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https://www.readbyqxmd.com/read/29164392/maturation-and-cytokine-pattern-of-human-dendritic-cells-in-response-to-different-yeasts
#1
Silvia Boschi Bazan, Barbara Walch-Rückheim, Manfred J Schmitt, Frank Breinig
Activated dendritic cells (DC) induce and polarize T-cell responses by expression of distinct maturation markers and cytokines. This study systematically investigated the capacity of different biotechnically relevant yeast species and strains including Saccharomyces cerevisiae, Schizosaccharomyces pombe, Kluyveromyces lactis, Pichia pastoris, Hansenula polymorpha, Yarrowia lipolytica, and Candida glabrata to initiate maturation of human DC. As important prerequisite for T-cell activation, all yeasts were shown to effectively induce, though to a different extent, the expression of the activation marker CD83, the co-stimulatory molecules CD80, CD86, CD54, CD58, and CD40, as well as the antigen-presenting molecules MHCs I and II...
November 21, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/29163545/cd40l-expression-allows-cd8-t-cells-to-promote-their-own-expansion-and-differentiation-through-dendritic-cells
#2
Neil Q Tay, Debbie C P Lee, Yen Leong Chua, Nayana Prabhu, Nicholas R J Gascoigne, David M Kemeny
CD8(+) T cells play an important role in providing protective immunity against a wide range of pathogens, and a number of different factors control their activation. Although CD40L-mediated CD40 licensing of dendritic cells (DCs) by CD4(+) T cells is known to be necessary for the generation of a robust CD8(+) T cell response, the contribution of CD8(+) T cell-expressed CD40L on DC licensing is less clear. We have previously shown that CD8(+) T cells are able to induce the production of IL-12 p70 by DCs in a CD40L-dependent manner, providing some evidence that CD8(+) T cell-mediated activation of DCs is possible...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163529/nlrp10-enhances-cd4-t-cell-mediated-ifn%C3%AE-response-via-regulation-of-dendritic-cell-derived-il-12-release
#3
Maurizio Vacca, Julia Böhme, Lia Paola Zambetti, Hanif Javanmard Khameneh, Bhairav S Paleja, Federica Laudisi, Adrian W S Ho, Kurt Neo, Keith Weng Kit Leong, Mardiana Marzuki, Bernett Lee, Michael Poidinger, Laura Santambrogio, Liana Tsenova, Francesca Zolezzi, Gennaro De Libero, Amit Singhal, Alessandra Mortellaro
NLRP10 is a nucleotide-binding oligomerization domain-like receptor that functions as an intracellular pattern recognition receptor for microbial products. Here, we generated a Nlrp10(-/-) mouse to delineate the role of NLRP10 in the host immune response and found that Nlrp10(-/-) dendritic cells (DCs) elicited sub-optimal IFNγ production by antigen-specific CD4(+) T cells compared to wild-type (WT) DCs. In response to T-cell encounter, CD40 ligation or Toll-like receptor 9 stimulation, Nlrp10(-/-) DCs produced low levels of IL-12, due to a substantial decrease in NF-κB activation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29162926/the-relationship-between-soluble-cd40-ligand-level-and-atherosclerosis-in-white-coat-hypertension
#4
Yu-Qing Huang, L I Jie, Ji-Yan Chen, Song-Tao Tang, Cheng Huang, Ying-Qing Feng
This study was designed to examine the distribution of plasma soluble CD40 ligand (sCD40L), and its relationship with carotid intima-media thickness (CIMT) in healthy controls and subjects with white-coat hypertension (WCH) or hypertension (HT). Thirty-five patients with HT, 35 patients with WCH, and 35 healthy controls were enrolled. The normal group (CIMT < 0.9 mm), subclinical atherosclerosis group (0.9 mm ≤ CIMT < 1.2 mm) and atherosclerosis group (CIMT ≥ 1.2 mm) were grouped based on the value of CIMT...
November 21, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/29157299/the-similarities-between-smdcs-and-regdcs-in-alleviating-the-immune-injury-caused-by-transplantation-of-hepatocytes-differentiated-from-escs
#5
Cheng Zhang, Wenwei Liao, Bing Cai, Furong Liu, Qiong Ke, Xiaofeng Zhu, Xiaoshun He, Anbin Hu
BACKGROUND: This study aimed to investigate the tolerogenic mechanisms induced by semimature dendritic cells (smDCs) and regulatory dendritic cells (regDCs) after transplantation of hepatocytes differentiated from mouse embryonic stem cells (ESCs) and to confirm the low immunogenicity of hepatocytes differentiated from ESCs. METHODS: Green fluorescent protein-labeled ESCs collected from 129 mice were cultured to differentiate into hepatocytes. smDCs and regDCs were cultured in vitro...
November 21, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29155869/nf-%C3%AE%C2%BAb-pathways-are-involved-in-m1-polarization-of-raw-264-7-macrophage-by-polyporus-polysaccharide-in-the-tumor-microenvironment
#6
Chun-Ping Liu, Xian Zhang, Qing-Long Tan, Wen-Xing Xu, Chang-Yuan Zhou, Min Luo, Xiong Li, Run-Yue Huang, Xing Zeng
Bladder cancer is one of the most malignant tumors closely associated with macrophages. Polyporus polysaccharide (PPS) has shown excellent efficacy in treating bladder cancer with minimal side effects. However, the molecular mechanisms underlying the effects of PPS in inhibiting bladder cancer remain unclear. In this study, we used macrophages cultured alone or with T24 human bladder cancer cell culture supernatant as study models. We found that PPS enhanced the activities of IFN-γ-stimulated RAW 264.7 macrophages, as shown by the release of inducible nitric oxide synthase (INOS), secretion of tumor necrosis factor (TNF)-α and interleukin (IL)-6, phagocytosis activity, as well as expression of M1 phenotype indicators, such as CD40, CD284 and CD86...
2017: PloS One
https://www.readbyqxmd.com/read/29155846/soluble-cd40-ligand-directly-alters-glomerular-permeability-and-may-act-as-a-circulating-permeability-factor-in-fsgs
#7
Sophie Doublier, Cristina Zennaro, Luca Musante, Tiziana Spatola, Giovanni Candiano, Maurizio Bruschi, Luca Besso, Massimo Cedrino, Michele Carraro, Gian Marco Ghiggeri, Giovanni Camussi, Enrico Lupia
CD40/CD40 ligand (CD40L) dyad, a co-stimulatory bi-molecular complex involved in the adaptive immune response, has also potent pro-inflammatory actions in haematopoietic and non-haematopoietic cells. We describe here a novel role for soluble CD40L (sCD40L) as modifier of glomerular permselectivity directly acting on glomerular epithelial cells (GECs). We found that stimulation of CD40, constitutively expressed on GEC cell membrane, by the sCD40L rapidly induced redistribution and loss of nephrin in GECs, and increased albumin permeability in isolated rat glomeruli...
2017: PloS One
https://www.readbyqxmd.com/read/29155517/expression-of-cd40-cd40l-in-colon-cancer-and-its-effect-on-proliferation-and-apoptosis-of-sw48-colon-cancer-cells
#8
Xueqin Pang, Lifeng Zhang, Jiaming Wu, Chen Ma, Chuanyong Mu, Guangbo Zhang, Weichang Chen
PURPOSE: To study was to study the expression of CD40/CD40L in colon cancer and investigate the effects of CD40/CD40L overexpression on the proliferation and apoptosis of SW48 colon cancer cell line. METHODS: Immunohistochemistry was used to detect the expression of CD40 protein in colon cancer tissue samples from 70 patients, and 10 adjacent normal tissue samples. A CD40L gene-containing plasmid was transfected into SW48 colon cancer cells using lipofectamine 2000...
July 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29154736/lactobacilli-fermented-cow-s-milk-attenuated-lipopolysaccharide-induced-neuroinflammation-and-memory-impairment-in-vitro-and-in-vivo
#9
Nurul Huda Musa, Vasudevan Mani, Siong Meng Lim, Sharmili Vidyadaran, Abu Bakar Abdul Majeed, Kalavathy Ramasamy
Nutritional interventions are now recommended as strategies to delay Alzheimer's disease (AD) progression. The present study evaluated the neuroprotective effect (anti-inflammation) of lactic acid bacteria (either Lactobacillus fermentum LAB9 or L. casei LABPC) fermented cow's milk (CM) against lipopolysaccharide (LPS)-activated microglial BV2 cells in vitro. The ability of CM-LAB in attenuating memory deficit in LPS-induced mice was also investigated. ICR mice were orally administered with CM-LAB for 28 d before induction of neuroinflammation by LPS...
November 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/29154209/external-signals-regulate-germinal-center-fate-determining-transcription-factors-in-the-a20-lymphoma-cell-line
#10
Juan Feng, Xin Liu, Xingya Ni, Hai Qi
Due to the apoptosis-prone nature of primary germinal center B (GCB) cells, it remains a huge challenge to dissect signals that guide their differentiation towards memory B cells and plasma cells in vitro. Here we show that the murine lymphoma cell line A20 resembles primary GCB cells in expression of GC-specific surface markers and the master transcription factor BCL6 and may serve as a useful system to model certain GCB cell behaviors in vitro. Using these cells, we found that both CD40 and B cell receptor (BCR) signaling are able to drive BCL6 downregulation, which is a prerequisite of post-GC B-cell differentiation...
November 16, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29152908/the-genetics-of-kawasaki-disease
#11
Yoshihiro Onouchi
Kawasaki disease (KD) is a complex disorder which affects genetically susceptible infants and children. Several susceptibility genes (e.g., ITPKC, CASP3, CD40 and ORAI) and chromosomal regions have been identified through genome-wide association and genome-wide linkage studies to have association with KD. Knowledge of susceptibility genes involved in the pathogenesis of KD may provide new insights into diagnosis and treatment of this condition. However, there is much that we still do not know about the genetic basis of KD...
November 19, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29152836/modulation-of-fatty-acid-metabolism-and-immune-suppression-are-features-of-in-vitro-tumour-sphere-formation-in-ontogenetically-distinct-dog-cancers
#12
J-H Kim, A M Frantz, A L Sarver, B H Gorden Klukas, M Lewellen, T D O'Brien, E B Dickerson, J F Modiano
Non-adherent, 3-dimensional sphere formation is used as an in vitro surrogate to evaluate cellular potential for tumour initiation and self-renewal. To determine if a shared molecular program underlies the capacity for sphere formation by cells originating from diverse tumour types, we characterized molecular and functional properties of 10 independent cell lines derived from 3 ontogenetically distinct dog cancers: hemangiosarcoma, osteosarcoma and glial brain tumours. Genome-wide gene expression profiling identified tumour-of-origin-dependent patterns of adjustment to sphere formation in a uniform culture condition...
November 20, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/29146546/signaling-via-toll-like-receptor-4-and-cd40-in-b-cells-plays-a-regulatory-role-in-the-pathogenesis-of-multiple-sclerosis-through-interleukin-10-production
#13
Yoichiro Okada, Hirofumi Ochi, Chihiro Fujii, Yuichiro Hashi, Mio Hamatani, Shinji Ashida, Kazuyuki Kawamura, Hirofumi Kusaka, Sadayuki Matsumoto, Masanori Nakagawa, Toshiki Mizuno, Ryosuke Takahashi, Takayuki Kondo
BACKGROUND: B cells play an important role in the development of multiple sclerosis (MS), but can also exhibit regulatory functions through IL-10 production. Toll-like receptors (TLR) and CD40 signaling are likely to be involved in this process. OBJECTIVE: To investigate the ability of MS B cells to produce IL-10 in response to TLR stimulation in the presence or absence of CD40 co-stimulation. METHODS: Peripheral blood mononuclear cells obtained from 34 MS patients and 24 matched healthy participants (HS) were stimulated through either TLR4 or TLR9 alone, or together with CD40...
November 13, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29132684/interactions-between-lactobacilli-and-chicken-macrophages-induce-antiviral-responses-against-avian-influenza-virus
#14
Bahram Shojadoost, Raveendra R Kulkarni, Jennifer T Brisbin, Wanderley Quinteiro-Filho, Tamiru N Alkie, Shayan Sharif
Macrophages are an important cell type of the innate immune system that upon activation, can exert antiviral functions and also can induce virus-specific adaptive immune responses. Macrophage interaction with certain probiotic bacteria such as lactobacilli can enhance antiviral functions of these cells. We have previously shown that administration of lactobacilli to chickens can effectively augment immune response to vaccine antigens. Here, we investigated the effects of representative strains of three Lactobacillus species, L...
October 31, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/29132233/prospects-for-modulating-the-cd40-cd40l-pathway-in-the-therapy-of-the-hyper-igm-syndrome
#15
Xiangxue Meng, Bin Yang, Wen-Chen Suen
The critical role of the CD40/CD40L pathway in B-cell proliferation, immunoglobulin (Ig) isotype switching and germinal center formation has been studied and described extensively in previous literature. Interruption of the CD40/CD40L signal causes hyper-IgM (HIGM) syndrome, which has been classified and recognized as a group of rare inherited immune deficiency disorders. Defects in CD40 and CD40L interactions or in downstream signaling molecules, including activation-induced cytidine deaminase, uracyl-DNA-glycosylase, NF-κB and DNA repair enzymes, result in an increased level of serum IgM and a significantly decreased or absent level of IgA, IgG and IgE that is accompanied by severe recurrent infections and autoimmune diseases...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/29129918/intratumoral-cd40-activation-and-checkpoint-blockade-induces-t-cell-mediated-eradication-of-melanoma-in-the-brain
#16
Manisha Singh, Christina Vianden, Mark J Cantwell, Zhimin Dai, Zhilan Xiao, Meenu Sharma, Hiep Khong, Ashvin R Jaiswal, Faisal Faak, Yared Hailemichael, L M E Janssen, Uddalak Bharadwaj, Michael A Curran, Adi Diab, Roland L Bassett, David J Tweardy, Patrick Hwu, Willem W Overwijk
CD40 agonists bind the CD40 molecule on antigen-presenting cells and activate them to prime tumor-specific CD8(+) T cell responses. Here, we study the antitumor activity and mechanism of action of a nonreplicating adenovirus encoding a chimeric, membrane-bound CD40 ligand (ISF35). Intratumoral administration of ISF35 in subcutaneous B16 melanomas generates tumor-specific, CD8(+) T cells that express PD-1 and suppress tumor growth. Combination therapy of ISF35 with systemic anti-PD-1 generates greater antitumor activity than each respective monotherapy...
November 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29127458/safety-pharmacokinetics-and-pharmacodynamics-of-single-rising-doses-of-bi-655064-an-antagonistic-anti-cd40-antibody-in-healthy-subjects-a-potential-novel-treatment-for-autoimmune-diseases
#17
Fredrik N Albach, Frank Wagner, Andreas Hüser, Julia Igel, David Joseph, James Hilbert, Corinna Schoelch, Steven J Padula, Jürgen Steffgen
PURPOSE: The CD40-CD40L pathway is a promising treatment target for autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus and lupus nephritis. The safety, pharmacokinetics and pharmacodynamics of BI 655064, a novel humanised antagonistic anti-CD40 monoclonal antibody, were investigated in this first-in-human trial. METHODS: Healthy male subjects (n = 72) were randomised 3:1, within each BI 655064 dose group, to single intravenous (IV; 0...
November 10, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29127283/environmental-sensing-by-mature-b-cells-is-controlled-by-the-transcription-factors-pu-1-and-spib
#18
Simon N Willis, Julie Tellier, Yang Liao, Stephanie Trezise, Amanda Light, Kristy O'Donnell, Lee Ann Garrett-Sinha, Wei Shi, David M Tarlinton, Stephen L Nutt
Humoral immunity requires B cells to respond to multiple stimuli, including antigen, membrane and soluble ligands, and microbial products. Ets family transcription factors regulate many aspects of haematopoiesis, although their functions in humoral immunity are difficult to decipher as a result of redundancy between the family members. Here we show that mice lacking both PU.1 and SpiB in mature B cells do not generate germinal centers and high-affinity antibody after protein immunization. PU.1 and SpiB double-deficient B cells have a survival defect after engagement of CD40 or Toll-like receptors (TLR), despite paradoxically enhanced plasma cell differentiation...
November 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/29127016/enhanced-activation-of-circulating-plasmacytoid-dendritic-cells-in-patients-with-chronic-obstructive-pulmonary-disease-and-experimental-smoking-induced-emphysema
#19
Shi-Lin Qiu, Liang-Jian Kuang, Qi-Ya Tang, Min-Chao Duan, Jing Bai, Zhi-Yi He, Jian-Quan Zhang, Mei-Hua Li, Jing-Min Deng, Guang-Nan Liu, Xiao-Ning Zhong
Plasmacytoid dendritic cells (pDCs) are key cells bridging the innate with adaptive immunity. However, the phenotypic characteristics of circulating pDCs and its role in smoking related-Chronic Obstructive Pulmonary Disease (COPD) remain largely unknown. The aim of this study was analyzed the phenotype of circulating pDCs and the expression of IFN-γ producing CD8(+)T cells and IL-17-producing CD8(+)T cells in patients with COPD by using multi-colour flow cytometry. The cytokine profiles in peripheral blood from all subjects were measured by ELISA...
November 7, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/29115560/identification-of-key-genes-transcription-factors-and-micrornas-involved-in-intracranial-aneurysm
#20
Liang Wei, Qi Wang, Yanfei Zhang, Cheng Yang, Hongxin Guan, Yiming Chen, Zhiyang Sun
Intracranial aneurysm (IA) is a devastating disease, the pathogenesis of which remains to be elucidated. The present study aimed to determine the molecular mechanism of IA and to identify potential therapeutic targets using bioinformatics analysis. The GSE54083 dataset, which includes data from patients with ruptured IA and superficial temporal artery controls, was downloaded from the Gene Expression Omnibus, and differentially expressed genes (DEGs) were identified in the ruptured IA samples using the limma package in R...
November 3, 2017: Molecular Medicine Reports
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