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Matrix Biology: Journal of the International Society for Matrix Biology

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https://www.readbyqxmd.com/read/29037761/the-%C3%AE-4%C3%AE-1-emilin1-interaction-discloses-a-novel-and-unique-integrin-ligand-type-of-engagement
#1
Alessandra Capuano, Federico Fogolari, Francesco Bucciotti, Paola Spessotto, Pier Andrea Nicolosi, Maria Teresa Mucignat, Marta Cervi, Gennaro Esposito, Alfonso Colombatti, Roberto Doliana
EMILIN1, a homo-trimeric adhesive ECM glycoprotein, interacts with the α4β1 integrin through its gC1q domain. Uniquely among the C1q family members, the EMILIN1 gC1q presents only nine-stranded β-sandwich fold and the missing strand is substituted by a disordered 19-residue long segment spanning from Y927 to G945 at the apex of the gC1q domain. This unstructured loop exposes to the solvent the acidic residue E933, which plays a key role in the α4β1 integrin mediated interaction. Here, we experimentally determined that the three E933 residues (one from each monomer) are all required for ligand binding...
October 13, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28987865/hyaluronan-synthase-3-promotes-plaque-inflammation-and-atheroprogression
#2
Susanne Homann, Maria Grandoch, Lena S Kiene, Yanina Podsvyadek, Kathrin Feldmann, Berit Rabausch, Nadine Nagy, Stefan Lehr, Inga Kretschmer, Alexander Oberhuber, Paul Bollyky, Jens W Fischer
OBJECTIVE: Hyaluronan (HA) is a prominent component of the provisional extracellular matrix (ECM) present in the neointima of atherosclerotic plaques. Here the role of HA synthase 3 (HAS3) in atheroprogression was studied. APPROACH AND RESULTS: It is demonstrated here that HAS isoenzymes 1, -2 and -3 are expressed in human atherosclerotic plaques of the carotid artery. In Apolipoprotein E (Apoe)-deficient mice Has3 expression is increased early during lesion formation when macrophages enter atherosclerotic plaques...
October 5, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28978412/layilin-is-critical-for-mediating-hyaluronan-35kda-induced-intestinal-epithelial-tight-junction-protein-zo-1-in-vitro-and-in-vivo
#3
Yeojung Kim, Gail A West, Greeshma Ray, Sean P Kessler, Aaron C Petrey, Claudio Fiocchi, Christine McDonald, Michelle S Longworth, Laura E Nagy, Carol A de la Motte
Tight junction proteins are critical in maintaining homeostatic intestinal permeability. Multiple intestinal inflammatory diseases are correlated with reduced expression of tight junction proteins. We have recently reported that oral treatment of mice with Hyaluronan 35kDa (HA35) increases colonic expression of tight junction protein zonula occludens-1 (ZO-1). Here, we investigate whether HA35 treatment enhances ZO-1 expression by direct interaction with intestinal epithelium in vitro and have identified the HA receptor responsible for HA35-mediated ZO-1 induction in colonic epithelium in vitro and in vivo...
October 1, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28965986/deficiency-of-periostin-impairs-liver-regeneration-in-mice-after-partial-hepatectomy
#4
Tiantian Wu, Jingwen Huang, Shasha Wu, Zhengjie Huang, Xiaoyan Chen, Yingfu Liu, Dan Cui, Gang Song, Qi Luo, Fan Liu, Gaoliang Ouyang
Periostin (Postn) is a crucial extracellular remodeling factor that has been implicated in the pathogenesis of hepatic inflammation, fibrosis, non-alcoholic fatty liver disease and liver cancer. However, the role of Postn in liver regeneration remains unclear. Here, we demonstrate that Postn mRNA and protein levels are significantly upregulated in the mice after 2/3 partial hepatectomy (PHx). Compared with wild-type mice, Postn-deficient mice exhibit lower liver/body weight ratio and less Ki67-positive cells at days 2, 8 and 14 after PHx...
September 28, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28958774/osteoglycin-prevents-the-development-of-age-related-diastolic-dysfunction-during-pressure-overload-by-reducing-cardiac-fibrosis-and-inflammation
#5
Sophie Deckx, Ward Heggermont, Paolo Carai, Marieke Rienks, Tom Dresselaers, Uwe Himmelreich, Rick van Leeuwen, Wies Lommen, Jolanda van der Velden, Arantxa Gonzalez, Javier Diez, Anna-Pia Papageorgiou, Stephane Heymans
The small leucine-rich proteoglycan osteoglycin has been implicated in matrix homeostasis in different organs, including the ischemic heart. However, whether osteoglycin modulates cardiac hypertrophy, fibrosis or inflammation in hypertensive heart disease and during aging remains unknown. Angiotensin-II-induced pressure overload increases cardiac osteoglycin expression, concomitant with the onset of inflammation and extracellular matrix deposition. Interestingly aging led to decreased cardiac levels of osteoglycin, yet absence of osteoglycin did not affect organ structure or cardiac function up to the age of 18months...
September 25, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28916201/targeting-heparanase-to-the-mammary-epithelium-enhances-mammary-gland-development-and-promotes-tumor-growth-and-metastasis
#6
Ilanit Boyango, Uri Barash, Liat Fux, Inna Naroditsky, Neta Ilan, Israel Vlodavsky
Heparanase is an endoglucuronidase that uniquely cleaves the heparan sulfate side chains of heparan sulfate proteoglycans. This activity ultimately alters the structural integrity of the ECM and basement membrane that becomes more prone to cellular invasion by metastatic cancer cells and cells of the immune system. In addition, enzymatically inactive heparanase was found to facilitate the proliferation and survival of cancer cells by activation of signaling molecules such as Akt, Src, signal transducer and activation of transcription (Stat), and epidermal growth factor receptor...
September 13, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28912033/dissecting-the-cd93-multimerin-2-interaction-involved-in-cell-adhesion-and-migration-of-the-activated-endothelium
#7
Federico Galvagni, Federica Nardi, Ottavia Spiga, Alfonso Trezza, Giulia Tarticchio, Rosanna Pellicani, Eva Andreuzzi, Elena Caldi, Paolo Toti, Gian Marco Tosi, Annalisa Santucci, Renato V Iozzo, Maurizio Mongiat, Maurizio Orlandini
The glycoprotein CD93 has recently been recognized to play an important role in the regulation of the angiogenic process. Moreover, CD93 is highly expressed in the endothelial cells of tumor blood vessel and faintly expressed in the non-proliferating endothelium. Much evidence suggests that CD93 mediates adhesion in the endothelium. Here we identify Multimerin 2 (MMRN2), a pan-endothelial extracellular matrix protein, as a specific ligand for CD93. We found that CD93 and MMRN2 are co-expressed in the blood vessels of various human tumors...
September 11, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28888912/chemotherapy-induces-secretion-of-exosomes-loaded-with-heparanase-that-degrades-extracellular-matrix-and-impacts-tumor-and-host-cell-behavior
#8
Shyam K Bandari, Anurag Purushothaman, Vishnu C Ramani, Garrett J Brinkley, Darshan S Chandrashekar, Sooryanarayana Varambally, James A Mobley, Yi Zhang, Elizabeth E Brown, Israel Vlodavsky, Ralph D Sanderson
The heparan sulfate-degrading enzyme heparanase promotes the progression of many cancers by driving tumor cell proliferation, metastasis and angiogenesis. Heparanase accomplishes this via multiple mechanisms including its recently described effect on enhancing biogenesis of tumor exosomes. Because we recently discovered that heparanase expression is upregulated in myeloma cells that survive chemotherapy, we were prompted to investigate the impact of anti-myeloma drugs on exosome biogenesis. When myeloma cells were exposed to the commonly utilized anti-myeloma drugs bortezomib, carfilzomib or melphalan, exosome secretion by the cells was dramatically enhanced...
September 6, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28882761/decorin-and-biglycan-are-necessary-for-maintaining-collagen-fibril-structure-fiber-realignment-and-mechanical-properties-of-mature-tendons
#9
Kelsey A Robinson, Mei Sun, Carrie E Barnum, Stephanie N Weiss, Julianne Huegel, Snehal S Shetye, Linda Lin, Daniel Saez, Sheila M Adams, Renato V Iozzo, Louis J Soslowsky, David E Birk
The small leucine-rich proteoglycans (SLRPs), decorin and biglycan, are key regulators of collagen fibril and matrix assembly. The goal of this work was to elucidate the roles of decorin and biglycan in tendon homeostasis. Our central hypothesis is that decorin and biglycan expression in the mature tendon would be critical for the maintenance of the structural and mechanical properties of healthy tendons. Defining the function(s) of these SLRPs in tendon homeostasis requires that effects in the mature tendon be isolated from their influence on development...
September 5, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28801205/recombinant-laminin-fragments-endowed-with-collagen-binding-activity-a-tool-for-conferring-laminin-like-cell-adhesive-activity-to-collagen-matrices
#10
Ryoko Sato-Nishiuchi, Shaoliang Li, Fumi Ebisu, Kiyotoshi Sekiguchi
Laminins are major components of basement membranes that sustain a wide variety of stem cells. Among 15 laminin isoforms, laminin-511 and its E8 fragment (LM511E8) have been shown to strongly promote the adhesion and proliferation of human pluripotent stem cells. The aim of this study was to endow the cell-adhesive activity of laminin-511 on collagen matrices, thereby fabricating collagen-based culture scaffolds for stem cells with defined composition. To achieve this goal, we utilized the collagen-binding domain (CBD) of fibronectin to immobilize LM511E8 on collagen matrices...
August 8, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28797712/estrogen-receptor-beta-as-epigenetic-mediator-of-mir-10b-and-mir-145-in-mammary-cancer
#11
Zoi Piperigkou, Marco Franchi, Martin Götte, Nikos K Karamanos
Even though the role of estrogen receptor alpha (ERα) in the modulation of breast cancer cells' behavior is thoroughly studied, the biological functions of its isoform, ERβ, are less elucidated. The suppression of ERβ in the aggressive ERα-negative MDA-MB-231 breast cancer cells resulted in the inhibition of epithelial to mesenchymal transition (EMT) and major changes in the basic functional properties and expression levels of certain matrix components of breast cancer cells. This arrest in metastatic potential of breast cancer cells suggests the contribution of ERβ in the induction of a more aggressive phenotype in MDA-MB-231 breast cancer cells...
August 8, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28797711/identification-of-a-myofibroblast-specific-expression-signature-in-skin-wounds
#12
Vera Bergmeier, Julia Etich, Lena Pitzler, Christian Frie, Manuel Koch, Matthias Fischer, Gunter Rappl, Hinrich Abken, James J Tomasek, Bent Brachvogel
After skin injury fibroblasts migrate into the wound and transform into contractile, extracellular matrix-producing myofibroblasts to promote skin repair. Persistent activation of myofibroblasts can cause excessive fibrotic reactions, but the underlying mechanisms are not fully understood. We used SMA-GFP transgenic mice to study myofibroblast recruitment and activation in skin wounds. Myofibroblasts were initially recruited to wounds three days post injury, their number reached a maximum after seven days and subsequently declined...
August 7, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28789925/hif-1%C3%AE-represses-the-expression-of-the-angiogenesis-inhibitor-thrombospondin-2
#13
Susan C MacLauchlan, Nicole E Calabro, Yan Huang, Meenakshi Krishna, Tara Bancroft, Tanuj Sharma, Jun Yu, William C Sessa, Frank Giordano, Themis R Kyriakides
Thrombospondin-2 (TSP2) is a potent inhibitor of angiogenesis whose expression is dynamically regulated following injury. In the present study, it is shown that HIF-1α represses TSP2 transcription. Specifically, in vitro studies demonstrate that the prolyl hydroxylase inhibitor DMOG or hypoxia decrease TSP2 expression in fibroblasts. This effect is shown to be via a transcriptional mechanism as hypoxia does not alter TSP2 mRNA stability and this effect requires the TSP2 promoter. In addition, the documented repressive effect of nitric oxide (NO) on TSP2 is shown to be non-canonical and involves stabilization of HIF-1α...
August 5, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28782645/marfan-syndrome-a-connective-tissue-disease-at-the-crossroads-of-mechanotransduction-tgf%C3%AE-signaling-and-cell-stemness
#14
REVIEW
Francesco Ramirez, Cristina Caescu, Elisabeth Wondimu, Josephine Galatioto
Mutations in fibrillin-1 cause Marfan syndrome (MFS), the most common heritable disorder of connective tissue. Fibrillin-1 assemblies (microfibrils and elastic fibers) represent a unique dual-function component of the architectural matrix. The first role is structural for they endow tissues with tensile strength and elasticity, transmit forces across them and demarcate functionally discrete areas within them. The second role is instructive in that these macroaggregates modulate a large variety of sub-cellular processes by interacting with mechanosensors, and integrin and syndecan receptors, and by modulating the bioavailability of local TGFβ signals...
August 4, 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
#15
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...
November 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
#16
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...
November 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27988350/quantitative-proteomics-analysis-of-cartilage-response-to-mechanical-injury-and-cytokine-treatment
#17
Yang Wang, Yang Li, Areej Khabut, Susan Chubinskaya, Alan J Grodzinsky, Patrik Önnerfjord
Mechanical damage at the time of joint injury and the ensuing inflammatory response associated with elevated levels of pro-inflammatory cytokines in the synovial fluid, are reported to contribute to the progression to osteoarthritis after injury. In this exploratory study, we used a targeted proteomics approach to follow the progression of matrix degradation in response to mechanical damage and cytokine treatment of human knee cartilage explants, and thereby to study potential molecular biomarkers. This proteomics approach allowed us to unambiguously identify and quantify multiple peptides and proteins in the cartilage medium and explants upon treatment with ±injurious compression ±cytokines, treatments that mimic the earliest events in post-traumatic OA...
November 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27845198/hyaluronan-35kda-treatment-protects-mice-from-citrobacter-rodentium-infection-and-induces-epithelial-tight-junction-protein-zo-1-in-vivo
#18
Yeojung Kim, Sean P Kessler, Dana R Obery, Craig R Homer, Christine McDonald, Carol A de la Motte
Maintaining a healthy intestinal barrier, the primary physical barrier between intestinal microbiota and the underlying lamina propria, is critical for optimal health. Epithelial integrity is essential for the prevention of the entrance of luminal contents, such as bacteria and their products, through the large intestinal barrier. In this study, we investigated the protective functions of biosynthetic, specific sized, hyaluronan around 35kDa (HA35) on intestinal epithelium in healthy mice, as well as mice infected Citrobacter rodentium, an established model that mimics infection with a serious human pathogen, enteropathogenic E...
October 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27793636/extracellular-matrix-downregulation-in-the-drosophila-heart-preserves-contractile-function-and-improves-lifespan
#19
Ayla O Sessions, Gaurav Kaushik, Sarah Parker, Koen Raedschelders, Rolf Bodmer, Jennifer E Van Eyk, Adam J Engler
Aging is associated with extensive remodeling of the heart, including basement membrane (BM) components that surround cardiomyocytes. Remodeling is thought to impair cardiac mechanotransduction, but the contribution of specific BM components to age-related lateral communication between cardiomyocytes is unclear. Using a genetically tractable, rapidly aging model with sufficient cardiac genetic homology and morphology, e.g. Drosophila melanogaster, we observed differential regulation of BM collagens between laboratory strains, correlating with changes in muscle physiology leading to cardiac dysfunction...
October 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/28739138/the-in-silico-zebrafish-matrisome-a-new-tool-to-study-extracellular-matrix-gene-and-protein-functions
#20
Pauline Nauroy, Sandrine Hughes, Alexandra Naba, Florence Ruggiero
Extracellular matrix (ECM) proteins are major components of most tissues and organs. In addition to their crucial role in tissue cohesion and biomechanics, they chiefly regulate various important biological processes during embryonic development, tissue homeostasis and repair. In essence, ECM proteins were defined as secreted proteins that localized in the extracellular space. The characterization of the human and mouse matrisomes provided the first definition of ECM actors by comprehensively listing ECM proteins and classified them into categories...
July 21, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
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