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Tenascin C

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https://www.readbyqxmd.com/read/29136112/local-production-of-tenascin-c-acts-as-a-trigger-for-monocyte-macrophage-recruitment-that-provokes-cardiac-dysfunction
#1
Dounia Abbadi, Fanny Laroumanie, Mathilde Bizou, Joffrey Pozzo, Danièle Daviaud, Christine Delage, Denis Calise, Fréderique Gaits-Iacovoni, Marianne Dutaur, Florence Tortosa, Edith Renaud-Gabardos, Victorine Douin-Echinard, Anne-Catherine Prats, Jerome Roncalli, Angelo Parini, Nathalie Pizzinat
Aims: Tenascin-C (TNC) is an endogenous danger signal molecule strongly associated with inflammatory diseases and with poor outcome in patients with cardiomyopathies. Its function within pathological cardiac tissue during pressure overload remains poorly understood. Methods and results: We showed that TNC accumulates after 1 week of transverse aortic constriction (TAC) in the heart of 12-week-old male mice. By cross bone marrow transplantation experiments, we determined that TNC deposition relied on cardiac cells and not on haematopoietic cells...
November 10, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29117120/increased-serum-levels-of-fetal-tenascin-c-variants-in-patients-with-pulmonary-hypertension-novel-biomarkers-reflecting-vascular-remodeling-and-right-ventricular-dysfunction
#2
Ilonka Rohm, Katja Grün, Linda Marleen Müller, Daniel Kretzschmar, Michael Fritzenwanger, Atilla Yilmaz, Alexander Lauten, Christian Jung, P Christian Schulze, Alexander Berndt, Marcus Franz
Pulmonary vascular remodeling is a pathophysiological feature that common to all classes of pulmonary hypertension (PH) and right ventricular dysfunction, which is the major prognosis-limiting factor. Vascular, as well as cardiac tissue remodeling are associated with a re-expression of fetal variants of cellular adhesion proteins, including tenascin-C (Tn-C). We analyzed circulating levels of the fetal Tn-C splicing variants B⁺ and C⁺ Tn-C in serum of PH patients to evaluate their potential as novel biomarkers reflecting vascular remodeling and right ventricular dysfunction...
November 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29115019/cell-laden-composite-suture-threads-for-repairing-damaged-tendons
#3
Raquel Costa-Almeida, Rui M A Domingues, Afsoon Fallahi, Huseyin Avci, Iman K Yazdi, Mohsen Akbari, Rui L Reis, Ali Tamayol, Manuela E Gomes, Ali Khademhosseini
Tendons have limited regenerative capacity due to their low cellularity and hypovascular nature, which results in poor clinical outcomes of presently used therapies. As tendon injuries are often observed in active adults, it poses an increasing socio-economic burden on healthcare systems. Currently, suture threads are used during surgical repair to anchor the tissue graft or to connect injured ends. Here, we created composite suture threads coated with a layer of cell-laden hydrogel that can be used for bridging the injured tissue aiming at tendon regeneration...
November 8, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29109681/tenascins-in-retinal-and-optic-nerve-neurodegeneration
#4
REVIEW
Jacqueline Reinhard, Lars Roll, Andreas Faissner
Tenascins represent key constituents of the extracellular matrix (ECM) with major impact on central nervous system (CNS) development. In this regard, several studies indicate that they play a crucial role in axonal growth and guidance, synaptogenesis and boundary formation. These functions are not only important during development, but also for regeneration under several pathological conditions. Additionally, tenascin-C (Tnc) represents a key modulator of the immune system and inflammatory processes. In the present review article, we focus on the function of Tnc and tenascin-R (Tnr) in the diseased CNS, specifically after retinal and optic nerve damage and degeneration...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/29084415/association-of-distinct-fine-specificities-of-anti-citrullinated-peptide-antibodies-with-elevated-immune-responses-to-prevotella-intermedia-in-a-subgroup-of-patients-with-rheumatoid-arthritis-and-periodontitis
#5
Anja Schwenzer, Anne-Marie Quirke, Anna M Marzeda, Alicia Wong, Anna B Montgomery, Harlan R Sayles, Sigrun Eick, Katarzyna Gawron, Maria Chomyszyn-Gajewska, Katarzyna Łazarz-Bartyzel, Simon Davis, Jan Potempa, Benedikt M Kessler, Roman Fischer, Patrick J Venables, Jeffrey B Payne, Ted R Mikuls, Kim S Midwood
OBJECTIVE: In addition to the long-established link with smoking, periodontitis (PD) is a risk factor for rheumatoid arthritis (RA). This study was undertaken to elucidate the mechanism by which PD could induce antibodies to citrullinated peptides (ACPAs), by examining the antibody response to a novel citrullinated peptide of cytokeratin 13 (CK-13) identified in gingival crevicular fluid (GCF), and comparing the response to 4 other citrullinated peptides in patients with RA who were well-characterized for PD and smoking...
October 30, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29074845/connexin-43-hemichannels-regulate-the-expression-of-wound-healing-associated-genes-in-human-gingival-fibroblasts
#6
Rana Tarzemany, Guoqiao Jiang, Jean X Jiang, Hannu Larjava, Lari Häkkinen
Connexin 43 (Cx43) is the most ubiquitous connexin in various cells, and presents as hemichannels (HCs) and gap junctions (GJs) on the cell membrane. We have recently shown that Cx43 abundance was strongly reduced in fibroblasts of human gingival wounds, and blocking Cx43 function in cultured human gingival fibroblasts (GFBLs) strongly regulated the expression of wound healing-related genes. However, it is not known whether these responses involved Cx43 HCs or GJs. Here we show that Cx43 assembled into distinct GJ and HC plaques in GFBLs both in vivo and in vitro...
October 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29065889/injury-induced-expression-of-caveolar-proteins-in-human-kidney-tubules-role-of-megakaryoblastic-leukemia-1
#7
Krzysztof M Krawczyk, Jennifer Hansson, Helén Nilsson, Katarzyna K Krawczyk, Karl Swärd, Martin E Johansson
BACKGROUND: Caveolae are membrane invaginations measuring 50-100 nm. These organelles, composed of caveolin and cavin proteins, are important for cellular signaling and survival. Caveolae play incompletely defined roles in human kidneys. Induction of caveolin-1/CAV1 in diseased tubules has been described previously, but the responsible mechanism remains to be defined. METHODS: Healthy and atrophying human kidneys were stained for caveolar proteins, (caveolin 1-3 and cavin 1-4) and examined by electron microscopy...
October 24, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/29065446/the-roles-of-matricellular-proteins-in-oncogenic-virus-induced-cancers-and-their-potential-utilities-as-therapeutic-targets
#8
REVIEW
Naoyoshi Maeda, Katsumi Maenaka
Matricellular proteins differ from other classical extracellular matrix proteins; for instance, they are transiently expressed as soluble proteins rather than being constitutively expressed in pathological conditions, such as acute viral infections. Accumulating studies have revealed that matricellular proteins, including osteopontin and tenascin-C, both of which interact with integrin heterodimers, are involved in inflammatory diseases, autoimmune disorders, and cancers. The concentrations of these matricellular proteins are elevated in the plasma of patients with certain types of cancers, indicating that they play important roles in oncogenesis...
October 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29065427/tenascin-c-in-colorectal-cancer-stroma-is-a-predictive-marker-for-liver-metastasis-and-is-a-potent-target-of-mir-198-as-identified-by-microrna-analysis
#9
Tomohiro Murakami, Hirotoshi Kikuchi, Hisato Ishimatsu, Ichirota Iino, Amane Hirotsu, Tomohiro Matsumoto, Yusuke Ozaki, Toshiki Kawabata, Yoshihiro Hiramatsu, Manabu Ohta, Kinji Kamiya, Mayu Fukushima, Satoshi Baba, Kyoko Kitagawa, Masatoshi Kitagawa, Hiroyuki Konno
BACKGROUND: Tumour stroma has important roles in the development of colorectal cancer (CRC) metastasis. We aimed to clarify the roles of microRNAs (miRNAs) and their target genes in CRC stroma in the development of liver metastasis. METHODS: Tumour stroma was isolated from formalin-fixed, paraffin-embedded tissues of primary CRCs with or without liver metastasis by laser capture microdissection, and miRNA expression was analysed using TaqMan miRNA arrays. RESULTS: Hierarchical clustering classified 16 CRCs into two groups according to the existence of synchronous liver metastasis...
October 24, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29062592/toll-like-receptor-4-signaling-drives-persistent-fibroblast-activation-and-prevents-fibrosis-resolution-in-scleroderma
#10
REVIEW
Swati Bhattacharyya, Kim S Midwood, Hang Yin, John Varga
Significance: This review provides current overview of the emerging role of innate immunity in driving fibrosis, and preventing its resolution, in scleroderma (systemic sclerosis, SSc). Understanding the mechanisms of dysregulated innate immunity in fibrosis and SSc will provide opportunities for therapeutic interventions using novel agents and repurposed existing drugs. Recent Advances: New insights from genomic and genetic studies implicate components of innate immune signaling such as pattern recognition receptors (PRRs), downstream signaling intermediates, and endogenous inhibitors, in fibrosis in SSc...
October 1, 2017: Advances in Wound Care
https://www.readbyqxmd.com/read/29054607/repigmentation-of-human-vitiligo-skin-by-nbuvb-is-controlled-by-transcription-of-gli1-and-activation-of-%C3%AE-catenin-pathway-in-the-hair-follicle-bulge-stem-cells
#11
Nathaniel B Goldstein, Maranke I Koster, Kenneth L Jones, Bifeng Gao, Laura G Hoaglin, Steven E Robinson, Michael J Wright, Smaranda I Birlea, Abigail Luman, Karoline A Lambert, Yiqun G Shellman, Mayumi Fujita, William A Robinson, Dennis R Roop, David A Norris, Stanca A Birlea
Vitiligo repigmentation is a complex process in which the melanocyte-depleted interfollicular epidermis (IE) is repopulated by melanocyte precursors from hair follicle (HF) bulge that proliferate, migrate, and differentiate into mature melanocytes on their way to the epidermis. The strongest stimulus for vitiligo repigmentation is narrow band UVB (NBUVB), but how the HF melanocyte precursors are activated by UV light has not been extensively studied. To better understand this process, we developed an application that combined laser capture microdissection and subsequent whole transcriptome RNA sequencing of HF bulge melanocyte precursors, and compared their gene signature to that of regenerated mature epidermal melanocytes from the NBUVB-treated vitiligo skin...
October 17, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29038247/constitutive-activation-of-integrin-%C3%AE-9-augments-self-directed-hyperplastic-and-proinflammatory-properties-of-fibroblast-like-synoviocytes-of-rheumatoid-arthritis
#12
Takashi Emori, Jun Hirose, Kotoko Ise, Jun-Ichiro Yomoda, Michiko Kasahara, Tadanobu Shinkuma, Hiroyuki Yoshitomi, Hiromu Ito, Motomu Hashimoto, Shingo Sugahara, Hirotada Fujita, Nobuchika Yamamoto, Yoshiaki Morita, Shuh Narumiya, Ichiro Aramori
Despite advances in the treatment of rheumatoid arthritis (RA), currently approved medications can have significant side effects due to their direct immunosuppressive activities. Additionally, current therapies do not address residual synovial inflammation. In this study, we evaluated the role of integrin α9 and its ligand, tenascin-C (Tn-C), on the proliferative and inflammatory response of fibroblast-like synoviocytes (FLSs) from RA patients grown in three-dimensional (3D)-micromass culture. FLSs from osteoarthritis patients, when grown in the 3D-culture system, formed self-directed lining-like structures, whereas FLSs from RA tissues (RA-FLSs) developed an abnormal structure of condensed cellular accumulation reflective of the pathogenic features of RA synovial tissues...
October 16, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29037195/comparison-between-xcelligence-biosensor-technology-and-conventional-cell-culture-system-for-real-time-monitoring-human-tenocytes-proliferation-and-drugs-cytotoxicity-screening
#13
Chih-Hao Chiu, Kin Fong Lei, Wen-Ling Yeh, Poyu Chen, Yi-Sheng Chan, Kuo-Yao Hsu, Alvin Chao-Yu Chen
BACKGROUND: Local injections of anesthetics, NSAIDs, and corticosteroids for tendinopathies are empirically used. They are believed to have some cytotoxicity toward tenocytes. The maximal efficacy dosages of local injections should be determined. A commercial 2D microfluidic xCELLigence system had been developed to detect real-time cellular proliferation and their responses to different stimuli and had been used in several biomedical applications. The purpose of this study is to determine if human tenocytes can successfully proliferate inside xCELLigence system and the result has high correlation with conventional cell culture methods in the same condition...
October 16, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29027523/-role-of-tenascin-%C3%B0-in-triple-negative-breast-cancer
#14
O P Popova, S Yu Bogomazova, A A Ivanov
AIM: to establish a relationship between the main markers tumor stem cells (TSCs), CD44, and CD24, the level of tenascin C production, and chemoresistance in triple-negative breast cancer (BC). SUBJECTS AND METHODS: Thirty biopsy specimens from triple-negative BC patients who had conventionally received preoperative chemotherapy followed by surgery were selected in the investigation. All the selected patients were conventionally assigned to neoadjuvant polychemotherapy (PCT) with paclitaxel and carboplatin...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/29027377/contribution-of-extracellular-matrix-and-signal-mechanotransduction-to-epithelial-cell-damage-in-inflammatory-bowel-disease-patients-a-proteomic-study
#15
Manuela Moriggi, Luca Pastorelli, Enrica Torretta, Gian Eugenio Tontini, Daniele Capitanio, Stefano Ferrero Bogetto, Maurizio Vecchi, Cecilia Gelfi
This study utilized 2D-DIGE, isotope-coded protein labelling (ICPL) and biochemical assays to characterize protein alteration in Ulcerative Colitis (UC) and Crohn's Disease (CD) in human epithelial cell and mucosal biopsies in Inflammatory Bowel Disease (IBD)-affected patients. The aim of this study is to identify the key molecular signatures involved in epithelial cell structure of IBDs. In non-inflamed UC (QUC) keratins, vimentin and FAK increased, whereas vinculin and de-tyrosinated α-tubulin decreased; inflammation (IUC) exacerbated molecular changes, being COL6A1, tenascin-C and vimentin increased...
October 13, 2017: Proteomics
https://www.readbyqxmd.com/read/28986537/counterbalancing-anti-adhesive-effects-of-tenascin-c-through-fibronectin-expression-in-endothelial-cells
#16
Agata Radwanska, Dominique Grall, Sébastien Schaub, Stéphanie Beghelli-de la Forest Divonne, Delphine Ciais, Samah Rekima, Tristan Rupp, Anne Sudaka, Gertraud Orend, Ellen Van Obberghen-Schilling
Cellular fibronectin (FN) and tenascin-C (TNC) are prominent development- and disease-associated matrix components with pro- and anti-adhesive activity, respectively. Whereas both are present in the tumour vasculature, their functional interplay on vascular endothelial cells remains unclear. We have previously shown that basally-oriented deposition of a FN matrix restricts motility and promotes junctional stability in cultured endothelial cells and that this effect is tightly coupled to expression of FN. Here we report that TNC induces FN expression in endothelial cells...
October 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28978001/tenascin-c-and-fibronectin-in-normal-esophageal-mucosa-barrett-s-esophagus-dysplasia-and-adenocarcinoma
#17
Joni Leppänen, Sara Bogdanoff, Petri P Lehenkari, Juha Saarnio, Joonas H Kauppila, Tuomo J Karttunen, Heikki Huhta, Olli Helminen
BACKGROUND: Tenascin-C and fibronectin are adhesive glycoproteins modulating the structure of the extracellular matrix and cellular functions. Their expression and function in esophageal adenocarcinoma is poorly known. The aim of this study was to evaluate the expression of tenascin-C and fibronectin in esophageal adenocarcinoma and its precursor stages. RESULTS: Stromal tenascin-C and fibronectin expression were found in all evaluated lesion types. Expression of both molecules increased from gastric metaplasia towards adenocarcinoma (p<0...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28976491/genetic-variants-and-hamstring-injury-in-soccer-an-association-and-validation-study
#18
Jon Larruskain, David Celorrio, Irantzu Barrio, Adrian Odriozola, Susana M Gil, Juan Ramon Fernandez-Lopez, Raul Nozal, Isusko Ortuzar, Jose A Lekue, Jose M Aznar
PURPOSE: To investigate the association of candidate single nucleotide polymorphisms (SNPs) with non-contact hamstring muscle injuries in elite soccer players, and to create and validate a model to assess the risk of hamstring injury. METHODS: 107 elite male outfield players were prospectively followed for 6 seasons. Players were genotyped for 37 SNPs previously investigated in relation to musculoskeletal injuries. The association of SNPs, previous injury, age, level of play, position and anthropometric data with 129 hamstring injuries (413 observations) was investigated in the discovery phase (2010-2015), and a multivariable Cox-frailty model was created using forward selection...
October 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28975544/the-role-of-%C3%AE-9%C3%AE-1-integrin-and-its-ligands-in-the-development-of-autoimmune-diseases
#19
Shigeyuki Kon, Toshimitsu Uede
Adhesion of cells to extracellular matrix proteins through integrins expressed on the cell surface is important for cell adhesion/motility, survival, and differentiation. Recently, α9β1 integrin was reported to be important for the development of autoimmune diseases including rheumatoid arthritis, multiple sclerosis, and their murine models. In addition, ligands for α9β1 integrin, such as osteopontin and tenascin-C, are well established as key regulators of autoimmune diseases. Therefore, this review focused on the role of interactions between α9β1 integrin and its ligands in the development of autoimmune diseases...
October 3, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28964818/endogenous-ligands-of-tlr4-promote-unresolving-tissue-fibrosis-implications-for-systemic-sclerosis-and-its-targeted-therapy
#20
REVIEW
Swati Bhattacharyya, John Varga
Fibrosis, the hallmark of scleroderma or systemic sclerosis (SSc), is a complex, dynamic and generally irreversible pathophysiological process that leads to tissue disruption, and lacks effective therapy. While early-stage fibrosis resembles normal wound healing, in SSc fibrosis fails to resolve. Innate immune signaling via toll-like receptors (TLRs) has recently emerged as a key driver of persistent fibrotic response in SSc. Recurrent injury in genetically predisposed individual causes generation of "damage-associated molecular patterns" (DAMPs) such as fibronectin-EDA and tenascin-C...
September 28, 2017: Immunology Letters
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