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Matrix Biology: Journal of the International Society for Matrix Biology

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https://www.readbyqxmd.com/read/28232112/hyaluronan-modulates-growth-factor-induced-mammary-gland-branching-in-a-size-dependent-manner
#1
Cornelia Tolg, Han Yuan, Sarah M Flynn, Kaustuv Basu, Jenny Ma, Kenneth Chor Kin Tse, Beatrice Kowalska, Diana Vulkanesku, Mary K Cowman, James B McCarthy, Eva A Turley
Mammary gland morphogenesis begins during fetal development but expansion of the mammary tree occurs postnatally in response to hormones, growth factors and extracellular matrix. Hyaluronan (HA) is an extracellular matrix polysaccharide that has been shown to modulate growth factor-induced branching in culture. Neither the physiological relevance of HA to mammary gland morphogenesis nor the role that HA receptors play in these responses are currently well understood. We show that HA synthase (HAS2) is expressed in both ductal epithelia and stromal cells but HA primarily accumulates in the stroma...
February 20, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28215822/structural-and-functional-analysis-of-two-small-leucine-rich-repeat-proteoglycans-fibromodulin-and-chondroadherin
#2
Patricia Paracuellos, Sebastian Kalamajski, Arkadiusz Bonna, Dominique Bihan, Richard W Farndale, Erhard Hohenester
The small leucine-rich proteoglycans (SLRPs) are important regulators of extracellular matrix assembly and cell signalling. We have determined crystal structures at ~2.2Å resolution of human fibromodulin and chondroadherin, two collagen-binding SLRPs. Their overall fold is similar to that of the prototypical SLRP, decorin, but unlike decorin neither fibromodulin nor chondroadherin forms a stable dimer. A previously identified binding site for integrin α2β1 maps to an α-helix in the C-terminal cap region of chondroadherin...
February 17, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28192200/the-binding-capacity-of-%C3%AE-1%C3%AE-1-%C3%AE-2%C3%AE-1-and-%C3%AE-10%C3%AE-1-integrins-depends-on-non-collagenous-surface-macromolecules-rather-than-the-collagens-in-cartilage-fibrils
#3
Christian Woltersdorf, Melanie Bonk, Birgit Leitinger, Mikko Huhtala, Jarmo Käpylä, Jyrki Heino, Christian Gil Girol, Stephan Niland, Johannes A Eble, Peter Bruckner, Rita Dreier, Uwe Hansen
Interactions of cells with supramolecular aggregates of the extracellular matrix (ECM) are mediated, in part, by cell surface receptors of the integrin family. These are important molecular components of cell surface-suprastructures regulating cellular activities in general. A subfamily of β1-integrins with von Willebrand-factor A-like domains (I-domains) in their α-chains can bind to collagen molecules and, therefore, are considered as important cellular mechano-receptors. Here we show that chondrocytes strongly bind to cartilage collagens in the form of individual triple helical molecules but very weakly to fibrils formed by the same molecules...
February 10, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28126522/stromal-microenvironment-in-type-vii-collagen-deficient-skin-the-ground-for-squamous-cell-carcinoma-development
#4
REVIEW
Liliana Guerra, Teresa Odorisio, Giovanna Zambruno, Daniele Castiglia
Recessive dystrophic epidermolysis bullosa (RDEB) is a skin fragility disease caused by mutations that affect the function and/or the amount of type VII collagen (C7), the major component of anchoring fibrils. Hallmarks of RDEB are unremitting blistering and chronic wounds leading to tissue fibrosis and scarring. Nearly all patients with severe RDEB develop highly metastatic squamous cell carcinomas (SCC) which are the main cause of death. Accumulating evidence from a murine RDEB model and human RDEB cells demonstrates that lack of C7 also directly alters the wound healing process...
January 23, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28126521/hs3st1-genotype-regulates-antithrombin-s-inflammomodulatory-tone-and-associates-with-atherosclerosis
#5
Nicole C Smits, Takashi Kobayashi, Pratyaksh K Srivastava, Sladjana Skopelja, Julianne A Ivy, Dustin J Elwood, Radu V Stan, Gregory J Tsongalis, Frank W Sellke, Peter L Gross, Michael D Cole, James T DeVries, Aaron V Kaplan, John F Robb, Scott M Williams, Nicholas W Shworak
The HS3ST1 gene controls endothelial cell production of HS(AT+) - a form of heparan sulfate containing a specific pentasaccharide motif that binds the anticoagulant protein antithrombin (AT). HS(AT+) has long been thought to act as an endogenous anticoagulant; however, coagulation was normal in Hs3st1(-/-) mice that have greatly reduced HS(AT+) (HajMohammadi et al., 2003). This finding indicates that HS(AT+) is not essential for AT's anticoagulant activity. To determine if HS(AT+) is involved in AT's poorly understood inflammomodulatory activities, Hs3st1(-/-) and Hs3st1(+/+) mice were subjected to a model of acute septic shock...
January 23, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28109697/fibronectin-fibrils-regulate-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transition
#6
Lauren A Griggs, Nadiah T Hassan, Roshni S Malik, Brian P Griffin, Brittany A Martinez, Lynne W Elmore, Christopher A Lemmon
Epithelial-Mesenchymal Transition (EMT) is a dynamic process through which epithelial cells transdifferentiate from an epithelial phenotype into a mesenchymal phenotype. Previous studies have demonstrated that both mechanical signaling and soluble growth factor signaling facilitate this process. One possible point of integration for mechanical and growth factor signaling is the extracellular matrix. Here we investigate the role of the extracellular matrix (ECM) protein fibronectin (FN) in this process. We demonstrate that inhibition of FN fibrillogenesis blocks activation of the Transforming Growth Factor-Beta (TGF-β) signaling pathway via Smad2 signaling, decreases cell migration and ultimately leads to inhibition of EMT...
January 19, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28062282/coupling-of-vinculin-to-f-actin-demands-syndecan-4-proteoglycan
#7
R P Cavalheiro, M A Lima, T R Jarrouge-Bouças, G M Viana, C C Lopes, V J Coulson-Thomas, J L Dreyfuss, E A Yates, I L S Tersariol, H B Nader
Syndecans are heparan sulfate proteoglycans characterized as transmembrane receptors that act cooperatively with the cell surface and extracellular matrix proteins. Syn4 knockdown was performed in order to address its role in endothelial cells (EC) behavior. Normal EC and shRNA-Syn4-EC cells were studied comparatively using complementary confocal, super-resolution and non-linear microscopic techniques. Confocal and super-resolution microscopy revealed that Syn4 knockdown alters the level and arrangement of essential proteins for focal adhesion, evidenced by the decoupling of vinculin from F-actin filaments...
January 3, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28043889/emt-induced-by-egf-and-wounding-activates-hyaluronan-synthesis-machinery-and-ev-shedding-in-rat-primary-mesothelial-cells
#8
Ville Koistinen, Kai Härkönen, Riikka Kärnä, Uma Thanigai Arasu, Sanna Oikari, Kirsi Rilla
The mesothelium is a membrane that forms the lining of several body cavities. It is composed of simple squamous mesothelial cells that secrete a glycosaminoglycan-rich lubricating fluid between inner organs. One of the most abundant glycosaminoglycans of those fluids is hyaluronan, which is synthesized on a plasma membrane and especially on apical filopodia of cultured cells. Our recent study showed that similar hyaluronan-rich protrusions are found in mesothelial lining in vivo, which suggests that hyaluronan synthesis in plasma membrane protrusions is a general process...
December 30, 2016: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28335831/matrix-biology-highlights
#9
(no author information available yet)
No abstract text is available yet for this article.
May 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27425255/stimulatory-effects-of-advanced-glycation-endproducts-ages-on-fibronectin-matrix-assembly
#10
Alexandra K Pastino, Todd M Greco, Rommel A Mathias, Ileana M Cristea, Jean E Schwarzbauer
Advanced glycation endproducts (AGEs) are a heterogeneous group of compounds that form via non-enzymatic glycation of proteins throughout our lifespan and at a higher rate in certain chronic diseases such as diabetes. AGEs contribute to the progression of fibrosis, in part by stimulating cellular pathways that affect gene expression. Long-lived ECM proteins are targets for non-enzymatic glycation but the question of whether the AGE-modified ECM leads to excess ECM accumulation and fibrosis remains unanswered...
May 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28043890/integrin-alpha6-maintains-the-structural-integrity-of-the-kidney-collecting-system
#11
Olga M Viquez, Eugenia M Yazlovitskaya, Tianxiang Tu, Glenda Mernaugh, Pablo Secades, Karen K McKee, Elizabeth Georges-Labouesse, Adele De Arcangelis, Vito Quaranta, Peter Yurchenco, Leslie C Gewin, Arnoud Sonnenberg, Ambra Pozzi, Roy Zent
Laminins are a major constituent of the basement membranes of the kidney collecting system. Integrins, transmembrane receptors formed by non-covalently bound α and β subunits, serve as laminin receptors, but their role in development and homeostasis of the kidney collecting system is poorly defined. Integrin α3β1, one of the major laminin receptors, plays a minor role in kidney collecting system development, while the role of α6 containing integrins (α6β1 and α6β4), the other major laminin receptors, is unknown...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28040522/the-nature-and-biology-of-basement-membranes
#12
REVIEW
Ambra Pozzi, Peter D Yurchenco, Renato V Iozzo
Basement membranes are delicate, nanoscale and pliable sheets of extracellular matrices that often act as linings or partitions in organisms. Previously considered as passive scaffolds segregating polarized cells, such as epithelial or endothelial cells, from the underlying mesenchyme, basement membranes have now reached the center stage of biology. They play a multitude of roles from blood filtration to muscle homeostasis, from storing growth factors and cytokines to controlling angiogenesis and tumor growth, from maintaining skin integrity and neuromuscular structure to affecting adipogenesis and fibrosis...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28025167/force-dependent-breaching-of-the-basement-membrane
#13
REVIEW
Tammy T Chang, Dhruv Thakar, Valerie M Weaver
Clinically, non-invasive carcinomas are confined to the epithelial side of the basement membrane and are classified as benign, whereas invasive cancers invade through the basement membrane and thereby acquire the potential to metastasize. Recent findings suggest that, in addition to protease-mediated degradation and chemotaxis-stimulated migration, basement membrane invasion by malignant cells is significantly influenced by the stiffness of the associated interstitial extracellular matrix and the contractility of the tumor cells that is dictated in part by their oncogenic genotype...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27964993/laminin-is-instructive-and-calmodulin-dependent-kinase-ii-is-non-permissive-for-the-formation-of-complex-aggregates-of-acetylcholine-receptors-on-myotubes-in-culture
#14
Raphael Vezina-Audette, Mathieu Tremblay, Salvatore Carbonetto
Previous work has shown that myotubes cultured on laminin-coated substrates form complex aggregates of synaptic proteins that are similar in shape and composition to neuromuscular junctions (NMJs). Here we show that laminin instructs the location of complex aggregates which form only on the lower surface when laminin is coated onto culture dishes but over the entire cell when laminin is added in solution. Silencing of myotubes by agents that block electrical activity (tetrodotoxin, verapamil) or by inhibitors of calmodulin dependent kinase (CaMKII) render the myotube permissive for the formation of complex aggregates...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27915093/discoidin-domain-receptor-1-kinase-activity-is-required-for-regulating-collagen-iv-synthesis
#15
Corina M Borza, Yan Su, Truc-Linh Tran, Ling Yu, Nick Steyns, Kayla J Temple, Marcin J Skwark, Jens Meiler, Craig W Lindsley, Brennan R Hicks, Birgit Leitinger, Roy Zent, Ambra Pozzi
Discoidin domain receptor 1 (DDR1) is a receptor tyrosine kinase that binds to and is activated by collagens. DDR1 expression increases following kidney injury and accumulating evidence suggests that it contributes to the progression of injury. To this end, deletion of DDR1 is beneficial in ameliorating kidney injury induced by angiotensin infusion, unilateral ureteral obstruction, or nephrotoxic nephritis. Most of the beneficial effects observed in the DDR1-null mice are attributed to reduced inflammatory cell infiltration to the site of injury, suggesting that DDR1 plays a pro-inflammatory effect...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27794444/genotype-phenotype-correlations-in-pathology-caused-by-collagen-type-iv-alpha-1-and-2-mutations
#16
REVIEW
Marion Jeanne, Douglas B Gould
COL4A1 and COL4A2 are extracellular matrix proteins that form heterotrimers and are present in nearly all basement membranes in every organ. In the past decade, COL4A1 and COL4A2 mutations have been identified to cause a multi-system disorder for which penetrance and severity of constituent phenotypes can greatly vary. Here, we compare the outcomes of more than 100 mutations identified in patients and data from a murine allelic series to explore the presence of genotype-phenotype correlations - many of which are shared among other types of collagen...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27746220/collagen-xviii-in-tissue-homeostasis-and-dysregulation-lessons-learned-from-model-organisms-and-human-patients
#17
REVIEW
Ritva Heljasvaara, Mari Aikio, Heli Ruotsalainen, Taina Pihlajaniemi
Collagen XVIII is a ubiquitous basement membrane (BM) proteoglycan produced in three tissue-specific isoforms that differ in their N-terminal non-collagenous sequences, but share collagenous and C-terminal non-collagenous domains. The collagenous domain provides flexibility to the large collagen XVIII molecules on account of multiple interruptions in collagenous sequences. Each isoform has a complex multi-domain structure that endows it with an ability to perform various biological functions. The long isoform contains a frizzled-like (Fz) domain with Wnt-inhibiting activity and a unique domain of unknown function (DUF959), which is also present in the medium isoform...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27619726/embryo-implantation-triggers-dynamic-spatiotemporal-expression-of-the-basement-membrane-toolkit-during-uterine-reprogramming
#18
Celestial R Jones-Paris, Sayan Paria, Taloa Berg, Juan Saus, Gautam Bhave, Bibhash C Paria, Billy G Hudson
Basement membranes (BMs) are specialized extracellular scaffolds that influence behaviors of cells in epithelial, endothelial, muscle, nervous, and fat tissues. Throughout development and in response to injury or disease, BMs are fine-tuned with specific protein compositions, ultrastructure, and localization. These features are modulated through implements of the BM toolkit that is comprised of collagen IV, laminin, perlecan, and nidogen. Two additional proteins, peroxidasin and Goodpasture antigen-binding protein (GPBP), have recently emerged as potential members of the toolkit...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27614294/the-role-of-laminins-in-the-organization-and-function-of-neuromuscular-junctions
#19
REVIEW
Robert S Rogers, Hiroshi Nishimune
The synapse between motor neurons and skeletal muscle is known as the neuromuscular junction (NMJ). Proper alignment of presynaptic and post-synaptic structures of motor neurons and muscle fibers, respectively, is essential for efficient motor control of skeletal muscles. The synaptic cleft between these two cells is filled with basal lamina. Laminins are heterotrimer extracellular matrix molecules that are key members of the basal lamina. Laminin α4, α5, and β2 chains specifically localize to NMJs, and these laminin isoforms play a critical role in maintenance of NMJs and organization of synaptic vesicle release sites known as active zones...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27613501/a-current-view-of-perlecan-in-physiology-and-pathology-a-mosaic-of-functions
#20
REVIEW
Maria A Gubbiotti, Thomas Neill, Renato V Iozzo
Perlecan, a large basement membrane heparan sulfate proteoglycan, is expressed in a wide array of tissues where it regulates diverse cellular processes including bone formation, inflammation, cardiac development, and angiogenesis. Here we provide a contemporary review germane to the biology of perlecan encompassing its genetic regulation as well as an analysis of its modular protein structure as it pertains to function. As perlecan signaling from the extracellular matrix converges on master regulators of autophagy, including AMPK and mTOR, via a specific interaction with vascular endothelial growth factor receptor 2, we specifically focus on the mechanism of action of perlecan in autophagy and angiogenesis and contrast the role of endorepellin, the C-terminal fragment of perlecan, in these cellular and morphogenic events...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
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