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Type 2 innate lymphoid cells

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https://www.readbyqxmd.com/read/29672927/interleukin-33-contributes-to-ilc2-activation-and-early-inflammation-associated-lung-injury-during-abdominal-sepsis
#1
Hui Xu, Jing Xu, Li Xu, Shuqing Jin, Heth R Turnquist, Rosemary Hoffman, Patricia Loughran, Timothy R Billiar, Meihong Deng
Sepsis is defined as infection with organ dysfunction due to a dysregulated immune response. The lung is one of the most vulnerable organs at the onset of sepsis. Interleukin-33 (IL-33) can be released by injured epithelial and endothelial cells in the lung and regulate immune activation and infiltration. Therefore, we postulated that IL-33 would contribute to the immune response in the lung during sepsis. Using the cecal ligation and puncture (CLP) sepsis model, we show here that IL-33 contributes significantly to both sepsis-induced inflammation in the lung and systemic inflammatory response in the early phase of sepsis...
April 19, 2018: Immunology and Cell Biology
https://www.readbyqxmd.com/read/29645082/soluble-st2-sst2-regulation-by-rhinovirus-rv-and-25-oh-vitamin-d3-in-the-blood-of-asthmatic-children
#2
Patricia Haag, Himanshu Sharma, Manfred Rauh, Theodor Zimmermann, Tytti Vuorinen, Nikolaos G Papadopoulos, Scott T Weiss, Susetta Finotto
Paediatric asthma exacerbations are often caused by Rhinovirus (RV). Moreover, 25(OH)-Vitamin D3 (=25(OH) VitD3) deficiency during infancy was found associated with asthma. Here, we investigated the innate immune responses to RV and their possible modulation by 25(OH) VitD3 serum levels in a preschool cohort of children with and without asthma. The innate lymphoid cell type 2 (ILC2)-associated marker, ST2 was found upregulated in the blood cells of asthmatic children with low serum levels of 25(OH)VitD3 in the absence of RV in their airways...
April 12, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29626211/targeting-cytokines-to-treat-asthma-and-chronic-obstructive-pulmonary-disease
#3
REVIEW
Peter J Barnes
Cytokines play a key role in orchestrating and perpetuating the chronic airway inflammation in asthma and chronic obstructive pulmonary disease (COPD), making them attractive targets for treating these disorders. Asthma and some cases of COPD are mainly driven by type 2 immune responses, which comprise increased airway eosinophils, T helper 2 (TH 2) cells and group 2 innate lymphoid cells (ILC2s) and the secretion of IL-4, IL-5 and IL-13. Clinical trials of antibodies that block these interleukins have shown reduced acute exacerbations and oral corticosteroid use and improvements in lung function and symptoms in selected patients...
April 6, 2018: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/29625134/il-17-producing-st2-ilc2-plays-a-pathogenic-role-in-lung-inflammation
#4
Ting Cai, Jinxin Qiu, Yan Ji, Wenjing Li, Zhaoyun Ding, Caixia Suo, Jiali Chang, Jingjing Wang, Rui He, Youcun Qian, Xiaohuan Guo, Liang Zhou, Huiming Sheng, Lei Shen, Ju Qiu
BACKGROUND: IL-17 plays a pathogenic role in asthma. ST2- iILC2s (inflammatory group 2 innate lymphoid cells) driven by IL-25 can produce IL-17, while ST2+ nILC2s (natural ILC2s) produce few IL-17. OBJECTIVE: We characterized the ST2+ IL-17+ ILC2s during lung inflammation and determined the pathogenesis and molecular regulation of ST2+ IL-17+ ILC2s. METHODS: Lung inflammation was induced by papain or IL-33. IL-17 production by lung ILC2s from wild-type, Rag1-/- , Rorcgfp/gfp and Ahr-/- mice was examined by flow cytometry...
April 3, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29623414/ilc2s-in-infectious-diseases-and-organ-specific-fibrosis
#5
REVIEW
Markus Kindermann, Lisa Knipfer, Imke Atreya, Stefan Wirtz
Type 2 immune responses evolved to provide host protection against parasitic infections and to support the repair of infection-induced tissue injury. However, persistent chronic organ damage can result in dysregulated production of critical type 2 cytokines supporting tissue remodeling and fibrosis development. Recently, group 2 innate lymphoid cells (ILC2s) were newly described as central innate mediators of type 2 responses. In particular, by secretion of the cytokines IL-5, IL-9, and IL-13 and the growth factor amphiregulin in response to the release of tissue-derived alarmins, ILC2s have been shown to substantially contribute to both the dismissal of metazoan parasites and the repair of infection-dependent or sterile tissue damage...
March 26, 2018: Seminars in Immunopathology
https://www.readbyqxmd.com/read/29599193/pulmonary-neuroendocrine-cells-amplify-allergic-asthma-responses
#6
Pengfei Sui, Darin L Wiesner, Jinhao Xu, Yan Zhang, Jinwoo Lee, Steven Van Dyken, Amber Lashua, Chuyue Yu, Bruce S Klein, Richard M Locksley, Gail Deutsch, Xin Sun
Pulmonary neuroendocrine cells (PNECs) are rare airway epithelial cells whose function is poorly understood. Here we show that Ascl1 -mutant mice which have no PNECs exhibit severely blunted mucosal type 2 response in models of allergic asthma. PNECs reside in close proximity to group 2 innate lymphoid cells (ILC2s) near airway branch points. PNECs act through calcitonin gene-related peptide (CGRP) to stimulate ILC2s and elicit downstream immune responses. In addition, PNECs act through neurotransmitter gamma-aminobutyric acid (GABA) to induce goblet-cell hyperplasia...
March 29, 2018: Science
https://www.readbyqxmd.com/read/29593738/prostaglandin-e-2-inhibits-group-2-innate-lymphoid-cell-activation-and-allergic-airway-inflammation-through-e-prostanoid-4-cyclic-adenosine-monophosphate-signaling
#7
Yu Zhou, Wei Wang, Conghui Zhao, Yan Wang, Haoming Wu, Xiuyuan Sun, Youfei Guan, Yu Zhang
Evidence is accumulating that group 2 innate lymphoid cells (ILC2) play an important role in allergic airway inflammation by producing a large amount of type 2 cytokines. But it remains poorly understood how its activities are properly controlled in vivo . Here, we demonstrated that prostaglandin E2 (PGE2 ) had a profound inhibitory effect on IL-33-induced ILC2 expansion and IL-5 and IL-13 production in vitro . This effect was mimicked by PGE1 -alcohol but attenuated by ONO-AE3-208, indicating a selective action through the E-prostanoid 4 (EP4) receptor...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29593546/commentary-neuronal-regulation-of-type-2-innate-lymphoid-cells-via-neuromedin-u
#8
COMMENT
Geraldine M Jowett, Joana F Neves
No abstract text is available yet for this article.
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29569854/il-25-axis-is-involved-in-the-pathogenesis-of-human-primary-and-experimental-sj%C3%A3-gren-s-syndrome
#9
Giuliana Guggino, Xiang Lin, Aroldo Rizzo, Fan Xiao, Laura Saieva, Stefania Raimondo, Diana Di Liberto, Giuseppina Candore, Piero Ruscitti, Paola Cipriani, Roberto Giacomelli, Francesco Dieli, Riccardo Alessandro, Giovanni Triolo, Liwei Lu, Francesco Ciccia
OBJECTIVE: To investigate the role of IL-25/IL-17RB axis in experimental Sjögren's syndrome (ESS) and in patients with primary Sjögren Syndrome (pSS) and pSS-associated lymphoma. METHODS: Expression of IL-25, IL-17RB, IL-17B and TRAF6 was analyzed on minor salivary glands (MSG) from pSS patients and on parotid glands from pSS-associated B cell non-Hodgkin lymphomas (NHL). IL-17RB expression and the frequencies of natural type 2 innate lymphoid cells (nILC2), inflammatory ILC2 (iILC2) and M2-polarized macrophages were assessed by flow cytometry in salivary gland mononuclear cells (SGMC) and peripheral blood mononuclear cells (PBMC)...
March 23, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29568816/a-major-population-of-functional-klrg1-ilc2s-in-female-lungs-contributes-to-a-sex-bias-in-ilc2-numbers
#10
Sapana Kadel, Erola Ainsua-Enrich, Ibrahim Hatipoglu, Sean Turner, Simar Singh, Sohaib Khan, Susan Kovats
Humans show significant sex differences in the incidence and severity of respiratory diseases, including asthma and virus infection. Sex hormones contribute to the female sex bias in type 2 inflammation associated with respiratory diseases, consistent with recent reports that female lungs harbor greater numbers of GATA-3-dependent group 2 innate lymphoid cells (ILC2s). In this study, we determined whether sex hormone levels govern sex differences in the numbers, phenotype, and function of ILC2s in the murine lung and bone marrow (BM)...
February 2018: ImmunoHorizons
https://www.readbyqxmd.com/read/29556000/environmental-allergens-induce-allergic-inflammation-through-proteolytic-maturation-of-il-33
#11
Corinne Cayrol, Anais Duval, Pauline Schmitt, Stephane Roga, Mylène Camus, Alexandre Stella, Odile Burlet-Schiltz, Anne Gonzalez-de-Peredo, Jean-Philippe Girard
Allergic inflammation has crucial roles in allergic diseases such as asthma. It is therefore important to understand why and how the immune system responds to allergens. Here we found that full-length interleukin 33 (IL-33FL ), an alarmin cytokine with critical roles in type 2 immunity and asthma, functioned as a protease sensor that detected proteolytic activities associated with various environmental allergens across four kingdoms, including fungi, house dust mites, bacteria and pollens. When exposed to allergen proteases, IL-33FL was rapidly cleaved in its central 'sensor' domain, which led to activation of the production of type 2 cytokines in group 2 innate lymphoid cells...
March 19, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29554131/down-regulation-of-microrna-203-3p-initiates-type-2-pathology-during-schistosome-infection-via-elevation-of-interleukin-33
#12
Xing He, Jun Xie, Yange Wang, Xiaobin Fan, Qin Su, Yue Sun, Nanhang Lei, Dongmei Zhang, Guangping Gao, Weiqing Pan
The type 2 immune response is the central mechanism of disease progression in schistosomiasis, but the signals that induce it after infection remain elusive. Aberrant microRNA (miRNA) expression is a hallmark of human diseases including schistosomiasis, and targeting the deregulated miRNA can mitigate disease outcomes. Here, we demonstrate that efficient and sustained elevation of miR-203-3p in liver tissues, using the highly hepatotropic recombinant adeno-associated virus serotype 8 (rAAV8), protects mice against lethal schistosome infection by alleviating hepatic fibrosis...
March 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29545797/death-receptor-3-signaling-controls-the-balance-between-regulatory-and-effector-lymphocytes-in-samp1-yitfc-mice-with-crohn-s-disease-like-ileitis
#13
Zhaodong Li, Ludovica F Buttó, Kristine-Anne Buela, Li-Guo Jia, Minh Lam, John D Ward, Theresa T Pizarro, Fabio Cominelli
Death receptor 3 (DR3), a member of the tumor necrosis factor receptor (TNFR) superfamily, has been implicated in regulating T-helper type-1 (TH 1), type-2 (TH 2), and type-17 (TH 17) responses as well as regulatory T cell (Treg ) and innate lymphoid cell (ILC) functions during immune-mediated diseases. However, the role of DR3 in controlling lymphocyte functions in inflammatory bowel disease (IBD) is not fully understood. Recent studies have shown that activation of DR3 signaling modulates Treg expansion suggesting that stimulation of DR3 represents a potential therapeutic target in human inflammatory diseases, including Crohn's disease (CD)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29526762/lack-of-type-2-innate-lymphoid-cells-promote-a-type-i-driven-enhanced-immune-response-in-contact-hypersensitivity
#14
David A Rafei-Shamsabadi, Saskia van de Poel, Britta Dorn, Stefanie Kunz, Stefan F Martin, Christoph S N Klose, Sebastian J Arnold, Yakup Tanriver, Karolina Ebert, Andreas Diefenbach, Timotheus Y F Halim, Andrew N J McKenzie, Thilo Jakob
Allergic contact dermatitis and its animal model, contact hypersensitivity (CHS), are T cell-mediated inflammatory skin diseases that require activation of the innate immune system. Here we investigate the role of innate lymphoid cells (ILCs) during the elicitation phase of TNCB-induced CHS using EomesGfp/+ x Rorc(γt)-CreTg x Rosa26RYfp/+ reporter mice. Ear swelling responses, cutaneous ILC numbers and cytokine production were determined at different time points. Functional analyses were performed in a CD90...
March 8, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29522844/regulation-of-type-2-innate-lymphoid-cell-dependent-airway-hyperreactivity-by-butyrate
#15
Christina Li-Ping Thio, Po-Yu Chi, Alan Chuan-Ying Lai, Ya-Jen Chang
BACKGROUND: Allergic asthma is characterized airway hyperreactivity (AHR) and inflammation driven by aberrant TH 2 response. Type 2 innate lymphoid cells (ILC2s) are a critical source of TH 2 cytokines IL-5 and IL-13 which promote acute asthma exacerbation. Short chain fatty acids (SCFAs) have been shown to attenuate T cell-mediated allergic airway inflammation. Their role in the regulation of ILC2-driven AHR and lung inflammation, however, remains unknown. OBJECTIVE: We investigated the immunomodulatory role of SCFAs in the regulation of ILC2-induced AHR and airway inflammation and delineated the mechanism involved...
March 6, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29522843/il-25-enhances-th17-cell-mediated-contact-dermatitis-by-promoting-il-1%C3%AE-production-by-dermal-dendritic-cells
#16
Hajime Suto, Aya Nambu, Hideaki Morita, Sachiko Yamaguchi, Takafumi Numata, Takamichi Yoshizaki, Eri Shimura, Ken Arae, Yousuke Asada, Kenichiro Motomura, Mari Kaneko, Takaya Abe, Akira Matsuda, Yoichiro Iwakura, Ko Okumura, Hirohisa Saito, Kenji Matsumoto, Katsuko Sudo, Susumu Nakae
BACKGROUND: As well as thymic stromal lymphopoietin (TSLP) and IL-33, IL-25 is known to induce Th2 cytokine production by various cell types-including Th2 cells, Th9 cells, invariant NKT cells and group 2 innate lymphoid cells-involved in Th2-type immune responses. Since both Th2-type and Th17-type cells/cytokines are crucial for contact hypersensitivity (CHS), IL-25 may contribute to this by enhancing Th2-type immune responses. However, the precise role of IL-25 in the pathogenesis of FITC-induced CHS is poorly understood...
March 6, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29500225/ror%C3%AE-expressing-t-regulatory-cells-restrain-allergic-skin-inflammation
#17
Nidhi Malhotra, Juan Manuel Leyva-Castillo, Unmesh Jadhav, Olga Barreiro, Christy Kam, Nicholas K O'Neill, Francoise Meylan, Pierre Chambon, Ulrich H von Andrian, Richard M Siegel, Eddie C Wang, Ramesh Shivdasani, Raif S Geha
Atopic dermatitis is an allergic inflammatory skin disease characterized by the production of the type 2 cytokines in the skin by type 2 innate lymphoid cells (ILC2s) and T helper 2 (TH 2) cells, and tissue eosinophilia. Using two distinct mouse models of atopic dermatitis, we show that expression of retinoid-related orphan receptor α (RORα) in skin-resident T regulatory cells (Tregs ) is important for restraining allergic skin inflammation. In both models, targeted deletion of RORα in mouse Tregs led to exaggerated eosinophilia driven by interleukin-5 (IL-5) production by ILC2s and TH 2 cells...
March 2, 2018: Science Immunology
https://www.readbyqxmd.com/read/29496881/%C3%AE-2-adrenergic-receptor-mediated-negative-regulation-of-group-2-innate-lymphoid-cell-responses
#18
Saya Moriyama, Jonathan R Brestoff, Anne-Laure Flamar, Jesper B Moeller, Christoph S N Klose, Lucille C Rankin, Naomi A Yudanin, Laurel A Monticelli, Gregory Garbès Putzel, Hans-Reimer Rodewald, David Artis
The type 2 inflammatory response is induced by various environmental and infectious stimuli. Although recent studies identified group 2 innate lymphoid cells (ILC2s) as potent sources of type 2 cytokines, the molecular pathways controlling ILC2 responses are incompletely defined. Here we demonstrate that murine ILC2s express the β2 -adrenergic receptor (β2 AR) and colocalize with adrenergic neurons in the intestine. β2 AR deficiency resulted in exaggerated ILC2 responses and type 2 inflammation in intestinal and lung tissues...
March 2, 2018: Science
https://www.readbyqxmd.com/read/29492980/group-2-innate-lymphocytes-at-the-interface-between-innate-and-adaptive-immunity
#19
REVIEW
Martijn J Schuijs, Timotheus Y F Halim
Group 2 innate lymphoid cells (ILC2) are innate immune cells that respond rapidly to their environment through soluble inflammatory mediators and cell-to-cell interactions. As tissue-resident sentinels, ILC2 help orchestrate localized type 2 immune responses. These ILC2-driven type 2 responses are now recognized in diverse immune processes, different anatomical locations, and homeostatic or pathological settings. ILC2-derived cytokines and cell surface signaling molecules function as key regulators of innate and adaptive immunity...
March 1, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29475849/dysregulated-invertebrate-tropomyosin-dectin-1-interaction-confers-susceptibility-to-allergic-diseases
#20
Naina Gour, Stephane Lajoie, Ursula Smole, Marquitta White, Donglei Hu, Pagé Goddard, Scott Huntsman, Celeste Eng, Angel Mak, Sam Oh, Jung-Hyun Kim, Annu Sharma, Sophie Plante, Ikhlass Haj Salem, Yvonne Resch, Xiao Xiao, Nu Yao, Anju Singh, Susanne Vrtala, Jamila Chakir, Esteban G Burchard, Andrew P Lane, Marsha Wills-Karp
The key factors underlying the development of allergic diseases-the propensity for a minority of individuals to develop dysfunctional responses to harmless environmental molecules-remain undefined. We report a pathway of immune counter-regulation that suppresses the development of aeroallergy and shrimp-induced anaphylaxis. In mice, signaling through epithelially expressed dectin-1 suppresses the development of type 2 immune responses through inhibition of interleukin-33 (IL-33) secretion and the subsequent recruitment of IL-13-producing innate lymphoid cells...
February 23, 2018: Science Immunology
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