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https://www.readbyqxmd.com/read/28626344/increased-transendothelial-transport-of-ccl3-is-insufficient-to-drive-immune-cell-transmigration-through-the-blood-brain-barrier-under-inflammatory-conditions-in-vitro
#1
Maxime De Laere, Carmelita Sousa, Megha Meena, Roeland Buckinx, Jean-Pierre Timmermans, Zwi Berneman, Nathalie Cools
Many neuroinflammatory diseases are characterized by massive immune cell infiltration into the central nervous system. Identifying the underlying mechanisms could aid in the development of therapeutic strategies specifically interfering with inflammatory cell trafficking. To achieve this, we implemented and validated a blood-brain barrier (BBB) model to study chemokine secretion, chemokine transport, and leukocyte trafficking in vitro. In a coculture model consisting of a human cerebral microvascular endothelial cell line and human astrocytes, proinflammatory stimulation downregulated the expression of tight junction proteins, while the expression of adhesion molecules and chemokines was upregulated...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28619088/chemokine-signals-are-crucial-for-enhanced-homing-and-differentiation-of-circulating-osteoclast-progenitor-cells
#2
Alan Sucur, Zrinka Jajic, Marinko Artukovic, Marina Ikic Matijasevic, Branimir Anic, Darja Flegar, Antonio Markotic, Tomislav Kelava, Sanja Ivcevic, Natasa Kovacic, Vedran Katavic, Danka Grcevic
BACKGROUND: The peripheral blood (PB) monocyte pool contains osteoclast progenitors (OCPs), which contribute to osteoresorption in inflammatory arthritides and are influenced by the cytokine and chemokine milieu. We aimed to define the importance of chemokine signals for migration and activation of OCPs in rheumatoid arthritis (RA) and psoriatic arthritis (PsA). METHODS: PB and, when applicable, synovial fluid (SF) samples were collected from 129 patients with RA, 53 patients with PsA, and 110 control patients in parallel to clinical parameters of disease activity, autoantibody levels, and applied therapy...
June 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28587645/transcriptome-profiling-of-staphylococci-infected-cow-mammary-gland-parenchyma
#3
Ewa M Kosciuczuk, Paweł Lisowski, Justyna Jarczak, Alicja Majewska, Magdalena Rzewuska, Lech Zwierzchowski, Emilia Bagnicka
BACKGROUND: Genome-wide gene expression profiling allows for identification of genes involved in the defense response of the host against pathogens. As presented here, transcriptomic analysis and bioinformatics tools were applied in order to identify genes expressed in the mammary gland parenchyma of cows naturally infected with coagulase-positive and coagulase-negative Staphylococci. RESULTS: In cows infected with coagulase-positive Staphylococci, being in 1st or 2nd lactation, 1700 differentially expressed genes (DEGs) were identified...
June 6, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28569178/prediction-of-response-to-remission-induction-therapy-by-gene-expression-profiling-of-peripheral-blood-in-japanese-patients-with-microscopic-polyangiitis
#4
Akihiro Ishizu, Utano Tomaru, Sakiko Masuda, Ken-Ei Sada, Koichi Amano, Masayoshi Harigai, Yasushi Kawaguchi, Yoshihiro Arimura, Kunihiro Yamagata, Shoichi Ozaki, Hiroaki Dobashi, Sakae Homma, Yasunori Okada, Hitoshi Sugiyama, Joichi Usui, Naotake Tsuboi, Seiichi Matsuo, Hirofumi Makino
BACKGROUND: Microscopic polyangiitis (MPA), which is classified as an anti-neutrophil cytoplasmic antibody (ANCA)-associated small vessel vasculitis, is one of the most frequent primary vasculitides in Japan. We earlier nominated 16 genes (IRF7, IFIT1, IFIT5, OASL, CLC, GBP-1, PSMB9, HERC5, CCR1, CD36, MS4A4A, BIRC4BP, PLSCR1, DEFA1/DEFA3, DEFA4, and COL9A2) as predictors of response to remission induction therapy against MPA. The aim of this study is to determine the accuracy of prediction using these 16 predictors...
May 31, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28553619/human-neutrophils-produce-ccl23-in-response-to-various-tlr-agonists-and-tnf%C3%AE
#5
Fabio Arruda-Silva, Francisco Bianchetto-Aguilera, Sara Gasperini, Sara Polletti, Emanuela Cosentino, Nicola Tamassia, Marco A Cassatella
CCL23, also known as myeloid progenitor inhibitory factor (MPIF)-1, macrophage inflammatory protein (MIP)-3, or CKβ8, is a member of the CC chemokine subfamily exerting its effects via CCR1 binding. By doing so, CCL23 selectively recruits resting T lymphocytes and monocytes, inhibits proliferation of myeloid progenitor cells and promotes angiogenesis. Previously, we and other groups have reported that human neutrophils are able to produce chemokines upon appropriate activation, including CCR1-binding CCL2, CCL3, and CCL4...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28542126/human-mscs-promotes-colorectal-cancer-epithelial-mesenchymal-transition-and-progression-via-ccl5-%C3%AE-catenin-slug-pathway
#6
Ke Chen, Qianqian Liu, Lai Ling Tsang, Qiao Ye, Hsiao Chang Chan, Yunwei Sun, Xiaohua Jiang
Mesenchymal stem cells (MSCs) extensively interact with cancer cells and other stroma cells in the tumor microenvironment. However, the role of MSCs in colorectal cancer (CRC) progression and metastasis is controversial. This study was designed to identify the role of inflammation-activated-MSCs in CRC development. Our results show that tumor necrosis factor (TNF)-α-preactivated-hMSCs significantly promote the progression of colon cancer cells by enhancing cell proliferation, epithelial-mesenchymal transition, migration, and invasion...
May 25, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28529998/complement-c5a-receptor-is-the-key-initiator-of-neutrophil-adhesion-igniting-immune-complex-induced-arthritis
#7
Yoshishige Miyabe, Chie Miyabe, Thomas T Murooka, Edward Y Kim, Gail A Newton, Nancy D Kim, Bodduluri Haribabu, Francis W Luscinskas, Thorsten R Mempel, Andrew D Luster
The deposition of immune complexes (IC) in tissues induces a "type III hypersensitivity" that results in tissue damage and underlies the pathogenesis of many autoimmune diseases. The neutrophil is the first immune cell recruited into sites of IC deposition and plays a critical role in shaping the overall tissue response. However, the mechanism by which IC initiate and propagate neutrophil infiltration into tissue is not known. Here, using intravital multiphoton joint imaging of IC-induced arthritis in live mice, we found that the complement C5a receptor (C5aR) was the key initiator of neutrophil adhesion on joint endothelium...
January 2017: Science Immunology
https://www.readbyqxmd.com/read/28528204/a-novel-pleiotropic-effect-of-aspirin-beneficial-regulation-of-pro-and-anti-inflammatory-mechanisms-in-microglial-cells
#8
Diana Kata, Imre Földesi, Liliana Z Feher, Laszlo Hackler, Laszlo G Puskas, Karoly Gulya
Aspirin, one of the most widely used non-steroidal anti-inflammatory drugs, has extensively studied effects on the cardiovascular system. To reveal further pleiotropic, beneficial effects of aspirin on a number of pro- and anti-inflammatory microglial mechanisms, we performed morphometric and functional studies relating to phagocytosis, pro- and anti-inflammatory cytokine production (IL-1β, tumor necrosis factor-α (TNF-α) and IL-10, respectively) and analyzed the expression of a number of inflammation-related genes, including those related to the above functions, in pure microglial cells...
May 18, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28526296/mesenchymal-stem-cells-mscs-attenuate-cutaneous-sclerodermatous-graft-versus-host-disease-scl-gvhd-through-inhibition-of-immune-cell-infiltration-in-a-mouse-model
#9
Ji-Young Lim, Da-Bin Ryu, Sung-Eun Lee, Gyeongsin Park, Chang-Ki Min
Human chronic graft-versus-host disease (CGVHD) shares clinical characteristics with a murine sclerodermatous GVHD (Scl-GVHD) model that is characterized by skin thickening and lung fibrosis. A B10.D2 → BALB/c transplant model of Scl-GVHD was used to address the therapeutic effect of mesenchymal stem cells (MSCs) on the development of CGVHD. The clinical and pathological severity of cutaneous Scl-GVHD was significantly attenuated in MSC-treated recipients relative to Scl-GVHD controls. After MSC treatment, skin collagen production was significantly reduced with consistent downregulation of TGF-β expression...
May 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28476575/contribution-of-atypical-chemokine-receptor-2-ackr2-in-bone-remodeling
#10
Izabella Lucas de Abreu Lima, Janine Mayra da Silva, Letícia Fernanda Duffles Rodrigues, Davidson Frois Madureira, Angélica Cristina Fonseca, Gustavo Pompermaier Garlet, Mauro Martins Teixeira, Remo Castro Russo, Sandra Yasuyo Fukada, Tarcília Aparecida da Silva
INTRODUCTION: Bone remodeling is a tightly regulated process influenced by chemokines. ACKR2 is a decoy receptor for CC chemokines functioning as regulator of inflammatory response. In this study we investigated whether the absence of ACKR2 would affect bone phenotype and remodeling induced by mechanical loading. METHODS: An orthodontic appliance was placed between incisors and first molar of ACKR2 deficient (ACKR2(-/-)) and C57BL6/J (wild-type/WT) mice. Microtomography, histology and qPCR were performed to evaluate bone parameters, orthodontic tooth movement (OTM), bone cells counts and the expression of ACKR2, bone remodeling markers, CC chemokines and chemokines receptors...
May 3, 2017: Bone
https://www.readbyqxmd.com/read/28474499/inhibition-of-the-bet-family-of-epigenetic-reader-proteins-a-novel-principle-for-modulating-gene-expression-in-ige-activated-mast-cells
#11
Gianni Garcia-Faroldi, Elin Rönnberg, Mirjana Grujic, Gunnar Pejler
INTRODUCTION: The BET family of bromodomain-containing proteins constitute epigenetic readers that bind to acetylated lysine residues of core histones, thereby translating epigenetic histone marks to effects on gene expression. BET inhibitors are currently emerging as promising therapeutic agents for treatment of various pathological conditions. Here, we explored the potential of using BET inhibition to modulate IgE-mediated responses in mast cells. METHODS: We assessed the effects of BET inhibitors PFI-1, I-BET151, and I-BET762 on responses downstream of mast cell activation through IgE receptor cross-linking...
June 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/28469705/suppression-of-cinnamoyl-coa-reductase-increases-the-level-of-monolignol-ferulates-incorporated-into-maize-lignins
#12
Rebecca A Smith, Cynthia L Cass, Mona Mazaheri, Rajandeep S Sekhon, Marlies Heckwolf, Heidi Kaeppler, Natalia de Leon, Shawn D Mansfield, Shawn M Kaeppler, John C Sedbrook, Steven D Karlen, John Ralph
BACKGROUND: The cell wall polymer lignin provides structural support and rigidity to plant cell walls, and therefore to the plant body. However, the recalcitrance associated with lignin impedes the extraction of polysaccharides from the cell wall to make plant-based biofuels and biomaterials. The cell wall digestibility can be improved by introducing labile ester bonds into the lignin backbone that can be easily broken under mild base treatment at room temperature. The FERULOYL-CoA MONOLIGNOL TRANSFERASE (FMT) enzyme, which may be naturally found in many plants, uses feruloyl-CoA and monolignols to synthesize the ester-linked monolignol ferulate conjugates...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28454080/relevance-of-ccl3-ccr5-axis-in-oral-carcinogenesis
#13
Janine Mayra da Silva, Tálita Pollyanna Moreira Dos Santos, Lays Martin Sobral, Celso Martins Queiroz-Junior, Milene Alvarenga Rachid, Amanda E I Proudfoot, Gustavo Pompermaier Garlet, Aline Carvalho Batista, Mauro Martins Teixeira, Andréia Machado Leopoldino, Remo Castro Russo, Tarcília Aparecida Silva
The chemokine CCL3 is a chemotactic cytokine crucial for inflammatory cell recruitment in homeostatic and pathological conditions. CCL3 might stimulate cancer progression by promoting leukocyte accumulation, angiogenesis and tumour growth. The expression of CCL3 and its receptors CCR1 and CCR5 was demonstrated in oral squamous cell carcinoma (OSCC), but their role was not defined. Here, the functions of CCL3 were assessed using a model of chemically induced tongue carcinogenesis with 4-nitroquinoline-1-oxide (4NQO)...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28440025/identifying-key-genes-in-rheumatoid-arthritis-by-weighted-gene-co-expression-network-analysis
#14
Chunhui Ma, Qi Lv, Songsong Teng, Yinxian Yu, Kerun Niu, Chengqin Yi
PURPOSE: This study aimed to identify rheumatoid arthritis (RA) related genes based on microarray data using the WGCNA (weighted gene co-expression network analysis) method. METHODS: Two gene expression profile datasets GSE55235 (10 RA samples and 10 healthy controls) and GSE77298 (16 RA samples and seven healthy controls) were downloaded from Gene Expression Omnibus database. Characteristic genes were identified using metaDE package. WGCNA was used to find disease-related networks based on gene expression correlation coefficients, and module significance was defined as the average gene significance of all genes used to assess the correlation between the module and RA status...
April 25, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28389653/identification-of-igf-1-enhanced-cytokine-expressions-targeted-by-mir-181d-in-glioblastomas-via-an-integrative-mirna-mrna-regulatory-network-analysis
#15
Kuo-Hao Ho, Peng-Hsu Chen, Edward Hsi, Chwen-Ming Shih, Wei-Chiao Chang, Chia-Hsiung Cheng, Cheng-Wei Lin, Ku-Chung Chen
The insulin-like growth factor (IGF)-1 signaling is relevant in regulating cell growth and cytokine secretions by glioblastomas. MicroRNAs determine the cell fate in glioblastomas. However, relationships between IGF-1 signaling and miRNAs in glioblastoma pathogenesis are still unclear. Our aim was to validate the IGF-1-mediated mRNA/miRNA regulatory network in glioblastomas. Using in silico analyses of mRNA array and RNA sequencing data from The Cancer Genome Atlas (TCGA), we identified 32 core enrichment genes that were highly associated with IGF-1-promoted cytokine-cytokine receptor interactions...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28362325/possible-roles-of-cc-and-cxc-chemokines-in-regulating-bovine-endometrial-function-during-early-pregnancy
#16
Ryosuke Sakumoto, Ken-Go Hayashi, Shiori Fujii, Hiroko Kanahara, Misa Hosoe, Tadashi Furusawa, Keiichiro Kizaki
The aim of the present study was to determine the possible roles of chemokines in regulating bovine endometrial function during early pregnancy. The expression of six chemokines, including CCL2, CCL8, CCL11, CCL14, CCL16, and CXCL10, was higher in the endometrium at 15 and 18 days of pregnancy than at the same days in non-pregnant animals. Immunohistochemical staining showed that chemokine receptors (CCR1, CCR2, CCR3, and CXCR3) were expressed in the epithelial cells and glandular epithelial cells of the bovine endometrium as well as in the fetal trophoblast obtained from a cow on day 18 of pregnancy...
March 31, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28341057/histone-deacetylase-inhibitors-suppress-immature-dendritic-cell-s-migration-by-regulating-cc-chemokine-receptor-1-expression
#17
Young-Hoon Kim, Jae Kwon Lee
The modulation of immature dendritic cells (iDCs), which involves processes such as phagocytosis, migration, and maturation, is considered a beneficial research theme. Once activated by an antigen, iDCs turn to mature DCs (mDCs) and migrate towards secondary lymphoid organs, and initiate the progress of cellular immunity. Histone deacetylase inhibitors (HDACis) are also thought to be a major modulator of cellular immunity. Herein, we demonstrate that HDACis (trichostatin-A (TSA), sodium butylate (SB), scriptaid (ST)) play a central regulatory role in the migratory activity of iDCs...
February 28, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28315475/evolution-of-the-ability-to-modulate-host-chemokine-networks-via-gene-duplication-in-human-cytomegalovirus-hcmv
#18
Jessica A Scarborough, John R Paul, Juliet V Spencer
Human cytomegalovirus (HCMV) is a widespread pathogen that is particularly skillful at evading immune detection and defense mechanisms, largely due to extensive co-evolution with its host. One aspect of this co-evolution involves the acquisition of virally encoded G protein-coupled receptors (GPCRs) with homology to the chemokine receptor family. GPCRs are the largest family of cell surface proteins, found in organisms from yeast to humans, and they regulate a variety of cellular processes including development, sensory perception, and immune cell trafficking...
July 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28216148/epigenetic-modification-of-the-ccl5-ccr1-erk-axis-enhances-glioma-targeting-in-dedifferentiation-reprogrammed-bmscs
#19
Rui Chen, Wayne Yuk-Wai Lee, Xiao Hu Zhang, Jie Ting Zhang, Sien Lin, Liang Liang Xu, Biao Huang, Fu Yuan Yang, Hai Long Liu, Bin Wang, Lai Ling Tsang, Sandrine Willaime-Morawek, Gang Li, Hsiao Chang Chan, Xiaohua Jiang
The success of stem cell-mediated gene therapy in cancer treatment largely depends on the specific homing ability of stem cells. We have previously demonstrated that after in vitro induction of neuronal differentiation and dedifferentiation, bone marrow stromal cells (BMSCs) revert to a primitive stem cell population (De-neu-BMSCs) distinct from naive BMSCs. We report here that De-neu-BMSCs express significantly higher levels of chemokines, and display enhanced homing abilities to glioma, the effect of which is mediated by the activated CCL5/CCR1/ERK axis...
March 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28192408/macrophages-confer-survival-signals-via-ccr1-dependent-translational-mcl-1-induction-in-chronic-lymphocytic-leukemia
#20
M H A van Attekum, S Terpstra, E Slinger, M von Lindern, P D Moerland, A Jongejan, A P Kater, E Eldering
Protective interactions with bystander cells in micro-environmental niches, such as lymph nodes (LNs), contribute to survival and therapy resistance of chronic lymphocytic leukemia (CLL) cells. This is caused by a shift in expression of B-cell lymphoma 2 (BCL-2) family members. Pro-survival proteins B-cell lymphoma-extra large (BCL-XL), BCL-2-related protein A1 (BFL-1) and myeloid leukemia cell differentiation protein 1 (MCL-1) are upregulated by LN-residing T cells through CD40L interaction, presumably via nuclear factor (NF)-κB signaling...
February 13, 2017: Oncogene
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