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https://www.readbyqxmd.com/read/29777026/endosomal-tlr3-tlr7-and-tlr8-control-neuronal-morphology-through-different-transcriptional-programs
#1
Yun-Fen Hung, Chiung-Ya Chen, Yi-Chun Shih, Hsin-Yu Liu, Chiao-Ming Huang, Yi-Ping Hsueh
Neuroinflammation is associated with diverse neurological disorders. Endosomal Toll-like receptors (TLRs) including TLR3, TLR7, and TLR8 cell-autonomously regulate neuronal differentiation. However, the mechanisms by which these three TLRs affect neuronal morphology are unclear. In this study, we compare these TLRs in mouse neurons. By combining in vitro neuronal cultures, in utero electroporation, and transcriptomic profiling, we show that TLR8, TLR7, and TLR3 promote dendritic pruning via MYD88 signaling...
May 18, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29776609/threshold-level-of-riemerella-anatipestifer-crossing-blood-brain-barrier-and-expression-profiles-of-immune-related-proteins-in-blood-and-brain-tissue-from-infected-ducks
#2
Shengdou Li, Xiaowei Gong, Qiwei Chen, Fuying Zheng, Guo Ji, Yongsheng Liu
Riemerella anatipestifer (R. anatipestifer) is a Gram-negative bacterium that crosses the blood-brain barrier (BBB) and causes meningitis with neurological symptoms in infected ducks. A threshold level of bacteremia must be reached before the BBB can be breached. In this study, the bacterial burden and expression profiles of immune-related proteins in blood and brain tissue samples from R. anatipestifer-infected ducks were investigated. The data showed that R. anatipestifer could cross the BBB with low-level bacteremia of 7...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29774148/genetic-variations-in-the-tlr3-locus-are-associated-with-eosinophilic-esophagitis
#3
Robledo Ávila-Castellano, José-Raúl García-Lozano, Stefan Cimbollek, Alfredo J Lucendo, Juan-Manuel Bozada, Joaquín Quiralte
Background: Eosinophilic esophagitis (EoE) is an antigen-driven disease mediated by an abnormal immune Th2 response. Objective: The objective of this article is to investigate genes associated with regulating immune responses leading to disease susceptibility. Methods: Twenty-seven tag single nucleotide polymorphisms (tSNPs) selected in five candidate genes ( TLR3, TLR4, FOXP3, FLG and TSLP ) were genotyped in 218 EoE patients and 376 controls...
April 2018: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29768176/the-chaperone-unc93b1-regulates-toll-like-receptor-stability-independently-of-endosomal-tlr-transport
#4
Karin Pelka, Damien Bertheloot, Elisa Reimer, Kshiti Phulphagar, Susanne V Schmidt, Anette Christ, Rainer Stahl, Nicki Watson, Kensuke Miyake, Nir Hacohen, Albert Haas, Melanie M Brinkmann, Ann Marshak-Rothstein, Felix Meissner, Eicke Latz
Unc-93 homolog B1 (UNC93B1) is a key regulator of nucleic acid (NA)-sensing Toll-like receptors (TLRs). Loss of NA-sensing TLR responses in UNC93B1-deficient patients facilitates Herpes simplex virus type 1 (HSV-1) encephalitis. UNC93B1 is thought to guide NA-sensing TLRs from the endoplasmic reticulum (ER) to their respective endosomal signaling compartments and to guide the flagellin receptor TLR5 to the cell surface, raising the question of how UNC93B1 mediates differential TLR trafficking. Here, we report that UNC93B1 regulates a step upstream of the differential TLR trafficking process...
May 15, 2018: Immunity
https://www.readbyqxmd.com/read/29767533/sirt1-controls-poly-i-c-dependent-mmp9-activation-in-primary-human-nasal-epithelial-cells
#5
Masanobu Suzuki, Mahnaz Ramezanpour, Clare Cooksley, Jian Li, Yuji Nakamaru, Akihiro Homma, Alkis Psaltis, Peter-John Wormald, Sarah Vreugde
BACKGROUND: Matrix metalloproteinase 9 (MMP9) is thought to be involved in the etiopathogenesis of chronic rhinosinusitis with nasal polyps (CRSwNP) and cleaves collagen IV causing hyperpermeability of the basement membrane within mucosal tissue. It is known that MMP9 expression is negatively affected by sirtuin-1 (SIRT-1) in human monocytotic cells, retinal endothelial cells and epithelial carcinoma cells. However, it is unknown which factors affect MMP9 expression and activity in human nasal epithelial cells (HNECs)...
May 16, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29763882/thymoquinone-influences-the-expression-of-genes-involved-in-self-renewal-and-immunomodulatory-potential-of-mouse-bone-marrow-derived-mesenchymal-stem-cells-in-vitro
#6
Elham Alimoradi, Sajjad Sisakhtnezhad, Hassan Akrami
Thymoquinone (TQ) is an active ingredient of some medicinal herbs. Despite extensive studies on the biological and pharmacological properties of TQ, its effect on the characteristics of stem cells remains to be clarified. Therefore, this study was aimed to investigate the effect of TQ on viability, proliferation and immunomodulatory potential of mouse bone marrow-derived mesenchymal stem cells (BM-MSCs) in vitro. The BM-MSCs were isolated from young NMRI mice. The cytotoxic effect of TQ on the BM-MSCs was evaluated using MTT assay...
May 7, 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29758486/poly-i-c-and-lps-induce-distinct-immune-responses-by-ovarian-stromal-fibroblasts
#7
Mickey V Patel, Zheng Shen, Charles R Wira
Despite its anatomical location, the ovary is a site of pathogen exposure in the human female reproductive tract (FRT). However, the role of ovarian stromal fibroblasts in immune protection is unclear. We generated a population of ovarian stromal fibroblasts derived from normal human ovaries that expressed the pattern recognition receptors TLR3, TLR4, RIG-I, & MDA5. Poly (I:C) and LPS, respective mimics of viral and bacterial infections, selectively upregulated antiviral gene expression and secretion of chemokines and antimicrobials...
May 9, 2018: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29755681/dendritic-cell-activation-enhances-anti-pd-1-mediated-immunotherapy-against-glioblastoma
#8
Tomas Garzon-Muvdi, Debebe Theodros, Andrew S Luksik, Russell Maxwell, Eileen Kim, Christopher M Jackson, Zineb Belcaid, Sudipto Ganguly, Betty Tyler, Henry Brem, Drew M Pardoll, Michael Lim
Introduction: The glioblastoma (GBM) immune microenvironment is highly suppressive as it targets and hinders multiple components of the immune system. Checkpoint blockade (CB) is being evaluated for GBM patients. However, biomarker analyses suggest that CB monotherapy may be effective only in a small fraction of GBM patients. We hypothesized that activation of antigen presentation would increase the therapeutic response to PD-1 blockade. Results: We show that activating DCs through TLR3 agonists enhances the anti-tumor immune response to CB and increases survival in GBM...
April 17, 2018: Oncotarget
https://www.readbyqxmd.com/read/29751216/pellino-1-is-a-novel-regulator-of-tnf-and-tlr-signalling-in-human-myometrial-and-amnion-cells
#9
Ratana Lim, Gillian Barker, Martha Lappas
Preterm birth is the primary cause of neonatal deaths and morbidities. Pathological processes causally linked to preterm birth are inflammation and infection. Pellino-1 (Peli1) has previously been found to regulate the inflammatory response in non-gestational tissues in response to toll-like receptor (TLR) ligands and pro-inflammatory cytokines. The aims of this study were to determine the effect of labor on Peli1 expression in myometrium and fetal membranes, and the effect of Peli1 silencing by siRNA (siPELI1) on the production of pro-inflammatory and pro-labor mediators...
April 14, 2018: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29751011/differential-innate-immune-responses-induced-by-classical-and-variant-infectious-bronchitis-viruses-in-specific-pathogen-free-chicks
#10
Rajesh Chhabra, Christopher Ball, Julian Chantrey, Kannan Ganapathy
Avian infectious bronchitis virus (IBV) continues to cause serious economic losses in global chicken production. Concurrent circulation of both classic and variant IBVs have been identified in most parts of the world, raising major challenges to global prevention and control efforts. Therefore, immunopathogenesis, particularly early host responses, needs to be better understood for effective control of diseases caused by different strains of IBVs. We investigated differing immunopathogenesis in chickens following infection with IS/885/00-like (885), QX-like (QX) and M41 IBV strains...
May 8, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29742501/modulation-of-mast-cell-toll-like-receptor-3-expression-and-cytokines-release-by-histamine
#11
Guogang Xie, Feng Wang, Xia Peng, Yuting Liang, Haiwei Yang, Li Li
BACKGROUND/AIMS: As a major inflammatory molecule released from mast cell activation, histamine has been reported to regulate TLRs expression and cytokine production in inflammatory cells present in the microenvironment. In this study, we determined the ability of histamine to modulate TLRs expression and cytokine production in mast cells. METHODS: HMC-1 and P815 cells were exposed to various concentrations of histamine in the presence or absence of histamine antagonist for 2, 6 or 16 h...
May 4, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29742137/genetic-characterization-of-indigenous-goat-breeds-in-romania-and-hungary-with-a-special-focus-on-genetic-resistance-to-mastitis-and-gastrointestinal-parasitism-based-on-40-snps
#12
Daniela Elena Ilie, Szilvia Kusza, Maria Sauer, Dinu Gavojdian
Goat breeding has become an important sector in Eastern Europe, with Romania and Hungary being among the major producer countries. Given the limited number of research done up-to-date concerning genetic studies of indigenous goat breeds reared in Romania and Hungary, the current preliminary study aimed to analyze the variability of genes related to mastitis and gastrointestinal parasitism by using Kompetitive Allele Specific PCR (KASP™). We studied 52 single nucleotide polymorphisms (SNPs) belonging to 19 genes in indigenous breeds from both countries, namely Banat's White (n = 36), Carpatina (n = 35) from Romania and Hungarian Milking (n = 79) and identified 16 polymorphic SNPs among 10 genes (PTX3, IL6, CLEC4E, IL8, IL1RN, IL15RA, TNFSF13, SOCS3, TNF and TLR3) in 150 animals...
2018: PloS One
https://www.readbyqxmd.com/read/29727627/differential-interferon-system-gene-expression-profiles-in-susceptible-and-resistant-gynogenetic-clones-of-gibel-carp-challenged-with-herpesvirus-cahv
#13
Cheng-Yan Mou, Yang Wang, Qi-Ya Zhang, Fan-Xiang Gao, Zhi Li, Jin-Feng Tong, Li Zhou, Jian-Fang Gui
Interferon (IFN) system plays a vital role in the first line of defense against viruses. In this study, we first identified multiple transcripts of 15 IFN system genes, including PRRs (TLR2, TLR3, RIG-I, and LGP2), PRR-mediated IFN signal pathway (MyD88, MITA, and MAVS), IFN regulatory factors (IRF1, IRF3, IRF7, and IRF9), IFNs (IFNφ1 and IFNφ3), and ISGs (Mx and viperin), and one transcript of TLR9 in de novo transcriptome assembly data of gibel carp head-kidney. Multiple nucleotide alignments and phylogenetic analysis of common region showed that the transcripts of every of the 15 IFN system genes were classified into two homologs with distinctly divergent sequences, indicating that hexaploid gibel carp may be an allopolyploid...
May 1, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29725106/investigation-of-immunogenic-properties-of-hemolin-from-silkworm-bombyx-mori-as-carrier-protein-an-immunoinformatic-approach
#14
Veeranarayanan Surya Aathmanathan, Nattarsingam Jothi, Vijay Kumar Prajapati, Muthukalingan Krishnan
Infectious diseases are the major cause of high mortality among infants and geriatric patients. Vaccines are the only weapon in our arsenal to defend us ourselves against innumerable infectious diseases. Though myriad of vaccines are available, still countless people die due to microbial infections. Subunit vaccine is an effective strategy of vaccine development, combining a highly immunogenic carrier protein with highly antigenic but non-immunogenic antigen (haptens). In this study we have made an attempt to utilize the immunoinformatic tool for carrier protein development...
May 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29721392/bufalin-suppresses-migration-and-invasion-of-hepatocellular-carcinoma-cells-elicited-by-poly-i-c-therapy
#15
Yinglu Feng, Yongan Chen, Yongbin Meng, Qingxin Cao, Qun Liu, Changquan Ling, Chen Wang
The Toll-like receptor 3 (TLR3) agonists as polyriboinosinic-polyribocytidylic acid (poly (I:C)) have been implicated as potential immunotherapy adjuvant for cancer whereas the exact roles of TLR3 agonists in hepatocellular carcinoma (HCC) treatment have not been clearly evaluated. In consistent with previous reports, we found that poly (I:C) triggering of TLR3 inhibited cell proliferation and induced apoptosis in HCC cells. However, poly (I:C), when used at lower concentration that cannot remarkably inhibit proliferation and induce apoptosis in HCC cells, enhanced the migration and invasion in vitro and the metastasis in vivo...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29720226/increased-a20-e3-ubiquitin-ligase-interactions-in-bid-deficient-glia-attenuate-tlr3-and-tlr4-induced-inflammation
#16
Sinéad Kinsella, Michael Fichtner, Orla Watters, Hans-Georg König, Jochen H M Prehn
BACKGROUND: Chronic pro-inflammatory signaling propagates damage to neural tissue and affects the rate of disease progression. Increased activation of Toll-like receptors (TLRs), master regulators of the innate immune response, is implicated in the etiology of several neuropathologies including amyotrophic lateral sclerosis, Alzheimer's disease, and Parkinson's disease. Previously, we identified that the Bcl-2 family protein BH3-interacting domain death agonist (Bid) potentiates the TLR4-NF-κB pro-inflammatory response in glia, and specifically characterized an interaction between Bid and TNF receptor associated factor 6 (TRAF6) in microglia in response to TLR4 activation...
May 2, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29717111/low-doses-of-lps-exacerbate-the-inflammatory-response-and-trigger-death-on-tlr3-primed-human-monocytes
#17
Marta Monguió-Tortajada, Marcella Franquesa, Maria-Rosa Sarrias, Francesc E Borràs
TLR sensing of pathogens triggers monocyte activation to initiate the host innate immune response to infection. Monocytes can dynamically adapt to different TLR agonists inducing different patterns of inflammatory response, and the sequence of exposure to TLRs can dramatically modulate cell activation. Understanding the interactions between TLR signalling that lead to synergy, priming and tolerance to TLR agonists may help explain how prior infections and inflammatory conditioning can regulate the innate immune response to subsequent infections...
May 2, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29709592/the-skin-immune-response-of-rainbow-trout-oncorhynchus-mykiss-walbaum-associated-with-puffy-skin-disease-psd
#18
Lyndsay Christie, Ronny van Aerle, Richard K Paley, David W Verner-Jeffreys, Hannah Tidbury, Matthew Green, Stephen W Feist, Irene Cano
Puffy skin disease (PSD) is an emerging skin condition which affects rainbow trout, Oncorhynchus mykiss (Walbaum). The transmission pattern of PSD suggests an infectious aetiology, however, the actual causative infectious agent(s) remain(s) unknown. In the present study, the rainbow trout epidermal immune response to PSD was characterised. Skin samples from infected fish were analysed and classified as mild, moderate or severe PSD by gross pathology and histological assessment. The level of expression of 26 immune-associated genes including cytokines, immunoglobulins and cell markers were examined by TaqMan qPCR assays...
April 27, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29706970/h7n9-avian-influenza-virus-is-efficiently-transmissible-and-induces-an-antibody-response-in-chickens
#19
Peirong Jiao, Yafen Song, Jianni Huang, Chengwei Xiang, Jin Cui, Siyu Wu, Nannan Qu, Nianchen Wang, Guowen Ouyang, Ming Liao
H7N9 viruses pose a threat to human health and they are no less harmful to the poultry industry than the H5N1 avian influenza viruses. However, the pathogenesis, transmissibility, and the host immune response of the H7N9 virus in chickens and mice remain unclear. In this study, we found that H7N9 viruses replicated in multiple organs of the chicken and viral shedding persisted up to 30 days postinoculation (DPI). The viruses were efficiently transmitted between chickens through direct contact. Notably, chickens infected with H7N9 had high antibody levels throughout the entire observation period and their antibody response lasted for 30 DPI...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29702280/crosstalk-between-toll-like-receptor-3-and-notch-signaling-contributes-to-cd14-monocytes-activity-in-enterovirus-71-infected-hand-foot-and-mouth-disease
#20
Jie Hao, Peiling Li, Yunjiao Tian, Yanhua Wang, Suqing Li, Lina Wang, Shujun Li
Interaction between Toll-like receptor (TLR) and Notch signaling contributes to inflammatory response in nephropathy and fungicidal infection, however, the role of this crosstalk remains not fully elucidated in enterovirus 71 (EV71)-induced hand, foot, and mouth disease (HFMD). The aim of this study was to investigate the crosstalk between TLR and Notch in inflammatory regulation in EV71 infection. Thirty-seven EV-71-indcued HFMD (16 mild and 21 severe cases) and eleven normal control (NC) were enrolled. CD14+ monocytes were purified, and were stimulated with either TLR3/4 agonists [poly(I: C) or LPS] or Notch signaling inhibitor...
April 24, 2018: International Immunopharmacology
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