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Il-10+ B cells

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https://www.readbyqxmd.com/read/28730070/inhibition-effect-of-curcumin-on-uvb-induced-secretion-of-pro-inflammatory-cytokines-from-corneal-limbus-epithelial-cells
#1
Shih-Chun Chao, Dan-Ning Hu, Joan Roberts, Xilun Shen, Chia-Yi Lee, Chan-Wei Nien, Hung-Yu Lin
AIM: To study the effects of curcumin on the secretion of interleukin (IL)-6 and IL-8 by corneal limbus epithelial cells. METHODS: Human corneal limbus epithelial cells were isolated and cultured from donor eyes and irradiated by UVB at different dosages with or without curcumin. MTT test was used for studying the effects of UVB and curcumin on the cell viability. The role of mitogen-activated protein kinase (MAPK) and nuclear factor-kappa B (NF-κB) pathways on the UVB-induced secretion of IL-6 and IL-8 were tested by addition of their inhibitors to the culture with or without UVB-radiation...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728914/hydroxycinnamoyl-derivatives-and-secoiridoid-glycoside-derivatives-from-syringa-vulgaris-flowers-and-their-effects-on-the-pro-inflammatory-responses-of-human-neutrophils
#2
M K Dudek, B Michalak, M Woźniak, M E Czerwińska, A Filipek, S Granica, A K Kiss
Thirteen new compounds including caffeoyl-glucaric and p-coumaroyl-altraric acid derivatives, one monoterpenoid glucoside, four secoiridoid glycosides, and three hydroxycinnamoyl phenylpropanoid glycosides esterified with an oleoside 11-methyl ester along with fifteen known compounds were isolated from flowers of Syringa vulgaris L. (Oleaceae). Their structures were elucidated by high-resolution spectroscopic methods. The tested compounds were able to decrease the production of reactive oxygen species. Moreover, oleoechinacoside (13), demethylhydroxyoleonuezhenide (14), demethyloleonuezhenide (15), syringaoleoacteoside (25) and oleoacteoside (26) at the concentration of 50μM, moderately suppressed the LPS-stimulated release of pro-inflammatory chemokine IL-8 and TNF-α from human neutrophils...
July 17, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28725429/pretreatment-antigen-specific-immunity-and-regulation-association-with-subsequent-immune-response-to-anti-tumor-dna-vaccination
#3
Laura E Johnson, Brian M Olson, Douglas G McNeel
BACKGROUND: Immunotherapies have demonstrated clinical benefit for many types of cancers, however many patients do not respond, and treatment-related adverse effects can be severe. Hence many efforts are underway to identify treatment predictive biomarkers. We have reported the results of two phase I trials using a DNA vaccine encoding prostatic acid phosphatase (PAP) in patients with biochemically recurrent prostate cancer. In both trials, persistent PAP-specific Th1 immunity developed in some patients, and this was associated with favorable changes in serum PSA kinetics...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28725044/cord-blood-nk-cells-engineered-to-express-il-15-and-a-cd19-targeted-car-show-long-term-persistence-and-potent-anti-tumor-activity
#4
E Liu, Y Tong, G Dotti, H Shaim, B Savoldo, M Mukherjee, J Orange, X Wan, X Lu, A Reynolds, M Gagea, P Banerjee, R Cai, M H Bdaiwi, R Basar, M Muftuoglu, L Li, D Marin, W Wierda, M Keating, R Champlin, E Shpall, K Rezvani
Chimeric antigen receptors (CARs) have been used to redirect the specificity of autologous T-cells against leukemia and lymphoma with promising clinical results.(1-3) Extending this approach to allogeneic T-cells is problematic as they carry a significant risk of graft-versus-host disease (GVHD). Natural killer (NK) cells are highly cytotoxic effectors, killing their targets in a non-antigen specific manner without causing GVHD. Cord blood (CB) offers an attractive, allogeneic, off-the-self source of NK cells for immunotherapy...
July 20, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28724377/combination-therapy-for-melanoma-with-braf-mek-inhibitor-and-immune-checkpoint-inhibitor-a-mathematical-model
#5
Xiulan Lai, Avner Friedman
BACKGROUND: The B-raf gene is mutated in up to 66% of human malignant melanomas, and its protein product, BRAF kinase, is a key part of RAS-RAF-MEK-ERK (MAPK) pathway of cancer cell proliferation. BRAF-targeted therapy induces significant responses in the majority of patients, and the combination BRAF/MEK inhibitor enhances clinical efficacy, but the response to BRAF inhibitor and to BRAF/MEK inhibitor is short lived. On the other hand, treatment of melanoma with an immune checkpoint inhibitor, such as anti-PD-1, has lower response rate but the response is much more durable, lasting for years...
July 19, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28723951/cd8-t-cells-provide-immune-protection-against-murine-disseminated-endotheliotropic-orientia-tsutsugamushi-infection
#6
Guang Xu, Nicole L Mendell, Yuejin Liang, Thomas R Shelite, Yenny Goez-Rivillas, Lynn Soong, Donald H Bouyer, David H Walker
Scrub typhus, caused by a Gram-negative obligately intracellular coccobacillus, Orientia tsutsugamushi, is a long neglected but important tropical disease. Orientia tsutsugamushi causes illness in one million people each year, and 1 billion people are at risk. Without appropriate diagnosis and treatment, the disease can cause severe multiorgan failure with a case fatality rate of 7-15%. The current gaps in knowledge of immunity include the unknown mechanisms of host immunity to O. tsutsugamushi. Using an intravenous (i...
July 19, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28716080/pretreatment-antigen-specific-immunity-and-regulation-association-with-subsequent-immune-response-to-anti-tumor-dna-vaccination
#7
Laura E Johnson, Brian M Olson, Douglas G McNeel
BACKGROUND: Immunotherapies have demonstrated clinical benefit for many types of cancers, however many patients do not respond, and treatment-related adverse effects can be severe. Hence many efforts are underway to identify treatment predictive biomarkers. We have reported the results of two phase I trials using a DNA vaccine encoding prostatic acid phosphatase (PAP) in patients with biochemically recurrent prostate cancer. In both trials, persistent PAP-specific Th1 immunity developed in some patients, and this was associated with favorable changes in serum PSA kinetics...
July 18, 2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28715645/characteristics-of-regulatory-b-cells-in-patients-with-chronic-hepatitis-b-virus-infection-in-different-immune-phases
#8
Guiyang Wang, Yong Liu, Rui Huang, Bei Jia, Ran Su, Zhenhua Sun, Chen Tian, Yali Xiong, Juan Xia, Xiaomin Yan, Zhaoping Zhang, Chao Wu
Regulatory B cells (Bregs) are reported to play an important role in the immune responses to chronic hepatitis B virus (HBV) via Toll-like-receptors (TLRs) signaling. We aimed to investigate the characteristics of Bregs and the expressions of TLRs in Bregs in the peripheral blood of different immune phases of patients with chronic HBV infection. In this study, we determined the frequencies of Bregs and TLR9, TLR2, and TLR4 in peripheral blood using flow cytometry and determined the levels of IL-10 in serum with the Human Magnetic Cytokine/Chemokine Bead Panel...
May 2017: Discovery Medicine
https://www.readbyqxmd.com/read/28713870/il-10-induces-a-stat3-dependent-autoregulatory-loop-in-th2-cells-that-promotes-blimp-1-restriction-of-cell-expansion-via-antagonism-of-stat5-target-genes
#9
Amanda C Poholek, Dragana Jankovic, Alejandro V Villarino, Franziska Petermann, Angela Hettinga, Dror S Shouval, Scott B Snapper, Susan M Kaech, Stephen R Brooks, Golnaz Vahedi, Alan Sher, Yuka Kanno, John J O'Shea
Blimp-1 expression in T cells extinguishes the fate of T follicular helper cells, drives terminal differentiation, and limits autoimmunity. Although various factors have been described to control Blimp-1 expression in T cells, little is known about what regulates Blimp-1 expression in T helper 2 (TH2) cells and the molecular basis of its actions. We report that signal transducer and activator of transcription 3 (STAT3) unexpectedly played a critical role in regulating Blimp-1 in TH2 cells. Furthermore, we found that the cytokine interleukin-10 (IL-10) acted directly on TH2 cells and was necessary and sufficient to induce optimal Blimp-1 expression through STAT3...
October 2016: Science Immunology
https://www.readbyqxmd.com/read/28713164/human-immunodeficiency-virus-type-1-induces-a-regulatory-b-cell-like-phenotype-in-vitro
#10
Jacobo Lopez-Abente, Adrián Prieto-Sanchez, Maria-Ángeles Muñoz-Fernandez, Rafael Correa-Rocha, Marjorie Pion
Individuals infected with human immunodeficiency virus type-1 (HIV-1) usually show a general dysregulation and hyper-activation of the immune system. A direct influence of HIV-1 particles on B-cell phenotypes and functions has been previously described. However, the consequences of B-cell dysregulation are still poorly understood. We evaluated the phenotypic changes in primary B cells after direct contact with HIV-1 particles in comparison with different types of stimuli. The functionality of treated B cells was challenged in co-culture experiments with autologous CD4+ and CD8+ T cells...
July 17, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28713071/association-of-il-2-330t-g-and-il-10-1082a-g-genetic-polymorphisms-with-b-nhl-in-a-cohort-of-egyptians
#11
Hala Aly Abdel Rahman, Mervat Mamdooh Khorshied, Ola Mohamed Reda Khorshid, Heba Mahmoud Mourad
OBJECTIVE: Polymorphisms in IL-2 and IL-10 genes have been known to be associated with increased risk of different immune-dysregulated disorders and cancer as Non Hodgkin Lymphoma (NHL). The aim of the current study was to investigate the possible association between IL-2-330T/G and IL-10-1082A/G genetic variations and B-cell NHL in a cohort of Egyptians. MATERIALS AND METHODS: Genotyping of the candidate genetic variations was performed by polymerase chain reaction (PCR) technique for 100 adult B-NHL patients and 100 age and sex matched healthy blood donors as controls...
July 17, 2017: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/28712894/antimicrobial-and-immunomodulatory-activity-of-host-defense-peptides-clavanins-and-ll-37-in-vitro-an-endodontic-perspective
#12
Stella Maris F Lima, Mirna S Freire, Ana Luisa O Gomes, Ana Paula C Cantuária, Flávia Rodrigues P Dutra, Beatriz S Magalhães, Maurício Gonçalves C Sousa, Ludovico Migliolo, Jeeser A Almeida, Octávio L Franco, Taia Maria B Rezende
Endodontic treatment is mainly based on root canal disinfection and its failure may be motivated by microbial resistance. Endodontic therapy can be benefitted by host defense peptides (HDPs), which are multifunctional molecules that act against persistent infection and inflammation. This study aimed to evaluate the antimicrobial, cytotoxic and immunomodulatory activity of several HDPs, namely clavanin A, clavanin A modified (MO) and LL-37, compared to intracanal medication Ca(OH)2. HDPs and Ca(OH)2 were evaluated by: (1) antimicrobial assays against Candida albicans and Enterococcus faecalis, (2) cytotoxicity assays and (3) cytokine tumor necrosis factor (TNF)-α, monocyte chemoattractant protein (MCP)-1, interleukin (IL)- 1α, IL-6, IL-10 and IL-12 and nitric oxide (NO) production by RAW 264...
July 13, 2017: Peptides
https://www.readbyqxmd.com/read/28708978/methotrexate-combined-with-cyclophosphamide-attenuates-murine-collagen-induced-arthritis-by-modulating-the-expression-level-of-breg-and-dcs
#13
Jinnan Fan, Jing Luo, Caiping Yan, Runxi Hao, Xiangcong Zhao, Ruihuan Jia, Jiaojiao He, Dan Xu, Miao Miao, Xiaofeng Li
To explore the mechanism of methotrexate (MTX) and its combination with cyclophosphamide (CTX) in collagen-induced arthritis (CIA), we investigated the levels of several immune cells and cytokines in mice with different treatments. CIA was induced in DBA/1 mice at the age of 7 weeks by primary immunization with 100μl emulsion containing 2mg/ml bovine type II collagen which was mixed with complete Freund's adjuvant (CFA). The booster immunization was performed with 50-100μl emulsion containing 2mg/ml bovine type II collagen (CII) mixed with incomplete Freund's adjuvant (IFA)...
July 11, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28700834/petroleum-ether-extract-of-njavara-rice-bran-upregulates-jak2-stat3-mediated-anti-inflammatory-profile-in-macrophages-and-aortic-endothelial-cells-promoting-regression-of-atherosclerosis
#14
Chithra K Pushpan, Jayalekshmy Ananthasankaran, Helen Antony
"Njavara"(Oryza sativa Linn) is a unique rice variety grown in Kerala that is reported to have significantly higher antioxidant, anti-inflammatory, chemical indices, and bioactive components compared with staple rice varieties. However, the role of NBE in reversing the atherosclerosis development remains unclear. The present study aimed to elucidate the role of Njavara rice bran petroleum ether extract (NBE) in promoting atherosclerotic regression. Male New Zealand white breed rabbits were divided into three groups...
July 12, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28699612/relationship-between-immune-parameters-and-non-alcoholic-fatty-liver-disease-in-obese-children
#15
Jun-Qi Shi, Wen-Xia Shen, Xiang-Zhi Wang, Ke Huang, Chao-Chun Zou
OBJECTIVE: To investigate the relationship between immune parameters and non-alcoholic fatty liver disease (NAFLD) in obese children. DESIGN: Case-control study. SETTING: Zhejiang Province, China on July to September 2015. PARTICIPANTS: A total of 117 obese children and 209 healthy non-obese children were studied as the obese and control groups. Depending on the severity of NAFLD, the obese group was divided into subgroups 1 (without NAFLD), 2 (with simple fatty liver) and 3 (with steatohepatitis)...
July 11, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28693306/tannic-acid-mediated-immune-activation-attenuates-brucella-abortus-infection-in-mice
#16
Alisha Wehdnesday Bernardo Reyes, Huynh Tan Hop, Lauren Togonon Arayan, Tran Xuan Ngoc Huy, Wongi Min, Hu Jang Lee, Hong Hee Chang, Suk Kim
Brucellosis is an emerging infectious disease affecting humans and animals. In this study, we investigated the in vitro and in vivo effects of tannic acid (TA) against Brucella (B.) abortus infection. Reduced F-actin polymerization and MAPKs (ERK 1/2 and p38α) phosphorylation were observed in TA-treated cells as compared with control cells after infection. The mice were infected via intraperitoneal route and were orally given with TA or PBS for 14 days. The weights of the spleens from TA-treated and control mice were not different, however the splenic proliferation of B...
July 10, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28693188/consecutive-stimulation-of-hbsag-promotes-the-viability-of-the-human-b-lymphoblastoid-cell-line-im-9-through-regulating-the-sirt1-nf-%C3%AE%C2%BAb-pathway
#17
Jian Bo, Xiaojuan Wang, Jie Li, Wenqing Wang, Jinqian Zhang
Patients with chronic HBV infection have been reported to suffer a significantly increased risk of NHL, but the underlying mechanisms remain to be clearly explained. The aim of the present study was to clarify the relationship between chronic HBV infection and NHL development. Fluorescence-activated cell sorting, Annexin V/7-aminoactinomycin D staining and MTS assay were used to analyze the rate of apoptosis and cell viability. In addition, western blotting was used to detect protein expression. The effects of the activator of SIRT1, SRT1720, and the inhibitor of SIRT1, nicotinamide, were also analyzed...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28692537/early-initiation-of-antiretroviral-treatment-post-siv-infection-does-not-resolve-lymphoid-tissue-activation
#18
Jung Joo Hong, Eduardo L V Silveira, Praveen K Amancha, Siddappa N Byrareddy, Sanjeev Gumber, Kyu-Tae Chang, Aftab A Ansari, Francois Villinger
OBJECTIVE: Germinal center (GC) resident follicular helper T (TFH) cells in lymphoid follicles are a potential sanctuary for HIV/SIV replication. But the dynamics of GCs upon early initiation of antiretroviral therapy (ART) and their potential role in the formation of viral sanctuaries post SIV infection are not fully understood. DESIGN: Sequential lymph node biopsies (n = 10) were collected from SIVmac239-infected rhesus macaques before infection, at 5 weeks post infection/pre ART, 6 and 12 weeks following ART initiation...
July 7, 2017: AIDS
https://www.readbyqxmd.com/read/28690881/small-intestinal-pro-inflammatory-immune-responses-following-campylobacter-jejuni-infection-of-secondary-abiotic-il-10-mice-lacking-nucleotide-oligomerization-domain-2
#19
Markus M Heimesaat, Ursula Grundmann, Marie E Alutis, André Fischer, Stefan Bereswill
Host immune responses are crucial for combating enteropathogenic infections including Campylobacter jejuni. Within 1 week following peroral C. jejuni infection, secondary abiotic IL-10(-/-) mice develop severe immunopathological sequelae affecting the colon (ulcerative enterocolitis). In the present study, we addressed whether pathogen-induced pro-inflammatory immune responses could also be observed in the small intestines dependent on the innate receptor nucleotide-oligomerization-domain-protein 2 (Nod2). Within 7 days following peroral infection, C...
June 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/28690324/proteasome-inhibition-suppresses-th17-cell-generation-and-ameliorates-autoimmune-development-in-experimental-sj%C3%A3-gren-s-syndrome
#20
Fan Xiao, Xiang Lin, Jie Tian, Xiaohui Wang, Qian Chen, Ke Rui, Jie Ma, Shengjun Wang, Qingwen Wang, Xiaoqi Wang, Dongzhou Liu, Lingyun Sun, Liwei Lu
Immunoproteasome activation in immune cells is involved in the modulation of immune responses. Increasing evidence indicates that proteasome inhibitors show beneficial effects in treating autoimmune diseases, but it remains unclear whether proteasome inhibition is an effective approach for suppressing autoimmune development in Sjögren's syndrome (SS). Our previous work has demonstrated a critical role for Th17 cells in the development of experimental SS (ESS) in mice. In this study, we detected high levels of low-molecular-weight protein 7 (LMP7), a key subunit of the immunoproteasome, in Th17 cells from ESS mice...
July 10, 2017: Cellular & Molecular Immunology
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