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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/29044495/urban-particulate-matter-stimulation-of-human-dendritic-cells-enhances-priming-of-na%C3%A3-ve-cd8-t-lymphocytes
#2
Paul E Pfeffer, Tzer R Ho, Elizabeth H Mann, Frank J Kelly, Maria Sehlstedt, Jamshid Pourazar, Rosamund E Dove, Thomas Sandstrom, Ian S Mudway, Catherine M Hawrylowicz
Epidemiological studies have consistently shown associations between elevated concentrations of urban particulate matter (UPM) air pollution and exacerbations of asthma and COPD, which are both associated with viral respiratory infections. The effects of urban PM on dendritic cell (DC) stimulated CD4 T lymphocytes have been investigated previously, however little work has focused on CD8 T lymphocyte responses despite their importance in anti-viral immunity. To address this, we examined the effects of UPM on DC-stimulated naïve CD8 T cell responses...
October 16, 2017: Immunology
https://www.readbyqxmd.com/read/29038541/nk-cells-are-negatively-regulated-by-scd83-in-experimental-autoimmune-uveitis
#3
Wei Lin, Xuejing Man, Peng Li, Nannan Song, Yingying Yue, Bingqing Li, Yuanbin Li, Yufei Sun, Qiang Fu
Natural killer (NK) cells represent a subset of lymphocytes that contribute to innate immunity and have been reported to play a role in autoimmune uveitis. However, the mechanisms regulating NK cellular function in this condition remain unclear. Herein, we investigated the status of NK cells in experimental autoimmune uveitis (EAU). We found that the number of CD83(+)CD3(-)NK1.1(+) cells was increased in the inflamed eyes and spleens of the EAU mouse model. At the recovery stage of EAU, serum concentrations of soluble CD83 (sCD83) were increased...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29023924/decreased-peritumoral-cd1a-cells-predicts-worse-prognosis-in-oral-squamous-cell-carcinoma
#4
Juscelino Freitas Jardim, Rogério Gondak, Marisol Miranda Galvis, Clovis Antonio Lopes Pinto, Luiz Paulo Kowalski
BACKGROUND: Dendritic cells (DCs) are known to play a central role in the regulation of both innate and adaptive immunologic responses, including antitumor immunity. This study aimed to evaluate the prognostic impact of intra and peritumoral dendritic cells in oral squamous cell carcinoma (OSCC) affecting tongue and floor of the mouth. PATIENTS AND METHODS: Immunohistochemical reactions for CD1a and CD83 were performed in 53 patients with OSCC in tongue and floor of the mouth...
October 11, 2017: Histopathology
https://www.readbyqxmd.com/read/28993459/acquired-protective-immunity-in-atlantic-salmon-salmo-salar-against-the-myxozoan-kudoa-thyrsites-involves-induction-of-mhii%C3%AE-cd83-antigen-presenting-cells
#5
Laura M Braden, Karina J Rasmussen, Sara L Purcell, Lauren Ellis, Amelia Mahony, Steven Cho, Shona K Whyte, Simon R M Jones, Mark D Fast
The histozoic myxozoan parasite Kudoa thyrsites causes post-mortem myoliquefaction and is responsible for economic losses to salmon aquaculture in the Pacific Northwest. Despite its importance, little is known about the host-parasite relationship, including the host response to infection. The present work sought to characterize the immune response in Atlantic salmon during infection, recovery and re-exposure to K. thyrsites After exposure to infective seawater, infected and uninfected smolts were sampled three times over 4275 degree-days...
October 9, 2017: Infection and Immunity
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
#6
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/28960351/a-practical-approach-to-assess-inhalation-toxicity-of-metal-oxide-nanoparticles-in-vitro
#7
Anita C A Dankers, C Frieke Kuper, Anja J Boumeester, Babs O Fabriek, Ingeborg M Kooter, Mariska Gröllers-Mulderij, Peter Tromp, Inge Nelissen, Esther K Zondervan-Van Den Beuken, Rob J Vandebriel
Exposure of humans to metal oxide nanoparticles (NPs) occurs mainly via air, and inhaled metal oxide NPs may generate inflammation. The aim of this study was to investigate the proinflammatory potential of six metal oxide NPs (CeO2 , Mn2 O3 , CuO, ZnO, Co3 O4 and WO3 ; 27-108 μg ml(-1) ) using human primary 3-dimensional airway epithelium (MucilAir™) and dendritic cell (DC) models. Metal oxide NPs were mainly aggregated/agglomerated in the cell media, as determined by dynamic light scattering, scanning electron microscopy and differential centrifugal sedimentation...
September 28, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28944895/comparison-of-morphology-phenotypes-and-function-between-cultured-human-il%C3%A2-4%C3%A2-dc-and-ifn%C3%A2-dc
#8
Zhiliang Jin, Jing Fan, Yajuan Zhang, Yongxiang Yi, Lili Wang, Dandan Yin, Tao Deng, Wei Ye
Dendritic cells (DCs) as professional antigen presenting cells, are important in the initiation of the primary immune response. The present study compared the morphology, phenotypes and function between monocyte‑derived human DCs produced from a conventional culturing system containing granulocyte‑macrophage colony‑stimulating factor (GM‑CSF) and IL‑4 (IL‑4‑DC) and DCs generated by the stimulation of GM‑CSF and interferon (IFN)‑α (IFN‑DC). When compared with IL‑4‑DC in morphology, IFN‑DC contained more organelles, including endoplasmic reticulum and myelin figures, whereas mature (m)IL‑4‑DC contained more vacuoles in the cells...
September 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28941582/characterization-of-reconstructed-human-skin-containing-langerhans-cells-to-monitor-molecular-events-in-skin-sensitization
#9
Stephanie Bock, André Said, Gerrit Müller, Monika Schäfer-Korting, Christian Zoschke, Günther Weindl
Human cell-based approaches to assess defined key events in allergic contact dermatitis (ACD) are well-established, but lack cutaneous penetration and biotransformation as well as cellular cross-talk. Herein, we integrated in vitro-generated immature MUTZ-3-derived Langerhans-like cells (MUTZ-LCs) or monocyte-derived LC-like cells (MoLCs) into reconstructed human skin (RHS), consistent of a stratified epidermis formed by primary keratinocytes on a dermal compartment with collagen-embedded primary fibroblasts...
September 21, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28941322/stromal-cell-derived-factor-1-mediates-cardiac-allograft-tolerance-induced-by-human-endometrial-regenerative-cell-based-therapy
#10
Xu Lan, Grace Wang, Xiaoxi Xu, Shanzheng Lu, Xiang Li, Baoren Zhang, Ganggang Shi, Yiming Zhao, Caigan Du, Hao Wang
Endometrial regenerative cells (ERCs) are mesenchymal-like stromal cells, and their therapeutic potential has been tested in the prevention of renal ischemic reperfusion injury, acute liver injury, ulcerative colitis, and immunosuppression. However, their potential in the induction of transplant tolerance has not been investigated. The present study was undertaken to investigate the efficacy of ERCs in inducing cardiac allograft tolerance and the function of stromal cell-derived factor-1 (SDF-1) in the ERC-mediated immunoregulation...
September 23, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28921552/immunomodulatory-effect-of-cryopreserved-platelets-altered-bdca3-dendritic-cell-maturation-and-activation-in-vitro
#11
Katrina K Ki, Lacey Johnson, Helen M Faddy, Robert L Flower, Denese C Marks, Melinda M Dean
BACKGROUND: Cryopreservation of platelets (PLTs) is useful in remote areas to overcome logistic problems associated with supply and can extend the shelf life to 2 years. During cryopreservation, properties of PLTs are modified. Whether changes in the cryopreserved PLT (CPP) product are associated with modulation of recipients' immune function is unknown. We aimed to characterize the immune profile of myeloid dendritic cells (mDCs) and the specialized blood DC antigen (BDCA)3(+) subset after exposure to CPPs...
September 16, 2017: Transfusion
https://www.readbyqxmd.com/read/28916224/lack-of-differences-in-radiation-induced-immunogenicity-parameters-between-hpv-positive-and-hpv-negative-human-hnscc-cell-lines
#12
Karolin Schneider, Vanesa Bol, Vincent Grégoire
BACKGROUND AND PURPOSE: Clinical studies indicate that patients with HPV/p16-associated head & neck squamous cell carcinoma (HNSCC) represent a subgroup with a better prognosis and improved response to conventional radiotherapy. Involvement of immune-based factors has been hypothesized. In the present study, we investigated radiation-induced differences in release of damage associated molecular patterns (DAMPs), cytokines and activation of dendritic cells (DCs) in HPV-positive and negative HNSCC cancer cell lines...
September 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28913366/the-differential-contribution-of-the-innate-immune-system-to-a-good-pathological-response-in-the-breast-and-axillary-lymph-nodes-induced-by-neoadjuvant-chemotherapy-in-women-with-large-and-locally-advanced-breast-cancers
#13
Viriya Kaewkangsadan, Chandan Verma, Jennifer M Eremin, Gerard Cowley, Mohammad Ilyas, Sukchai Satthaporn, Oleg Eremin
The tumour microenvironment consists of malignant cells, stroma, and immune cells. The role of adaptive immunity in inducing a pathological complete response (pCR) in breast cancer with neoadjuvant chemotherapy (NAC) is well studied. The contribution of innate immunity, however, is poorly documented. Breast tumours and axillary lymph nodes (ALNs) from 33 women with large and locally advanced breast cancers (LLABCs) undergoing NAC were immunohistochemically assessed for tumour-infiltrating macrophages (TIMs: M1 and M2), neutrophils (TINs), and dendritic cells (TIDCs) using labelled antibodies and semiquantitative methods...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28893602/raltegravir-blocks-the-infectivity-of-red-fluorescent-protein-mcherry-labeled-hiv-1jr-fl-in-the-setting-of-post-exposure-prophylaxis-in-nod-scid-jak3-mice-transplanted-with-human-pbmcs
#14
Hiromi Ogata-Aoki, Nobuyo Higashi-Kuwata, Shin-Ichiro Hattori, Hironori Hayashi, Matthew Danish, Manabu Aoki, Chiemi Shiotsu, Yumi Hashiguchi, Akinobu Hamada, Hisataka Kobayashi, Hironobu Ihn, Seiji Okada, Hiroaki Mitsuya
Employing NOD/SCID/Jak3(-/-) mice transplanted with human PBMCs (hNOJ mice) and replication-competent, red-fluorescent-protein (mCherry; mC)-labeled HIV-1JR-FL (HIVmC), we examined whether early antiretroviral treatment blocked the establishment of HIV-1 infection. The use of hNOJ mice and HIVmC enabled us to visually locate infection foci and to examine the early dynamics of HIVmC infection without using a large amount of antiretroviral unlike in non-human primate models. Although when raltegravir (RAL) administration was begun 1 day after intraperitoneal (ip) inoculation of HIVmC, no plasma p24 or plasma HIV-1-RNA (pRNA) were detected in 10 of 12 hNOJ (hNOJmC(RAL+)) mice over 14-day observation, all 10 untreated hNOJmC (hNOJmC(RAL-)) mice became positive for p24 and pRNA and had significantly swollen lymph nodes in peritoneal cavity and abundant p24(+)/mC(+)/CD3(+)/CD4(+) T cells and p24(+)/mC(+)/CD68(+) monocytes/macrophages were identified in their omenta and mesenteric lymphoid tissues/lymph nodes...
September 8, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28889065/profiling-dendritic-cell-subsets-in-the-patients-with-active-pulmonary-tuberculosis
#15
Yuan-Bin Lu, De-Qian Xiao, Kui-Di Liang, Jun-Ai Zhang, Wan-Dang Wang, Shi-Yan Yu, Bi-Ying Zheng, Yu-Chi Gao, You-Chao Dai, Yan Jia, Chen Chen, Ze-Gang Zhuang, Xin Wang, Xiao-Xia Fu, Yong Zhou, Jixin Zhong, Zheng W Chen, Jun-Fa Xu
Dendritic cell (DC) plays an important role in the immune response against pulmonary tuberculosis. However, the phenotypic profile of DC subsets in peripheral blood in individuals with active pulmonary tuberculosis (APT) is still inconclusive. Here, we demonstrated that the absolute numbers of total DC (tDC), myeloid DC (mDC) and plasmacytoid DC (pDC) in individuals with APT were decreased compared to healthy controls (HCs). The decreased number of DCs, especially of pDC, seems to be a useful diagnostic marker of APT...
September 7, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28878289/persistence-within-dendritic-cells-marks-an-antifungal-evasion-and-dissemination-strategy-of-aspergillus-terreus
#16
Shih-Hung Hsieh, Oliver Kurzai, Matthias Brock
Aspergillus terreus is an airborne human fungal pathogen causing life-threatening invasive aspergillosis in immunocompromised patients. In contrast to Aspergillus fumigatus, A. terreus infections are associated with high dissemination rates and poor response to antifungal treatment. Here, we compared the interaction of conidia from both fungal species with MUTZ-3-derived dendritic cells (DCs). After phagocytosis, A. fumigatus conidia rapidly escaped from DCs, whereas A. terreus conidia remained persisting with long-term survival...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28853313/immunomodulatory-effects-of-heat-killed-mycobacterium-obuense-on-human-blood-dendritic-cells
#17
Samer Bazzi, Helmout Modjtahedi, Satvinder Mudan, Marcel Achkar, Charles Akle, Georges M Bahr
Heat-killed (HK) Mycobacterium obuense is a novel immunomodulator, currently undergoing clinical evaluation as an immunotherapeutic agent in the treatment of cancer. Here, we examined the effect of in vitro exposure to HK M. obuense on the expression of different categories of surface receptors on human blood myeloid (m) and plasmacytoid (p) DCs. Moreover, we have characterized the cytokine and chemokine secretion patterns of purified total blood DCs stimulated with HK M. obuense. HK M. obuense significantly up-regulated the expression of CD11c, CD80, CD83, CD86, CD274 and MHC class II in whole-blood mDCs and CD80, CD123 and MHC class II in whole-blood pDCs...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/28846748/plasmacytoid-dendritic-cells-and-rna-containing-immune-complexes-drive-expansion-of-peripheral-b-cell-subsets-with-an-sle-like-phenotype
#18
Olof Berggren, Niklas Hagberg, Andrei Alexsson, Gert Weber, Lars Rönnblom, Maija-Leena Eloranta
BACKGROUND: Hyperactive B cells and a continuous interferon (IFN)-α production by plasmacytoid dendritic cells (pDCs) play a key role in systemic lupus erythematosus (SLE). We asked whether the interaction between B cells and pDCs stimulated with RNA-containing immune complexes affects peripheral B cell subsets. METHODS: B cells and pDCs were isolated from blood of healthy individuals and stimulated with immune complexes consisting of SLE-IgG and U1snRNP (RNA-IC)...
2017: PloS One
https://www.readbyqxmd.com/read/28835358/combined-action-of-human-commensal-bacteria-and-amorphous-silica-nanoparticles-on-the-viability-and-immune-responses-of-dendritic-cells
#19
Giulia Malachin, Elisa Lubian, Fabrizio Mancin, Emanuele Papini, Regina Tavano
Dendritic cells (DCs) regulate the host-microbe balance in the gut and skin, tissues likely exposed to nanoparticles (NPs) present in drugs, food, and cosmetics. We analyzed the viability and the activation of DCs incubated with extracellular media (EMs) obtained from cultures of commensal bacteria (Escherichia coli, Staphylococcus epidermidis) or pathogenic bacteria (Pseudomonas aeruginosa, Staphylococcus aureus) in the presence of amorphous silica nanoparticles (SiO2 NPs). EMs and NPs synergistically increased the levels of cytotoxicity and cytokine production, with different nanoparticle dose-response characteristics being found, depending on the bacterial species...
October 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28810601/comparative-study-of-dendritic-cells-matured-by-using-il-1%C3%AE-il-6-tnf-%C3%AE-and-prostaglandins-e2-for-different-time-span
#20
Xuejie Wu, Feng Xu, Jinliang Liu, Guiqiang Wang
Interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α and prostaglandins E2 is considered as the standard cocktail for maturing dendritic cells (DCs). However, the appropriate time span for DC maturation with the standard cocktail remains unclear. The present study aimed to compare the differences between DCs matured with the standard cocktail for 24 and 48 h, respectively, and determine whether 24-h stimulation was sufficient for DC maturation. The findings demonstrated that, compared with DCs matured for 48 h, the levels of cluster of differentiation (CD)80, CD83, CD86 and programmed death-ligand 1 expression in DCs matured for 24 h were relatively lower...
August 2017: Experimental and Therapeutic Medicine
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