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https://www.readbyqxmd.com/read/27932757/-expressions-of-epithelial-cell-adhesion-molecule-vimentin-and-n-cadherin-in-molecular-subtypes-of-breast-cancer-and-the-correlation-among-them
#1
Limei Fu, Min Liu, Xuemei Yu, Xinjun Li
To examine the expressions of epithelial cell adhesion molecule (EpCAM), vimentin and N-cadherin in breast cancer and its molecular subtypes, and to explore the correlation among them.
 Methods: The expressions of EpCAM, vimentin and N-cadherin were detected by immunohistochemistry in 835 patients with breast cancer, and their correlations with clinical pathological features and prognosis were analyzed.
 Results: The expression rates of EpCAM, vimentin and N-cadherin in the patients were 53.4%, 11.4% and 9...
November 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27931799/oncocytic-papillary-renal-cell-carcinoma-a-clinicopathological-and-genetic-analysis-and-indolent-clinical-course-in-14-cases
#2
Guiyan Han, Wenjuan Yu, Jing Chu, Yan Liu, Yanxia Jiang, Yujun Li, Wei Zhang
A sort of PRCC with distinct eosinophilic cytoplasm named Oncocytic Papillary Renal Cell Carcinoma (OPRCC) has been increasingly attracting the attention of researchers recently. However, owing to the rarity of OPRCC, the clinicopathological and genetic features of the tumor have still not been well elucidated and whether it should be regarded as an independent subtype of PRCC remains controversial. Herein, a cohort of 14 OPRCCs was studied with the aim of revealing the distinct clinicopathological features, facilitating the classification and correct diagnosis of OPRCC...
April 28, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27931258/htra-mediated-e-cadherin-cleavage-is-limited-to-degp-and-degq-homologs-expressed-by-gram-negative-pathogens
#3
Carmen M Abfalter, Maria Schubert, Camilla Götz, Thomas P Schmidt, Gernot Posselt, Silja Wessler
BACKGROUND: The serine proteases HtrA/DegP secreted by the human gastrointestinal pathogens Helicobacter pylori (H. pylori) and Campylobacter jejuni (C. jejuni) cleave the mammalian cell adhesion protein E-cadherin to open intercellular adhesions. A wide range of bacteria also expresses the HtrA/DegP homologs DegQ and/or DegS, which significantly differ in structure and function. METHODS: E-cadherin shedding was investigated in infection experiments with the Gram-negative pathogens H...
December 8, 2016: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/27930828/integrin-and-cadherin-clusters-a-robust-way-to-organize-adhesions-for-cell-mechanics
#4
Rishita Changede, Michael Sheetz
Recent studies at the nanometer scale have revealed that relatively uniform clusters of adhesion proteins (50-100 nm) constitute the modular units of cell adhesion sites in both cell-matrix and cell-cell adhesions. Super resolution microscopy and membrane protein diffusion studies both suggest that even large focal adhesions are formed of 100 nm clusters that are loosely aggregated. Clusters of 20-50 adhesion molecules (integrins or cadherins) can support large forces through avidity binding interactions but can also be disassembled or endocytosed rapidly...
December 8, 2016: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/27930738/mir-151-3p-targets-twist1-to-repress-migration-of-human-breast-cancer-cells
#5
Ting-Chih Yeh, Tzu-Ting Huang, Tien-Shun Yeh, Yu-Ren Chen, Kai-Wen Hsu, Pen-Hui Yin, Hsin-Chen Lee, Ling-Ming Tseng
TWIST1 is a highly conserved basic helix-loop-helix transcription factor that contributes to cancer metastasis by promoting an epithelial-mesenchymal transition and repressing E-cadherin gene expression in breast cancer. In this study, we explored the potential role of miR-151 in TWIST1 expression and cancer properties in human breast cancer cells. We found that the human TWIST1 3'UTR contains a potential binging site for miR-151-3p at the putative target sequence 5'-CAGUCUAG-3'. Using a TWIST1-3'UTR luciferase reporter assay, we demonstrated that the target sequence within the TWIST1 3'UTR is required for miR-151-3p regulation of TWIST1 expression...
2016: PloS One
https://www.readbyqxmd.com/read/27930308/epithelial-self-healing-is-recapitulated-by-a-3d-biomimetic-e-cadherin-junction
#6
Daniel J Cohen, Martijn Gloerich, W James Nelson
Epithelial monolayers undergo self-healing when wounded. During healing, cells collectively migrate into the wound site, and the converging tissue fronts collide and form a stable interface. To heal, migrating tissues must form cell-cell adhesions and reorganize from the front-rear polarity characteristic of cell migration to the apical-basal polarity of an epithelium. However, identifying the "stop signal" that induces colliding tissues to cease migrating and heal remains an open question. Epithelial cells form integrin-based adhesions to the basal extracellular matrix (ECM) and E-cadherin-mediated cell-cell adhesions on the orthogonal, lateral surfaces between cells...
December 5, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27929537/upregulation-of-mir-205-under-hypoxia-promotes-epithelial-mesenchymal-transition-by-targeting-aspp2
#7
Xingwen Wang, Miao Yu, Kunming Zhao, Mengmeng He, Wenjie Ge, Yuhui Sun, Yihua Wang, Haizhu Sun, Ying Hu
The epithelial-mesenchymal transition (EMT) is one of the crucial procedures for cancer invasion and distal metastasis. Despite undergoing intensive studies, the mechanisms underlying EMT remain to be completely elucidated. Here, we identified that apoptosis-stimulating protein of p53-2 (ASPP2) is a novel target of MiR-205 in various cancers. Interestingly, the binding site of MiR-205 at the 3'-untranslated region of ASPP2 was highly conserved among different species. An inverse correlation between MiR-205 and ASPP2 was further observed in vivo in cervical cancers, suggesting MiR-205 may be an important physiological inhibitor of ASPP2...
December 8, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27928465/gene-expression-and-pathway-analysis-of-ctnnb1-in-cancer-and-stem-cells
#8
Shihori Tanabe, Takeshi Kawabata, Kazuhiko Aoyagi, Hiroshi Yokozaki, Hiroki Sasaki
AIM: To investigate β-catenin (CTNNB1) signaling in cancer and stem cells, the gene expression and pathway were analyzed using bioinformatics. METHODS: The expression of the catenin β 1 (CTNNB1) gene, which codes for β-catenin, was analyzed in mesenchymal stem cells (MSCs) and gastric cancer (GC) cells. Beta-catenin signaling and the mutation of related proteins were also analyzed using the cBioPortal for Cancer Genomics and HOMology modeling of Complex Structure (HOMCOS) databases...
November 26, 2016: World Journal of Stem Cells
https://www.readbyqxmd.com/read/27923917/metadherin-astrocyte-elevated-gene-1-positively-regulates-the-stability-and-function-of-forkhead-box-m1-during-tumorigenesis
#9
Lixuan Yang, Kejun He, Sheng Yan, Yibing Yang, Xinya Gao, Maolei Zhang, Zhibo Xia, Zhengsong Huang, Suyun Huang, Nu Zhang
BACKGROUND: Forkhead box M1 (FOXM1) is overexpressed and activates numerous oncoproteins in tumors. However, the mechanism by which the FOXM1 protein aberrantly accumulates in human cancer remains uncertain. This study was designed to clarify the upstream signaling pathway(s) that regulate FOXM1 protein stability and transcriptional activity. METHODS: Mass spectrometry and immunoprecipitation were performed to identify the FOXM-metadherin (MTDH) interaction. In vivo and in vitro ubiquitination assays were conducted to test the effect of MTDH on FOXM1 stability...
December 6, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/27923905/%C3%AE-lapachone-inhibits-lung-metastasis-of-colorectal-cancer-by-inducing-apoptosis-of-ct26-cells
#10
Ji-Ye Kee, Yo-Han Han, Jinbong Park, Dae-Seung Kim, Jeong-Geon Mun, Kwang Seok Ahn, Hyun-Jung Kim, Jae-Young Um, Seung-Heon Hong
BACKGROUND: β-Lapachone is a quinone-containing compound found in red lapacho (Tabebuia impetiginosa, syn. T avellanedae) trees. Lapacho has been used in traditional medicine by several South and Central American indigenous people to treat various types of cancer. The purpose of this study was to investigate the antimetastatic properties of β-lapachone and the underlying mechanisms using colon cancer cells. METHODS: This research used metastatic murine colon cancer cell lines, colon 26 (CT26) and colon 38 (MC38)...
December 5, 2016: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/27923832/ese3-inhibits-pancreatic-cancer-metastasis-by-upregulating-e-cadherin
#11
Tiansuo Zhao, Wenna Jiang, Xiuchao Wang, Hongwei Wang, Chen Zheng, Yang Li, Yan Sun, Chongbiao Huang, Zhi-Bo Han, Shengyu Yang, Zhiliang Jia, Keping Xie, He Ren, Jihui Hao
The ETS family transcription factor ESE3 is a crucial element in differentiation and development programs for many epithelial tissues. Here we report its role as a tumor suppressor in pancreatic cancer. We observed drastically lower ESE3 expression in pancreatic ductal adenocarcinomas (PDAC) compared to adjacent normal pancreatic tissue. Reduced expression of ESE3 in PDAC correlated closely with an increase in lymph node metastasis and vessel invasion and a decrease in relapse-free and overall survival in patients...
December 6, 2016: Cancer Research
https://www.readbyqxmd.com/read/27923320/3d-co-culture-model-to-analyze-the-crosstalk-between-endothelial-and-smooth-muscle-cells
#12
Minu Karthika Ganesan, Richard Finsterwalder, Heide Leb, Ulrike Resch, Karin Neumüller, Rainer de Martin, Peter Petzelbauer
The response of blood vessels to physiological and pathological stimuli partly depends on the crosstalk between endothelial cells (EC) lining the luminal side and smooth muscle cells (SMC) building the inner part of the vascular wall. Thus, the in vitro analysis of the pathophysiology of blood vessels requires co-culture systems of EC and SMC. We have developed and validated a modified 3D sandwich co-culture (3D SW-CC) of EC and SMC employing open µ-Slides with a thin glass bottom allowing direct imaging. The culture dish comprises of an intermediate plate to minimize the meniscus resulting in homogenous cell distribution...
December 6, 2016: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/27922665/translocation-of-bbap-from-the-cytoplasm-to-the-nucleus-reduces-the-metastatic-ability-of-vemurafenib-resistant-skmel28-cells
#13
Nguyen Dinh Thang, Nguyen Van Minh, Pham Thu Huong
To the best of our knowledge, the present study is the first to demonstrate that treatment of vemurafenib-resistant SKMEL28 (SKMEL28-R) cells with paclitaxel leads to a shift in localization of the E3-ligase BBAP from the cytoplasm to the nucleus, consequently decreasing the metastatic ability of this cell line. The present study revealed that the movement of BBAP from the cytoplasm to nucleus initiated a change in cell morphology. In addition, the translocation of BBAP led to a decrease of metastatic characteristics in SKMEL28‑R cells, including migration and invasion via downregulation of the phosphorylated form of focal adhesion kinase and N‑cadherin, as well as an upregulation of p21 and E-cadherin...
December 2, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27922008/defining-functional-interactions-during-biogenesis-of-epithelial-junctions
#14
J C Erasmus, S Bruche, L Pizarro, N Maimari, T Pogglioli, C Tomlinson, J Lees, I Zalivina, A Wheeler, A Alberts, A Russo, V M M Braga
In spite of extensive recent progress, a comprehensive understanding of how actin cytoskeleton remodelling supports stable junctions remains to be established. Here we design a platform that integrates actin functions with optimized phenotypic clustering and identify new cytoskeletal proteins, their functional hierarchy and pathways that modulate E-cadherin adhesion. Depletion of EEF1A, an actin bundling protein, increases E-cadherin levels at junctions without a corresponding reinforcement of cell-cell contacts...
December 6, 2016: Nature Communications
https://www.readbyqxmd.com/read/27920252/group-i-paks-promote-skeletal-myoblast-differentiation-in-vivo-and-in-vitro
#15
Giselle A Joseph, Min Lu, Maria Radu, Jennifer K Lee, Steven J Burden, Jonathan Chernoff, Robert S Krauss
Skeletal myogenesis is regulated by signal transduction, but the factors and mechanisms involved are not well understood. The group I Paks, Pak1 and Pak2, are related protein kinases and direct effectors of Cdc42 and Rac1. Group I Paks are ubiquitously expressed and specifically required for myoblast fusion in Drosophila We report that both Pak1 and Pak2 are activated during mammalian myoblast differentiation. One pathway of activation is initiated by N-cadherin ligation, and involves the cadherin co-receptor Cdo with its downstream effector, Cdc42...
December 5, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27919967/epithelial-mesenchymal-expression-phenotype-of-primary-melanoma-and-matched-metastases-and-relationship-with-overall-survival
#16
Shaofeng Yan, Britt M Holderness, Zhongze Li, Gregory D Seidel, Jiang Gui, Jan L Fisher, Marc S Ernstoff
E-Cadherin and N-cadherin are important components of epithelial-mesenchymal transition (EMT). The majority of studies on EMT in melanoma have been performed with cultured cell lines or pooled melanoma samples. The goal of our study was to evaluate the expression of E-cadherin and N-cadherin in matched tissue samples from primary and metastatic sites of melanoma and to determine the correlation with survival outcome. We analyzed tissues from 42 melanoma primary lesions and their corresponding metastases, as well as 53 benign nevi, for expression levels of E-cadherin and N-cadherin using immunohistochemical methods...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919618/electric-field-induced-suppression-of-pten-drives-epithelial-to-mesenchymal-transition-via-mtorc1-activation
#17
Tiantian Yan, Xupin Jiang, Xiaowei Guo, Wen Chen, Di Tang, Junhui Zhang, Xingyue Zhang, Dongxia Zhang, Qiong Zhang, Jiezhi Jia, Yuesheng Huang
BACKGROUND: Naturally occurring electric fields (EFs) are an intrinsic property of wounds. Endogenous EFs in skin wounds play critical roles in the dynamic and well-ordered biological process of wound healing. The epithelial-to-mesenchymal transition (EMT) allows keratinocytes to transition from sedentary cells to motile cells, facilitating wound healing. However, EMT-related studies have been performed without considering endogenous EFs. Thus, the relationship between electrical signals and the EMT remain elusive...
November 18, 2016: Journal of Dermatological Science
https://www.readbyqxmd.com/read/27919468/somatic-gnaq-mutation-is-enriched-in-brain-endothelial-cells-in%C3%A2-sturge-weber-syndrome
#18
Lan Huang, Javier A Couto, Anna Pinto, Sanda Alexandrescu, Joseph R Madsen, Arin K Greene, Mustafa Sahin, Joyce Bischoff
BACKGROUND: Sturge-Weber syndrome (SWS) is a rare congenital neurocutaneous disorder characterized by facial and extracraniofacial capillary malformations and capillary-venule malformations in the leptomeninges. A somatic mosaic mutation in GNAQ (c.548G>A; p.R183Q) was found in SWS brain and skin capillary malformations. Our laboratory showed endothelial cells in skin capillary malformations are enriched for the GNAQ mutation. The purpose of this study is to determine whether the GNAQ mutation is also enriched in endothelial cells in affected SWS brain...
October 21, 2016: Pediatric Neurology
https://www.readbyqxmd.com/read/27918469/dietary-compound-chrysin-inhibits-retinal-neovascularization-with-abnormal-capillaries-in-db-db-mice
#19
Min-Kyung Kang, Sin-Hye Park, Yun-Ho Kim, Eun-Jung Lee, Lucia Dwi Antika, Dong Yeon Kim, Yean-Jung Choi, Young-Hee Kang
Diabetic retinopathy (DR) develops in a significant proportion of patients with chronic diabetes, characterized by retinal macular edema and abnormal retinal vessel outgrowth leading to vision loss. Chrysin, a naturally-occurring flavonoid found in herb and honeycomb, has anti-inflammatory, antioxidant, and anti-cancer properties. This study sought to determine the protective effects of chrysin on retinal neovascularization with abnormal vessels and blood-retinal barrier (BRB) breakdown in 33 mM glucose-exposed human retinal endothelial cells and in db/db mouse eyes...
December 3, 2016: Nutrients
https://www.readbyqxmd.com/read/27918105/resveratrol-inhibits-proliferation-invasion-and-epithelial-mesenchymal-transition-by-increasing-mir-200c-expression-in-hct-116-colorectal-cancer-cells
#20
Fatemeh Karimi Dermani, Massoud Saidijam, Razieh Amini, Ali Mahdavinezhad, Korosh Heydari, Rezvan Najafi
OBJECTIVE: Colorectal cancer (CRC) is one of the most common malignancies, associated with high rates of relapse. A notable challenge in treatment is low response rate to current therapies for advanced CRC. The miR-200c plays an essential role in tumor suppression by inhibiting epithelial-mesenchymal transition (EMT). Resveratrol, a natural compound found in red wine, reveals anti-cancer properties in several types of cancers such as CRC. The aim of current study was to evaluate the effects of resveratrol on proliferation, apoptosis and invasion of HCT-116 cells and also expression of EMT-related genes in presences or absence of miR-200c...
December 5, 2016: Journal of Cellular Biochemistry
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