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https://www.readbyqxmd.com/read/29150931/microrna-497-accelerates-apoptosis-while-inhibiting-proliferation-migration-and-invasion-through-negative-regulation-of-the-mapk-erk-signaling-pathway-via-raf-1
#1
Ling Tao, Xia Li, Na-Na Han, Qi Zhou, Zhi-Le Liu
The aim of this study is to explore the various modes of action miR-497 has on human cervical cancer (CC) cell behavior. We also speculate that miR-497 achieves its anti-tumor role by governing RAF-1 via MAPK/ERK signaling pathway. CC tissues with corresponding adjacent normal tissues were collected from 168 CC patients. RAF-1-positive cells were identified by means of immunohistochemistry in tissues. A series of inhibitors, mimics and siRNA against RAF-1 were introduced to validate regulatory mechanisms for miR-497 and RAF-1...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29150565/the-role-of-macrophages-in-the-response-to-tnf-inhibition-in-experimental-arthritis
#2
Qi-Quan Huang, Robert Birkett, Renee Doyle, Bo Shi, Elyssa L Roberts, Qinwen Mao, Richard M Pope
The reduction of synovial tissue macrophages is a reliable biomarker for clinical improvement in patients with rheumatoid arthritis (RA), and macrophages are reduced in synovial tissue shortly after initiation of TNF inhibitors. The mechanism for this initial response is unclear. These studies were performed to identify the mechanisms responsible for the initial reduction of macrophages following TNF inhibition, positing that efflux to draining lymph nodes was involved. RA synovial tissue and synovial fluid macrophages expressed CCR7, which was increased in control macrophages following incubation with TNF-α...
November 17, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29150462/comprehensive-analysis-of-vitreous-specimens-for-uveitis-classification-a-prospective-multicentre-observational-study
#3
Kazuichi Maruyama, Tohru Inaba, Sunao Sugita, Ryo Ichinohasama, Kenji Nagata, Shigeru Kinoshita, Manabu Mochizuki, Toru Nakazawa
PURPOSE: To determine the clinical relevance of vitreous biomarkers in patients with uveitis. DESIGN: Multicentre, prospective, observational study. SETTING: Uveitis outpatient clinics of two academic medical centres in Japan. PATIENT POPULATION: This study included 234 eyes of 191 patients with various uveitis aetiologies: definitive sarcoidosis (61 eyes of 46 patients), suspected sarcoidosis (60 eyes of 45 patients), intraocular tumour (34 eyes of 27 patients), viral infection (20 eyes of 18 patients), non-sarcoidosis (16 eyes of 16 patients) and unknown aetiology (43 eyes of 39 patients)...
November 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/29150291/ruxolitinib-conjugated-gold-nanoparticles-for-topical-administration-an-alternative-for-treating-alopecia
#4
Sanda Boca, Cristian Berce, Ancuta Jurj, Bobe Petrushev, Laura Pop, Grigore-Aristide Gafencu, Sonia Selicean, Vlad Moisoiu, Daiana Temian, Wilhelm-Thomas Micu, Simion Astilean, Cornelia Braicu, Ciprian Tomuleasa, Ioana Berindan-Neagoe
Alopecia is a dermatological condition for which Janus kinase (JAK) inhibitors have recently emerged as potential therapy options, but with limited practical use because of the systemic side effects. The topical use of Ruxolitinib in alopecia universalis has been demonstrated, but little is known about the pharmacodynamics and pharmacokinetics of this way of administration. Nanomedicine provides improved therapeutics. In the current paper we present preliminary data regarding the potential use of Ruxolitinib-conjugated gold nanoparticles (GNPs) in dermatological conditions, as GNPs have been proven to have a reduced absorption rate into the systemic blood flow for cutaneous administration...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29150077/unique-arginine-array-improves-cytosolic-localization-of-hydrocarbon-stapled-peptides
#5
Kim Quach, Jonathan LaRochelle, Xiao-Han Li, Elizabeth Rhoades, Alanna Schepartz
We have previously reported that miniature proteins containing a distinct array of 5 arginine residues on a folded α-helix - a penta-arg motif - traffic with high efficiency from endosomes into the cytosol and nucleus of mammalian cells. Here we evaluate whether a penta-arg motif can improve the intracellular trafficking of an otherwise impermeant hydrocarbon-stapled peptide, SAH-p53-4(Rho). We prepared a panel of SAH-p53-4(Rho) variants containing penta-arg sequences with different spacings and axial arrangement and evaluated their overall uptake (as judged by flow cytometry) and their intracellular access (as determined by fluorescence correlation spectroscopy, FCS)...
November 7, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29150026/regulatory-t-cells-friends-or-foe-in-human-mycobacterium-leprae-infection
#6
Ana T Chaves, Atvaldo F Ribeiro-Junior, Sandra Lyon, Nayara I Medeiros, Fábio Cassirer-Costa, Karina S Paula, Edilamar S Alecrim, Cristiane A S Menezes, Rodrigo Correa-Oliveira, Manoel O C Rocha, Juliana A S Gomes
Regulatory T cells (Tregs) are known to control immune responses by suppressing the antigen-presenting and effector T cells. Some mechanisms adopted by Tregs in combating Mycobacterium infections have been proposed. Nevertheless, in M. leprae infection, also known as leprosy or Hansen's disease, the role of Tregs has not been completely elucidated. Using multicolor flow cytometry, we evaluated the expression of different cell surface and intracellular molecules present in Tregs from peripheral blood samples of leprosy patients...
November 13, 2017: Immunobiology
https://www.readbyqxmd.com/read/29149986/effects-of-cyclosporine-tacrolimus-and-rapamycin-on-osteoblasts
#7
M Martín-Fernández, M Rubert, M Montero, C de la Piedra
PURPOSE: One factor that can contribute to severe bone loss after transplantation is the direct action of immunosuppressants on bone cells. The aim of this work was to study the effects of cyclosporine (CsA), tacrolimus (FK-506), and rapamycin (RAPA) on the release of three local factors directly implicated in bone-remodeling regulation and apoptosis of human osteoblasts: interleukin (IL)-6, osteoprotegerin, and receptor activator of nuclear factor κβ (RANKL). BASIC PROCEDURES: Human osteoblasts were obtained from five different patients who underwent orthopedic surgery...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29149784/anti-inflammatory-property-of-%C3%AE-d-mannuronic-acid-m2000-on-expression-and-activity-of-matrix-metalloproteinase-2-and-9-through-cd147-molecule-in-phorbol-myristate-acetate-differentiated-thp-1-cells
#8
Mohadese M Farahani, Elahe Motevaseli, Faezeh Maghsood, Maryam Heidari-Kharaji, Abbas Mirshafiey
The aim of this study was to evaluate the effects of M2000, a novel non-steroidal anti-inflammatory drug (NSAID) with immunosuppressive property and without gastro-nephrotoxicitic effects on matrix metalloproteinases (MMP)-2 and (MMP)-9 in phorbol myristate acetate (PMA)-differentiated THP-1 cells. Gene expression and activity of MMP-2 and MMP-9 are inhibited respectively by the tissue inhibitor of matrix metalloproteinase (TIMP)-2 and (TIMP)-1 and are induced by extracellular matrix metalloproteinase inducer (CD147/EMMPRIN)...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149782/frequency-of-circulatory-regulatory-immune-cells-in-iranian-patients-with-type-1-diabetes
#9
Tahereh Khamehchian, Eqlim Nemati, Marziyeh Jazayeri, Shirin Azimi, Hassan Nikoueinejad, Hossein Akbari, Behnaz Irandoust
Type 1 diabetes (T1D) is the result of the autoimmune destruction of insulin-producing beta cells. Regulatory T cells (Tregs) and plasmacytoid dendritic cells (PDCs) act as mediators of peripheral tolerance. We investigated the possible alterations of such cells in peripheral blood of patients with T1D compared to normal individuals. This comparison may lead to a better understanding of the immunopathogenesis processes involved in T1D. 92 participants, including 49 patients with T1D and 43 healthy controls were studied...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149781/macrophages-from-behcet-s-disease-patients-express-decreased-level-of-aryl-hydrocarbon-receptor-ahr-mrna
#10
Mohammad Taghi Palizgir, Maryam Akhtari, Mahdi Mahmoudi, Shayan Mostafaei, Alireza Rezaeimanesh, Massoomeh Akhlaghi, Farhad Shahram
Aryl hydrocarbon receptor (AHR) is a ligand-activated transcription factor, connecting environmental stimulators with the immune system. M1 macrophages are a part of immune system that contribute to the inflammatory events in the pathogenesis of Behcet's disease (BD). The effect of AHR on the macrophages in BD patients is still unclear. In this study, we investigated the mRNA expression of AHR in the monocyte-derived and M1 macrophages in active BD patients in comparison to healthy controls. Isolated monocytes from 10 healthy controls and 10 active BD patients were differentiated to macrophages by macrophage-colony stimulating factor (M-CSF) for 7 days...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149780/interleukin-37-relieves-allergic-inflammation-in-a-house-dust-mite-allergic-rhinitis-murine-model
#11
Do Hyun Kim, Si Won Kim, Soo Whan Kim, Jun-Myung Kang
The purpose of this study was to investigate the effects of interleukin-37 (IL-37) on a Dermatophagoides farinae (Der f)-induced murine model of allergic rhinitis (AR). BALB/c mice, except the control groups, were sensitized intraperitoneally and challenged intranasally with Der f (Der f group). The IL-37 and IL-37+anti-CD25 groups were administered IL-37 intranasally. The IL-37+anti-CD25 groups were administered anti-CD25 monoclonal antibody intraperitoneally before challenge. Allergic symptoms and the average eosinophil number were counted...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149778/the-changes-of-th17-treg-and-related-cytokines-il-17-il-23-il-10-and-tgf-%C3%AE-in-respiratory-syncytial-virus-bronchiolitis-rat-model
#12
Meng Gao, Liang-Xiao Liu, Fu-Ling Wu, Xuejing Zhang, Ying-Ying Li, Tao Shi, De-Zhi Li, Ting-Ting Han
Respiratory syncytial virus (RSV) is the leading cause of bronchiolitis and hospitalization that lead to high morbidity and mortality among young infants. T helper 17 (Th17) cells and regulatory T cells (Tregs) play essential roles in the pathogenesis of autoimmune, cancer, and inflammatory diseases. However, whether changes in T-cell subsets are related to the systemic immune responses in RSV-caused bronchiolitis merit further investigation. Three-week-old Sprague Dawley (SD) rats were randomly divided into the normal control (NC) and RSV bronchiolitis (RSV-B) groups...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149703/quercetin-attenuates-collagen-induced-arthritis-by-restoration-of-th17-treg-balance-and-activation-of-heme-oxygenase-1-mediated-anti-inflammatory-effect
#13
Yan Yang, Xu Zhang, Min Xu, Xin Wu, Feipeng Zhao, Chengzhi Zhao
Quercetin (QU) has been shown obvious anti-arthritic property in pre-clinical studies or clinical studies. Howbeit, the underlying mechanism of it is still not revealed distinctly and should be gotten further insight into. QU at a dosage of 150 mg/kg was administered orally in collagen-induced arthritis rats and then the clinical symptoms were monitored. The protein levels of Th17/Treg-related cytokines were determined by ELISA, and the mRNA levels of cytokines and transcription factors associated with the Th17 and Treg phenotypes were evaluated by real-time PCR, the proportions of Th17 and Treg cells were assessed by flow cytometry...
November 14, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29149105/lgr5-expression-is-regulated-by-egf-in-early-colorectal-adenomas-and-governs-egfr-inhibitor-sensitivity
#14
R G Morgan, E Mortensson, D N Legge, B Gupta, T J Collard, A Greenhough, A C Williams
BACKGROUND: LGR5 serves as a co-receptor for Wnt/β-catenin signalling and marks normal intestinal stem cells; however, its role in colorectal cancer (CRC) remains controversial. LGR5(+) cells are known to exist outside the stem cell niche during CRC progression, and the requirement for epidermal growth factor (EGF) signalling within early adenomas remains to be fully elucidated. METHODS: Epidermal growth factor and gefitinib treatments were performed in EGF-responsive LGR5(+) early adenoma RG/C2 cells...
November 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29148756/inhibitory-activities-of-compounds-from-the-marine-actinomycete-williamsia-sp-mccc-1a11233-variant-on-ige-mediated-mast-cells-and-passive-cutaneous-anaphylaxis
#15
Yuanyuan Gao, Qingmei Liu, Bo Liu, Chun-Lan Xie, Min-Jie Cao, Xian-Wen Yang, Guang-Ming Liu
Compounds of the deep-sea-derived marine Williamsia sp. MCCC 1A11233 (CDMW), which are secondary metabolites of the actinomycetes, were isolated. In this study, seven kinds of CDMW were found to decrease degranulation and histamine release in immunoglobulin E (IgE)-mediated rat basophilic leukemia (RBL)-2H3 cells. The production of cytokines (tumor necrosis factor-α and interleukin-4) was inhibited by these CDMW in RBL-2H3 cells, and their chemical structures were established mainly based on detailed analysis of their NMR spectra...
November 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29148754/eurycomalactone-inhibits-expression-of-endothelial-adhesion-molecules-at-a-post-transcriptional-level
#16
Clemens Malainer, Daniel Schachner, Enrico Sangiovanni, Atanas G Atanasov, Stefan Schwaiger, Hermann Stuppner, Elke H Heiss, Verena M Dirsch
The C-19 quassinoid eurycomalactone (1) has recently been shown to be a potent (IC50 = 0.5 μM) NF-κB inhibitor in a luciferase reporter model. In this study, we show that 1 with similar potency inhibited the expression of the NF-κB-dependent target genes ICAM-1, VCAM-1, and E-selectin in TNFα-activated human endothelial cells (HUVECtert) by flow cytometry experiments. Surprisingly, 1 (2 μM) did not inhibit TNFα-induced IKKα/β or IκBα phosphorylation significantly. Also, the TNFα-induced degradation of IκBα remained unchanged in response to 1 (2 μM)...
November 17, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29148707/versatile-supermolecular-inclusion-complex-based-on-host-guest-interaction-for-targeted-gene-delivery
#17
Yunxia Sun, Jingyi Zhu, Wen-Xiu Qiu, Qi Lei, Si Chen, Xian-Zheng Zhang
A facile and targeted gene delivery system was prepared by conjugating β-cyclodextrin modified polyethylenimine (PEI-CD) and adamantyl peptide (AdGRGDS) based on host-guest interaction. With the rational design between PEI-CD and AdGRGDS, PEI-CD/AdGRGDS gene delivery system showed excellent DNA binding capability, and exhibited good ability to compact DNA into uniform spherical nanoparticles. In vitro luciferase assay showed that gene expression transfected by PEI-CD/AdGRGDS was stronger than that by PEI-CD in HeLa cells, whereas, gene expression transfected by PEI-CD/AdGRGDS and PEI-CD was similar to each other in COS7 cells...
November 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29148621/guidelines-for-the-use-of-flow-cytometry
#18
EDITORIAL
Marc Veldhoen
No abstract text is available yet for this article.
December 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29148254/connecting-color-with-assembly-in-the-fluorescent-b-phycoerythrin-protein-complex
#19
Aneika C Leney, Aline Tschanz, Albert J R Heck
Phycoerythrin is the major light-harvesting pigment protein in red algae and is nowadays widely used as a fluorescent probe in biotechnological applications such as flow cytometry and immunofluorescence microscopy. In addition, it has had substantial economic impact due to its potential as a natural food colorant. However, knowledge on the precise molecular composition of phycoerythrin is limited. Here, we use a combination of high resolution native mass spectrometry (MS) and fluorescence spectroscopy to characterize the assembly properties of the B-phycoerythrin protein complex from Porphyridium cruentum...
November 17, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29148014/unfavorable-clinical-implications-of-peripheral-blood-cd44-and-cd54-lymphocytes-in-patients-with-lung-cancer-undergoing-chemotherapy
#20
Zhuanbo Luo, Yun Wang, Yanru Lou, Chao Cao, Richard Hubbard, Ning Xu, Xiaoping Huang
BACKGROUND: There is an unmet need for identification of additional prognostic markers for lung cancer. The aim of this study was to identify novel clinical and immunological predictors of prognosis in lung cancer patients. METHODS: Lymphocyte subsets CD3+, CD4+, CD8+, CD4+/8+, CD25+, CD69+, CD44+ and CD54+ were quantified in peripheral blood using flow cytometry, for 203 newly diagnosed lung cancer patients and 120 healthy controls. RESULTS: The levels of CD3+, CD4+, CD8+, CD4+/CD8+ and CD69+ lymphocytes were significantly lower in patients with lung cancer compared with the healthy control group, while CD54+ and CD44+ lymphocytes were significantly higher...
November 15, 2017: International Journal of Biological Markers
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