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https://www.readbyqxmd.com/read/29045966/-immune-effects-of-specific-ctls-response-induced-by-dendritic-cells-pulsed-with-ny-eso-1-peptide
#1
J W Liu, X Lu, Z M Yang, L J Deng, L Yang
OBJECTIVE: To explore the potential of autologous dendritic cells (DCs) pulsed with caner/testis antigen NY-ESO-1 peptides in inducing specific cytotoxic T lymphocyte (CTLs) response and antineoplastic immune function of specific CTLs. METHODS: Fifteen patients with II to III stage positive HLA -A0201(+) and NY-ESO-1(+) were enrolled in the Cancer Hospital Chinese Academy of Medical Sciences on the basis of preclinical experiments from November 2014 to October 2015, and their peripheral blood mononuclear cells (PBMCs) and peripheral blood lymphocytes (PBLs) were isolated...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29042196/dcir3-and-dcir4-are-co-expressed-on-inflammatory-and-patrolling-monocytes
#2
Yu Hsu, Ryo Okada, Takashi Nishimura, Norihito Kawasaki, Kazuo Yamamoto, Naoki Matsumoto
Dendritic cell inhibitory receptor 3 (DCIR3) is a member of dendritic immuno-receptor family, of which protein expression has been unknown. We established a specific monoclonal antibody against mouse DCIR3 and investigated the expression of DCIR3 on immune cells of various immune organs. We found that DCIR3 was expressed on monocytes, but not on eosinophils and neutrophils. We also found the existence of a dichotomy in the levels of the expression of DCIR3 on monocytes in bone marrow, blood and spleen. Further investigation of the expression of several cell surface markers on DCIR3(High) cells and DCIR3(Low) cells revealed that DCIR3(High) cells were Ly-6C(-) CD43(High) CD11c(+) CD80(+) NK1...
October 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29039143/cd80-regulates-th17-cell-differentiation-in-coxsackie-virus-b3-induced-acute-myocarditis
#3
Yanlan Huang, Yong Li, Bin Wei, Weifeng Wu, Xingcui Gao
The cluster of differentiation protein complex, CD80/CD86, regulates Th1/Th2 differentiation in autoimmune disease. In order to establish the effects of CD80/CD86 on Th17 cell differentiation in acute viral myocarditis (VMC), we infected C57BL/6 mice with Coxsackie virus B3 (CVB3) and examined the effects of the treatment with anti-CD80/CD86 monoclonal antibodies (mAbs) on Th17 cell differentiation in vivo. The effects of anti-CD80/CD86 mAbs on Th17 cell differentiation were further evaluated in vitro. The treatment with anti-CD80 mAb induced marked suppression of Th17 cell differentiation and ROR-γt mRNA expression, whereas anti-CD86 mAb alone had no effect, both in vivo and in vitro...
October 16, 2017: Inflammation
https://www.readbyqxmd.com/read/29031722/activated-macrophages-control-human-adipocyte-mitochondrial-bioenergetics-via-secreted-factors
#4
Michaela Keuper, Stephan Sachs, Ellen Walheim, Lucia Berti, Bernhard Raedle, Daniel Tews, Pamela Fischer-Posovszky, Martin Wabitsch, Martin Hrabě de Angelis, Gabi Kastenmüller, Matthias H Tschöp, Martin Jastroch, Harald Staiger, Susanna M Hofmann
OBJECTIVE: Obesity-associated WAT inflammation is characterized by the accumulation and local activation of macrophages (MΦs), and recent data from mouse studies suggest that macrophages are modifiers of adipocyte energy metabolism and mitochondrial function. As mitochondrial dysfunction has been associated with obesity and the metabolic syndrome in humans, herein we aimed to delineate how human macrophages may affect energy metabolism of white adipocytes. METHODS: Human adipose tissue gene expression analysis for markers of macrophage activation and tissue inflammation (CD11c, CD40, CD163, CD206, CD80, MCP1, TNFα) in relationship to mitochondrial complex I (NDUFB8) and complex III (UQCRC2) was performed on subcutaneous WAT of 24 women (BMI 20-61 kg/m(2))...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29030011/influence-of-pasteurella-multocida-toxin-on-the-differentiation-of-dendritic-cells-into-osteoclasts
#5
Sushmita Chakraborty, Bianca Kloos, Nina Roetz, Silke Schmidt, Tatjana Eigenbrod, Shigeki Kamitani, Katharina F Kubatzky
Dendritic cells (DC) are antigen-presenting cells that connect the innate and adaptive immune system to ensure an efficient immune response during the course of an infection. Recently, DC came into the spotlight as a potential source of osteoclast progenitors, especially under (auto)inflammatory conditions. The virulence factor Pasteurella multocida Toxin (PMT) causes atrophic rhinitis in pigs, a disease characterised by a severe reduction of nasal bone. Our group and others have shown the potential of PMT in mediating differentiation of monocytes/macrophages into bone-resorbing osteoclasts...
September 12, 2017: Immunobiology
https://www.readbyqxmd.com/read/29027667/co-inhibitory-profile-and-cytotoxicity-of-cd57-pd-1-t-cells-in-end-stage-renal-disease-patients
#6
Rens Kraaijeveld, Gretchen N de Graav, Marjolein Dieterich, Nicolle H R Litjens, Dennis A Hesselink, Carla C Baan
Blockade of the CD80/86-CD28 pathway by belatacept after kidney transplantation is associated with an increased risk of rejection as compared with standard, calcineurin inhibitor (CNI)-based therapy. CD28(-) T-cells, which express CD57, are not susceptible to belatacept treatment. High number of CD4(+) CD57(+) PD-1(-) T-cells pre transplantation have been associated with a higher chance of rejection, although conflicting data have been reported. To investigate the working mechanism behind this possible higher chance of rejection, we studied the expression of co-inhibitory molecules (CD223, CD244 and PD-1), proliferative capacity and cytotoxic potential of FACS-sorted CD4(+) CD57(+) PD-1(-) and CD8(+) CD57(+) PD-1(-) T-cells, and their CD57(-) control populations, after allo antigen stimulation...
October 13, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29023371/expression-profiles-of-ligands-for-activating-natural-killer-cell-receptors-on-hiv-infected-and-uninfected-cd4%C3%A2-%C2%BA-t-cells
#7
Alexandra Tremblay-McLean, Julie Bruneau, Bertrand Lebouché, Irene Lisovsky, Rujun Song, Nicole F Bernard
Natural Killer (NK) cell responses to HIV-infected CD4 T cells (iCD4) depend on the integration of signals received through inhibitory (iNKR) and activating NK receptors (aNKR). iCD4 activate NK cells to inhibit HIV replication. HIV infection-dependent changes in the human leukocyte antigen (HLA) ligands for iNKR on iCD4 are well documented. By contrast, less is known regarding the HIV infection related changes in ligands for aNKR on iCD4. We examined the aNKR ligand profiles HIV p24⁺ HIV iCD4s that maintained cell surface CD4 (iCD4⁺), did not maintain CD4 (iCD4(-)) and uninfected CD4 (unCD4) T cells for expression of unique long (UL)-16 binding proteins-1 (ULBP-1), ULBP-2/5/6, ULBP-3, major histocompatibility complex (MHC) class 1-related (MIC)-A, MIC-B, CD48, CD80, CD86, CD112, CD155, Intercellular adhesion molecule (ICAM)-1, ICAM-2, HLA-E, HLA-F, HLA-A2, HLA-C, and the ligands to NKp30, NKp44, NKp46, and killer immunoglobulin-like receptor 3DS1 (KIR3DS1) by flow cytometry on CD4 T cells from 17 HIV-1 seronegative donors activated and infected with HIV...
October 12, 2017: Viruses
https://www.readbyqxmd.com/read/29022493/immunonutrition-before-esophagectomy-impact-on-immune-surveillance-mechanisms
#8
Marco Scarpa, Andromachi Kotsafti, Matteo Fassan, Melania Scarpa, Francesco Cavallin, Teresa Nardi, Eleonora Pinto, Rita Alfieri, Matteo Cagol, Marco Agostini, Massimo Rugge, Ignazio Castagliuolo, Carlo Castoro
Preoperative oral immunonutrition was demonstrated to improve immune response and to decrease the infection rate in patients with cancer. This study aimed to assess how immunonutrition could influence the immune cell response in the mucosal microenvironment of esophageal adenocarcinoma. Therefore, A prospective cohort of consecutive patients undergoing esophagectomy for esophageal adenocarcinoma was enrolled. A subgroup of them was given preoperative oral immunonutrition with Oral Impact® and was compared to those who received no preoperative supplementation...
October 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29022109/interaction-of-cd80-with-neph1-a-potential-mechanism-of-podocyte-injury
#9
Bhavya Khullar, Renu Balyan, Neelam Oswal, Nidhi Jain, Amita Sharma, Malik Z Abdin, Arvind Bagga, Shinjini Bhatnagar, Nitya Wadhwa, Uma Chandra Mouli Natchu, Anna George, Satyajit Rath, Vineeta Bal, Shailaja Sopory
BACKGROUND: The induction of CD80 on podocytes has been shown in animal models of podocyte injury and in certain cases of nephrotic syndrome. In a lipopolysaccharide (LPS)-induced mouse model of albuminuria, we have recently shown a signalling axis of LPS-myeloid cell activation-TNFα production-podocyte CD80 induction-albuminuria. Therefore, in this report, we investigated the cellular and molecular consequences of TNFα addition and CD80 expression on cultured podocytes. METHODS: A murine podocyte cell line was used for TNFα treatment and for over-expressing CD80...
October 11, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/29017604/il-17-differentiated-macrophages-secrete-pro-inflammatory-cytokines-in-response-to-oxidized-low-density-lipoprotein
#10
María de la Paz Sánchez-Martínez, Francisco Blanco-Favela, Mónica Daniela Mora-Ruiz, Adriana Karina Chávez-Rueda, Mariela Bernabe-García, Luis Chávez-Sánchez
BACKGROUND: Cytokines and macrophages play a central role in the development of atherosclerosis. Interleukin (IL)-17 is a pro-inflammatory cytokine with differential effects on innate immune cells. We investigated the effects of IL-17 on macrophage differentiation and foam cell formation and activation in response to oxidized low-density lipoprotein (oxLDL). METHODS: Human monocytes were treated with IL-17 to induce macrophage differentiation. As controls, human monocytes were differentiated into M1 macrophages (M1) or M2 macrophages (M2)...
October 10, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28988016/characterisation-of-the-immune-related-transcriptome-in-resected-biliary-tract-cancers
#11
Michele Ghidini, Luciano Cascione, Pietro Carotenuto, Andrea Lampis, Francesco Trevisani, Maria Chiara Previdi, Jens C Hahne, Ian Said-Huntingford, Maya Raj, Alessandro Zerbi, Claudia Mescoli, Umberto Cillo, Massimo Rugge, Massimo Roncalli, Guido Torzilli, Lorenza Rimassa, Armando Santoro, Nicola Valeri, Matteo Fassan, Chiara Braconi
Although biliary tract cancers (BTCs) are known to have an inflammatory component, a detailed characterisation of immune-related transcripts has never been performed. In these studies, nCounter PanCancer Immune Profiling Panel was used to assess the expression of 770 immune-related transcripts in the tumour tissues (TTs) and matched adjacent tissues (ATs) of resected BTCs. Cox regression analysis and Kaplan-Meier methods were used to correlate findings with relapse-free survival (RFS). The first analysis in the TT and AT of an exploratory set (n = 22) showed deregulation of 39 transcripts associated with T-cell activation...
October 5, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28987592/cathepsin-s-inhibition-suppresses-autoimmune-triggered-inflammatory-responses-in-macrophages
#12
Sophia Thanei, Michel Theron, Ana Patricia Silva, Bernhard Reis, Leonore Branco, Lucia Schirmbeck, Fabrice A Kolb, Wolfgang Haap, Thomas Schindler, Marten Trendelenburg
In several types of antigen-presenting cells (APCs), Cathepsin S (CatS) plays a crucial role in the regulation of MHC class II surface expression and consequently influences antigen (Ag) presentation of APCs to CD4(+) T cells. During the assembly of MHC class II-Ag peptide complexes, CatS cleaves the invariant chain p10 (Lip10) - a fragment of the MHC class II-associated invariant chain peptide. In this report, we used a selective, high-affinity CatS inhibitor to suppress the proteolytic activity of CatS in lymphoid and myeloid cells...
October 4, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28985996/tlr-induced-secretion-of-novel-cytokine-il-27-is-defective-in-newly-diagnosed-type-2-diabetic-subjects
#13
Haridoss Madhumitha, Viswanathan Mohan, Subash Babu, Vivekanandhan Aravindhan
Toll-like receptors (TLRs), the innate immune receptors, act as sentinels bridging both innate and adaptive arms of immunity. In the present study, we estimated TLR-induced secretion of IL-27, IL-12, IL-23, IL-8, IP-10, IL-17, IL-6 and TNF-α (by ELISA) and expression of Human Leukocyte Antigen- (Human Leukocyte Antigen - antigen D Related (HLA-DR), CD69, CD80 (also known asB7-1) (by flowcytometry) and Activating Transcription Factor 3(ATF3) (by qRT-PCR) in whole blood cultures of control and type-2 diabetic (both newly diagnosed/NDD and known/KDM) subjects...
October 3, 2017: Cytokine
https://www.readbyqxmd.com/read/28985848/transforming-growth-factor-%C3%AE-1-and-fas-ligand-synergistically-enhance-immune-tolerance-in-dendritic-cells-in-liver-transplantation
#14
Minglian Qiu, Yujuan Chen, Lihong Chen, Jinhua Zeng, Jingfeng Liu
BACKGROUND: Long-term survival of patients following liver transplantation can be achieved by application of genetically modified, immune tolerogenic immature dendritic cells (imDCs) to overcome allograft-induced acute cellular rejection, a major cause of death. In this study, using a rat model of liver transplantation, we determined whether cotransfection of transforming growth factor β1 (TGF-β1) and Fas ligand (FasL) in imDCs synergistically enhances immune tolerance. MATERIALS AND METHODS: We first determined the immune tolerogenic effects of TGF-β1 and FasL independently or together in imDCs by measuring the levels of CD86 and CD80 and by assessing T-cell proliferation using mixed lymphocyte reaction tests...
October 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28983597/mediating-macrophage-immunity-with-wogonin-in-mice-with-vascular-inflammation
#15
Jingwei Wang, Kunxia Li, Yupeng Li, Yulin Wang
Vascular inflammation may induce a number of diseases, including organ damage or failure, heart attack and stroke. The present study aimed to investigate the use of wogonin, a compound extracted from herbs, to mediate inflammatory reactions in vascular inflammation. Wogonin was loaded in a well‑characterized polymeric biomaterial carrier. In mice with streptozotocin‑induced vascular inflammation, wogonin treatment regulated the production of inflammatory cytokines, including interleukin‑6, tumor necrosis factor‑α and granulocyte macrophage colony‑stimulating factor...
September 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28979262/cd28-blockade-ex-vivo-induces-alloantigen-specific-immune-tolerance-but-preserves-t-cell-pathogen-reactivity
#16
Barbara Dillinger, Sarah Ahmadi-Erber, Klara Soukup, Angela Halfmann, Silke Schrom, Bernard Vanhove, Peter Steinberger, Rene Geyeregger, Stephan Ladisch, Alexander Michael Dohnal
Donor T-cells contribute to reconstitution of protective immunity after allogeneic hematopoietic stem cell transplantation (HSCT) but must acquire specific tolerance against recipient alloantigens to avoid life-threatening graft-versus-host disease (GvHD). Systemic immunosuppressive drugs may abrogate severe GvHD, but this also impedes memory responses to invading pathogens. Here, we tested whether ex vivo blockade of CD28 co-stimulation can enable selective T-cell tolerization to alloantigens by facilitating CD80/86-cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) signaling...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28979120/engineered-outer-membrane-vesicle-is-potent-to-elicit-hpv16e7-specific-cellular-immunity-in-a-mouse-model-of-tc-1-graft-tumor
#17
Shijie Wang, Weiwei Huang, Kui Li, Yufeng Yao, Xu Yang, Hongmei Bai, Wenjia Sun, Cunbao Liu, Yanbing Ma
PURPOSE: Currently, therapeutic tumor vaccines under development generally lack significant effects in human clinical trials. Exploring a powerful antigen delivery system is a potential approach to improve vaccine efficacy. We sought to explore engineered bacterial outer membrane vesicles (OMVs) as a new vaccine carrier for efficiently delivering tumor antigens and provoking robust antitumor immune responses. MATERIALS AND METHODS: First, the tumoral antigen human papillomavirus type 16 early protein E7 (HPV16E7) was presented on Escherichia coli-derived OMVs by genetic engineering methods, acquiring the recombinant OMV vaccine...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28978798/selective-blockade-of-cd28-on-human-t-cells-facilitates-regulation-of-alloimmune-responses
#18
Masaaki Zaitsu, Fadi Issa, Joanna Hester, Bernard Vanhove, Kathryn J Wood
T cells are central to the detrimental alloresponses that develop in autoimmunity and transplantation, with CD28 costimulatory signals being key to T cell activation and proliferation. CTLA4-Ig molecules that bind CD80/86 and inhibit CD28 costimulation offer an alternative immunosuppressive treatment, free from some of the chronic toxicities associated with calcineurin inhibition. However, CD80/86 blockade by CTLA4-Ig also results in the loss of coinhibitory CTLA4 signals that are critical to the regulation of T cell activation...
October 5, 2017: JCI Insight
https://www.readbyqxmd.com/read/28974324/in-silico-analysis-and-in-vitro-evaluation-of-immunogenic-and-immunomodulatory-properties-of-promiscuous-peptides-derived-from-leishmania-infantum-eukaryotic-initiation-factor
#19
Olga S Koutsoni, John G Routsias, Ioannis D Kyriazis, Mourad Barhoumi, Ikram Guizani, Athanassios Tsakris, Eleni Dotsika
It is generally considered as imperative the ability to control leishmaniasis through the development of a protective vaccine capable of inducing long-lasting and protective cell-mediated immune responses. In this current study, we demonstrated potential epitopes that bind to H2 MHC class I and II molecules by conducting the in silico analysis of Leishmania infantum eukaryotic Initiation Factor (LieIF) protein, using online available algorithms. Moreover, we synthesized five peptides (16-18 amino acids long) which are part of the N-terminal portion of LieIF and contain promising MHC class I and II-restricted epitopes and afterwards, their predicted immunogenicity was evaluated in vitro by monitoring peptide-specific T-cell responses...
July 8, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28973047/tlr3-is-required-for-survival-following-coxsackievirus-b3-infection-by-driving-t-lymphocyte-activation-and-polarization-the-role-of-dendritic-cells
#20
Renata Sesti-Costa, Marcela Cristina Santiago Françozo, Grace Kelly Silva, José Luiz Proenca-Modena, João Santana Silva
Type B coxsackievirus (CVB) is a common cause of acute and chronic myocarditis, meningitis and pancreatitis, often leading to heart failure and pancreatic deficiency. The polarization of CD4+ T lymphocytes and their cytokine milieu are key factors in the outcome of CVB-induced diseases. Thus, sensing the virus and driving the adaptive immune response are essential for the establishment of a protective immune response. TLR3 is a crucial virus recognition receptor that confers the host with resistance to CVB infection...
2017: PloS One
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