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https://www.readbyqxmd.com/read/29036651/aureobasidium-pullulans-cultured-fluid-induces-il-18-production-leading-to-th1-polarization-during-influenza-a-virus-infection
#1
Daisuke Fujikura, Daisuke Muramatsu, Kochi Toyomane, Satoko Chiba, Takuji Daito, Atsushi Iwai, Takahisa Kouwaki, Masaaki Okamoto, Hideaki Higashi, Hiroshi Kida, Hiroyuki Oshiumi
Several microbial molecules with pathogen-associated molecular patterns stimulate host innate immune responses. The innate immune system plays a crucial role in activating acquired immune response via cytokine production and antigen presentation. Previous studies have shown that Aureobasidium pullulans-cultured fluid (AP-CF), which contains β-glucan, exhibits adjuvant activity and renders mice resistance to influenza A virus infection; however, the underlying mechanism remains elusive. In this study, we investigated the innate immune response to AP-CF...
October 3, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/29036304/il-1r-and-myd88-signaling-in-cd4-t-cells-promote-th17-immunity-and-atherosclerosis
#2
Daniel Engelbertsen, Sara Rattik, Maria Wigren, Jenifer Vallejo, Goran Marinkovic, Alexandru Schiopu, Harry Björkbacka, Jan Nilsson, Eva Bengtsson
Aims: The role of CD4+ T cells in atherosclerosis has been shown to be dependent on cytokine cues that regulate lineage commitment into mature T helper subsets. In this study we tested the roles of IL-1R1 and MyD88 signaling in CD4+ T cells in atherosclerosis. Methods and results: We transferred apoe-/-myd88+/+or apoe-/-myd88-/- CD4+ T cells to T- and B-cell-deficient rag1-/-apoe-/- mice fed high fat diet. Mice given apoe-/-myd88-/- CD4+ T cells exhibited reduced atherosclerosis compared to mice given apoe-/-myd88+/+ CD4+ T cells...
September 28, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29036021/the-role-of-innate-lymphoid-cells-in-airway-inflammation-evolving-paradigms
#3
Inge Kortekaas Krohn, Suzanne M Bal, Korneliusz Golebski
PURPOSE OF REVIEW: Innate lymphoid cells (ILCs) act as early orchestrators of the immune response, tissue repair, and maintenance of barrier homeostasis. This review summarizes recent findings of the role of ILCs in airway disease and highlights ongoing developments in clinical applications and treatment options. RECENT FINDINGS: On the basis of the transcription factors required for their development and cytokine profiles, ILCs have been classified into three subsets that resemble those of T-helper subtypes...
October 13, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/29035321/a-novel-multi-epitope-vaccine-based-on-urate-transporter-1-alleviates-streptozotocin-induced-diabetes-by-producing-anti-urat1-antibody-and-an-immunomodulatory-effect-in-c57bl-6j-mice
#4
Yanjie Ma, Huimin Cao, Zhixin Li, Jinzhi Fang, Xiaomin Wei, Peng Cheng, Rui Jiao, Xiaoran Liu, Ya Li, Yun Xing, Jiali Tang, Liang Jin, Taiming Li
Hyperuricemia (HUA) is related to diabetes. Uric acid-induced inflammation and oxidative stress are risk factors for diabetes and its complications. Human urate transporter 1 (URAT1) regulates the renal tubular reabsorption of uric acid. IA-2(5)-P2-1, a potent immunogenic carrier designed by our laboratory, can induce high-titer specific antibodies when it carries a B cell epitope, such as B cell epitopes of DPP4 (Dipeptidyl peptidase-4), xanthine oxidase. In this report, we describe a novel multi-epitope vaccine composing a peptide of URAT1, an anti-diabetic B epitope of insulinoma antigen-2(IA-2) and a Th2 epitope (P2:IPALDSLTPANED) of P277 peptide in human heat shock protein 60 (HSP60)...
October 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29034104/fibroblasts-the-unknown-sentinels-eliciting-immune-responses-against-microorganisms
#5
REVIEW
Luis Antonio Bautista-Hernández, José Luis Gómez-Olivares, Beatriz Buentello-Volante, Victor Manuel Bautista-de Lucio
Fibroblasts are present in all tissues but predominantly in connective tissues. Some of their functions include contractility, locomotion, collagen and elastin fiber production, and the regulation and degradation of the extracellular matrix. Also, fibroblasts act as sentinels to produce inflammatory mediators in response to several microorganisms. There is evidence that fibroblasts can synthesize toll-like receptors (TLRs), antimicrobial peptides, proinflammatory cytokines, chemokines, and growth factors, which are important molecules involved in innate immune response against microorganisms...
September 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29033934/ebi3-prevents-trypanosoma-cruzi-induced-myocarditis-by-dampening-ifn-%C3%AE-driven-inflammation
#6
Tiago Silva Medina, Gabriela Gonçalves Oliveira, Maria Cláudia Silva, Bruna Araújo David, Grace Kelly Silva, Denise Morais Fonseca, Renata Sesti-Costa, Amanda Farage Frade, Monique Andrade Baron, Barbara Ianni, Alexandre Costa Pereira, Christophe Chevillard, Edécio Cunha-Neto, José Antonio Marin-Neto, João Santana Silva
The identification of anti-inflammatory mediators can reveal important targetable molecules capable of counterbalancing Trypanosoma cruzi-induced myocarditis. Composed of Ebi3 and IL-27p28 subunits, IL-27 is produced by myeloid cells and is able to suppress inflammation by inducing IL-10-producing Tr1 cells, thus emerging as a potential candidate to ameliorate cardiac inflammation induced by T. cruzi. Although IL-27 has been extensively characterized as a suppressive cytokine that prevents liver immunopathogenesis after T...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29033899/environmental-factors-contribute-to-%C3%AE-cell-endoplasmic-reticulum-stress-and-neo-antigen-formation-in-type-1-diabetes
#7
Meghan L Marré, Jon D Piganelli
Type 1 diabetes (T1D) is an autoimmune disease in which immune-mediated targeting and destruction of insulin-producing pancreatic islet β cells leads to chronic hyperglycemia. There are many β cell proteins that are targeted by autoreactive T cells in their native state. However, recent studies have demonstrated that many β cell proteins are recognized as neo-antigens following posttranslational modification (PTM). Although modified neo-antigens are well-established targets of pathology in other autoimmune diseases, the effects of neo-antigens in T1D progression and the mechanisms by which they are generated are not well understood...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29033853/proinflammatory-effect-of-high-glucose-concentrations-on-hmrsv5-cells-via-the-autocrine-effect-of-hmgb1
#8
Yuening Chu, Yi Wang, Zhihuang Zheng, Yuli Lin, Rui He, Jun Liu, Xuguang Yang
Background: Peritoneal fibrosis, in which inflammation and apoptosis play crucial pathogenic roles, is a severe complication associated with the treatment of kidney failure with peritoneal dialysis (PD) using a glucose-based dialysate. Mesothelial cells (MCs) take part in the inflammatory processes by producing various cytokines and chemokines, such as monocyte chemoattractant protein 1 (MCP-1) and interleukin 8 (IL-8). The apoptosis of MCs induced by high glucose levels also contributes to complications of PD...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29032487/pathological-and-therapeutic-roles-of-innate-lymphoid-cells-in-diverse-diseases
#9
REVIEW
Jisu Kim, Geon Kim, Hyeyoung Min
Innate lymphoid cells (ILCs) are a recently defined type of innate-immunity cells that belong to the lymphoid lineage and have lymphoid morphology but do not express an antigen-specific B cell or T-cell receptor. ILCs regulate immune functions prior to the formation of adaptive immunity and exert effector functions through a cytokine release. ILCs have been classified into three groups according to the transcription factors that regulate their development and function and the effector cytokines they produce...
October 14, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/29032370/an-immunofluorescence-assay-for-extracellular-matrix-components-highlights-the-role-of-epithelial-cells-in-producing-a-stable-fibrillar-extracellular-matrix
#10
Omar S Qureshi, Hélène Bon, Breda Twomey, Gill Holdsworth, Kirsty Ford, Marianne Bergin, Linghong Huang, Mariusz Muzylak, Louise J Healy, Vanessa Hurdowar, Timothy S Johnson
Activated fibroblasts are considered major drivers of fibrotic disease progression through the production of excessive extracellular matrix (ECM) in response to signals from damaged epithelial and inflammatory cells. Nevertheless, epithelial cells are capable of expressing components of the ECM, cross-linking enzymes that increase its stability and are sensitive to factors involved in the early stages of fibrosis. We therefore wanted to test the hypothesis that epithelial cells can deposit ECM in response to stimulation in a comparable manner to fibroblasts...
October 15, 2017: Biology Open
https://www.readbyqxmd.com/read/29032197/interleukin-22-attenuates-double-stranded-rna-induced-upregulation-of-pd-l1-in-airway-epithelial-cells-via-a-stat3-dependent-mechanism
#11
Nanae Seki, Keiko Kan-O, Koichiro Matsumoto, Satoru Fukuyama, Saaka Hamano, Ken Tonai, Keiichi Ota, Hiromasa Inoue, Yoichi Nakanishi
Double-stranded RNA derived from viruses induces host immune responses. PD-L1, also known as B7-H1, is an immune-checkpoint molecule associated with the escape of viruses from host immune systems, which plays a role in the persistence of viral infection, resulting in exacerbations of underlying diseases such as asthma and chronic obstructive pulmonary disease. Interleukin (IL)-22 is produced from various immune cells and has protective properties on mucosal tissue. The binding of IL-22 to IL-22 receptor induces STAT3 activation...
October 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29032059/is-the-adaptive-immune-response-in-murine-trypanosoma-cruzi-infection-influenced-by-zinc-supplementation
#12
Cássia Mariana Bronzon da Costa, Marina Del Vecchio Filipin, Fabrícia Helena Santello, Luiz Miguel Pereira, Miriam Paula Alonso Toldo, José Clóvis do Prado Júnior, Ana Amélia Carraro Abrahão
Chagas disease afflicts 7 to 8 million people worldwide and congenital Chagas' disease usually leads to changes in the maternal environment, culminating in fetal adaptations. Several articles have described the importance of micronutrients on pregnancy, which is sensitive to infections. In Trypanosoma cruzi endemic regions, the Chagas disease is aggravated by the lack of micronutrients in an average diet, to which pregnant women are more susceptible. The aim of this study was to evaluate distinct T cells phenotypes and intracellular cytokines by flow cytometry in pregnant Wistar rats under zinc therapy during experimental Chagas' disease...
October 11, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29030870/the-competitive-nature-of-stat-complex-formation-drives-phenotype-switching-of-t-cells
#13
Ildar I Sadreev, Michael Z Q Chen, Yoshinori Umezawa, Vadim N Biktashev, Claudia Kemper, Diana V Salakhieva, Gavin I Welsh, Nikolay V Kotov
Signal transducers and activators of transcription (STATs) are key molecular determinants of T cell fate and effector function. Several inflammatory diseases are characterized by an altered balance of T cell phenotypes and cytokine secretion. STATs, therefore, represent viable therapeutic targets in numerous pathologies. However, the underlying mechanisms by which the same STAT proteins regulate both the development of different T cell phenotypes and their plasticity during changes in extracellular conditions remain unclear...
October 14, 2017: Immunology
https://www.readbyqxmd.com/read/29030662/oral-histone-deacetylase-inhibitor-synergises-with-t-cell-targeted-immunotherapy-to-preserve-beta-cell-metabolic-function-and-induce-stable-remission-of-new-onset-autoimmune-diabetes-in-nod-mice
#14
Alix Besançon, Tania Goncalves, Fabrice Valette, Mattias S Dahllöf, Thomas Mandrup-Poulsen, Lucienne Chatenoud, Sylvaine You
AIM/HYPOTHESIS: Combination therapy targeting the major actors involved in the immune-mediated destruction of pancreatic beta cells appears to be an indispensable approach to treat type 1 diabetes effectively. We hypothesised that the combination of an orally active pan-histone deacetylase inhibitor (HDACi: givinostat) with subtherapeutic doses of CD3 antibodies may provide ideal synergy to treat ongoing autoimmunity. METHODS: NOD mice transgenic for the human CD3ε (also known as CD3E) chain (NOD-huCD3ε) were treated for recent-onset diabetes with oral givinostat, subtherapeutic doses of humanised CD3 antibodies (otelixizumab, 50 μg/day, 5 days, i...
October 13, 2017: Diabetologia
https://www.readbyqxmd.com/read/29029951/intrahepatic-v%C3%AE-9v%C3%AE-2-t-cells-from-hcv-infected-patients-show-an-exhausted-phenotype-but-can-inhibit-hcv-replication
#15
E Cimini, V Bordoni, A Sacchi, U Visco-Comandini, M Montalbano, C Taibi, R Casetti, E Lalle, G D'Offizi, M R Capobianchi, C Agrati
Hepatitis C virus (HCV) persistence results from inefficiencies of both innate and adaptive immune responses to eradicate the infection. A functional impairment of circulating Vγ9Vδ2 T-cells was described but few data are available on Vγ9Vδ2 T-cells in the liver that, however, represents the battlefield in the HCV/host interaction. Aim of this work was to compare circulating and intrahepatic Vγ9Vδ2 T-cells in chronic HCV-infected patients (HCV(pos)) and in HCV-negative (HCV(neg)) subjects. Phenotypic and functional analysis was performed by flow cytometry...
October 10, 2017: Virus Research
https://www.readbyqxmd.com/read/29029943/bcg-immune-activation-reduces-growth-and-angiogenesis-in-an-in-vitro-model-of-head-and-neck-squamous-cell-carcinoma
#16
Carolina Sánchez-Rodríguez, Keyliz Peraza Cruces, Juan Riestra Ayora, Eduardo Martín-Sanz, Ricardo Sanz-Fernández
Head and neck squamous cell carcinoma (HNSCC) is one of the most frequent cancers worldwide and is associated with poor survival and significant treatment morbidity. The immune profile in patients with HNSCC is immunosuppressive and presents cytokine-mediated adaptive immune responses, triggered apoptosis of T cells, and alterations in antigen processing machinery. Bacille Calmette-Guerin (BCG) immunotherapy has been used successfully as a treatment for several types of cancer. In the present study, we sought to determine the antitumor effect of soluble mediators from peripheral blood mononuclear immune cells (PBMCs) activated with BCG vaccine in a three-dimensional coculture model of HNSCC growth using FaDu hypopharynx carcinoma squamous cells...
October 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29024769/identification-of-a-single-p19-gene-and-three-p40-paralogues-in-grass-carp-ctenopharyngodon-idellus-their-potential-for-the-formation-of-interleukin-23-and-inducible-expression-in-vitro-and-in-vivo
#17
Xinyan Wang, Lei Qin, Linyong Du, Di Chen, Anying Zhang, Kun Yang, Hong Zhou
Interleukin (IL-) 23, a member of IL-12 family, is a composite cytokine with the subunits of p19 and p40. Although IL-12 and IL-23 share the p40 subunit, they play vastly different roles in immune regulation. In teleost, much emphasis has been placed on the identification of IL-12, but evidence for the existence of IL-23 is still lacking. In the present study, a p19 gene and three p40 paralogues were isolated and identified from grass carp, suggesting multiple assembly of IL-23 molecules in fish species. To address this issue, the existence of different p19/p40 heterodimers were examined by Co-Immunoprecipitation (Co-IP) assay, showing that only co-expression of p19 and each p40 subunit could produce the soluble proteins corresponding to three IL-23 isoforms...
October 9, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29024427/combined-liver-kidney-perfusion-enhances-protective-effects-of-normothermic-perfusion-on-livers-grafts-from-donation-after-cardiac-death
#18
Xiaoshun He, Fei Ji, Zhiheng Zhang, Yunhua Tang, Lu Yang, Shanzhou Huang, Wenwen Li, Qiao Su, Wei Xiong, Zebin Zhu, Linhe Wang, Lei Lv, Jiyou Yao, Linan Zhang, Longjuan Zhang, Zhiyong Guo
It has been showed that combined liver-kidney normothermic machine perfusion (NMP) is able to better maintain the circuit's biochemical milieu. Nevertheless, whether the combined perfusion is superior to liver perfusion alone in protecting livers from donation after cardiac death (DCD) is unclear. We aimed to test the hypothesis and explored the mechanisms. Livers from 15 DCD pig donors were subjected to either static cold storage group (Group A), liver alone NMP group (Group B), or combined liver-kidney NMP group (Group C)...
October 10, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/29023933/mir-15a-16-1-suppresses-ahr-dependent-il-22-secretion-in-cd4-t-cells-and-contributes-to-immune-mediated-organ-injury
#19
Zhou Lu, Jiajing Liu, Xiaoming Liu, Enyu Huang, Jiao Yang, Jiawen Qian, Dan Zhang, Ronghua Liu, Yiwei Chu
Interleukin-22 (IL-22), as a link between leukocytic and non-leukocytic cells, has gained increasing attention for its pronounced tissue-protective properties. MicroRNAs (miRNAs), emerging as crucial immune modulators, have been reported to be involved in the production and action of various cytokines. However, the precise control of IL-22 by miRNAs and its subsequent actions remained to be elucidated. In this study, we found a negative correlation between the expression of miR-15a/16-1 and IL-22 in the model of concanavalinA (ConA)-induced immune-mediated liver injury...
October 10, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29023599/tcr-independent-functions-of-th17-cells-mediated-by-the-synergistic-actions-of-cytokines-of-the-il-12-and-il-1-families
#20
Yun Kyung Lee, Ashley E Landuyt, Stefani Lobionda, Panida Sittipo, Qing Zhao, Craig L Maynard
The development of Th17 cells is accompanied by the acquisition of responsiveness to both IL-12 and IL-23, cytokines with established roles in the development and/or function of Th1 and Th17 cells, respectively. IL-12 signaling promotes antigen-dependent Th1 differentiation but, in combination with IL-18, allows the antigen-independent perpetuation of Th1 responses. On the other hand, while IL-23 is dispensable for initial commitment to the Th17 lineage, it promotes the pathogenic function of the Th17 cells...
2017: PloS One
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