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Dendritic cell and arthritis

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https://www.readbyqxmd.com/read/28529069/cholinergic-modulation-of-the-immune-system-presents-new-approaches-for-treating-inflammation
#1
REVIEW
Donald B Hoover
The nervous system and immune system have broad and overlapping distributions in the body, and interactions of these ubiquitous systems are central to the field of neuroimmunology. Over the past two decades, there has been explosive growth in our understanding of neuroanatomical, cellular, and molecular mechanisms that mediate central modulation of immune functions through the autonomic nervous system. A major catalyst for growth in this field was the discovery that vagal nerve stimulation (VNS) caused a prominent attenuation of the systemic inflammatory response evoked by endotoxin in experimental animals...
May 18, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28528521/myeloid-populations-in-systemic-autoimmune-diseases
#2
REVIEW
María Morell, Nieves Varela, Concepción Marañón
Systemic autoimmune diseases (SADs) encompass a wide spectrum of clinical signs as a reflection of their complex physiopathology. A variety of mechanisms related with the innate immune system are in the origin of the loss of self-tolerance in these diseases, and for most of them, the myeloid leukocytes are key actors. Monocytes, macrophages, dendritic cells, and neutrophils are first-line immune effectors located in the interface between innate and adaptive immunity. They are crucial in the organization of the local and systemic responses to damage-associated molecular patterns (DAMPs) and determine the intensity, orientation, and duration of the local immune response through the expression of chemokines, costimulatory or protolerogenic factors...
May 20, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28511090/inactivation-of-the-ksrp-gene-modifies-collagen-antibody-induced-arthritis
#3
Rudolf Käfer, Katharina Schrick, Lisa Schmidtke, Evelyn Montermann, Dominika Hobernik, Matthias Bros, Ching-Yi Chen, Hartmut Kleinert, Andrea Pautz
The KH type splicing regulatory protein (KSRP) is a nucleic acid binding protein, which negatively regulates the stability and/or translatability of many mRNA species encoding immune-relevant proteins. As KSRP is expressed in immune cells including T and B cells, neutrophils, macrophages and dendritic cells, we wanted to analyze its importance for the development of autoimmune diseases. We chose collagen antibody-induced arthritis (CAIA) as an appropriate autoimmune disease mouse model in which neutrophils and macrophages constitute the main effector cell populations...
May 13, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28499587/the-phosphodiesterase-4-inhibitor-apremilast-inhibits-th1-but-promotes-th17-responses-induced-by-6-sulfo-lacnac-slan-dendritic-cells
#4
Stephanie Oehrl, Hridayesh Prakash, Annette Ebling, Nina Trenkler, Priscila Wölbing, Anja Kunze, Thomas Döbel, Marc Schmitz, Alexander Enk, Knut Schäkel
BACKGROUND: The phosphodiesterase 4 (PDE4) inhibitor apremilast increases cellular cAMP levels and has proven effective in the treatment of psoriasis and psoriasis arthritis. We recently described 6-sulfo LacNAc dendritic cells (slanDCs) as immature DCs in blood and as a subset of inflammatory dermal DCs in psoriasis with a pronounced capacity to produce proinflammatory cytokines and to program Th17/Th1 T cell responses. OBJECTIVE: The aim of this study was to investigate possible immune regulatory effects of the PDE4 inhibitor apremilast on slanDCs...
April 20, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28490801/dendritic-cells-provide-a-therapeutic-target-for-synthetic-small-molecule-analogues-of-the-parasitic-worm-product-es-62
#5
Felicity E Lumb, James Doonan, Kara S Bell, Miguel A Pineda, Marlene Corbet, Colin J Suckling, Margaret M Harnett, William Harnett
ES-62, a glycoprotein secreted by the parasitic filarial nematode Acanthocheilonema viteae, subverts host immune responses towards anti-inflammatory phenotypes by virtue of covalently attached phosphorylcholine (PC). The PC dictates that ES-62 exhibits protection in murine models of inflammatory disease and hence a library of drug-like PC-based small molecule analogues (SMAs) was synthesised. Four sulfone-containing SMAs termed 11a, 11e, 11i and 12b were found to reduce mouse bone marrow-derived dendritic cell (DC) pathogen-associated molecular pattern (PAMP)-induced pro-inflammatory cytokine production, inhibit NF-κB p65 activation, and suppress LPS-induced up-regulation of CD40 and CD86...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28465419/papers-of-note-in-science-immunology2-10
#6
John F Foley
This month's articles show that cholesterol-based ligands position splenic dendritic cells near T cells; how synovial fibroblasts and neutrophils promote inflammation in arthritis; that type I interferon activates liver T cells in obese mice; and how the alternative complement pathway plays a role in antibacterial immunity.
May 2, 2017: Science Signaling
https://www.readbyqxmd.com/read/28455435/cd40l-dependent-pathway-is-active-at-various-stages-of-rheumatoid-arthritis-disease-progression
#7
Yanxia Guo, Alice M Walsh, Ursula Fearon, Malcolm D Smith, Mihir D Wechalekar, Xuefeng Yin, Suzanne Cole, Carl Orr, Trudy McGarry, Mary Canavan, Stephan Kelly, Tai-An Lin, Xuejun Liu, Susanna M Proudman, Douglas J Veale, Costantino Pitzalis, Sunil Nagpal
The inflammatory CD40-CD40L pathway is implicated in various autoimmune diseases, but the activity status of this pathway in various stages of rheumatoid arthritis (RA) progression is unknown. In this study, we used gene signatures of CD40L stimulation derived from human immature dendritic cells and naive B cells to assess the expression of CD40-downstream genes in synovial tissues from anti-citrullinated protein Ab-positive arthralgia, undifferentiated arthritis (UA), early RA, and established RA cohorts in comparison with healthy donors...
April 28, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28451787/future-therapeutic-targets-in-rheumatoid-arthritis
#8
REVIEW
Tommy Tsang Cheung, Iain B McInnes
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by persistent joint inflammation. Without adequate treatment, patients with RA will develop joint deformity and progressive functional impairment. With the implementation of treat-to-target strategies and availability of biologic therapies, the outcomes for patients with RA have significantly improved. However, the unmet need in the treatment of RA remains high as some patients do not respond sufficiently to the currently available agents, remission is not always achieved and refractory disease is not uncommon...
April 27, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28401953/overexpression-of-heparanase-enhances-t-lymphocyte-activities-and-intensifies-the-inflammatory-response-in-a-model-of-murine-rheumatoid-arthritis
#9
Andreas Digre, Kailash Singh, Magnus Åbrink, Rogier M Reijmers, Stellan Sandler, Israel Vlodavsky, Jin-Ping Li
Heparanase is an endo-glucuronidase that degrades heparan sulfate chains. The enzyme is expressed at a low level in normal organs; however, elevated expression of heparanase has been detected in several inflammatory conditions, e.g. in the synovial joints of rheumatoid arthritis (RA) patients. Herein, we have applied the model of collagen-induced arthritis (CIA) to transgenic mice overexpressing human heparanase (Hpa-tg) along with wildtype (WT) mice. About 50% of the induced animals developed clinical symptoms, i...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28376277/dendritic-cells-from-rheumatoid-arthritis-patient-peripheral-blood-induce-th17-cell-differentiation-via-mir-363-integrin-%C3%AE-v-tgf-%C3%AE-axis
#10
Feng Pan, Haiyan Xiang, Juzhen Yan, Liquan Hong, Lahong Zhang, Yuhua Liu, Xiao Feng, Chengsong Cai
BACKGROUND AND AIM: Dendritic cells (DCs) are critical regulators of immune responses. This study was to observe the effect of DCs from peripheral blood on the differentiation of Th17 in rheumatoid arthritis (RA) patients. METHODS AND RESULTS: Peripheral blood samples were collected from 30 RA patients and 20 healthy controls, respectively. Flow cytometry results showed that in contrast with Treg cells, the proportion of Th17 cells in T cells and the Th17/Treg ratio were both increased in RA patients...
April 4, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28371836/differential-effects-of-biological-dmards-on-peripheral-immune-cell-phenotypes-in-patients-with-rheumatoid-arthritis
#11
Shingo Nakayamada, Satoshi Kubo, Maiko Yoshikawa, Yusuke Miyazaki, Naoki Yunoue, Shigeru Iwata, Ippei Miyagawa, Shintaro Hirata, Kazuhisa Nakano, Kazuyoshi Saito, Yoshiya Tanaka
Objective.: The aim of this study was to assess the therapeutic effects of biological DMARDs (bDMARDs) on the diversity of immune cell phenotypes in peripheral blood of patients with RA. Methods.: Peripheral immune cell phenotypes were determined in 108 RA patients who were non-responsive to conventional DMARDs and 33 healthy control subjects by eight-colour flow cytometry. We also examined the correlation between the phenotypes and clinical findings and assessed the effects of 24-week treatment with bDMARDs...
March 27, 2017: Rheumatology
https://www.readbyqxmd.com/read/28357074/traf6-regulates-the-effects-of-polarized-maturation-of-tolerability-marrow-derived-dendritic-cells-on-collagen-induced-arthritis-in-mice
#12
Chenchen Zhuang, Xuezhi Hong, Jia Liu, Xiaohong Luo, Hanyou Mo
The study aimed to investigate the relationship between tumor necrosis factor receptor-associated factor 6 (TRAF6) and a differentially mature dendritic cell (mDC) in collagen-induced arthritis (CIA) mice and to determine whether or not TRAF6 regulates the activation of an immature dendritic cell (iDC) and inhibits iDC maturation to induce immune tolerance. The mouse bone marrow stem cells were induced with recombinant granulocyte-macrophage colony-stimulating factor (rmGM-CSF) and recombinant interleukin-4 (rmIL-4) to differentiate immature dendritic cells (DCs), which were divided into four groups with different maturation states: rmGM-CSF, rmIL-4; TNF-α; LPS; and FK506 group...
February 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28274252/elevated-serum-autoantibodies-against-co-inhibitory-pd-1-facilitate-t-cell-proliferation-and-correlate-with-disease-activity-in-new-onset-systemic-lupus-erythematosus-patients
#13
Hui Shi, Junna Ye, Jialin Teng, Yufeng Yin, Qiongyi Hu, Xinyao Wu, Honglei Liu, Xiaobing Cheng, Yutong Su, Mengru Liu, Juanfang Gu, Ting Lu, HaoJie Chen, Hui Zheng, Yue Sun, Chengde Yang
BACKGROUND: Programmed cell death protein 1 (PD-1) plays an important role in immune response regulation as a co-inhibitory signal during T cell activation. However, there is little known about the serum autoantibody profile of PD-1 in systemic lupus erythematosus (SLE), a disease characterized by the breakdown of immune tolerance to self-antigens and an excessive production of autoantibodies. Thus, we aim to investigate the serum levels and function of anti-PD-1 in patients with new-onset SLE...
March 9, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28267648/expression-of-soluble-cd83-in-plasma-from-early-stage-rheumatoid-arthritis-patients-is-not-modified-by-anti-tnf-%C3%AE-therapy
#14
Anne-Mette Kristensen, Kristian Stengaard-Pedersen, Merete Lund Hetland, Kim Hørslev-Petersen, Peter Junker, Mikkel Østergaard, Per Höllsberg, Bent Deleuran, Malene Hvid
Rheumatoid arthritis (RA) is an autoimmune disease which may lead to severe disabilities due to structural joint damage and extraarticular manifestations The dendritic cell marker CD83 belongs to the immunoglobulin superfamily and has previously been associated with autoimmune diseases. In RA the levels of soluble CD83 (sCD83) are elevated in synovial fluid, however little is known about CD83 expression and regulation in RA. Therefore, we studied how CD83 is expressed in RA and further evaluated the effect of anti-TNF-α therapy hereon...
March 3, 2017: Cytokine
https://www.readbyqxmd.com/read/28237724/the-common-autoimmunity-predisposing-620arg%C3%A2-%C3%A2-trp-variant-of-ptpn22-modulates-macrophage-function-and-morphology
#15
Meihang Li, Hugues Beauchemin, Natalija Popovic, Alan Peterson, Eva d'Hennezel, Ciriaco A Piccirillo, Chao Sun, Constantin Polychronakos
The C1858T single nucleotide polymorphism (SNP) in PTPN22 (protein tyrosine phosphatase nonreceptor 22) leads to the 620 Arg to Trp polymorphism in its encoded human protein LYP. This allelic variant is associated with multiple autoimmune diseases, including type 1 diabetes (T1D), Crohn's disease, rheumatoid arthritis and systemic lupus erythematosus. However, the underlying mechanisms are poorly understood. To study how this polymorphism influences the immune system, we generated a mouse strain with a knock-in of the Trp allele, imitating the human disease-associated variant...
February 22, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28236220/the-function-of-myeloid-dendritic-cells-in-rheumatoid-arthritis
#16
REVIEW
Mary Beth Yu, William H R Langridge
Rheumatoid arthritis (RA) is a systemic autoimmune disease that causes joint pain, inflammation, and loss of function. Disease pathogenesis involves activation and proliferation of autoreactive pro-inflammatory effector T cells. While the details of RA onset and progression remain controversial, dendritic cell (DC) numbers dramatically increase in the synovial joint tissues of RA patients. Based on their key functions as antigen-presenting cells and inducers of T cell differentiation, DCs may play an important role in the initiation of joint inflammation...
February 24, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28230210/synergistic-suppression-of-autoimmune-arthritis-through-concurrent-treatment-with-tolerogenic-dc-and-msc
#17
Rong Li, Yujuan Zhang, Xiufen Zheng, Shanshan Peng, Keng Yuan, Xusheng Zhang, Weiping Min
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...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28216098/potential-influences-of-complement-factor-h-in-autoimmune-inflammatory-and-thrombotic-disorders
#18
Janez Ferluga, Lubna Kouser, Valarmathy Murugaiah, Robert B Sim, Uday Kishore
Complement system homeostasis is important for host self-protection and anti-microbial immune surveillance, and recent research indicates roles in tissue development and remodelling. Complement also appears to have several points of interaction with the blood coagulation system. Deficiency and altered function due to gene mutations and polymorphisms in complement effectors and regulators, including Factor H, have been associated with familial and sporadic autoimmune inflammatory - thrombotic disorders, in which autoantibodies play a part...
April 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28201972/cell-based-tolerogenic-therapy-experience-from-animal-models-of-multiple-sclerosis-type-1-diabetes-and-rheumatoid-arthritis
#19
Ivana Stojanović, Mirjana Dimitrijević, Marta Vives-Pi, Maria Jose Mansilla, Irma Pujol-Autonell, Silvia Rodríguez-Fernandez, Lenka Palová-Jelínková, David P Funda, Alisa Gruden-Movsesijan, Ljiljana Sofronić-Milosavljević, Catharien M U Hilkens, Eva Martínez-Cáceres, Djordje Miljković
Cell-based tolerogenic therapy is a promising approach for the treatment of autoimmune diseases and transplant rejection. Regulatory T cells and tolerogenic dendritic cells have been particularly explored in the treatment of various autoimmune disorders in experimental models of disease. Although some of these cells have already been tested in a limited number of clinical trials, there is still a need for preclinical research on tolerogenic cells in animal models of autoimmunity. This review will focus on the relevance of data obtained from studies in experimental animal models for the use of tolerogenic cell-based therapy in humans...
February 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28191643/cd11b-regulates-the-treg-th17-balance-in-murine-arthritis-via-il-6
#20
Mathias Stevanin, Nathalie Busso, Véronique Chobaz, Matteo Pigni, Sahar Ghassem-Zadeh, Li Zhang, Hans Acha-Orbea, Driss Ehirchiou
Th17 cells are often associated with autoimmunity and been shown to be increased in CD11b(-/-) mice. Here, we examined the role of CD11b in murine collagen-induced arthritis (CIA). C57BL/6 and CD11b(-/-) resistant mice were immunized with type II collagen. CD11b(-/-) mice developed arthritis with early onset, high incidence, and sustained severity compared with C57BL/6 mice. We observed a marked leukocyte infiltration, and histological examinations of the arthritic paws from CD11b(-/-) mice revealed that the cartilage was destroyed in association with strong lymphocytic infiltration...
February 12, 2017: European Journal of Immunology
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