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Cytokine signal transduction

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https://www.readbyqxmd.com/read/28428788/the-protective-role-of-type-i-interferons-in-the-gastrointestinal-tract
#1
REVIEW
Kevin P Kotredes, Brianna Thomas, Ana M Gamero
The immune system of the gastrointestinal (GI) tract manages the significant task of recognizing and eliminating pathogens while maintaining tolerance of commensal bacteria. Dysregulation of this delicate balance can be detrimental, resulting in severe inflammation, intestinal injury, and cancer. Therefore, mechanisms to relay important signals regulating cell growth and immune reactivity must be in place to support GI homeostasis. Type I interferons (IFN-I) are a family of pleiotropic cytokines, which exert a wide range of biological effects including promotion of both pro- and anti-inflammatory activities...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28427431/from-inflammation-to-gastric-cancer-the-importance-of-hedgehog-gli-signaling-in-helicobacter-pylori-induced-chronic-inflammatory-and-neoplastic-diseases
#2
REVIEW
Silja Wessler, Linda M Krisch, Dominik P Elmer, Fritz Aberger
Infections with the human pathogen Helicobacter pylori (H. pylori) are closely associated with the development of inflammatory disorders and neoplastic transformation of the gastric epithelium. Drastic changes in the micromilieu involve a complex network of H. pylori-regulated signal transduction pathways leading to the release of proinflammatory cytokines, gut hormones and a wide range of signaling molecules. Besides controlling embryonic development, the Hedgehog/GLI signaling pathway also plays important roles in epithelial proliferation, differentiation, and regeneration of the gastric physiology, but also in the induction and progression of inflammation and neoplastic transformation in H...
April 20, 2017: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/28419983/pam3csk4-induces-mmp-9-expression-in-human-monocytic-thp-1-cells
#3
Fatema Al-Rashed, Shihab Kochumon, Safa Usmani, Sardar Sindhu, Rasheed Ahmad
BACKGROUND: Matrix metalloproteinase (MMP)-9 is known to degrade the extracellular matrix and increased MMP-9 levels are related with the pathogenesis of many inflammatory conditions including obesity. Pam3CSK4 is a synthetic triacylated lipopeptide (LP) which is a potent activator of immune cells and induces cytokine production. However, it is unclear whether Pam3CSK4 is able to induce MMP-9 expression in monocytic cells. We, therefore, determined MMP-9 production by Pam3CSK4-treated THP-1 cells and also investigated the signal transduction pathway(s) involved...
April 13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28410331/the-role-of-erbin-in-gts-21-regulating-inflammtory-responses-in-mdp-stimulated-macrophages
#4
Xiao-Jing Wu, Xu-Ming Yang, Xue-Min Song, Yang Xu, Jian-Guo Li, Yan-Lin Wang, Zong-Ze Zhang, Lin-Li Le, Hui Liang, Yin Zhang
OBJECTIVE: To explore the role of Erbin protein and nucleotide-binding oligomerization domain 2/receptor-interacting serine/threonine protein kinases (NOD2/RICK) in GTS-21 activating cholinergic anti-inflammatory pathway. METHODS: Experiments were randomly divided into four groups: normal control (NC) group, muramyl dipeptide (MDP) group, 10 μg/mL MDP, GTS-21 (GTS) group, 10 μg/mL MDP plus 50 μg/mL GTS-21 (α7 nAChRs agonist), Erbin shRNA interference (sh-Erbin) group: sh-Erbin RNA plus 10 μg/mL MDP and 50 μg/mL GTS-21...
May 2017: Shock
https://www.readbyqxmd.com/read/28381810/anti-inflammatory-effect-of-self-assembling-glycol-split-glycosaminoglycan-stearylamine-conjugates-in-lipopolysaccharide-stimulated-macrophages
#5
Shinya Yanamoto, Hasan Babazada, Shinya Sakai, Yuriko Higuchi, Fumiyoshi Yamashita, Mitsuru Hashida
Glycosaminoglycans (GAGs) play important roles in various biological processes such as cell adhesion and signal transduction, as well as promote anti-inflammatory activity. We previously revealed that glycol-split heparin (HP)-aliphatic amine conjugates form self-assembled nanoparticles and suppress the production of pro-inflammatory cytokines such as tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-1β in lipopolysaccharide (LPS)-stimulated macrophages much more strongly than native HP (J. CONTROL: Release, 194, 2014, Babazada et al...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28379950/computation-and-measurement-of-cell-decision-making-errors-using-single-cell-data
#6
Iman Habibi, Raymond Cheong, Tomasz Lipniacki, Andre Levchenko, Effat S Emamian, Ali Abdi
In this study a new computational method is developed to quantify decision making errors in cells, caused by noise and signaling failures. Analysis of tumor necrosis factor (TNF) signaling pathway which regulates the transcription factor Nuclear Factor κB (NF-κB) using this method identifies two types of incorrect cell decisions called false alarm and miss. These two events represent, respectively, declaring a signal which is not present and missing a signal that does exist. Using single cell experimental data and the developed method, we compute false alarm and miss error probabilities in wild-type cells and provide a formulation which shows how these metrics depend on the signal transduction noise level...
April 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28366940/dock8-regulates-signal-transduction-events-to-control-immunity
#7
Conor J Kearney, Katrina L Randall, Jane Oliaro
Genetic mutations in the gene encoding DOCK8 cause an autosomal recessive form of hyper immunoglobulin E syndrome (AR-HIES), referred to as DOCK8 deficiency. DOCK8 deficiency in humans results in the onset of combined immunodeficiency disease (CID), clinically associated with chronic infections with diverse microbial pathogens, and a predisposition to malignancy. It is now becoming clear that DOCK8 regulates the function of diverse immune cell sub-types, particularly lymphocytes, to drive both innate and adaptive immune responses...
April 3, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28358366/forkhead-box-a3-attenuated-the-progression-of-fibrosis-in-a-rat-model-of-biliary-atresia
#8
Rui Dong, Yifan Yang, Zhen Shen, Chao Zheng, Zhu Jin, Yanlei Huang, Zhien Zhang, Shan Zheng, Gong Chen
Biliary atresia is a rare, devastating disease of infants where a fibroinflammatory process destroys the bile ducts, leading to fibrosis and biliary cirrhosis, and death if untreated. The cause and pathogenesis remain largely unknown. We tried to investigate factors involved in biliary atresia, especially forkhead box A3 (Foxa3), which might exert a role in the treatment of liver disease. We used RNA sequencing to sequence the whole transcriptomes of livers from six biliary atresia and six choledochal cysts patients...
March 30, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28356067/probiotic-bacteria-prevent-salmonella-induced-suppression-of-lymphoproliferation-in-mice-by-an-immunomodulatory-mechanism
#9
R Doug Wagner, Shemedia J Johnson
BACKGROUND: Salmonella enterica infections often exhibit a form of immune evasion. We previously observed that probiotic bacteria could prevent inhibition of lymphoproliferation and apoptosis responses of T cells associated with S. enterica infections in orally challenged mice. RESULTS: In this study, changes in expression of genes related to lymphocyte activation in mucosa-associated lymphoid tissues (MALT) of mice orally infected with S. enterica with and without treatment with probiotic bacteria were evaluated...
March 29, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28344808/safety-tumor-trafficking-and-immunogenicity-of-chimeric-antigen-receptor-car-t-cells-specific-for-tag-72-in-colorectal-cancer
#10
Kristen M Hege, Emily K Bergsland, George A Fisher, John J Nemunaitis, Robert S Warren, James G McArthur, Andy A Lin, Jeffrey Schlom, Carl H June, Stephen A Sherwin
BACKGROUND: T cells engineered to express chimeric antigen receptors (CARs) have established efficacy in the treatment of B-cell malignancies, but their relevance in solid tumors remains undefined. Here we report results of the first human trials of CAR-T cells in the treatment of solid tumors performed in the 1990s. METHODS: Patients with metastatic colorectal cancer (CRC) were treated in two phase 1 trials with first-generation retroviral transduced CAR-T cells targeting tumor-associated glycoprotein (TAG)-72 and including a CD3-zeta intracellular signaling domain (CART72 cells)...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28343998/carnosic-acid-ca-attenuates-collagen-induced-arthritis-in-db-db-mice-via-inflammation-suppression-by-regulating-ros-dependent-p38-pathway
#11
Guangtao Xia, Xia Wang, Hongsheng Sun, Yuhong Qin, Min Fu
Rheumatoid arthritis (RA) is a multifactorial autoimmune disease, characterized by inflammation of synovial joints. Carnosic acid (CA) is a phenolic diterpene isolated from Rosmarinus officinailis, playing a central role in cytoprotective responses to oxidative stress and inflammation response. Our study aimed to investigate the effects of CA on RA progression in diabetic animals. Carnosic acid (CA) was used to treat collagen-induced arthritis (CIA)-induced db/db mice. Blood glucose, oral glucose tolerance test (OGTT) and insulin tolerance test (ITT) were investigated to explore insulin resistance...
March 23, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28342757/role-of-enzymatic-free-radical-scavengers-in-management-of-oxidative-stress-in-autoimmune-disorders
#12
REVIEW
Shikha Srivastava, Deependra Singh, Satish Patel, Manju R Singh
Autoimmune disorders are distinct with over production and accumulation of free radicals due to its undisclosed genesis. The cause of numerous disorders as cancer, arthritis, psoriasis, diabetes, alzheimer's, cardiovascular disease, Parkinson's, respiratory distress syndrome, colitis, crohn's, pulmonary fibrosis, obesity and ageing have been associated with immune dysfunction and oxidative stress. In an oxidative stress, reactive oxygen species generally provoke the series of oxidation at cellular level. The buildup of free radicals in turn triggers various inflammatory cells causing release of various inflammatory interleukins, cytokines, chemokines, and tumor necrosis factors which mediate signal transduction and transcription pathways as nuclear factor- kappa B (NF-κB), signal transducer and activator of transcription 3 (STAT3), hypoxia-inducible factor-1 (HIF-1α) and nuclear factor-erythroid 2-related factor (Nrf2)...
March 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28337297/protective-effect-of-a-novel-antibody-against-tlr2-on-zymosan-induced-acute-peritonitis-in-nf-%C3%AE%C2%BAb-transgenic-mice
#13
Qingjun Pan, Jun Cai, Yanxia Peng, Haiyan Xiao, Lifang Zhang, Jinying Chen, Huafeng Liu
In addition to antibiotic therapy for treatment of peritonitis, biologics have also been found to exhibit both anti-inflammatory and inflammation-resolving properties. Here, we first developed NF-κB transgenic mice with zymosan-induced acute peritonitis to investigate the effects of a novel anti-Toll-like receptor (TLR)2 antibody (anti-T20). In this mouse model, anti-T20 treatment significantly attenuated the increase of peritoneal NF-κB activity and serum levels of inflammatory cytokines, including monocyte chemoattractant protein (MCP)-1, interleukin (IL)-6 and tumor necrosis factor (TNF)-α, in a dose-dependent manner compared to mice treated with isotype control antibody...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28326484/genome-wide-transcriptional-analysis-of-cardiovascular-related-genes-and-pathways-induced-by-pm2-5-in-human-myocardial-cells
#14
Lin Feng, Xiaozhe Yang, Collins Otieno Asweto, Jing Wu, Yannan Zhang, Hejing Hu, Yanfeng Shi, Junchao Duan, Zhiwei Sun
Air pollution has been a major environment-related health threat. Most of the studies on PM2.5 toxicity have verified on the cardiovascular system and endothelial cells. However, researches on PM2.5-induced myocardial-related toxicity are limited. This study aims to fully understand the toxic effects of PM2.5 on human myocardial cell (AC16) and explore its molecular mechanism based on microarray analysis and bioinformatics analysis. Microarray data analysis manifested that PM2.5-induced toxicity affected expression of 472 genes compared with the control group, including 166 upregulated genes and 306 downregulated genes in human myocardial (AC16) cells...
March 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28316063/endothelial-long-non-coding-rnas-regulated-by-oxidized-ldl
#15
Krishna K Singh, Pratiek N Matkar, Yi Pan, Adrian Quan, Vijay Gupta, Hwee Teoh, Mohammed Al-Omran, Subodh Verma
Oxidized low-density lipoprotein (oxLDL) plays a central role in the pathogenesis of atherosclerosis, in part via an effect to promote endothelial dysfunction. In the present study, we evaluated the expression profiles of long non-coding RNAs (lncRNAs) and protein-coding mRNAs in endothelial cells following oxLDL stimulation. LncRNAs and mRNAs from human umbilical vein endothelial cells (HUVECs) were profiled with the Arraystar Human lncRNA Expression Microarray V3.0 following 24 h of oxLDL treatment (100 µg/mL)...
March 18, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28315704/interleukin-6-and-prostate-cancer-current-developments-and-unsolved-questions
#16
Zoran Culig, Martin Puhr
Interleukin (IL)-6 is a pro-inflammatory cytokine that is expressed in prostate tumors and in the stromal tumor micro-enviroment. It is known to regulate proliferation, apoptosis, angiogenesis, and differentiation. The signaling pathway of Janus kinase and signal transducer and activator of transcription (STAT)3, which is activated by IL-6, is in the focus of scientific investigations for improved treatment approaches. Different effects of IL-6 and/or STAT3 on tumor cell growth have been observed in human and murine prostate cancer (PCa) models...
March 16, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28303575/isoform-localization-of-dectin-1-regulates-the-signaling-quality-of-anti-fungal-immunity
#17
Mike Fischer, Jörg P Müller, Bärbel Spies-Weisshart, Christine Gräfe, Oliver Kurzai, Kerstin Hünniger, Andreas Hochhaus, Sebastian Scholl, Ulf Schnetzke
Dectin-1 is recognized as a major receptor for fungal ß-glucans and contributes to anti-fungal immunity. Human monocyte populations express Dectin-1 isoforms A and B, which differ by the presence of a stalk region and its N-linked glycosylation site. Here, we analyzed the expression of both isoforms in human monocyte-derived cells. The cellular localization on cell lines stably expressing either Dectin-1 isoform A or B was studied by flow cytometry and confocal laser scanning microscopy. Intracellular protein signaling and cytokine production were analyzed by immunoblotting and cytometric bead array, respectively...
March 16, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28290727/the-toxic-effects-of-benzo-a-pyrene-on-activated-mouse-t-cells-in-vitro
#18
Shuang Guan, Yixuan Huang, Zhe Feng, Linli Xu, Yingli Jin, Jing Lu
Benzo[a]pyrene (B[a]P) is a polycyclic aromatic hydrocarbon contaminant that is widely present in environmental sources, including food. This study aims to clarify the effects of B[a]P toxicity on activated mouse T cells in vitro. Our results show that B[a]P markedly inhibited Concanavalin A (ConA)-induced T lymphocyte proliferation and suppressed the production of the cytokines Interferon (IFN)-γ, Interleukin (IL)-2 and IL-4. Western blot and protein-DNA interaction assays were used to study how B[a]P affects signal transduction...
March 14, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28259699/chicken-il-26-regulates-immune-responses-through-the-jak-stat-and-nf-%C3%AE%C2%BAb-signaling-pathways
#19
Anh Duc Truong, Yeojin Hong, Cong Thanh Hoang, Janggeun Lee, Yeong Ho Hong
Chicken interleukin 26 (ChIL-26), a member of the IL-10 family, is expressed in T cells and can induce expression of proinflammatory cytokines. We examined the response of signal transduction pathways to ChIL-26 stimulation in the chicken T (CU91), macrophage (HD11), and fibroblast (OU2) cell lines. ChIL-26 activated JAK2 and TYK2 phosphorylation, as well as activation of STAT1, STAT3, and SHP2 via tyrosine/serine residues. We also showed that ChIL-26 activates the phosphorylation of NF-κB1, TAK1, and MyD88 kinase, which are key regulators of NF-κB signaling pathways...
March 2, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28255960/jak-stat-signaling-as-a-target-for-inflammatory-and-autoimmune-diseases-current-and-future-prospects
#20
REVIEW
Shubhasree Banerjee, Ann Biehl, Massimo Gadina, Sarfaraz Hasni, Daniella M Schwartz
The Janus kinase/signal transduction and activator of transcription (JAK-STAT) signaling pathway is implicated in the pathogenesis of inflammatory and autoimmune diseases including rheumatoid arthritis, psoriasis, and inflammatory bowel disease. Many cytokines involved in the pathogenesis of autoimmune and inflammatory diseases use JAKs and STATs to transduce intracellular signals. Mutations in JAK and STAT genes cause a number of immunodeficiency syndromes, and polymorphisms in these genes are associated with autoimmune diseases...
April 2017: Drugs
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