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IL-21

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https://www.readbyqxmd.com/read/29684754/increases-in-helminth-induced-il-21-protein-levels-disappear-upon-sample-freezing
#1
Anupama Ariyaratne, Edina K Szabo, Joel Bowron, Constance A M Finney
IL-21 is a much studied cytokine that has been implicated in the regulation of TH1, TH2, TH17 and regulatory immune responses; its signalling is a promising therapeutic target for autoimmune, inflammatory and infectious diseases. Despite its biological importance, measuring IL-21 reliably has proved difficult. ELISAs are commonly used to measure cytokines in various biological samples. However, results obtained are only as good as the quality of the sample. Here, we show that when using fresh samples, a significant increase in IL-21 was measured in the intestinal homogenate of mice infected with the intestinal worm Heligmosomoides polygyrus...
April 20, 2018: Cytokine
https://www.readbyqxmd.com/read/29683891/il-21-increases-the-reactivity-of-allogeneic-human-v%C3%AE-9v%C3%AE-2-t-cells-against-primary-glioblastoma-tumors
#2
Noémie Joalland, Cynthia Chauvin, Lisa Oliver, François M Vallette, Claire Pecqueur, Ulrich Jarry, Emmanuel Scotet
Glioblastoma multiforme (GBM) remains the most frequent and deadliest primary brain tumor in adults despite aggressive treatments, because of the persistence of infiltrative and resistant tumor cells. Nonalloreactive human Vγ9Vδ2 T lymphocytes, the major peripheral γδ T-cell subset in adults, represent attractive effectors for designing immunotherapeutic strategies to track and eliminate brain tumor cells, with limited side effects. We analyzed the effects of ex vivo sensitizations of Vγ9Vδ2 T cells by IL-21, a modulating cytokine, on their cytolytic reactivity...
April 20, 2018: Journal of Immunotherapy
https://www.readbyqxmd.com/read/29683413/increased-circulating-follicular-regulatory-t-like-cells-may-play-a-critical-role-in-chronic-hepatitis-b-virus-infection-and-disease-progression
#3
Xiaojuan Wu, Zhenzhen Su, Bei Cai, Lin Yan, Yamei Li, Weihua Feng, Lanlan Wang
Follicular helper T cells (TFH) and follicular regulatory T cells (TFR), subsets of T cells, co-regulate the reactions of germinal center (GC) B cells. TFH provide help to the GC response, while the TFR suppress those processes. Nevertheless, the role of circulating TFR (cTFR) and circulating TFH (cTFH) in chronic hepatitis B virus (HBV) infection remains limited. Twenty healthy controls (HCs), 24 patients with chronic hepatitis B (CHB), 23 with HBV-related liver cirrhosis (LC), and 18 with HBV-related hepatocellular carcinoma were enrolled in our study between October 2015 and September 2016...
April 23, 2018: Viral Immunology
https://www.readbyqxmd.com/read/29682722/the-role-of-tgf-%C3%AE-in-th17-differentiation
#4
REVIEW
Song Zhang
Th17 cells play critical roles in inflammatory and autoimmune diseases. The lineage-specific transcription factor RORγt is the key regulator for Th17 cell fate commitment. A substantial number of studies have established the importance of TGF-β-dependent pathways in inducing RORγt expression and Th17 differentiation. TGF-β superfamily members TGF-β1, TGF-β3, or activin A, in concert with IL-6 or IL-21 differentiate naïve T cells into Th17 cells. Alternatively, Th17 differentiation can occur through TGF-β-independent pathways...
April 23, 2018: Immunology
https://www.readbyqxmd.com/read/29672235/interleukin-7-regulates-t-follicular-helper-cell-function-in-patients-with-chronic-hepatitis-c
#5
Zhi-Hong Zhang, Ben-Chun Jiang, Xiao-Hong Liu, Meng-Xuan Zhang, Zhen-Sheng-Nan Li, Guang-Ze Zhu
Signaling through interleukin (IL)-7 is essential and required for development, differentiation, proliferation, and homeostasis of T cells. However, the role of IL-7 in regulation of CD4+ T cells in chronic viral infections was not fully elucidated. Thus, the aim of the current study was to investigate the immunomodulatory activity of IL-7 to T follicular helper (Tfh) cells and its contribution to pathogenesis of chronic HCV, hepatitis C virus (HCV) infection. A total of 47 patients with chronic hepatitis C and 19 normal controls were enrolled...
April 19, 2018: Viral Immunology
https://www.readbyqxmd.com/read/29670614/human-v%C3%AE-9v%C3%AE-2-t-cells-synergize-cd4-t-follicular-helper-cells-to-produce-influenza-virus-specific-antibody
#6
Qingyun Chen, Kun Wen, Aizhen Lv, Ming Liu, Ke Ni, Zheng Xiang, Yinping Liu, Wenwei Tu
Human Vγ9Vδ2-T cells recognize nonpeptidic antigens and exert effector functions against microorganisms and tumors, but little is known about their roles in humoral immune response against influenza virus infection. Herein, in the coculture of autologous human B cells, dendritic cells and/or naïve CD4 T cells, and Vγ9Vδ2-T cells, we demonstrated that Vγ9Vδ2-T cells could facilitate H9N2 influenza virus-specific IgG and IgM productions in a CD4 T cell-dependent manner. Vγ9Vδ2-T cells promoted the differentiation of CXCR5+ PD1+ CD4+ T follicular helper (Tfh) cells, CD19+ IgD- CD38++ plasma cells (PCs), and drove B cell proliferation as well as immunoglobulin class switching...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29665930/-system-amplifying-nk-cells-using-mononuclear-cell-culture
#7
Shi-Jian Huang, Hong-Min Yan, Zi-Kuan Guo
OBJECTIVE: To develop an easy method to amplify natural killer (NK) cells by using mononuclear cells in vitro, so as to lay the basis for NK cell therapy. METHODS: Umbilical cord blood from 3 healthy full-term pregnant women was collected, and the peripheral blood mononuclear cells (PBMNC) were harvested by density gradient centrifugation. Each sample of PBMNC was divided into 3 groups: CD16mAb, CD3 mAb and CD16mAb+CD3mAb- groups. The culture flasks were pre-coated with CD16, CD3 or CD3 plus CD16 mAb...
April 2018: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29664568/the-role-of-cytokines-in-t-cell-memory-in-health-and-disease
#8
REVIEW
Miro E Raeber, Yves Zurbuchen, Daniela Impellizzieri, Onur Boyman
Upon stimulation with their cognate antigen, naive T cells undergo proliferation and differentiation into effector cells, followed by apoptosis or survival as precursors of long-lived memory cells. These phases of a T-cell response and the ensuing maintenance of memory T cells are shaped by cytokines, most notably interleukin-2 (IL-2), IL-7, and IL-15 that share the common γ chain (γc ) cytokine receptor. Steady-state production of IL-7 and IL-15 is necessary for background proliferation and homeostatic survival of CD4+ and CD8+ memory T cells...
May 2018: Immunological Reviews
https://www.readbyqxmd.com/read/29649077/circulating-cxcr5-expressing-cd8-t-cells-are-major-producers-of-il-21-and-associate-with-limited-hiv-replication
#9
Federico Perdomo-Celis, Natalia A Taborda, Maria T Rugeles
BACKGROUND: Despite advances made with the highly active anti-retroviral therapy (HAART) in the control of the human immunodeficiency virus 1 (HIV) infection, a cure has not been achieved due to the persistence of viral reservoirs. The major HIV reservoirs remain in the lymphoid follicles due to, among other factors, the partial absence of CD8T-cells in these structures. Recently, lymphoid follicle-confined and circulating CD8T-cells expressing the C-X-C chemokine receptor type 5 (CXCR5) were described, possessing antiviral mechanisms which could help to control HIV replication...
April 10, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29626602/protective-properties-of-combined-fungal-polysaccharides-from-cordyceps-sinensis-and-ganoderma-atrum-on-colon-immune-dysfunction
#10
Song-Tao Fan, Shao-Ping Nie, Xiao-Jun Huang, Sunan Wang, Jie-Lun Hu, Jun-Hua Xie, Qi-Xing Nie, Ming-Yong Xie
In vivo an ecological network of polysaccharides utilization by gut microbiota is not only an intense competition but also an impressive cooperation pattern. The present study evaluated the in vivo protective effect of combined fungal polysaccharides (CFP) from Cordyceps sinensis and Ganoderma atrum on colon immune dysfunction, induced by 150 mg/kg cyclophosphamide (CP). The results showed that C. sinensis polysaccharides (CSP) significantly promoted microbial-derived butyrate to improve histone h3 acetylation mediating regulatory T (Treg) cell specific Foxp3, as well as significantly restored CP-induced elevation of interleukin (IL)-17 and IL-21...
April 4, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29626172/-that-s-not-helping-t-follicular-helper-cells-drive-skin-fibrosis
#11
Rachael A Clark
T follicular helper-like cells and IL-21 are drivers of skin fibrosis in systemic sclerosis.
April 6, 2018: Science Immunology
https://www.readbyqxmd.com/read/29626170/the-receptor-repertoire-and-functional-profile-of-follicular-t-cells-in-hiv-infected-lymph-nodes
#12
Ben S Wendel, Daniel Del Alcazar, Chenfeng He, Perla M Del Río-Estrada, Benjamas Aiamkitsumrit, Yuria Ablanedo-Terrazas, Stefany M Hernandez, Ke-Yue Ma, Michael R Betts, Laura Pulido, Jun Huang, Phyllis A Gimotty, Gustavo Reyes-Terán, Ning Jiang, Laura F Su
Follicular helper CD4+ T cells (TFH ) play an integral role in promoting B cell differentiation and affinity maturation. Whereas TFH cell frequencies are increased in lymph nodes (LNs) from individuals infected with HIV, humoral immunity remains impaired during chronic HIV infection. Whether HIV inhibits TFH responses in LNs remains unclear. Advances in this area have been limited by the difficulty of accessing human lymphoid tissues. Here, we combined high-dimensional mass cytometry with T cell receptor repertoire sequencing to interrogate the composition of TFH cells in primary human LNs...
April 6, 2018: Science Immunology
https://www.readbyqxmd.com/read/29623491/the-complex-alteration-in-the-network-of-il-17-type-cytokines-in-patients-with-hereditary-angioedema
#13
Francesco Arcoleo, Mariangela Lo Pizzo, Gabriella Misiano, Salvatore Milano, Giuseppina Colonna Romano, Vito Muggeo, Enrico Cillari
Hereditary angioedema (HAE) is a rare autosomic-dominant disorder characterized by a deficiency of C1 esterase inhibitor which causes episodic swellings of subcutaneous tissues, bowel walls and upper airways that are disabling and potentially life-threatening. We evaluated n = 17 patients with confirmed HAE diagnosis during attack and remission state and n = 19 healthy subjects. The samples were tested for a panel of IL (Interleukin)-17-type cytokines (IL-1β, IL-6, IL-10, granulocyte-macrophage colony stimulating factor (GM-CSF), IL-17, IL-21, IL-22, IL-23) and transforming growth factor-beta (TGF-β) subtypes...
April 6, 2018: Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/29616746/interleukin-21-treatment-in-a-murine-model-as-a-novel-potential-cytokine-immunotherapy-for-colon-cancer
#14
Chen Chen, Xiaoning Liu, Yi Ren
BACKGROUND: Interleukin 21 (IL-21), which belongs to the common γ-chain (γc) family, is a novel tumor suppressor that has been shown to affect T-cell proliferation, survival and function. However, the role of IL-21 in colon cancer remains unclear. OBJECTIVES: We sought to determine whether IL-21 could inhibit the progression of colon cancer in mice; we also explored the mechanisms underlying the immunological effects of IL-21 in colon cancer. MATERIAL AND METHODS: Exogenous IL-21 protein was expressed to treat tumor-bearing mice and the production of cytokine interleukin 4, interferon gamma and lambda from CD4+ T, CD8+ T, and NK cells were measured, along with the survival times of these tumor-bearing mice...
March 21, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29615515/a-hierarchy-of-affinities-between-cytokine-receptors-and-the-common-gamma-chain-leads-to-pathway-cross-talk
#15
Pauline Gonnord, Bastian R Angermann, Kaitlyn Sadtler, Erin Gombos, Pascal Chappert, Martin Meier-Schellersheim, Rajat Varma
Cytokines belonging to the common gamma chain (γc ) family depend on the shared γc receptor subunit for signaling. We report the existence of a fast, cytokine-induced pathway cross-talk acting at the receptor level, resulting from a limiting amount of γc on the surface of T cells. We found that this limited abundance of γc reduced interleukin-4 (IL-4) and IL-21 responses after IL-7 preexposure but not vice versa. Computational modeling combined with quantitative experimental assays indicated that the asymmetric cross-talk resulted from the ability of the "private" IL-7 receptor subunits (IL-7Rα) to bind to many of the γc molecules even before stimulation with cytokine...
April 3, 2018: Science Signaling
https://www.readbyqxmd.com/read/29615398/il-21-therapy-combined-with-pd-1-and-tim-3-blockade-provides-enhanced-nk-cell-antitumor-activity-against-mhc-class-i-deficient-tumors
#16
Hyungseok Seo, Byung-Seok Kim, Eun-Ah Bae, Byung Soh MIn, Yoon Dae Han, Sang Joon Shin, Chang-Yuil Kang
Increased expression of co-inhibitory molecules such as PD-1 and Tim-3 on NK cells has been demonstrated in advanced cancer patients who harbor MHC class I-deficient tumors. However, even in preclinical models, the antitumor effects of checkpoint blockade on NK cells have not been clearly elucidated. Here, we show that anti-PD-1/anti-Tim-3 treatment suppressed tumor progression in mice bearing MHC class I-deficient tumors, and the suppression was further enhanced by recombinant IL21(rIL21) treatments through an NK cell-dependent mechanism...
April 3, 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29609271/-killing-effect-of-robo1-targeted-chimeric-antigen-receptor-modified-nk92-cells-against-glioma-and-neuroblastoma-cells
#17
Y Qu, J Z Bi
Objective: To study the cytotoxicity of Robo1-CAR-NK92 cells against U87-MG and SH-SY5Y cells, to explore the effects of IL-15, IL-21 and dexamethasone on the proliferation, survival and cytotoxicity of Robo1-CAR-NK92 cells and to optimize the culture protocol. Methods: Robo1-CAR-NK92 cells were constructed by lentivirus transfection.The Robo1 car positive cells were sorted, expanded and detected by flow cytometry.The levels of Robo1 expression in SH-SY5Y and U87-MG cells were examined by flow cytometry.The cytotoxicity of Robo1-CAR-NK92 or NK92 cells against target cells was tested by CCK-8 and live cell imaging...
March 20, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29600943/silent-arterial-inflammation-during-the-apparent-remission-state-of-takayasu-s-arteritis-what-do-cytokines-tell-us
#18
Bruna Savioli, Bruno Ramos Salu, Marlon Vilela de Brito, Maria Luiza Vilela Oliva, Alexandre W S de Souza
OBJECTIVES: To evaluate serum cytokines as biomarkers of smoldering disease activity in patients with Takayasu's arteritis (TAK) in remission. METHODS: Thirty-four TAK patients with stable disease during the last 6 months and 22 healthy controls (HC) were included in a cross-sectional study. Serum levels of pro-inflammatory, anti-inflammatory, Th1, Th2, Th9, Th17 and Th22 cytokines were measured by the multiplex technique. RESULTS: No significant differences regarding serum cytokine levels were found between TAK patients and HC...
March 19, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29595664/roles-of-t-follicular-helper-cells-in-the-pathogenesis-of-adenoidal-hypertrophy-combined-with-secretory-otitis-media
#19
Chunyan Feng, Qicheng Zhang, Guangquan Zhou, Jing Zhang, Yanshu Zhang
The aim of this study was to investigate the roles of T follicular helper (Tfh) cells in secretory otitis media (SOM) combined with adenoidal hypertrophy (AH).Patients with AH or AH combined with SOM admitted to the Yancheng No. 1 People's Hospital from December 2012 to December 2014 were included. Fourteen age-matched healthy individuals received physical examinations in the hospital served as control. The venous Tfh was determined using flow cytometry, and CD3 + CD4 + CXCR5 + T lymphocytes were defined as Tfh cells...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29593732/a-distinct-t-follicular-helper-cell-subset-infiltrates-the-brain-in-murine-neuropsychiatric-lupus
#20
Shweta Jain, Ariel Stock, Fernando Macian, Chaim Putterman
Neuropsychiatric symptoms in systemic lupus erythematosus (SLE) are not uncommon, yet the mechanisms underlying disease initiation and progression in the brain are incompletely understood. Although the role of T cells in other lupus target organs such as the kidney is well defined, which T cells contribute to the pathogenesis of neuropsychiatric SLE is not known. The present study was aimed at characterizing the CD4 T cell populations that are present in the choroid plexus (CP) of MRL/MpJ-fas lpr mice, the primary site of brain infiltration in this classic lupus mouse model which exhibits a prominent neurobehavioral phenotype...
2018: Frontiers in Immunology
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