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TH17 T cells

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https://www.readbyqxmd.com/read/29777158/mesenchymal-stem-cells-and-t-cells-in-the-formation-of-tertiary-lymphoid-structures-in-lupus-nephritis
#1
S Esmaeil Dorraji, Aud-Malin K Hovd, Premasany Kanapathippillai, Gunnstein Bakland, Gro Østli Eilertsen, Stine L Figenschau, Kristin A Fenton
Tertiary lymphoid structures (TLS) develop in the kidneys of lupus-prone mice and systemic lupus erythematosus (SLE) patients with lupus nephritis (LN). Here we investigated the presence of mesenchymal stem cells (MSCs) in the development of TLS in murine LN, as well as the role of human MSCs as lymphoid tissue organizer (LTo) cells on the activation of CD4+ T cells from three groups of donors including Healthy, SLE and LN patients. Mesenchymal stem like cells were detected within the pelvic wall and TLS in kidneys of lupus-prone mice...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29775622/clinicopathological-analysis-of-immunohistochemical-expression-of-retinoic-acid-related-orphan-receptor-%C3%AE-t-in-peripheral-t-cell-lymphoma-not-otherwise-specified
#2
Eriko Yanagida, Hiroaki Miyoshi, Keisuke Kawamoto, Kazutaka Nakashima, Kotaro Matsuda, Kyohei Yamada, Reiji Muto, Koji Nagafuji, Masao Seto, Koichi Ohshima
Peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS) is cytologically and phenotypically heterogeneous. Retinoic acid-related orphan receptor-γt (RORγt) is a transcription factor that regulates the differentiation of naïve CD4+ helper T-cells to Th17 cells. In the present study, we immunohistochemically confirmed the expression of RORγt in PTCL-NOS. Pathological and clinical investigations were performed for 170 cases of PTCL-NOS. RORγt-positive cases accounted for 17.6% (30/170) of the total cases and they showed a significantly higher frequency of CD8 positivity (P=...
May 15, 2018: Human Pathology
https://www.readbyqxmd.com/read/29774028/nlrp3-inflammasome-and-caspase-1-11-pathway-orchestrate-different-outcomes-in-the-host-protection-against-trypanosoma-cruzi-acute-infection
#3
Augusto F Paroli, Patricia V Gonzalez, Cintia Díaz-Luján, Luisina I Onofrio, Alfredo Arocena, Roxana C Cano, Eugenio A Carrera-Silva, Susana Gea
Infection with protozoan parasite Trypanosoma cruzi results in activation of nucleotide-binding domain and leucine-rich repeat containing receptors (NLRs). NLR activation leads to inflammasome formation, the activation of caspase-1, and the subsequent cleavage of IL-1β and IL-18. Considering that inflammasome activation and IL-1β induction by macrophages are key players for an appropriate T cell response, we investigated the relevance of NLR pyrin domain-containing 3 (NLRP3) and caspase-1/11 to elucidate their roles in the induction of different T cell phenotypes and the relationship with parasite load and hepatic inflammation during T...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29774027/clinical-remission-of-sight-threatening-non-infectious-uveitis-is-characterized-by-an-upregulation-of-peripheral-t-regulatory-cell-polarized-towards-t-bet-and-tigit
#4
Rose M Gilbert, Xiaozhe Zhang, Robert D Sampson, Michael R Ehrenstein, Dao X Nguyen, Mahid Chaudhry, Charles Mein, Nadiya Mahmud, Grazyna Galatowicz, Oren Tomkins-Netzer, Virginia L Calder, Sue Lightman
Background: Non-infectious uveitis can cause chronic relapsing and remitting ocular inflammation, which may require high dose systemic immunosuppression to prevent severe sight loss. It has been classically described as an autoimmune disease, mediated by pro-inflammatory Th1 and Th17 T-cell subsets. Studies suggest that natural immunosuppressive CD4+ CD25+ FoxP3+ T-regulatory cells (Tregs) are involved in resolution of inflammation and may be involved in the maintenance of clinical remission...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29774026/critical-role-of-alternative-m2-skewing-in-mir-155-deletion-mediated-protection-of-colitis
#5
Jintao Li, Ji Zhang, Hongxia Guo, Shimin Yang, Weiping Fan, Nan Ye, Zhiqiang Tian, Tiantian Yu, Guoping Ai, Zigang Shen, Haiyang He, Ping Yan, Hui Lin, Xue Luo, Hongli Li, Yuzhang Wu
Inflammatory bowel disease (IBD) is associated with dysregulation of both innate and adaptive immune response in the intestine. MicroRNA (miR)-155 is frequently expressed and functions in many immune cell types. Besides its function in adaptive immunity, miR-155 is a key regulator of the innate immune response in macrophages, dendritic cells, and even in epithelia cells. Although the roles of miR-155 within T and B lymphocytes in colitis have been reported, its function in innate immune cells has not been thoroughly examined...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29773813/amelioration-of-experimental-autoimmune-encephalomyelitis-and-dss-induced-colitis-by-ntg-a-009-through-the-inhibition-of-th1-and-th17-cells-differentiation
#6
Suman Acharya, Maheshwor Timilshina, Liyuan Jiang, Sabita Neupane, Dong-Young Choi, Sang Won Park, Sang Yeul Lee, Byeong-Seon Jeong, Jung-Ae Kim, Tae-Gyu Nam, Jae-Hoon Chang
CD4+ T cells are the central for the mammalian adaptive immune system. Naïve CD4+ T cells mainly differentiate in to pro-inflammatory Th1, Th2 and Th17 cells upon antigenic stimulation. IFN-γ secreting Th1 cells and IL-17 secreting Th17 cells are found to play key roles in autoimmune diseases like multiple sclerosis (MS) and ulcerative colitis (UC). In this study we found NTG-A-009, 6-aminopyridin-3-ol, has great inhibitory effect on in vitro differentiation of Th1 and Th17 cells without affecting regulatory T cells...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773345/t-cells-and-their-immunometabolism-a-novel-way-to-understanding-sepsis-immunopathogenesis-and-future-therapeutics
#7
REVIEW
V Kumar
Sepsis has always been considered as a big challenge for pharmaceutical companies in terms of discovering and designing new therapeutics. The pathogenesis of sepsis involves aberrant activation of innate immune cells (i.e. macrophages, neutrophils etc.) at early stages. However, a stage of immunosuppression is also observed during sepsis even in the patients who have recovered from it. This stage of immunosuppression is observed due to the loss of conventional (i.e. CD4+ , CD8+ ) T cells, Th17 cells and an upregulation of regulatory T cells (Tregs)...
May 5, 2018: European Journal of Cell Biology
https://www.readbyqxmd.com/read/29771573/increased-circulating-proinflammatory-t-lymphocytes-in-children-with-different-forms-of-anterior-uveitis-results-from-a-pilot-study
#8
Karoline Walscheid, Lisa Neekamp, Arnd Heiligenhaus, Toni Weinhage, Carsten Heinz, Dirk Foell
PURPOSE: To characterize peripheral blood T cells in juvenile idiopathic arthritis-associated uveitis (JIAU). METHODS: Blood samples were taken from children with JIAU (n = 18), JIA without ocular involvement (n = 11), idiopathic anterior uveitis (IAU, n = 12), and healthy controls (n = 11). Cells were stained for T cell surface markers, and intracellular cytokine staining was performed after cell stimulation and analyzed by flow cytometry. RESULTS: The Th1/Th2 ratio was increased in JIAU patients...
May 17, 2018: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/29770132/differing-outcome-of-experimental-autoimmune-encephalitis-in-macrophage-neutrophil-and-t-cell-specific-gp130-deficient-mice
#9
Kristian Holz, Marco Prinz, Stefanie M Brendecke, Alexandra Hölscher, Fengyuan Deng, Hans-Willi Mitrücker, Stefan Rose-John, Christoph Hölscher
gp130 cytokines are differentially involved in regulating the T helper (H) 17-driven pathogenesis of experimental autoimmune encephalomyelitis (EAE), the animal model of human multiple sclerosis. Interleukin (IL)-6 directly promotes the development of TH17 cells through the gp130/IL-6R complex. By contrast, IL-27 has been shown to suppress a TH17 immune response by gp130/IL-27R-alpha (α) receptor ligation. The IL-27-dependent regulation of a TH17 development could be mediated on the level of CD4 T cells. However, because IL-27 also suppresses the secretion of the TH17-driving cytokines IL-6 and IL-12/23p40 in accessory cells, TH17 immune responses may also be controlled by IL-27 on the level of macrophages and/or neutrophils...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29769586/increase-in-il-31-serum-levels-is-associated-with-reduced-structural-damage-in-early-axial-spondyloarthritis
#10
Nicolas Rosine, Adrien Etcheto, Houria Hendel-Chavez, Raphaèle Seror, Karine Briot, Anna Molto, Philippe Chanson, Yassine Taoufik, Daniel Wendling, Rik Lories, Francis Berenbaum, Rosaline van den Berg, Pascal Claudepierre, Antoine Feydy, Maxime Dougados, Christian Roux, Corinne Miceli-Richard
In spondyloarthritis, little is known about the relation between circulating cytokines and patient phenotype. We have quantified serum levels of T helper type 1 cell (Th1), Th2 and Th17 cytokines in patients with recent-onset axial spondyloarthritis (AxSpA) from the DESIR cohort, a prospective, multicenter French cohort consisting of 708 patients with recent-onset inflammatory back pain (duration >3 months but <3 years) suggestive of AxSpA. Serum levels of Th1, Th2, and Th17 cytokines were assessed at baseline in patients from the DESIR cohort fulfilling the ASAS criteria (ASAS+) and were compared with age- and sex-matched healthy controls...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769201/in-vitro-priming-of-adoptively-transferred-t-cells-with-a-ror%C3%AE-agonist-confers-durable-memory-and-stemness-in-vivo
#11
Xiao Hu, Kinga Majchrzak, Xikui Liu, Megan M Wyatt, Chauncey Spooner, Jacques Moisan, Weiping Zou, Laura L Carter, Chrystal M Paulos
Adoptive T cell transfer therapy is an FDA-approved treatment for leukemia that relies on the ex vivo expansion and re-infusion of a patient's immune cells, which can be engineered with a chimeric antigen receptor (CAR) for more efficient tumor recognition. Type 17 T cells, controlled transcriptionally by RORγ, have been reported to mediate potent anti-tumor effects superior to those observed with conventionally expanded T cells. Here we demonstrate that addition of a synthetic, small molecule RORγ agonist during ex vivo expansion potentiates the anti-tumor activity of human Th17 and Tc17 cells redirected with a CAR...
May 16, 2018: Cancer Research
https://www.readbyqxmd.com/read/29768397/lipopolysaccharide-exposure-alleviates-asthma-in-mice-by-regulating-th1-th2-and-treg-th17-balance
#12
Fengxia Ding, Zhou Fu, Bo Liu
BACKGROUND It is generally believed that endotoxin exposure exacerbates risk of developing asthmatic symptoms. However, recent studies have indicated that prior bacterial exposure may prevent future symptoms of asthma. Here, we evaluated the influence of pre-exposure to different concentrations of lipopolysaccharide (LPS) to subsequent ovalbumin (OVA) allergen sensitization and challenge. MATERIAL AND METHODS Four-week-old Balb/c mice were treated intranasally with varying concentrations of LPS (1 ug, 10 ug, and 100 ug) or sterile PBS for 10 days, then 2 weeks later they were exposed to OVA...
May 16, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29768353/correlation-of-increased-th17-treg-cell-ratio-with-endoplasmic-reticulum-stress-in-chronic-kidney-disease
#13
Xiaojing Zhu, Shuiqin Li, Qiaona Zhang, Dan Zhu, Yang Xu, Pengqian Zhang, Jin Han, Zhaoyang Duan, Jie Gao, Yan Ou
To investigate the relationship between the regulatory immune network and endoplasmic reticulum stress (ERS) in patients with different stages of chronic kidney disease (CKD).A total of 91 patients diagnosed with CKD were divided into different groups according to the stage of disease and treatment with hemodialysis (HD) or peritoneal dialysis (PD). Routine blood and biochemical tests were performed in patients in the different CKD groups and in healthy controls (n = 20). The frequencies of T helper type 17 (Th17) and regulatory T (Treg) cells in the overall T cell population were measured by flow cytometric analysis...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29766004/oral-administration-of-zataria-multiflora-extract-decreases-il-17-expression-in-perennial-allergic-rhinitis
#14
Nazila Ariaee, Jalal Ghorbani, Maryam Panahi, Mojgan Mohamadi, Javad Asili, Alireza Ranjbar, Reza Farid Hoseini, Farahzad Jabbari
Background: Rhinitis, which occurs most commonly as allergic rhinitis and affects 20% of the world's population, is a major health care burden causing significant morbidity. Considering the high prevalence of allergic rhinitis and anti-inflammatory effects of thyme, a favorite condiment, we performed a randomized clinical trial to determine whether thyme can relieve allergic rhinitis symptoms and affect the expression of TH17- and T-regulatory cell- (Treg) related cytokines IL-17, TGF-β, FOXP3, and IL-10...
April 2018: Reports of Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29765931/decreased-breg-th17-ratio-improved-the-prognosis-of-patients-with-ulcerative-colitis
#15
Xue Bing, Liang Linlang, Chen Keyan
Objective: To investigate the effects of regulatory B (Breg) cells and T helper 17 (Th17) cells on pathogenesis of ulcerative colitis, explore the clinical significance of Breg/Th17 ratio on the prognosis of ulcerative colitis, and provide the theoretical basis for the targeted therapy, diagnosis, and prognosis of the disease. Methods: Peripheral blood and colonic mucosa were collected from patients with ulcerative colitis. Hematoxylin-eosin staining was used to observe the pathological changes of colonic mucosa...
2018: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29761170/nicotinamide-adenine-dinucleotide-phosphate-reduced-oxidase-2-modulates-inflammatory-vigor-during-nonalcoholic-fatty-liver-disease-progression-in-mice
#16
Rajib Mukherjee, Maria E Moreno-Fernandez, Daniel A Giles, Monica Cappelletti, Traci E Stankiewicz, Calvin C Chan, Senad Divanovic
Nonalcoholic fatty liver disease (NAFLD) represents a disease spectrum ranging from benign steatosis to life-threatening cirrhosis and hepatocellular carcinoma. Elevated levels of reactive oxygen species (ROS) and exacerbated inflammatory responses have been implicated in NAFLD progression. Nicotinamide adenine dinucleotide phosphate (reduced) oxidase 2 (NOX2; also known as gp91Phox ), the main catalytic subunit of the nicotinamide adenine dinucleotide phosphate (reduced) oxidase complex, modulates ROS production, immune responsiveness, and pathogenesis of obesity-associated metabolic derangements...
May 2018: Hepatology Communications
https://www.readbyqxmd.com/read/29760692/il17-il17ra-as-a-novel-signaling-axis-driving-mesenchymal-stem-cell-therapeutic-function-in-experimental-autoimmune-encephalomyelitis
#17
Mónica Kurte, Patricia Luz-Crawford, Ana María Vega-Letter, Rafael A Contreras, Gautier Tejedor, Roberto Elizondo-Vega, Luna Martinez-Viola, Catalina Fernández-O'Ryan, Fernando E Figueroa, Christian Jorgensen, Farida Djouad, Flavio Carrión
The therapeutic effect of mesenchymal stem cells (MSCs) in multiple sclerosis (MS) and the experimental autoimmune encephalomyelitis (EAE) model has been well described. This effect is, in part, mediated through the inhibition of IL17-producing cells and the generation of regulatory T cells. While proinflammatory cytokines such as IFNγ, TNFα, and IL1β have been shown to enhance MSCs immunosuppressive function, the role of IL17 remains poorly elucidated. The aim of this study was, therefore, to investigate the role of the IL17/IL17R pathway on MSCs immunoregulatory effects focusing on Th17 cell generation in vitro and on Th17-mediated EAE pathogenesis in vivo ...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29757670/regulatory-t-cell-dynamics-with-abatacept-treatment-in-rheumatoid-arthritis
#18
Kane Langdon, Nagaraja Haleagrahara
The progressive damage in rheumatoid arthritis (RA) has been linked to an increase in inflammatory Th1/Th17 cells and a decrease in number or function of immunomodulatory regulatory T cells (Tregs). Many therapies that are effective in RA are shown to affect Th1/Th17 cells and/or Tregs. One such therapy, abatacept, utilizes a physiologic immunomodulatory molecule called cytotoxic lymphocyte antigen-4 (CTLA-4) which causes contact-dependent inhibition of inflammatory T-cell activation. Recent advances in CTLA-4 research has uncovered the method by which this occurs physiologically but the actions of the CTLA-4Ig fusion protein are still not fully understood...
May 14, 2018: International Reviews of Immunology
https://www.readbyqxmd.com/read/29757590/imbalance-of-peripheral-blood-t-helper-type-17-responses-in-patients-with-vitiligo
#19
Farinaz Behfarjam, Parvine Mansouri, Zohreh Jadali
There is growing evidence to suggest that Th cells play pivotal roles in a variety of chronic inflammatory diseases, including vitiligo. However, the exact role of different subsets of Th cells in the pathogenesis of vitiligo is still a question. The purpose of present study was to determine the mRNA expression level of Th17 master transcription factor retinoic acid receptor-related orphan receptors gamma (RORɣt) and cytokine mRNA and protein expression profiles of Th17 cells. 22 patients with vitiligo and 22 normal subjects were enrolled in the study...
April 2018: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29757188/microrna-210-overexpression-promotes-psoriasis-like-inflammation-by-inducing-th1-and-th17-cell-differentiation
#20
Ruifang Wu, Jinrong Zeng, Jin Yuan, Xinjie Deng, Yi Huang, Lina Chen, Peng Zhang, Huan Feng, Zixin Liu, Zijun Wang, Xiaofei Gao, Haijing Wu, Honglin Wang, Yuwen Su, Ming Zhao, Qianjin Lu
Immune imbalance of T lymphocyte subsets is a hallmark of psoriasis, but the molecular mechanisms underlying this aspect of psoriasis pathology are poorly understood. Here, we report that microRNA-210 (miR-210), a miR that is highly expressed in both psoriasis patients and mouse models, induces helper T (Th) 17 and Th1 cell differentiation but inhibits Th2 differentiation through repressing STAT6 and LYN expression, contributing to several aspects of the immune imbalance in psoriasis. Both miR-210 ablation in mice and inhibition of miR-210 by intradermal injection of antagomir-210 blocked the immune imbalance and the development of psoriasis-like inflammation in an imiquimod-induced or IL-23-induced psoriasis-like mouse model...
May 14, 2018: Journal of Clinical Investigation
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