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https://www.readbyqxmd.com/read/27931258/htra-mediated-e-cadherin-cleavage-is-limited-to-degp-and-degq-homologs-expressed-by-gram-negative-pathogens
#1
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/27930738/mir-151-3p-targets-twist1-to-repress-migration-of-human-breast-cancer-cells
#2
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
#3
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
#4
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
#5
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/27923832/ese3-inhibits-pancreatic-cancer-metastasis-by-upregulating-e-cadherin
#6
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/27922665/translocation-of-bbap-from-the-cytoplasm-to-the-nucleus-reduces-the-metastatic-ability-of-vemurafenib-resistant-skmel28-cells
#7
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
#8
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/27919967/epithelial-mesenchymal-expression-phenotype-of-primary-melanoma-and-matched-metastases-and-relationship-with-overall-survival
#9
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
#10
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/27918105/resveratrol-inhibits-proliferation-invasion-and-epithelial-mesenchymal-transition-by-increasing-mir-200c-expression-in-hct-116-colorectal-cancer-cells
#11
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
https://www.readbyqxmd.com/read/27917905/establishment-of-a-gastric-cancer-subline-with-high-metastatic-potential-using-a-novel-microfluidic-system
#12
Zhe-Zhou Chen, Wan-Ming Li, Yu Zhang, Min Yu, Lian-Feng Shan, De-Zheng Yuan, Fu-Rong Liu, Jin Fang
Metastasis is an important hallmark of malignant tumors. In this study, we developed a microfluidic system to screen highly metastatic sublines via differential resolution of cell invasiveness. The system was composed of a PDMS-glass device connected with a syringe pump and a Petri dish. To facilitate the selection process, a long-term cell invasion driving force based on a chemotactic factor gradient was created using the Petri dish-based liquid supply pattern, and the invasive cells were collected for round-by-round selection via an open region in the chip...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917007/roles-of-ras-homolog-a-in-invasive-ductal-breast-carcinoma
#13
Eriko Murakami, Yoko Nakanishi, Yukari Hirotani, Sumie Ohni, Xiaoyan Tang, Shinobu Masuda, Katsuhisa Enomoto, Kenichi Sakurai, Sadao Amano, Tsutomu Yamada, Norimichi Nemoto
Breast cancer has a poor prognosis owing to tumor cell invasion and metastasis. Although Ras homolog (Rho) A is involved in tumor cell invasion, its role in breast carcinoma is unclear. Here, RhoA expression was examined in invasive ductal carcinoma (IDC), with a focus on its relationships with epidermal-mesenchymal transition (EMT) and collective cell invasion. Forty-four surgical IDC tissue samples and two normal breast tissue samples were obtained. RhoA, E-cadherin, vimentin, and F-actin protein expression were analyzed by immunohistochemistry...
November 1, 2016: Acta Histochemica et Cytochemica
https://www.readbyqxmd.com/read/27916907/metformin-inhibits-tgf-%C3%AE-1-induced-epithelial-to-mesenchymal-transition-via-pkm2-relative-mtor-p70s6k-signaling-pathway-in-cervical-carcinoma-cells
#14
Keyan Cheng, Min Hao
BACKGROUND: Epithelial-to-mesenchymal transition (EMT) plays a prominent role in tumorigenesis. Metformin exerts antitumorigenic effects in various cancers. This study investigated the mechanisms of metformin in TGF-β1-induced Epithelial-to-mesenchymal transition (EMT) in cervical carcinoma cells. METHODS: cells were cultured with 10 ng/mL TGF-β1 to induce EMT and treated with or without metformin. Cell viability was evaluated by CCK-8 (Cell Counting Kit 8, CCK-8) assay; apoptosis were analyzed by flow cytometry; cell migration was evaluated by wound-healing assay...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916760/interleukin-17a-induced-epithelial-mesenchymal-transition-of-human-intrahepatic-biliary-epithelial-cells-implications-for-primary-biliary-cirrhosis
#15
Qingshui Huang, Shuai Chu, Xiaofeng Yin, Xiaobin Yu, Chunmin Kang, Xin Li, Yurong Qiu
Primary biliary cirrhosis (PBC) is an autoimmune chronic liver disease with worldwide increasing morbidity. However, the etiology of PBC is still unclear. Recently, the epithelial-mesenchymal transition (EMT) and interleukin-17A (IL-17A), a pro-inflammatory cytokine, were proposed to be involved in the pathogenesis of PBC. Therefore, in this study, we aimed to clarify the roles of IL-17A and/or EMT in the onset of PBC. The results showed that the median serum IL-17A level was significantly higher in 29 PBC patients (average course of 40...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27916629/chitosan-nanoparticles-as-a-dual-drug-sirna-delivery-system-for-treatment-of-colorectal-cancer
#16
Sanam Sadreddini, Reza Safaralizadeh, Behzad Baradaran, Leili Aghebati-Maleki, Mohammad Ali Hosseinpour-Feizi, Dariush Shanehbandi, Farhad Jadidi-Niaragh, Sevil Sadreddini, Hossein Samadi Kafil, Vahid Younesi, Mehdi Yousefi
Nanoparticles are widely used to deliver anticancer drugs and inhibit tumor growth without systemic toxicity. Recently, chitosan has received much attention as a functional biopolymer for encapsulation of small interfering RNA (siRNA). Because of cationic nature, chitosan efficiently encapsulate siRNA and forming nanoparticles. Moreover, biocompatible and biodegradable properties represent chitosan as potential candidate for in vivo siRNA delivery. In the present study we designed carboxymethyl dextran (CMD) chitosan nanoparticles (ChNPs) to encapsulat snail siRNA and anticancer drug doxorubicin (DOX)...
December 1, 2016: Immunology Letters
https://www.readbyqxmd.com/read/27916451/progressive-development-of-endometriosis-and-its-hindrance-by-anti-platelet-treatment-in-mice-with-induced-endometriosis
#17
Qi Zhang, Xishi Liu, Sun-Wei Guo
We have recently shown that platelets drive smooth muscle metaplasia (SMM) and fibrogenesis in endometriosis through epithelial-mesenchymal transition (EMT) and fibroblast-to-myofibroblast transdifferentiation (FMT). To see whether this is true in vivo, this prospective, randomized, and serially evaluated mouse investigation was conducted. Endometriosis was induced in female Balb/C mice, which were then randomly divided into two groups: Tanshinone IIA (TAN) and control (CTL) groups. TAN mice were treated with TAN but CTL mice received none...
November 21, 2016: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/27916037/-relationship-and-clinicopathological-significance-of-numb-and-epithelial-mesenchymal-transition-related-proteins-in-human-pancreatic-cancer
#18
W W Sheng, M Dong, Z R Liu, Y J Li, J P Zhou, Q Dong
Objective: To study the relationship and clinicopathological significance of Numb and epithelial-mesenchymal transition related proteins in human pancreatic cancer(PC). Methods: Sixty-three cases of pancreatic cancer tissues were obtained from department of gastrointestinal surgery in the First Hospital of China Medical University from January 2005 to December 2012, all samples were histopathologically proved to be adenocarcinoma. The expressions of Numb, E-cadherin and Vimentin proteins in 63 cases of pancreatic cancer specimens were detected by immunohistochemistry...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27915472/pathomechanism-of-interstitial-cystitis-bladder-pain-syndrome-and-mapping-the-heterogeneity-of-disease
#19
REVIEW
Jia-Fong Jhang, Hann-Chorng Kuo
Interstitial cystitis/bladder pain syndrome (IC/BPS) is a heterogeneous syndrome which is usually characterized by urinary frequency, nocturia, and bladder pain. Several pathomechanisms have been proposed, including uroepithelial dysfunction, mast cell activation, neurogenic inflammation, autoimmunity, and occult urinary tract infections. It is possible that an inflammatory process alters regulation of urothelial homeostasis and results in dysfunction of the bladder epithelium. Different phenotypes of IC/BPS have been explored including Hunner and non-Hunner type IC, hypersensitive bladder, and bladder pain both with and without functional somatic syndrome...
November 2016: International Neurourology Journal
https://www.readbyqxmd.com/read/27915333/prss8-is-downregulated-and-suppresses-tumour-growth-and-metastases-in-hepatocellular-carcinoma
#20
Li Zhang, Guozhan Jia, Binya Shi, Guanqun Ge, Hongbin Duan, Yunsheng Yang
BACKGROUND: Protease serine 8 (PRSS8), a trypsin-like serine peptidase, has been shown to function as a tumour suppressor in various malignancies. The present study aimed to investigate the expression pattern, prognostic value and the biological role of PRSS8 in human hepatocellular carcinoma (HCC). METHODS: PRSS8 expression in 106 HCC surgical specimens was examined by Real-time polymerase chain reaction (PCR) and immunohistochemistry, and its clinical significance was analysed...
December 5, 2016: Cellular Physiology and Biochemistry
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