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Miao Y, Liu J, Liu X, Yuan Q, Li H, Zhang Y, Zhan Y, Feng X. Machine learning identification of cuproptosis and necroptosis-associated molecular subtypes to aid in prognosis assessment and immunotherapy response prediction in low-grade glioma. Front Genet 2022; 13:951239. [PMID: 36186436 PMCID: PMC9524234 DOI: 10.3389/fgene.2022.951239] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/15/2022] [Indexed: 11/29/2022] Open
Abstract
Both cuproptosis and necroptosis are typical cell death processes that serve essential regulatory roles in the onset and progression of malignancies, including low-grade glioma (LGG). Nonetheless, there remains a paucity of research on cuproptosis and necroptosis-related gene (CNRG) prognostic signature in patients with LGG. We acquired patient data from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) and captured CNRGs from the well-recognized literature. Firstly, we comprehensively summarized the pan-cancer landscape of CNRGs from the perspective of expression traits, prognostic values, mutation profiles, and pathway regulation. Then, we devised a technique for predicting the clinical efficacy of immunotherapy for LGG patients. Non-negative matrix factorization (NMF) defined by CNRGs with prognostic values was performed to generate molecular subtypes (i.e., C1 and C2). C1 subtype is characterized by poor prognosis in terms of disease-specific survival (DSS), progression-free survival (PFS), and overall survival (OS), more patients with G3 and tumour recurrence, high abundance of immunocyte infiltration, high expression of immune checkpoints, and poor response to immunotherapy. LASSO-SVM-random Forest analysis was performed to aid in developing a novel and robust CNRG-based prognostic signature. LGG patients in the TCGA and GEO databases were categorized into the training and test cohorts, respectively. A five-gene signature, including SQSTM1, ZBP1, PLK1, CFLAR, and FADD, for predicting OS of LGG patients was constructed and its predictive reliability was confirmed in both training and test cohorts. In both the training and the test datasets (cohorts), higher risk scores were linked to a lower OS rate. The time-dependent ROC curve proved that the risk score had outstanding prediction efficiency for LGG patients in the training and test cohorts. Univariate and multivariate Cox regression analyses showed the CNRG-based prognostic signature independently functioned as a risk factor for OS in LGG patients. Furthermore, we developed a highly reliable nomogram to facilitate the clinical practice of the CNRG-based prognostic signature (AUC > 0.9). Collectively, our results gave a promising understanding of cuproptosis and necroptosis in LGG, as well as a tailored prediction tool for prognosis and immunotherapeutic responses in patients.
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Affiliation(s)
- Ye Miao
- Department of Neurosurgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Jifeng Liu
- Department of Surgery, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Xishu Liu
- Department of Neurosurgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Qihang Yuan
- Department of Surgery, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Hanshuo Li
- Department of Surgery, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Yunshu Zhang
- Department of Surgery, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Yibo Zhan
- Department of Thoracic Surgery, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Xiaoshi Feng
- Department of Endocrinology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
- *Correspondence: Xiaoshi Feng,
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Zhao J, Guo S, Schrodi SJ, He D. Molecular and Cellular Heterogeneity in Rheumatoid Arthritis: Mechanisms and Clinical Implications. Front Immunol 2021; 12:790122. [PMID: 34899757 PMCID: PMC8660630 DOI: 10.3389/fimmu.2021.790122] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/08/2021] [Indexed: 12/20/2022] Open
Abstract
Rheumatoid arthritis is an autoimmune disease that exhibits significant clinical heterogeneity. There are various treatments for rheumatoid arthritis, including disease-modifying anti-rheumatic drugs (DMARDs), glucocorticoids, non-steroidal anti-inflammatory drugs (NSAIDs), and inflammatory cytokine inhibitors (ICI), typically associated with differentiated clinical effects and characteristics. Personalized responsiveness is observed to the standard treatment due to the pathophysiological heterogeneity in rheumatoid arthritis, resulting in an overall poor prognosis. Understanding the role of individual variation in cellular and molecular mechanisms related to rheumatoid arthritis will considerably improve clinical care and patient outcomes. In this review, we discuss the source of pathophysiological heterogeneity derived from genetic, molecular, and cellular heterogeneity and their possible impact on precision medicine and personalized treatment of rheumatoid arthritis. We provide emphasized description of the heterogeneity derived from mast cells, monocyte cell, macrophage fibroblast-like synoviocytes and, interactions within immune cells and with inflammatory cytokines, as well as the potential as a new therapeutic target to develop a novel treatment approach. Finally, we summarize the latest clinical trials of treatment options for rheumatoid arthritis and provide a suggestive framework for implementing preclinical and clinical experimental results into clinical practice.
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Affiliation(s)
- Jianan Zhao
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shicheng Guo
- Computation and Informatics in Biology and Medicine, University of Wisconsin-Madison, Madison, WI, United States
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Steven J. Schrodi
- Computation and Informatics in Biology and Medicine, University of Wisconsin-Madison, Madison, WI, United States
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Dongyi He
- Guanghua Clinical Medical College, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Department of Rheumatology, Shanghai Guanghua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Arthritis Institute of Integrated Traditional and Western Medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China
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Myeloid Dendritic Cells Are Enriched in Lymph Node Tissue of Early Rheumatoid Arthritis Patients but not in At Risk Individuals. Cells 2019; 8:cells8070756. [PMID: 31330824 PMCID: PMC6679555 DOI: 10.3390/cells8070756] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/12/2019] [Accepted: 07/18/2019] [Indexed: 12/26/2022] Open
Abstract
Lymph nodes (LNs) are highly organized structures where specific immune responses are initiated by dendritic cells (DCs). We investigated the frequency and distribution of human myeloid (mDCs) and plasmacytoid (pDCs) in LNs and blood during the earliest phases of rheumatoid arthritis (RA). We included 22 RA-risk individuals positive for IgM rheumatoid factor and/or anti-citrullinated protein antibodies, 16 biological-naïve RA patients and 8 healthy controls (HCs). DC subsets (CD1c+ mDCs and CD304+ pDCs) in LN tissue and paired peripheral blood were analyzed using flow cytometry and confocal microscopy. In blood of RA patients a significant decreased frequency of pDCs was found, with a similar trend for mDCs. In contrast, mDC frequencies were higher in RA compared with HCs and RA-risk individuals, especially in LN. Frequency of mDCs seemed higher in LNs compared to paired blood samples in all donors, while pDCs were higher in LNs only in RA patients. As expected, both mDCs and pDCs localized mainly in T-cell areas of LN tissue. In conclusion, compared with RA-risk individuals, mDCs and pDCs were enriched in the LN tissue of early-RA patients, while their frequency in RA-risk individuals was comparable to HCs. This may suggest that other antigen-presenting cells are responsible for initial breaks of tolerance, while mDCs and pDCs are involved in sustaining inflammation.
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Rana AK, Li Y, Dang Q, Yang F. Monocytes in rheumatoid arthritis: Circulating precursors of macrophages and osteoclasts and, their heterogeneity and plasticity role in RA pathogenesis. Int Immunopharmacol 2018; 65:348-359. [PMID: 30366278 DOI: 10.1016/j.intimp.2018.10.016] [Citation(s) in RCA: 169] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 09/24/2018] [Accepted: 10/10/2018] [Indexed: 12/31/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic systemic, autoimmune and inflammatory disease represented as synovitis, pannus formation, adjacent bone erosions, and joint destruction. The major cells involved in the perpetuation of RA pathogenesis are CD4+ T-cells (mainly Th1 cells and Th17 cells), fibroblasts like synoviocytes (FLS), macrophages and B cells. Other autoimmune cells such as dendritic cells, neutrophils, mast cells, and monocytes also contribute to RA pathogenesis. Monocytes are mainly bone marrow (BM) derived cells in the circulation. The chemokine receptors CCR2 and CX3CR1 expressed by monocytes interact with chemokine ligands CCL2 (MCP-1) and CX3CL1 (fractalkine) respectively produced by FLS and this interaction promotes their migration and recruitment into RA synovium. Activated monocytes on their surface exhibit upregulated antigenic expressions such as CD14, CD16, HLA-DR, toll-like receptors (TLRs), and adhesion molecules B1 and B2 integrins. RA monocytes interconnect with other cells in a positive loop manner in the propagation of the rheumatoid process. They skew towards mainly intermediate monocyte subsets (CD14++ CD16+) which produce proinflammatory cytokines such as TNF-α, IL-1β, and IL-6. Moreover, the predominant intermediate monocytes in RA differentiate into M1-macrophages which play a major role in synovial inflammation. Demonstrations suggest monocytes with CD14+ and CD16- expression (classical monocytes?) differentiate to osteoclasts which are the cells responsible for bone erosion in RA synovial joints. Th17 cells induce the production of RANKL by FLS which promotes osteoclastogenesis. Cytokines mainly TNF-α, IL-1β, and IL-6 amplify osteoclastogenesis. Hence, monocytes are the circulating precursors of macrophages and osteoclasts in RA. AIM OF THE REVIEW: To enlighten the identity of monocytes, the antigenic expression on monocyte surface and their cytokines role in RA. We also emphasize about the chemokine receptors expressed by monocytes subsets and chemotaxis of circulating monocytes into RA synovium. Additionally, we review monocytes as the circulating precursors of macrophages and osteoclasts in RA joints and their heterogeneity and plasticity role in RA.
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Affiliation(s)
- Amit Kumar Rana
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Yang Li
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China.
| | - Qiujie Dang
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Fan Yang
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
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Nehmar R, Mariotte A, de Cauwer A, Sibilia J, Bahram S, Georgel P. Therapeutic Perspectives for Interferons and Plasmacytoid Dendritic Cells in Rheumatoid Arthritis. Trends Mol Med 2018. [DOI: 10.1016/j.molmed.2018.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Li R, Zhang Y, Zheng X, Peng S, Yuan K, Zhang X, Min W. Synergistic suppression of autoimmune arthritis through concurrent treatment with tolerogenic DC and MSC. Sci Rep 2017; 7:43188. [PMID: 28230210 PMCID: PMC5322386 DOI: 10.1038/srep43188] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 01/20/2017] [Indexed: 01/09/2023] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease characterized by progressive immune-mediated joint deterioration. Current treatments are not antigen specific and are associated with various adverse. We have previously demonstrated that tolerogenic dendritic cells (Tol-DC) are potent antigen-specific immune regulators, which hold great promise in immunotherapy of autoimmune diseases. In this study, we aimed to develop new immunotherapy by combining Tol-DC and mesenchymal stem cells (MSC). We demonstrated that RelB gene silencing resulted in generation of Tol-DC that suppressed T cell responses and selectively promoted Treg generation. The combination of MSC synergized the tolerogenic capacity of Tol-DC in inhibition of T cell responses. In murine collagen-induced arthritis (CIA) model, we demonstrated that progression of arthritis was inhibited with administration of RelB gene-silenced Tol-DC or MSC. This therapeutic effect was remarkably enhanced with concurrent treatment of combination Tol-DC and MSC as demonstrated by improved clinical symptoms, decreased clinical scores and attenuated joint damage. These therapeutic effects were associated with suppression of CII-specific T cell responses, polarization of Th and inhibition of proinflammatory cytokines, and reduced cartilage degeneration. This study for the first time demonstrates a new approach to treat autoimmune inflammatory joint disease with concurrent treatment of RelB gene-silenced Tol-DC and MSC.
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Affiliation(s)
- Rong Li
- College of Basic Medical Sciences and Institute of Immunotherapy of Nanchang University, and Jiangxi Academy of Medical Sciences, Nanchang, China.,Jiangxi Provincial Key Laboratory of Immunotherapy, Nanchang, China
| | - Yujuan Zhang
- College of Basic Medical Sciences and Institute of Immunotherapy of Nanchang University, and Jiangxi Academy of Medical Sciences, Nanchang, China.,Jiangxi Provincial Key Laboratory of Immunotherapy, Nanchang, China
| | - Xiufen Zheng
- Departments of Surgery, Pathology, and Oncology, University of Western Ontario, London, Canada
| | - Shanshan Peng
- College of Basic Medical Sciences and Institute of Immunotherapy of Nanchang University, and Jiangxi Academy of Medical Sciences, Nanchang, China.,Jiangxi Provincial Key Laboratory of Immunotherapy, Nanchang, China
| | - Keng Yuan
- College of Basic Medical Sciences and Institute of Immunotherapy of Nanchang University, and Jiangxi Academy of Medical Sciences, Nanchang, China.,Jiangxi Provincial Key Laboratory of Immunotherapy, Nanchang, China
| | - Xusheng Zhang
- Departments of Surgery, Pathology, and Oncology, University of Western Ontario, London, Canada
| | - Weiping Min
- College of Basic Medical Sciences and Institute of Immunotherapy of Nanchang University, and Jiangxi Academy of Medical Sciences, Nanchang, China.,Jiangxi Provincial Key Laboratory of Immunotherapy, Nanchang, China.,Departments of Surgery, Pathology, and Oncology, University of Western Ontario, London, Canada
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Sennikov SV, Falaleeva SA, Shkaruba NS, Chumasova OA, Obleukhova IA, Sizikov AE, Kurilin VV. Maturation and cytokine production potential of dendritic cells isolated from rheumatoid arthritis patients peripheral blood and induced in vitro. Hum Immunol 2016; 77:930-936. [PMID: 27421624 DOI: 10.1016/j.humimm.2016.07.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 07/04/2016] [Accepted: 07/11/2016] [Indexed: 12/24/2022]
Abstract
BACKGROUND Since dendritic cells (DC) are involved in the development of autoimmune inflammation, researchers consider DC both as target cells for specific therapy of rheumatoid arthritis (RA) and as candidate cells for the development of cell-based methods to treat autoimmune diseases. The development of treatment strategies requires comprehensive research into the quantitative and qualitative characteristics of DC subtypes both ex vivo from RA patients and in vitro, to determine the possibility of inducing functionally mature DC in RA. OBJECTIVE To study the phenotypic and functional properties of myeloid (mDC) and plasmacytoid (pDC) DC isolated from the peripheral blood of patients with RA and induced in vitro. MATERIALS AND METHODS Blood samples were obtained from RA patients and healthy donors. Immature DC in the whole blood and in vitro induced DC were characterized by the positive expression of CD80, CD83, CCR7, IL-10, IL-4, IL-12 and IFN-α. R848 and lipopolysaccharide were used to determine DC maturation ability. From PBMCs of RA patients and health donors DCs with myeloid (imDC) and plasmacytoid (ipDC) phenotype were induced. RESULTS The relative count of mDC in the peripheral blood between studied groups did not differ. pDC count was significantly lower for RA patients. DC from RA patients were characterized by low expression levels of CD80 and CD83 on both populations cells and high expression of CCR7 only on pDC. An increase in pDC producing IL-12 and IFN-α and a decrease in mDC and pDC producing IL-4 and IL-10 were shown in RA. imDC and ipDC obtained from RA patients according to their phenotype and cytokine profile did not differ from those obtained from healthy donors. CONCLUSIONS There is an imbalance between subpopulations of DC in the peripheral blood of RA patients. DC of RA patients are less mature. The data suggest the involvement of DC in RA pathogenesis and confirm DC participation in balance shift towards Th1-type immune responses. At the same time, in vitro induced RA DC are phenotypically and functionally competent.
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Affiliation(s)
- Sergey V Sennikov
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology" RIFCI, 14, Yadrincevskaya Str., Novosibirsk 630099, Russia.
| | - Svetlana A Falaleeva
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology" RIFCI, 14, Yadrincevskaya Str., Novosibirsk 630099, Russia.
| | - Nadezhda S Shkaruba
- Rheumatology Department, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology" RIFCI, 14, Yadrincevskaya Str., Novosibirsk 630099, Russia.
| | - Oksana A Chumasova
- Rheumatology Department, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology" RIFCI, 14, Yadrincevskaya Str., Novosibirsk 630099, Russia.
| | - Irina A Obleukhova
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology" RIFCI, 14, Yadrincevskaya Str., Novosibirsk 630099, Russia.
| | - Aleksey E Sizikov
- Rheumatology Department, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology" RIFCI, 14, Yadrincevskaya Str., Novosibirsk 630099, Russia.
| | - Vasily V Kurilin
- Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology" RIFCI, 14, Yadrincevskaya Str., Novosibirsk 630099, Russia.
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Shen C, Hupin C, Froidure A, Detry B, Pilette C. Impaired ICOSL in human myeloid dendritic cells promotes Th2 responses in patients with allergic rhinitis and asthma. Clin Exp Allergy 2015; 44:831-41. [PMID: 24661627 DOI: 10.1111/cea.12308] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 02/25/2014] [Accepted: 02/27/2014] [Indexed: 01/17/2023]
Abstract
BACKGROUND Myeloid dendritic cells (mDCs) and costimulatory molecules such as ICOSL/B7H2 play a pivotal role in murine experimental asthma, while little is known in human allergic disease. The aim of this study was to characterize the phenotype and ICOSL expression of mDCs from allergic rhinitis patients (AR) and their functional correlates on mDC regulation of T cell responses. METHODS Human blood myeloid, CD1c(+) DCs were isolated from AR or healthy controls. Expression of costimulatory molecules inducible costimulatory ligand (ICOSL) and programmed death ligand 1 (PD-L1) was analysed in blood mDCs by flow cytometry and in nasal tissue biopsies by dual immunostaining. Blood mDCs were cocultured with (allogeneic) CD4(+) T cells before immunoassays for cytokine responses. RESULTS mDCs from AR patients expressed a lower level of ICOSL, in both blood and nasal tissue. mDCs from AR were constitutively primed to induce Th2 cytokines and TNF in allogeneic CD4(+) T cells, while no difference was observed for IFN-γ or IL-10. Production of IL-10 and IL-12 did not differ between AR and control mDCs. Blockade of ICOSL in control DCs up-regulated IL-13 but not IFN-γ in cocultures with T cells, while PD-L1 blockade up-regulated both IL-13 and IFN-γ. CONCLUSIONS Our data show that mDCs from patients with AR display impaired expression of ICOSL, and this defect licenses mDCs to promote aberrant IL-13- and IL-5-producing Th2 cell responses.
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Affiliation(s)
- C Shen
- Pôle Pneumologie, ORL & Dermatologie, Institut de Recherche Expérimentale & Clinique (IREC), Université Catholique de Louvain (UCL), Brussels, Belgium; Institute for Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Cliniques Universitaires St-Luc, Brussels, Belgium
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Byrne WL, Murphy CT, Cronin M, Wirth T, Tangney M. Bacterial-mediated DNA delivery to tumour associated phagocytic cells. J Control Release 2014; 196:384-93. [PMID: 25466954 DOI: 10.1016/j.jconrel.2014.10.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 10/23/2014] [Accepted: 10/29/2014] [Indexed: 12/29/2022]
Abstract
Phagocytic cells including macrophages, dendritic cells and neutrophils are now recognised as playing a negative role in many disease settings including cancer. In particular, macrophages are known to play a pathophysiological role in multiple diseases and present a valid and ubiquitous therapeutic target. The technology to target these phagocytic cells in situ, both selectively and efficiently, is required in order to translate novel therapeutic modalities into clinical reality. We present a novel delivery strategy using non-pathogenic bacteria to effect gene delivery specifically to tumour-associated phagocytic cells. Non-invasive bacteria lack the ability to actively enter host cells, except for phagocytic cells. We exploit this natural property to effect 'passive transfection' of tumour-associated phagocytic cells following direct administration of transgene-loaded bacteria to tumour regions. Using an in vitro-differentiated human monocyte cell line and two in vivo mouse models (an ovarian cancer ascites and a solid colon tumour model) proof of delivery is demonstrated with bacteria carrying reporter constructs. The results confirm that the delivery strategy is specific for phagocytic cells and that the bacterial vector itself recruits more phagocytic cells to the tumour. While proof of delivery to phagocytic cells is demonstrated in vivo for solid and ascites tumour models, this strategy may be applied to other settings, including non-cancer related disease.
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Affiliation(s)
- W L Byrne
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - C T Murphy
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - M Cronin
- Cork Cancer Research Centre, University College Cork, Cork, Ireland
| | - T Wirth
- Aurealis Pharma, Microkatu 1, FI-70211 Kuopio, Finland
| | - M Tangney
- Cork Cancer Research Centre, University College Cork, Cork, Ireland.
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Immunosuppressive mechanisms of regulatory dendritic cells in cancer. CANCER MICROENVIRONMENT 2013; 6:159-67. [PMID: 23749739 DOI: 10.1007/s12307-013-0133-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 05/07/2013] [Indexed: 12/20/2022]
Abstract
Three major functional subsets of dendritic cells (DCs) have been described in the tumor microenvironment in patients with cancer and tumor-bearing animals: (i) conventional DCs with intact antigen-presenting capabilities, (ii) functionally defective DCs with decreased motility and low ability to uptake, process and present antigens or produce cytokines and (iii) regulatory DCs with high capacity to suppress T cell proliferation, induce differentiation of regulatory T cells or support immune tolerance. Phenotypic characteristics of regulatory DCs (regDCs), as well as the mechanisms of T cell inhibition, vary in different experimental conditions and environments, suggesting high level of their plasticity and probably different origin. Although new data demonstrate that regDCs may play an important role at early stages of tumor development, functional differences and clinical significance of emergence of different myeloid regulatory cells (MDSCs, regDCs, M2 macrophages, N2 neutrophils, mast cells) in cancer remain to be determined.
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11
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Intestinal dendritic cells: their role in intestinal inflammation, manipulation by the gut microbiota and differences between mice and men. Immunol Lett 2013; 150:30-40. [PMID: 23352670 DOI: 10.1016/j.imlet.2013.01.007] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 01/08/2013] [Accepted: 01/08/2013] [Indexed: 02/06/2023]
Abstract
The intestinal immune system maintains a delicate balance between immunogenicity against invading pathogens and tolerance of the commensal microbiota and food antigens. Dendritic cells (DC) generate primary T-cell responses, and determine whether these responses are immunogenic or tolerogenic. The regulatory role of DC is of particular importance in the gut due to the high antigenic load. Intestinal DC act as sentinels, sampling potentially pathogenic antigens but also harmless antigens including the commensal microbiota. Following antigen acquisition, intestinal DC migrate to secondary lymphoid organs to activate naive T-cells. DC also imprint specific homing properties on T-cells that they stimulate; gut DC specifically induce gut-homing properties on T-cells upon activation, enabling T-cell migration back to intestinal sites. Data regarding properties on gut DC in humans is scarce, although evidence now supports the role of DC as important players in intestinal immunity in humans. Here, we review the role of intestinal DC in shaping mucosal immune responses and directing tissue-specific T-cell responses, with a special focus on the importance of distinguishing DC subsets from macrophages at intestinal sites. We compare and contrast human DC with their murine counterparts, and discuss the ability of the gut microbiota to shape intestinal DC function, and how this may be dysregulated in inflammatory bowel disease (IBD). Lastly, we describe recent advances in the study of probiotics on intestinal DC function, including the use of soluble secreted bacterial products.
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Svensson MND, Andersson SEM, Erlandsson MC, Jonsson IM, Ekwall AKH, Andersson KME, Nilsson A, Bian L, Brisslert M, Bokarewa MI. Fms-like tyrosine kinase 3 ligand controls formation of regulatory T cells in autoimmune arthritis. PLoS One 2013; 8:e54884. [PMID: 23349985 PMCID: PMC3549988 DOI: 10.1371/journal.pone.0054884] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 12/17/2012] [Indexed: 12/01/2022] Open
Abstract
Fms-like tyrosine kinase 3 ligand (Flt3L) is known as the primary differentiation and survival factor for dendritic cells (DCs). Furthermore, Flt3L is involved in the homeostatic feedback loop between DCs and regulatory T cell (Treg). We have previously shown that Flt3L accumulates in the synovial fluid in rheumatoid arthritis (RA) and that local exposure to Flt3L aggravates arthritis in mice, suggesting a possible involvement in RA pathogenesis. In the present study we investigated the role of Flt3L on DC populations, Tregs as well as inflammatory responses in experimental antigen-induced arthritis. Arthritis was induced in mBSA-immunized mice by local knee injection of mBSA and Flt3L was provided by daily intraperitoneal injections. Flow cytometry analysis of spleen and lymph nodes revealed an increased formation of DCs and subsequently Tregs in mice treated with Flt3L. Flt3L-treatment was also associated with a reduced production of mBSA specific antibodies and reduced levels of the pro-inflammatory cytokines IL-6 and TNF-α. Morphological evaluation of mBSA injected joints revealed reduced joint destruction in Flt3L treated mice. The role of DCs in mBSA arthritis was further challenged in an adoptive transfer experiment. Transfer of DCs in combination with T-cells from mBSA immunized mice, predisposed naïve recipients for arthritis and production of mBSA specific antibodies. We provide experimental evidence that Flt3L has potent immunoregulatory properties. Flt3L facilitates formation of Treg cells and by this mechanism reduces severity of antigen-induced arthritis in mice. We suggest that high systemic levels of Flt3L have potential to modulate autoreactivity and autoimmunity.
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Affiliation(s)
- Mattias N D Svensson
- Department of Rheumatology and Inflammation Research at Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.
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Amodio G, Gregori S. Dendritic cells a double-edge sword in autoimmune responses. Front Immunol 2012; 3:233. [PMID: 22876246 PMCID: PMC3410601 DOI: 10.3389/fimmu.2012.00233] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Accepted: 07/15/2012] [Indexed: 01/21/2023] Open
Abstract
Dendritic cells (DC) are antigen-presenting cells that play a pivotal role in regulating innate and adaptive immune responses. In autoimmunity, DC act as a double-edged sword since on one hand they initiate adaptive self-reactive responses and on the other they play a pivotal role in promoting and maintaining tolerance. Thus, DC are the most important cells in either triggering self-specific responses or in negatively regulating auto-reactive responses. The latter function is mediated by DC in the steady-state or specialized subsets of DC, named tolerogenic DC. Clinical and experimental evidence indicate that prolonged presentation of self-antigens by DC is crucial for the development of destructive autoimmune diseases, and defects in tolerogenic DC functions contribute to eradication of self-tolerance. In recent years, DC have emerged as therapeutic targets for limiting their immunogenicity against self-antigens, while tolerogenic DC have been conceived as therapeutic tools to restore tolerance. The purpose of this review is to give a general overview of the current knowledge on the pathogenic role of DC in patients affected by autoimmune diseases. In addition, the protective role of tolerogenic DC will be addressed. The currently applied strategies to block immune activation or to exploit the tolerogenic potential of DC will be discussed.
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Affiliation(s)
- Giada Amodio
- San Raffaele Telethon Institute for Gene Therapy (OSR-TIGET), Division of Regenerative Medicine, Stem Cells and Gene Therapy, San Raffaele Scientific Institute, Milan, Italy
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Bosco MC, Varesio L. Dendritic cell reprogramming by the hypoxic environment. Immunobiology 2012; 217:1241-9. [PMID: 22901977 DOI: 10.1016/j.imbio.2012.07.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 07/06/2012] [Accepted: 07/19/2012] [Indexed: 12/17/2022]
Abstract
Myeloid dendritic cells (DCs) are professional antigen-presenting cells central to the orchestration of innate and acquired immunity and the maintenance of self-tolerance. The local microenvironment contributes to the regulation of DC development and functions, and deregulated DC responses may result in amplification of inflammation, loss of tolerance, or establishment of immune escape mechanisms. DC generation from monocytic precursors recruited at sites of inflammation, tissue damage, or neoplasia occurs under condition of low partial oxygen pressure (pO(2), hypoxia). We reviewed the literature addressing the phenotypic and functional changes triggered by hypoxia in monocyte-derived immature (i) and mature (m) DCs. The discussion will revolve around in vitro studies of gene expression profile, which give a comprehensive representation of the complexity of response of these cells to low pO(2). The gene expression pattern of hypoxic DC will be discussed to address the question of the relationship with a specific maturation stage. We will summarize data relative to the regulation of the chemotactic network, which points to a role for hypoxia in promoting a migratory phenotype in iDCs and a highly proinflammatory state in mDCs. Current knowledge of the strict regulatory control exerted by hypoxia on the expression of immune-related cell surface receptors will also be addressed, with a particular focus on a newly identified marker of hypoxic DCs endowed with proinflammatory properties. Furthermore, we discuss the literature on the transcription mechanisms underlying hypoxia-regulated gene expression in DCs, which support a major role for the HIF/HRE pathway. Finally, recent advances shedding light on the in vivo influence of the local hypoxic microenvironment on DCs infiltrating the inflamed joints of juvenile idiopathic arthritis patients are outlined.
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Affiliation(s)
- Maria Carla Bosco
- Laboratory of Molecular Biology, G. Gaslini Institute, Genova, Italy.
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Mann ER, Bernardo D, Al-Hassi HO, English NR, Clark SK, McCarthy NE, Milestone AN, Cochrane SA, Hart AL, Stagg AJ, Knight SC. Human gut-specific homeostatic dendritic cells are generated from blood precursors by the gut microenvironment. Inflamm Bowel Dis 2012; 18:1275-86. [PMID: 21987473 DOI: 10.1002/ibd.21893] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 08/18/2011] [Indexed: 12/17/2022]
Abstract
BACKGROUND Dendritic cells (DC) dictate not only the type of T-cell immunity, but also homing patterns of T cells in mice. In humans, we characterized normal human gut DC and tested whether gut-specific homeostatic DC could be generated from blood precursors by factors in the gut microenvironment. METHODS We characterized the phenotype and function of healthy human gut DC compared with blood and skin DC, and studied whether conditioning of blood DC in the presence of colonic biopsy supernatants (Bx-SN) induced gut-like phenotype and functions. RESULTS Blood DC mostly expressed both gut and skin homing markers, indicating potential to migrate to both major immune surface organs, and induced multi-homing T cells. However, DC within gut or skin did not demonstrate this multi-homing phenotype, were tissue-specific, and induced tissue-specific T cells. Human gut DC were less stimulatory for allogeneic T cells than their dermal and blood counterparts. Human blood DC cultured in vitro lost homing marker expression. Conditioning of human enriched blood DC with colonic Bx-SN from healthy controls induced a gut-homing phenotype and a homeostatic profile. Moreover, Bx-SN-conditioned DC demonstrated a restricted T-cell stimulatory capacity and preferentially induced gut-specific T cells. Retinoic acid and transforming growth factor beta (TGF-β) mediated the acquisition of the gut-homing and homeostatic properties, respectively, induced by colonic Bx-SN on blood enriched DC. CONCLUSIONS Tissue-specific factors manipulate immunity via modulating characteristics of DC and may provide tools to generate tissue-specific immunotherapy.
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Affiliation(s)
- Elizabeth R Mann
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, UK
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Blengio F, Raggi F, Pierobon D, Cappello P, Eva A, Giovarelli M, Varesio L, Bosco MC. The hypoxic environment reprograms the cytokine/chemokine expression profile of human mature dendritic cells. Immunobiology 2012; 218:76-89. [PMID: 22465745 DOI: 10.1016/j.imbio.2012.02.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 01/31/2012] [Accepted: 02/04/2012] [Indexed: 12/31/2022]
Abstract
Myeloid dendritic cells (DCs) are professional antigen-presenting cells critical for the orchestration of immunity and maintenance of self-tolerance. DC development and functions are tightly regulated by a complex network of inhibitory and activating signals present in the tissue microenvironment, and dysregulated DC responses may result in amplification of inflammation, loss of tolerance, or establishment of immune escape mechanisms. Generation of mature (m)DCs from monocytic precursors recruited at pathological sites occurs under condition of low partial oxygen pressure (pO(2)). However, the way in which the hypoxic microenvironment modulates the functions of these cells is still not clear. We demonstrate that chronic hypoxia (4 days, 1% O(2)) promotes the onset of a highly proinflammatory gene expression profile in mDCs generated from primary human monocytes, characterized by the modulation of a significant cluster of genes coding for proinflammatory chemokines/cytokines and/or their receptors. Within the chemokine system, strong upregulation of genes encoding proteins chemotactic for neutrophils, such as CXCL2, CXCL3, CXCL5, CXCL6, and CXCL8, and for activated/memory T lymphocytes, monocytes, and immature (i) DCs, e.g. CCL20, CCL3 and CCL5, was observed, concomitant with decreased expression of genes coding for naive/resting T cells chemoattractants, CCL18 and CCL23. Other hypoxia-inducible genes coded for cytokines with a primary role in inflammation and angiogenesis, including osteopontin, vascular endothelial growth factor, and IL-1β. mRNA modulation was paralleled by protein secretion. These results suggest that conditions of reduced O(2) availability reprograms mDCs toward a proinflammatory direction by tuning the cytokine/chemokine repertoire, thus affecting their ability to regulate leukocyte trafficking and activation at pathological sites, with potential implications for the pathogenesis of chronic inflammatory diseases.
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Affiliation(s)
- Fabiola Blengio
- Laboratory of Molecular Biology, G. Gaslini Institute, Genova, Italy
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Luo X, Li LL, Zhang SS, Lu JL, Zeng Y, Zhang HY, Xiang M. Therapeutic effects of total coumarins from Urtica dentata Hand on collagen-induced arthritis in Balb/c mice. JOURNAL OF ETHNOPHARMACOLOGY 2011; 138:523-9. [PMID: 22001857 DOI: 10.1016/j.jep.2011.09.050] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2011] [Revised: 09/14/2011] [Accepted: 09/14/2011] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Urtica dentata Hand (UDH), the root of Laportea bulbifera (Sieb. et. Zucc.) Wedd, has long been utilized in traditional Chinese medicine for the treatment of rheumatoid arthritis and some other autoimmune diseases. Coumarins are the main active principles contributing to UDH's efficacy, but the mechanisms have not been fully clarified. AIM OF STUDY To explore effects of total coumarins (TC) isolated from UDH on the development of type II collagen (CII)-induced arthritis (CIA) in Balb/c mice. MATERIALS AND METHODS Arthritis was induced in Balb/c mice by immunization with an emulsion of 200mg CII and complete Freund's adjuvant (CFA). The CIA mice were then given with a suspension of TC or saline by intragastric (i.g.) administration every other day. The incidence and severity of disease and histopathology of inflammation were assessed. Inflammatory response was determined by measuring the levels of different inflammation mediators in serum. The effect of TC on differentiation of CD4(+)CD25(+) Foxp3(+)Treg cells was examined by flow cytometry. The phenotype of bone marrow-derived dendritic cells (DCs), T-bet mRNA level and IL-12p70 secretion by DCs were also detected. RESULTS Pharmacologically, treatment with TC for type II collagen induced arthritis in mice through oral administration displayed significant and dose-dependent drop of clinical arthritis score and paw swelling, compared with the untreated CIA mice. Pathologic changes showed that TC protected tissues against bone destruction, whereas an almost complete destruction occurred in the CIA model group. The protective status was associated with a substantial decrease in the production of IFN-γ and IL-2, an increase of IL-10 and TGF-β and suppressive expression of T-bet in DCs. TC also induced the generation of CD4(+)CD25(+) Treg cells with a Treg phenotype Foxp3. TC-treated DCs were characterized as low expression of MHC class II and CD86 molecules, as well as a reduction of IL-12p70. CONCLUSIONS Our data suggest that TC provides substantial therapeutic protection against CIA by eliciting immune tolerance and it would be a valuable candidate for further investigation as a new anti-arthritic agent.
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Affiliation(s)
- Xiang Luo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resources Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Takakubo Y, Konttinen YT. Immune-regulatory mechanisms in systemic autoimmune and rheumatic diseases. Clin Dev Immunol 2011; 2012:941346. [PMID: 22110541 PMCID: PMC3207139 DOI: 10.1155/2012/941346] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 08/06/2011] [Accepted: 08/18/2011] [Indexed: 02/07/2023]
Abstract
Systemic autoimmune and rheumatic diseases (SAIRDs) are thought to develop due to the failure of autoimmune regulation and tolerance. Current therapies, such as biologics, have improved the clinical results of SAIRDs; however, they are not curative treatments. Recently, new discoveries have been made in immune tolerance and inflammation, such as tolerogenic dendritic cells, regulatory T and B cells, Th 17 cells, inflammatory and tolerogenic cytokines, and intracellular signaling pathways. They lay the foundation for the next generation of the therapies beyond the currently used biologic therapies. New drugs should target the core processes involved in disease mechanisms with the aim to attain complete cure combined with safety and low costs compared to the biologic agents. Re-establishment of autoimmune regulation and tolerance in SAIRDs by the end of the current decade should be the final and realistic target.
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Affiliation(s)
- Yuya Takakubo
- Department of Medicine, Biomedicum Helsinki, University of Helsinki, PO Box 700, Haartmaninkatu 8, 00029 HUS, Finland.
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Zhao Y, Zhang A, Du H, Guo S, Ning B, Yang S. Tolerogenic dendritic cells and rheumatoid arthritis: current status and perspectives. Rheumatol Int 2011; 32:837-44. [PMID: 21904923 DOI: 10.1007/s00296-011-2133-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 08/22/2011] [Indexed: 12/28/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by the influxation of synovia and synovial compartments with immune cells including dendritic cells (DCs). DCs that induce autoimmune tolerance are called tolerogenic DCs (tolDCs). As a promising immunotherapeutic strategy for RA, tolDCs have received increasing attention. In this review, we first introduce the significant role of tolDCs in autoimmune regulation and then describe the manipulation strategies to generate tolDCs; next, we summarize recent progress in the experimental application of tolDCs for RA therapy, and finally we discuss the perspectives of tolerogenic vaccination for the treatment for RA in clinic.
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Ibarra JM, Quinones MP, Estrada CA, Jimenez F, Martinez HG, Ahuja SS. CD8α⁺ dendritic cells improve collagen-induced arthritis in CC chemokine receptor (CCR)-2 deficient mice. Immunobiology 2011; 216:971-8. [PMID: 21531476 PMCID: PMC3426926 DOI: 10.1016/j.imbio.2011.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 02/23/2011] [Accepted: 03/30/2011] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Dendritic cells (DCs) have long been recognized as potential therapeutic targets of rheumatoid arthritis (RA). Increasing evidence has showed that DCs are capable of suppressing autoimmunity by expanding FoxP3⁺ regulatory T cells (T(reg)), which in turn exert immunosuppression by increasing TGFβ-1. In the SKG mice, activated DC prime autoreactive T cells causing autoantibody production and an inflammatory arthritic response. Recently, we reported that CC-chemokine receptor-2 deficient (Ccr2⁻/⁻) mice had impaired DCs migration and reduced CD8α⁺ DCs in the C57Bl/6J mice strain and that these mice were more susceptible to collagen antibody-induced arthritis (CAIA), compared to wild type mice. To examine the mechanism by which DCs contribute to the increased susceptibility of arthritis in Ccr2⁻/⁻ mice, we tested the hypothesis that CD8α⁺ DCs are protective (tolerogenic) against autoimmune arthritis by examining the role of CD8α⁺ DCs in Ccr2⁻/⁻ and SKG mice. METHODS To examine the mechanism by which DCs defects lead to the development of arthritis, we used two murine models of experimental arthritis: collagen-induced arthritis (CIA) in DBA1/J mice and zymosan-induced arthritis in SKG mice. DBA1/J mice received recombinant fms-like tyrosine kinase 3 ligand (Flt3L) injections to expand endogenous DCs populations or adoptive transfers of CD8α⁺ DCs. RESULTS Flt3L-mediated expansion of endogenous CD8α⁺ DCs resulted in heightened susceptibility of CIA. In contrast, supplementation with exogenous CD8α⁺ DCs ameliorated arthritis in Ccr2⁻/⁻ mice and enhanced TGFβ1 production by T cells. Furthermore, SKG mice with genetic inactivation of CCR2 did not affect the numbers of DCs nor improve the arthritis phenotype. CONCLUSION CD8α⁺ DCs were tolerogenic to the development of arthritis. CD8α⁺ DCs deficiency heightened the sensitivity to arthritis in Ccr2⁻/⁻ mice. Ccr2 deficiency did not alter the arthritic phenotype in SKG mice suggesting the arthritis in Ccr2⁻/⁻ mice was T cell-independent.
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MESH Headings
- Adoptive Transfer
- Animals
- Arthritis, Experimental/genetics
- Arthritis, Experimental/immunology
- Arthritis, Experimental/metabolism
- Arthritis, Experimental/pathology
- Arthritis, Experimental/therapy
- Arthritis, Rheumatoid/genetics
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/metabolism
- Arthritis, Rheumatoid/pathology
- Arthritis, Rheumatoid/therapy
- CD8 Antigens/immunology
- Collagen Type II/administration & dosage
- Collagen Type II/adverse effects
- Collagen Type II/immunology
- Dendritic Cells/cytology
- Dendritic Cells/immunology
- Dendritic Cells/transplantation
- Disease Models, Animal
- Immune Tolerance/drug effects
- Immunoglobulins/analysis
- Immunoglobulins/biosynthesis
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Inbred DBA
- Mice, Knockout
- Receptors, CCR2/deficiency
- Receptors, CCR2/genetics
- Signal Transduction
- T-Lymphocytes, Regulatory/cytology
- T-Lymphocytes, Regulatory/drug effects
- T-Lymphocytes, Regulatory/immunology
- fms-Like Tyrosine Kinase 3/administration & dosage
- fms-Like Tyrosine Kinase 3/immunology
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Affiliation(s)
- Jessica M. Ibarra
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
| | - Marlon P. Quinones
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
| | - Carlos A. Estrada
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
| | - Fabio Jimenez
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
| | - Hernan G. Martinez
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
| | - Seema S. Ahuja
- Department of Medicine, University of Texas Health Science Center at San Antonio; San Antonio, TX, 78229-3900, USA
- South Texas Veterans Health Care System, Audie L. Murphy Division, Veterans Administration Center for Research on AIDS and HIV-1 Infection San Antonio,TX
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Dehlin M, Andersson S, Erlandsson M, Brisslert M, Bokarewa M. Inhibition of fms-like tyrosine kinase 3 alleviates experimental arthritis by reducing formation of dendritic cells and antigen presentation. J Leukoc Biol 2011; 90:811-7. [DOI: 10.1189/jlb.1110640] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Shaw J, Fitch P, Cartwright J, Entrican G, Schwarze J, Critchley H, Horne A. Lymphoid and myeloid cell populations in the non-pregnant human Fallopian tube and in ectopic pregnancy. J Reprod Immunol 2011; 89:84-91. [PMID: 21414667 PMCID: PMC3092852 DOI: 10.1016/j.jri.2011.01.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 01/03/2011] [Accepted: 01/09/2011] [Indexed: 01/21/2023]
Abstract
Lymphoid and myeloid cell populations in human endometrium are well-documented and are known to play important roles in providing immune tolerance, controlling trophoblast invasion, and mediating vascular remodeling. Immune cell populations in the Fallopian tube have not been comprehensively studied. The aim of this study was to characterize lymphoid and myeloid cell populations in non-pregnant Fallopian tube and determine whether they are altered in Fallopian tube from women with ectopic pregnancy. Fallopian tube was analyzed by flow cytometry and immunohistochemistry. Populations of CD3+ (CD4+ and CD8+) lymphocytes, LIN1-HLADR+ (CD123+ and CD11c+) dendritic cells, monocytes, neutrophils, and CD56(dim)CD16- natural killer (NK) cells were demonstrated to be present in non-pregnant Fallopian tube. CD123+ dendritic cells were predominant over CD11c+ dendritic cells. Numbers of CD11c+ cells were significantly higher in the progesterone-dominant mid-luteal phase of the menstrual cycle compared with the follicular phase. Numbers of CD45+ leukocytes, CD68+ cells, and CD11c+ cells were higher in Fallopian tube from women with ectopic pregnancy compared with mid-luteal phase Fallopian tube. These data will advance our understanding of normal human Fallopian tube physiology and disorders of Fallopian tube function, such as ectopic pregnancy.
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Affiliation(s)
- J.L.V. Shaw
- Centre for Reproductive Biology, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - P. Fitch
- Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - J. Cartwright
- Centre for Reproductive Biology, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - G. Entrican
- Moredun Research Institute, Pentlands Science Park, Bush Loan, Edinburgh, UK
- The Roslin Institute, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Roslin Biocentre, Midlothian, UK
| | - J. Schwarze
- Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - H.O.D. Critchley
- Centre for Reproductive Biology, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - A.W. Horne
- Centre for Reproductive Biology, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
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Abstract
Dendritic cells form the connection between innate and adoptive mechanisms of the immune system. As antigen-presenting cells, dendritic cells are capable of presenting tumour antigen and effectively stimulating immune response targeted against a tumour. A number of preclinical and clinical studies document dendritic cells' potential in anti-cancer treatment. Increasing knowledge of dendritic cell biology is leading to improved methods for their preparation for clinical application. Unfortunately, there is to date no consensus specifying optimal conditions for dendritic cell preparation in vitro. This review summarizes the methods used for preparing myeloid dendritic cells derived from monocytic precursors while focusing on cytokine cocktails used for their growth, maturation, and functional adjustment.
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Abstract
Aging is accompanied by a progressive decline in the integrity of the immune system, a process known as immunosenescence. Pathological features typical of immune dysfunction in older adults, encompassing dysregulation of innate and adaptive immune responses, characterize rheumatoid arthritis (RA), an autoimmune disease whose incidence increases with age. Recent evidence suggests that certain features of immunosenescence, such as the decrease in T-cell generation and diversity, may contribute to the development of RA. Thus, physiological immunosenescence may render older adults susceptible to RA, and premature immunosenescence may contribute to the development of RA in young adults. In addition, other features of immunosenescence may result from the chronic immune stimulation that occurs in RA and lead to worsening of the disease. This article reviews the immunopathological features common to aging and RA and discusses the mechanisms by which immunosenescence may contribute to the development or progression of RA.
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Affiliation(s)
- Tamsin M Lindstrom
- Geriatric Research Education and Clinical Center, Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA.
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25
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Identification of functional modules that correlate with phenotypic difference: the influence of network topology. Genome Biol 2010; 11:R23. [PMID: 20187943 PMCID: PMC2872883 DOI: 10.1186/gb-2010-11-2-r23] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 01/05/2010] [Accepted: 02/26/2010] [Indexed: 12/24/2022] Open
Abstract
A gene set enrichment analysis method for including network topology in the identification of genes involved in phenotypic alterations is described. Classifications: Genome studies, Methods One of the important challenges to post-genomic biology is relating observed phenotypic alterations to the underlying collective alterations in genes. Current inferential methods, however, invariably omit large bodies of information on the relationships between genes. We present a method that takes account of such information - expressed in terms of the topology of a correlation network - and we apply the method in the context of current procedures for gene set enrichment analysis.
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Miellot-Gafsou A, Biton J, Bourgeois E, Herbelin A, Boissier MC, Bessis N. Early activation of invariant natural killer T cells in a rheumatoid arthritis model and application to disease treatment. Immunology 2010; 130:296-306. [PMID: 20113367 DOI: 10.1111/j.1365-2567.2009.03235.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Invariant NKT (iNKT) cells are a distinctive subtype of CD1d-restricted T cells involved in regulating autoimmunity and capable of producing various T helper type 1 (Th1), Th2 and Th17 cytokines. Activation of iNKT cells by their exogenous ligand alpha-galactosylceramide (alpha-GalCer) exerts therapeutic effects in autoimmune diseases such as rheumatoid arthritis (RA). However, the pathophysiological role of iNKT cells in RA, in the absence of exogenous stimulation, is incompletely understood. We investigated the potential pathophysiological effects of iNKT cells in mice with collagen-induced arthritis (CIA), a model of RA. We found that iNKT cells underwent activation only in the early phases of the disease (6 days post-induction). In the liver, but not the spleen or lymph nodes, this early activation led to the release of interleukins -4, -17A and -10 and of interferon-gamma; and an increased CD69 expression. Importantly, clinical and histological signs of arthritis were improved by the functional blockade of iNKT cells by a monoclonal antibody to CD1d at the early phase of the disease. This improvement was associated on day 6 post-induction with decreased expression of co-stimulatory molecules (CD80, CD86, CD40) on splenic dendritic cells and macrophages, whereas regulatory T-cell suppressive effects and proportions were not modified. Taken in concert, these findings suggest that iNKT cells are activated early in the course of CIA and contribute to the pathogenesis of arthritis. Therefore, iNKT-cell activation may be a valid treatment target in RA.
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Teixeira VH, Olaso R, Martin-Magniette ML, Lasbleiz S, Jacq L, Oliveira CR, Hilliquin P, Gut I, Cornelis F, Petit-Teixeira E. Transcriptome analysis describing new immunity and defense genes in peripheral blood mononuclear cells of rheumatoid arthritis patients. PLoS One 2009; 4:e6803. [PMID: 19710928 PMCID: PMC2729373 DOI: 10.1371/journal.pone.0006803] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Accepted: 08/03/2009] [Indexed: 12/13/2022] Open
Abstract
Background Large-scale gene expression profiling of peripheral blood mononuclear cells from Rheumatoid Arthritis (RA) patients could provide a molecular description that reflects the contribution of diverse cellular responses associated with this disease. The aim of our study was to identify peripheral blood gene expression profiles for RA patients, using Illumina technology, to gain insights into RA molecular mechanisms. Methodology/Principal Findings The Illumina Human-6v2 Expression BeadChips were used for a complete genome-wide transcript profiling of peripheral blood mononuclear cells (PBMCs) from 18 RA patients and 15 controls. Differential analysis per gene was performed with one-way analysis of variance (ANOVA) and P values were adjusted to control the False Discovery Rate (FDR<5%). Genes differentially expressed at significant level between patients and controls were analyzed using Gene Ontology (GO) in the PANTHER database to identify biological processes. A differentially expression of 339 Reference Sequence genes (238 down-regulated and 101 up-regulated) between the two groups was observed. We identified a remarkably elevated expression of a spectrum of genes involved in Immunity and Defense in PBMCs of RA patients compared to controls. This result is confirmed by GO analysis, suggesting that these genes could be activated systemically in RA. No significant down-regulated ontology groups were found. Microarray data were validated by real time PCR in a set of nine genes showing a high degree of correlation. Conclusions/Significance Our study highlighted several new genes that could contribute in the identification of innovative clinical biomarkers for diagnostic procedures and therapeutic interventions.
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Affiliation(s)
- Vitor Hugo Teixeira
- GenHotel-EA3886, Evry University, Paris 7 University Medical School, AutoCure European Consortium member, Evry, France.
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