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https://www.readbyqxmd.com/read/28337868/inflammation-in-lung-after-acute-myocardial-infarction-is-induced-by-dendritic-cell-mediated-immune-response
#1
L J Hu, W Y Ren, Q J Shen, H Y Ji, L Zhu
The present study was performed to describe the changes of lung tissues in mice with acute myocardial infarction (AMI) and also explain the cell mechanism involved in inflammation in lung. AMI was established by left coronary ligation in mice. Then mice were divided into three groups: control group, MW1 group (sampling after surgery for one week) and MW2 group (sampling after surgery for two weeks). Afterwards, measurement of lung weight and lung histology, cell sorting in bronchoalveolar lavage (BAL) fluid and detection of several adhesive molecules, inflammatory molecules as well as enzyme associated with inflammation were performed...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28330867/influenza-vaccines-differentially-regulate-the-interferon-response-in-human-dendritic-cell-subsets
#2
Shruti Athale, Romain Banchereau, LuAnn Thompson-Snipes, Yuanyuan Wang, Karolina Palucka, Virginia Pascual, Jacques Banchereau
Human dendritic cells (DCs) play a fundamental role in the initiation of long-term adaptive immunity during vaccination against influenza. Understanding the early response of human DCs to vaccine exposure is thus essential to determine the nature and magnitude of maturation signals that have been shown to strongly correlate with vaccine effectiveness. In 2009, the H1N1 influenza epidemics fostered the commercialization of the nonadjuvanted monovalent H1N1 California vaccine (MIV-09) to complement the existing nonadjuvanted trivalent Fluzone 2009-2010 vaccine (TIV-09)...
March 22, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28315353/crystal-structure-of-the-extracellular-domain-of-the-human-dendritic-cell-surface-marker-cd83
#3
Christiane S Heilingloh, Stefan Klingl, Claudia Egerer-Sieber, Benedikt Schmid, Sigrid Weiler, Petra Mühl-Zürbes, Jörg Hofmann, Joachim D Stump, Heinrich Sticht, Mirko Kummer, Alexander Steinkasserer, Yves A Muller
CD83 is a type-I membrane protein and an efficient marker for identifying mature dendritic cells. Whereas membrane-bound full-length CD83 co-stimulates the immune system, a soluble variant (sCD83), consisting of the extracellular domain, only, displays strong immune-suppressive activities. Besides a prediction that sCD83 adopts a V-set Ig-like fold, however, little is known about the molecular architecture of CD83 and the mechanism by which CD83 exerts is function on dendritic cells and additional immune cells...
March 14, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28298162/expression-and-significance-of-dendritic-cells-and-th17-treg-in-serum-and-placental-tissues-of-patients-with-intrahepatic-cholestasis-of-pregnancy
#4
Xiang Kong, Yan Kong, Fangyuan Zhang, Tingting Wang, Xiaotong Zhu
PURPOSE: Dendritic cells (DCs) are involved in immune system, which can also regulate the differentiation of T helper 17 (Th17) and regulatory T cells (Treg). DCs and Th17/Treg participate in preeclampsia and recurrent spontaneous abortion (RSA), but there is still lack of research in intrahepatic cholestasis of pregnancy (ICP). The aim was to evaluate the expression and significance of CD83(+)DCs, CD1a(+)DCs, interleukin-17 (IL-17) and IL-35 in serum and placental tissues of patients with ICP...
March 15, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28275769/immunomodulatory-effect-of-protease-hydrolysates-from-ovotransferrin
#5
Lin Liu, Mingsheng Xu, Yonggang Tu, Huaying Du, Yulan Zhou, Gaoxiang Zhu
Proteins and bioactive peptides in avian egg white exert diverse biological activities. This study is designed to investigate the effect of protease hydrolysates from ovotransferrin (OVT) on bone marrow-derived dendritic cells (BMDCs) maturation. The results show that OVT-derived pepsin hydrolysate effectively inhibits lipopolysaccharide (LPS)-induced BMDCs maturation by reducing the expression levels of MHC-II, CD83, CD86 and the production of TNF-α, IL-12p70, and RANTES, but increases the production of IL-10...
March 9, 2017: Food & Function
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
#6
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/28260295/-experimental-study-on-the-immune-response-of-fusion-tumor-vaccine-of-hepg2-and-dendritic-cells-in-vitro
#7
Y B Pang, B Y Cui, J He, X P Huang, W Liang, L Q Li, X L Luo
Objective: To estimate the immune response of HepG2/dendritic cell (DC) fusion cells vaccines against HepG2 cells in vitro. Methods: Peripheral blood mononuclear cells (PBMCs) were isolated from healthy donors by Ficoll-Hypaque density-gradient centrifugation.Then DC were obtain from PBMCs by culturing in medium containing granulocyte macrophage colony-stimulating factor (GM-CSF) and interleukin-4 (IL-4) for 5 days.DC and HepG2 fusion cells were induced by polythyleneglycol (PEG). The fusion cells were examined under fluorescence microscope by labeling DCs and HepG2 with green and red fluorescein, respectively, and then the fusion rates were analyzed by flow cytometry...
February 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28251950/-morphofunctional-changes-of-dendritic-cells-induced-by-sulfated-polysaccharides-of-brown-algae
#8
I D Makarenkova, N K Akhmatova, S P Ermakova, N N Besednova
The effects of various sulfated polysaccharides of brown algae Fucus evanescens, Saccharina cichorioides and Saccharina japonica on the morphofunctional changes of dendritic cells have been investigated using flow cytometry and phase-contrast microscopy. The dendritic cells are characterized by larger sizes, vacuolated cytoplasm, eccentrically located nucleus, and also by the presence of numerous cytoplasmic pseudopodia of various shapes. They express surface markers, indicating their maturation (CD83, CD11c, HLA-DR, CD86)...
January 2017: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/28240301/pplase-of-dermatophagoides-farinae-promotes-ovalbumin-induced-airway-allergy-by-modulating-the-functions-of-dendritic-cells-in-a-mouse-model
#9
Hui Wang, Lihua Mo, Xiaojun Xiao, Shu An, Xiaoyu Liu, Jinge Ba, Weifang Wu, Pixin Ran, Pingchang Yang, Zhigang Liu
Our previous studies revealed that many proteins in addition to the known allergens of D. farinae have not been fully characterized. We observed that Pplase did not respond to serum collected from patients sensitized to D. farinae. In a mouse model, Pplase significantly enhanced airway hyperresponsiveness (AHR) and Th2 responses induced by ovalbumin (OVA) compared with mice treated with OVA alone. Moreover, exposure to Pplase significantly increased the expression of IRF4, CD80, CD83, MHCII and TNF-α in DC2...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28203230/the-major-immediate-early-protein-ie2-of-human-cytomegalovirus-is-sufficient-to-induce-proteasomal-degradation-of-cd83-on-mature-dendritic-cells
#10
Christiane S Heilingloh, Linda Grosche, Mirko Kummer, Petra Mühl-Zürbes, Lisa Kamm, Myriam Scherer, Melanie Latzko, Thomas Stamminger, Alexander Steinkasserer
Human cytomegalovirus (HCMV) is the prototypic beta-herpesvirus and widespread throughout the human population. While infection is asymptomatic in healthy individuals, it can lead to high morbidity and mortality in immunocompromised persons. Importantly, HCMV evolved multiple strategies to interfere with immune cell function in order to establish latency in infected individuals. As mature DCs (mDCs) are antigen-presenting cells able to activate naïve T cells they play a crucial role during induction of effective antiviral immune responses...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28193829/soluble-cd83-inhibits-t-cell-activation-by-binding-to-the-tlr4-md-2-complex-on-cd14-monocytes
#11
Joe M Horvatinovich, Elizabeth W Grogan, Marcus Norris, Alexander Steinkasserer, Henrique Lemos, Andrew L Mellor, Irina Y Tcherepanova, Charles A Nicolette, Mark A DeBenedette
The transmembrane protein CD83, expressed on APCs, B cells, and T cells, can be expressed as a soluble form generated by alternative splice variants and/or by shedding. Soluble CD83 (sCD83) was shown to be involved in negatively regulating the immune response. sCD83 inhibits T cell proliferation in vitro, supports allograft survival in vivo, prevents corneal transplant rejection, and attenuates the progression and severity of autoimmune diseases and experimental colitis. Although sCD83 binds to human PBMCs, the specific molecules that bind sCD83 have not been identified...
March 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28169322/collagen-scaffold-microenvironments-modulate-cell-lineage-commitment-for-differentiation-of-bone-marrow-cells-into-regulatory-dendritic-cells
#12
Yongxiang Fang, Bin Wang, Yannan Zhao, Zhifeng Xiao, Jing Li, Yi Cui, Sufang Han, Jianshu Wei, Bing Chen, Jin Han, Qingyuan Meng, Xianglin Hou, Jianxun Luo, Jianwu Dai, Zhizhong Jing
The microenvironment plays a pivotal role for cell survival and functional regulation, and directs the cell fate determination. The biological functions of DCs have been extensively investigated to date. However, the influences of the microenvironment on the differentiation of bone marrow cells (BMCs) into dendritic cells (DCs) are not well defined. Here, we established a 3D collagen scaffold microenvironment to investigate whether such 3D collagen scaffolds could provide a favourable niche for BMCs to differentiate into specialised DCs...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28164558/increased-number-of-mast-cells-in-atherosclerotic-lesions-correlates-with-the-presence-of-myeloid-but-not-plasmacytoid-dendritic-cells-as-well-as-pro-inflammatory-t-cells
#13
Ilonka Rohm, Sandra Sattler, Yevgeniya Atiskova, Daniel Kretzschmar, Rudin Pistulli, Marcus Franz, Christian Jung, Gita Mall, Thomas Kronert, Paul C Schulze, Atilla Yilmaz
BACKGROUND: Atherosclerosis is an inflammatory disease of the vessel wall promoted by different immune cells and inflammatory mediators. METHODS: In this study, 26 human plaques and 12 control vessels without atherosclerosis were immunohistochemically stained to analyze the emergence of mast cells dependent on plaque morphology and to correlate mast cell occurrence with the emergence of myeloid as well as plasmacytoid dendritic cells. Also, mast cell emergence was correlated with the number of pro-inflammatory T cells...
December 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28099196/use-of-engineered-exosomes-expressing-hla-and-costimulatory-molecules-to-generate-antigen-specific-cd8-t-cells-for-adoptive-cell-therapy
#14
Sueon Kim, Hyun-Jung Sohn, Hyun-Joo Lee, Dae-Hee Sohn, Seung-Joo Hyun, Hyun-Il Cho, Tai-Gyu Kim
Dendritic cell-derived exosomes (DEX) comprise an efficient stimulator of T cells. However, the production of sufficient DEX remains a barrier to their broad applicability in immunotherapeutic approaches. In previous studies, genetically engineered K562 have been used to generate artificial antigen presenting cells (AAPC). Here, we isolated exosomes from K562 cells (referred to as CoEX-A2s) engineered to express human leukocyte antigen (HLA)-A2 and costimulatory molecules such as CD80, CD83, and 41BBL. CoEX-A2s were capable of stimulating antigen-specific CD8 T cells both directly and indirectly via CoEX-A2 cross-dressed cells...
January 17, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28099147/ctla-4-positive-breast-cancer-cells-suppress-dendritic-cells-maturation-and-function
#15
Xi Chen, Qianqian Shao, Shengnan Hao, Zhonghua Zhao, Yang Wang, Xiaofan Guo, Ying He, Wenjuan Gao, Haiting Mao
Cytotoxic T lymphocyte-associated antigen 4 (CTLA-4), a potent immunoregulatory molecule, can down-regulate T-cell activation and inhibit anti-tumor immune response. This study showed that LPS-stimulated human dendritic cells (DCs) decreased the expression of HLA-DR, CD83 and costimulatory molecules (CD40, CD80 and CD86) following coculturing with CTLA-4+ breast cancer cells. Moreover, the suppressed DCs further inhibited proliferation of allogeneic CD4+/CD8+ T-cells, differentiation of Th1 and function of cytotoxic lymphocytes (CTLs)...
January 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28096318/bone-marrow-mesenchymal-stem-cells-inhibit-dendritic-cells-differentiation-and-maturation-by-microrna-23b
#16
Jingguo Wu, Chengbo Ji, Qingwei Jia, Feifei Cao, Yong Li, Xishan Zhang, Lanping Wang
BACKGROUND AND AIMS: Research on regulation and its mechanism of bone marrow mesenchymal stem cells (BMSCs) on dendritic cells (DCs) which is the initiating factor in immune response has applicable clinical value. Although BMSCs have a significant regulatory effect on the maturation of DCs, its molecular mechanism is still unclear. METHODS: Isolation and culture of BMSCs and DCs, they were co-cultured in different proportions. Flow cytometry was used to detect the expression of DCs markers (CD83, CD11c)...
January 17, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28052400/programmed-death-1-ligand-1-and-2-expression-in-cutaneous-squamous-cell-carcinoma-and-their-relationship-with-tumor-infiltrating-dendritic-cells
#17
Qingqing Jiao, Cuiping Liu, Wenzhong Li, Wei Li, Fuming Fang, Qihong Qian, Xueguang Zhang
The Programmed Death-1 (PD-1) receptor ligands, PD-L1 and PD-L2, are costimulatory molecules that contribute to the negative regulation of T-lymphocyte activation. It is still unclear whether there is correlation between PD-L1 or PD-L2 and tumor infiltrating dendritic cells (TIDCs) in cutaneous squamous cell carcinoma (CSCC). The aim of this study was to analyze PD-L1 and PD-L2 expression and dendritic cells (DCs) infiltration in tumor tissue of CSCC patients and investigate their clinical significance. Immunohistochemical analysis was used to evaluate the expression of PD-L1, PD-L2, CD1a, and CD83 in 61 CSCC tissues...
January 3, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28031342/transcriptional-classification-and-functional-characterization-of-human-airway-macrophage-and-dendritic-cell-subsets
#18
Vineet I Patel, J Leland Booth, Elizabeth S Duggan, Steven Cate, Vicky L White, David Hutchings, Susan Kovats, Dennis M Burian, Mikhail Dozmorov, Jordan P Metcalf
The respiratory system is a complex network of many cell types, including subsets of macrophages and dendritic cells that work together to maintain steady-state respiration. Owing to limitations in acquiring cells from healthy human lung, these subsets remain poorly characterized transcriptionally and phenotypically. We set out to systematically identify these subsets in human airways by developing a schema of isolating large numbers of cells by whole-lung bronchoalveolar lavage. Six subsets of phagocytic APC (HLA-DR(+)) were consistently observed...
February 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28031109/-immature-dendritic-cells-phagocytosing-apoptotic-human-spleen-cells-treated-with-puva-inhibits-the-maturation-induced-by-lps
#19
Shaozhen Yang, Guosheng Du, Yuxiang Wei, Longlong Suo, Lin Zhou, Likui Feng, Jiyong Song, Zhidong Zhu, Yonggen Zheng
Objective To investigate whether lipopolysaccharide (LPS) can induce the maturation of immature dendritic cells (imDCs) which phagocytose apoptotic spleen lymphocytes. Methods Human peripheral blood mononuclear cells (PBMCs) were induced to produce DCs by interleukin 4 (IL-4) and recombinant human granulocyte macrophage colony stimulating factor (rhGM-CSF). Human spleen cells (hSPs) were isolated and treated with psoralen combined with ultraviolet A(PUVA) to obtain apoptotic PUVA-hSPs. Co-culture of imDCs with PUVA-hSPs resulted in extracorporeal photochemotherapeutic dendritic cells (ecpDCs)...
January 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28017828/effect-of-dezocine-on-il-12-and-il-10-secretion-and-lymphocyte-activation-by-culturing-dendritic-cells-from-human-umbilical-cord-blood
#20
Chang Feng, Man Feng, Ran Jiao, Dongyi Liu, Yanwu Jin, Xin Zhao, Ruixue Xiao
Dezocine has been generally utilized for pain therapy and auxiliary anesthesia. Although it has some advantages on the prevention of some anesthesia related complications, its effect on immune responses remains unclear. Our study investigated the effects of Dezocine on IL-10 and IL-12 secretion and lymphocytes activation by culturing dendritic cells (DCs), and revealed the underlying mechanism. Mononuclear cells were divided into negative control group (GN), positive control group (GP), experimental group (GD; GD5, D7, D9)...
December 22, 2016: European Journal of Pharmacology
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