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Syndecan

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https://www.readbyqxmd.com/read/29141852/collagen-alignment-as-a-predictor-of-recurrence-after-ductal-carcinoma-in-situ
#1
Matthew W Conklin, Ronald E Gangnon, Brian L Sprague, Lisa van Germert, John M Hampton, Kevin W Eliceiri, Jeremy S Bredfeldt, Yuming Liu, Nuntida Surachaicharn, Polly A Newcomb, Andreas Friedl, Patricia Keely, Amy Trentham-Dietz
BACKGROUND: Collagen fibers surrounding breast ducts may influence breast cancer progression. Syndecan-1 interacts with constituents in the extracellular matrix, including collagen fibers, and may contribute to cancer cell migration. Thus, the orientation of collagen fibers surrounding ductal carcinoma in situ (DCIS) lesions and stromal syndecan-1 expression may predict recurrence. METHODS: We evaluated collagen fiber alignment and syndecan-1 expression in 227 women diagnosed with DCIS in 1995-2006 followed through 2014 (median 14...
November 15, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29121646/the-phosphomimetic-mutation-of-syndecan-4-binds-and-inhibits-tiam1-modulating-rac1-activity-in-pdz-interaction-dependent-manner
#2
Aniko Keller-Pinter, Bettina Ughy, Monika Domoki, Aladar Pettko-Szandtner, Tamas Letoha, Jozsef Tovari, Jozsef Timar, Laszlo Szilak
The small GTPases of the Rho family comprising RhoA, Rac1 and Cdc42 function as molecular switches controlling several essential biochemical pathways in eukaryotic cells. Their activity is cycling between an active GTP-bound and an inactive GDP-bound conformation. The exchange of GDP to GTP is catalyzed by guanine nucleotide exchange factors (GEFs). Here we report a novel regulatory mechanism of Rac1 activity, which is controlled by a phosphomimetic (Ser179Glu) mutant of syndecan-4 (SDC4). SDC4 is a ubiquitously expressed transmembrane, heparan sulfate proteoglycan...
2017: PloS One
https://www.readbyqxmd.com/read/29118922/il-6-increases-sdcbp-expression-cell-proliferation-and-cell-invasion-by-activating-jak2-stat3-in-human-glioma-cells
#3
Fang Cao, Qiang Zhang, Wei Chen, Chong Han, Yang He, Qishan Ran, Shengtao Yao
Syndecan-binding protein (SDCBP), which is induced by tumor necrosis factor-α and interferon-γ, controls the proliferation and invasion of several different types of cancer cells. Interleukin-6 (IL-6) is known to play an important role in the glioma cell growth and invasion. The present study aimed to investigate the relationship between IL-6 and SDCBP in glioma cells. SDCBP expression was knocked down in two glioma cell lines (T98G and U87) by small interfering RNA (siRNA) transfection. Cell proliferation and invasion were significantly repressed following SDCBP knockdown, and there was a positive correlation between SDCBP and IL-6 expression levels in glioma tissues...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29118673/mir-20a-5p-represses-the-multi-drug-resistance-of-osteosarcoma-by-targeting-the-sdc2-gene
#4
Fangfang Zhao, Youguang Pu, Mingda Cui, Haiyan Wang, Shanbao Cai
Background: As one of the hallmarks of cancer, chemoresistance hinders curative cancer chemotherapy in osteosarcoma (OS). MicroRNAs (miRNAs) act as key regulators of gene expression in diverse biological processes including the multi-chemoresistance of cancers. Methods: Based on the CCK8 experiments, we performed an RNA-seq-based miR-omic analysis of osteosarcoma (OS) cells (a multi-chemosensitive OS cell line G-292 and a multi-chemoresistant OS cell line SJSA-1) to detect the levels of miR-20a-5p...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/29109268/syntenin-mediates-src-function-in-exosomal-cell-to-cell-communication
#5
Naga Sailaja Imjeti, Kerstin Menck, Antonio Luis Egea-Jimenez, Celine Lecointre, Frederique Lembo, Habib Bouguenina, Ali Badache, Rania Ghossoub, Guido David, Serge Roche, Pascale Zimmermann
The cytoplasmic tyrosine kinase SRC controls cell growth, proliferation, adhesion, and motility. The current view is that SRC acts primarily downstream of cell-surface receptors to control intracellular signaling cascades. Here we reveal that SRC functions in cell-to-cell communication by controlling the biogenesis and the activity of exosomes. Exosomes are viral-like particles from endosomal origin that can reprogram recipient cells. By gain- and loss-of-function studies, we establish that SRC stimulates the secretion of exosomes having promigratory activity on endothelial cells and that syntenin is mandatory for SRC exosomal function...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29101181/endothelial-dysfunction-is-a-super-inducer-of-syndecan-4-fibrogenic-role-of-its-ectodomain
#6
Mark Lipphardt, Jong W Song, Brian B Ratliff, Hassan Dihazi, Gerhard A Müller, Michael S Goligorsky
Syndecan 4 (Synd4) is a member of membrane-spanning, glycocalyx-forming proteoglycan family. It has been suggested that Synd4 participates in renal fibrosis. We compared wild type and fibrosis-prone endothelial sirtuin1-deficient (Sirt1(endo)-/-) mice, the latter being a model of global endothelial dysfunction. We performed mass-spectrometry analysis, which revealed that Synd4 was highly enriched in the secretome of renal microvascular endothelial cells (RMVEC) obtained from Sirt1(endo)-/- mice upon stimulation with TGFβ1; notably all detectable peptides were confined to the ectodomain of Synd4...
November 3, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29089873/exploiting-heparan-sulfate-proteoglycans-in-human-neurogenesis-controlling-lineage-specification-and-fate
#7
REVIEW
Chieh Yu, Lyn R Griffiths, Larisa M Haupt
Unspecialized, self-renewing stem cells have extraordinary application to regenerative medicine due to their multilineage differentiation potential. Stem cell therapies through replenishing damaged or lost cells in the injured area is an attractive treatment of brain trauma and neurodegenerative neurological disorders. Several stem cell types have neurogenic potential including neural stem cells (NSCs), embryonic stem cells (ESCs), induced pluripotent stem cells (iPSCs), and mesenchymal stem cells (MSCs). Currently, effective use of these cells is limited by our lack of understanding and ability to direct lineage commitment and differentiation of neural lineages...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/29089645/identification-and-characterization-of-hla-a24-specific-xbp1-cd138-syndecan-1-and-cs1-slamf7-peptides-inducing-antigens-specific-memory-cytotoxic-t-lymphocytes-targeting-multiple-myeloma
#8
J Bae, T Hideshima, G L Zhang, J Zhou, D B Keskin, N C Munshi, K C Anderson
XBP1 (X-box binding protein 1), CD138 (Syndecan-1), and CS1 (SLAMF7) are highly expressed antigens in cancers including multiple myeloma (MM). Here we identify and characterize immunogenic HLA-A24 peptides derived from these antigens for potential vaccination therapy of HLA-A24+ patients with MM. The identified immunogenic HLA-A24-specific XBP1 unspliced (UN)185-193 (I S P W I L A V L), XBP1 spliced (SP)223-231 (V Y P E G P S S L), CD138265-273 (I F A V C L V G F) and CS1240-248 (L F V L G L F L W) peptides induced antigen-specific CTL with anti-MM activity in an HLA-A24 restricted manner...
November 1, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29058634/three-dimensional-ultrastructure-of-capillary-endothelial-glycocalyx-under-normal-and-experimental-endotoxemic-conditions
#9
Hideshi Okada, Genzou Takemura, Kodai Suzuki, Kazumasa Oda, Chihiro Takada, Yasuaki Hotta, Nagisa Miyazaki, Akiko Tsujimoto, Isamu Muraki, Yoshiaki Ando, Ryogen Zaikokuji, Atsumu Matsumoto, Hiroki Kitagaki, Yuto Tamaoki, Takahiro Usui, Tomoaki Doi, Takahiro Yoshida, Shozo Yoshida, Hiroaki Ushikoshi, Izumi Toyoda, Shinji Ogura
BACKGROUND: Sugar-protein glycocalyx coats healthy endothelium, but its ultrastructure is not well described. Our aim was to determine the three-dimensional ultrastructure of capillary endothelial glycocalyx in the heart, kidney, and liver, where capillaries are, respectively, continuous, fenestrated, and sinusoidal. METHODS: Tissue samples were processed with lanthanum-containing alkaline fixative, which preserves the structure of glycocalyx. RESULTS: Scanning and transmission electron microscopy revealed that the endothelial glycocalyx layer in continuous and fenestrated capillaries was substantially thicker than in sinusoids...
October 23, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29049135/early-identification-of-the-patient-with-endotheliopathy-of-trauma-by-arrival-serum-albumin
#10
Erika Gonzalez Rodriguez, Jessica C Cardenas, Ernesto Lopez, Bryan A Cotton, Jeffrey S Tomasek, Sisse R Ostrowski, Lisa A Baer, Jakob Stensballe, John B Holcomb, Pär I Johansson, Charles E Wade
OBJECTIVE: Traumatic endotheliopathy (EoT) is associated with glycocalyx breakdown and capillary leak resulting in the extravasation of proteins. We hypothesized that lower serum albumin levels are associated with EoT, poor outcomes, and can be used for early EoT screening in trauma patients. METHODS: We enrolled severely injured trauma patients with serum albumin levels available on admission. Syndecan-1 and soluble thrombomodulin were quantified from plasma by ELISA...
October 18, 2017: Shock
https://www.readbyqxmd.com/read/29042251/effects-of-heparan-sulfate-proteoglycan-syndecan-4-on-the-insulin-secretory-response-in-a-mouse-pancreatic-%C3%AE-cell-line-min6
#11
Iwao Takahashi, Shuhei Yamada, Koji Nata
Heparan sulfate proteoglycans (HSPGs) comprise a core protein to which extracellular glycosaminoglycan chains are attached. Syndecan-4, one of the major HS-containing core proteins, is distributed on the cell surface, where they interact with various protein ligands and regulate a wide range of biological activities. Here, we propose that the core protein of HSPGs is involved in the insulin secretory response. To investigate the participation of HSPGs in the insulin-secretion mechanism, MIN6 cells, a mouse pancreatic β-cell line, were subcloned...
October 16, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29040203/the-temporal-response-and-mechanism-of-action-of-tranexamic-acid-in-endothelial-glycocalyx-degradation
#12
Mark E Diebel, Jonathan V Martin, David M Liberati, Lawrence N Diebel
BACKGROUND: The endothelial glycocalyx (GCX) plays an important role in vascular barrier function. Damage to the GCX occurs due to a variety of causes including hypoxia, ischemia-reperfusion, stress related sympathoadrenal activation, and inflammation. Tranexamic acid (TXA) may prevent GCX degradation. The therapeutic window for TXA administration and the mechanism of action has been under review. Membrane-anchored proteases (sheddases) are key components in endothelial cell biology including the regulation of vascular permeability...
October 16, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29038476/pro-angiogenic-effect-of-rantes-loaded-polysaccharide-based-microparticles-for-a-mouse-ischemia-therapy
#13
N Suffee, C Le Visage, H Hlawaty, R Aid-Launais, V Vanneaux, J Larghero, O Haddad, O Oudar, N Charnaux, A Sutton
Peripheral arterial disease results from the chronic obstruction of arteries leading to critical hindlimb ischemia. The aim was to develop a new therapeutic strategy of revascularization by using biodegradable and biocompatible polysaccharides-based microparticles (MP) to treat the mouse hindlimb ischemia. For this purpose, we deliver the pro-angiogenic chemokine Regulated upon Activation, Normal T-cell Expressed and Secreted (RANTES)/CCL5 in the mouse ischemic hindlimb, in solution or incorporated into polysaccharide-based microparticles...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29024378/the-cyclocalyx-study-ovulatory-cycle-affects-circulating-compartments-of-the-endothelial-glycocalyx-in-blood
#14
Nikolai Hulde, Nina Rogenhofer, Florian Brettner, Nicole C Eckert, Isabella Götzfried, Thu Nguyen, Judith-I Pagel, Tobias Kammerer, Klaus F Hofmann-Kiefer, Gustav Schelling, Andreas Dendorfer, Markus Rehm, Christian J Thaler
PROBLEM: The endothelial glycocalyx (EGX) plays an important role in vascular integrity. Recently, increased levels of EGX components were detected in the circulating blood of healthy pregnant women and were related to the increased tendency to edema formation during gestation. However, the EGX has not yet been systematically studied in non-pregnant women during ovulatory cycles. METHOD OF STUDY: Serum levels of EGX components syndecan-1, heparan sulfate, and hyaluronan in healthy women (n = 16) at 3 phases of the ovulatory cycle (early follicular phase, at ovulation, and mid-luteal phase) were compared with a control group of healthy men (n = 10)...
October 11, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29023362/glycocalyx-shedding-is-enhanced-by-age-and-correlates-with-increased-fluid-requirement-in-patients-with-major-burns
#15
Akinori Osuka, Hirofumi Kusuki, Kazuhiro Yoneda, Hiroshi Matsuura, Hisatake Matsumoto, Hiroshi Ogura, Masashi Ueyama
BACKGROUND: Massive fluid shift following severe burn injury leads to edema and intravascular fluid loss that may result in burn-induced compartment syndrome (BICS) when corrected by aggressive fluid resuscitation. Factors causing this fluid shift remain unclear. Because glycocalyx regulates endothelial permeability, we hypothesized that glycocalyx shedding would increase fluid requirements in burn patients. This prospective cohort study aimed to identify relationships between shedding of the glycocalyx and fluid requirements following burn injury...
October 11, 2017: Shock
https://www.readbyqxmd.com/read/29017031/angiopoietin-like-4-is-a-wnt-signaling-antagonist-that-promotes-lrp6-turnover
#16
Nadine Kirsch, Ling-Shih Chang, Stefan Koch, Andrey Glinka, Christine Dolde, Gabriele Colozza, Maria D J Benitez, Edward M De Robertis, Christof Niehrs
Angiopoietin-like 4 (ANGPTL4) is a secreted signaling protein that is implicated in cardiovascular disease, metabolic disorder, and cancer. Outside of its role in lipid metabolism, ANGPTL4 signaling remains poorly understood. Here, we identify ANGPTL4 as a Wnt signaling antagonist that binds to syndecans and forms a ternary complex with the Wnt co-receptor Lipoprotein receptor-related protein 6 (LRP6). This protein complex is internalized via clathrin-mediated endocytosis and degraded in lysosomes, leading to attenuation of Wnt/β-catenin signaling...
October 9, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29016732/regulation-of-vascular-smooth-muscle-cell-calcification-by-syndecan-4-fgf-2-pkc%C3%AE-signalling-and-cross-talk-with-tgf%C3%AE
#17
Samantha J Borland, Thomas G Morris, Shona C Borland, Mark R Morgan, Sheila E Francis, Catherine L R Merry, Ann E Canfield
Aims: Vascular calcification is a major cause of morbidity and mortality. Fibroblast growth factor-2 (FGF-2) plays an instructive role in osteogenesis and bone development, but its role in vascular calcification was unknown. Therefore, we investigated the involvement of FGF-2 in vascular calcification and determined the mechanism by which it regulates this process. Methods and results: We demonstrate that FGF-2 expression is increased in vascular smooth muscle cells (VSMCs) induced to deposit a mineralized matrix by incubation with β-glycerophosphate...
November 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28993096/altered-expression-of-malat1-lncrna-in-nonalcoholic-steatohepatitis-fibrosis-regulates-cxcl5-in-hepatic-stellate-cells
#18
Fatjon Leti, Christophe Legendre, Christopher D Still, Xin Chu, Anthony Petrick, Glenn S Gerhard, Johanna K DiStefano
In the present study, we sought to identify long noncoding RNA (lncRNA) expression profiles in nonalcoholic steatohepatitis (NASH) patients with histologic evidence of lobular inflammation and advanced fibrosis. We profiled lncRNA expression using RNA-sequencing of wedge liver biopsies from 24 nonalcoholic fatty liver disease (NAFLD) patients with normal liver histology, 53 NAFLD patients with lobular inflammation, and 65 NAFLD patients with advanced fibrosis. Transcript profiling identified 4432 and 4057 differentially expressed lncRNAs in comparisons of normal tissue with lobular inflammation and fibrosis samples, respectively...
September 19, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28986821/endothelial-glycocalyx-degradation-is-more-severe-in-patients-with-non-pulmonary-sepsis-compared-to-pulmonary-sepsis-and-associates-with-risk-of-ards-and-other-organ-dysfunction
#19
Laura S Murphy, Nancy Wickersham, J Brennan McNeil, Ciara M Shaver, Addison K May, Julie A Bastarache, Lorraine B Ware
BACKGROUND: Disruption of the endothelial glycocalyx contributes to acute lung injury in experimental sepsis but has not been well studied in humans. To study glycocalyx degradation in sepsis-induced ARDS, we measured plasma levels of syndecan-1, a marker for glycocalyx degradation. METHODS: The present study is a retrospective observational study of 262 ventilated medical ICU patients at risk of ARDS due to severe sepsis and APACHE II ≥ 25. Plasma syndecan-1 was measured at study enrollment...
October 6, 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28982834/how-biomarkers-reflect-the-prognosis-and-treatment-of-necrotising-soft-tissue-infections-and-the-effects-of-hyperbaric-oxygen-therapy-the-protocol-of-the-prospective-cohort-protreat-study-conducted-at-a-tertiary-hospital-in-copenhagen-denmark
#20
Peter Polzik, Pär I Johansson, Ole Hyldegaard
INTRODUCTION: Not enough is known regarding the prognosis and treatment of necrotising soft tissue infections (NSTIs). Mortality has been shown to be 25%-35%, with survivors coping with amputations and prolonged rehabilitation. This study will evaluate soluble urokinase-type plasminogen activator receptor (suPAR) as a possible prognostic marker of NSTI severity and mortality, as well as whether hyperbaric oxygen therapy (HBOT) can modulate markers of endothelial damage during NSTI. We hypothesise that in patients with NSTI, suPAR can provide prognostic risk assessment on hospital admission and that HBOT can reduce the endothelial damage that these patients are exposed to...
October 5, 2017: BMJ Open
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