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Epithelial mesenchymal transition

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https://www.readbyqxmd.com/read/28087712/pdx1-dynamically-regulates-pancreatic-ductal-adenocarcinoma-initiation-and-maintenance
#1
Nilotpal Roy, Kenneth K Takeuchi, Jeanine M Ruggeri, Peter Bailey, David Chang, Joey Li, Laura Leonhardt, Sapna Puri, Megan T Hoffman, Shan Gao, Christopher J Halbrook, Yan Song, Mats Ljungman, Shivani Malik, Christopher V E Wright, David W Dawson, Andrew V Biankin, Matthias Hebrok, Howard C Crawford
Aberrant activation of embryonic signaling pathways is frequent in pancreatic ductal adenocarcinoma (PDA), making developmental regulators therapeutically attractive. Here we demonstrate diverse functions for pancreatic and duodenal homeobox 1 (PDX1), a transcription factor indispensable for pancreas development, in the progression from normal exocrine cells to metastatic PDA. We identify a critical role for PDX1 in maintaining acinar cell identity, thus resisting the formation of pancreatic intraepithelial neoplasia (PanIN)-derived PDA...
December 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/28087626/snail2-and-zeb2-repress-p-cadherin-to-define-embryonic-territories-in-the-chick-embryo
#2
Hervé Acloque, Oscar H Ocaña, Diana Abad, Claudio D Stern, M Angela Nieto
Snail and Zeb transcription factors induce epithelial to mesenchymal transition (EMT) in embryonic and adult tissues by direct repression of E-Cadherin transcription. The repression of E-Cadherin transcription by the EMT inducers Snail1 and Zeb2 plays a fundamental role in defining embryonic territories in the mouse, as E-Cadherin needs to be downregulated in the primitive streak and in the epiblast concomitant with the formation of mesendodermal precursors and the neural plate, respectively. Here we show that in the chick embryo, E-Cadherin is weakly expressed in the epiblast at pre-primitive streak stages where it is substituted by P-Cadherin We also show that Snail2 and Zeb2 repress P-Cadherin transcription in the primitive streak and the neural plate, respectively...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28081466/long-non-coding-rna-zfas1-is-an-unfavourable-prognostic-factor-and-promotes-glioma-cell-progression-by-activation-of-the-notch-signaling-pathway
#3
Kai Gao, Zhiwu Ji, Kun She, Qingyan Yang, Lianbin Shao
Survival of patients with glioma remains poor, which is largely attributed to active carcinogenesis. Accumulating evidence indicates that long non-coding RNAs (lncRNAs) play key roles in tumor initiation and progression. However, the function of lncRNA ZFAS1 in glioma is still unclear. In the current study, we found that ZFAS1 was upregulated in glioma tissues and cell lines. High ZFAS1 expression in glioma tissues was significantly correlated with advanced tumor stage and poor overall survival. Furthermore, in vitro assays demonstrated that ZFAS1 inhibition significantly suppressed glioma cell proliferation, migration and invasion...
January 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28081224/resveratrol-impairs-glioma-stem-cells-proliferation-and-motility-by-modulating-the-wnt-signaling-pathway
#4
Chiara Cilibrasi, Gabriele Riva, Gabriele Romano, Massimiliano Cadamuro, Riccardo Bazzoni, Valentina Butta, Laura Paoletta, Leda Dalprà, Mario Strazzabosco, Marialuisa Lavitrano, Roberto Giovannoni, Angela Bentivegna
Glioblastoma multiforme (GBM) is a grade IV astrocytoma and the most common form of malignant brain tumor in adults. GBM remains one of the most fatal and least successfully treated solid tumors: current therapies provide a median survival of 12-15 months after diagnosis, due to the high recurrence rate. Glioma Stem Cells (GSCs) are believed to be the real driving force of tumor initiation, progression and relapse. Therefore, better therapeutic strategies GSCs-targeted are needed. Resveratrol is a polyphenolic phytoalexin found in fruits and vegetables displaying pleiotropic health benefits...
2017: PloS One
https://www.readbyqxmd.com/read/28079609/mesenchymal-stem-cells-induce-epithelial-mesenchymal-transition-in-melanoma-by-paracrine-secretion-of-transforming-growth-factor-%C3%AE
#5
Chuan Lv, Haiying Dai, Mengyan Sun, Hui Zhao, Kai Wu, Ji Zhu, Yuchong Wang, Xian Cao, Zhaofan Xia, Chunyu Xue
Mesenchymal stem cells (MSCs) are considered for potential use as an ideal vehicle to efficiently deliver therapeutic agents in treatment against cancers including melanoma. However, emerging evidence indicates that MSCs promote tumor growth and progression. Therefore, a comprehensive understanding of the role of MSCs is very important to evaluate the MSCs-based therapy in melanoma. B16 melanoma cells treated by MSC conditioned medium (CM), showed significantly enhanced migration and invasion, which was also confirmed in a lung metastasis mice model in vivo...
January 5, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28079253/epithelial-mesenchymal-transition-emt-a-biological-process-in-the-development-stem-cell-differentiation-and-tumorigenesis
#6
REVIEW
Tong Chen, Yanan You, Hua Jiang, Zack Z Wang
The lineage transition between epithelium and mesenchyme is a process known as epithelial-mesenchymal transition (EMT), by which polarized epithelial cells lose their adhesion property and obtain mesenchymal cell phenotypes. EMT is a biological process that is often involved in embryogenesis and diseases, such as cancer invasion and metastasis. The EMT and the reverse process, mesenchymal-epithelial transition (MET), also play important roles in stem cell differentiation and de-differentiation (or reprogramming)...
January 12, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28079159/socs1-favors-the-epithelial-mesenchymal-transition-in-melanoma-promotes-tumor-progression-and-prevents-antitumor-immunity-by-pd-l1-expression
#7
R Berzaghi, V S C Maia, F V Pereira, F M Melo, M S Guedes, C S T Origassa, J B Scutti, A L Matsuo, N O S Câmara, E G Rodrigues, L R Travassos
Silencing of SOCS1 protein with shRNAi lentivirus (shR-SOCS1) led to partial reversion of the tumorigenic phenotype of B16F10-Nex2 melanoma cells. SOCS1 silencing inhibited cell migration and invasion as well as in vitro growth by cell cycle arrest at S phase with increased cell size and nuclei. Down-regulation of SOCS1 decreased the expression of epidermal growth factor receptor, Ins-Rα, and fibroblast growth factor receptors. The present work aimed at analyzing the SOCS1 cell signaling and expression of proteins relevant to tumor development...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078601/inhibition-of-epithelial-mesenchymal-transition-and-metastasis-by-combined-tgfbeta-knockdown-and-metformin-treatment-in-a-canine-mammary-cancer-xenograft-model
#8
Camila Leonel, Thaiz Ferraz Borin, Lívia de Carvalho Ferreira, Marina Gobbe Moschetta, Marcio Chaim Bajgelman, Alicia M Viloria-Petit, Debora Aparecida Pires de Campos Zuccari
Epithelial mesenchymal transition (EMT) is a process by which epithelial cells acquire mesenchymal properties, generating metastases. Transforming growth factor beta (TGF-β) is associated with this malignancy by having the ability to induce EMT. Metformin, has been shown to inhibit EMT in breast cancer cells. Based on this evidence we hypothesize that treatment with metformin and the silencing of TGF-β, inhibits the EMT in cancer cells. Canine metastatic mammary tumor cell line CF41 was stably transduced with a shRNA-lentivirus, reducing expression level of TGF-β1...
January 11, 2017: Journal of Mammary Gland Biology and Neoplasia
https://www.readbyqxmd.com/read/28077929/hnrnpa2b1-regulates-the-epithelial-mesenchymal-transition-in-pancreatic-cancer-cells-through-the-erk-snail-signalling-pathway
#9
Shengjie Dai, Jie Zhang, Shihao Huang, Bin Lou, Binbo Fang, Tingting Ye, Xince Huang, Bicheng Chen, Mengtao Zhou
BACKGROUND: Heterogeneous nuclear ribonucleoprotein A2B1 (HNRNPA2B1) is closely related to tumour occurrence and development, oncogene expression, apoptosis inhibition and invasion and metastasis capacities. However, its function in the epithelial-mesenchymal transition (EMT) of pancreatic cancer is not fully understood. METHODS: By comparing various wild-type pancreatic cancer cell lines, we determined which have a higher expression level of HNRNPA2B1 accompanied by the higher expression of N-cadherin and vimentin and lower expression of E-cadherin...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28077595/long-non-coding-rna-linc00152-promotes-gallbladder-cancer-metastasis-and-epithelial-mesenchymal-transition-by-regulating-hif-1%C3%AE-via-mir-138
#10
Qiang Cai, Zhenqiang Wang, Shouhua Wang, Mingzhe Weng, Di Zhou, Chen Li, Jiandong Wang, Erzhen Chen, Zhiwei Quan
Long non-coding RNA LINC00152 had been reported as an oncogene in gastric and hepatocellular cancer. In this study, we show that LINC00152 is overexpressed in gallbladder cancer (GBC) tissue samples and cell lines. The high LINC00152 levels correlated negatively with the overall survival time in GBC patients. Functionally, LINC00152 dramatically promoted cell migration, invasion and epithelial-mesenchymal transition (EMT) progression in vitro. In vivo, LINC00152 overexpression significantly promoted tumour peritoneal spreading and metastasis...
January 2017: Open Biology
https://www.readbyqxmd.com/read/28077319/role-of-insulin-like-growth-factor-axis-in-the-bleomycin-induced-lung-injury-in-rats
#11
Lakshmi Kanth Kotarkonda, Ritu Kulshrestha, Krishnan Ravi
BACKGROUND: Alveolar epithelial cell injury has been proposed as a causative factor for the onset and progression ofpulmonary fibrosis. However, the role of type II alveolar epithelial cells (AECs) in the epithelial mesenchymal transition (EMT) is controversial. AIMS: The present study performed in rats instilled with bleomycin investigated a) the expressions of the insulin growth factor (IGF-1) and insulin growth factor binding protein 5 (IGFBP-5) and transforming growth factor (TGF-β1) in the type II AECs, b) the role oftype II AECs in EMT andextracellular matrix (ECM) formation and, c) the effect of pioglitazone on all the above parameters...
January 7, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28077118/malat1-promoted-invasiveness-of-gastric-adenocarcinoma
#12
Na Keum Lee, Jung Hwa Lee, Cristina Ivan, Hui Ling, Xinna Zhang, Chan Hyuk Park, George A Calin, Sang Kil Lee
BACKGROUND: Gastric cancer is the second leading cause of cancer globally, and the mechanism of its pathogenesis is still largely unknown. Recently, non-coding RNAs have been recognized to promote metastasis in various cancers, including gastric cancer. METHODS: We found that metastasis associated lung adenocarcinoma transcript-1 (MALAT1) is upregulated in gastric cancer tissue compared to adjacent normal tissue, as determined by microarray and subsequent qRT-PCR, then investigated the impact of MALAT1 on apoptosis, cell proliferation, and the cell cycle to dissect the carcinogenesis of gastric cancer, and examined mechanisms of invasion and metastasis...
January 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28076843/pax-5-is-a-potent-regulator-of-e-cadherin-and-breast-cancer-malignant-processes
#13
Sami Benzina, Annie-Pier Beauregard, Roxann Guerrette, Stéphanie Jean, Mame Daro Faye, Mark Laflamme, Emmanuel Maïcas, Nicolas Crapoulet, Rodney J Ouellette, Gilles A Robichaud
Pax-5, an essential transcription factor for B lymphocyte development, has been linked with the development and progression of lymphoid cancers and carcinoma. In contrast to B-cell cancer lesions, the specific expression signatures and roles of Pax-5 in breast cancer progression are relatively unknown. In the present study, we set out to profile Pax-5 expression in mammary tissues and elucidate the cellular and molecular roles of Pax-5 in breast cancer processes. Using immunohistology on mammary tissue arrays, Pax-5 was detected in a total of 298/306 (97...
January 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28076840/hif-1%C3%AE-induces-the-epithelial-mesenchymal-transition-in-gastric-cancer-stem-cells-through-the-snail-pathway
#14
Shi-Wei Yang, Zhi-Gang Zhang, Ying-Xue Hao, Yong-Liang Zhao, Feng Qian, Yan Shi, Ping-Ang Li, Chun-Yang Liu, Pei-Wu Yu
Substantial evidence suggests that the epithelial-mesenchymal transition (EMT) phenotype is associated with the invasive characteristics of cancer stem cells (CSCs),which possess an EMT phenotype that may predominate in tumor invasion and metastasis. However, the mechanisms for the generation and regulation of these CSCs have not been clearly defined. As hypoxia and EMT-related factors may have important functions in EMT-like CSCs, the aim of this study was to investigate the effects of hypoxia on these cells...
January 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28076331/a-short-term-intervention-with-selenium-affects-expression-of-genes-implicated-in-the-epithelial-to-mesenchymal-transition-in-the-prostate
#15
Dieuwertje E G Kok, Lambertus A L M Kiemeney, Gerald W Verhaegh, Jack A Schalken, Emile N J T van Lin, J P Michiel Sedelaar, J Alfred Witjes, Christina A Hulsbergen-van de Kaa, Pieter Van't Veer, Ellen Kampman, Lydia A Afman
In parallel with the inconsistency in observational studies and chemoprevention trials, the mechanisms by which selenium affects prostate cancer risk have not been elucidated. We conducted a randomized, placebo-controlled trial to examine the effects of a short-term intervention with selenium on gene expression in non-malignant prostate tissue. Twenty-three men received 300 µg selenium per day in the form of selenized yeast (n=12) or a placebo (n=11) during 5 weeks. Prostate biopsies collected from the transition zone before and after intervention were analysed for 15 participants (n=8 selenium, n=7 placebo)...
January 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28075478/high-expression-of-rab43-predicts-poor-prognosis-and-is-associated-with-epithelial-mesenchymal-transition-in-gliomas
#16
Ming-Zhi Han, Bin Huang, An-Jing Chen, Xin Zhang, Ran Xu, Jian Wang, Xin-Gang Li
The Ras-related GTP-binding protein (RAB) family plays an important role in regulating signal transduction and cellular processes including vesicle transport, cytoskeleton formation and membrane trafficking. More recently, several RAB members have been reported to promote tumorigenesis in many types of cancers. However, the clinical significance and potential function of RAB43 in gliomas remain unclear. Herein, we found that RAB43 was upregulated and positively correlated with the grade of progression in glioma patients by in silico analysis and immunohistochemistry (IHC)...
January 3, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28075476/silencing-of-gp73-inhibits-invasion-and-metastasis-via-suppression-of-epithelial-mesenchymal-transition-in-hepatocellular-carcinoma
#17
Ying Yang, Qiang Liu, Hua Zhang, Huarong Zhao, Ruin Mao, Zhipeng Li, Sha Ya, Chunli Jia, Yongxing Bao
Epithelial-mesenchymal transition (EMT) is associated with invasion and metastasis of cancer cells. Golgi protein 73 (GP73) is a serum biomarker for hepatocellular carcinoma (HCC) and our previous study demonstrated that the expression of GP73 correlated with aggressive behavior and EMT molecules in HCC. However, its role in metastatic mechanism of HCC is not clear. The aim of this study was to investigate the effect of GP73 on invasion and migration, and underlying mechanism of GP73 involved in EMT of HCC...
January 4, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28075475/mir-134-suppresses-the-migration-and-invasion-of-non%C3%A2-small-cell-lung-cancer-by-targeting-itgb1
#18
Qin Qin, Furong Wei, Jianbo Zhang, Baosheng Li
Most cancer-related deaths are caused by the development of metastatic disease. Thus, investigation of the underlying mechanisms of metastasis is urgent to design more effective targeted drugs and to treat metastatic disease more effectively. MicroRNAs (miRNAs) have emerged as potential targets for cancer treatment. In the present study, we aimed to identify the roles of miR-134 in non-small cell lung cancer (NSCLC) cell migration and invasion. We demonstrated that overexpression of miR-134 inhibited migration and invasion of A549 and H1299 cells...
January 3, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28075456/hpip-silencing-inhibits-tgf-%C3%AE-1-induced-emt-in-lung-cancer-cells
#19
Shaomin Shi, Jianjun Zhao, Jing Wang, Donghui Mi, Zhongsen Ma
Epithelial-mesenchymal transition (EMT) has been reported to play an important role in the migration and invasion of tumor cells. Hematopoietic pre-B-cell leukemia transcription factor (PBX)-interacting protein (HPIP/PBXIP1) has emerged as an important regulator of the development of cancer. However, the role of HPIP in lung cancer is unclear. Thus, in the present study, we investigated the role of HPIP in transforming growth factor (TGF)-β1-induced EMT in A549 lung cancer cells in vitro. Our data demonstrated that HPIP was overexpressed in the lung cancer cell lines...
January 5, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28075454/expression-of-glia-maturation-factor-%C3%AE-is-associated-with-colorectal-cancer-metastasis-and-its-downregulation-suppresses-colorectal-cancer-cell-migration-and-invasion-in-vitro
#20
Huili Wang, Zhijiang Chen, Hongen Chang, Xiaoping Mu, Wenyu Deng, Zhaohu Yuan, Fang Yao, Yan Liu, Rongjia Mai, Bingyi Wu
Glia maturation factor γ (GMFG) functions to reorganize the actin cytoskeleton and appears to play a causative role in cell migration and adherence. The present study assessed GMFG expression in colorectal cancer cells and tissue specimens and then explored the role of GMFG in colorectal cancer progression in vitro. GMFG protein was highly expressed in colorectal cancer tissues and a metastatic colon cancer cell line. Knockdown of GMFG expression using GMFG siRNA or anti-GMFG antibody decreased the capacity of colon cancer LoVo cell migration and invasion in vitro, while recombinant GMFG treatment induced LoVo cell migration...
January 9, 2017: Oncology Reports
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