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https://www.readbyqxmd.com/read/28550754/linear-polysialoside-outperforms-dendritic-analogs-for-inhibition-of-influenza-virus-infection-in%C3%A2-vitro-and-in%C3%A2-vivo
#1
Sumati Bhatia, Daniel Lauster, Markus Bardua, Kai Ludwig, Stefano Angioletti-Uberti, Nicole Popp, Ute Hoffmann, Florian Paulus, Matthias Budt, Marlena Stadtmüller, Thorsten Wolff, Alf Hamann, Christoph Böttcher, Andreas Herrmann, Rainer Haag
Inhibition of influenza A virus infection by multivalent sialic acid inhibitors preventing viral hemagglutinin binding to host cells of the respiratory tract is a promising strategy. However, optimal geometry and optimal ligand presentation on multivalent scaffolds for efficient inhibition both in vitro and in vivo application are still unclear. Here, by comparing linear and dendritic polyglycerol sialosides (LPGSA and dPGSA) we identified architectural requirements and optimal ligand densities for an efficient multivalent inhibitor of influenza virus A/X31/1 (H3N2)...
May 20, 2017: Biomaterials
https://www.readbyqxmd.com/read/28550730/transplantation-of-aire-overexpressing-bone-marrow-derived-dendritic-cells-delays-the-onset-of-type-1-diabetes
#2
Dongbei Li, Bo Zhao, Yadong Luo, Steven Limbara, Bingjie Zhao, Xueyang Zou, Wei Yang, Yi Li
Autoimmune regulator (Aire) plays an indispensable role in maintaining central immune tolerance by promoting the ectopic expression of tissue-restricted antigens (TRAs) in medullary thymic epithelial cells (mTECs) and dendritic cells (DCs), which lead to the deletion of autoreactive T cells or the induction of Tregs and consequently prevent autoimmune disease development. Curing autoimmune diseases has always been a challenge. DC-based immunotherapy represents a new and effective method to establish tolerance...
May 24, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28550204/cutting-edge-origins-recruitment-and-regulation-of-cd11c-cells-in-inflamed-islets-of-autoimmune-diabetes-mice
#3
Joanna E Klementowicz, Ashley E Mahne, Allyson Spence, Vinh Nguyen, Ansuman T Satpathy, Kenneth M Murphy, Qizhi Tang
In NOD mice, CD11c(+) cells increase greatly with islet inflammation and contribute to autoimmune destruction of pancreatic β cells. In this study, we investigated their origin and mechanism of recruitment. CD11c(+) cells in inflamed islets resembled classical dendritic cells based on their transcriptional profile. However, the majority of these cells were not from the Zbtb46-dependent dendritic-cell lineage. Instead, monocyte precursors could give rise to CD11c(+) cells in inflamed islets. Chemokines Ccl5 and Ccl8 were persistently elevated in inflamed islets and the influx of CD11c(+) cells was partially dependent on their receptor Ccr5...
May 26, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28550053/batf3-dendritic-cells-drive-adoptive-effector-t-cell-trafficking
#4
(no author information available yet)
Trafficking of adoptively transferred effector T cells requires CD103(+) dendritic cell-derived CXCL9/10.
May 26, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28549917/dendritic-cell-derived-exosomes-elicit-tumor-regression-in-autochthonous-hepatocellular-carcinoma-mouse-models
#5
Zhen Lu, Bingfeng Zuo, Renwei Jing, Xianjun Gao, Quan Rao, Zhili Liu, Han Qi, Hongxing Guo, HaiFang Yin
BACKGROUND & AIMS: Dendritic cell (DC)-derived exosomes (DEXs) form a new class of vaccines for cancer immunotherapy. However their potency in hepatocellular carcinoma (HCC), a life-threatening malignancy with limited treatment options in the clinic and responds poorly to immunotherapy, remains to be investigated. METHODS: Exosomes derived from α-fetoprotein (AFP) - expressing DCs (DEXAFP) were investigated in three different HCC mouse models systemically and tumor growth and microenvironment were monitored...
May 23, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28549853/molecular-fingerprinting-of-principal-neurons-in-the-rodent-hippocampus-a-neuroinformatics-approach
#6
D J Hamilton, C M White, C L Rees, D W Wheeler, G A Ascoli
Neurons are often classified by their morphological and molecular properties. The online knowledge base Hippocampome.org primarily defines neuron types from the rodent hippocampal formation based on their main neurotransmitter (glutamate or GABA) and the spatial distributions of their axons and dendrites. For each neuron type, this open-access resource reports any and all published information regarding the presence or absence of known molecular markers, including calcium-binding proteins, neuropeptides, receptors, channels, transcription factors, and other molecules of biomedical relevance...
April 29, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28549432/dendritic-cells-combined-with-tumor-cells-and-%C3%AE-galactosylceramide-induce-a-potent-therapeutic-and-nk-cell-dependent-antitumor-immunity-in-b-cell-lymphoma
#7
Laura Escribà-Garcia, Carmen Alvarez-Fernández, Marta Tellez-Gabriel, Jorge Sierra, Javier Briones
BACKGROUND: Invariant natural killer T (iNKT) cells are a small population of lymphocytes with unique specificity for glycolipid antigens presented by non-polymorphic CD1d receptor on dendritic cells (DCs). iNKT cells play a central role in tumor immunology since they are implicated in the coordination of innate and adaptive immune responses. These cells can be activated with the prototypic lipid α-galactosylceramide (α-GalCer), stimulating interferon gamma (IFN-γ) production and cytokine secretion, which contribute to the enhancement of T cell activation...
May 26, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28549038/use-of-smooth-muscle-myosin-heavy-chain-as-an-effective-marker-of-follicular-dendritic-cells
#8
Ioannis Ioannidis, Javier A Laurini
Smooth muscle myosin heavy chain (SMMHC) is a major structural component of the contractile apparatus in smooth muscle cells. Even though it is considered a relatively specific marker for terminal smooth muscle cell differentiation, expression in other cell types such as follicular dendritic cells (FDCs) has rarely been reported. To determine whether SMMHC represents an effective FDC marker in lymphoid tissues, we compared the immunohistochemical results for SMMHC with those of the traditional FDC markers podoplanin (D2-40) and CD21...
May 25, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28548949/dietary-grape-seed-proanthocyanidins-inactivate-regulatory-t-cells-by-promoting-ner-dependent-dna-repair-in-dendritic-cells-in-uvb-exposed-skin
#9
Mudit Vaid, Ram Prasad, Tripti Singh, Santosh K Katiyar
Ultraviolet B (UVB) radiation induces regulatory T cells (Treg cells) and depletion of these Treg cells alleviates immunosuppression and inhibits photocarcinogenesis in mice. Here, we determined the effects of dietary grape seed proanthocyanidins (GSPs) on the development and activity of UVB-induced Treg cells. C3H/HeN mice fed a GSPs (0.5%, w/w)-supplemented or control diet were exposed to UVB (150 mJ/cm2) radiation, sensitized to 2,4-dinitrofluorobenzene (DNFB) and sacrificed 5 days later. FACS analysis indicated that dietary GSPs decrease the numbers of UVB-induced Treg cells...
May 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548102/replicating-viral-vector-platform-exploits-alarmin-signals-for-potent-cd8-t-cell-mediated-tumour-immunotherapy
#10
Sandra M Kallert, Stephanie Darbre, Weldy V Bonilla, Mario Kreutzfeldt, Nicolas Page, Philipp Müller, Matthias Kreuzaler, Min Lu, Stéphanie Favre, Florian Kreppel, Max Löhning, Sanjiv A Luther, Alfred Zippelius, Doron Merkler, Daniel D Pinschewer
Viral infections lead to alarmin release and elicit potent cytotoxic effector T lymphocyte (CTL(eff)) responses. Conversely, the induction of protective tumour-specific CTL(eff) and their recruitment into the tumour remain challenging tasks. Here we show that lymphocytic choriomeningitis virus (LCMV) can be engineered to serve as a replication competent, stably-attenuated immunotherapy vector (artLCMV). artLCMV delivers tumour-associated antigens to dendritic cells for efficient CTL priming. Unlike replication-deficient vectors, artLCMV targets also lymphoid tissue stroma cells expressing the alarmin interleukin-33...
May 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28548038/marek-s-disease-virus-infection-of-phagocytes-a-de-novo-in-vitro-infection-model
#11
Pankaj Chakraborty, Lonneke Vervelde, Robert G Dalziel, Peter S Wasson, Venugopal Nair, Bernadette M Dutia, Pete Kaiser
Marek's disease virus (MDV) is an alphaherpesvirus that induces T-cell lymphomas in chickens. Natural infections in vivo are caused by the inhalation of infected poultry house dust and it is presumed that MDV infection is initiated in the macrophages from where the infection is passed to B cells and activated T cells. Virus can be detected in B and T cells and macrophages in vivo, and both B and T cells can be infected in vitro. However, attempts to infect macrophages in vitro have not been successful. The aim of this study was to develop a model for infecting phagocytes [macrophages and dendritic cells (DCs)] with MDV in vitro and to characterize the infected cells...
May 26, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28547979/association-of-infiltrating-cells-with-microvessel-density-in-oral-squamous-cell-carcinoma
#12
Olga Stasikowska-Kanicka, Małgorzata Wągrowska-Danilewicz, Marian Danilewicz
Several lines of evidence indicate that immune cells in the tumor microenvironment play an important role in regulating tumor progression. An immunohistochemical method was used to examine the abundance of natural killer (NK) cells, mucosal dendritic cells (DCs), macrophages, mast cells, and microvessel density in 78 cases of oral squamous cell carcinoma (OSCC): with better prognosis - OSCCBP (n = 37), and with poorer prognosis - OSCCPP (n = 41), and 18 controls. The mean numbers of macrophages and microvessels were significantly higher in the OSCCPP group in comparison to both OSCCBP and control groups...
2017: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
https://www.readbyqxmd.com/read/28547795/synaptogenesis-and-synaptic-protein-localization-in-the-postnatal-development-of-rod-bipolar-cell-dendrites-in-mouse-retina
#13
Zvan A Anastassov, Weiwei Wang, Felice A Dunn
Retinal responses to photons originate in rod photoreceptors and are transmitted to the ganglion cell output of the retina through the primary rod bipolar pathway. At the first synapse of this pathway, input from multiple rods is pooled into individual rod bipolar cells. This architecture is called convergence. Convergence serves to improve sensitivity of rod vision when photons are sparse. Establishment of convergence depends on the development of a proper complement of dendritic tips and transduction proteins in rod bipolar cells...
May 25, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28547531/neonatal-hyperoxia-perturbs-neuronal-development-in-the-cerebellum
#14
Till Scheuer, Yuliya Sharkovska, Victor Tarabykin, Katharina Marggraf, Vivien Brockmöller, Christoph Bührer, Stefanie Endesfelder, Thomas Schmitz
Impaired postnatal brain development of preterm infants often results in neurological deficits. Besides pathologies of the forebrain, maldeveolopment of the cerebellum is increasingly recognized to contribute to psychomotor impairments of many former preterm infants. However, causes are poorly defined. We used a hyperoxia model to define neonatal damage in cerebellar granule cell precursors (GCPs) and in Purkinje cells (PCs) known to be essential for interaction with GCPs during development. We exposed newborn rats to 24 h 80% O2 from age P6 to P7 to identify postnatal and long-term damage in cerebellar GCPs at age P7 after hyperoxia and also after recovery in room air thereafter until P11 and P30...
May 25, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28547076/purinergic-signaling-during-intestinal-inflammation
#15
REVIEW
Maria Serena Longhi, Alan Moss, Zhenghui Gordon Jiang, Simon C Robson
Inflammatory bowel disease (IBD) is a devastating disease that is associated with excessive inflammation in the intestinal tract in genetically susceptible individuals and potentially triggered by microbial dysbiosis. This illness markedly predisposes patients to thrombophilia and chronic debility as well as bowel, lymphatic, and liver cancers. Development of new therapies is needed to re-establish long-term immune tolerance in IBD patients without increasing the risk of opportunistic infections and cancer...
May 26, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28546715/unusual-histology-in-hodgkin-s-lymphoma-report-of-an-interesting-case
#16
Sujata Jetley, Shaan Khetrapal, Mukta Pujani, Mohd Jaseem Hassan, Abhinav Jain
Hodgkin's lymphoma has a significant presence in the Indian subcontinent. Microscopically, the hallmark of Hodgkin's lymphoma (HL) is the Hodgkin and Reed-Sternberg (HRS) cell, which is usually surrounded by a cellular infiltrate of non-malignant inflammatory cells that constitute the majority of the tumor tissue. Cells which are known to be histologic mimics of HRS cells include immunoblasts, plasmablasts and rarely dendritic cells. We report a case of a 70-year-old male who presented with fever and lymphadenopathy...
June 2017: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28545760/identification-of-synaptic-pattern-of-nmda-receptor-subunits-upon-direction-selective-retinal-ganglion-cells-in-developing-and-adult-mouse-retina
#17
Jun-Seok Lee, Hang-Gu Kim, Chang-Jin Jeon
Direction selectivity of the retina is a unique mechanism and critical function of eyes for surviving. Direction-selective retinal ganglion cells (DS RGCs) strongly respond to preferred directional stimuli, but rarely respond to the opposite or null directional stimuli. These DS RGCs are sensitive to glutamate, which is secreted from bipolar cells. Using immunocytochemistry, we studied with the distributions of N-methyl-d-aspartate (NMDA) receptor subunits on the dendrites of DS RGCs in the developing and adult mouse retina...
May 22, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28545678/rapid-synaptogenesis-in-the-nucleus-accumbens-is-induced-by-a-single-cocaine-administration-and-stabilized-by-mitogen-activated-protein-kinase-interacting-kinase-1-activity
#18
Marc Dos Santos, Marine Salery, Benoit Forget, Maria Alexandra Garcia Perez, Sandrine Betuing, Thomas Boudier, Peter Vanhoutte, Jocelyne Caboche, Nicolas Heck
BACKGROUND: Repeated cocaine exposure produces new spine formation in striatal projection neurons (SPNs) of the nucleus accumbens. However, an acute exposure to cocaine can trigger long-lasting synaptic plasticity in SPNs leading to behavioral alterations. This raises the intriguing question as to whether a single administration of cocaine could enduringly modify striatal connectivity. METHODS: A three-dimensional morphometric analysis of presynaptic glutamatergic boutons and dendritic spines was performed on SPNs 1 hour and 1 week after a single cocaine administration...
March 29, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28545157/the-aminoestrogen-prolame-increases-recognition-memory-and-hippocampal-neuronal-spine-density-in-aged-mice
#19
Alfonso Diaz, Samuel Treviño, Rubén Vázquez-Roque, Berenice Venegas, Blanca Espinosa, Gonzalo Flores, Juan Manuel Fernández-G, Luis F Montaño, Jorge Guevara
The aging brain shows biochemical and morphological changes in the dendrites of pyramidal neurons from the limbic system associated with memory loss. Prolame (N-(3-hydroxy-1,3,5 (10) -estratrien-17β-yl) -3-hydroxypropylamine) is a non-feminizing aminoestrogen with antithrombotic activity that prevents neuronal deterioration, oxidative stress and neuroinflammation. Our aim was to evaluate the effect of prolame on motor and cognitive processes, as well as its influence on the dendritic morphology of neurons at the CA1, CA3 and granule cells of the dentate gyrus (DG) regions of hippocampus (HP), and medium spiny neurons of the nucleus accumbens (NAcc) of aged mice...
May 25, 2017: Synapse
https://www.readbyqxmd.com/read/28545032/endoplasmic-reticulum-stress-mediated-membrane-expression-of-crt-erp57-induces-immunogenic-apoptosis-in-drug-resistant-endometrial-cancer-cells
#20
Qin Xu, Chuanben Chen, An Lin, Yunqing Xie
OBJECTIVE: To investigate the role of endoplasmic reticulum (ER) stress-mediated CRT/ERp57 complex expression underlying the mechanism of resistance to doxorubicin (DOX) in endometrial carcinoma (EC) in vivo and in vitro. METHODS: The expression of CRT, ERp57, p-PERK, eIF2α, p-eIF2α in EC patients and EC cells was detected by Western blots and by immunofluorescence assay. MTT assay was used to determine the LC50 of EC cells to DOX and cell viability. Apoptosis was assayed using flow cytometer...
May 8, 2017: Oncotarget
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