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https://www.readbyqxmd.com/read/29783706/effect-of-temperature-changes-on-serum-protein-adsorption-on-thermoresponsive-cell-culture-surfaces-monitored-by-a-quartz-crystal-microbalance-with-dissipation
#1
Jun Kobayashi, Yoshinori Arisaka, Nobuhiko Yui, Yoshikatsu Akiyama, Masayuki Yamato, Teruo Okano
Thermoresponsive cell-culture polystyrene (PS) surfaces that are grafted with poly( N -isopropylacrylamide) (PIPAAm) facilitate the cultivation of cells at 37 °C and the detachment of cultured cells as a sheet with an underlying extracellular matrix (ECM) by reducing the temperature. However, the ECM and cell detachment mechanisms are still unclear because the detachment of cells from thermoresponsive surfaces is governed by complex interactions among the cells/ECM/surface. To explore the dynamic behavior of serum protein adsorption/desorption, thermoresponsive surfaces that correspond to thermoresponsive tissue-culture PS dishes were formed on sensor chips for quartz crystal microbalance with dissipation (QCM-D) measurements...
May 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29783208/the-role-of-hydrogen-sulfide-in-the-progression-mechanisms-of-non-alcoholic-steatohepatitis-and-chronic-kidney-disease
#2
Oksana S Khukhlina, Igor V Gerush, Alona A Antoniv, Olha Ye Mandryk, Tamara G Kopchuk, Svitlana P Melnychuk, Zoriana Ia Kotsiubiichuk
OBJECTIVE: Introduction: The steady increase in the incidence of non-alcoholic steatohepatitis (NASH) on the background of obesity and chronic kidney disease (CKD) in people of working age in Ukraine. The aim: To establish the role of hydrogen sulfide in the mechanisms of mutual burden and progression of non-alcoholic steatohepatitis and chronic kidney disease in patients with obesity. PATIENTS AND METHODS: Materials and methods: 114 patients with NASH were examined on the background of obesity of І-ІІ degree, including: 52 patients with NASH (group 1) (without accompanying CKD), 62 patients with NASH with a comorbid CKD І-ІІ degree (group 2)...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29781318/hypochlorite-modified-albumins-promote-cell-death-in-the-tubule-interstitium-in-rats-via-mitochondrial-damage-in-obstructive-nephropathy-and-the-protective-effects-of-antioxidant-peptides
#3
Zong-Rui Liu, Si-Qi Chen, Yao-Wei Zou, Xiao-Yu Wu, Hong-Ying Li, Xiao-Qiao Wang, Yue Shi, Hong-Xin Niu
A major feature of the injury sustained by the kidney during obstructive nephropathy is a profound induction of apoptosis in the tubular epithelium. In this study, we explored the central roles of mitochondria and the mechanism of the protective effect of the mitochondrial targeted peptides in tubular cell apoptosis and interstitial fibrosis during obstructive nephropathy. Unilateral ureter obstruction (UUO) was performed on rats, and the animals were randomly assigned to intravenous treatment with normal saline, rat serum albumin (RSA), or HOCl-rat serum albumin (HOCl-RSA) in the presence or absence of SS-31...
May 2018: Free Radical Research
https://www.readbyqxmd.com/read/29778911/exposure-to-diethylhexyl-phthalate-dehp-and-monoethylhexyl-phthalate-mehp-promotes-the-loss-of-alveolar-epithelial-phenotype-of-a549-cells
#4
L Rafael-Vázquez, García-Trejo Semiramis, O G Aztatzi-Aguilar, B Bazán-Perkins, B Quintanilla-Vega
Di(2-ethylhexyl) phthalate (DEHP) is a widely used plasticizer that is metabolized to mono(2-ethylhexyl) phthalate (MEHP). Inhalation is an important exposure route for both phthalates, and their effects on lungs include inflammation, alteration of postnatal maturation (alveolarization), enlarged airspaces and cell differentiation changes, suggesting that alveolar epithelial cells-2 (AEC) are targets of phthalates. This study evaluated the cell progression, epithelial and mesenchymal markers, including surfactant secretion in A549 cells (AEC) that were exposed to DEHP (1-100 µM) or MEHP (1-50 µM) for 24-72 h...
May 17, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29777959/extracellular-matrix-expression-in-human-pluripotent-stem-cell-derived-retinal-organoids-recapitulates-retinogenesis-in-vivo-and-reveals-an-important-role-for-impg1-and-cd44-in-the-development-of-photoreceptors-and-interphotoreceptor-matrix
#5
Majed Felemban, Birthe Dorgau, Nicola Claire Hunt, Dean Hallam, Darin Zerti, Roman Bauer, Yuchun Ding, Joseph Collin, David Steel, Natalio Krasnogor, Jumana Al-Aama, Susan Lindsay, Carla Mellough, Majlinda Lako
The extracellular matrix (ECM) plays an important role in numerous processes including cellular proliferation, differentiation, migration, maturation, adhesion guidance and axonal growth. To date, there has been no detailed analysis of the ECM distribution during retinal ontogenesis in humans and the functional importance of many ECM components is poorly understood. In this study, the expression of key ECM components in adult mouse and monkey retina, developing and adult human retina and retinal organoids derived from human pluripotent stem cells was studied...
May 16, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29777577/autologous-bone-marrow-mesenchymal-stem-cells-improve-the-quality-and-stability-of-vascularized-flap-surgery-of-irradiated-skin-in-pigs
#6
Christine Linard, Michel Brachet, Carine Strup-Perrot, Bruno L'homme, Elodie Busson, Claire Squiban, Valerie Holler, Michel Bonneau, Jean-Jacques Lataillade, Eric Bey, Marc Benderitter
Cutaneous radiation syndrome has severe long-term health consequences. Because it causes an unpredictable course of inflammatory waves, conventional surgical treatment is ineffective and often leads to a fibronecrotic process. Data about the long-term stability of healed wounds, with neither inflammation nor resumption of fibrosis, are lacking. In this study, we investigated the effect of injections of local autologous bone marrow-derived mesenchymal stromal cells (BM-MSCs), combined with plastic surgery for skin necrosis, in a large-animal model...
May 18, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29777374/the-tenascin-c-derived-peptide-vswrapta-promotes-neuronal-branching-via-transcellular-activation-of-the-focal-adhesion-kinase-fak-and-the-erk1-2-signaling-pathway-in-vitro
#7
Marvin Jarocki, Omar Sallouh, Ralf Weberskirch, Andreas Faissner
The central nervous system (CNS) of mammals has a limited regeneration capacity after traumatic events, which causes chronic functional disability. The development of biomaterials aims at providing support for the regeneration process. One strategy integrates peptides that mimic functional domains of extracellular matrix (ECM) or cell adhesion molecules with synthetic polymers designed to present growth-supporting cues to the neuronal microenvironment. Thus, small peptide sequences originating from molecules of the ECM may serve as promising bio-additives, acting as artificial matricryptins to gear cellular processes...
May 18, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29775222/abca1-inhibits-pdgf-induced-proliferation-and-migration-of-rat-airway-smooth-muscle-cell-through-blocking-tlr2-nf-%C3%AE%C2%BAb-nfatc1-signaling
#8
Wei Cheng, Kun Yan, Yanni Chen, Wen Zhang, Zongzheng Ji, Chengxue Dang
Airway remodeling is a key feature of asthma, characterized by abnormal proliferation and migration of airway smooth muscle cells (ASMCs). ABCA1, a member of the ATP-binding cassette family of active transporters, plays an essential role in the progression of lung diseases. However, the contributions of ABCA1 in ASMCs remain to be explored. The purpose of the present study was to investigate the functional role and potential molecular mechanism of ABCA1 in platelet derived growth factor (PDGF)-induced primary rat ASMC proliferation and migration...
May 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29775204/effects-of-%C3%AE-tocotrienol-on-ochratoxin-a-induced-nephrotoxicity-in-rats
#9
Sara Damiano, Luigi Navas, Patrizia Lombari, Serena Montagnaro, Iris M Forte, Antonio Giordano, Salvatore Florio, Roberto Ciarcia
Ochratoxin A (OTA), is a natural contaminant of the food chain worldwide involved in the development of different type of cancers in animals and humans. Several studies suggested that oxidative damage might contribute to increase the cytotoxicity and carcinogenicity capabilities of OTA. The aim of this study was to evaluate the possible protective effect of δ-tocotrienol (Delta), a natural form of vitamin E, against OTA-induced nephrotoxicity. Male Sprague-Dawley rats were treated with OTA and/or Delta by gavage for 14 days...
May 18, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29774119/periostin-a-signal-transduction-intermediate-in-tgf-%C3%AE-induced-emt-in-u-87mg-human-glioblastoma-cells-and-its-inhibition-by-anthocyanidins
#10
Amira Ouanouki, Sylvie Lamy, Borhane Annabi
Periostin is a secreted protein that is highly expressed in glioblastoma cells as compared to normal brain tissue, and is therefore considered as a potential biomarker in therapeutic modalities. Its contribution in the cancer cells invasive phenotype is, however, poorly understood. This work investigates the role of periostin in U-87 MG glioblastoma cell invasion, cell migration and in Transforming Growth Factor β (TGF-β)-induced epithelial-mesenchymal transition (EMT). Periostin gene silencing, using small interfering RNA, decreased TGF-β-induced mesenchymal marker expression of fibronectin and vimentin, partly through reduced Smad2, Akt and Fak phosphorylation as well as U-87 MG cell invasion and migration...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29774092/vorapaxar-treatment-reduces-mesangial-expansion-in-streptozotocin-induced-diabetic-nephropathy-in-mice
#11
Maaike Waasdorp, JanWillem Duitman, Sandrine Florquin, C Arnold Spek
Background: Twenty years after the onset of diabetes, up to 40% of patients develop diabetic nephropathy. Protease-activated receptor-1 (PAR-1) has recently been shown to aggravate the development of experimental diabetic nephropathy. PAR-1 deficient mice develop less albuminuria and glomerular lesions and PAR-1 stimulation induces proliferation and fibronectin production in mesangial cells in vitro . Vorapaxar is a clinically available PAR-1 inhibitor which is currently used for secondary prevention of ischemic events...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29772789/downregulation-of-the-s1p-transporter-spinster-homology-protein-2-spns2-exerts-an-anti-fibrotic-and-anti-inflammatory-effect-in-human-renal-proximal-tubular-epithelial-cells
#12
Olivier Blanchard, Bisera Stepanovska, Manuel Starck, Martin Erhardt, Isolde Römer, Dagmar Meyer Zu Heringdorf, Josef Pfeilschifter, Uwe Zangemeister-Wittke, Andrea Huwiler
Sphingosine kinase (SK) catalyses the formation of sphingosine 1-phosphate (S1P), which acts as a key regulator of inflammatory and fibrotic reactions, mainly via S1P receptor activation. Here, we show that in the human renal proximal tubular epithelial cell line HK2, the profibrotic mediator transforming growth factor β (TGFβ) induces SK-1 mRNA and protein expression, and in parallel, it also upregulates the expression of the fibrotic markers connective tissue growth factor (CTGF) and fibronectin. Stable downregulation of SK-1 by RNAi resulted in the increased expression of CTGF, suggesting a suppressive effect of SK-1-derived intracellular S1P in the fibrotic process, which is lost when SK-1 is downregulated...
May 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29771639/hic-5-expression-is-a-major-indicator-of-cancer-cell-morphology-migration-and-plasticity-in-three-dimensional-matrices
#13
Anushree C Gulvady, Fatemeh Dubois, Nicholas O Deakin, Gregory J Goreczny, Christopher E Turner
The focal adhesion proteins, Hic-5 and Paxillin have been previously identified as key regulators of MDA-MB-231 breast cancer cell migration and morphologic mesenchymal-amoeboid plasticity in three-dimensional extracellular matrices. However, their respective roles in other cancer cell types has not been evaluated. Herein, utilizing 3D cell-derived matrices and fibronectin-coated 1D substrates, we show that across a variety of cancer cell lines, the level of Hic-5 expression serves as the major indicator of the cells primary morphology, plasticity and in vitro invasiveness...
May 17, 2018: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/29771006/the-anti-fibrotic-effect-of-adenosine-a2b-receptor-antagonism-in-a-mouse-model-of-dermal-fibrosis
#14
Harry Karmouty-Quintana, Jose G Molina, Kemly Philip, Chiara Bellocchi, Brent Gudenkauf, Minghua Wu, Ning-Yuan Chen, Scott D Collum, Junsuk Ko, Sandeep K Agarwal, Shervin Assassi, Hongyan Zhong, Michael R Blackburn, Tingting Weng
OBJECTIVE: Systemic sclerosis (SSc - scleroderma) is a chronic disease that affects the skin and various internal organs. Dermal fibrosis is a major component of this disease. The mechanisms that promote dermal fibrosis remain elusive. Elevations in tissue adenosine levels and the subsequent engagement of the pro-fibrotic A2B adenosine receptor (ADORA2B) have been shown to regulate fibrosis in multiple organs including the lung, kidney and penis; however, the role of the ADORA2B in dermal fibrosis has not been investigated...
May 17, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29769710/jdp2-overexpression-provokes-cardiac-dysfunction-in-mice
#15
Jacqueline Heger, Julia Bornbaum, Alona Würfel, Christian Hill, Nils Brockmann, Renáta Gáspár, János Pálóczi, Zoltán V Varga, Márta Sárközy, Péter Bencsik, Tamás Csont, Szilvia Török, Baktybek Kojonazarov, Ralph Theo Schermuly, Kerstin Böngler, Mariana Parahuleva, Peter Ferdinandy, Rainer Schulz, Gerhild Euler
The transcriptional regulator JDP2 (Jun dimerization protein 2) has been identified as a prognostic marker for patients to develop heart failure after myocardial infarction. We now performed in vivo studies on JDP2-overexpressing mice, to clarify the impact of JDP2 on heart failure progression. Therefore, during birth up to the age of 4 weeks cardiac-specific JDP2 overexpression was prevented by doxycycline feeding in transgenic mice. Then, JDP2 overexpression was started. Already after 1 week, cardiac function, determined by echocardiography, decreased which was also resembled on the cardiomyocyte level...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29765214/tiotropium-inhibits-methacholine-induced-extracellular-matrix-production-via-%C3%AE-catenin-signaling-in-human-airway-smooth-muscle-cells
#16
Yating Huo, Lili Guan, Jiawen Xu, Luqian Zhou, Rongchang Chen
Background: Airway remodeling is an important feature of chronic obstructive pulmonary disease (COPD) that is associated with disease severity and irreversible airflow limitation. An extensive alteration of the extracellular matrix (ECM) surrounding the airway smooth muscle (ASM) bundle is one of the pathological manifestations of airway remodeling, which contributes to the decline in lung function. Tiotropium, a long-acting inhaled muscarinic receptor antagonist, has been confirmed to play a role in preventing airway remodeling including ECM deposition beyond bronchodilation in vivo, but the relationship between ASM cell (ASMC) relaxation and ECM production remains unclear...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29763414/cd93-promotes-integrin-%C3%AE-1-activation-and-fibronectin-fibrillogenesis-during-tumor-angiogenesis
#17
Roberta Lugano, Kalyani Vemuri, Di Yu, Michael Bergqvist, Anja Smits, Magnus Essand, Staffan Johansson, Elisabetta Dejana, Anna Dimberg
Tumor angiogenesis occurs through regulation of genes that orchestrate endothelial sprouting and vessel maturation, including deposition of a vessel-associated extracellular matrix. CD93 is a transmembrane receptor that is up-regulated in tumor vessels in many cancers, including high-grade glioma. Here, we demonstrate that CD93 regulates integrin-β1-signaling and organization of fibronectin fibrillogenesis during tumor vascularization. In endothelial cells and mouse retina, CD93 was found to be expressed in endothelial filopodia and to promote filopodia formation...
May 15, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29761841/prkar2b-promotes-prostate-cancer-metastasis-by-activating-wnt-%C3%AE-catenin-and-inducing-epithelial-mesenchymal-transition
#18
Jianjun Sha, Qing Han, Chenfei Chi, Yinjie Zhu, Jiahua Pan, Baijun Dong, Yiran Huang, Weiliang Xia, Wei Xue
Castration-resistant prostate cancers (CRPC) that occur after the failure of androgen-blocking therapies cause most of the deaths in prostate cancer (PCa) patients. In a previous study we identified that PRKAR2B expression is upregulated in CRPC and possesses potentials to develop CRPC. Here we further investigated the underlying mechanism of PRKAR2B in regulating prostate cancer metastasis. We established an androgen-independent LNCaPcell line (LNCaP-AI), and investigated the function of PRKAR2B on regulating cell invasion in vitro and in vivo...
May 15, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29760951/molecular-functional-analyses-revealed-essential-roles-of-hsp90-and-lamin-a-c-in-growth-migration-and-self-aggregation-of-dermal-papilla-cells
#19
Kanchalit Thanomkitti, Kedsarin Fong-Ngern, Kanyarat Sueksakit, Rattapon Thuangtong, Visith Thongboonkerd
Previous expression study using quantitative proteomics has shown that immune-mediated pathway may not be the main mechanism inducing alopecia areata (AA). Nevertheless, functional impact of such expression data set remained unknown and unexplored. This study thus aimed to define potentially novel mechanisms of the AA pathogenesis by functional investigations of the differentially expressed proteins previously identified from lesional biopsies. From 122 altered proteins, protein-protein interactions network analysis revealed that downregulated heat shock protein 90 (HSP90) and lamin A/C served as the central nodes of protein-protein interactions involving in several crucial biological functions, including cytoskeleton organization, extracellular matrix organization, and tissue development...
2018: Cell Death Discovery
https://www.readbyqxmd.com/read/29758456/gper-hippo-yap-signal-is-involved-in-bisphenol-s-induced-migration-of-triple-negative-breast-cancer-tnbc-cells
#20
Qianqian Deng, Guanmin Jiang, Yingmin Wu, Jiexin Li, Weiting Liang, Likun Chen, Qiao Su, Wuguo Li, Jun Du, Chris K C Wong, Zhuojia Chen, Hongsheng Wang
Nowadays, risk factors of triple-negative breast cancer (TNBC) metastasis are not well identified. Our present study reveals that an industrial chemical, bisphenol S (BPS), can promote the migration, but not the proliferation, of TNBC cells in vitro. BPS activates YAP, a key effector of Hippo pathway, by inhibiting its phosphorylation, which promotes YAP nuclear accumulation and up-regulates its downstream genes such as CTGF and ANKRD1. Inhibition of YAP blocks the BPS-triggered cell migration and up-regulation of fibronectin (FN) and vimentin (Vim)...
May 8, 2018: Journal of Hazardous Materials
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