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https://www.readbyqxmd.com/read/29150834/il-22-neutralizing-autoantibodies-impair-fungal-clearance-in-murine-oropharyngeal-candidiasis-model
#1
Rudolf Bichele, Jaanika Kärner, Kai Truusalu, Imbi Smidt, Reet Mändar, Heather R Conti, Sarah L Gaffen, Pärt Peterson, Martti Laan, Kai Kisand
Protection against mucocutaneous candidiasis depends on the T helper (Th)17 pathway, as gene defects affecting its integrity result in inability to clear Candida albicans infection on body surfaces. Moreover, autoantibodies neutralizing Th17 cytokines have been related to chronic candidiasis in a rare inherited disorder called autoimmune polyendocriopathy candidiasis ectodermal dystrophy (APECED) caused by mutations in autoimmune regulator (AIRE) gene. However, the direct pathogenicity of these autoantibodies has not yet been addressed...
November 17, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/29150604/transcriptional-signature-of-human-pro-inflammatory-th17-cells-identifies-reduced-il10-gene-expression-in-multiple-sclerosis
#2
Dan Hu, Samuele Notarbartolo, Tom Croonenborghs, Bonny Patel, Ron Cialic, Tun-Hsiang Yang, Dominik Aschenbrenner, Karin M Andersson, Marco Gattorno, Minh Pham, Pia Kivisakk, Isabelle V Pierre, Youjin Lee, Karun Kiani, Maria Bokarewa, Emily Tjon, Nathalie Pochet, Federica Sallusto, Vijay K Kuchroo, Howard L Weiner
We have previously reported the molecular signature of murine pathogenic TH17 cells that induce experimental autoimmune encephalomyelitis (EAE) in animals. Here we show that human peripheral blood IFN-γ(+)IL-17(+) (TH1/17) and IFN-γ(-)IL-17(+) (TH17) CD4(+) T cells display distinct transcriptional profiles in high-throughput transcription analyses. Compared to TH17 cells, TH1/17 cells have gene signatures with marked similarity to mouse pathogenic TH17 cells. Assessing 15 representative signature genes in patients with multiple sclerosis, we find that TH1/17 cells have elevated expression of CXCR3 and reduced expression of IFNG, CCL3, CLL4, GZMB, and IL10 compared to healthy controls...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29150554/cancer-cells-induce-interleukin-22-production-from-memory-cd4-t-cells-via-interleukin-1-to-promote-tumor-growth
#3
Cornelia Voigt, Peter May, Adrian Gottschlich, Anamarija Markota, Daniel Wenk, Inga Gerlach, Sebastian Voigt, Georgios T Stathopoulos, Kristina A M Arendt, Constanze Heise, Felicitas Rataj, Klaus-Peter Janssen, Melanie Königshoff, Hauke Winter, Isabelle Himsl, Wolfgang E Thasler, Max Schnurr, Simon Rothenfußer, Stefan Endres, Sebastian Kobold
IL-22 has been identified as a cancer-promoting cytokine that is secreted by infiltrating immune cells in several cancer models. We hypothesized that IL-22 regulation would occur at the interface between cancer cells and immune cells. Breast and lung cancer cells of murine and human origin induced IL-22 production from memory CD4(+) T cells. In the present study, we found that IL-22 production in humans is dependent on activation of the NLRP3 inflammasome with the subsequent release of IL-1β from both myeloid and T cells...
November 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29150278/a-hypothetical-role-for-notch-signaling-pathway-in-immunopathogenesis-of-leprosy
#4
Héctor Serrano-Coll, Liliana Acevedo-Saenz, Nora Cardona-Castro
Leprosy is a chronic infectious disease caused by Mycobacterium leprae mainly affecting skin and peripheral nerves. Leprosy has a broad range of clinical manifestations that range from mild (tuberculoid leprosy) to severe (lepromatous leprosy) forms, and are highly dependent on the host's immune response. Among the immune response elements involved in the pathogenesis of leprosy are the Toll-like receptors (TLRs), vitamin D receptor (VDR), natural killer cells (NK), and T cells. These innate and adaptive immune response elements may be related to the Notch signaling pathway, which is involved in immune cell growth, differentiation, and proliferation...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29149822/olive-leaf-extracts-act-as-modulators-of-the-human-immune-response
#5
Thea Magrone, Anna Spagnoletta, Rosaria Salvatore, Manrico Magrone, Francesco Dentamaro, Matteo Antonio Russo, Graziana Difonzo, Carmine Summo, Francesco Caponio, Emilio Jirillo
BACKGROUND: Olive tree leaves have been used in the Mediterranean area as traditional medicine in virtue of their healthy effects. Olive leaf extracts (OLEs) contain higher amounts of polyphenols than those detected in the extra virgin olive oil and fruit. Several lines of evidence support the cardioprotective, anti-oxidant and anti-inflammatory activities exerted by OLEs. METHODS: Peripheral blood mononuclear cells (PBMCs) from twenty-five healthy donors were cultured in the presence of 3 μg of two OLE extracts, extract A (resuspended in water) and extract B (resuspended in 70% ethanol)...
November 15, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29149780/interleukin-37-relieves-allergic-inflammation-in-a-house-dust-mite-allergic-rhinitis-murine-model
#6
Do Hyun Kim, Si Won Kim, Soo Whan Kim, Jun-Myung Kang
The purpose of this study was to investigate the effects of interleukin-37 (IL-37) on a Dermatophagoides farinae (Der f)-induced murine model of allergic rhinitis (AR). BALB/c mice, except the control groups, were sensitized intraperitoneally and challenged intranasally with Der f (Der f group). The IL-37 and IL-37+anti-CD25 groups were administered IL-37 intranasally. The IL-37+anti-CD25 groups were administered anti-CD25 monoclonal antibody intraperitoneally before challenge. Allergic symptoms and the average eosinophil number were counted...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149779/increased-genes-expression-levels-of-cytokines-related-to-th17-treg-cells-in-peripheral-blood-mononuclear-cell-correlate-with-clinical-severity-in-copd-and-mustard-gas-exposed-patients
#7
Parisa Farahani, Raheleh Halabian, Ensieh Vahedi, Jafar Salimian
The long lasting inflammation and immune dysregulation is one of the main mechanisms involved in lung complication of veterans exposed to sulfur mustard (SM) gas. Th17/Treg cells have an important role in immunopathogenesis of chronic obstructive pulmonary disease (COPD) and mustard lung disease. In this study, expression of cytokines genes levels related to Th17/Treg cells was determined in peripheral blood mononuclear (PBMC) of mustard lung patients and was compared with COPD patients and healthy controls (HC)...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149778/the-changes-of-th17-treg-and-related-cytokines-il-17-il-23-il-10-and-tgf-%C3%AE-in-respiratory-syncytial-virus-bronchiolitis-rat-model
#8
Meng Gao, Liang-Xiao Liu, Fu-Ling Wu, Xuejing Zhang, Ying-Ying Li, Tao Shi, De-Zhi Li, Ting-Ting Han
Respiratory syncytial virus (RSV) is the leading cause of bronchiolitis and hospitalization that lead to high morbidity and mortality among young infants. T helper 17 (Th17) cells and regulatory T cells (Tregs) play essential roles in the pathogenesis of autoimmune, cancer, and inflammatory diseases. However, whether changes in T-cell subsets are related to the systemic immune responses in RSV-caused bronchiolitis merit further investigation. Three-week-old Sprague Dawley (SD) rats were randomly divided into the normal control (NC) and RSV bronchiolitis (RSV-B) groups...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149703/quercetin-attenuates-collagen-induced-arthritis-by-restoration-of-th17-treg-balance-and-activation-of-heme-oxygenase-1-mediated-anti-inflammatory-effect
#9
Yan Yang, Xu Zhang, Min Xu, Xin Wu, Feipeng Zhao, Chengzhi Zhao
Quercetin (QU) has been shown obvious anti-arthritic property in pre-clinical studies or clinical studies. Howbeit, the underlying mechanism of it is still not revealed distinctly and should be gotten further insight into. QU at a dosage of 150 mg/kg was administered orally in collagen-induced arthritis rats and then the clinical symptoms were monitored. The protein levels of Th17/Treg-related cytokines were determined by ELISA, and the mRNA levels of cytokines and transcription factors associated with the Th17 and Treg phenotypes were evaluated by real-time PCR, the proportions of Th17 and Treg cells were assessed by flow cytometry...
November 14, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29149330/s101-an-inhibitor-of-proliferating-t-cells-rescues-mice-from-superantigen-induced-shock
#10
Alexei Shir, Shoshana Klein, Idit Sagiv-Barfi, Tamar Geiger, Maya Zigler, Yael Langut, Nufar Edinger, Alexander Levitzki
Superantigens (SAg) are extremely potent bacterial toxins, which evoke a virulent immune response, inducing non-specific T-cell proliferation, rapid cytokine release and lethal toxic shock, for which there is no effective treatment. We previously developed a small molecule, S101, which potently inhibits proliferating T-cells (Sagiv-Barfi et al, Bioorg Med Chem (2010) 18:6404-6413). In a severe mouse model of toxic shock, a single injection of S101 given together with superantigen challenge, rescued 100% of the mice...
November 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29148561/the-role-of-il-23-receptor-signaling-in-inflammation-mediated-erosive-autoimmune-arthritis-and-bone-remodeling
#11
REVIEW
Wida Razawy, Marjolein van Driel, Erik Lubberts
The IL-23/Th17 axis has been implicated in the development of autoimmune diseases, such as rheumatoid arthritis (RA) and psoriatic arthritis (PsA). RA and PsA are heterogeneous diseases with substantial burden on patients. Increasing evidence suggests that the IL-23 signaling pathway may be involved in the development of autoimmunity and erosive joint damage. IL-23 can act either directly or indirectly on bone forming osteoblasts as well as on bone resorbing osteoclasts. As IL-23 regulates the activity of cells of the bone, it is conceivable that in addition to inflammation-mediated joint erosion, IL-23 may play a role in physiological bone remodeling...
November 17, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/29148410/th17-gene-expression-in-psoriatic-arthritis-synovial-fluid-and-peripheral-blood-compared-to-osteoarthritis-and-cutaneous-psoriasis
#12
Fatima Abji, Remy A Pollock, Kun Liang, Vinod Chandran, Dafna D Gladman
OBJECTIVES: The IL-23/IL-17 axis is central to the pathogenesis of psoriatic arthritis (PsA). We aimed to identify Th17 signalling genes that are dysregulated in synovial fluid of PsA compared to osteoarthritis (OA) patients and to determine if differences in peripheral blood can distinguish PsA from psoriasis patients and controls. METHODS: Synovial fluid cells (SFCs) from 14 PsA and 9 OA patients were obtained and stored in TRIzol reagent. RNA was isolated by phenol-chloroform extraction and purified with RNeasy miniprep kits...
November 9, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29147974/genotype-related-variations-in-proinflammatory-and-regulatory-cytokine-levels-in-treated-and-treatment-naive-hcv-infected-patients
#13
Rasoul Baharlou, Bizhan Romani, Seyed Jalal Kiani, Kaveh Sadeghi, Enayatollah Shadmand, Hadi Fazel, Farid Azizi Jalilian, Ebrahim Kord, Sajad Yaghoubi, Yousef Nikmanesh, Abbas Ahmadi Vasmehjani
Hepatitis C virus (HCV) modulates immune-related inflammatory responses to induce milder reactions leading to virus persistence. In this regard, the present study aimed to investigate the link between the HCV genotypes and the proinflammatory and regulatory cytokine levels. Ninety patients with hepatitis C infection (68 treatment-naive and 22 treated patients) and 76 healthy blood donors were studied. The serum levels of IFN-γ, IL-10, IL-17A, and IL-21 were measured by ELISA in the patients and healthy controls...
November 17, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/29147614/exploiting-a-new-strategy-to-induce-immunogenic-cell-death-to-improve-dendritic-cell-based-vaccines-for-lymphoma-immunotherapy
#14
B Montico, C Lapenta, M Ravo, D Martorelli, E Muraro, B Zeng, E Comaro, M Spada, S Donati, S M Santini, R Tarallo, G Giurato, F Rizzo, A Weisz, F Belardelli, R Dolcetti, J Dal Col
Although promising, the clinical benefit provided by dendritic cell (DC)-based vaccines is still limited and the choice of the optimal antigen formulation is still an unresolved issue. We have developed a new DC-based vaccination protocol for aggressive and/or refractory lymphomas which combines the unique features of interferon-conditioned DC (IFN-DC) with highly immunogenic tumor cell lysates (TCL) obtained from lymphoma cells undergoing immunogenic cell death. We show that treatment of mantle cell lymphoma (MCL) and diffuse large B-cell lymphoma (DLBCL) cell lines with 9-cis-retinoic acid and IFNα (RA/IFNα) induces early membrane exposure of Calreticulin, HSP70 and 90 together with CD47 down-regulation and enhanced HMGB1 secretion...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29146547/a-gene-module-associated-with-dysregulated-tcr-signaling-pathways-in-cd4-t-cell-subsets-in-rheumatoid-arthritis
#15
Shuji Sumitomo, Yasuo Nagafuchi, Yumi Tsuchida, Haruka Tsuchiya, Mineto Ota, Kazuyoshi Ishigaki, Shinichiro Nakachi, Rika Kato, Keiichi Sakurai, Norio Hanata, Shoko Tateishi, Hiroko Kanda, Akari Suzuki, Yuta Kochi, Keishi Fujio, Kazuhiko Yamamoto
We analyzed the transcriptome of detailed CD4(+) T cell subsets including them after abatacept treatment, and examined the difference among CD4(+) T cell subsets and identified gene sets that are closely associated disease activity and abatacept treatment. Seven CD4(+) T cell subsets (naive, Th1, Th17, Th1/17, nonTh1/17, Tfh and Treg) were sorted from PBMCs taken from 10 RA patients and 10 healthy controls, and three RA patients donated samples before and 6 months after abatacept treatment. Paired-end RNA sequencing was performed using HiSeq 2500...
November 13, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29145862/l161982-alleviates-collagen-induced-arthritis-in-mice-by-increasing-treg-cells-and-down-regulating-interleukin-17-and-monocyte-chemoattractant-protein-1-levels
#16
Liang Chen, Xianglei Wu, Jun Zhong, Dongqing Li
BACKGROUND: To investigate the effects and potential mechanism of L161982 (a kind of EP4 antagonist) on the collagen-induced arthritis (CIA) mice model. METHODS: The CIA mice model were first established by immunizing with Chicken Type II Collagen on DBA/1 mice. The CIA groups were administered once a day for 2 weeks with either 5 mg/kg L161982 by intraperitoneal injections (IP), 200 U celecoxib by intragastrical injections, or 100 μl PBS (IP). At the end of the study, total arthritis score and histopathologic examination were assessed to determine CIA severity...
November 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29143823/salt-responsive-gut-commensal-modulates-th17-axis-and-disease
#17
Nicola Wilck, Mariana G Matus, Sean M Kearney, Scott W Olesen, Kristoffer Forslund, Hendrik Bartolomaeus, Stefanie Haase, Anja Mähler, András Balogh, Lajos Markó, Olga Vvedenskaya, Friedrich H Kleiner, Dmitry Tsvetkov, Lars Klug, Paul I Costea, Shinichi Sunagawa, Lisa Maier, Natalia Rakova, Valentin Schatz, Patrick Neubert, Christian Frätzer, Alexander Krannich, Maik Gollasch, Diana A Grohme, Beatriz F Côrte-Real, Roman G Gerlach, Marijana Basic, Athanasios Typas, Chuan Wu, Jens M Titze, Jonathan Jantsch, Michael Boschmann, Ralf Dechend, Markus Kleinewietfeld, Stefan Kempa, Peer Bork, Ralf A Linker, Eric J Alm, Dominik N Müller
A Western lifestyle with high salt consumption can lead to hypertension and cardiovascular disease. High salt may additionally drive autoimmunity by inducing T helper 17 (TH17) cells, which can also contribute to hypertension. Induction of TH17 cells depends on gut microbiota; however, the effect of salt on the gut microbiome is unknown. Here we show that high salt intake affects the gut microbiome in mice, particularly by depleting Lactobacillus murinus. Consequently, treatment of mice with L. murinus prevented salt-induced aggravation of actively induced experimental autoimmune encephalomyelitis and salt-sensitive hypertension by modulating TH17 cells...
November 15, 2017: Nature
https://www.readbyqxmd.com/read/29142301/alteration-of-the-intestinal-microbiome-characterizes-preclinical-inflammatory-arthritis-in-mice-and-its-modulation-attenuates-established-arthritis
#18
Rebecca Rogier, Heather Evans-Marin, Julia Manasson, Peter M van der Kraan, Birgitte Walgreen, Monique M Helsen, Liduine A van den Bersselaar, Fons A van de Loo, Peter L van Lent, Steven B Abramson, Wim B van den Berg, Marije I Koenders, Jose U Scher, Shahla Abdollahi-Roodsaz
Perturbations of the intestinal microbiome have been observed in patients with new-onset and chronic autoimmune inflammatory arthritis. However, it is currently unknown whether these alterations precede the development of arthritis or are rather a consequence of disease. Modulation of intestinal microbiota by oral antibiotics or germ-free condition can prevent arthritis in mice. Yet, the therapeutic potential of modulation of the microbiota after the onset of arthritis is not well characterized. We here show that the intestinal microbial community undergoes marked changes in the preclinical phase of collagen induced arthritis (CIA)...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29142248/the-psoriasis-associated-il-17a-induces-and-cooperates-with-il-36-cytokines-to-control-keratinocyte-differentiation-and-function
#19
Carolina M Pfaff, Yvonne Marquardt, Katharina Fietkau, Jens M Baron, Bernhard Lüscher
Psoriasis is a TH17-driven inflammatory disease affecting a significant proportion of the world population. The molecular consequences of IL-17 signaling in the skin are only partially understood. Therefore, we evaluated the IL-17A effects on organotypic 3-dimensional skin models and observed that IL-17A interfered with keratinocyte differentiation. In agreement with this phenotype, IL-17A repressed the expression of many genes encoding structural proteins. Moreover, genes encoding anti-microbial peptides were induced, resulting in a strengthening of the chemical barrier...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29142230/unique-transcriptome-signatures-and-gm-csf-expression-in-lymphocytes-from-patients-with-spondyloarthritis
#20
M H Al-Mossawi, L Chen, H Fang, A Ridley, J de Wit, N Yager, A Hammitzsch, I Pulyakhina, B P Fairfax, D Simone, Yao Yi, S Bandyopadhyay, K Doig, R Gundle, B Kendrick, F Powrie, J C Knight, P Bowness
Spondyloarthritis encompasses a group of common inflammatory diseases thought to be driven by IL-17A-secreting type-17 lymphocytes. Here we show increased numbers of GM-CSF-producing CD4 and CD8 lymphocytes in the blood and joints of patients with spondyloarthritis, and increased numbers of IL-17A(+)GM-CSF(+) double-producing CD4, CD8, γδ and NK cells. GM-CSF production in CD4 T cells occurs both independently and in combination with classical Th1 and Th17 cytokines. Type 3 innate lymphoid cells producing predominantly GM-CSF are expanded in synovial tissues from patients with spondyloarthritis...
November 15, 2017: Nature Communications
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