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Cytokine signal transduction

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https://www.readbyqxmd.com/read/28535426/new-role-of-pcsk9-in-atherosclerotic-inflammation-promotion-involving-the-tlr4-nf-%C3%AE%C2%BAb-pathway
#1
Zhi-Han Tang, Juan Peng, Zhong Ren, Jing Yang, Ting-Ting Li, Tao-Hua Li, Zuo Wang, Dang-Heng Wei, Lu-Shan Liu, Xi-Long Zheng, Zhi-Sheng Jiang
BACKGROUND AND AIMS: Proprotein convertase subtilisin/kexin 9 (PCSK9) has emerged as a popular target in the development of new cholesterol-lowering drugs and therapeutic interventions for atherosclerosis. PCSK9 could accelerate atherosclerosis through mechanisms beyond the degradation of the hepatic low-density lipoprotein receptor. Several clinical studies suggested that PCSK9 is involved in atherosclerotic inflammation. Accordingly, this study aimed to explore the role of PCSK9 in vascular inflammation that promotes atherosclerotic progression...
April 29, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28533220/triptolide-assisted-phosphorylation-of-p53-suppresses-inflammation-induced-nf-%C3%AE%C2%BAb-survival-pathways-in-cancer-cells
#2
Li Zheng, Jia Jia, Huifang Dai, Lei Wan, Jian Liu, Lin Hu, Mian Zhou, Michael Qiu, Xufeng Chen, Lufen Chang, Jae Y Kim, Karen Reckamp, Dan J Raz, Zongping Xia, Binghui Shen
Chronic inflammation plays important roles in cancer initiation and progression. Resolving chronic inflammation or blocking inflammatory signal transduction may prevent cancer development. Here, we report that the combined low-dose use of two anti-inflammatory drugs, aspirin and triptolide, reduces spontaneous lung cancer incidence from 70% to 10% in a mouse model. Subsequent studies reveal that such treatment has little effect in resolving chronic inflammatory conditions in the lung, but it significantly blocks NF-κB-mediated expression of proliferation and survival genes in cancer cells...
May 22, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28526562/new-intracellular-activities-of-matrix-metalloproteinases-shine-in-the-moonlight
#3
REVIEW
Parker G Jobin, Georgina S Butler, ChristopherM Overall
Adaption of a single protein to perform multiple independent functions facilitates functional plasticity of the proteome allowing a limited number of protein-coding genes to perform a multitude of cellular processes. Multifunctionality is achievable by post-translational modifications and by modulating subcellular localization. Matrix metalloproteinases (MMPs), classically viewed as degraders of the extracellular matrix (ECM) responsible for matrix protein turnover, are more recently recognized as regulators of a range of extracellular bioactive molecules including chemokines, cytokines, and their binders...
May 16, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28522898/the-protective-effect-of-cordycepin-on-d-galactosamine-lipopolysaccharide-induced-acute-liver-injury
#4
Jin Li, Liping Zhong, Haibo Zhu, Fengzhong Wang
As the major active ingredient of Cordyceps militaris, cordycepin (3'-deoxyadenosine) has been well documented to alleviate inflammation and oxidative stress both in vitro and in vivo. To explore the potential protective effect of cordycepin in fulminant hepatic failure, mice were pretreated with cordycepin for 3 weeks followed by D-galactosamine (GalN)/lipopolysaccharide (LPS) injection. Then we found cordycepin (200 mg/kg) administration elevated survival rate, improved liver function, and suppressed hepatocyte apoptosis and necrosis in mice with severe hepatic damage by GalN/LPS treatment...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28515942/a-tandem-cd19-cd20-car-lentiviral-vector-drives-on-target-and-off-target-antigen-modulation-in-leukemia-cell-lines
#5
Dina Schneider, Ying Xiong, Darong Wu, Volker Nӧlle, Sarah Schmitz, Waleed Haso, Andrew Kaiser, Boro Dropulic, Rimas J Orentas
BACKGROUND: Clinical success with chimeric antigen receptor (CAR)- based immunotherapy for leukemia has been accompanied by the associated finding that antigen-escape variants of the disease are responsible for relapse. To target hematologic malignancies with a chimeric antigen receptor (CAR) that targets two antigens with a single vector, and thus potentially lessen the chance of leukemic escape mutations, a tandem-CAR approach was investigated. METHODS: Antigen binding domains from the FMC63 (anti-CD19) and Leu16 (anti-CD20) antibodies were linked in differing configurations to transmembrane and T cell signaling domains to create tandem-CARs...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28515365/ceramide-synthesis-regulates-t-cell-activity-and-gvhd-development
#6
M Hanief Sofi, Jessica Heinrichs, Mohammed Dany, Hung Nguyen, Min Dai, David Bastian, Steven Schutt, Yongxia Wu, Anusara Daenthanasanmak, Salih Gencer, Aleksandra Zivkovic, Zdzislaw Szulc, Holger Stark, Chen Liu, Ying-Jun Chang, Besim Ogretmen, Xue-Zhong Yu
Allogeneic hematopoietic cell transplantation (allo-HCT) is an effective immunotherapy for a variety of hematologic malignances, yet its efficacy is impeded by the development of graft-versus-host disease (GVHD). GVHD is characterized by activation, expansion, cytokine production, and migration of alloreactive donor T cells. Hence, strategies to limit GVHD are highly desirable. Ceramides are known to contribute to inflammation and autoimmunity. However, their involvement in T-cell responses to alloantigens is undefined...
May 18, 2017: JCI Insight
https://www.readbyqxmd.com/read/28507442/aberrant-promoter-methylation-profiles-and-association-with-survival-in-patients-with-hepatocellular-carcinoma
#7
Dani Zhong, Hong Cen
The aim of this study was to investigate the prognostic and diagnostic value of genes with promoter methylation in hepatocellular carcinoma (HCC) patients. On the basis of The Cancer Genome Atlas data, we identified genes with differentially methylated promoters in HCC tissues and adjacent non-tumor tissues, using the linear models for microarray data approach. Cox proportional hazard regression analysis was applied to access the prognostic value of identified differentially methylated genes. The diagnostic value of the genes was evaluated through receiver operating characteristic...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28497030/fda-approved-immunosuppressants-targeting-staphylococcal-superantigens-mechanisms-and-insights
#8
REVIEW
Teresa Krakauer
Immunostimulating staphylococcal enterotoxin B (SEB) and related superantigenic toxins cause diseases in human beings and laboratory animals by hyperactivating cells of the immune system. These protein toxins bind to the major histocompatibility complex class II (MHC II) molecules and specific Vβ regions of T-cell receptors (TCRs), resulting in the stimulation of both monocytes/macrophages and T lymphocytes. The bridging of TCR with MHC II molecules by superantigens triggers intracellular signaling cascades, resulting in excessive release of proinflammatory mediators and massive polyclonal T-cell proliferation...
2017: ImmunoTargets and Therapy
https://www.readbyqxmd.com/read/28482827/mucin-1-a-signal-transduction-membrane-bound-mucin-is-present-in-human-disc-tissue-and-is-downregulated-in-vitro-by-exposure-to-il-1%C3%A3-or-tnf-%C3%AE
#9
Helen E Gruber, Jane A Ingram, Gretchen L Hoelscher, Emilio Marrero, Edward N Hanley
BACKGROUND: Back pain and disc degeneration have a growing socioeconomic healthcare impact. Mucin 1 (MUC1) is a transmembrane glycoprotein whose extracellular and intracellular domains participate in cellular signaling. Little is currently known about the presence or role of MUC1 in human disc degeneration. METHODS: In this IRB-approved research study, 29 human disc specimens were analyzed for MUC1 immunohistochemical localization and gene expression, and annulus fibrosus (annulus) cells were also isolated and cultured in 3D...
May 8, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28477194/retroviral-transduction-and-reporter-assay-transcription-factor-cooperation-in-th9-cell-development
#10
Rukhsana Jabeen
Naïve CD4+ T cells differentiate into different T helper subsets in response to specific cytokine environment and transcription factors. Th9 cells are induced in response to signals from cytokines, TGF-β and IL-4. Transcription factors that are downstream of these cytokines converge to drive the development of Th9 cells. Retroviral transduction allows the genetic modification in T cells thereby helping us to better understand the molecular mechanisms that control their development as well as function. In this chapter, an optimized protocol for retroviral transduction of murine Th9 cells as well as transient transfection of Th9 cells with luciferase reporter constructs is described...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28477185/il-9-signaling-pathway-an-update
#11
Dijendra Nath Roy, Ritobrata Goswami
Since the discovery of IL-9 almost three decades back as a growth factor, we have come a long way to understand its pleiotropic functions in the immune system. Despite its many functions, IL-9 still remains as an understudied cytokine. In the last decade, renewed emphasis has been provided to understand the biology of IL-9. Any growth factor or cytokine signals via its cognate receptor to mediate biological functions. In this chapter, we discuss the IL-9 signal transduction in different cell types, which would then exert its distinct functions...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28465227/bovine-lactoferrin-reduces-extra-territorial-facial-allodynia-hyperalgesia-following-a-trigeminal-nerve-injury-in-the-rat
#12
Kayo Horie, Mineo Watanabe, Chea Chanbora, Tetsuya Awada, Ryo Kunimatsu, Takashi Uchida, Takashi Takata, Kotaro Tanimoto
There is an urgent clinical need for an effective therapeutic agent to treat neuropathic pain. This study explored whether intrathecal administration of bovine lactoferrin (bLF), in combination with signal transduction pathway inhibition or an inflammatory cytokine production, results in reduced allodynia/hyperalgesia in the whisker pad area following mental nerve transection (MNT) in rats. Rats were intrathecally infused with bLF, lipopolysaccharide from Rhodobacter sphaeroides (LPS-RS), an antagonist of Toll-like receptor 4 (TLR4), or interleukin (IL)-18 binding protein (BP)...
April 29, 2017: Brain Research
https://www.readbyqxmd.com/read/28462209/lung-ischemia-reperfusion-injury-the-therapeutic-role-of-dipeptidyl-peptidase-4-inhibition
#13
REVIEW
Paul A J Beckers, Jan F Gielis, Paul E Van Schil, Dirk Adriaensen
Dipeptidyl peptidase 4 (DPP4) is a cell surface protease that has been reported to play a role in glucose homeostasis, cancer, HIV, autoimmunity, immunology and inflammation. A role for DPP4 in ischemia-reperfusion injury (IRI) in the heart has been established. Dipeptidyl peptidase 4 inhibition (DPP4i) appeared to decrease infarct size, improves cardiac function and promotes myocardial regeneration. Lung ischemia reperfusion injury is caused by a complex mechanism in which macrophages and neutrophils play an important role...
March 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28456632/tumor-necrosis-factor-inhibits-spread-of-hepatitis-c-virus-among-liver-cells-independent-from-interferons
#14
Stephen M Laidlaw, Svetlana Marukian, Rachel H Gilmore, Siobhán B Cashman, Volodymyr Nechyporuk-Zloy, Charles M Rice, Lynn B Dustin
BACKGROUND & AIMS: Tumor necrosis factor (TNF) an inflammatory cytokine expressed by human fetal liver cells (HFLCs) following infection with cell culture-derived hepatitis C virus. TNF has been reported to increase entry of HCV pseudoparticles into hepatoma cells and inhibit signaling by interferon alpha (IFNA), but have no effect on replication of HCV RNA. We investigated the effects of TNF on HCV infection of and spread among Huh-7 hepatoma cells and primary HFLCs.  METHODS: Human hepatoma (Huh-7 and Huh-7...
April 26, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28455196/maternal-il-17a-in-autism
#15
REVIEW
Helen Wong, Charles Hoeffer
Although autism spectrum disorder (ASD) has a strong genetic basis, its etiology is complex, with several genetic factors likely to be involved as well as environmental factors. Immune dysregulation has gained significant attention as a causal mechanism in ASD pathogenesis. ASD has been associated with immune abnormalities in the brain and periphery, including inflammatory disorders and autoimmunity in not only the affected individuals but also their mothers. Prenatal exposure to maternal immune activation (MIA) has been implicated as an environmental risk factor for ASD...
April 25, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28443609/the-hiv-1-viral-synapse-signals-human-foreskin-keratinocytes-to-secrete-thymic-stromal-lymphopoietin-facilitating-hiv-1-foreskin-entry
#16
Z Zhou, L Xu, A Sennepin, C Federici, Y Ganor, D Tudor, D Damotte, N Barry Delongchamps, M Zerbib, M Bomsel
The complexity of signal transduction resulting from the contact of human immunodeficiency virus type 1 (HIV-1)-infected cells and mucosal cells has hampered our comprehension of HIV-1 mucosal entry. Such process is driven efficiently only by viral synapse contacts, whereas cell-free HIV-1 remains poorly infectious. Using CD4(+) T-cells expressing only HIV-1 envelope inoculated on human adult foreskin tissues, we designed methodologies to identify the signals transduced in foreskin keratinocytes following HIV-1-envelope-dependent viral synapse formation...
April 26, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28440462/imperatorin-efficiently-blocks-tnf-%C3%AE-mediated-activation-of-ros-pi3k-akt-nf-%C3%AE%C2%BAb-pathway
#17
Ke Si Wang, Ying Lv, Zhe Wang, Juan Ma, Chunliu Mi, Xuezheng Li, Guang Hua Xu, Lian Xun Piao, Sheng Zhe Zheng, Xuejun Jin
Inflammation contributes to development and progression in a variety of cancers, including cervical cancer, which is the second leading cause of cancer deaths in women worldwide. In this study, we examined the anti-inflammatory effects of imperatorin, a psoralen-type furanocoumarin from the fruits of Angelica dahurica, in tumor necrosis factor-α (TNF-α)-stimulated HeLa cells by investigating its impact on the production and expression of cytokines and the major signal-transduction pathways. We found this compound significantly inhibited the TNF-α-induced expression of NF-κB target genes, such as COX-2, cyclin  D1, MMP-9, VEGF, IL-6 and Bcl-xL in a concentration-dependent manner...
April 19, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28433068/the-role-of-interleukin-1%C3%AE-and-extracellular-signal-regulated-kinase-1-2-in-glucose-stimulated-insulin-secretion
#18
Ben Niu, Heng Su, Xue-Shan Xia, Qiu He, Yuan-Ming Xue, Xin-Ming Yan
Glucose-stimulated insulin secretion (GSIS) is one of the important physiological characteristics of islet β cells, and extracellular-regulated protein kinase 1/2 (ERK1/2) is an important member of the mitogen-activated protein kinase family that regulates this process. The inflammatory cytokine interleukin (IL)-1β can inhibit the insulin secretion of pancreatic β cells, but the exact mechanism is unclear. This study was designed to investigate the inhibitory effect of IL-1β on GSIS in βTC-6 cells and its relation with the ERK1/2 signal transduction pathway...
May 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28432900/lysophosphatidic-acid-induces-expression-of-genes-in-human-oral-keratinocytes-involved-in-wound-healing
#19
Hong Huynh Thorlakson, Stian Andre Engen, Olav Schreurs, Karl Schenck, Inger Johanne Schytte Blix
OBJECTIVE: Epithelial cells participate in wound healing by covering wounds, but also as important mediators of wound healing processes. Topical application of the phospholipid growth factor lysophosphatidic acid (LPA) accelerates dermal wound healing and we hypothesized that LPA can play a role in human oral wound healing through its effects on human oral keratinocytes (HOK). DESIGN: HOK were isolated from gingival biopsies and exposed to LPA. The LPA receptor profile, signal transduction pathways, gene expression and secretion of selected cytokines were analyzed...
April 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28428788/the-protective-role-of-type-i-interferons-in-the-gastrointestinal-tract
#20
REVIEW
Kevin P Kotredes, Brianna Thomas, Ana M Gamero
The immune system of the gastrointestinal (GI) tract manages the significant task of recognizing and eliminating pathogens while maintaining tolerance of commensal bacteria. Dysregulation of this delicate balance can be detrimental, resulting in severe inflammation, intestinal injury, and cancer. Therefore, mechanisms to relay important signals regulating cell growth and immune reactivity must be in place to support GI homeostasis. Type I interferons (IFN-I) are a family of pleiotropic cytokines, which exert a wide range of biological effects including promotion of both pro- and anti-inflammatory activities...
2017: Frontiers in Immunology
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