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https://www.readbyqxmd.com/read/28424693/human-melanoma-derived-extracellular-vesicles-regulate-dendritic-cell-maturation
#1
Rachel L G Maus, James W Jakub, Wendy K Nevala, Trace A Christensen, Klara Noble-Orcutt, Zohar Sachs, Tina J Hieken, Svetomir N Markovic
Evolution of melanoma from a primary tumor to widespread metastasis is crucially dependent on lymphatic spread. The mechanisms regulating the initial step in metastatic dissemination via regional lymph nodes remain largely unknown; however, evidence supporting the establishment of a pre-metastatic niche is evolving. We have previously described a dysfunctional immune profile including reduced expression of dendritic cell (DC) maturation markers in the first node draining from the primary tumor, the sentinel lymph node (SLN)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424285/equine-arteritis-virus-has-specific-tropism-for-stromal-cells-and-cd8-t-and-cd21-b-lymphocytes-but-not-glandular-epithelium-at-the-primary-site-of-persistent-infection-in-the-stallion-reproductive-tract
#2
Mariano Carossino, Alan T Loynachan, Igor F Canisso, R Frank Cook, Juliana R Campos, Bora Nam, Yun Young Go, Edward L Squires, Mats H T Troedsson, Thomas Swerczek, Fabio Del Piero, Ernest Bailey, Peter J Timoney, Udeni B R Balasuriya
Equine arteritis virus (EAV) has a global impact on the equine industry being the causative agent of equine viral arteritis (EVA), a respiratory, systemic, and reproductive disease of equids. A distinctive feature of EAV infection is that it establishes long-term persistent infection in 10 to 70% of infected stallions (carriers). In these stallions, EAV is only detectable in the reproductive tract and viral persistence occurs despite the presence of high serum neutralizing antibodies. Carrier stallions constitute the natural reservoir of the virus as they continuously shed EAV in their semen...
April 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28414181/myeloid-but-not-plasmacytoid-blood-dcs-possess-th1-polarizing-and-th1-th17-recruiting-capacity-in-psoriasis
#3
Ahmed Khasawneh, Sándor Baráth, Barbara Medgyesi, Gabriella Béke, Zsolt Dajnoki, Krisztián Gáspár, Adrienn Jenei, Lilla Pogácsás, Kitti Pázmándi, János Gaál, Attila Bácsi, Andrea Szegedi, Anikó Kapitány
Psoriasis is a common inflammatory skin disease and dendritic cells (DCs) play crucial role in the development of skin inflammation. Although the characteristics of skin DCs in psoriasis are well defined, less is known about their peripheral blood precursors. Our aim was to characterize the phenotypic features as well as the cytokine and chemokine production of CD1c(+) myeloid DCs (mDCs) and plasmacytoid DCs (pDCs) in the blood samples of psoriatic patients. Blood DCs were isolated by using a magnetic separation kit, and their intracytoplasmic cytokine production and CD83/CD86 maturation/activation marker expression were investigated by 8-colour flow cytometry...
April 13, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28408901/serine-rich-repeat-adhesins-contribute-to-streptococcus-gordonii-induced-maturation-of-human-dendritic-cells
#4
Eun Byeol Ko, Sun Kyung Kim, Ho Seong Seo, Cheol-Heui Yun, Seung Hyun Han
Dendritic cells (DCs) play a pivotal role in the induction of immunity by recognition, capture, process, and presentation of antigens from infectious microbes. Streptococcus gordonii is able to cause life-threatening systemic diseases such as infective endocarditis. Serine-rich repeat (SRR) glycoproteins of S. gordonii are sialic acid-binding adhesins mediating the bacterial adherence to the host and the development of infective endocarditis. Thus, the SRR adhesins are potentially involved in the bacterial adherence to DCs and the maturation and activation of DCs required for the induction of immunity to S...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28399967/type-1-polarised-dendritic-cells-are-a-potent-immunogen-against-mycobacterium-tuberculosis
#5
Y Satake, Y Nakamura, M Kono, H Hozumi, T Nagata, K Tsujimura, N Enomoto, T Fujisawa, N Inui, T Fujiyama, Y Tokura, T Matsui, K Yokomura, M Shirai, H Hayakawa, T Suda
OBJECTIVE: Application of immunotherapy using dendritic cells (DCs) is considered an effective treatment strategy against persistent Mycobacterium tuberculosis infection. With the goal of developing improved therapeutic vaccination strategies for patients with tuberculosis (TB), we tested the ability of ex vivo-generated DCs to induce an effective TB antigen-specific type-1 immune response. METHODS: Monocyte-derived DCs from TB patients were induced to mature using a 'standard' cytokine cocktail (interleukin [IL] 1β, tumour necrosis factor alpha [TNF-α], IL-6 and prostaglandin E2) or a type 1-polarised DC (DC1) cocktail (IL-1β, TNF-α, interferon [IFN] α, IFN-γ and polyinosinic:polycytidylic acid), and were loaded with the established TB antigen 6-kDa early secretory antigenic target protein (ESAT-6)...
May 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28396662/the-role-of-dendritic-cell-maturation-in-the-induction-of-insulin-dependent-diabetes-mellitus
#6
REVIEW
Jacques C Mbongue, Hector A Nieves, Timothy W Torrez, William H R Langridge
Dendritic cells (DCs) are the dominant class of antigen-presenting cells in humans and are largely responsible for the initiation and guidance of innate and adaptive immune responses involved in maintenance of immunological homeostasis. Immature dendritic cells (iDCs) phagocytize pathogens and toxic proteins and in endosomal vesicles degrade them into small fragments for presentation on major histocompatibility complex (MHC) II receptor molecules to naïve cognate T cells (Th0). In addition to their role in stimulation of immunity, DCs are involved in the induction and maintenance of immune tolerance toward self-antigens...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28395713/-immature-dendritic-cells-phagocytosing-human-spleen-cells-treated-by-puva-present-the-characteristics-of-regulatory-dendritic-cells
#7
Shaozhen Yang, Guosheng Du, Yuxiang Wei, Longlong Suo, Lin Zhou, Likui Feng, Jiyong Song, Zhidong Zhu, Yonggen Zheng
Objective To investigate the effect of psoralen combined with A-band ultraviolet (PUVA)-treated human spleen lymphocytes on the phenotype and function of immature dendritic cells (imDCs). Methods Human peripheral blood mononuclear cells (PBMCs) were isolated and induced to produce DCs by interleukin-4 (IL-4) and recombinant human granulocyte macrophage colony stimulating factor (rhGM-CSF). On the sixth day, the imDCs were obtained and stimulated by lipopolysaccharide (LPS). One day later, mature DCs were harvested...
April 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28368498/the-antigen-presenting-potential-of-v%C3%AE-9v%C3%AE-2-t-cells-during-plasmodium-falciparum-blood-stage-infection
#8
Jennifer Howard, Séverine Loizon, Christopher J Tyler, Dorothée Duluc, Bernhard Moser, Matthieu Mechain, Alexandre Duvignaud, Denis Malvy, Marita Troye-Blomberg, Jean-Francois Moreau, Matthias Eberl, Odile Mercereau-Puijalon, Julie Déchanet-Merville, Charlotte Behr, Maria Mamani-Matsuda
During Plasmodium falciparum infections, erythrocyte-stage parasites inhibit dendritic cell maturation and function; compromising development of effective anti-malarial adaptive immunity. Human Vγ9Vδ2 T-cells can act in vitro as APCs and induce αβ T-cell activation. However, the relevance of this activity in pathophysiological contexts in vivo has remained elusive. Since Vγ9Vδ2 T-cells are activated during the early immune response against P.falciparum infection, we investigated whether they could contribute to the instruction of adaptive immune responses toward malaria parasites...
March 27, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28341814/the-effect-of-monophosphoryl-lipid-a-on-maturation-of-dcs-from-patients-with-acute-myeloid-leukaemia
#9
COMPARATIVE STUDY
Noha Mohamed El Husseiny, Walaa Abd El Fattah Attya Elkak, Mervat Said El Ansary, Engy Mohamed Abd El Aziz El Khateeb, Mervat Wagih Mattar, Doaa Mohamed El Demerdash
BACKGROUND: Generation of monocyte-derived dendritic cells (MDDC) is induced in the presence of GM-CSF and IL-4, and a maturation stimulus is added to the monocyte culture to obtain mature Dendritic Cells (DCs) suitable for therapy. TNF-α is the most common cytokine used for activating DCs and generating mature MDDC either alone or in combination with other cytokines. OBJECTIVE: To compare effects of traditional cytokine cocktail (TNF-α + IL-1β) versus TLR4-agonist monophosphoryl lipid A on the viability, phenotype, cytokine profile and functionality of MDDC...
March 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28337868/inflammation-in-lung-after-acute-myocardial-infarction-is-induced-by-dendritic-cell-mediated-immune-response
#10
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
#11
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
#12
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 its function on dendritic cells and additional immune cells...
March 15, 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
#13
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
#14
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...
April 19, 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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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