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https://www.readbyqxmd.com/read/28926546/-t-betting-on-innate-lymphoid-cells-in-cns-inflammatory-disease
#1
Melissa A Brown, Abigail E Russi
No abstract text is available yet for this article.
September 19, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28922373/dynein-light-chain-regulates-adaptive-and-innate-b-cell-development-by-distinctive-genetic-mechanisms
#2
Ashleigh King, Lingli Li, David M Wong, Rui Liu, Rebecca Bamford, Andreas Strasser, David M Tarlinton, Jörg Heierhorst
Mechanistic differences in the development and function of adaptive, high-affinity antibody-producing B-2 cells and innate-like, "natural" antibody-producing B-1a cells remain poorly understood. Here we show that the multi-functional dynein light chain (DYNLL1/LC8) plays important roles in the establishment of B-1a cells in the peritoneal cavity and in the ongoing development of B-2 lymphoid cells in the bone marrow of mice. Epistasis analyses indicate that Dynll1 regulates B-1a and early B-2 cell development in a single, linear pathway with its direct transcriptional activator ASCIZ (ATMIN/ZNF822), and that the two genes also have complementary functions during late B-2 cell development...
September 18, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28921511/bone-marrow-ilc2s-a-local-source-of-il-5-in-il-33-driven-eosinophilia
#3
Kristina Johansson, Carina Malmhäll, Patricia Ramos-Ramírez, Madeleine Rådinger
T helper type 2 (TH 2) cells, type 2 innate lymphoid cells (ILC2s) and eosinophil progenitors have previously been described to produce IL-5 in the airways upon allergen provocation or by direct administration of IL-33. Eosinophilic airway inflammation is known to be associated with IL-5-dependent eosinophil development in the bone marrow, however, the source of IL-5 remains unclear. TH cells, ILC2s and CD34(+) progenitors have been proposed to be involved in this process, therefore, we investigated whether these cells are taking part in eosinophilopoiesis by producing IL-5 locally in the bone marrow in IL-33-driven inflammation...
September 16, 2017: Immunology
https://www.readbyqxmd.com/read/28921473/the-development-and-diversity-of-ilcs-nk-cells-and-their-relevance-in-health-and-diseases
#4
Yuxia Zhang, Bing Huang
Next to T and B cells, natural killer (NK) cells are the third largest lymphocyte population. They are recently re-categorized as innate lymphocytes (ILCs), which also include ILC1, ILC2, ILC3, and the lymphoid tissue inducer (LTi) cells. Both NK cells and ILC1 cells are designated as group 1 ILCs because they secrete interferon-γ (IFN-γ) and tumor necrosis factor (TNF). However, in contrast to ILC1 and all other ILCs, NK cells possess potent cytolytic functions that resemble cytotoxic T lymphocytes (CTL)...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28917723/increased-innate-type-2-immune-response-in-house-dust-mite-allergic-patients-with-allergic-rhinitis
#5
Hua Zhong, Xing-Liang Fan, Qiu-Ning Yu, Zi-Li Qin, Dong Chen, Rui Xu, De-Hua Chen, Zhi-Bin Lin, Weiping Wen, Qing-Ling Fu
Group 2 innate lymphoid cells (ILC2s) are essential in initiating and driving allergic immune responses. However, there were inconsistent findings of the ILC2 levels in allergic rhinitis (AR) patients. This study investigated the ILC2 levels in the peripheral blood of house dust mite (HDM)-allergic AR patients and their ability to secrete type 2 cytokines. The levels of ILC2s with phenotypic ILC2 characteristics were increased in the HDM-AR patients. The AR patients' symptom score and IL-13 levels were positively associated with the ILC2s in HDM-AR patients...
September 13, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28916968/hmgb-proteins-and-arthritis
#6
REVIEW
Noboru Taniguchi, Yasuhiko Kawakami, Ikuro Maruyama, Martin Lotz
The high-mobility group box (HMGB) family includes four members: HMGB1, 2, 3 and 4. HMGB proteins have two functions. In the nucleus, HMGB proteins bind to DNA in a DNA structure-dependent but nucleotide sequence-independent manner to function in chromatin remodeling. Extracellularly, HMGB proteins function as alarmins, which are endogenous molecules released upon tissue damage to activate the immune system. HMGB1 acts as a late mediator of inflammation and contributes to prolonged and sustained systemic inflammation in subjects with rheumatoid arthritis...
September 15, 2017: Human Cell
https://www.readbyqxmd.com/read/28916644/subset-and-tissue-defined-stat5-thresholds-control-homeostasis-and-function-of-innate-lymphoid-cells
#7
Alejandro V Villarino, Giuseppe Sciumè, Fred P Davis, Shigeru Iwata, Beatrice Zitti, Gertraud W Robinson, Lothar Hennighausen, Yuka Kanno, John J O'Shea
Innate lymphoid cells (ILCs) patrol environmental interfaces to defend against infection and protect barrier integrity. Using a genetic tuning model, we demonstrate that the signal-dependent transcription factor (TF) STAT5 is critical for accumulation of all known ILC subsets in mice and reveal a hierarchy of STAT5 dependency for populating lymphoid and nonlymphoid tissues. We apply transcriptome and genomic distribution analyses to define a STAT5 gene signature in natural killer (NK) cells, the prototypical ILC subset, and provide a systems-based molecular rationale for its key functions downstream of IL-15...
September 15, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28915559/zbtb1-controls-nkp46-ror-gamma-t-innate-lymphoid-cell-ilc3-development
#8
Ying Lu, Xianyu Zhang, Nicolas Bouladoux, Saransh Neel Kaul, Kangxin Jin, Derek Sant'Angelo, Yasmine Belkaid, Damian Kovalovsky
Innate lymphoid cells (ILCs) play a central role conferring protection at the mucosal frontier. In this study, we have identified a requirement of the transcription factor Zbtb1 for the development of RORγt(+) ILCs (ILC3s). Zbtb1-deficient mice lacked NKp46(+) ILC3 cells in the lamina propria of the small and large intestine. This requirement of Zbtb1 was cell intrinsic, as NKp46(+) ILC3s were not generated from Zbtb1-deficient progenitors in bone marrow chimeras and Zbtb1-deficient RORγt(+) CCR6(-)NKp46(-) ILC3s didn't generate NKp46(+) ILC3s in co-cultures with OP9-DL1 stroma...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28915450/molecular-signature-and-functional-analysis-of-uterine-ilcs-in-mouse-pregnancy
#9
Minmin Li, Yimin Gao, Liang Yong, Dake Huang, Jijia Shen, Miao Liu, Cuiping Ren, Xin Hou
In addition to natural killer cells, other innate lymphoid cells have recently been identified in the mouse and human uterus, but their roles in successful pregnancy remain poorly defined. In this study, we examined the dynamic changes of uterine innate lymphoid cells throughout pregnancy in mice. We found that the total number of uterine innate lymphoid cells markedly increased at early-gestation. Among the three groups of uterine innate lymphoid cells, the number of the group 2 uterine innate lymphoid cells increased the most during pregnancy...
September 8, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28915080/weight-adjusted-intravenous-reslizumab-in-severe-asthma-with-inadequate-response-to-fixed-dose-subcutaneous-mepolizumab
#10
Manali Mukherjee, Fernando Aleman Paramo, Melanie Kjarsgaard, Brittany Salter, Gayatri Nair, Nicola LaVigne, Katherine Radford, Roma Sehmi, Parameswaran Nair
BACKGROUND: Clinical benefits of fixed-dose 100 mg subcutaneous (SC) mepolizumab in prednisone-dependent patients are modest when sputum eosinophilia is not adequately controlled. This study compared treatment response of weight-adjusted intravenous (IV) Reslizumab in patients previously treated with 100 mg SC Mepolizumab. METHOD: 10 prednisone-dependent asthmatics (sputum eosinophils >3% and blood eosinophils > 300cells/μL), who had previously received Mepolizumab (100 mg SC Q4W) for at least 1 year, received two infusions of placebo (Q4W) followed by 4 infusions of 3...
September 15, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28912783/sex-differences-in-asthma-a-key-role-of-androgen-signaling-in-group-2-innate-lymphoid-cells
#11
REVIEW
Sophie Laffont, Eve Blanquart, Jean-Charles Guéry
Infectious diseases, autoimmune diseases, and also allergy differentially affect women and men. In general, women develop strongest immune responses and thus the proportion of infected individuals and the severity of many viral, bacterial, or parasitic infections are increased in men. However, heightened immunity in women makes them more susceptible than men to autoimmunity and allergy. While sex differences in immunity are well documented, little is known about the cellular and molecular mechanisms underlying these immunological differences, particularly in allergic asthma...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28912776/human-cd5-innate-lymphoid-cells-are-functionally-immature-and-their-development-from-cd34-progenitor-cells-is-regulated-by-id2
#12
Maho Nagasawa, Kristine Germar, Bianca Blom, Hergen Spits
Innate lymphoid cells (ILCs) have emerged as a key cell type involved in surveillance and maintenance of mucosal tissues. Mouse ILCs rely on the transcriptional regulator Inhibitor of DNA-binding protein 2 (Id2) for their development. Here, we show that Id2 also drives development of human ILC because forced expression of Id2 in human thymic progenitors blocked T cell commitment, upregulated CD161 and promyelocytic leukemia zinc finger (PLZF), and maintained CD127 expression, markers that are characteristic for human ILCs...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28912020/intestinal-dysbiosis-featuring-abundance-of-ruminococcus-gnavus-associates-with-allergic-diseases-in-infants
#13
Huey-Huey Chua, Hung-Chieh Chou, Ya-Ling Tung, Bor-Luen Chiang, Chien-Chia Liao, Hong-Hsing Liu, Yen-Hsuan Ni
BACKGROUND & AIMS: Dysbiosis of the intestinal microbiota has been associated with development of allergies in infants. However, it is not clear what microbes might contribute to this process. We investigated what microbe(s) might be involved in analyses of infant twins and mice. METHODS: We studied fecal specimens prospectively in a twin cohort (n=30) and age-matched singletons (n=14) born at National Taiwan University Children's Hospital, Taipei, Taiwan, from April 2011 to March 2013...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28902842/the-neuropeptide-nmu-amplifies-ilc2-driven-allergic-lung-inflammation
#14
Antonia Wallrapp, Samantha J Riesenfeld, Patrick R Burkett, Raja-Elie E Abdulnour, Jackson Nyman, Danielle Dionne, Matan Hofree, Michael S Cuoco, Christopher Rodman, Daneyal Farouq, Brian J Haas, Timothy L Tickle, John J Trombetta, Pankaj Baral, Christoph S N Klose, Tanel Mahlakõiv, David Artis, Orit Rozenblatt-Rosen, Isaac M Chiu, Bruce D Levy, Monika S Kowalczyk, Aviv Regev, Vijay K Kuchroo
Type 2 innate lymphoid cells (ILC2s) both contribute to mucosal homeostasis and initiate pathologic inflammation in allergic asthma. However, the signals that direct ILC2s to promote homeostasis versus inflammation are unclear. To identify such molecular cues, we profiled mouse lung-resident ILCs using single-cell RNA sequencing at steady state and after in vivo stimulation with the alarmin cytokines IL-25 and IL-33. ILC2s were transcriptionally heterogeneous after activation, with subpopulations distinguished by expression of proliferative, homeostatic and effector genes...
September 13, 2017: Nature
https://www.readbyqxmd.com/read/28895956/atopic-dermatitis-skin-care-and-topical-therapies
#15
David M Fleischer, Jeremy Udkoff, Jenna Borok, Adam Friedman, Noreen Nicol, Jeffrey Bienstock, Peter Lio, Megha M Tollefson, Lawrence F Eichenfield
Atopic dermatitis (AD) pathogenesis is strongly influenced by Type 2 innate lymphoid cell and T-helper cell type 2 lymphocyte-driven inflammation and skin barrier dysfunction. AD therapies attempt to correct this pathology, and guidelines suggest suggest basics of AD therapy, which include repair of the skin barrier through bathing practices and moisturizers, infection control, and further lifestyle modifications to avoid and reduce AD triggers.While some patients' AD may be controlled using these measures, inflammatory eczema including acute flares and maintenance therapy in more severe patients are treated with topical pharmacologic agents such as topical corticosteroids, topical calcineurin inhibitors, and, more recently, topical PDE-4 inhibitors...
September 2017: Seminars in Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28895020/role-of-type-2-innate-lymphoid-cells-in-allergic-diseases
#16
REVIEW
Lorenzo Cosmi, Francesco Liotta, Laura Maggi, Francesco Annunziato
PURPOSE OF REVIEW: The adaptive immune response orchestrated by type 2 T helper (Th2) lymphocytes, strictly cooperates with the innate response of group 2 innate lymphoid cells (ILC2), in the protection from helminths infection, as well as in the pathogenesis of allergic disease. The aim of this review is to explore the pathogenic role of ILC2 in different type 2-mediated disorders. RECENT FINDINGS: Recent studies have shown that epithelial cell-derived cytokines and their responding cells, ILC2, play a pathogenic role in bronchial asthma, chronic rhinosinusitis, and atopic dermatitis...
September 11, 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28894445/adipose-tissue-inflammation-induces-b-cell-inflammation-and-decreases-b-cell-function-in-aging
#17
REVIEW
Daniela Frasca, Bonnie B Blomberg
Aging is the greatest risk factor for developing chronic diseases. Inflamm-aging, the age-related increase in low-grade chronic inflammation, may be a common link in age-related diseases. This review summarizes recent published data on potential cellular and molecular mechanisms of the age-related increase in inflammation, and how these contribute to decreased humoral immune responses in aged mice and humans. Briefly, we cover how aging and related inflammation decrease antibody responses in mice and humans, and how obesity contributes to the mechanisms for aging through increased inflammation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28893953/fate-decision-between-group-3-innate-lymphoid-and-conventional-nk-cell-lineages-by-notch-signaling-in-human-circulating-hematopoietic-progenitors
#18
Seishi Kyoizumi, Yoshiko Kubo, Junko Kajimura, Kengo Yoshida, Tomonori Hayashi, Kei Nakachi, Malcolm A Moore, Marcel R M van den Brink, Yoichiro Kusunoki
The role of Notch signaling in human innate lymphoid cell (ILC) differentiation is unclear, although IL-7 and IL-15 promote differentiation of natural cytotoxicity receptor (NCR) NKp44(+) group 3 ILCs (NCR(+)ILC3s) and conventional NK (cNK) cells from CD34(+) hematopoietic progenitor cells (HPCs) ex vivo. In this study, we analyzed the functions of Notch in the differentiation of NCR(+)ILC3s and cNK cells from human HPC subpopulations circulating in peripheral blood by limiting dilution and clonal assays using high-throughput flow cytometry...
September 11, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28891433/innate-lymphoid-cells-mediate-pulmonary-eosinophilic-inflammation-airway-mucous-cell-metaplasia-and-type-2-immunity-in-mice-exposed-to-ozone
#19
Kazuyoshi Kumagai, Ryan P Lewandowski, Daven N Jackson-Humbles, Nicholas Buglak, Ning Li, Kaylin White, Steven J Van Dyken, James G Wagner, Jack R Harkema
Exposure to elevated levels of ambient ozone in photochemical smog is associated with eosinophilic airway inflammation and nonatopic asthma in children. In the present study, we determined the role of innate lymphoid cells (ILCs) in the pathogenesis of ozone-induced nonatopic asthma by using lymphoid cell-sufficient C57BL/6 mice, ILC-sufficient Rag2(-/-) mice (devoid of T and B cells), and ILC-deficient Rag2(-/-)Il2rg(-/-) mice (depleted of all lymphoid cells including ILCs). Mice were exposed to 0 or 0.8 parts per million ozone for 1 day or 9 consecutive weekdays (4 hr/day)...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28880992/innate-lymphoid-cells-at-the-interface-between-obesity-and-asthma
#20
REVIEW
Laetitia Everaere, Saliha Ait Yahia, Mélodie Bouté, Camille Audousset, Cécile Chenivesse, Anne Tsicopoulos
Obesity and asthma prevalence has dramatically and concomitantly increased over the last 25 years, and many epidemiological studies have highlighted obesity as an important risk factor for asthma. Although many studies have been performed, the underlying mechanisms remain poorly understood. Innate mechanisms have been involved in both diseases in particular through the recently described innate lymphoid cells (ILCs). ILCs are subdivided in three groups that are defined by their cytokine production and by their master transcription factor expression, in sharp correlation with their T helper counterparts...
September 7, 2017: Immunology
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