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Biglycan

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https://www.readbyqxmd.com/read/29777767/biglycan-is-a-new-high-affinity-ligand-for-cd14-in-macrophages
#1
Heiko Roedig, Madalina V Nastase, Helena Frey, Kristin Moreth, Jinyang Zeng-Brouwers, Chiara Poluzzi, Louise Tzung-Harn Hsieh, Christian Brandts, Simone Fulda, Malgorzata Wygrecka, Liliana Schaefer
Sterile inflammation is a therapeutic target in many diseases where it represents an important initiator of disease progression. However, the detailed mechanisms underlying its evolution and biological relevance are not yet completely elucidated. Biglycan, a prototype extracellular matrix-derived damage-associated molecular pattern, mediates sterile inflammation in macrophages through Toll-like receptor (TLR) 2 and/or TLR4-dependent signaling pathways. Here we discovered that soluble biglycan is a novel high-affinity ligand for CD14, a well-known GPI-anchored co-receptor for TLRs...
May 16, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29761248/biglycan-promotes-the-chemotherapy-resistance-of-colon-cancer-by-activating-nf-%C3%AE%C2%BAb-signal-transduction
#2
Bin Liu, Tonghong Xu, Xinning Xu, Yuzhu Cui, Xiaojing Xing
Biglycan (BGN) is overexpressed in cancer stem cells of colon cancer and induces the activation of NF-κB pathway which contributes to the chemotherapy resistance of diverse cancer types. Therefore, we hypothesized that the overexpression of BGN also promoted the development of multiple drug resistance (MDR) in colon cancer via NF-κB pathway. The expression of BGN was bilaterally modulated in colon cancer cell lines HT-29 and SW-480 and the effect of treatments on the cell proliferation and resistance to 5-FU was assessed...
May 14, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29752552/collagen-vi-is-required-for-the-structural-and-functional-integrity-of-the-neuromuscular-junction
#3
Matilde Cescon, Ilaria Gregorio, Nane Eiber, Doriana Borgia, Aurora Fusto, Patrizia Sabatelli, Michele Scorzeto, Aram Megighian, Elena Pegoraro, Said Hashemolhosseini, Paolo Bonaldo
The synaptic cleft of the neuromuscular junction (NMJ) consists of a highly specialized extracellular matrix (ECM) involved in synapse maturation, in the juxtaposition of pre- to post-synaptic areas, and in ensuring proper synaptic transmission. Key components of synaptic ECM, such as collagen IV, perlecan and biglycan, are binding partners of one of the most abundant ECM protein of skeletal muscle, collagen VI (ColVI), previously never linked to NMJ. Here, we demonstrate that ColVI is itself a component of this specialized ECM and that it is required for the structural and functional integrity of NMJs...
May 11, 2018: Acta Neuropathologica
https://www.readbyqxmd.com/read/29728612/identification-of-the-effector-domain-of-biglycan-that-facilitates-bmp-2-osteogenic-function
#4
Prapaporn Jongwattanapisan, Masahiko Terajima, Patricia A Miguez, William Querido, Hideaki Nagaoka, Noriko Sumida, Elizabeth Grace Gurysh, Kristy M Ainslie, Nancy Pleshko, Lalith Perera, Mitsuo Yamauchi
We have reported that recombinant biglycan (BGN) core protein accelerates bone formation in vivo by enhancing bone morphogenetic protein (BMP)-2 function. The purpose of the present study was to identify the specific domain ("effector") within the BGN core protein that facilitates BMP-2 osteogenic function. Thus, we generated various recombinant and synthetic peptides corresponding to several domains of BGN, and tested their effects on BMP-2 functions in vitro. The results demonstrated that the leucine-rich repeats 2-3 domain (LRR2-3) of BGN significantly enhanced the BMP-2 induced Smad1/5/9 phosphorylation, osteogenic gene expression, and alkaline phosphatase activity in myogenic C2C12 cells...
May 4, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29728109/a-serological-biomarker-of-versican-degradation-is-associated-with-mortality-following-acute-exacerbations-of-idiopathic-interstitial-pneumonia
#5
Jannie M B Sand, Yoshinori Tanino, Morten A Karsdal, Takefumi Nikaido, Kenichi Misa, Yuki Sato, Ryuichi Togawa, Xintao Wang, Diana J Leeming, Mitsuru Munakata
BACKGROUND: Idiopathic interstitial pneumonia (IIP) is characterized by an increased rate of extracellular matrix (ECM) remodeling resulting in fibrosis. Acute exacerbations of IIP represent periods of increased disease activity, thus we hypothesized that ECM remodeling was altered during acute exacerbations and investigated this by serological neo-epitope biomarkers. METHODS: Patients who were sequentially admitted to the hospital with acute exacerbations of IIP were retrospectively analyzed for ECM remodeling at time of exacerbation (AE-IIP) and at clinical stability (S-IIP)...
May 4, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29663371/distribution-of-extracellular-matrix-molecules-in-human-uterine-tubes-during-the-menstrual-cycle-a-histological-and-immunohistochemical-analysis
#6
Carlos Godoy-Guzmán, Claudio Nuñez, Pedro Orihuela, Antonio Campos, Víctor Carriel
The uterine tube (UT) is an important and complex organ of the women's reproductive system. In general, the anatomy and basic histology of this organ are well-known. However, the composition and function of the extracellular matrix (ECM) of the UT is still poorly understood. The ECM is a complex supramolecular material produced by cells which is commonly restricted to the basement membrane and interstitial spaces. ECM molecules play not only a structural role, they are also important for cell growth, survival and differentiation in all tissues...
April 16, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29618652/the-metalloproteinase-proteoglycans-adamts7-and-adamts12-provide-an-innate-tendon-specific-protective-mechanism-against-heterotopic-ossification
#7
Timothy J Mead, Daniel R McCulloch, Jason C Ho, Yaoyao Du, Sheila M Adams, David E Birk, Suneel S Apte
Heterotopic ossification (HO) is a significant clinical problem with incompletely resolved mechanisms. Here, the secreted metalloproteinases ADAMTS7 and ADAMTS12 are shown to comprise a unique proteoglycan class that protects against a tendency toward HO in mouse hindlimb tendons, menisci, and ligaments. Adamts7 and Adamts12 mRNAs were sparsely expressed in murine forelimbs but strongly coexpressed in hindlimb tendons, skeletal muscle, ligaments, and meniscal fibrocartilage. Adamts7-/- Adamts12-/- mice, but not corresponding single-gene mutants, which demonstrated compensatory upregulation of the intact homolog mRNA, developed progressive HO in these tissues after 4 months of age...
April 5, 2018: JCI Insight
https://www.readbyqxmd.com/read/29615735/attraction-and-compaction-of-migratory-breast-cancer-cells-by-bone-matrix-proteins-through-tumor-osteocyte-interactions
#8
Andy Chen, Luqi Wang, Shengzhi Liu, Yue Wang, Yunlong Liu, Mu Wang, Harikrishna Nakshatri, Bai-Yan Li, Hiroki Yokota
Bone is a frequent site of metastasis from breast cancer. To understand the potential role of osteocytes in bone metastasis, we investigated tumor-osteocyte interactions using two cell lines derived from the MDA-MB-231 breast cancer cells, primary breast cancer cells, and MLO-A5/MLO-Y4 osteocyte cells. When three-dimensional (3D) tumor spheroids were grown with osteocyte spheroids, tumor spheroids fused with osteocyte spheroids and shrank. This size reduction was also observed when tumor spheroids were exposed to conditioned medium isolated from osteocyte cells...
April 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29581460/loss-of-stemness-emt-and-supernumerary-tooth-formation-in-cebpb-runx2-murine-incisors
#9
Kazuyuki Saito, Katsu Takahashi, Boyen Huang, Masakazu Asahara, Honoka Kiso, Yumiko Togo, Hiroko Tsukamoto, Sayaka Mishima, Masaki Nagata, Machiko Iida, Yoshihito Tokita, Masato Asai, Akira Shimizu, Toshihisa Komori, Hidemitsu Harada, Mary MacDougall, Manabu Sugai, Kazuhisa Bessho
Adult Cebpb KO mice incisors present amelogenin-positive epithelium pearls, enamel and dentin allopathic hyperplasia, fewer Sox2-positive cells in labial cervical loop epitheliums, and reduced Sox2 expression in enamel epithelial stem cells. Thus, Cebpb acts upstream of Sox2 to regulate stemness. In this study, Cebpb KO mice demonstrated cementum-like hard tissue in dental pulp, loss of polarity by ameloblasts, enamel matrix in ameloblastic layer, and increased expression of epithelial-mesenchymal transition (EMT) markers in a Cebpb knockdown mouse enamel epithelial stem cell line...
March 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29561836/impaired-proteoglycan-glycosylation-elevated-tgf-%C3%AE-signaling-and-abnormal-osteoblast-differentiation-as-the-basis-for-bone-fragility-in-a-mouse-model-for-gerodermia-osteodysplastica
#10
Wing Lee Chan, Magdalena Steiner, Tomasz Witkos, Johannes Egerer, Björn Busse, Shuji Mizumoto, Jan M Pestka, Haikuo Zhang, Ingrid Hausser, Layal Abo Khayal, Claus-Eric Ott, Mateusz Kolanczyk, Bettina Willie, Thorsten Schinke, Chiara Paganini, Antonio Rossi, Kazuyuki Sugahara, Michael Amling, Petra Knaus, Danny Chan, Martin Lowe, Stefan Mundlos, Uwe Kornak
Gerodermia osteodysplastica (GO) is characterized by skin laxity and early-onset osteoporosis. GORAB, the responsible disease gene, encodes a small Golgi protein of poorly characterized function. To circumvent neonatal lethality of the GorabNull full knockout, Gorab was conditionally inactivated in mesenchymal progenitor cells (Prx1-cre), pre-osteoblasts (Runx2-cre), and late osteoblasts/osteocytes (Dmp1-cre), respectively. While in all three lines a reduction in trabecular bone density was evident, only GorabPrx1 and GorabRunx2 mutants showed dramatically thinned, porous cortical bone and spontaneous fractures...
March 21, 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29547593/interleukin-6-promotes-proliferation-but-inhibits-tenogenic-differentiation-via-the-janus-kinase-signal-transducers-and-activators-of-transcription-3-jak-stat3-pathway-in-tendon-derived-stem-cells
#11
Siwei Chen, Ganming Deng, Kaiqun Li, Haonan Zheng, Gang Wang, Bin Yu, Kairui Zhang
BACKGROUND Previous studies demonstrated that tendon-derived stem cells (TDSCs) were vital healing cells and that mRNA expression of anti-inflammatory cytokine IL-6 was significantly upregulated in injured tendons. The aim of the present study was to investigate the effects of IL-6 on the TDSCs in vitro. MATERIAL AND METHODS TDSCs isolated from the Achilles tendons in SD rats were co-cultured with various concentrations of IL-6. Cell proliferation, cell cycle analysis, quantitative real-time PCR, western blotting analysis, and statistical analysis were used in the study...
March 16, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29502190/biomolecular-analysis-of-matrix-proteoglycans-as-biomarkers-in-non-small-cell-lung-cancer
#12
Maristela P Rangel, Vanessa K de Sá, Tabatha Prieto, João Roberto M Martins, Eloísa R Olivieri, Dirce Carraro, Teresa Takagaki, Vera Luiza Capelozzi
Matrix proteoglycans (PGs) have shown promise as biomarker in malignancies. We employed agarose gel eletrophoresis, quantitative real- time reverse transcription-polymerase chain reaction and immunohistochemistry to evaluate the content of sulfated glicosaminoglycans (chondroitin sulfate and heparan sulfate) and expression of PG (biglycan, glypican, perlecan, syndecan e versican) in patient-matched normal and tumor tissues obtained from resected specimens of lung cancer. A significant increase of heparan sulfate (HS) and chondroitin sulfate (CS) concentrations was found in tumor tissue samples when compared to normal lung tissue samples...
April 2018: Glycoconjugate Journal
https://www.readbyqxmd.com/read/29499356/a-role-for-proteoglycans-in-vascular-disease
#13
REVIEW
Thomas N Wight
The content of proteoglycans (PGs) is low in the extracellular matrix (ECM) of vascular tissue, but increases dramatically in all phases of vascular disease. Early studies demonstrated that glycosaminoglycans (GAGs) including chondroitin sulfate (CS), dermatan sulfate (DS), keratan sulfate (KS) and heparan sulfate (HS) accumulate in vascular lesions in both humans and in animal models in areas of the vasculature that are susceptible to disease initiation (such as at branch points) and are frequently coincident with lipid deposits...
February 27, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29481844/non-glycanated-biglycan-and-ltbp4-leveraging-the-extracellular-matrix-for-duchenne-muscular-dystrophy-therapeutics
#14
REVIEW
Justin R Fallon, Elizabeth M McNally
The extracellular matrix (ECM) plays key roles in normal and diseased skeletal and cardiac muscle. In healthy muscle the ECM is essential for transmitting contractile force, maintaining myofiber integrity and orchestrating cellular signaling. Duchenne Muscular Dystrophy (DMD) is caused by loss of dystrophin, a cytosolic protein that anchors a transmembrane complex and serves as a vital link between the actin cytoskeleton and the basal lamina. Loss of dystrophin leads to membrane fragility and impaired signaling, resulting in myofiber death and cycles of inflammation and regeneration...
February 23, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29475025/protein-anchoring-therapy-to-target-extracellular-matrix-proteins-to-their-physiological-destinations
#15
REVIEW
Mikako Ito, Kinji Ohno
Endplate acetylcholinesterase (AChE) deficiency is a form of congenital myasthenic syndrome (CMS) caused by mutations in COLQ, which encodes collagen Q (ColQ). ColQ is an extracellular matrix (ECM) protein that anchors AChE to the synaptic basal lamina. Biglycan, encoded by BGN, is another ECM protein that binds to the dystrophin-associated protein complex (DAPC) on skeletal muscle, which links the actin cytoskeleton and ECM proteins to stabilize the sarcolemma during repeated muscle contractions. Upregulation of biglycan stabilizes the DPAC...
February 20, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29438988/flavopiridol-inhibits-tgf-%C3%AE-stimulated-biglycan-synthesis-by-blocking-linker-region-phosphorylation-and-nuclear-translocation-of-smad2
#16
Muhamad A Rostam, Aravindra Shajimoon, Danielle Kamato, Partha Mitra, Terrence J Piva, Robel Getachew, Yingnan Cao, Wenhua Zheng, Narin Osman, Peter J Little
Transforming growth factor- β (TGF- β ) is a pleiotropic growth factor implicated in the development of atherosclerosis for its role in mediating glycosaminoglycan (GAG) chain hyperelongation on the proteoglycan biglycan, a phenomenon that increases the binding of atherogenic lipoproteins in the vessel wall. Phosphorylation of the transcription factor Smad has emerged as a critical step in the signaling pathways that control the synthesis of biglycan, both the core protein and the GAG chains. We have used flavopiridol, a well-known cyclin-dependent kinase inhibitor, to study the role of linker region phosphorylation in the TGF- β -stimulated synthesis of biglycan...
April 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29407476/forensic-proteomics-for-the-evaluation-of-the-post-mortem-decay-in-bones
#17
Noemi Procopio, Anna Williams, Andrew T Chamberlain, Michael Buckley
Current methods for evaluation the of post-mortem interval (PMI) of skeletal remains suffer from poor accuracy due to the great number of variables that affect the diagenetic process and to the lack of specific guidelines to address this issue. During decomposition, proteins can undergo cumulative decay over the time, resulting in a decrease in the range and abundance of proteins present (i.e., the proteome) in different tissues as well as in an increase of post-translational modifications occurring in these proteins...
April 15, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29405371/disclosing-the-physiology-of-pulp-tissue-for-vital-pulp-therapy
#18
REVIEW
W L O da Rosa, E Piva, A F da Silva
The discovery that dentine is a reservoir of bioactive molecules that can be recruited on demand has attracted efforts to develop new protocols and materials for vital pulp therapy (VPT). The noncollagenous proteins (NCPs) present in the dentine extracellular matrix (ECM) include growth factors (TGF-β1, BMP-7, FGF-2, IGF-1 and IGF-2, NGF and GDNF), extracellular matrix molecules (DSP, DPP, BSP, DMP-1 and DSPP) and both anti-inflammatory and pro-inflammatory chemokines and cytokines (TNF-α, IL-1, IL-6 and IL-10)...
February 6, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29402456/identification-of-prolargin-expression-in-articular-cartilage-and-its-significance-in-rheumatoid-arthritis-pathology
#19
Vinod Soman Pillai, Rameshwari R Kundargi, Fabia Edathadathil, Sreepriya Nair, Jai Thilak, Roshini Anney Mathew, Tessy Xavier, Padmanabha Shenoy, Krishnakumar N Menon
Qualitative 2D gel-electrophoresis (2DE) protein profiling for osteoarthritis (OA) and rheumatoid arthritis (RA) is challenging because of selective protein loss due to discrepancies in protein precipitation methodologies. Thus, we aimed at developing qualitative protein representation from OA/RA articular cartilage without protein precipitation towards identification of clinically relevant proteins. Chondroitinase digested human articular cartilages from RA patients were subjected to protein extraction using guanidinium hydrochloride (GuHCl) or 8 M urea with 10 or 2% ASB-14-4 or 0...
April 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29364757/a-force-on-the-crown-and-tug-of-war-in-the-periodontal-complex
#20
A T Jang, L Chen, A R Shimotake, W Landis, V Altoe, S Aloni, M Ryder, S P Ho
The load-bearing dentoalveolar fibrous joint is composed of biomechanically active periodontal ligament (PDL), bone, cementum, and the synergistic entheses of PDL-bone and PDL-cementum. Physiologic and pathologic loads on the dentoalveolar fibrous joint prompt natural shifts in strain gradients within mineralized and fibrous tissues and trigger a cascade of biochemical events within the widened and narrowed sites of the periodontal complex. This review highlights data from in situ biomechanical simulations that provide tooth movements relative to the alveolar socket...
March 2018: Journal of Dental Research
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