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https://www.readbyqxmd.com/read/29116124/monocytes-from-patients-with-primary-ciliary-dyskinesia-show-enhanced-inflammatory-properties-and-produce-higher-levels-of-pro-inflammatory-cytokines
#1
M Cockx, M Gouwy, P Ruytinx, I Lodewijckx, A Van Hout, S Knoops, N Pörtner, I Ronsse, L Vanbrabant, V Godding, K De Boeck, J Van Damme, M Boon, S Struyf
Patients with Primary Ciliary Dyskinesia (PCD) suffer from recurrent upper and lower airway infections due to defects in the cilia present on the respiratory epithelium. Since chronic inflammatory conditions can cause changes in innate immune responses, we investigated whether monocytes isolated from the peripheral blood of pediatric PCD patients respond differently to inflammatory stimuli, compared to monocytes from healthy children and adults. The receptor for C5a (C5aR) was upregulated in PCD, whereas expression levels of the leukocyte chemoattractant receptors CCR1, CCR2, CCR5, BLT1 and FPR1 on PCD monocytes were similar to those on monocytes from healthy individuals...
November 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29050986/rac1-plays-a-role-in-cxcl12-but-not-ccl3-induced-chemotaxis-and-rac1-gef-inhibitor-nsc23766-has-off-target-effects-on-cxcr4
#2
Shirley C Mills, Lesley Howell, Andrew Beekman, Leanne Stokes, Anja Mueller
Cell migration towards a chemotactic stimulus relies on the re-arrangement of the cytoskeleton, which is triggered by activation of small G proteins RhoA, Rac1 and Cdc42, and leads to formation of lamellopodia and actin polymerisation amongst other effects. Here we show that Rac1 is important for CXCR4 induced chemotaxis but not for CCR1/CCR5 induced chemotaxis. For CXCL12-induced migration via CXCR4, breast cancer MCF-7 cells are reliant on Rac1, similarly to THP-1 monocytes and Jurkat T-cells. For CCL3-induced migration via CCR1 and/or CCR5, Rac1 signalling does not regulate cell migration in either suspension or adherent cells...
October 16, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28965882/the-inhibition-of-5-lipoxygenase-5-lo-products-leukotriene-b4-ltb4-and-cysteinyl-leukotrienes-cyslts-modulates-the-inflammatory-response-and-improves-cutaneous-wound-healing
#3
Francielle Rodrigues Guimarães, Helioswilton Sales-Campos, Viviani Nardini, Thiago Alvares da Costa, Monique Thaís Costa Fonseca, Virmondes Rodrigues Júnior, Carlos Artério Sorgi, João Santana da Silva, Javier Emílio Lazo Chica, Lúcia Helena Faccioli, Cristina Ribeiro de Barros Cardoso
To analyze the participation of the enzyme 5-lipoxygenase (5-LO) in skin repair, WT wounds were compared to those in 5-LO deficient mice (5-LO(-/-)), which presented faster closure and reduced inflammatory infiltrate in the skin, together with increased CD4 regulatory T cells markers in the draining lymph nodes. The 5-LO(-/-) wounds also had diminished TNF-α, CCL11, CCL7, CCL2, CXCL9, CCR1 and CXCR2 mRNA expression in the lesions, besides differential extracellular matrix remodeling. Furthermore, when cysteinyl leukotriene (cysLT) and leukotriene (LTB4) receptors were antagonized in WT mice, there was a remarkable reduction in TNF-α expression and faster skin healing, similarly to the findings in 5-LO(-/-) animals...
September 28, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28954264/basophil-recruitment-to-skin-lesions-of-patients-with-systemic-lupus-erythematosus-mediated-by-ccr1-and-ccr2
#4
Qingjun Pan, Yongmin Feng, Yanxia Peng, Hongjiu Zhou, Zhenzhen Deng, Lu Li, Huanqin Han, Jieping Lin, Lei Shi, Shujun Wang, Ning An, Chen Yang, Hua-Feng Liu
BACKGROUND/AIMS: Basophils have been reported to infiltrate skin lesions in various skin diseases, but not in systemic lupus erythematosus (SLE). This study investigated basophil infiltration in SLE and its mechanism. METHODS: Twenty newly diagnosed SLE patients and twenty healthy controls were enrolled. Nine SLE patients underwent skin biopsies. Flow cytometric analysis the phenotype of peripheral basophils and their migration rate toward RANTES and MCP-1 were analyzed with the transwell culture system, also the expression of these two chemokines in skin tissue were analyzed with immunohistochemistry...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28936366/constitutive-and-stress-induced-expression-of-ccl5-machinery-in-rodent-retina
#5
D'Anne S Duncan, William M McLaughlin, Noah Vasilakes, Franklin D Echevarria, Cathryn R Formichella, Rebecca M Sappington
Signaling by inflammatory cytokines and chemokines is associated with neurodegeneration in disease and injury. Here we examined expression of the β-chemokine CCL5 and its receptors in the mouse retina and evaluated its relevance in glaucoma, a common optic neuropathy associated with sensitivity to intraocular pressure (IOP). Using quantitative PCR, fluorescent in situ hybridization, immunohistochemistry and quantitative image analysis, we found CCL5 mRNA and protein was constitutively expressed in the inner retina and synaptic layers...
June 2017: Journal of Clinical & Cellular Immunology
https://www.readbyqxmd.com/read/28931687/a-dna-vaccine-that-targets-hemagglutinin-to-antigen-presenting-cells-protects-mice-against-h7-influenza
#6
Tor Kristian Andersen, Fan Zhou, Rebecca Cox, Bjarne Bogen, Gunnveig Grødeland
Zoonotic influenza H7 viral infections have a case fatality rate of about 40%. Currently no or limited human to human spread has occurred, but we may be facing a severe pandemic threat if the virus acquires the ability to transmit between humans. Novel vaccines that can be rapidly produced for global distribution are urgently needed, and DNA vaccines may be the only type of vaccine that allows for the speed necessary to quench an emerging pandemic. Here, we have constructed DNA vaccines encoding the hemagglutinin (HA) from influenza A/chicken/Italy/13474/99 (H7N1)...
September 20, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28895406/identification-of-potential-key-genes-associated-with-diffuse-large-b-cell-lymphoma-based-on-microarray-gene-expression-profiling
#7
X Luo, F Shi, H Qiu, Y Tong, X Gao
The study aimed to screen potential key genes, and their targeted miRNAs and transcription factors (TFs) that were related to diffuse large B-cell lymphoma (DLBCL), and explore potential therapeutic targets for the progression of DLBCL. Dataset GSE56315 extracted from human tonsils was downloaded from Gene Expression Omnibus. Limma package was used to identify differential expression genes (DEG) between DLBCL and normal human tonsils samples, and the function and pathway enrichment analyses were performed. Then, functional interaction (FI) networks analyses of DEGs were implemented, and modules were extracted...
September 12, 2017: Neoplasma
https://www.readbyqxmd.com/read/28892735/expression-of-the-chemokine-receptors-ccr1-and-ccr2b-is-up-regulated-in-peripheral-blood-b-cells-upon-ebv-infection-and-in-established-lymphoblastoid-cell-lines
#8
Irina Kholodnyuk, Zanna Rudevica, Ainars Leonciks, Barbro Ehlin-Henriksson, Elena Kashuba
In immunocompetent individuals, EBV establishes in B cells an asymptomatic lifelong latent infection controlled by the immune system. Chemokine receptors regulate immune system function. CCR1 and CCR2 share protein sequence similarity and exert responses to multiple chemokines. The role of these receptors in B cells is largely unknown. We show that the mRNA and functional protein expression of CCR1 and CCR2 is induced in ex vivo B cells upon EBV infection and in established lymphoblastoid cell lines (LCLs)...
December 2017: Virology
https://www.readbyqxmd.com/read/28881626/relevance-of-ccl3-ccr5-axis-in-oral-carcinogenesis
#9
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)...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28880739/methionine-supplemented-diet-affects-the-expression-of-cardiovascular-disease-related-genes-and-increases-inflammatory-cytokines-in-mice-heart-and-liver
#10
Alexandre Ferro Aissa, Catia Lira do Amaral, Vinicius Paula Venancio, Carla da Silva Machado, Lívia Cristina Hernandes, Patrick Wellington da Silva Santos, Rui Curi, Maria de Lourdes Pires Bianchi, Lusânia Maria Greggi Antunes
Some important environmental factors that influence the development of cardiovascular diseases (CVD) include tobacco, excess alcohol, and unhealthy diet. Methionine obtained from the diet participates in the synthesis of DNA, proteins, lipids and affects homocysteine levels, which is associated with the elevated risk for CVD development. Therefore, the aim of this study was to investigate the manner in which dietary methionine might affect cellular mechanisms underlying CVD occurrence. Swiss albino mice were fed either control (0...
September 7, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28855206/hif-2%C3%AE-promotes-dissemination-of-plasma-cells-in-multiple-myeloma-by-regulating-cxcl12-cxcr4-and-ccr1
#11
Kate Vandyke, Mara N Zeissig, Duncan R Hewett, Sally K Martin, Krzysztof M Mrozik, Chee Man Cheong, Peter Diamond, L Bik To, Stan Gronthos, Daniel J Peet, Peter I Croucher, Andrew C W Zannettino
Disease progression and relapse in multiple myeloma is dependent on the ability of the multiple myeloma plasma cells (PC) to reenter the circulation and disseminate throughout the bone marrow. Increased bone marrow hypoxia is associated with increased recirculation of multiple myeloma PCs. Accordingly, we hypothesized that during chronic hypoxia, activation of HIF-2α may overcome the bone marrow retention signal provided by stromal-derived CXCL12, thereby enabling dissemination of multiple myeloma PCs. Here we demonstrate that HIF-2α upregulates multiple myeloma PC CXCL12 expression, decreasing migration toward CXCL12 and reducing adhesion to mesenchymal stromal cells in vitro We also found that HIF-2α strongly induced expression of the chemokine receptor CCR1 in multiple myeloma PCs...
October 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28763842/-effect-of-ccr1-gene-overexpression-on-the-migration-of-bone-marrow-derived-mesenchymal-stem-cells-towards-hepatocellular-carcinoma
#12
Y Gao, X L Huang, L Zhang, L Deng, A H Yin, B C Sun, S Lu
Objective: To evaluate the effect of human CCR1 (hCCR1) gene overexpression on the migration of human bone marrow-derived mesenchymal stem cells (hMSCs) towards hepatocellular carcinoma (HCC), and to examine the application prospects of MSCs as gene delivery vectors in the treatment of HCC. Methods: The hCCR1 gene was subcloned into a lentiviral vector to generate the recombinant plasmid pLV-hCCR1. The pLV-hCCR1 plasmid and two other packaging plasmids were co-transfected into 293T cells using calcium phosphate, and the virus-containing supernatant was collected...
May 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28757683/chemokines-ccl3-ccl4-and-ccl5-inhibit-atp-induced-release-of-il-1%C3%AE-by-monocytic-cells
#13
Anca-Laura Amati, Anna Zakrzewicz, Kathrin Siebers, Sigrid Wilker, Sarah Heldmann, Dariusz Zakrzewicz, Andreas Hecker, J Michael McIntosh, Winfried Padberg, Veronika Grau
Chemokines and ATP are among the mediators of inflammatory sites that can enter the circulation via damaged blood vessels. The main function of chemokines is leukocyte mobilization, and ATP typically triggers inflammasome assembly. IL-1β, a potent inflammasome-dependent cytokine of innate immunity, is essential for pathogen defense. However, excessive IL-1β may cause life-threatening systemic inflammation. Here, we hypothesize that chemokines control ATP-dependent secretion of monocytic IL-1β. Lipopolysaccharide-primed human monocytic U937 cells were stimulated with the P2X7 agonist BzATP for 30 min to induce IL-1β release...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28732768/molecular-characterization-and-expression-analysis-of-four-fish-specific-cc-chemokine-receptors-ccr4la-ccr4lc1-ccr4lc2-and%C3%A2-ccr11-in-rainbow-trout-oncorhynchus-mykiss
#14
Zhitao Qi, Jason W Holland, Yousheng Jiang, Christopher J Secombes, Pin Nie, Tiehui Wang
The chemokine and chemokine receptor networks regulate leukocyte trafficking, inflammation, immune cell differentiation, cancer and other biological processes. Comparative immunological studies have revealed that both chemokines and their receptors have expanded greatly in a species/lineage specific way. Of the 10 human CC chemokine receptors (CCR1-10) that bind CC chemokines, orthologues only to CCR6, 7, 9 and 10 are present in teleost fish. In this study, four fish-specific CCRs, termed as CCR4La, CCR4Lc1, CCR4Lc2 and CCR11, with a close link to human CCR1-5 and 8, in terms of amino acid homology and syntenic conservation, have been identified and characterized in rainbow trout (Oncorhynchus mykiss)...
July 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28701512/imatinib-and-nilotinib-off-target-effects-on-human-nk-cells-monocytes-and-m2-macrophages
#15
Francesca Bellora, Alessandra Dondero, Maria Valeria Corrias, Beatrice Casu, Stefano Regis, Fabio Caliendo, Alessandro Moretta, Mario Cazzola, Chiara Elena, Luciana Vinti, Franco Locatelli, Cristina Bottino, Roberta Castriconi
Tyrosine kinase inhibitors (TKIs) are used in the clinical management of hematological neoplasms. Moreover, in solid tumors such as stage 4 neuroblastomas (NB), imatinib showed benefits that might depend on both on-target and immunological off-target effects. We investigated the effects of imatinib and nilotinib on human NK cells, monocytes, and macrophages. High numbers of monocytes died upon exposure to TKI concentrations similar to those achieved in patients. Conversely, NK cells were highly resistant to the TKI cytotoxic effect, were properly activated by immunostimulatory cytokines, and degranulated in the presence of NB cells...
August 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28694169/differential-expression-and-functional-roles-of-chemokine-c-c-motif-ligand-23-and-its-receptor-chemokine-c-c-motif-receptor-type-1-in-the-uterine-endometrium-during-early-pregnancy-in-pigs
#16
Wooyoung Jeong, Hyocheol Bae, Whasun Lim, Fuller W Bazer, Gwonhwa Song
Many chemokines expressed by cells of the uterine endometrium of mammals are involved in cell-cell interactions. However, little is known about expression and functional roles of chemokine (C-C motif) ligand 23 (CCL23) in the uterine endometrium. Results of this study demonstrated that CCL23 and its receptor, chemokine (C-C motif) receptor type 1 (CCR1), are up-regulated in porcine endometria during pregnancy. CCL23 and CCR1 mRNAs were strongly expressed in endometrial glandular (GE) and luminal (LE) epithelial cells...
July 8, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28687661/a-systems-vaccinology-approach-reveals-temporal-transcriptomic-changes-of-immune-responses-to-the-yellow-fever-17d-vaccine
#17
Jue Hou, Shuhui Wang, Manxue Jia, Dan Li, Ying Liu, Zhengpeng Li, Hong Zhu, Huifang Xu, Meiping Sun, Li Lu, Zhinan Zhou, Hong Peng, Qichen Zhang, Shihong Fu, Guodong Liang, Lena Yao, Xuesong Yu, Lindsay N Carpp, Yunda Huang, Julie McElrath, Steve Self, Yiming Shao
In this study, we used a systems vaccinology approach to identify temporal changes in immune response signatures to the yellow fever (YF)-17D vaccine, with the aim of comprehensively characterizing immune responses associated with protective immunity. We conducted a cohort study in which 21 healthy subjects in China were administered one dose of the YF-17D vaccine; PBMCs were collected at 0 h and then at 4 h and days 1, 2, 3, 5, 7, 14, 28, 84, and 168 postvaccination, and analyzed by transcriptional profiling and immunological assays...
August 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28663258/ly6c-high-monocytes-oscillate-in-the-heart-during-homeostasis-and-after-myocardial-infarction-brief-report
#18
Maximilian J Schloss, Michael Hilby, Katrin Nitz, Raquel Guillamat Prats, Bartolo Ferraro, Giovanna Leoni, Oliver Soehnlein, Thorsten Kessler, Wenyan He, Bruno Luckow, Michael Horckmans, Christian Weber, Johan Duchene, Sabine Steffens
OBJECTIVE: Circadian regulation of neutrophil homeostasis affects myocardial infarction (MI) healing. It is unknown whether diurnal variations of monocyte counts exist in the heart and whether this affects their cardiac infiltration in response to MI. APPROACH AND RESULTS: Murine blood and organs were harvested at distinct times of day and analyzed by flow cytometry. Ly6C(high) monocyte surface expression levels of chemokine receptors (CCR) were ≈2-fold higher at the beginning of the active phase, Zeitgeber Time (ZT) 13 compared with ZT5...
September 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
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
#19
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
#20
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
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