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https://www.readbyqxmd.com/read/29030005/foxp3-icos-and-icosl-gene-polymorphisms-in-systemic-sclerosis-foxp3-rs2294020-is-associated-with-disease-progression-in-a-female-italian-population
#1
Fabio D'Amico, Giovanni Fiorito, Evangelia Skarmoutsou, Mariagrazia Granata, Giulio A Rossi, Chiara Trovato, Chiara Bellocchi, Maurizio Marchini, Lorenzo Beretta, Maria Clorinda Mazzarino
Systemic sclerosis (SSc), an autoimmune disorder, is characterized by vasculopathy, inflammation, progressive perivascular and interstitial fibrosis. Its pathogenesis is largely unknown, however strong evidences suggest that genetic predisposition may contribute to SSc development. Several gene polymorphisms involved in regulatory T cell function have been identified in many autoimmune diseases, including SSc. Moreover, dysregulation of co-stimulatory and/or co-inhibitory signals, including ICOS signalling, can lead to autoimmunity...
October 5, 2017: Immunobiology
https://www.readbyqxmd.com/read/29025273/higher-frequencies-of-circulating-icos-il-21-t-follicular-helper-cells-and-plasma-cells-in-patients-with-new-onset-membranous-nephropathy
#2
Zhihui Zhang, Yunpeng Shi, Kunmeng Yang, Rebecca Crew, Haifeng Wang, Yanfang Jiang
BACKGROUND: T follicular helper (TFH) cells and B cells are known to regulate humoral immune responses. This study is aimed at examining the putative contribution of different subsets of circulating of TFH cells and B cells to membranous nephropathy (MN). METHODS: A total of 45 MN patients and 19 healthy controls (HCs) were examined for the number of TFH cells and B cells by flow cytometry. The level of 24-h urinary protein and eGFR were calculated, and the level of serum cytokines was examined...
October 13, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28993766/therapeutic-potential-of-shark-anti-icosl-vnar-domains-is-exemplified-in-a-murine-model-of-autoimmune-non-infectious-uveitis
#3
Marina Kovaleva, Katherine Johnson, John Steven, Caroline J Barelle, Andrew Porter
Induced costimulatory ligand (ICOSL) plays an important role in the activation of T cells through its interaction with the inducible costimulator, ICOS. Suppression of full T cell activation can be achieved by blocking this interaction and has been shown to be an effective means of ameliorating disease in models of autoimmunity and inflammation. In this study, we demonstrated the ability of a novel class of anti-ICOSL antigen-binding single domains derived from sharks (VNARs) to effectively reduce inflammation in a murine model of non-infectious uveitis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28987965/emerging-targets-in-cancer-immunotherapy
#4
REVIEW
Samantha Burugu, Amanda R Dancsok, Torsten O Nielsen
The first generation of immune checkpoint inhibitors (anti-CTLA-4 and anti-PD-1/PD-L1) targeted natural immune homeostasis pathways, co-opted by cancers, to drive anti-tumor immune responses. These agents led to unprecedented results in patients with previously incurable metastatic disease and may become first-line therapies for some advanced cancers. However, these agents are efficacious in only a minority of patients. Newer strategies are becoming available that target additional immunomodulatory mechanisms to activate patients' own anti-tumor immune responses...
October 5, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28983583/aberrant-production-of-soluble-inducible-t-cell-co%C3%A2-stimulator-and-soluble-programmed-cell-death-protein-1-in-patients-with-chronic-hepatitis-b
#5
Dongsheng Wang, Qin Du, Guangcheng Luo, Qiang Wang, Guangrong Wang, Guoyuan Zhang, Zhengwei Leng, Xiaolan Guo
Previous studies demonstrated that immune dysregulation is an important cause of hepatitis B virus (HBV)‑mediated liver damage. Co‑stimulators including programmed cell death protein 1 (PD‑1) and inducible T cell co‑stimulator (ICOS) are involved in the pathogenesis of HBV. In the present study, the serum levels of soluble (s)PD‑1 and sICOS in patients with chronic HBV infections, were investigated, and the association between sPD‑1 and sICOS levels and liver injury degree was investigated. Serum sPD‑1 and sICOS levels were increased in the HBV‑patient group particularly in the HBV external core antigen positive group...
September 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28978547/validation-of-the-doubly-labeled-water-method-using-off-axis-integrated-cavity-output-spectroscopy-and-isotope-ratio-mass-spectrometry
#6
Edward L Melanson, Tracy Swibas, Wendy M Kohrt, Vicki A Catenacci, Seth A Creasy, Guy Plasqui, Loek Wouters, John R Speakman, Elena S F Berman
When the doubly-labeled water (DLW) method is used to measure total daily energy expenditure (TDEE), isotope measurements are typically performed using isotope ratio mass spectrometry (IRMS). New technologies, such as off-axis integrated cavity output spectroscopy (OA-ICOS) provide comparable isotopic measurements of standard waters and human urine samples, but the accuracy of carbon dioxide production (VCO2) determined with OA-ICOS has not been demonstrated. We compared simultaneous measurement of VCO2 obtained using whole-room indirect calorimetry (IC) with DLW-based measurements from IRMS and OA-ICOS...
October 3, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28974433/impact-of-immunosuppressive-drugs-on-circulating-tfh-cells-in-kidney-transplant-recipients-a-pilot-study
#7
Ya Mei Li, Yi Li, Yun Ying Shi, Lin Yan, Xiao Juan Wu, Jiang Tao Tang, Yang Juan Bai, Lan Lan Wang
BACKGROUND: T follicular helper cells (Tfh) are recently revealed to be vital in antibody-mediated rejection (AMR) in kidney transplant recipients (KTRs). However, the impact of immunosuppressive drugs on Tfh cells is not fully understood. The purpose of this study was to investigate the variation of Tfh cells phenotypically and functionally in KTRs treated with different immunosuppression regimens. METHODS: We recruited 26 KTRs treated with tacrolimus (TAC) -based regimen, 13 with sirolimus (SRL) -based regimen and 10 healthy controls (HC) in this study...
September 30, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28967957/colon-immune-related-adverse-events-anti-ctla-4-and-anti-pd-1-blockade-induce-distinct-immunopathological-entities
#8
Clélia Coutzac, Julien Adam, Emilie Soularue, Michael Collins, Antoine Racine, Charlotte Mussini, Lisa Boselli, Nyam Kamsukom, Christine Mateus, Mélinda Charrier, Lydie Cassard, David Planchard, Vincent Ribrag, Karim Fizazi, Yohann Loriot, Patricia Lepage, Jean-Yves Scoazec, Caroline Robert, Franck Carbonnel, Nathalie Chaput
Background and Aim: Immune checkpoint inhibitors targeting CTLA-4 and PD-1 improve survival in cancer patients but may induce immune-related adverse events, including colitis. The immunological characteristics of anti-CTLA-4 [αCTLA-4]- and anti-PD-1 [αPD-1]-related colitis have been poorly described. The aim of the present study was to compare the immunological and histological characteristics of αCTLA-4-induced colitis and αPD-1-induced colitis. Methods: Colonic biopsies from patients with αCTLA-4-induced colitis, αPD-1-induced colitis, and inflammatory bowel disease [IBD] were analysed by immunohistochemistry and flow cytometry...
October 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28962663/lineage-and-developmental-stage-specific-mechanomodulation-of-induced-pluripotent-stem-cell-differentiation
#9
Maricela Maldonado, Rebeccah J Luu, Gerardo Ico, Alex Ospina, Danielle Myung, Hung Ping Shih, Jin Nam
BACKGROUND: To maximize the translational utility of human induced pluripotent stem cells (iPSCs), the ability to precisely modulate the differentiation of iPSCs to target phenotypes is critical. Although the effects of the physical cell niche on stem cell differentiation are well documented, current approaches to direct step-wise differentiation of iPSCs have been typically limited to the optimization of soluble factors. In this regard, we investigated how temporally varied substrate stiffness affects the step-wise differentiation of iPSCs towards various lineages/phenotypes...
September 29, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28958896/anti-icos-monoclonal-antibody-treatment-of-canine-chronic-gvhd
#10
Scott S Graves, Maura H Parker, Diane Stone, George E Sale, Smitha P S Pillai, Melissa M Johnson, Rainer Storb
In murine model systems, inducible costimulator (ICOS) signaling has been implicated in the formation of chronic graft-versus-host disease (GVHD). Previously, we showed that chronic GVHD can be reproducibly produced in the dog hematopoietic cell transplantation (HCT) model and that ICOS expression is upregulated on T cells in dogs with chronic GVHD. The goal of the present study was to determine whether administration of a short course of anti-canine ICOS monoclonal antibody (mAb) could alter the rapid and progressive course of chronic GVHD...
September 25, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28955342/mass-cytometry-identifies-distinct-lung-cd4-t-cell-patterns-in-l%C3%A3-fgren-s-syndrome-and-non-l%C3%A3-fgren-s-syndrome-sarcoidosis
#11
Ylva Kaiser, Tadepally Lakshmikanth, Yang Chen, Jaromir Mikes, Anders Eklund, Petter Brodin, Adnane Achour, Johan Grunewald
Sarcoidosis is a granulomatous disorder of unknown etiology, characterized by accumulation of activated CD4(+) T cells in the lungs. Disease phenotypes Löfgren's syndrome (LS) and "non-LS" differ in terms of clinical manifestations, genetic background, HLA association, and prognosis, but the underlying inflammatory mechanisms largely remain unknown. Bronchoalveolar lavage fluid cells from four HLA-DRB1*03(+) LS and four HLA-DRB1*03(-) non-LS patients were analyzed by mass cytometry, using a panel of 33 unique markers...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28951518/immune-activation-in-early-stage-non-small-cell-lung-cancer-patients-receiving-neoadjuvant-chemotherapy-plus-ipilimumab
#12
John S Yi, Neal Ready, Patrick Healy, Chelsae Dumbauld, Robyn Osborne, Mark Berry, Debra Shoemaker, Jeffrey Clarke, Jeffrey Crawford, Betty C Tong, David Harpole, Thomas A D'Amico, Frances McSherry, Frank Dunphy, Shannon J McCall, Jared D Christensen, Xiaofei Wang, Kent J Weinhold
PURPOSE: To determine the immunologic effects of neoadjuvant chemotherapy plus ipilimumab in early stage non-small cell lung cancer (NSCLC) patients. EXPERIMENTAL DESIGN: This is a single-arm chemotherapy plus phased ipilimumab Phase II study of 24 treatment-naïve patients with Stage IB-IIIA NSCLC. Patients received neoadjuvant therapy consisting of 3 cycles of paclitaxel with either cisplatin or carboplatin and ipilimumab included in the last 2 cycles. RESULTS: Chemotherapy alone had little effect on immune parameters in PBMCs...
September 26, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28945625/expression-of-tfh-markers-and-detection-of-rhoa-p-g17v-and-idh2-p-r172k-s-mutations-in-cutaneous-localizations-of-angioimmunoblastic-t-cell-lymphomas
#13
Ariane Leclaire Alirkilicarslan, Aurélie Dupuy, Anaïs Pujals, Marie Parrens, Béatrice Vergier, Alistair Robson, Marie-Hélène Delfau-Larue, Saskia Ingen-Housz-Oro, Olivier Chosidow, Corinne Haioun, Marie Beylot-Barry, Jean-Philippe Merlio, Christiane Copie-Bergman, Philippe Gaulard, Nicolas Ortonne
Skin biopsies of 41 angioimmunoblastic T-cell lymphoma patients were retrospectively analyzed for the expression of follicular helper T-cell (TFH) markers, Epstein-Barr virus (EBV), and the presence of RHOA (p.G17V) and IDH2 (p.R172K/S) mutations using allele-specific polymerase chain reaction. We categorized cases into 4 distinctive patterns: (1) low-density lymphocytic perivascular infiltrates (n=11), (2) dense perivascular infiltrates with atypical cells and occasional inflammatory cells (n=13), (3) diffuse infiltrates reminiscent of angioimmunoblastic T-cell lymphoma (n=4), or (4) other aspects (n=13)...
September 22, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28940644/inducible-t-cell-costimulator-icos-and-cd28-polymorphisms-possibly-play-a-role-in-the-pathogenesis-of-chronic-autoreactive-urticaria
#14
Z Brzoza, W Grzeszczak, W Trautsolt, D Moczulski
BACKGROUND: Clinical experience emphasizes the coexistence of chronic spontaneous urticaria (CSU) and autoimmune disturbances. In chromosome 2q33-34, there is a cluster of homologous genes that are considered promising candidate genes for susceptibility to autoimmune diseases. AIM: To examine the possible role of polymorphisms in the genes for CD28 and inducible T-cell costimulator (ICOS) in the background of CSU. METHODS: In total, 149 patients with CSU with positive autologous serum skin test were enrolled in the study...
September 20, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28932109/evaluation-on-the-implementation-of-respiratory-protection-measures-in-old-age-homes
#15
Diana Tf Lee, Doris Yu, Margaret Ip, Jennifer Ym Tang
PURPOSE: Old age homes (OAHs) represent a vulnerable community for influenza outbreaks. Effective implementation of respiratory protection measures has been identified as an effective prevention measure to reduce mortality and morbidity caused by such outbreaks. Yet, relatively little is known about this aspect in these homes. This study evaluated the implementation of respiratory protection measures among infection control officers (ICOs) and health care workers (HCWs) in these homes in Hong Kong...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28923424/depletion-of-regulatory-t-cells-by-anti-icos-antibody-enhances-anti-tumor-immunity-of-tumor-cell-vaccine-in-prostate-cancer
#16
Lijun Mo, Qianmei Chen, Xinji Zhang, Xiaojun Shi, Lili Wei, Dianpeng Zheng, Hongwei Li, Jimin Gao, Jinlong Li, Zhiming Hu
ICOS(+)Treg cells exert important immunosuppressive effects in tumor immunity. We adopt a combination approach of ICOS(+)Treg cells depletion with tumor cell vaccine to evaluate anti-tumor immunity in mouse prostate cancer model. Streptavidin (SA)-mGM-CSF surface-modified RM-1 cells were prepared as the vaccine and the mouse subcutaneous prostate tumor model was used to evaluate the immunity. Tumor growth, flow cytometry, immunohistochemistry, immunofluorescence and enzyme linked immunosorbent assay (ELISA) were performed to evaluate the therapeutic effects...
September 15, 2017: Vaccine
https://www.readbyqxmd.com/read/28916523/cutting-edge-a-critical-role-of-lesional-t-follicular-helper-cells-in-the-pathogenesis-of-igg4-related-disease
#17
Ryuta Kamekura, Kenichi Takano, Motohisa Yamamoto, Koji Kawata, Katsunori Shigehara, Sumito Jitsukawa, Tomonori Nagaya, Fumie Ito, Akinori Sato, Noriko Ogasawara, Chieko Tsubomatsu, Hiroki Takahashi, Hiroshi Nakase, Tetsuo Himi, Shingo Ichimiya
IgG4-related disease (IgG4-RD) is a newly recognized systemic chronic fibroinflammatory disease. However, the pathogenesis of IgG4-RD remains unknown. To determine the pathophysiologic features of IgG4-RD, we examined T follicular helper (Tfh) cells in lesions and blood from patients with IgG4-RD. Patients with IgG4-related dacryoadenitis and sialadenitis (IgG4-DS) showed increased infiltration of Tfh cells highly expressing programmed death 1 and ICOS in submandibular glands. Tfh cells from IgG4-DS submandibular glands had higher expression of B cell lymphoma 6 and a greater capacity to help B cells produce IgG4 than did tonsillar Tfh cells...
October 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28916434/effects-of-icos-t-cell-depletion-via-afucosylated-monoclonal-antibody-medi-570-on-pregnant-cynomolgus-monkeys-and-the-developing-offspring
#18
Simone M Nicholson, Gianluca Carlesso, Lily I Cheng, Halie Cook, Karma DaCosta, Joel Leininger, Kathleen McKeever, Stephen Weasel Scott, Devon Taylor, Katie Streicher, Steve Eck, Molly Reed, Raffaella Faggioni, Ronald Herbst, Rakesh Dixit, Patricia C Ryan
MEDI-570 is a fully human afucosylated monoclonal antibody (MAb) against Inducible T-cell costimulator (ICOS), highly expressed on CD4+ T follicular helper (TFH) cells. Effects of MEDI-570 were evaluated in an enhanced pre-postnatal development toxicity (ePPND) study in cynomolgus monkeys. Administration to pregnant monkeys did not cause any abortifacient effects. Changes in hematology and peripheral blood T lymphocyte subsets in maternal animals and infants and the attenuated infant IgG immune response to keyhole limpet hemocyanin (KLH) were attributed to MEDI-570 pharmacology...
September 13, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28915768/isotopic-composition-of-bottled-water-in-saudi-arabia
#19
Watheq Al-Basheer, AbdulAziz Al-Jalal, Khaled Gasmi
The (18)O/(16)O and (2)H/(1)H ratios of 18 water brands representing the most popular bottled water brands in the Saudi market were measured using a system based on the latest advancements in tunable off-axis integrated cavity output diode laser spectroscopy (OA-ICOS) in the near-infrared spectral region. Utilizing δ(18)O and the δ(2)H values of locally produced water samples, a meteoric water line (δ(2)H = 7.84 δ(18)O + 2.11) was extracted and found to be consistent with the slope of the global meteoric water line (GMWL) and the geographic location of Saudi Arabia...
September 15, 2017: Isotopes in Environmental and Health Studies
https://www.readbyqxmd.com/read/28882444/tetanus-toxoid-carrier-protein-induced-t-helper-cell-responses-upon-vaccination-of-middle-aged-adults
#20
Marieke van der Heiden, Aafke Duizendstra, Guy A M Berbers, Annemieke M H Boots, Anne-Marie Buisman
INTRODUCTION: Vaccines frequently induce suboptimal immune responses in the elderly, due to immunological ageing. Timely vaccination may be a strategy to overcome this problem, which classifies middle-aged adults asan interesting target group for future vaccine interventions. However, the immunological fitness of the middle-aged population is ill-defined. It is currently unknown whether effective T-cell help towards B-cells is initiated by conjugate-carrier vaccines at middle-age. AIM: We characterized systemic Tetanus Toxoid (TT) specific T-helper cell responses in the circulation of middle-aged adults (50-65years of age, n=31) having received the MenACWY-TT vaccination...
September 4, 2017: Vaccine
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