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https://www.readbyqxmd.com/read/29218110/downregulation-of-cathepsin-g-reduces-the-activation-of-cd4-t-cells-in-murine-autoimmune-diabetes
#1
Fang Zou, Xiaoyang Lai, Jing Li, Shuihong Lei, Lei Hu
Type 1 diabetes mellitus (T1DM) is an autoimmune disease due to progressive injury of islet cells mediated by T lymphocytes (T cells). Our previous studies have shown that only cathepsin G (CatG), not other proteases, is involved in the antigen presentation of proinsulin, and if the presentation is inhibited, the activation of CD4+ T cells induced by proinsulin is alleviated in T1DM patients, and CatG-specific inhibitor reduces the activation of CD4+ cells induced by proinsulin in T1DM patients. Therefore, we hypothesize that CatG may play an important role in the activation of CD4+ T cells in T1DM...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29216911/dynamic-expression-of-cytokine-and-transcription-factor-genes-during-experimental-fasciola-gigantica-infection-in-buffaloes
#2
Wei Shi, Zhi-Yong Wei, Hany M Elsheikha, Fu-Kai Zhang, Zhao-An Sheng, Ke-Jing Lu, Dong-Ying Wang, Wei-Yi Huang, Xing-Quan Zhu
BACKGROUND: Determining the mechanisms involved in the immune-pathogenesis of the tropical liver fluke, Fasciola gigantica, is crucial to the development of any effective therapeutic intervention. Here, we examined the differential gene expression of cytokines and transcription factors in the liver of F. gigantica-infected buffaloes, over the course of infection. METHODS: Water buffaloes (swamp type) were infected orally with 500 F. gigantica encysted metacercariae...
December 8, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29212085/the-impact-of-anti-tnf-therapy-on-cd4-and-cd8-cell-subsets-in-ankylosing-spondylitis
#3
Sonja Dulic, Zsofia Vasarhelyi, Anna Bajnok, Balazs Szalay, Gergely Toldi, Laszlo Kovacs, Attila Balog
OBJECTIVES: Ankylosing spondylitis (AS) is a chronic, progressive immune-mediated inflammatory disease, driven primarily by Th1 and Th17 cells. Anti-TNF therapies are successfully used in AS to achieve and maintain remission. However, their influence on the composition of T-cell subsets is not clear. We aimed to characterize the changes in the T-cell repertoire after a long-term anti-TNF treatment in AS patients. METHODS: Twenty-two AS patients under long-term anti-TNF therapy were evaluated (15 anti-TNF responders and 7 nonresponders)...
December 6, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29209104/t-cell-subsets-in-rheumatoid-arthritis-patients-on-long-term-anti-tnf-or-il-6-receptor-blocker-therapy
#4
Sonja Dulic, Zsófia Vásárhelyi, Florentina Sava, László Berta, Balázs Szalay, Gergely Toldi, László Kovács, Attila Balog
Data on the impact of biological therapies on the T-cell phenotype in rheumatoid arthritis are limited. Here, we prospectively measured the percentages of 15 circulating T-cell subtypes using flow cytometry. We obtained transversal and longitudinal data in 30 anti-TNF responders, 19 secondary anti-TNF nonresponders, and 43 IL-6R antagonist responders, before, 8 weeks and at least 6 months after biological therapy. Untreated RA patients and healthy controls were also included. The important findings are the following: (1) the proportion of regulatory T-cells (Tregs) which are decreased in untreated RA patients becomes normal in all long-term-treated groups; (2) in anti-TNF responders as well as in nonresponders, the frequencies of naïve CD4+ and CD8+ cells are lower, whereas those of proinflammatory Th1, Th2, and Th17 cells and HLA-DR+-activated cells are higher than those in untreated RA or healthy controls; (3) in IL-6R responders, Th1 proportion is decreased, while that of Th2 and Th17 is increased as compared to that in anti-TNF-treated patients and controls; (4) pending confirmation, a CD4CD69 ratio < 2...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29205464/interleukin-17-family-cytokines-in-protective-immunity-against-infections-role-of-hematopoietic-cell-derived-and-non-hematopoietic-cell-derived-interleukin-17s
#5
REVIEW
Goro Matsuzaki, Masayuki Umemura
Interleukin (IL)-17 family cytokines consisting of six members participate in immune response in infections, autoimmune diseases and inflammatory diseases. The prototype cytokine of the family, IL-17A, was originally identified from CD4+ T cells which are now termed Th17. Later IL-17A-producing cells are expanded to various hematopoietic cells including CD8+ T cells (Tc17), invariant NKT cells, γ δ T cells, non-T non-B lymphocytes termed type 3 innate lymphoid cells (ILC3), and neutrophils. Some members of the IL-17 family cytokines other than IL-17A were also expressed by CD4+ T cells: IL-17E by Th2 cells, and IL-17F by Th17 cells...
December 2, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/29204451/targeting-of-immune-cells-by-dual-tlr2-7-ligands-suppresses-features-of-allergic-th2-immune-responses-in-mice
#6
Jonathan Laiño, Andrea Wangorsch, Frank Blanco, Sonja Wolfheimer, Maren Krause, Adam Flaczyk, Tobias-Maximilian Möller, Mindy Tsai, Stephen Galli, Stefan Vieths, Masako Toda, Stephan Scheurer, Stefan Schülke
Background: TLR ligands can promote Th1-biased immune responses, mimicking potent stimuli of viruses and bacteria. Aim: To investigate the adjuvant properties of dual TLR2/7 ligands compared to those of the mixture of both single ligands. Methods: Dual TLR2/7 ligands: CL401, CL413, and CL531, including CL264 (TLR7-ligand) and Pam2CysK4 (TLR2-ligand), were used. Immune-modulatory capacity of the dual ligands with the individual ligands alone or as a mixture in mouse BMmDCs, BMmDC:TC cocultures, or BMCMCs was compared and assessed in naïve mice and in a mouse model of OVA-induced intestinal allergy...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/29201183/role-of-mir-124a-in-t-cell-activation-and-immunity-in-aids-patients
#7
Wenge Zhao, Chuansheng Liu, Changhe Shi, Tianli Fan, Kaiqiu Chu, Yanli Ma
The role of microRNA-124a (miR-124a) in the regulation of T cell activation and immunity in patients with AIDS, was studied to provide new insights for the study, diagnosis, alleviation and treatment of AIDS. RT-qPCR technique was used to quantitatively analyze the expression of miR-124a in peripheral blood CD4+ T cells. Dual-luciferase reporter assay system was established to report possible regulatory relations between miR-124a and its potential target gene SIRT1. RT-qPCR and western blot analysis were used to detect the expression level of mRNA and protein of the target genes in T cells...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29199257/-retinoic-acid-prevents-dendritic-cells-from-inducing-novel-inflammatory-t-cells-that-produce-abundant-interleukin-13
#8
Aya Yokota-Nakatsuma
 Vitamin A (VA) plays critical roles in gut homeostasis. Dendritic cells in mesenteric lymph nodes (MLN-DCs) can metabolize VA to retinoic acid (RA), thereby inducing gut-tropic lymphocytes and enhancing peripheral differentiation of regulatory T cells expressing forkhead box P3. We found that MLN-DCs from VA-deficient mice induced a distinct inflammatory T helper type 2 (Th2)-cell subset that produced abundant interleukin-13 (IL-13) and expressed receptors for homing to skin and inflammatory sites but not to the intestine...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/29197677/distinct-biomarker-profiles-in-ex-vivo-t-cell-depletion-graft-manipulation-strategies-cd34-selection-vs-cd3-19-depletion-in-matched-sibling-allogeneic-peripheral-blood-stem-cell-transplantation
#9
Caroline R Cantilena, Sawa Ito, Xin Tian, Prachi Jain, Fariba Chinian, Prathima Anandi, Keyvan Keyvanfar, Debbie Draper, Eleftheria Koklanaris, Sara Hauffe, Jeanine Superata, David Stroncek, Pawel Muranski, A John Barrett, Minoo Battiwalla
Various approaches have been developed for ex vivo T cell depletion in allogeneic stem cell transplantation to prevent graft versus host disease (GVHD). However, direct comparisons between T-cell depletion strategies have not been well studied. We evaluated cellular and plasma biomarkers in two different graft manipulation strategies: CD3+CD19+ cell depletion (CD3/19D) versus CD34+ selection (CD34S) and their association with clinical outcomes. Identical conditions including the myeloablative preparative regimen, HLA-identical sibling donor, GVHD prophylaxis, and graft source were used for each cohort...
November 29, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29196657/alternative-activation-generates-il-10-producing-type-2-innate-lymphoid-cells
#10
Corey R Seehus, Asha Kadavallore, Brian de la Torre, Alyson R Yeckes, Yizhou Wang, Jie Tang, Jonathan Kaye
Type 2 innate lymphoid cells (ILC2) share cytokine and transcription factor expression with CD4+ Th2 cells, but functional diversity of the ILC2 lineage has yet to be fully explored. Here, we show induction of a molecularly distinct subset of activated lung ILC2, termed ILC210. These cells produce IL-10 and downregulate some pro-inflammatory genes. Signals that generate ILC210 are distinct from those that induce IL-13 production, and gene expression data indicate that an alternative activation pathway leads to the generation of ILC210...
December 1, 2017: Nature Communications
https://www.readbyqxmd.com/read/29193138/intranasal-immunization-with-phosphorylcholine-suppresses-allergic-rhinitis-in-mice
#11
Keiichi Miyashita, Junichiro Ohori, Hiromi Nagano, Satoshi Fukuyama, Yuichi Kurono
OBJECTIVES/HYPOTHESIS: Intranasal immunization with phosphorylcholine (PC) is known to reduce immunoglobulin (Ig)E production. However, its effects on the occurrence of allergic rhinitis (AR) are unknown. This study was performed to evaluate the effects of PC-keyhole limpet hemocyanin (PC-KLH) and to examine the effects on the occurrence of AR in a murine model of AR. STUDY DESIGN: In vivo study using an animal model. METHODS: Forty-five female BALB/c mice were divided into three groups; those pretreated with intranasal administration of PC-KLH followed by intraperitoneal sensitization and nasal challenge with ovalbumin (OVA) (group A), those untreated with PC-KLH followed by sensitization and nasal challenge with OVA (group B), and those untreated with PC-KLH or OVA as controls (group C)...
November 29, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29180490/identity-and-diversity-of-human-peripheral-th-and-t-regulatory-cells-defined-by-single-cell-mass-cytometry
#12
Matthew A Kunicki, Laura C Amaya Hernandez, Kara L Davis, Rosa Bacchetta, Maria-Grazia Roncarolo
Human CD3+CD4+ Th cells, FOXP3+ T regulatory (Treg) cells, and T regulatory type 1 (Tr1) cells are essential for ensuring peripheral immune response and tolerance, but the diversity of Th, Treg, and Tr1 cell subsets has not been fully characterized. Independent functional characterization of human Th1, Th2, Th17, T follicular helper (Tfh), Treg, and Tr1 cells has helped to define unique surface molecules, transcription factors, and signaling profiles for each subset. However, the adequacy of these markers to recapitulate the whole CD3+CD4+ T cell compartment remains questionable...
November 27, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29176972/interleukin-4-receptor-alpha-from-innate-to-adaptive-immunity-in-murine-models-of-cutaneous-leishmaniasis
#13
REVIEW
Ramona Hurdayal, Frank Brombacher
The interleukin (IL)-4 receptor alpha (IL-4Rα), ubiquitously expressed on both innate and adaptive immune cells, controls the signaling of archetypal type 2 immune regulators; IL-4 and IL-13, which elicit their signaling action by the type 1 IL-4Rα/gamma common and/or the type 2 IL-4Rα/IL-13Rα complexes. Global gene-deficient mouse models targeting IL-4, IL-13, or the IL-4Rα chain, followed by the development of conditional mice and generation of important cell-type-specific IL-4Rα-deficient mouse models, were indeed critical to gaining in-depth understanding of detrimental T helper (Th) 2 mechanisms in type 1-controlled diseases...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29174676/leaf-saponins-of-quillaja-brasiliensis-enhance-long-term-specific-immune-responses-and-promote-dose-sparing-effect-in-bvdv-experimental-vaccines
#14
Samuel Cibulski, Mariana Rivera-Patron, Norma Suárez, Macarena Pirez, Silvina Rossi, Anna Carolina Yendo, Fernanda de Costa, Grace Gosmann, Arthur Fett-Neto, Paulo Michel Roehe, Fernando Silveira
Saponin-based adjuvants are promising adjuvants that enhance both humoral and T-cell-mediated immunity. One of the most used natural products as vaccine adjuvants are Quillaja saponaria bark saponins and its fraction named Quil A®. Despite that, its use has been restricted for human use due to safety issues. As an alternative, our group has been studying the congener species Quillaja brasiliensis saponins and its performance as vaccine adjuvants, which have shown to trigger humoral and cellular immune responses comparable to Quil A® but with milder side effects...
November 22, 2017: Vaccine
https://www.readbyqxmd.com/read/29171989/comparative-analysis-of-immune-function-hemorheological-alterations-and-prognosis-in-colorectal-cancer-patients-with-different-traditional-chinese-medicine-syndromes
#15
Cheng-Yang Wang, Huan-Zhang Ding, Xiao Tang, Ze-Geng Li
OBJECTIVE: The present study investigates the differences in immune function, hemorheological alterations and prognostic evaluation in colorectal cancer (CRC) patients with different traditional Chinese medicine (TCM) syndromes. METHODS: A total of 128 patients, diagnosed as stage II and III of CRC, were recruited. They were assigned into three TCM syndromes: deficiency syndrome, excess syndrome, and syndrome of intermingled deficiency and excess, and another 53 healthy individuals were selected as the control...
November 17, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/29169157/tnf-%C3%AE-regulates-mast-cell-functions-by-inhibiting-cell-degranulation
#16
Yuwei Gao, Baixue Xu, Peng Zhang, Yanlong He, Xin Liang, Jianwen Liu, Jiyu Li
BACKGROUND/AIMS: The aim of this study was to investigate the involvement of inducible co-stimulatory ligand (ICOSL) expression in stimulation of mast cells (MCs) by TNF-α and the ability of TNF-α stimulation of MCs to influence CD4+ T cell differentiation and function. The mechanisms underlying TNF-α stimulation of MCs were also explored. METHODS: Mast cells and CD4+ T cells were prepared from C57BL/6 mice (aged 6-8 weeks). ICOSL expression by MCs was measured by real-time PCR and flow cytometry, and levels of IL-4, IL-10 and IFN-γ were measured by ELISA...
November 23, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29164490/immunotherapy-with-interferon-%C3%AE-induced-dendritic-cells-for-chronic-hcv-infection-the-results-of-pilot-clinical-trial
#17
Elena Chernykh, Olga Leplina, Ekaterina Oleynik, Marina Tikhonova, Tamara Tyrinova, Natalia Starostina, Alexandr Ostanin
The key role of T cells in hepatitis C virus (HCV) elimination and the ability of dendritic cells (DCs) to induce antiviral T cell responses suggest that DC vaccines could be a promising approach in the treatment of chronic HCV infection. The aim of our study was to evaluate, whether immunotherapy with DCs is safe and elicits anti-HCV T cell responses. Ten patients with HCV (genotype 1) were vaccinated with monocyte-derived DCs, generated in the presence of IFN-α (IFN-DCs) and pulsed with recombinant HCV Core and NS3 proteins...
November 21, 2017: Immunologic Research
https://www.readbyqxmd.com/read/29163808/cd4-t-cell-specific-b7-h1-selectively-inhibits-proliferation-of-na%C3%A3-ve-t-cells-and-th17-differentiation-in-experimental-autoimmune-encephalomyelitis
#18
Sheng-Jia Shi, Mei-Ling Ding, Li-Juan Wang, Jie-Heng Wu, Dong-Hui Han, Guo-Xu Zheng, Zhang-Yan Guo, Wen-Jin Xi, Wei-Jun Qin, An-Gang Yang, Wei-Hong Wen
It is widely acknowledged that interleukin 17-producing T helper (Th17) cells are critically participant in the pathogenesis of multiple sclerosis. In the current study, we identified that the expression of CD4(+)T cells specific co-inhibitory molecule B7-homologue 1(B7-H1) in spleenocytes and mononuclear cells isolated from brains and spinal cord were positive correlated with Th1 and Th17 cells generation and disease severity in experimental autoimmune encephalomyelitis (EAE). Furthermore, B7-H1 transgenic mice developed milder EAE symptoms and fewer Th17 cells than B7-H1 wild type mice...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29163537/mycn-amplification-is-associated-with-repressed-cellular-immunity-in-neuroblastoma-an-in-silico-immunological-analysis-of-target-database
#19
Peng Zhang, Xiaofang Wu, Moushumi Basu, Chen Dong, Pan Zheng, Yang Liu, Anthony David Sandler
Purpose: RNA and DNA sequencing data are traditionally used to discern intrinsic cellular pathways in cancer pathogenesis, their utility for investigating the tumor microenvironment (TME) has not been fully explored. This study explores the use of sequencing data to investigate immunity within the TME. Experimental design: Here, we use immune cell fraction estimation analysis to determine the immune profiles in the microenvironment of neuroblastoma (NB) based on RNA-seq data in the TARGET database...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29162668/huai-qi-huang-corrects-the-balance-of-th1-th2-and-treg-th17-in-an-ovalbumin-induced-asthma-mouse-model
#20
Peng Liang, Shao Peng, Man Zhang, Yingying Ma, Xinggang Zhen, Huijuan Li
This study is designed to determine whether Huai Qi Huang has immuno-regulatory effects on the Th1/Th2 and Treg/Th17 balance in ovalbumin (OVA)-induced asthma model mice. Asthma model mice were constructed by OVA treatment and Huai Qi Huang was administrated. The amount of migrated inflammatory cells in the bronchoalveolar lavage fluid (BALF) from the OVA mice was counted. The total immunoglobulin E (IgE) in the sera was detected by the IgE ELISA kit. Cell suspensions from the lung were stained with antibodies specific for CD4 and the master transcription factors for Th1 (T-bet), Th2 (Gata-3), Th17 (RORγt), and Treg (Foxp3)...
November 21, 2017: Bioscience Reports
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