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https://www.readbyqxmd.com/read/28800110/response-of-dermal-fibroblasts-to-biochemical-and-physical-cues-in-aligned-polycaprolactone-silk-fibroin-nanofiber-scaffolds-for-application-in-tendon-tissue-engineering
#1
Chih-Hao Chen, Shih-Hsien Chen, Chang-Yi Kuo, Meng-Lun Li, Jyh-Ping Chen
Silk fibroin (SF) and fiber alignment were introduced into polycaprolactone (PCL)-based electrospun nanofibers as chemical and physical cues for tendon tissue engineering applications. The physicochemical properties of random PCL (RP) nanofibers, random PCL/SF (RPSF) nanofibers and aligned PCL/SF (APSF) nanofibers were characterized for fiber orientation and SF blending effects. An in vitro cell culture with rabbit dermal fibroblasts (RDFBs) on nanofibers indicated that SF promotes cell proliferation to a higher extent than fiber alignment...
August 11, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28766166/rhpdgf-bb-combined-with-adscs-in-the-treatment-of-achilles-tendinitis-via-mir-363-pi3%C3%A2-k-akt-pathway
#2
Qiao-Jie Chen, Liang Chen, Shao-Kun Wu, Yao-Jun Wu, Qing-Jiang Pang
To investigate the mechanism of recombinant human platelet-derived growth factor-BB (rhPDGF-BB) and human adipose-derived stem cells (hADSCs) in the treatment of Achilles tendinitis. Biomechanical indices of stiffness, stress, and maximum load-to-failure were detected by biomechanical test. mRNA and protein levels of miR-363, p-PI3K/AKT, tendon-related genes Collagen I, Scleraxis (Scx), and Tenascin C (TNC) were measured by qRT-PCR and western blot. The proliferation of hADSCs was accessed by MTT assay. Biomechanical indices of stiffness, stress, and maximum load-to-failure, and mRNA and protein levels of tendon-related genes could be improved by rhPDGF-BB or hADSCs alone, and could be further improved by rhPDGF-BB + hADSCs...
August 1, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28753740/photopolymerized-micropatterns-with-high-feature-frequencies-overcome-chemorepulsive-borders-to-direct-neurite-growth
#3
Bradley W Tuft, Linjing Xu, Braden Leigh, Daniel Lee, C Allan Guymon, Marlan R Hansen
Developing and regenerating neurites respond to a variety of biophysical and biochemical cues in their microenvironment to reach target cells and establish appropriate synapses. Defining the hierarchal relationship of both types of cues to direct neurite growth carries broad significance for neural development, regeneration, and, in particular, engineering of neural prostheses that improve tissue integration with native neural networks. In this work, chemorepulsive biochemical borders are established on substrates with a range of surface microfeatures to determine the potential of physical cues to overcome conflicting biochemical cues...
July 28, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28752190/postlactational-involution-biomarkers-plasminogen-and-phospho-stat3-are-linked-with-active-age-related-lobular-involution
#4
Melody L Stallings-Mann, Ethan P Heinzen, Robert A Vierkant, Stacey J Winham, Tanya L Hoskin, Lori A Denison, Aziza Nassar, Lynn C Hartmann, Daniel W Visscher, Marlene H Frost, Mark E Sherman, Amy C Degnim, Derek C Radisky
PURPOSE: Breast terminal duct lobular units undergo two distinctive physiological processes of involution: age-related lobular involution (LI), which is gradual and associated with decreased breast cancer risk, and postlactational involution, which is relatively precipitous, occurs with weaning, and has been associated with potentiation of tumor aggressiveness in animal models. Here we assessed whether markers of postlactational involution are associated with ongoing LI in a retrospective tissue cohort...
July 27, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28747552/tenascin-c-and-fibronectin-in-normal-esophageal-mucosa-barrett-s-esophagus-dysplasia-and-adenocarcinoma
#5
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...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28747334/pedf-expression-affects-retinal-endothelial-cell-pro-angiogenic-properties-through-alterations-in-cell-adhesive-mechanisms
#6
Juliana Falero-Perez, SunYoung Park, Christine M Sorenson, Nader Sheibani
Pigment epithelium derived factor (PEDF) is an endogenous inhibitor of angiogenesis. Although various ocular cell types including retinal endothelial cells (EC) produce PEDF, we know very little about cell autonomous effects of PEDF in these cell types. Here we determined how PEDF expression affects retinal EC proangiogenic properties. Retinal EC were prepared from wild type (PEDF+/+) and PEDF-deficient (PEDF-/-) mice. The identity of EC was confirmed by staining for specific markers including VE-cadherin, CD31, and B4-lectin...
July 26, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28745050/fibronectin-conformation-and-assembly-analysis-of-fibronectin-deletion-mutants-and-fibronectin-glomerulopathy-gfnd-mutants
#7
Tomoo Ohashi, Christopher A Lemmon, Harold P Erickson
To study fibronectin (FN) conformation and assembly, we generated several deletion mutants: FNΔ(I)1-5, FNΔ(III)1-3, FNΔ(III)4-8, and FNΔ(III)11-14. A monomeric form, FNmono, which lacked the C-terminal dimerization region, was also created. FNtnA-D was generated by swapping FNIII domains 1-8 in FNΔ(III)11-14 with seven FNIII domains from tenascin-C. The conformations of these mutants were analyzed by glycerol gradient sedimentation under low-salt (20 mM NaCl) and high-salt (200 mM NaCl) conditions. Surprisingly, most of the mutants showed a compact conformation under low-salt conditions, except for FNtnA-D...
August 11, 2017: Biochemistry
https://www.readbyqxmd.com/read/28732652/correlation-of-tenascin-c-concentrations-in-serum-with-outcome-of-traumatic-brain-injury-in-humans
#8
Yuan-Yuan Zhao, Lin Lou, Kai-Chuang Yang, Hai-Bo Wang, Yan Xu, Gang Lu, Hai-Yan He
BACKGROUND: Tenascin-C, a matricellular protein, is involved in brain injury. However, change of tenascin-C concentrations in peripheral blood remains unknown after traumatic brain injury (TBI). METHODS: Serum tenascin-C concentrations were measured in 100 healthy controls, 108 severe TBI patients, 79 moderate TBI patients and 32 mild TBI patients. RESULTS: Serum tenascin-C concentrations of patients were significantly higher than those of controls...
July 18, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28731143/suppression-of-hepatic-dysfunction-in-tenascin%C3%A2-x%C3%A2-deficient-mice-fed-a-high%C3%A2-fat-diet
#9
Shinsaku Yamaguchi, Kohei Kawakami, Kazumi Satoh, Naoki Fukunaga, Kazuhito Akama, Ken-Ichi Matsumoto
Extracellular matrix glycoprotein tenascin‑X (TNX) is the largest member of the tenascin family. In the present study, the contribution of TNX to liver dysfunction was investigated by administration of high‑fat and high‑cholesterol diet with high levels of phosphorus and calcium (HFCD) to wild‑type (WT) and TNX‑knockout (KO) mice. After 16 weeks of HFCD administration, the ratio of liver weight to body weight was approximately 22% higher in the HFCD‑fed WT mice compared with the HFCD‑fed TNX‑KO mice, indicating hepatomegaly in HFCD‑fed WT mice...
July 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28723669/multicomponent-analysis-of-the-tumour-microenvironment-reveals-low-cd8-t-cell-number-low-stromal-caveolin-1-and-high-tenascin-c-and-their-combination-as-significant-prognostic-markers-in-non-small-cell-lung-cancer
#10
David Onion, Mark Isherwood, Naveen Shridhar, Mikalena Xenophontos, Madeleine L Craze, Laura J Day, María A García-Márquez, Robert G Pineda, Alexander M Reece-Smith, John H Saunders, John P Duffy, Richard H Argent
The complex interplay of the tumour microenvironment (TME) and its role in disease progression and response to therapy is poorly understood. The majority of studies to date focus on individual components or molecules within the TME and so lack the power correlative analysis. Here we have performed a multi-parameter analysis of the TME in 62 resectable non-small cell lung cancer (NSCLC) specimens detailing number and location of immune infiltrate, assessing markers of cancer-associated fibroblasts, caveolin-1 and tenascin-C, and correlating with clinicopathological details, as well as markers of disease progression such as epithelial-to-mesenchymal transition (EMT)...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28722504/role-of-tenascin-c-in-articular-cartilage
#11
Masahiro Hasegawa, Toshimichi Yoshida, Akihiro Sudo
Tenascin-C (TN-C) is a glycoprotein component of the extracellular matrix (ECM). TN-C consists of four distinct domains, including the tenascin assembly domain, epidermal growth factor-like repeats, fibronectin type III-like repeats, and the fibrinogen-like globe (FBG) domain. This review summarizes the role of TN-C in articular cartilage. Expression of TN-C is associated with the development of articular cartilage but markedly decreases during maturation of chondrocytes and disappears almost completely in adult articular cartilage...
July 19, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28720870/monocyte-adhesion-to-atherosclerotic-matrix-proteins-is-enhanced-by-asn-gly-arg-deamidation
#12
Bamaprasad Dutta, Jung Eun Park, Subodh Kumar, Piliang Hao, Xavier Gallart-Palau, Aida Serra, Yan Ren, Vitaly Sorokin, Chuen Neng Lee, Hee Hwa Ho, Dominique de Kleijn, Siu Kwan Sze
Atherosclerosis arises from leukocyte infiltration and thickening of the artery walls and constitutes a major component of vascular disease pathology, but the molecular events underpinning this process are not fully understood. Proteins containing an Asn-Gly-Arg (NGR) motif readily undergo deamidation of asparagine to generate isoDGR structures that bind to integrin αvβ3 on circulating leukocytes. Here we report the identification of isoDGR motifs in human atherosclerotic plaque components including extracellular matrix (ECM) proteins fibronectin and tenascin C, which have been strongly implicated in human atherosclerosis...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28714032/atf3-promotes-migration-and-m1-m2-polarization-of-macrophages-by-activating-tenascin%C3%A2-c-via-wnt-%C3%AE-%C3%A2-catenin-pathway
#13
Hao Sha, Dianzhong Zhang, Yunfei Zhang, Yanhua Wen, Yucai Wang
There are different polarization states of macrophages, including the classically activated M1 phenotype and the alternatively activated M2 phenotype. These have different functions in the inflammation process. Activating transcription factor 3 (ATF3) is a key transcriptional regulator that inhibits the inflammatory response. However, the effects of ATF3 on migration and anti‑inflammatory control mechanisms of macrophages have not been thoroughly investigated. The present study investigated the effect of ATF3 on macrophage migration and M1/M2 polarization...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28697880/comparison-of-autologous-bone-marrow-and-adipose-tissue-derived-mesenchymal-stem-cells-and-platelet-rich-plasma-for-treating-surgically-induced-lesions-of-the-equine-superficial-digital-flexor-tendon
#14
A Romero, L Barrachina, B Ranera, A R Remacha, B Moreno, I de Blas, A Sanz, F J Vázquez, A Vitoria, C Junquera, P Zaragoza, C Rodellar
Several therapies have been investigated for equine tendinopathies, but satisfactory long term results have not been achieved consistently and a better understanding of the healing mechanism elicited by regenerative therapies is needed. The aim of this study was to assess the separate effects of autologous bone marrow (BM) and adipose tissue (AT) derived mesenchymal stem cells (MSCs), and platelet rich plasma (PRP), for treating lesions induced in the superficial digital flexor tendon (SDFT) of horses. Lesions were created surgically in both SDFTs of the forelimbs of 12 horses and were treated with BM-MSCs (six tendons), AT-MSCs (six tendons) or PRP (six tendons)...
June 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28678913/extracellular-diffusion-quantified-by-magnetic-resonance-imaging-during-rat-c6-glioma-cell-progression
#15
G Song, T Luo, L Dong, Q Liu
Solution reflux and edema hamper the convection-enhanced delivery of the standard treatment for glioma. Therefore, a real-time magnetic resonance imaging (MRI) method was developed to monitor the dosing process, but a quantitative analysis of local diffusion and clearance parameters has not been assessed. The objective of this study was to compare diffusion into the extracellular space (ECS) at different stages of rat C6 gliomas, and analyze the effects of the extracellular matrix (ECM) on the diffusion process...
July 3, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28668501/a-potential-contribution-of-tenascin-x-to-blood-vessel-formation-in-peripheral-nerves
#16
Hiromichi Sakai, Shigefumi Yokota, Naoyo Kajitani, Tsunao Yoneyama, Kohei Kawakami, Yukihiko Yasui, Ken-Ichi Matsumoto
Tenascin-X (TNX), an extracellular matrix protein, is abundantly expressed in peripheral nerves. However, the physiological role of TNX in peripheral nerves remains unknown. In this study, we found that actin levels in sciatic nerves of TNX-deficient mice were markedly decreased. Since actin was highly expressed in endothelial cells in wild-type sciatic nerves, we assessed morphological alterations of blood vessels in TNX-null sciatic nerves. The density of blood vessels was significantly decreased and the size of blood vessels was larger than those in wild-type sciatic nerves...
June 28, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28662401/fibrillin-2-and-tenascin-c-bridge-the-age-gap-in-lung-epithelial-regeneration
#17
Sarah E Gilpin, Qiyao Li, Daniele Evangelista-Leite, Xi Ren, Dieter P Reinhardt, Brian L Frey, Harald C Ott
Organ engineering based on native matrix scaffolds involves combining regenerative cell populations with corresponding biological matrices to form functional grafts on-demand. The extracellular matrix (ECM) that is retained following lung decellularization provides essential structure and biophysical cues for whole organ regeneration after recellularization. The unique ECM composition in the early post-natal lung, during active alveologenesis, may possess distinct signals that aid in driving cell adhesion, survival, and proliferation...
September 2017: Biomaterials
https://www.readbyqxmd.com/read/28662334/protease-cleavable-linkers-modulate-the-anticancer-activity-of-noninternalizing-antibody-drug-conjugates
#18
Alberto Dal Corso, Samuele Cazzamalli, Rémy Gébleux, Martin Mattarella, Dario Neri
Antibody-drug conjugates (ADCs) represent an attractive class of biopharmaceutical agents, with the potential to selectively deliver potent cytotoxic agents to tumors. It is generally assumed that ADC products should preferably bind and internalize into cancer cells in order to liberate their toxic payload, but a growing body of evidence indicates that also ADCs based on noninternalizing antibodies may be potently active. In this Communication, we investigated dipeptide-based linkers (frequently used for internalizing ADC products) in the context of the noninternalizing F16 antibody, specific to a splice isoform of tenascin-C...
July 19, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28652369/quantitative-proteomics-identify-tenascin-c-as-a-promoter-of-lung-cancer-progression-and-contributor-to-a-signature-prognostic-of-patient-survival
#19
Vasilena Gocheva, Alexandra Naba, Arjun Bhutkar, Talia Guardia, Kathryn M Miller, Carman Man-Chung Li, Talya L Dayton, Francisco J Sanchez-Rivera, Caroline Kim-Kiselak, Noor Jailkhani, Monte M Winslow, Amanda Del Rosario, Richard O Hynes, Tyler Jacks
The extracellular microenvironment is an integral component of normal and diseased tissues that is poorly understood owing to its complexity. To investigate the contribution of the microenvironment to lung fibrosis and adenocarcinoma progression, two pathologies characterized by excessive stromal expansion, we used mouse models to characterize the extracellular matrix (ECM) composition of normal lung, fibrotic lung, lung tumors, and metastases. Using quantitative proteomics, we identified and assayed the abundance of 113 ECM proteins, which revealed robust ECM protein signatures unique to fibrosis, primary tumors, or metastases...
July 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28635193/comparing-the-effect-of-cardiac-biomarkers-on-the-outcome-of-normotensive-patients-with-acute-pulmonary-embolism
#20
Yaser Jenab, Marzieh Pourjafari, Maryam Sotoudeh, Masoumeh Lotfi-Tokaldany, Nasrin Etesamifard, Shapour Shirani, Arash Jalali, Younes Nozari, Hamid-Reza Poorhosseini
Acute pulmonary embolism (PE) is a cardiovascular challenge with potentially fatal consequences. This study was designed to observe the association of novel cardiac biomarkers with outcome in this setting. In this prospective study, from 86 patients with a confirmed diagnosis of PE, 59 patients met the inclusion criteria (22 men, 37 women; mean age, 63.36±15.04 y).The plasma concentrations of N-terminal pro-brain natriuretic peptide (NT-proBNP), growth differentiation factor-15 (GDF-15), heart-type fatty acid-binding protein (H-FABP), tenascin-C, and D-dimer were measured at the time of confirmed diagnosis...
May 18, 2017: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
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