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https://www.readbyqxmd.com/read/28518123/expression-of-exogenous-cytokine-in-patient-derived-xenografts-via-injection-with-a-cytokine-transduced-stromal-cell-line
#1
Jacqueline S Coats, Ineavely Baez, Cornelia Stoian, Terry-Ann M Milford, Xiaobing Zhang, Olivia L Francis, Ruijun Su, Kimberly J Payne
Patient-derived xenograft (PDX) mice are produced by transplanting human cells into immune deficient mice. These models are an important tool for studying the mechanisms of normal and malignant hematopoiesis and are the gold standard for identifying effective chemotherapies for many malignancies. PDX models are possible because many of the mouse cytokines also act on human cells. However, this is not the case for all cytokines, including many that are critical for studying normal and malignant hematopoiesis in human cells...
May 10, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28497916/emerging-endotypes-of-chronic-rhinosinusitis-and-its-application-to-precision-medicine
#2
REVIEW
Dae Woo Kim, Seong H Cho
Chronic rhinosinusitis (CRS) is a heterogeneous inflammatory disease with various underlying pathophysiologic mechanisms which translate to endotypes, in contrast to clinical phenotypes or histological subtypes. Defining endotypes can help clinicians predict disease prognosis, select subjects suitable for a specific therapy, and assess risks for comorbid conditions, including asthma. Therefore, with recent advancement of biologicals in CRS clinical trials, endotyping can be a breakthrough in treating recalcitrant CRS...
July 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28479194/influence-of-flg-mutations-and-tslp-polymorphisms-on-atopic-dermatitis-onset-age
#3
Joy Wan, Nandita Mitra, Ole J Hoffstad, David J Margolis
No abstract text is available yet for this article.
May 4, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28472780/effects-of-microrna-19b-on-airway-remodeling-airway-inflammation-and-degree-of-oxidative-stress-by-targeting-tslp-through-the-stat3-signaling-pathway-in-a-mouse-model-of-asthma
#4
Ling Ye, Yan Mou, Jian Wang, Mei-Ling Jin
This study explored the effects of microRNA-19b (miR-19b) on airway remodeling, airway inflammation, and degree of oxidative stress in a mouse model of asthma. Bioinformatics analyses and dual luciferase reporter gene assays revealed that thymic stromal lymphopoietin (TSLP) is a direct target of miR-19b. An asthma model was established via ovalbumin (OVA) sensitization and challenge in 72 female BALB/c mice. Mice were then assigned to saline, OVA-sensitized, saline+miR-19b mimics, saline+anti-TSLP, OVA-sensitized+miR-19b mimics, OVA-sensitized+mimics scramble, OVA-sensitized+anti-TSLP, and OVA-sensitized+IgG2a groups...
April 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28471975/thymic-stromal-lymphopoietin-il-33-and-periostin-in-hospitalized-infants-with-viral-bronchiolitis
#5
María Luz García-García, Cristina Calvo, Ana Moreira, José Antonio Cañas, Francisco Pozo, Beatriz Sastre, Sergio Quevedo, Inmaculada Casas, Victoria Del Pozo
Much attention has recently been focused on thymic stromal lymphopoietin (TSLP), IL-33, and periostin in allergic disease, but less is known about their role in viral bronchiolitis.The aim of the study was to investigate whether infants exhibit enhanced nasal airway secretion of TSLP, IL-33, and periostin during natural respiratory viral bronchiolitis compared to healthy controls.In total, 213 infants < 2 years of age, hospitalized with bronchiolitis from October/2013 to April/2016 were enrolled alongside 45 healthy infants...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28461505/suppressors-and-activators-of-jak-stat-signaling-at-diagnosis-and-relapse-of-acute-lymphoblastic-leukemia-in-down-syndrome
#6
Omer Schwartzman, Angela Maria Savino, Michael Gombert, Chiara Palmi, Gunnar Cario, Martin Schrappe, Cornelia Eckert, Arend von Stackelberg, Jin-Yan Huang, Michal Hameiri-Grossman, Smadar Avigad, Geertruy Te Kronnie, Ifat Geron, Yehudit Birger, Avigail Rein, Giulia Zarfati, Ute Fischer, Zohar Mukamel, Martin Stanulla, Andrea Biondi, Giovanni Cazzaniga, Amedeo Vetere, Bridget K Wagner, Zhu Chen, Sai-Juan Chen, Amos Tanay, Arndt Borkhardt, Shai Izraeli
Children with Down syndrome (DS) are prone to development of high-risk B-cell precursor ALL (DS-ALL), which differs genetically from most sporadic pediatric ALLs. Increased expression of cytokine receptor-like factor 2 (CRLF2), the receptor to thymic stromal lymphopoietin (TSLP), characterizes about half of DS-ALLs and also a subgroup of sporadic "Philadelphia-like" ALLs. To understand the pathogenesis of relapsed DS-ALL, we performed integrative genomic analysis of 25 matched diagnosis-remission and -relapse DS-ALLs...
May 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28461288/a-meta-analysis-of-genome-wide-association-studies-of-asthma-in-puerto%C3%A2-ricans
#7
Qi Yan, John Brehm, Maria Pino-Yanes, Erick Forno, Jerome Lin, Sam S Oh, Edna Acosta-Perez, Cathy C Laurie, Michelle M Cloutier, Benjamin A Raby, Adrienne M Stilp, Tamar Sofer, Donglei Hu, Scott Huntsman, Celeste S Eng, Matthew P Conomos, Deepa Rastogi, Kenneth Rice, Glorisa Canino, Wei Chen, R Graham Barr, Esteban G Burchard, Juan C Celedón
Puerto Ricans are disproportionately affected with asthma in the USA. In this study, we aim to identify genetic variants that confer susceptibility to asthma in Puerto Ricans.We conducted a meta-analysis of genome-wide association studies (GWAS) of asthma in Puerto Ricans, including participants from: the Genetics of Asthma in Latino Americans (GALA) I-II, the Hartford-Puerto Rico Study and the Hispanic Community Health Study. Moreover, we examined whether susceptibility loci identified in previous meta-analyses of GWAS are associated with asthma in Puerto Ricans...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28443609/the-hiv-1-viral-synapse-signals-human-foreskin-keratinocytes-to-secrete-thymic-stromal-lymphopoietin-facilitating-hiv-1-foreskin-entry
#8
Z Zhou, L Xu, A Sennepin, C Federici, Y Ganor, D Tudor, D Damotte, N Barry Delongchamps, M Zerbib, M Bomsel
The complexity of signal transduction resulting from the contact of human immunodeficiency virus type 1 (HIV-1)-infected cells and mucosal cells has hampered our comprehension of HIV-1 mucosal entry. Such process is driven efficiently only by viral synapse contacts, whereas cell-free HIV-1 remains poorly infectious. Using CD4(+) T-cells expressing only HIV-1 envelope inoculated on human adult foreskin tissues, we designed methodologies to identify the signals transduced in foreskin keratinocytes following HIV-1-envelope-dependent viral synapse formation...
April 26, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28433687/steroid-resistance-of-airway-type-2-innate-lymphoid-cells-ilc2s-from-severe-asthma-the-role-of-thymic-stromal-cell-lymphopoietin-tslp
#9
Sucai Liu, Mukesh Verma, Lidia Michalec, Weimin Liu, Anand Sripada, Donald Rollins, James Good, Yoko Ito, HongWei Chu, Magdalena M Gorska, Richard J Martin, Rafeul Alam
BACKGROUND: ILC2s represent an important type 2 immune cell. Glucocorticoid regulation of human ILC2s is largely unknown. OBJECTIVE: To assess steroid resistance of human blood and airway ILC2s from asthmatic patients and examine its mechanism of induction. METHODS: We studied human blood and lung ILC2s from asthmatic and control subjects by flow cytometry and ELISA. RESULTS: Dexamethasone (Dex) inhibited (P=0.04) CRTH2 and type 2 cytokine expression by blood ILC2s stimulated with IL25 and IL33...
April 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28428203/tslp-activated-dendritic-cells-induce-human-t-follicular-helper-cell-differentiation-through-ox40-ligand
#10
Lucia Pattarini, Coline Trichot, Sofia Bogiatzi, Maximilien Grandclaudon, Stephan Meller, Zela Keuylian, Melanie Durand, Elisabetta Volpe, Stefania Madonna, Andrea Cavani, Andrea Chiricozzi, Marco Romanelli, Toshiyuki Hori, Alain Hovnanian, Bernhard Homey, Vassili Soumelis
T follicular helper cells (Tfh) are important regulators of humoral responses. Human Tfh polarization pathways have been thus far associated with Th1 and Th17 polarization pathways. How human Tfh cells differentiate in Th2-skewed environments is unknown. We show that thymic stromal lymphopoietin (TSLP)-activated dendritic cells (DCs) promote human Tfh differentiation from naive CD4 T cells. We identified a novel population, distinct from Th2 cells, expressing IL-21 and TNF, suggestive of inflammatory cells...
May 1, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28412391/moving-towards-endotypes-in-atopic-dermatitis-identification-of-patient-clusters-based-on-serum-biomarker-analysis
#11
Judith Lydia Thijs, Ian Strickland, Catharina Ansfrieda Francisca Maria Bruijnzeel-Koomen, Stefan Nierkens, Barbara Giovannone, Eszter Csomor, Bret Richard Sellman, Tomas Mustelin, Matthew Alexander Sleeman, Marjolein Saskia de Bruin-Weller, Athula Herath, Julia Drylewicz, Richard David May, DirkJan Hijnen
BACKGROUND: Atopic dermatitis (AD) is a complex, chronic, inflammatory skin disease with a diverse clinical presentation. It is however unclear whether this diversity exists at a biological level. OBJECTIVE: To test the hypothesis that AD is heterogeneous at the biological level of individual inflammatory mediators. METHODS: Serum from 193 moderate to severe adult AD patients (geomean (95%CI) SASSAD of 22.3 (21.3, 23.3) and 39.1 (37.5, 40...
April 12, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28404633/il-7r%C3%AE-expression-regulates-murine-dendritic-cell-sensitivity-to-thymic-stromal-lymphopoietin
#12
Laura Kummola, Zsuzsanna Ortutay, Xi Chen, Stephane Caucheteux, Sanna Hämäläinen, Saara Aittomäki, Ryoji Yagi, Jinfang Zhu, Marko Pesu, William E Paul, Ilkka S Junttila
Thymic stromal lymphopoietin (TSLP) and IL-7 are related cytokines that mediate growth and differentiation events in the immune system. They signal through IL-7Rα-containing receptors. Target cells of TSLP in Th2 responses include CD4 T cells and dendritic cells (DCs). Although it has been reported that expression of TSLP receptor (TSLPR) on CD4 T cells is required for OVA-induced lung inflammation, DCs have also been shown to be target cells of TSLP. In this study, we show that murine ex vivo splenic DCs are unresponsive to TSLP, as they fail to phosphorylate STAT5, but in vitro overnight culture, especially in presence of IL-4, renders DCs responsive to both TSLP and IL-7...
May 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28400057/tslp-signaling-blocking-alleviates-e-cadherin-dysfunction-of-airway-epithelium-in-a-hdm-induced-asthma-model
#13
Yahui Hu, Hangming Dong, Mengchen Zou, Chaowen Huang, Lishan Luo, Changhui Yu, JiaLong Chen, Zhefan Xie, Haijin Zhao, Yanqing Le, Fei Zou, Laiyu Liu, Shaoxi Cai
Recent studies have indicated that Thymic stromal lymphopoietin (TSLP) plays an important role in the prevention and treatment of asthma. However the role of TSLP in dysfunction of airway epithelial adherens junctions E-cadherin in house dust mite (HDM)-induced asthma has not been addressed. We hypothesized that TSLP contributed to HDM-induced E-cadherin dysfunction in asthmatic BALB/c mice and 16HBE cells. In vivo, a HDM-induced asthma mouse model was set up for 8weeks. Mice inhaled an anti-TSLP monoclonal antibody (mAb) before HDM...
February 21, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28390860/basophil-derived-interleukin-4-promotes-epicutaneous-antigen-sensitization-concomitant-with-the-development-of-food-allergy
#14
Maryam Hussain, Loïc Borcard, Kevin P Walsh, Maria Pena Rodriguez, Christoph Mueller, Brian S Kim, Masato Kubo, David Artis, Mario Noti
BACKGROUND: Exaggerated TSLP production and infiltration of basophils are associated with the pathogenesis of atopic dermatitis (AD), a recognized risk factor for the development of food allergies. While TSLP and basophils have been implicated to promote food-induced allergic disorders in response to epicutaneous sensitization, the mechanisms by which TSLP-elicited basophils guide the progression of allergic inflammation in the skin to distant mucosal sites such as the gastrointestinal tract are poorly understood...
April 5, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28377574/tslp-is-a-direct-trigger-for-t-cell-migration-in-filaggrin-deficient-skin-equivalents
#15
Leonie Wallmeyer, Kristina Dietert, Michaela Sochorová, Achim D Gruber, Burkhard Kleuser, Kateřina Vávrová, Sarah Hedtrich
Mutations in the gene encoding for filaggrin (FLG) are major predisposing factors for atopic dermatitis (AD). Besides genetic predisposition, immunological dysregulations considerably contribute to its pathophysiology. For example, thymic stromal lymphopoietin (TSLP) is highly expressed in lesional atopic skin and significantly contributes to the pathogenesis of AD by activating dendritic cells that then initiate downstream effects on, for example, T cells. However, little is known about the direct interplay between TSLP, filaggrin-deficient skin and other immune cells such as T lymphocytes...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28368013/structure-and-antagonism-of-the-receptor-complex-mediated-by-human-tslp-in-allergy-and-asthma
#16
Kenneth Verstraete, Frank Peelman, Harald Braun, Juan Lopez, Dries Van Rompaey, Ann Dansercoer, Isabel Vandenberghe, Kris Pauwels, Jan Tavernier, Bart N Lambrecht, Hamida Hammad, Hans De Winter, Rudi Beyaert, Guy Lippens, Savvas N Savvides
The pro-inflammatory cytokine thymic stromal lymphopoietin (TSLP) is pivotal to the pathophysiology of widespread allergic diseases mediated by type 2 helper T cell (Th2) responses, including asthma and atopic dermatitis. The emergence of human TSLP as a clinical target against asthma calls for maximally harnessing its therapeutic potential via structural and mechanistic considerations. Here we employ an integrative experimental approach focusing on productive and antagonized TSLP complexes and free cytokine...
April 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28364410/association-analyses-identify-two-susceptibility-loci-5q31-and-5q22-1-for-atopic-dermatitis-in-chinese-han-population
#17
Xiao-Yun Jiang, Jin-Hua Zhao, Chong-Xian Yu, Ling Fang, Xiao-Dong Zheng, Xian-Yong Yin, Yan-Yan Wu, Xian-Fa Tang, Fu-Sheng Zhou, Xue-Jun Zhang, Feng-Li Xiao
BACKGROUND: Atopic dermatitis (AD) and other atopic diseases often share some common genetic and pathogenic bases. Recent genome-wide association studies (GWAS) have identified several loci associated with atopic diseases, allergic sensitization and asthma in different populations. The aim of this study was to investigate whether these susceptibility loci were related to AD in Chinese Han population. METHODS: Eight single nucleotide polymorphisms (SNPs) from recent atopic diseases and allergic sensitization GWAS were genotyped in 3,013 AD patients and 5,483 healthy controls in Chinese Han population using Sequenom MassArray system...
April 1, 2017: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/28342911/basophils-high-affinity-ige-receptors-and-ccl2-in-human-anaphylaxis
#18
Peter Korosec, Paul J Turner, Mira Silar, Peter Kopac, Mitja Kosnik, Bernhard F Gibbs, Mohamed H Shamji, Adnan Custovic, Matija Rijavec
BACKGROUND: The role of basophils in anaphylaxis is unclear. OBJECTIVE: We sought to investigate whether basophils have an important role in human anaphylaxis. METHODS: In an emergency department study we recruited 31 patients with acute anaphylaxis, predominantly to Hymenoptera venom. We measured expression of basophil activation markers (CD63 and CD203c); the absolute number of circulating basophils; whole-blood FCER1A, carboxypeptidase A3 (CPA3), and L-histidine decarboxylase (HDC) gene expression; and serum markers (CCL2, CCL5, CCL11, IL-3, and thymic stromal lymphopoietin) at 3 time points (ie, during the anaphylactic episode and in convalescent samples 7 and 30 days later)...
March 22, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28341671/lipopolysaccharide-elicited-tslpr-expression-enriches-a-functionally-discrete-subset-of-human-cd14-cd1c-monocytes
#19
Francesco Borriello, Raffaella Iannone, Sarah Di Somma, Viviana Vastolo, Giuseppe Petrosino, Feliciano Visconte, Maddalena Raia, Giulia Scalia, Stefania Loffredo, Gilda Varricchi, Maria Rosaria Galdiero, Francescopaolo Granata, Luigi Del Vecchio, Giuseppe Portella, Gianni Marone
Thymic stromal lymphopoietin (TSLP) is a cytokine produced mainly by epithelial cells in response to inflammatory or microbial stimuli and binds to the TSLP receptor (TSLPR) complex, a heterodimer composed of TSLPR and IL-7 receptor α (CD127). TSLP activates multiple immune cell subsets expressing the TSLPR complex and plays a role in several models of disease. Although human monocytes express TSLPR and CD127 mRNAs in response to the TLR4 agonist LPS, their responsiveness to TSLP is poorly defined. We demonstrate that TSLP enhances human CD14(+) monocyte CCL17 production in response to LPS and IL-4...
May 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28329851/short-tslp-attenuates-toluene-diisocyanate-tdi-induced-airway-inflammation-and-inhibits-hmgb1-rage-and-long-tslp-expression
#20
Yanhong Wang, Yanqing Le, Wenqu Zhao, Yun Lin, Yue Wu, Changhui Yu, Jing Xiong, Fei Zou, Hangming Dong, Shaoxi Cai, Haijin Zhao
Short thymic stromal lymphopoietin (short TSLP), one of TSLP variants, exerts anti-inflammatory activities in endotoxin shock and colitis mouse models. Our latest work reported that short TSLP prevented house dust mite (HDM)-induced epithelial barrier disruption. Yet the role of short TSLP in toluene diisocyanate (TDI)-induced asthma is unknown. Male BALB/c mice were sensitized and challenged with TDI to generate a chemical-induced asthma model. Synthetic short TSLP peptides were given intranasally (i.n.) or intraperitoneally (i...
February 27, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
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