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https://www.readbyqxmd.com/read/29351453/superoxide-inhibition-restores-endothelium-dependent-dilatation-in-aging-arteries-by-enhancing-impaired-adherens-junctions
#1
Fumin Chang, Sheila Flavahan, Nicholas A Flavahan
Endothelium-dependent, nitric oxide (NO)-mediated dilatation is impaired in aging arteries. The dysfunction reflects increased production of reactive oxygen species (ROS), is reversed by inhibiting superoxide with superoxide dismutase (SOD) mimics, and is assumed to reflect superoxide-mediated inactivation of NO. However, the dysfunction also reflects Src-dependent degradation and loss of VE-cadherin from adherens junctions, resulting in a selective impairment in the ability of the junctions to amplify endothelial dilatation...
January 12, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351408/choroid-plexus-epithelial-cells-express-the-adhesion-protein-p-cadherin-at-cell-cell-contacts-and-syntaxin-4-in-the-luminal-membrane-domain
#2
Inga Baasch Christensen, Esben Nees Mogensen, Helle Hasager Damkier, Jeppe Praetorius
The choroid plexus epithelial cells (CPECs) belong to a small group of polarized cells, where the Na+,K+-ATPase is expressed in the luminal membrane. The basic polarity of the cells is, therefore, still debated. We investigated the subcellular distribution of an array of proteins known to play fundamental roles in either in establishing and maintaining basic cell polarity or the polarized delivery and recycling of plasma membrane proteins. Immunofluorescence histochemical analysis was applied to determine the subcellular localization of apical and basolateral membrane determinants...
January 10, 2018: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29351406/interleukin-6-promotes-a-sustained-loss-of-endothelial-barrier-function-via-janus-kinase-mediated-stat3-phosphorylation-and-de-novo-protein-synthesis
#3
Hiba Alsaffar, Nina Martino, Joshua P Garrett, Alejandro P Adam
Vascular leakage is a hallmark of the inflammatory response. Acute changes in endothelial permeability are due to post-translational changes in intercellular adhesion and cytoskeleton proteins. However, little is known about the mechanisms leading to long-term changes in vascular permeability. Here, we show that Interleukin-6 (IL-6) promotes an increase in endothelial monolayer permeability that lasts over 24 h and demonstrate that activation of Src and MEK/Erk pathways are required only for short-term increases in permeability, being dispensable after 2 h...
January 10, 2018: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29351356/epha2-ephrin-a1-mediate-corneal-epithelial-cell-compartmentalization-via-adam10-regulation-of-egfr-signaling
#4
Nihal Kaplan, Rosa Ventrella, Han Peng, Sonali Pal-Ghosh, Constadina Arvanitis, Joshua Z Rappoport, Brian J Mitchell, Mary Ann Stepp, Robert M Lavker, Spiro Getsios
Purpose: Progenitor cells of the limbal epithelium reside in a discrete area peripheral to the more differentiated corneal epithelium and maintain tissue homeostasis. What regulates the limbal-corneal epithelial boundary is a major unanswered question. Ephrin-A1 ligand is enriched in the limbal epithelium, whereas EphA2 receptor is concentrated in the corneal epithelium. This reciprocal pattern led us to assess the role of ephrin-A1 and EphA2 in limbal-corneal epithelial boundary organization...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29351209/the-prognostic-significance-of-histone-demethylase-utx-in-esophageal-squamous-cell-carcinoma
#5
Shau-Hsuan Li, Hung-I Lu, Wan-Ting Huang, Wan-Yu Tien, Ya-Chun Lan, Wei-Che Lin, Hsin-Ting Tsai, Chang-Han Chen
The dysregulation of the ubiquitously transcribed TPR gene on the X chromosome (UTX) has been reported to be involved in the oncogenesis of several types of cancers. However, the expression and significance of UTX in esophageal squamous cell carcinoma (ESCC) remains largely undetermined. Immunohistochemistry was performed in 106 ESCC patients, and correlated with clinicopathological features and survival. The functional role of UTX in ESCC cells was determined by UTX-mediated siRNA. Univariate analyses showed that high UTX expression was associated with superior overall survival (OS, p = 0...
January 19, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29350680/effects-of-microrna-135a-on-the-epithelial-mesenchymal-transition-migration-and-invasion-of-bladder-cancer-cells-by-targeting-gsk3%C3%AE-through-the-wnt-%C3%AE-catenin-signaling-pathway
#6
Xia-Wa Mao, Jia-Quan Xiao, Zhong-Yi Li, Yi-Chun Zheng, Nan Zhang
This study investigated the effects of microRNA-135a (miR-135a) targeting of glycogen synthase kinase 3β (GSK3β) on the epithelial-mesenchymal transition (EMT), migration and invasion of bladder cancer (BC) cells by mediating the Wnt/β-catenin signaling pathway. BC and adjacent normal tissues were collected from 165 BC patients. Western blotting and quantitative real-time PCR were used to detect the expression of GSK3β, β-catenin, cyclinD1, E-cadherin, vimentin and miR-135a in BC tissues and cells. Cells were assigned to blank, negative control (NC), miR-135a mimics, miR-135a inhibitors, small interfering RNA (siRNA)-GSK3β or miR-135a inhibitors+siRNA-GSK3β groups...
January 19, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29350142/lethal-respiratory-disease-associated-with-human-rhinovirus%C3%A2-c-in-wild-chimpanzees-uganda-2013
#7
Erik J Scully, Sarmi Basnet, Richard W Wrangham, Martin N Muller, Emily Otali, David Hyeroba, Kristine A Grindle, Tressa E Pappas, Melissa Emery Thompson, Zarin Machanda, Kelly E Watters, Ann C Palmenberg, James E Gern, Tony L Goldberg
We describe a lethal respiratory outbreak among wild chimpanzees in Uganda in 2013 for which molecular and epidemiologic analyses implicate human rhinovirus C as the cause. Postmortem samples from an infant chimpanzee yielded near-complete genome sequences throughout the respiratory tract; other pathogens were absent. Epidemiologic modeling estimated the basic reproductive number (R0) for the epidemic as 1.83, consistent with the common cold in humans. Genotyping of 41 chimpanzees and examination of 24 published chimpanzee genomes from subspecies across Africa showed universal homozygosity for the cadherin-related family member 3 CDHR3-Y529 allele, which increases risk for rhinovirus C infection and asthma in human children...
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29349903/gp73-promotes-invasion-and-metastasis-of-bladder-cancer-by-regulating-the-epithelial-mesenchymal-transition-through-the-tgf-%C3%AE-1-smad2-signalling-pathway
#8
Han-Jie Yang, Ge-Liang Liu, Bo Liu, Tian Liu
This study investigated the effects of Golgi membrane protein 73 (GP73) on the epithelial-mesenchymal transition (EMT) and on bladder cancer cell invasion and metastasis through the TGF-β1/Smad2 signalling pathway. Paired bladder cancer and adjacent tissue samples (102) and normal bladder tissue samples (106) were obtained. Bladder cancer cell lines (T24, 5637, RT4, 253J and J82) were selected and assigned to blank, negative control (NC), TGF-β, thrombospondin-1 (TSP-1), TGF-β1+ TSP-1, GP73-siRNA-1, GP73-siRNA-2, GP73-siRNA-1+ TSP-1, GP73-siRNA-1+ pcDNA-GP73, WT1-siRNA and WT1-siRNA + GP73-siRNA-1 groups...
January 19, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29349669/positive-correlation-between-matrix-metalloproteinases-and-epithelial-to-mesenchymal-transition-and-its-association-with-clinical-outcome-in-bladder-cancer-patients
#9
R Singh, A Mandhani, V Agrawal, Minal Garg
Involvement of matrix metalloproteinases (MMPs) in the pathogenesis of urothelial carcinoma elects them to be sensitive marker for clinical and prognostic implications. MMPs regulate tumor growth and invasion by inducing epithelial-to-mesenchymal transition (EMT) which is characterized by the complex reprogramming of epithelial cells and ultimately bring about major changes in the structural organization of bladder urothelium. The present study has been undertaken to evaluate the clinical relevance of MMPs in two distinct types of bladder cancer disease...
January 18, 2018: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29348886/frk-inhibits-breast-cancer-cell-migration-and-invasion-by-suppressing-epithelial-mesenchymal-transition
#10
Yetunde Ogunbolude, Chenlu Dai, Edward T Bagu, Raghuveera Kumar Goel, Sayem Miah, Joshua MacAusland-Berg, Chi Ying Ng, Rajni Chibbar, Scott Napper, Leda Raptis, Frederick Vizeacoumar, Franco Vizeacoumar, Keith Bonham, Kiven Erique Lukong
The human fyn-related kinase (FRK) is a non-receptor tyrosine kinase known to have tumor suppressor activity in breast cancer cells. However, its mechanism of action has not been fully characterized. We generated FRK-stable MDA-MB-231 breast cancer cell lines and analyzed the effect on cell proliferation, migration, and invasiveness. We also used kinome analysis to identify potential FRK-regulated signaling pathways. We employed both immunoblotting and RT-PCR to identify/validate FRK-regulated targets (proteins and genes) in these cells...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29348693/variants-in-members-of-the-cadherin-catenin-complex-cdh1-and-ctnnd1-cause-blepharocheilodontic-syndrome
#11
Anneke Kievit, Federico Tessadori, Hannie Douben, Ingrid Jordens, Madelon Maurice, Jeannette Hoogeboom, Raoul Hennekam, Sheela Nampoothiri, Hülya Kayserili, Marco Castori, Margo Whiteford, Connie Motter, Catherine Melver, Michael Cunningham, Anne Hing, Nancy M Kokitsu-Nakata, Siulan Vendramini-Pittoli, Antonio Richieri-Costa, Annette F Baas, Corstiaan C Breugem, Karen Duran, Maarten Massink, Patrick W B Derksen, Wilfred F J van IJcken, Leontine van Unen, Fernando Santos-Simarro, Pablo Lapunzina, Vera L Gil-da Silva Lopes, Elaine Lustosa-Mendes, Max Krall, Anne Slavotinek, Victor Martinez-Glez, Jeroen Bakkers, Koen L I van Gassen, Annelies de Klein, Marie-José H van den Boogaard, Gijs van Haaften
Blepharocheilodontic syndrome (BCDS) consists of lagophthalmia, ectropion of the lower eyelids, distichiasis, euryblepharon, cleft lip/palate and dental anomalies and has autosomal dominant inheritance with variable expression. We identified heterozygous variants in two genes of the cadherin-catenin complex, CDH1, encoding E-cadherin, and CTNND1, encoding p120 catenin delta1 in 15 of 17 BCDS index patients, as was recently described in a different publication. CDH1 plays an essential role in epithelial cell adherence; CTNND1 binds to CDH1 and controls the stability of the complex...
January 18, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29348665/pcdhga9-acts-as-a-tumor-suppressor-to-induce-tumor-cell-apoptosis-and-autophagy-and-inhibit-the-emt-process-in-human-gastric-cancer
#12
Junyong Weng, Jingbo Xiao, Yushuai Mi, Xu Fang, Yahuang Sun, Shanbao Li, Zhiwei Qin, Xu Li, Tingting Liu, Senlin Zhao, Lisheng Zhou, Yugang Wen
The results of a cDNA  array revealed that protocadherin gamma subfamily A, 9 (PCDHGA9) was significantly decreased in SGC-7901 gastric cancer (GC) cells compared with GES-1 normal gastric cells and was strongly associated with the Wnt/β-catenin and transforming growth factor-β (TGF-β)/Smad2/3 signaling pathway. As a member of the cadherin family, PCDHGA9 functions in both cell-cell adhesion and nuclear signaling. However, its role in tumorigenicity or metastasis has not been reported. In the present study, we found that PCDHGA9 was decreased in GC tissues compared with corresponding normal mucosae and its expression was correlated with the GC TNM stage, the UICC stage, differentiation, relapse, and metastasis (p < 0...
January 18, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29348629/the-suppressive-role-of-calcium-sensing-receptor-in-endometrial-cancer
#13
Xiaoyan Xin, Xianqin Zeng, Dilu Feng, Teng Hua, Shuangge Liu, Shuqi Chi, Qinghua Hu, Hongbo Wang
Studies have shown that calcium sensing receptor (CaSR) is involved in the progressions of several human cancers. However, the role of CaSR in endometrial cancer remains unknown. This study provides a preliminary analysis of the CaSR effect on endometrial cancer development. Ectopic CaSR expression by lentiviral transfection (CaSR-OV) in Ishikawa cells significantly increased intracellular calcium ([Ca2+]i) levels and cell apoptosis. E-cadherin and β-catenin expression and complex formation at the membrane were increased in CaSR-OV Ishikawa cells relative to control Ishikawa cells (vector)...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348601/exclusion-from-spheroid-formation-identifies-loss-of-essential-cell-cell-adhesion-molecules-in-colon-cancer-cells
#14
Mira Stadler, Martin Scherzer, Stefanie Walter, Silvio Holzner, Karoline Pudelko, Angelika Riedl, Christine Unger, Nina Kramer, Beatrix Weil, Jürgen Neesen, Markus Hengstschläger, Helmut Dolznig
Many cell lines derived from solid cancers can form spheroids, which recapitulate tumor cell clusters and are more representative of the in vivo situation than 2D cultures. During spheroid formation, a small proportion of a variety of different colon cancer cell lines did not integrate into the sphere and lost cell-cell adhesion properties. An enrichment protocol was developed to augment the proportion of these cells to 100% purity. The basis for the separation of spheroids from non-spheroid forming (NSF) cells is simple gravity-sedimentation...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348177/dasatinib-increases-endothelial-permeability-leading-to-pleural-effusion
#15
Carole Phan, Etienne-Marie Jutant, Ly Tu, Raphaël Thuillet, Andrei Seferian, David Montani, Alice Huertas, Jan van Bezu, Fabian Breijer, Anton Vonk Noordegraaf, Marc Humbert, Jurjan Aman, Christophe Guignabert
Pleural effusion is a frequent side-effect of dasatinib, a second-generation tyrosine kinase inhibitor used in the treatment of chronic myelogenous leukaemia. However, the underlying mechanisms remain unknown. We hypothesised that dasatinib alters endothelial integrity, resulting in increased pulmonary vascular endothelial permeability and pleural effusion.To test this, we established the first animal model of dasatinib-related pleural effusion, by treating rats with a daily regimen of high doses of dasatinib (10 mg·kg-1·day-1 for 8 weeks)...
January 2018: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29346935/chase-and-run-dynamics-in-cell-motility-and-the-molecular-rupture-of-interacting-active-elastic-dimers
#16
David Mayett, Nicholas Bitten, Moumita Das, J M Schwarz
Cell migration in morphogenesis and cancer metastasis typically involves interplay between different cell types. We construct and study a minimal, one-dimensional model composed of two different motile cells with each cell represented as an active elastic dimer. The interaction between the two cells via cadherins is modeled as a spring that can rupture beyond a threshold force as it undergoes dynamic loading from the interacting motile cells. We obtain a phase diagram consisting of chase-and-run dynamics and clumping dynamics as a function of the stiffness of the interaction spring and the threshold force and, therefore, posit that active rupture, or rupture via active forces, is a mechanosensitive means to regulate dynamics between cells...
September 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346528/a-novel-stromal-lncrna-signature-reprograms-fibroblasts-to-promote-the-growth-of-oral-squamous-cell-carcinoma-via-lncrna-caf-interleukin-33
#17
Liang Ding, Jing Ren, Dongya Zhang, Yi Li, Xiaofeng Huang, Qingang Hu, Hui Wang, Yuxian Song, Yanhong Ni, Yayi Hou
Stromal carcinoma-related fibroblasts (CAFs) are the main type of non-immune cells in the tumor microenvironment (TME). CAFs interact with cancer cells to promote tumor proliferation. Long non-coding RNAs (lncRNAs) are known to regulate cell growth, apoptosis, and metastasis of cancer cells, but their role in stromal cells is unclear. Using RNA sequencing, we identified a stromal lncRNA signature during the transformation of CAFs from normal fibroblasts (NFs) in oral squamous cell carcinoma (OSCC). We uncovered an uncharacterized lncRNA, FLJ22447, which was remarkably up-regulated in CAFs, referred to LncRNA-CAF (Lnc-CAF) hereafter...
January 13, 2018: Carcinogenesis
https://www.readbyqxmd.com/read/29346438/colonization-of-the-cervicovaginal-space-with-gardnerella-vaginalis-leads-to-local-inflammation-and-cervical-remodeling-in-pregnant-mice
#18
Luz-Jeannette Sierra, Amy G Brown, Guillermo O Barilá, Lauren Anton, Carrie E Barnum, Snehal S Shetye, Louis J Soslowsky, Michal A Elovitz
The role of the cervicovaginal (CV) microbiome in regulating cervical function during pregnancy is poorly understood. Gardnerella vaginalis (G. vaginalis) is the most common bacteria associated with the diagnosis of bacterial vaginosis (BV). While BV has been associated with preterm birth (PTB), clinical trials targeting BV do not decrease PTB rates. It remains unknown if G. vaginalis is capable of triggering molecular, biomechanical and cellular events that could lead to PTB. The objective of this study was to determine if cervicovaginal colonization with G...
2018: PloS One
https://www.readbyqxmd.com/read/29345295/upregulation-of-the-bdnf-trkb-pathway-promotes-epithelial-mesenchymal-transition-as-well-as-the-migration-and-invasion-of-cervical-cancer
#19
Yuan Yuan, Hai-Qiong Ye, Qian-Chuan Ren
Brain-derived neurotrophic factor (BDNF) has previously been demonstrated to be associated with several types of cancer. In addition, its receptor, tropomyosin related kinase B (TrkB) is involved in tumor invasion and metastasis. Epithelial-mesenchymal transition (EMT) is associated with metastasis in cancers. Thus, The aim of the present study was to examine whether BDNF/TrKB expression is linked to a poor survival and the acquisition of the EMT phenotype in cervical cancer. We found that a high positive expression of BDNF/TrKB was associated with poor survival in cervical cancer...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29345293/s100b-expression-in-breast-cancer-as-a-predictive-marker-for-cancer-metastasis
#20
Meng-Chi Yen, Yung-Chi Huang, Jung-Yu Kan, Po-Lin Kuo, Ming-Feng Hou, Ya-Ling Hsu
In the tumor microenvironment, soluble molecules play important role in the establishment of a pre-metastatic niche. The S100 calcium-binding protein family are inflammatory molecules that contribute to the development of a pro-inflammatory tumor microenvironment. S100B belongs to the S100 family and serum S100B (also known as S100beta) serves as a marker for metastasis in lung cancer, ovarian cancer and melanoma. However, the association between S100B and the metastasis of breast cancer is not yet well understood...
February 2018: International Journal of Oncology
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