. Furthermore, a shift from naïve to memory T-cells was observed. Hierarchical clustering of the serum proteome revealed two distinct subgroups within ISM patients. In subgroup A (n=8), 62 proteins were significantly overexpressed, whereas subgroup B (n=12) was comparable to healthy controls. Patients in subgroup A displayed upregulated signaling pathways downstream of Toll-like receptor 4, TNF-α and interferon-γFatigue was more often present in subgroup A compared to B (75% vs. 33% respectively, p 0.06). CONCLUSIONS Altered distribution of leukocyte subsets and a pro-inflammatory proteome were observed in subsequent two cohorts of ISM patients. We hypothesize that neoplastic mast cells recruit and activate pDC, monocytes and T-cells leading to a vicious cycle of inflammation. CLINICAL IMPLICATION Characterization of inflammatory mechanisms in ISM might uncover additional targets for treatment, in particular for constitutional symptoms such as fatigue.
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Affiliation(s)
- M A W Hermans
- Department of Internal Medicine, section Allergy & Clinical Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - J J Heeringa
- Department of Internal Medicine, section Allergy & Clinical Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - S G A Swagemakers
- Department of Pathology and Bioinformatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - B Schrijver
- Laboratory of Medical Immunology, department of Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - P L A van Daele
- Department of Internal Medicine, section Allergy & Clinical Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands; Laboratory of Medical Immunology, department of Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - P J van der Spek
- Department of Pathology and Bioinformatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - P M van Hagen
- Department of Internal Medicine, section Allergy & Clinical Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands; Laboratory of Medical Immunology, department of Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M C van Zelm
- Department of Immunology and Pathology, Central Clinical School, Monash University and Alfred Hospital, Melbourne, Victoria, Australia
| | - W A Dik
- Laboratory of Medical Immunology, department of Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
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7
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Ogawa Y, Kinoshita M, Kawamura T, Shimada S. Intracellular TLRs of Mast Cells in Innate and Acquired Immunity. Handb Exp Pharmacol 2022; 276:133-159. [PMID: 34505203 DOI: 10.1007/164_2021_540] [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] [Indexed: 06/13/2023]
Abstract
Mast cells (MCs) distribute to interface tissues with environment, such as skin, airway, and gut mucosa, thereby functioning as the sentinel against invading allergens and pathogens. To respond to and exclude these external substances promptly, MCs possess granules containing inflammatory mediators, including heparin, proteases, tumor necrosis factor, and histamine, and produce these mediators as a consequence of degranulation within minutes of activation. As a delayed response to external substances, MCs de novo synthesize inflammatory mediators, such as cytokines and chemokines, by sensing pathogen- and damage-associated molecular patterns through their pattern recognition receptors, including Toll-like receptors (TLRs). A substantial number of studies have reported immune responses by MCs through surface TLR signaling, particularly TLR2 and TLR4. However, less attention has been paid to immune responses through nucleic acid-recognizing intracellular TLRs. Among intracellular TLRs, human and rodent MCs express TLR3, TLR7, and TLR9, but not TLR8. Some virus infections modulate intracellular TLR expression in MCs. MC-derived mediators, such as histamine, cysteinyl leukotrienes, LL-37, and the granulocyte-macrophage colony-stimulating factor, have also been reported to modulate intracellular TLR expression in an autocrine and/or paracrine fashion. Synthetic ligands for intracellular TLRs and some viruses are sensed by intracellular TLRs of MCs, leading to the production of inflammatory cytokines and chemokines including type I interferons. These MC responses initiate and facilitate innate responses and the subsequent recruitment of additional innate effector cells. MCs also associate with the regulation of adaptive immunity. In this overview, the expression of intracellular TLRs in MCs and the recognition of pathogens, including viruses, by intracellular TLRs in MCs were critically evaluated.
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Affiliation(s)
- Youichi Ogawa
- Department of Dermatology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan.
| | - Manao Kinoshita
- Department of Dermatology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Tatsuyoshi Kawamura
- Department of Dermatology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Shinji Shimada
- Department of Dermatology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
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8
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Woźniak E, Owczarczyk-Saczonek A, Placek W. Psychological Stress, Mast Cells, and Psoriasis-Is There Any Relationship? Int J Mol Sci 2021; 22:ijms222413252. [PMID: 34948049 PMCID: PMC8705845 DOI: 10.3390/ijms222413252] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 12/06/2021] [Indexed: 12/19/2022] Open
Abstract
Psoriasis vulgaris is a common inflammatory skin disease with still unknown pathogenesis. In recent years, genetic and environmental factors have been mentioned as the main causes. Among environmental factors, many researchers are trying to investigate the role of mental health and its importance in the development of many diseases. In the pathophysiology of psoriasis, the role of the interaction between the nervous, endocrine, and immune systems are often emphasized. So far, no one has clearly indicated where the pathological process begins. One of the hypotheses is that chronic stress influences the formation of hormonal changes (lowering the systemic cortisol level), which favors the processes of autoimmunity. In inflammatory skin conditions, mast cells (MCs) are localized close to blood vessels and peripheral nerves, where they probably play an important role in the response to environmental stimuli and emotional stress. They are usually connected with a fast immune response, not only in allergies but also a protective response to microbial antigens. Among many cells of the immune system, MCs have receptors for the hormones of the hypothalamic-pituitary-adrenal (HPA) axis on their surface. In this review, we will try to take a closer look at the role of MCs in the pathophysiology of psoriasis. This knowledge may give the opportunity to search for therapeutic solutions.
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9
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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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10
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Min HK, Kim KW, Lee SH, Kim HR. Roles of mast cells in rheumatoid arthritis. Korean J Intern Med 2020; 35:12-24. [PMID: 31722515 PMCID: PMC6960056 DOI: 10.3904/kjim.2019.271] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 10/08/2019] [Indexed: 12/11/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory arthritis, and the complex interaction and activation of innate and adaptive immune cells are involved in RA pathogenesis. Mast cells (MCs) are one of the tissue-resident innate immune cells, and they contribute to RA pathogenesis. In the present review, the evidence of the pathologic role of MC in RA is discussed based on human and animal data. In addition, the potential role of MC in RA pathogenesis and the research area that should be focused on in the future are suggested.
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Affiliation(s)
- Hong Ki Min
- Division of Rheumatology, Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Kyoung-Woon Kim
- Conversant Research Consortium in Immunologic Disease, College of Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - Sang-Heon Lee
- Division of Rheumatology, Department of Internal Medicine, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea
| | - Hae-Rim Kim
- Division of Rheumatology, Department of Internal Medicine, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea
- Correspondence to Hae-Rim Kim, M.D. Division of Rheumatology, Department of Internal Medicine, Konkuk University Medical Center, 120-1 Neungdong-ro, Gwangjin-gu, Seoul 05030, Korea Tel: +82-2-2030-7542, Fax: +82-2-2030-7728, E-mail:
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11
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Varricchi G, de Paulis A, Marone G, Galli SJ. Future Needs in Mast Cell Biology. Int J Mol Sci 2019; 20:E4397. [PMID: 31500217 PMCID: PMC6769913 DOI: 10.3390/ijms20184397] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/02/2019] [Accepted: 09/04/2019] [Indexed: 12/14/2022] Open
Abstract
The pathophysiological roles of mast cells are still not fully understood, over 140 years since their description by Paul Ehrlich in 1878. Initial studies have attempted to identify distinct "subpopulations" of mast cells based on a relatively small number of biochemical characteristics. More recently, "subtypes" of mast cells have been described based on the analysis of transcriptomes of anatomically distinct mouse mast cell populations. Although mast cells can potently alter homeostasis, in certain circumstances, these cells can also contribute to the restoration of homeostasis. Both solid and hematologic tumors are associated with the accumulation of peritumoral and/or intratumoral mast cells, suggesting that these cells can help to promote and/or limit tumorigenesis. We suggest that at least two major subsets of mast cells, MC1 (meaning anti-tumorigenic) and MC2 (meaning pro-tumorigenic), and/or different mast cell mediators derived from otherwise similar cells, could play distinct or even opposite roles in tumorigenesis. Mast cells are also strategically located in the human myocardium, in atherosclerotic plaques, in close proximity to nerves and in the aortic valve. Recent studies have revealed evidence that cardiac mast cells can participate both in physiological and pathological processes in the heart. It seems likely that different subsets of mast cells, like those of cardiac macrophages, can exert distinct, even opposite, effects in different pathophysiological processes in the heart. In this chapter, we have commented on possible future needs of the ongoing efforts to identify the diverse functions of mast cells in health and disease.
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Affiliation(s)
- Gilda Varricchi
- Department of Translational Medical Sciences (DISMET), University of Naples Federico II, 80138 Naples, Italy.
- Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, School of Medicine, 80138 Naples, Italy.
- WAO Center of Excellence, 80138 Naples, Italy.
| | - Amato de Paulis
- Department of Translational Medical Sciences (DISMET), University of Naples Federico II, 80138 Naples, Italy.
- Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, School of Medicine, 80138 Naples, Italy.
- WAO Center of Excellence, 80138 Naples, Italy.
| | - Gianni Marone
- Department of Translational Medical Sciences (DISMET), University of Naples Federico II, 80138 Naples, Italy.
- Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, School of Medicine, 80138 Naples, Italy.
- WAO Center of Excellence, 80138 Naples, Italy.
- Institute of Experimental Endocrinology and Oncology "Gaetano Salvatore" (IEOS), National Research Council (CNR), 80138 Naples, Italy.
| | - Stephen J Galli
- Departments of Pathology and of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305-5176, USA.
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12
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Rivellese F, Rossi FW, Galdiero MR, Pitzalis C, de Paulis A. Mast Cells in Early Rheumatoid Arthritis. Int J Mol Sci 2019; 20:ijms20082040. [PMID: 31027208 PMCID: PMC6515166 DOI: 10.3390/ijms20082040] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/18/2019] [Accepted: 04/22/2019] [Indexed: 12/17/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease characterized by inflammation of the synovial membrane, with thickening of the synovial layer, cellular hyperplasia, and infiltration of immune cells. Mast cells (MCs) are cells of the innate immunity present in healthy synovia and part of the cellular hyperplasia characterizing RA synovitis. Although their presence in synovia has been well described, the exact functions and the correlation of MCs with disease development and progression have been debated, particularly because of contradictory data obtained in animal models and from patients with longstanding disease. Here, we present a revision of the literature on MCs in RA, including the most recent observations obtained from patients with early RA, indicating MCs as relevant markers of disease severity in early RA.
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Affiliation(s)
- Felice Rivellese
- William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK.
| | - Francesca Wanda Rossi
- Department of Translational Medical Sciences (DiSMeT) and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, 80131 Naples, Italy.
| | - Maria Rosaria Galdiero
- Department of Translational Medical Sciences (DiSMeT) and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, 80131 Naples, Italy.
| | - Costantino Pitzalis
- William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK.
| | - Amato de Paulis
- Department of Translational Medical Sciences (DiSMeT) and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, 80131 Naples, Italy.
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13
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Kritikou E, van der Heijden T, Swart M, van Duijn J, Slütter B, Wezel A, Smeets HJ, Maffia P, Kuiper J, Bot I. Hypercholesterolemia Induces a Mast Cell-CD4 + T Cell Interaction in Atherosclerosis. THE JOURNAL OF IMMUNOLOGY 2019; 202:1531-1539. [PMID: 30683705 DOI: 10.4049/jimmunol.1800648] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 12/20/2018] [Indexed: 11/19/2022]
Abstract
Mast cells (MCs) are potent innate immune cells that aggravate atherosclerosis through the release of proinflammatory mediators inside atherosclerotic plaques. Similarly, CD4+ T cells are constituents of the adaptive immune response and accumulate within the plaques following lipid-specific activation by APCs. Recently it has been proposed that these two cell types can interact in a direct manner. However, no indication of such an interaction has been investigated in the context of atherosclerosis. In our study, we aimed to examine whether MCs can act as APCs in atherosclerosis, thereby modulating CD4+ T cell responses. We observed that MCs increased their MHC class II expression under hyperlipidemic conditions both in vivo and in vitro. Furthermore, we showed that MCs can present Ags in vivo via MHC class II molecules. Serum from high-fat diet-fed mice also enhanced the expression of the costimulatory molecule CD86 on cultured MCs, whereas OVA peptide-loaded MCs increased OT-II CD4+ T cell proliferation in vitro. The aortic CD4+ and TH1 cell content of atherosclerotic mice that lack MCs was reduced as compared with their wild-type counterparts. Importantly, we identified MCs that express HLA-DR in advanced human atheromata, indicating that these cells are capable of Ag presentation within human atherosclerotic plaques. Therefore, in this artice, we show that MCs may directly modulate adaptive immunity by acting as APCs in atherosclerosis.
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Affiliation(s)
- Eva Kritikou
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2300 RA Leiden, the Netherlands;
| | - Thomas van der Heijden
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2300 RA Leiden, the Netherlands
| | - Maarten Swart
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2300 RA Leiden, the Netherlands
| | - Janine van Duijn
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2300 RA Leiden, the Netherlands
| | - Bram Slütter
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2300 RA Leiden, the Netherlands
| | - Anouk Wezel
- Department of Surgery, Haaglanden Medical Center Westeinde, 2501 CK The Hague, the Netherlands
| | - Harm J Smeets
- Department of Surgery, Haaglanden Medical Center Westeinde, 2501 CK The Hague, the Netherlands
| | - Pasquale Maffia
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, United Kingdom.,Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, United Kingdom; and.,Department of Pharmacy, University of Naples Federico II, 80138 Naples, Italy
| | - Johan Kuiper
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2300 RA Leiden, the Netherlands
| | - Ilze Bot
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, 2300 RA Leiden, the Netherlands
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14
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Varricchi G, Raap U, Rivellese F, Marone G, Gibbs BF. Human mast cells and basophils-How are they similar how are they different? Immunol Rev 2019; 282:8-34. [PMID: 29431214 DOI: 10.1111/imr.12627] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Mast cells and basophils are key contributors to allergies and other inflammatory diseases since they are the most prominent source of histamine as well as numerous additional inflammatory mediators which drive inflammatory responses. However, a closer understanding of their precise roles in allergies and other pathological conditions has been marred by the considerable heterogeneity that these cells display, not only between mast cells and basophils themselves but also across different tissue locations and species. While both cell types share the ability to rapidly degranulate and release histamine following high-affinity IgE receptor cross-linking, they differ markedly in their ability to either react to other stimuli, generate inflammatory eicosanoids or release immunomodulating cytokines and chemokines. Furthermore, these cells display considerable pharmacological heterogeneity which has stifled attempts to develop more effective anti-allergic therapies. Mast cell- and basophil-specific transcriptional profiling, at rest and after activation by innate and adaptive stimuli, may help to unravel the degree to which these cells differ and facilitate a clearer understanding of their biological functions and how these could be targeted by new therapies.
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Affiliation(s)
- Gilda Varricchi
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research, University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy
| | - Ulrike Raap
- Department of Dermatology and Allergology, University of Oldenburg, Oldenburg, Germany
| | - Felice Rivellese
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research, University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy.,Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Gianni Marone
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research, University of Naples Federico II, Naples, Italy.,WAO Center of Excellence, Naples, Italy.,Institute of Experimental Endocrinology and Oncology "Gaetano Salvatore" (IEOS), National Research Council (CNR), Naples, Italy
| | - Bernhard F Gibbs
- Department of Dermatology and Allergology, University of Oldenburg, Oldenburg, Germany
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15
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Sumpter TL, Balmert SC, Kaplan DH. Cutaneous immune responses mediated by dendritic cells and mast cells. JCI Insight 2019; 4:123947. [PMID: 30626752 DOI: 10.1172/jci.insight.123947] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
In the skin, complex cellular networks maintain barrier function and immune homeostasis. Tightly regulated multicellular cascades are required to initiate innate and adaptive immune responses. Innate immune cells, particularly DCs and mast cells, are central to these networks. Early studies evaluated the function of these cells in isolation, but recent studies clearly demonstrate that cutaneous DCs (dermal DCs and Langerhans cells) physically interact with neighboring cells and are receptive to activation signals from surrounding cells, such as mast cells. These interactions amplify immune activation. In this review, we discuss the known functions of cutaneous DC populations and mast cells and recent studies highlighting their roles within cellular networks that determine cutaneous immune responses.
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Affiliation(s)
| | | | - Daniel H Kaplan
- Department of Dermatology and.,Department of Immunology, University of Pittsburgh School of Medicine,Pittsburgh, Pennsylvania, USA
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16
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Role of Mast Cells and Type 2 Innate Lymphoid (ILC2) Cells in Lung Transplantation. J Immunol Res 2018; 2018:2785971. [PMID: 30510964 PMCID: PMC6232810 DOI: 10.1155/2018/2785971] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 08/10/2018] [Accepted: 09/14/2018] [Indexed: 01/10/2023] Open
Abstract
The multifunctional role of mast cells (MCs) in the immune system is complex and has not fully been explored. MCs reside in tissues and mucous membranes such as the lung, digestive tract, and skin which are strategically located at interfaces with the external environment. These cells, therefore, will encounter external stimuli and pathogens. MCs modulate both the innate and the adaptive immune response in inflammatory disorders including transplantation. MCs can have pro- and anti-inflammatory functions, thereby regulating the outcome of lung transplantation through secretion of mediators that allow interaction with other cell types, particularly innate lymphoid cells (ILC2). ILC2 cells are a unique population of hematopoietic cells that coordinate the innate immune response against a variety of threats including infection, tissue damage, and homeostatic disruption. In addition, MCs can modulate alloreactive T cell responses or assist in T regulatory (Treg) cell activity. This paper outlines the current understanding of the role of MCs in lung transplantation, with a specific focus on their interaction with ILC2 cells within the engrafted organ.
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17
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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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18
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Sturgill JL. Sphingolipids and their enigmatic role in asthma. Adv Biol Regul 2018; 70:74-81. [PMID: 30197277 PMCID: PMC6560640 DOI: 10.1016/j.jbior.2018.09.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 09/04/2018] [Indexed: 12/24/2022]
Abstract
Asthma is defined as a chronic inflammatory condition in the lung and is characterized by episodic shortness of breath with expiratory wheezing and cough. Asthma is a serious public health concern globally with an estimated incidence over 300 million. Asthma is a complex disease in that it manifests as disease of gene and environmental interactions. Sphingolipids are a unique class of lipids involved in a host of biological functions ranging from serving as key cellular membrane lipids to acting as critical signaling molecules. To date sphingolipids have been studied across various human conditions ranging from neurological disorders to cancer to infection to autoimmunity. This review will focus on the role of sphingolipids in asthma development and pathology with particular focus on the role of mast cell sphingolipid biology.
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Affiliation(s)
- Jamie L Sturgill
- University of Kentucky, Department of Internal Medicine, Division of Pulmonary, Critical Care, & Sleep Medicine, 740 South Limestone St, Lexington, KY 40536, United States.
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19
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Rivellese F, Mauro D, Nerviani A, Pagani S, Fossati-Jimack L, Messemaker T, Kurreeman FAS, Toes REM, Ramming A, Rauber S, Schett G, Jones GW, Jones SA, Rossi FW, de Paulis A, Marone G, El Shikh MEM, Humby F, Pitzalis C. Mast cells in early rheumatoid arthritis associate with disease severity and support B cell autoantibody production. Ann Rheum Dis 2018; 77:1773-1781. [PMID: 30127058 DOI: 10.1136/annrheumdis-2018-213418] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Mast cells (MCs) are involved in the pathogenesis of rheumatoid arthritis (RA). However, their contribution remains controversial. To establish their role in RA, we analysed their presence in the synovium of treatment-naïve patients with early RA and their association and functional relationship with histological features of synovitis. METHODS Synovial tissue was obtained by ultrasound-guided biopsy from treatment-naïve patients with early RA (n=99). Immune cells (CD3/CD20/CD138/CD68) and their relationship with CD117+MCs in synovial tissue were analysed by immunohistochemistry (IHC) and immunofluorescence (IF). The functional involvement of MCs in ectopic lymphoid structures (ELS) was investigated in vitro, by coculturing MCs with naïve B cells and anticitrullinated protein antibodies (ACPA)-producing B cell clones, and in vivo in interleukin-27 receptor alpha (IL27ra)-deficient and control mice during antigen-induced arthritis (AIA). RESULTS High synovial MC counts are associated with local and systemic inflammation, autoantibody positivity and high disease activity. IHC/IF showed that MCs reside at the outer border of lymphoid aggregates. Furthermore, human MCs promote the activation and differentiation of naïve B cells and induce the production of ACPA, mainly via contact-dependent interactions. In AIA, synovial MC numbers increase in IL27ra deficient mice, in association with ELS and worse disease activity. CONCLUSIONS Synovial MCs identify early RA patients with a severe clinical form of synovitis characterised by the presence of ELS.
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Affiliation(s)
- Felice Rivellese
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Daniele Mauro
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Alessandra Nerviani
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Sara Pagani
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Liliane Fossati-Jimack
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Tobias Messemaker
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Fina A S Kurreeman
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - René E M Toes
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Andreas Ramming
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Simon Rauber
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Gareth W Jones
- Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK
| | - Simon A Jones
- Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK
| | - Francesca Wanda Rossi
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), World Allergy Organization (WAO) Center of Excellence, University of Naples Federico II, Naples, Italy
| | - Amato de Paulis
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), World Allergy Organization (WAO) Center of Excellence, University of Naples Federico II, Naples, Italy
| | - Gianni Marone
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI), World Allergy Organization (WAO) Center of Excellence, University of Naples Federico II, Naples, Italy.,Institute of Experimental Endocrinology and Oncology 'Gateano Salvatore' (IEOS), National Research Council (CNR), Naples, Italy
| | - Mohey Eldin M El Shikh
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Frances Humby
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Costantino Pitzalis
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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20
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Saito S, Quadery AF. Staphylococcus aureus Lipoprotein Induces Skin Inflammation, Accompanied with IFN-γ-Producing T Cell Accumulation through Dermal Dendritic Cells. Pathogens 2018; 7:pathogens7030064. [PMID: 30060633 PMCID: PMC6161079 DOI: 10.3390/pathogens7030064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/27/2018] [Accepted: 07/27/2018] [Indexed: 02/02/2023] Open
Abstract
Staphylococcus aureus (S. aureus) is a commensal bacteria on the human skin, which causes serious skin inflammation. Several immune cells, especially effector T cells (Teff), have been identified as key players in S. aureus-derived skin inflammation. However, the bacterial component that induces dramatic host immune responses on the skin has not been well characterized. Here, we report that S. aureus lipoprotein (SA-LP) was recognized by the host immune system as a strong antigen, so this response induced severe skin inflammation. SA-LP activated dendritic cells (DCs), and this activation led to Teff accumulation on the inflamed skin in the murine intradermal (ID) injection model. The skin-accumulated Teff pool was established by IFN-ɤ-producing CD4+ and CD8+T (Th1 and Tc1). SA-LP activated dermal DC (DDC) in a dominant manner, so that these DCs were presumed to possess the strong responsibility of SA-LP-specific Teff generation in the skin-draining lymph nodes (dLN). SA-LP activated DC transfer into the mice ear, which showed similar inflammation, accompanied with Th1 and Tc1 accumulation on the skin. Thus, we revealed that SA-LP has a strong potential ability to establish skin inflammation through the DC-Teff axis. This finding provides novel insights not only for therapy, but also for the prevention of S. aureus-derived skin inflammation.
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Affiliation(s)
- Suguru Saito
- Division of Clinical Nephrology and Rheumatology, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata 9518510, Japan.
- Institute of Bio Medical Science, Academia Sinica, Taipei 115, Taiwan.
| | - Ali F Quadery
- Biofluid Biomarker Center, Niigata University, Niigata 9502181, Japan.
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21
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Skaper SD, Facci L, Zusso M, Giusti P. An Inflammation-Centric View of Neurological Disease: Beyond the Neuron. Front Cell Neurosci 2018; 12:72. [PMID: 29618972 PMCID: PMC5871676 DOI: 10.3389/fncel.2018.00072] [Citation(s) in RCA: 292] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 02/27/2018] [Indexed: 12/13/2022] Open
Abstract
Inflammation is a complex biological response fundamental to how the body deals with injury and infection to eliminate the initial cause of cell injury and effect repair. Unlike a normally beneficial acute inflammatory response, chronic inflammation can lead to tissue damage and ultimately its destruction, and often results from an inappropriate immune response. Inflammation in the nervous system (“neuroinflammation”), especially when prolonged, can be particularly injurious. While inflammation per se may not cause disease, it contributes importantly to disease pathogenesis across both the peripheral (neuropathic pain, fibromyalgia) and central [e.g., Alzheimer disease, Parkinson disease, multiple sclerosis, motor neuron disease, ischemia and traumatic brain injury, depression, and autism spectrum disorder] nervous systems. The existence of extensive lines of communication between the nervous system and immune system represents a fundamental principle underlying neuroinflammation. Immune cell-derived inflammatory molecules are critical for regulation of host responses to inflammation. Although these mediators can originate from various non-neuronal cells, important sources in the above neuropathologies appear to be microglia and mast cells, together with astrocytes and possibly also oligodendrocytes. Understanding neuroinflammation also requires an appreciation that non-neuronal cell—cell interactions, between both glia and mast cells and glia themselves, are an integral part of the inflammation process. Within this context the mast cell occupies a key niche in orchestrating the inflammatory process, from initiation to prolongation. This review will describe the current state of knowledge concerning the biology of neuroinflammation, emphasizing mast cell-glia and glia-glia interactions, then conclude with a consideration of how a cell's endogenous mechanisms might be leveraged to provide a therapeutic strategy to target neuroinflammation.
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Affiliation(s)
- Stephen D Skaper
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
| | - Laura Facci
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
| | - Morena Zusso
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
| | - Pietro Giusti
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua, Italy
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22
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Odaka T, Suetake H, Maeda T, Miyadai T. Teleost Basophils Have IgM-Dependent and Dual Ig-Independent Degranulation Systems. THE JOURNAL OF IMMUNOLOGY 2018. [PMID: 29514952 DOI: 10.4049/jimmunol.1701051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Recently, mammalian basophils have been highlighted as having roles in allergy and antiparasitic immunity; however, there is little information about the functions and evolutionary origin of basophils, because they are the least abundant leukocyte in most vertebrates. In this study, we characterized the teleost basophils that are abundant in the peripheral blood of fugu (Takifugu rubripes). Fugu basophils have two distinct granules: reddish-purple and dark violet ones. Teleost fish do not have IgG and IgE, but we found that fugu IgM bound on the surface of the basophils, and the cross-linked IgM induced degranulation of both types of granules. This indicates that teleost basophils can be activated in an Ab-dependent manner. Furthermore, papain induced the degranulation of the reddish-purple granules, which contain histamine, and the released granules stimulated the migration of various leukocytes. In contrast, chitin elicited the degranulation of the dark violet granules, which resulted in CD4+ T cell-specific migration. Thus, fugu basophils control immune responses via two distinct Ab-independent mechanisms. In addition, fugu basophils endocytosed soluble Ag and expressed MHC class II and B7-H1/DC. These findings suggested that fugu basophils can interact with T cells as APCs. Thus, the Ab-dependent basophil activation predates the emergence of IgG and IgE, and fish basophils exhibit different dynamics and features of degranulation to distinct stimuli compared with mammalian basophils. Some features of teleost basophils are more similar to those of mammalian mast cells than to those of mammalian basophils.
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Affiliation(s)
- Tomoyuki Odaka
- Faculty of Marine Science and Technology, Fukui Prefectural University, Obama, Fukui 917-0003, Japan
| | - Hiroaki Suetake
- Faculty of Marine Science and Technology, Fukui Prefectural University, Obama, Fukui 917-0003, Japan
| | - Tomoki Maeda
- Faculty of Marine Science and Technology, Fukui Prefectural University, Obama, Fukui 917-0003, Japan
| | - Toshiaki Miyadai
- Faculty of Marine Science and Technology, Fukui Prefectural University, Obama, Fukui 917-0003, Japan
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23
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Frossi B, Mion F, Pucillo C. Deciphering new mechanisms on T-cell costimulation by human mast cells. Eur J Immunol 2017; 46:1105-8. [PMID: 27152892 DOI: 10.1002/eji.201646390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 03/30/2016] [Accepted: 04/15/2016] [Indexed: 01/05/2023]
Abstract
It is well established that full activation of T cells to recognize a specific antigen requires additional signals. These secondary signals are generated by the interaction of costimulatory molecules expressed on APCs. Classical APCs include DCs, macrophages, Langerhans cells, and B cells. However, in recent years, several haematopoietic and nonhaematopoietic cells have been described to express MHC class II antigens and, in appropriate conditions, costimulatory molecules. In this issue, Suurmond et al. [Eur. J. Immunol. 2016. 46: 1132-1141] show, for the first time, that human mast cells not only express costimulatory molecules of the TNF-receptor and CD28 families, but can also costimulate T cells through a yet-to-be-defined CD28-independent interaction.
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Affiliation(s)
- Barbara Frossi
- Laboratory of Immunology, Department of Medical and Biological Sciences, University of Udine, Udine, Italy
| | - Francesca Mion
- Laboratory of Immunology, Department of Medical and Biological Sciences, University of Udine, Udine, Italy
| | - Carlo Pucillo
- Laboratory of Immunology, Department of Medical and Biological Sciences, University of Udine, Udine, Italy
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24
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Lotfi-Emran S, Ward BR, Le QT, Pozez AL, Manjili MH, Woodfolk JA, Schwartz LB. Human mast cells present antigen to autologous CD4 + T cells. J Allergy Clin Immunol 2017. [PMID: 28624612 DOI: 10.1016/j.jaci.2017.02.048] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Mast cells (MCs), the primary effector cell of the atopic response, participate in immune defense at host/environment interfaces, yet the mechanisms by which they interact with CD4+ T cells has been controversial. OBJECTIVE We used in situ-matured primary human MCs and matched CD4+ T cells to diligently assess the ability of MCs to act as antigen-presenting cells. METHODS We examined mature human skin-derived MCs using flow cytometry for expression of antigen-presenting molecules, for their ability to stimulate CD4+ T cells to express CD25 and proliferate when exposed to superantigen or to cytomegalovirus (CMV) antigen using matched T cells and MCs from CMV-seropositive or CMV-seronegative donors, and for antigen uptake. Subcellular localization of antigen, HLA molecules, and tryptase was analyzed by using structured illumination microscopy. RESULTS Our data show that IFN-γ induces HLA class II, HLA-DM, CD80, and CD40 expression on MCs, whereas MCs take up soluble and particulate antigens in an IFN-γ-independent manner. IFN-γ-primed MCs guide activation of T cells by Staphylococcus aureus superantigen and, when preincubated with CMV antigens, induce a recall CD4+ TH1 proliferation response only in CMV-seropositive donors. MCs co-opt their secretory granules for antigen processing and presentation. Consequently, MC degranulation increases surface delivery of HLA class II/peptide, further enhancing stimulation of T-cell proliferation. CONCLUSIONS IFN-γ primes human MCs to activate T cells through superantigen and to present CMV antigen to TH1 cells, co-opting MC secretory granules for antigen processing and presentation and creating a feed-forward loop of T-cell-MC cross-activation.
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Affiliation(s)
- Sahar Lotfi-Emran
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Brant R Ward
- Division of Rheumatology, Allergy and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Quang T Le
- Division of Rheumatology, Allergy and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Andrea L Pozez
- Division of Plastic and Reconstructive Surgery, Virginia Commonwealth University, Richmond, Va
| | - Masoud H Manjili
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Va; Massey Cancer Center, Virginia Commonwealth University, Richmond, Va
| | - Judith A Woodfolk
- Division of Asthma, Allergy, and Immunology, University of Virginia, Charlottesville, Va
| | - Lawrence B Schwartz
- Division of Rheumatology, Allergy and Immunology, Virginia Commonwealth University, Richmond, Va.
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Rivellese F, Nerviani A, Rossi FW, Marone G, Matucci-Cerinic M, de Paulis A, Pitzalis C. Mast cells in rheumatoid arthritis: friends or foes? Autoimmun Rev 2017; 16:557-563. [PMID: 28411167 DOI: 10.1016/j.autrev.2017.04.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 02/17/2017] [Indexed: 12/21/2022]
Abstract
Mast cells are tissue-resident cells of the innate immunity, implicated in the pathogenesis of many autoimmune diseases, including rheumatoid arthritis (RA). They are present in synovia and their activation has been linked to the potentiation of inflammation in the course of RA. However, recent investigations questioned the role of mast cells in arthritis. In particular, animal models generated conflicting results, so that many of their pro-inflammatory, i.e. pro-arthritogenic functions, even though supported by robust experimental evidence, have been labelled as redundant. At the same time, a growing body of evidence suggests that mast cells can act as tunable immunomodulatory cells. These characteristics, not yet fully understood in the context of RA, could partially explain the inconsistent results obtained with experimental models, which do not account for the pro- and anti-inflammatory functions exerted in more chronic heterogeneous conditions such as RA. Here we present an overview of the current knowledge on mast cell involvement in RA, including the intriguing hypothesis of mast cells acting as subtle immunomodulatory cells and the emerging concept of synovial mast cells as potential biomarkers for patient stratification.
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Affiliation(s)
- Felice Rivellese
- William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.
| | - Alessandra Nerviani
- William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Francesca Wanda Rossi
- Department of Translational Medical Sciences (DiSMeT) and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, 80131 Naples, Italy
| | - Gianni Marone
- Department of Translational Medical Sciences (DiSMeT) and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, 80131 Naples, Italy; Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council (CNR), Naples, Italy
| | - Marco Matucci-Cerinic
- Department of Experimental and Clinical Medicine, Division of Rheumatology AOUC, University of Florence, Florence, Italy
| | - Amato de Paulis
- Department of Translational Medical Sciences (DiSMeT) and Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, 80131 Naples, Italy
| | - Costantino Pitzalis
- William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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Abstract
ABSTRACT
Asthma is a heterogeneous chronic inflammatory disorder of the airways, and not surprisingly, many myeloid cells play a crucial role in pathogenesis. Antigen-presenting dendritic cells are the first to recognize the allergens, pollutants, and viruses that are implicated in asthma pathogenesis, and subsequently initiate the adaptive immune response by migrating to lymph nodes. Eosinophils are the hallmark of type 2 inflammation, releasing toxic compounds in the airways and contributing to airway remodeling. Mast cells and basophils control both the early- and late-phase allergic response and contribute to alterations in smooth muscle reactivity. Finally, relatively little is known about neutrophils and macrophages in this disease. Although many of these myeloid cells respond well to treatment with inhaled steroids, there is now an increasing armamentarium of targeted biologicals that can specifically eliminate only one myeloid cell population, like eosinophils. It is only with those new tools that we will be able to fully understand the role of myeloid cells in chronic asthma in humans.
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Skaper SD, Facci L, Zusso M, Giusti P. Neuroinflammation, Mast Cells, and Glia: Dangerous Liaisons. Neuroscientist 2017; 23:478-498. [PMID: 29283023 DOI: 10.1177/1073858416687249] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The perspective of neuroinflammation as an epiphenomenon following neuron damage is being replaced by the awareness of glia and their importance in neural functions and disorders. Systemic inflammation generates signals that communicate with the brain and leads to changes in metabolism and behavior, with microglia assuming a pro-inflammatory phenotype. Identification of potential peripheral-to-central cellular links is thus a critical step in designing effective therapeutics. Mast cells may fulfill such a role. These resident immune cells are found close to and within peripheral nerves and in brain parenchyma/meninges, where they exercise a key role in orchestrating the inflammatory process from initiation through chronic activation. Mast cells and glia engage in crosstalk that contributes to accelerate disease progression; such interactions become exaggerated with aging and increased cell sensitivity to stress. Emerging evidence for oligodendrocytes, independent of myelin and support of axonal integrity, points to their having strong immune functions, innate immune receptor expression, and production/response to chemokines and cytokines that modulate immune responses in the central nervous system while engaging in crosstalk with microglia and astrocytes. In this review, we summarize the findings related to our understanding of the biology and cellular signaling mechanisms of neuroinflammation, with emphasis on mast cell-glia interactions.
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Affiliation(s)
- Stephen D Skaper
- 1 Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Italy
| | - Laura Facci
- 1 Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Italy
| | - Morena Zusso
- 1 Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Italy
| | - Pietro Giusti
- 1 Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Italy
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Suurmond J, Habets KLL, Dorjée AL, Huizinga TW, Toes REM. Expansion of Th17 Cells by Human Mast Cells Is Driven by Inflammasome-Independent IL-1β. THE JOURNAL OF IMMUNOLOGY 2016; 197:4473-4481. [PMID: 27799306 DOI: 10.4049/jimmunol.1502640] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 10/03/2016] [Indexed: 01/12/2023]
Abstract
Mast cells (MC) are most well known for their role in innate immune responses. However, MC are increasingly recognized as important regulators of adaptive immune responses, especially in setting the outcome of T cell responses. In this study we determined the effect of MC on cytokine production by naive and memory human Th cells. CD4+ T cells were cultured with MC supernatant or control medium, after which cytokine production by T cells was determined. Supernatant of activated MC specifically increased the number of IL-17-producing T cells. This enhancement of Th17 cell number was specifically observed for the memory CD4+ T cell population and not for the naive CD4+ T cell population. The effect of MC was inhibited for ∼80% by blocking Abs to IL-1β and the rIL-1R antagonist anakinra. Importantly, secretion of active IL-1β by MC was independent of caspase activity, indicating that Th17 cell expansion by MC occurred through inflammasome-independent IL-1β. Together, these studies reveal a role for human MC in setting the outcome of T cell responses through release of caspase-independent IL-1β, and provide evidence for a novel contribution of MC in boosting the Th17 axis in mucosal immune responses.
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Affiliation(s)
- Jolien Suurmond
- Department of Rheumatology, Leiden University Medical Center, 2300 RC Leiden, the Netherlands
| | - Kim L L Habets
- Department of Rheumatology, Leiden University Medical Center, 2300 RC Leiden, the Netherlands
| | - Annemarie L Dorjée
- Department of Rheumatology, Leiden University Medical Center, 2300 RC Leiden, the Netherlands
| | - Tom W Huizinga
- Department of Rheumatology, Leiden University Medical Center, 2300 RC Leiden, the Netherlands
| | - René E M Toes
- Department of Rheumatology, Leiden University Medical Center, 2300 RC Leiden, the Netherlands
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29
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van Schaarenburg RA, Suurmond J, Habets KLL, Brouwer MC, Wouters D, Kurreeman FAS, Huizinga TWJ, Toes REM, Trouw LA. The production and secretion of complement component C1q by human mast cells. Mol Immunol 2016; 78:164-170. [PMID: 27648858 DOI: 10.1016/j.molimm.2016.09.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/31/2016] [Accepted: 09/01/2016] [Indexed: 10/21/2022]
Abstract
C1q is the initiation molecule of the classical pathway of the complement system and is produced by macrophages and immature dendritic cells. As mast cells share the same myeloid progenitor cells, we have studied whether also mast cells can produce and secrete C1q. Mast cells were generated in vitro from CD34+ progenitor cells from buffy coats or cord blood. Fully differentiated mast cells were shown by both RNA sequencing and qPCR to express C1QA, C1QB and C1QC. C1q produced by mast cells has a similar molecular make-up as serum C1q. Reconstituting C1q depleted serum with mast cell supernatant in haemolytic assays, indicated that C1q secreted by mast cells is functionally active. The level of C1q in supernatants produced under basal conditions was considerably enhanced upon stimulation with LPS, dexamethasone in combination with IFN- γ or via FcεRI triggering. Mast cells in human tissues stained positive for C1q in both healthy and in inflamed tissue. Moreover, mast cells in healthy and diseased skin appear to be the predominant C1q positive cells. Together, our data reveal that mast cells are able to produce and secrete functional active C1q and indicate mast cells as a local source of C1q in human tissue.
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Affiliation(s)
| | - Jolien Suurmond
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands; The Feinstein Institute for Medical Research, New York City, United States
| | - Kim L L Habets
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Mieke C Brouwer
- Department of Immunopathology, Sanquin Research, Amsterdam, The Netherlands
| | - Diana Wouters
- Department of Immunopathology, Sanquin Research, Amsterdam, The Netherlands
| | - Fina A S Kurreeman
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Tom W J Huizinga
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - René E M Toes
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Leendert A Trouw
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
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Groot Kormelink T, Arkesteijn GJA, van de Lest CHA, Geerts WJC, Goerdayal SS, Altelaar MAF, Redegeld FA, Nolte-'t Hoen ENM, Wauben MHM. Mast Cell Degranulation Is Accompanied by the Release of a Selective Subset of Extracellular Vesicles That Contain Mast Cell-Specific Proteases. THE JOURNAL OF IMMUNOLOGY 2016; 197:3382-3392. [PMID: 27619994 DOI: 10.4049/jimmunol.1600614] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 08/12/2016] [Indexed: 12/21/2022]
Abstract
Mast cells (MC) are well known for their effector role in allergic disorders; moreover, they are associated with diverse modulatory effects in innate and adaptive immunity. It is largely unclear how MC exert these modulating functions. In this article, we show that IgE-mediated MC degranulation leads to a rapid release of high quantities of extracellular vesicles (EV), comparable to the release of preformed mediators. EV are submicron structures composed of lipid bilayers, proteins, and nucleic acids that are released by cells in a regulated fashion and are involved in intercellular communication. Primary murine mucosal-type MC and connective tissue-type MC released phenotypically different EV populations depending on the stimulus they received. Although unstimulated MC constitutively released CD9+ EV, degranulation was accompanied by the release of CD63+ EV, which correlated with release of the soluble mediator β-hexosaminidase. This CD63+ EV subset was smaller and exhibited a higher buoyant density and distinct phospholipid composition compared with CD9+ EV. Marked differences were observed for phosphatidylinositol, phosphatidic acid, and bis(monoacylglycero)phosphate species. Strikingly, proteomic analysis of CD63+ EV from connective tissue-type MC unveiled an abundance of MC-specific proteases. With regard to carboxypeptidase A3, it was confirmed that the enzyme was EV associated and biologically active. Our data demonstrate that, depending on their activation status, MC release distinct EV subsets that differ in composition and protease activity and are indicative of differential immunological functions. Concerning the strategic tissue distribution of MC and the presence of degranulated MC in various (allergic) disorders, MC-derived EV should be considered potentially important immune regulators.
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Affiliation(s)
- Tom Groot Kormelink
- Department of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, the Netherlands;
| | - Ger J A Arkesteijn
- Department of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, the Netherlands.,Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, the Netherlands
| | - Chris H A van de Lest
- Department of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, the Netherlands
| | - Willie J C Geerts
- Biomolecular Imaging, Bijvoet Center, Utrecht University, 3584 CH Utrecht, the Netherlands
| | - Soenita S Goerdayal
- Biomolecular Mass Spectrometry and Proteomics Group, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CH Utrecht, the Netherlands; and
| | - Maarten A F Altelaar
- Biomolecular Mass Spectrometry and Proteomics Group, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CH Utrecht, the Netherlands; and
| | - Frank A Redegeld
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, 3584 CG Utrecht, the Netherlands
| | - Esther N M Nolte-'t Hoen
- Department of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, the Netherlands
| | - Marca H M Wauben
- Department of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, the Netherlands
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Zakeri A, Yazdi FG. Toll-like receptor-mediated involvement of innate immune cells in asthma disease. Biochim Biophys Acta Gen Subj 2016; 1861:3270-3277. [PMID: 27543676 DOI: 10.1016/j.bbagen.2016.08.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 08/15/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Innate immune cells as the first line of defense are adept at recognizing and triggering appropriate response against various pathogens. Apart from the protective functions, the innate immunity plays an essential role in mediation of allergic responses. Dendritic cells (DCs) and airway epithelial cells (AECs) along with other innate cells such as granulocytes, natural killer cells (NKs), natural killer T cells (NKTs), and alternatively activated macrophages (AAMs) are able to orchestrate allergic responses, especially asthma. Chronic stimulation of TLRs by airway stimuli induces local inflammation which gradually results in the recruitment and settling of innate cells around airways. SCOPE OF REVIEW This review discusses how recruitment and accumulation of the inflammatory cells in the site of insult facilitate hypersensitivity reactions and initiate airway inflammation. We indicate that these cells are well equipped to highly sensitive receptors known as toll-like receptors (TLRs) making them fit to prime adaptive immune response. Based on emerging findings, we highlight the pivotal role of TLRs in regulation of innate cells function in the context of asthma disease. MAJOR CONCLUSIONS Stimulation of the TLRs of innate cells by allergens has been found to accelerate and regulate allergic airway inflammation. In fact, the sophisticated interaction between environmental allergens and TLRs leads to release of various pro-inflammatory mediators from innate cells supporting asthma development. GENERAL SIGNIFICANCE This review highlights that TLRs have a substantial role in priming innate cells and cytokine release, suggesting that the involvement of TLRs of innate immune cells can modulate the function of these cells in asthma disease.
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Affiliation(s)
- Amin Zakeri
- Immunology Section, Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Fariba Ghiamati Yazdi
- Department of Food Science and Technology, Faculty of Agriculture, Isfahan University of Technology, Isfahan 84156, Iran
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32
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Association between rheumatoid arthritis and systemic mastocytosis: a case report and literature review. Clin Rheumatol 2016; 35:2619-23. [DOI: 10.1007/s10067-016-3368-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 07/24/2016] [Indexed: 10/21/2022]
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33
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Suurmond J, van der Velden D, Kuiper J, Bot I, Toes RE. Mast cells in rheumatic disease. Eur J Pharmacol 2016; 778:116-24. [DOI: 10.1016/j.ejphar.2015.03.085] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 03/13/2015] [Accepted: 03/25/2015] [Indexed: 12/18/2022]
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Suurmond J, Habets KLL, Tatum Z, Schonkeren JJ, Hoen PAC', Huizinga TWJ, Laros JFJ, Toes REM, Kurreeman F. Repeated FcεRI triggering reveals modified mast cell function related to chronic allergic responses in tissue. J Allergy Clin Immunol 2016; 138:869-880. [PMID: 27033170 DOI: 10.1016/j.jaci.2016.01.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Revised: 12/18/2015] [Accepted: 01/07/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Activation of mast cells through FcεRI plays an important role in acute allergic reactions. However, little is known about the function of mast cells in patients with chronic allergic inflammation or the effect of repeated FcεRI triggering occurring in such responses. OBJECTIVE We aimed to identify changes in mast cell function after repeated FcεRI triggering and to correlate these changes to chronic allergic responses in tissue. METHODS Human cord blood-derived mast cells were treated for 2 weeks with anti-IgE. The function of naive or treated mast cells was analyzed by means of RNA sequencing, quantitative RT-PCR, flow cytometry, and functional assays. Protein secretion was measured with ELISAs and multiplex assays. RESULTS We observed several changes in mast cell function after repeated anti-IgE triggering. Although the acute response was dampened, we identified 289 genes significantly upregulated after repeated anti-IgE. Most of these genes (84%) were not upregulated after a single anti-IgE stimulus, indicating a significantly different response mode characterized by increased antigen presentation, response to bacteria, and chemotaxis. Changes in mast cell function were related to changes in expression of the transcription factors RXRA and BATF and others. Importantly, we found a substantial overlap between genes upregulated after repeated anti-IgE triggering and genes upregulated in tissue from patients with chronic allergy, in particular those of patients with chronic rhinosinusitis. CONCLUSION Our study provides evidence for intrinsic modulation of mast cell function on repeated FcεRI-mediated activation. The overlap with gene expression in tissues is suggestive of a direct link between repeated IgE-mediated activation of mast cells and chronic allergy.
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Affiliation(s)
- Jolien Suurmond
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Kim L L Habets
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Zuotian Tatum
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands; Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Joris J Schonkeren
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Peter A C 't Hoen
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Tom W J Huizinga
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jeroen F J Laros
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - René E M Toes
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Fina Kurreeman
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
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35
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Suurmond J, Dorjée AL, Huizinga TWJ, Toes REM. Human mast cells costimulate T cells through a CD28-independent interaction. Eur J Immunol 2016; 46:1132-41. [DOI: 10.1002/eji.201545914] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 01/05/2016] [Accepted: 02/04/2016] [Indexed: 12/24/2022]
Affiliation(s)
- Jolien Suurmond
- Department of Rheumatology; Leiden University Medical Center; Leiden The Netherlands
| | - Annemarie L. Dorjée
- Department of Rheumatology; Leiden University Medical Center; Leiden The Netherlands
| | - Tom W. J. Huizinga
- Department of Rheumatology; Leiden University Medical Center; Leiden The Netherlands
| | - René E. M. Toes
- Department of Rheumatology; Leiden University Medical Center; Leiden The Netherlands
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36
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Rivellese F, Suurmond J, Habets K, Dorjée AL, Ramamoorthi N, Townsend MJ, de Paulis A, Marone G, Huizinga TWJ, Pitzalis C, Toes REM. Ability of Interleukin-33- and Immune Complex-Triggered Activation of Human Mast Cells to Down-Regulate Monocyte-Mediated Immune Responses. Arthritis Rheumatol 2015; 67:2343-53. [PMID: 25989191 DOI: 10.1002/art.39192] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 05/07/2015] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Mast cells have been implicated in the pathogenesis of rheumatoid arthritis (RA). In particular, their activation by interleukin-33 (IL-33) has been linked to the development of arthritis in animal models. The aim of this study was to evaluate the functional responses of human mast cells to IL-33 in the context of RA. METHODS Human mast cells were stimulated with IL-33 combined with plate-bound IgG or IgG anti-citrullinated protein antibodies (ACPAs), and their effects on monocyte activation were evaluated. Cellular interactions of mast cells in RA synovium were assessed by immunofluorescence analysis, and the expression of messenger RNA (mRNA) for mast cell-specific genes was evaluated in synovial biopsy tissue from patients with early RA who were naive to treatment with disease-modifying antirheumatic drugs. RESULTS IL-33 induced the up-regulation of Fcγ receptor type IIa and enhanced the activation of mast cells by IgG, including IgG ACPAs, as indicated by the production of CXCL8/IL-8. Intriguingly, mast cell activation triggered with IL-33 and IgG led to the release of mediators such as histamine and IL-10, which inhibited monocyte activation. Synovial mast cells were found in contact with CD14+ monocyte/macrophages. Finally, mRNA levels of mast cell-specific genes were inversely associated with disease severity, and IL-33 mRNA levels showed an inverse correlation with the levels of proinflammatory markers. CONCLUSION When human mast cells are activated by IL-33, an immunomodulatory phenotype develops, with human mast cells gaining the ability to suppress monocyte activation via the release of IL-10 and histamine. These findings, together with the presence of synovial mast cell-monocyte interactions and the inverse association between the expression of mast cell genes at the synovial level and disease activity, suggest that these newly described mast cell-mediated inhibitory pathways might have a functional relevance in the pathogenesis of RA.
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Affiliation(s)
- Felice Rivellese
- Leiden University Medical Center, Leiden, The Netherlands, University of Naples Federico II, Naples, Italy, and William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | | | - Kim Habets
- Leiden University Medical Center, Leiden, The Netherlands
| | | | | | - Michael J Townsend
- Genentech Research and Early Development, South San Francisco, California
| | | | | | | | - Costantino Pitzalis
- William Harvey Research Institute and Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - René E M Toes
- Leiden University Medical Center, Leiden, The Netherlands
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37
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Bulfone-Paus S, Bahri R. Mast Cells as Regulators of T Cell Responses. Front Immunol 2015; 6:394. [PMID: 26300882 PMCID: PMC4528181 DOI: 10.3389/fimmu.2015.00394] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 07/19/2015] [Indexed: 01/05/2023] Open
Abstract
Mast cells (MCs) are recognized to participate in the regulation of innate and adaptive immune responses. Owing to their strategic location at the host–environment interface, they control tissue homeostasis and are key cells for starting early host defense against intruders. Upon degranulation induced, e.g., by immunoglobulin E (IgE) and allergen-mediated engagement of the high-affinity IgE receptor, complement or certain neuropeptide receptors, MCs release a wide variety of preformed and newly synthesized products including proteases, lipid mediators, and many cytokines, chemokines, and growth factors. Interestingly, increasing evidence suggests a regulatory role for MCs in inflammatory diseases via the regulation of T cell activities. Furthermore, rather than only serving as effector cells, MCs are now recognized to induce T cell activation, recruitment, proliferation, and cytokine secretion in an antigen-dependent manner and to impact on regulatory T cells. This review synthesizes recent developments in MC–T cell interactions, discusses their biological and clinical relevance, and explores recent controversies in this field of MC research.
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Affiliation(s)
- Silvia Bulfone-Paus
- Manchester Collaborative Centre for Inflammation Research (MCCIR), Institute of Inflammation and Repair, University of Manchester , Manchester , UK
| | - Rajia Bahri
- Manchester Collaborative Centre for Inflammation Research (MCCIR), Institute of Inflammation and Repair, University of Manchester , Manchester , UK
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38
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Fang Y, Xiang Z. Roles and relevance of mast cells in infection and vaccination. J Biomed Res 2015; 30:253-63. [PMID: 26565602 PMCID: PMC4946316 DOI: 10.7555/jbr.30.20150038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/08/2015] [Accepted: 04/26/2015] [Indexed: 01/06/2023] Open
Abstract
In addition to their well-established role in allergy mast cells have been described as contributing to functional regulation of both innate and adaptive immune responses in host defense. Mast cells are of hematopoietic origin but typically complete their differentiation in tissues where they express immune regulatory functions by releasing diverse mediators and cytokines. Mast cells are abundant at mucosal tissues which are portals of entry for common infectious agents in addition to allergens. Here, we review the current understanding of the participation of mast cells in defense against infection. We also discuss possibilities of exploiting mast cell activation to provide adequate adjuvant activity that is needed in high-quality vaccination against infectious diseases.
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Affiliation(s)
- Yu Fang
- Department of Microbiology and Immunology; Clinical Research Center, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550025, China
| | - Zou Xiang
- Department of Microbiology and Immunology, Mucosal Immunobiology and Vaccine Research Center, Institute of Biomedicine, University of Gothenburg, Gothenburg 40530, Sweden.
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39
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Jungraithmayr W. The putative role of mast cells in lung transplantation. Am J Transplant 2015; 15:594-600. [PMID: 25693471 DOI: 10.1111/ajt.13126] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 11/04/2014] [Accepted: 11/25/2014] [Indexed: 01/25/2023]
Abstract
Mast cells (MCs) were primarily recognized as effector cells of allergy. These cells are acting predominantly at the interface between the host and the external environment, such as skin, gastrointestinal and the respiratory tract. Only recently, MCs have gained increased recognition as cells of functional plasticity with immune-regulatory properties that influence both the innate and the adaptive immune response in inflammatory disorders, cancer and transplantation. Through the secretion of both proinflammatory and antiinflammatory mediators, MCs can either ameliorate or deteriorate the course and outcome in lung transplantation. Recent research from other models recognized the immune-protective activity of MCs including its role as an important source of IL-10 and TGF-β for the modulation of alloreactive T cell responses or assistance in Treg activity. This paper summarizes the current understanding of MCs in lung transplantation and discusses MC-mediated immune-mechanisms by which the outcome of the engrafted organ is modulated.
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Affiliation(s)
- W Jungraithmayr
- Division of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland
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Sellge G, Barkowsky M, Kramer S, Gebhardt T, Sander LE, Lorentz A, Bischoff SC. Interferon-γ regulates growth and controls Fcγ receptor expression and activation in human intestinal mast cells. BMC Immunol 2014; 15:27. [PMID: 24996251 PMCID: PMC4227132 DOI: 10.1186/1471-2172-15-27] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 06/20/2014] [Indexed: 01/05/2023] Open
Abstract
Background Development and function of tissue resident mast cells (MCs) is tightly controlled by various cytokines, most of which belong to the typical T helper (Th) 2-type cytokines such as IL-3 and IL-4. The effects of the Th1-type cytokine IFN-γ on human MCs is less clear. Results Here, we analyzed the effects of IFN-γ on tissue-derived, mature human MCs. We found that INF-γ decreases proliferation, without affecting apoptosis in human intestinal MCs cultured in the presence of optimal concentrations of stem cell factor (SCF) or SCF and IL-4. However, in the absence of growth factors or at suboptimal concentrations of SCF, INF-γ promotes survival through inhibition of MC apoptosis. Interestingly, we found that INF-γ has no effect on FcϵRI expression and FcϵRI-mediated release of histamine and leukotriene (LT)C4, while it has profound effects on FcγR expression and activation. We show that intestinal MCs express FcγRI, FcγRIIa, and FcγRIIc, whereas FcγRIIb expression was found in only 40% of the isolates and FcγRIII was never detectable. INF-γ strongly increases FcγRI and decreases FcγRIIa expression. INF-γ-naïve MCs produce LTC4 but fail to degranulate upon crosslinking of surface-bound monomeric IgG. In contrast, INF-γ-treated MCs rapidly release granule-stored histamine in addition to de novo-synthesized LTC4. Conclusion In summary, we identify INF-γ as an important regulator of tissue-resident human MCs. IFN-γ displays a dual function by blocking extensive MC proliferation, while decreasing apoptosis in starving MCs and enhancing FcγRI expression and activation. These results emphasize the involvement of mucosal MCs in Th1-mediated disorders.
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Affiliation(s)
- Gernot Sellge
- Department of Internal Medicine III, University Hospital Aachen, RWTH University, Aachen, Germany.
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Mast Cells Kill Candida albicans in the Extracellular Environment but Spare Ingested Fungi from Death. Inflammation 2014; 37:2174-89. [DOI: 10.1007/s10753-014-9951-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Brücher BL, Jamall IS. Epistemology of the origin of cancer: a new paradigm. BMC Cancer 2014; 14:331. [PMID: 24885752 PMCID: PMC4026115 DOI: 10.1186/1471-2407-14-331] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 05/06/2014] [Indexed: 02/06/2023] Open
Abstract
Background Carcinogenesis is widely thought to originate from somatic mutations and an inhibition of growth suppressors, followed by cell proliferation, tissue invasion, and risk of metastasis. Fewer than 10% of all cancers are hereditary; the ratio in gastric (1%), colorectal (3-5%) and breast (8%) cancers is even less. Cancers caused by infection are thought to constitute some 15% of the non-hereditary cancers. Those remaining, 70 to 80%, are called “sporadic,” because they are essentially of unknown etiology. We propose a new paradigm for the origin of the majority of cancers. Presentation of hypothesis Our paradigm postulates that cancer originates following a sequence of events that include (1) a pathogenic stimulus (biological or chemical) followed by (2) chronic inflammation, from which develops (3) fibrosis with associated changes in the cellular microenvironment. From these changes a (4) pre-cancerous niche develops, which triggers the deployment of (5) a chronic stress escape strategy, and when this fails to resolve, (6) a transition of a normal cell to a cancer cell occurs. If we are correct, this paradigm would suggest that the majority of the findings in cancer genetics so far reported are either late events or are epiphenomena that occur after the appearance of the pre-cancerous niche. Testing the hypothesis If, based on experimental and clinical findings presented here, this hypothesis is plausible, then the majority of findings in the genetics of cancer so far reported in the literature are late events or epiphenomena that could have occurred after the development of a PCN. Our model would make clear the need to establish preventive measures long before a cancer becomes clinically apparent. Future research should focus on the intermediate steps of our proposed sequence of events, which will enhance our understanding of the nature of carcinogenesis. Findings on inflammation and fibrosis would be given their warranted importance, with research in anticancer therapies focusing on suppressing the PCN state with very early intervention to detect and quantify any subclinical inflammatory change and to treat all levels of chronic inflammation and prevent fibrotic changes, and so avoid the transition from a normal cell to a cancer cell. Implication of the hypothesis The paradigm proposed here, if proven, spells out a sequence of steps, one or more of which could be interdicted or modulated early in carcinogenesis to prevent or, at a minimum, slow down the progression of many cancers.
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Neunkirchner A, Schmetterer KG, Pickl WF. Lymphocyte-based model systems for allergy research: a historic overview. Int Arch Allergy Immunol 2014; 163:259-91. [PMID: 24777172 DOI: 10.1159/000360163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
During the last decades, a multitude of studies applying distinct in vitro and in vivo model systems have contributed greatly to our better understanding of the initiation and regulation of inflammatory processes leading to allergic diseases. Over the years, it has become evident that among lymphocytes, not only IgE-producing B cells and allergy-orchestrating CD4(+) helper cells but also cytotoxic CD8(+) T cells, γδ-T cells and innate lymphoid cells, as well as regulatory lymphocytes, might critically shape the immune response towards usually innocuous allergens. In this review, we provide a historic overview of pioneering work leading to the establishment of important lymphocyte-based model systems for allergy research. Moreover, we contrast the original findings with our currently more refined knowledge to appreciate the actual validity of the respective models and to reassess the conclusions obtained from them. Conflicting studies and interpretations are identified and discussed. The tables are intended to provide an easy overview of the field not only for scientists newly entering the field but also for the broader readership interested in updating their knowledge. Along those lines, herein we discuss in vitro and in vivo approaches to the investigation of lymphocyte effector cell activation, polarization and regulation, and describe depletion and adoptive transfer models along with gene knockout and transgenic (tg) methodologies. In addition, novel attempts to establish humanized T cell antigen receptor tg mouse models for allergy research are described and discussed.
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Affiliation(s)
- Alina Neunkirchner
- Christian Doppler Laboratory for Immunomodulation, Medical University of Vienna, Vienna, Austria
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Mast cells as a potential prognostic marker in prostate cancer. DISEASE MARKERS 2013; 35:711-20. [PMID: 24324287 PMCID: PMC3844173 DOI: 10.1155/2013/478303] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Accepted: 10/07/2013] [Indexed: 12/21/2022]
Abstract
Despite years of intensive investigation that has been made in understanding prostate cancer, it remains one of the major men's health issues and the leading cause of death worldwide. It is now ascertained that prostate cancer emerges from multiple spontaneous and/or inherited alterations that induce changes in expression patterns of genes and proteins that function in complex networks controlling critical cellular events. It is now accepted that several innate and adaptive immune cells, including T- and B-lymphocytes, macrophages, natural killer cells, dendritic cells, neutrophils, eosinophils, and mast cells (MCs), infiltrate the prostate cancer. All of these cells are irregularly scattered within the tumor and loaded with an assorted array of cytokines, chemokines, and inflammatory and cytotoxic mediators. This complex framework reflects the diversity in tumor biology and tumor-host interactions. MCs are well-established effector cells in Immunoglobulin-E (Ig-E) associated immune responses and potent effector cells of the innate immune system; however, their clinical significance in prostate cancer is still debated. Here, these controversies are summarized, focusing on the implications of these findings in understanding the roles of MCs in primary prostate cancer.
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Innate immune cells in asthma. Trends Immunol 2013; 34:540-7. [PMID: 24035576 DOI: 10.1016/j.it.2013.08.004] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/12/2013] [Accepted: 08/13/2013] [Indexed: 12/17/2022]
Abstract
Asthma is an inflammatory disease of the airways associated with a T helper (Th)2 response. Such a response in the lungs requires complex interactions between innate cells and structural cells. Dendritic cells (DCs) are pivotal during sensitization to allergens but clearly require epithelium-derived signals to become activated. Epithelial cells also contribute to the activation and the survival of mast cells (MCs), basophils, and eosinophils and group 2 innate lymphoid cells (ILC2s). In turn, these innate cells can activate DCs to sustain Th2 immunity. Here, we review the role played by these different populations of immune cells in the pathogenesis of asthma and how they interact to orchestrate Th2 immunity.
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