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Dendritic cell and arthritis

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https://www.readbyqxmd.com/read/28902599/the-potential-role-of-inhibitory-receptors-in-the-treatment-of-psoriasis
#1
Neha Shah, Sabina Sandigursky, Adam Mor
Psoriasis is a common autoimmune disorder that affects the skin. Approximately 30% of individuals with psoriasis will develop inflammatory arthritis, often in the setting of human leukocyte antigen B27. Both forms of disease are thought to be the result of prolonged inflammation mediated by T lymphocytes, dendritic cells, and keratinocytes. While there are treatments aimed at immunomodulation, targeting T cell co-inhibitory receptors signaling pathways may provide therapeutic benefit. This review will discuss in detail four T cell co-inhibitory receptors and their potential application for the treatment of psoriasis and psoriatic arthritis...
May 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28900117/dextromethorphan-exhibits-anti-inflammatory-and-immunomodulatory-effects-in-a-murine-model-of-collagen-induced-arthritis-and-in-human-rheumatoid-arthritis
#2
Der-Yuan Chen, Chi-Chien Lin, Yi-Ming Chen, Ya-Hsuan Chao, Deng-Ho Yang
Dextromethorphan (d-3-methoxy-17-methylmorphinan, DXM) is a commonly used antitussive with a favorable safety profile. Previous studies have demonstrated that DXM has anti-inflammatory and immunomodulatory properties; however, the effect of DXM in rheumatoid arthritis (RA) remains unknown. Herein, we found that DXM treatment attenuated arthritis severity and proinflammatory cytokine expression levels, including TNF-α, IL-6, and IL-17A, in paw tissues of CIA mice. DXM treatment also reduced serum TNF-α, IL-6, and IL-17A levels of CIA mice and patients with RA...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28861079/tocilizumab-contributes-to-the-inflammatory-status-of-mature-dendritic-cells-through-interleukin-6-receptor-subunits-modulation
#3
Daniel Meley, Audrey Héraud, Valerie Gouilleux-Gruart, Fabrice Ivanes, Florence Velge-Roussel
Tocilizumab, a humanized anti-IL-6 receptor α (IL-6Rα) is widely used in the treatment of a panel of pathologies such as adult and juvenile rheumatoid arthritis (RA) and the systemic form of juvenile idiopathic arthritis in children. Its indications are expected to be largely extended to other inflammatory diseases in close future. Dendritic cells (DCs) appear to be deeply involved in the immunopathology of these diseases, yet the effects of tocilizumab on these cells were poorly studied. In this study, we explored the effect of tocilizumab on the regulation of IL-6R subunits [gp130, soluble form of IL-6Rα (sIL-6Rα), and mIL-6Rα] in human monocyte-derived DCs...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28855088/drug-nanocarriers-to-treat-autoimmunity-and-chronic-inflammatory-diseases
#4
REVIEW
Davide Prosperi, Miriam Colombo, Ivan Zanoni, Francesca Granucci
Nanoparticles represent a new generation of drug delivery systems that can be engineered to harness optimal target selectivity for specific cells and tissues and high drug loading capacity, allowing for improved pharmacokinetics and enhanced bioavailability of therapeutics. The spontaneous propensity of both organic and colloidal nanoparticles to be captured by the cells of the reticuloendothelial system encouraged their utilization as passive targeting systems that can be preferentially directed to innate immune cells, such as macrophages, dendritic cells and neutrophils...
August 28, 2017: Seminars in Immunology
https://www.readbyqxmd.com/read/28805019/cd11b-gr1-dim-tolerogenic-dendritic-cell-like-cells-are-expanded-in-interstitial-lung-disease-in-skg-mice
#5
Sho Sendo, Jun Saegusa, Takaichi Okano, Soshi Takahashi, Kengo Akashi, Akio Morinobu
OBJECTIVE: SKG mice develop interstitial lung disease (ILD) resembling rheumatoid arthritis-associated ILD (RA-ILD) in human. The aim of this study is to clarify the mechanism behind the lung pathology by analyzing the lung-infiltrating cells in ILD of SKG mice. METHODS: We assessed the severity of zymosan A (ZyA)-induced ILD in SKG mice histologically, and examined lung-infiltrating cells by flow cytometry. Total lung cells and isolated monocytic myeloid-derived suppressor cells (M-MDSCs) were cultured in vitro with GM-CSF (and IL-4)...
August 13, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28804903/targeting-of-tolerogenic-dendritic-cells-towards-heat-shock-proteins-a-novel-therapeutic-strategy-for-autoimmune-diseases
#6
REVIEW
Manon A A Jansen, Rachel Spiering, Femke Broere, Jacob M van Laar, John D Isaacs, Willem van Eden, Catharien M U Hilkens
Tolerogenic dendritic cells (tolDCs) are a promising therapeutic tool to restore immune tolerance in autoimmune diseases. The rationale of using tolDCs is that they can specifically target the pathogenic T cell response, while leaving other, protective T cell responses intact. Several ways of generating therapeutic tolDCs have been described, but whether these tolDCs should be loaded with autoantigen(s), and if so, with which autoantigen(s), remains unclear. Autoimmune diseases, such as rheumatoid arthritis, are not commonly defined by a single, universal, autoantigen...
August 14, 2017: Immunology
https://www.readbyqxmd.com/read/28802996/il-33-matured-dendritic-cells-promote-th17-cell-responses-via-il-1%C3%AE-and-il-6
#7
Su-Ho Park, Myun Soo Kim, Hui Xuan Lim, Daeho Cho, Tae Sung Kim
IL-33 is associated with a variety of autoimmune diseases, such as sclerosis, inflammatory bowel disease, and rheumatoid arthritis. Although IL-33 is mainly involved in the induction of Th2 cells, however, the relationship between IL-33 and Th17 cells is still largely unknown. In this study, we investigated the effects of IL-33 on DC-mediated CD4(+) T cell activation and Th17 cell differentiation because DCs are essential cells for presenting self-antigens to CD4(+) T cells in autoimmune disease conditions...
August 10, 2017: Cytokine
https://www.readbyqxmd.com/read/28799796/immune-modulation-by-curcumin-the-role-of-interleukin-10
#8
Hamid Mollazadeh, Arrigo F G Cicero, Christopher N Blesso, Matteo Pirro, Muhammed Majeed, Amirhossein Sahebkar
Cytokines are small secreted proteins released by different types of cells with specific effects on cellular signaling and communication via binding to their receptors on the cell surface. IL-10 is known to be a pleiotropic and potent anti-inflammatory and immunosuppressive cytokine that is produced by both innate and adaptive immunity cells including dendritic cells, macrophages, mast cells, natural killer cells, eosinophils, neutrophils, B cells, CD8(+) T cells, and TH1, TH2, and TH17 and regulatory T cells...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28777892/therapeutical-modulation-of-plasmacytoid-dendritic-cells-in-experimental-arthritis
#9
Ramzi Nehmar, Ghada Alsaleh, Benjamin Voisin, Vincent Flacher, Alexandre Mariotte, Victoria Saferding, Antonia Puchner, Birgit Niederreiter, Thierry Vandamme, Gernot Schabbauer, Philippe Kastner, Susan Chan, Peggy Kirstetter, Martin Holcmann, Christopher Mueller, Jean Sibilia, Seiamak Bahram, Stephan Blüml, Philippe Georgel
OBJECTIVES: The role of plasmacytoid dendritic cells (pDCs) and type I Interferons in rheumatoid arthritis (RA) remains controversial. To explore their contribution to RA pathogenesis, we induced experimental arthritis in various animal models of pDC depletion. We also monitored the effect of localized pDC recruitment and activation on joint inflammation and bone damage. METHODS: Experimental arthritis in mice was obtained by K/BxN serum transfer, heterologous collagen immunization (CIA) or in hTNF-transgenics...
August 4, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28777803/gm-csf-in-murine-psoriasiform-dermatitis-redundant-and-pathogenic-roles-uncovered-by-antibody-induced-neutralization-and-genetic-deficiency
#10
Tatjana Scholz, Andreas Weigert, Bernhard Brüne, Christian D Sadik, Beate Böhm, Harald Burkhardt
Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a pleiotropic, Th17-derived cytokine thought to critically contribute to the pathogenesis of diverse autoimmune diseases, including rheumatoid arthritis and psoriasis. Treatment with monoclonal antibodies that block GM-CSF activity is associated with favorable therapeutic effects in patients with rheumatoid arthritis. We evaluated the role of GM-CSF as a potential target for therapeutic interference in psoriasis using a combined pharmacologic and genetic approach and the mouse model of imiquimod-induced psoriasiform dermatitis (IMQPD)...
2017: PloS One
https://www.readbyqxmd.com/read/28708978/methotrexate-combined-with-cyclophosphamide-attenuates-murine-collagen-induced-arthritis-by-modulating-the-expression-level-of-breg-and-dcs
#11
Jinnan Fan, Jing Luo, Caiping Yan, Runxi Hao, Xiangcong Zhao, Ruihuan Jia, Jiaojiao He, Dan Xu, Miao Miao, Xiaofeng Li
To explore the mechanism of methotrexate (MTX) and its combination with cyclophosphamide (CTX) in collagen-induced arthritis (CIA), we investigated the levels of several immune cells and cytokines in mice with different treatments. CIA was induced in DBA/1 mice at the age of 7 weeks by primary immunization with 100μl emulsion containing 2mg/ml bovine type II collagen which was mixed with complete Freund's adjuvant (CFA). The booster immunization was performed with 50-100μl emulsion containing 2mg/ml bovine type II collagen (CII) mixed with incomplete Freund's adjuvant (IFA)...
July 11, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28702462/adoptive-cell-therapy-of-induced-regulatory-t-cells-expanded-by-tolerogenic-dendritic-cells-on-murine-autoimmune-arthritis
#12
Jie Yang, Lidong Liu, Yiming Yang, Ning Kong, Xueyu Jiang, Juan Sun, Rufeng Xie
OBJECTIVE: Tolerogenic dendritic cells (tDCs) can expand TGF-β-induced regulatory T cells (iTregs); however, the therapeutic utility of these expanded iTregs in autoimmune diseases remains unknown. We sought to determine the properties of iTregs expanded by mature tolerogenic dendritic cells (iTregmtDC) in vitro and explore their potential to ameliorate collagen-induced arthritis (CIA) in a mouse model. METHODS: After induction by TGF-β and expansion by mature tDCs (mtDCs), the phenotype and proliferation of iTregmtDC were assessed by flow cytometry...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28701761/antigen-specific-immunotherapies-in-rheumatic-diseases
#13
REVIEW
Judit Pozsgay, Zoltán Szekanecz, Gabriella Sármay
The main goal of antigen-specific immunotherapy (ASI) in autoimmune and rheumatic diseases is to reprogramme or remove autoreactive cells and/or induce immune tolerance to self-antigens. Current therapies in these diseases either treat symptoms or slow down disease progression but are not yet curative or preventative - disease-specific treatments are urgently needed. In contrast to the nonspecific treatments in current use that induce generalized immune suppression, which is associated with several adverse effects including increased risk of infections, ASIs target a restricted subset of B cells or T cells, and thus do not compromise systemic immunity and host defence...
September 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28639625/microrna-34a-dependent-regulation-of-axl-controls-the-activation-of-dendritic-cells-in-inflammatory-arthritis
#14
Mariola Kurowska-Stolarska, Stefano Alivernini, Emma Garcia Melchor, Aziza Elmesmari, Barbara Tolusso, Clare Tange, Luca Petricca, Derek S Gilchrist, Gabriele Di Sante, Chantal Keijzer, Lynn Stewart, Clara Di Mario, Vicky Morrison, James M Brewer, Duncan Porter, Simon Milling, Ronald D Baxter, David McCarey, Elisa Gremese, Greg Lemke, Gianfranco Ferraccioli, Charles McSharry, Iain B McInnes
Current treatments for rheumatoid arthritis (RA) do not reverse underlying aberrant immune function. A genetic predisposition to RA, such as HLA-DR4 positivity, indicates that dendritic cells (DC) are of crucial importance to pathogenesis by activating auto-reactive lymphocytes. Here we show that microRNA-34a provides homoeostatic control of CD1c(+) DC activation via regulation of tyrosine kinase receptor AXL, an important inhibitory DC auto-regulator. This pathway is aberrant in CD1c(+) DCs from patients with RA, with upregulation of miR-34a and lower levels of AXL compared to DC from healthy donors...
June 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28631608/one-year-in-review-2017-pathogenesis-of-rheumatoid-arthritis
#15
REVIEW
Francesca Angelotti, Alice Parma, Giacomo Cafaro, Riccardo Capecchi, Alessia Alunno, Ilaria Puxeddu
Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease influenced by both genetic and environmental factors. It has been postulated that a high-risk genetic background, in combination with epigenetic marks and environmental exposures, leads to a cascade of events inducing synovitis and consequent destructive arthritis. The clinical picture of joint involvement in RA is the result of chronic inflammation of the synovium, characterised by interactions of resident cells such as fibroblast-like synoviocytes (FLS) with cells of the innate (e...
May 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28626064/monitoring-c3ar-expression-using-a-floxed-tdtomato-c3ar-reporter-knock-in-mouse
#16
Katharina M Quell, Christian M Karsten, Anna Kordowski, Larissa Nogueira Almeida, Daria Briukhovetska, Anna V Wiese, Jing Sun, Fanny Ender, Konstantina Antoniou, Torsten Schröder, Inken Schmudde, Johann L Berger, Peter König, Tillman Vollbrandt, Yves Laumonnier, Jörg Köhl
C3a exerts multiple biologic functions through activation of its cognate C3a receptor. C3(-/-) and C3aR(-/-) mice have been instrumental in defining important roles of the C3a/C3aR axis in the regulation of acute and chronic inflammatory diseases, including ischemia/reperfusion injury, allergic asthma, autoimmune nephritis, and rheumatoid arthritis. Surprisingly little is known about C3aR expression and function in immune and stromal cells. To close this gap, we generated a floxed tandem-dye Tomato (tdTomato)-C3aR reporter knock-in mouse, which we used to monitor C3aR expression in cells residing in the lung, airways, lamina propria (LP) of the small intestine, brain, visceral adipose tissue, bone marrow (BM), spleen, and the circulation...
June 16, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28606971/response-to-does-il-38-act-on-macrophages-and-or-dendritic-cells-in-arthritis-by-jiang-et-al
#17
Marie-Astrid Boutet, Frédéric Blanchard, Benoît Le Goff
No abstract text is available yet for this article.
June 12, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28598681/soluble-cd206-plasma-levels-in-rheumatoid-arthritis-reflect-decrease-in-disease-activity
#18
Line Dam Heftdal, Kristian Stengaard-Pedersen, Lykke Midtbøll Ørnbjerg, Merete Lund Hetland, Kim Hørslev-Petersen, Peter Junker, Mikkel Østergaard, Malene Hvid, Bent Deleuran, Holger Jon Møller, Stinne Ravn Greisen
Rheumatoid arthritis (RA) is characterized by chronic joint inflammation and infiltration by activated macrophages. TNFα is a central mediator in this process. The mannose receptor, CD206, is a scavenger receptor expressed by M2A-macrophages and dendritic cells. It is involved in collagen internalization and degradation. The soluble form has been suggested as a biomarker of M2A-macrophage activation. The aim of this study was to investigate sCD206 plasma levels in early RA patients initiating anti-TNFα treatment...
June 9, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28581446/tregs-restrain-dendritic-cell-autophagy-to-ameliorate-autoimmunity
#19
Themis Alissafi, Aggelos Banos, Louis Boon, Tim Sparwasser, Alessandra Ghigo, Kajsa Wing, Dimitrios Vassilopoulos, Dimitrios Boumpas, Triantafyllos Chavakis, Ken Cadwell, Panayotis Verginis
Design of efficacious Treg-based therapies and establishment of clinical tolerance in autoimmune diseases have proven to be challenging. The clinical implementation of Treg immunotherapy has been hampered by various impediments related to the stability and isolation procedures of Tregs as well as the specific in vivo targets of Treg modalities. Herein, we have demonstrated that Foxp3+ Tregs potently suppress autoimmune responses in vivo through inhibition of the autophagic machinery in DCs in a cytotoxic T-lymphocyte-associated protein 4-dependent (CTLA4-dependent) manner...
June 30, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28578466/dopaminergic-regulation-of-innate-immunity-a-review
#20
REVIEW
Monica Pinoli, Franca Marino, Marco Cosentino
Dopamine (DA) is a neurotransmitter in the central nervous system as well as in peripheral tissues. Emerging evidence however points to DA also as a key transmitter between the nervous system and the immune system as well as a mediator produced and released by immune cells themselves. Dopaminergic pathways have received so far extensive attention in the adaptive branch of the immune system, where they play a role in health and disease such as multiple sclerosis, rheumatoid arthritis, cancer, and Parkinson's disease...
June 3, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
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