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Epithelial mesenchymal transformation

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https://www.readbyqxmd.com/read/28088441/resveratrol-limits-epithelial-to-mesenchymal-transition-through-modulation-of-khsrp-hnrnpa1-dependent-alternative-splicing-in-mammary-gland-cells
#1
Arfa Moshiri, Margherita Puppo, Martina Rossi, Roberto Gherzi, Paola Briata
Resveratrol (RESV) is a natural polyphenolic compound endowed with anti-inflammatory, anti-proliferative, as well as pro-apoptotic activities that make it a potential anti-tumor compound. Here we show that RESV counteracts the TGF-β-induced Epithelial to Mesenchymal Transition (EMT) phenotype in mammary gland cells and affects the alternative exon usage of pre-mRNAs that encode crucial factors in adhesion and migration -including CD44, ENAH, and FGFR2- in a panel of immortalized and transformed mammary gland cells...
January 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28087712/pdx1-dynamically-regulates-pancreatic-ductal-adenocarcinoma-initiation-and-maintenance
#2
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/28079609/mesenchymal-stem-cells-induce-epithelial-mesenchymal-transition-in-melanoma-by-paracrine-secretion-of-transforming-growth-factor-%C3%AE
#3
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/28078601/inhibition-of-epithelial-mesenchymal-transition-and-metastasis-by-combined-tgfbeta-knockdown-and-metformin-treatment-in-a-canine-mammary-cancer-xenograft-model
#4
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/28077319/role-of-insulin-like-growth-factor-axis-in-the-bleomycin-induced-lung-injury-in-rats
#5
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/28075456/hpip-silencing-inhibits-tgf-%C3%AE-1-induced-emt-in-lung-cancer-cells
#6
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/28075173/tgf%C3%AE-1-induced-lncrna-uca1-upregulation-promotes-gastric-cancer-invasion-and-migration
#7
Zhong-Kun Zuo, Yi Gong, Xiang-Heng Chen, Fei Ye, Zheng-Ming Yin, Qian-Ni Gong, Jiang-Sheng Huang
According to recent studies, long noncoding RNA urothelial carcinoma associated 1 (UCA1) is involved in the development and progression of many malignant tumors, including gastric cancer (GC). We validated the detailed role of UCA1 in human GC cell lines and GC tissues so as to determine its exact function and the underlying mechanism of GC invasion and migration. In our research, lncRNA-UCA1 was specifically upregulated in GC tissues and cell lines, and augmented GC cell proliferation, and invasive and migratory capabilities...
January 11, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28067907/grhl2-reduces-invasion-and-migration-through-inhibition-of-tgf%C3%AE-induced-emt-in-gastric-cancer
#8
J Xiang, X Fu, W Ran, Z Wang
Metastasis is one of the typical features of malignancy that significantly increases cancer-related mortality. Recent studies have shown that epithelial-mesenchymal transition (EMT) is closely related to the invasion and migration of cancer cells. Grainyhead-like 2 (Grhl2), a transcription factor, has been reported to be associated with several tumor processes including EMT. In the previous study, we have reported that Grhl2 functioned as a tumor suppressor in proliferation and apoptosis of gastric cancer. Here we aim to explore the effects of Grhl2 on invasion and migration of gastric cancer and further clarify its possible underlying mechanisms...
January 9, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28065656/apt2-inhibition-restores-scribble-localization-and-s-palmitoylation-in-snail-transformed-cells
#9
Jeannie L Hernandez, Dahvid Davda, Melanie Cheung See Kit, Jaimeen D Majmudar, Sang Joon Won, Margery Gang, Sirisha C Pasupuleti, Alexandria I Choi, Callie M Bartkowiak, Brent R Martin
The multidomain scaffolding protein Scribble (Scrib) organizes key signaling complexes to specify basolateral cell polarity and suppress aberrant growth. In many human cancers, genetically normal Scrib mislocalizes from cell-cell junctions to the cytosol, correlating with enhanced growth signaling and malignancy. Here we confirm that expression of the epithelial-to-mesenchymal transcription factor (EMT-TF) Snail in benign epithelial cells leads to Scrib displacement from the plasma membrane, mimicking the mislocalization observed in aggressive cancers...
January 4, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28065642/mesenchymal-to-epithelial-transition-mediated-by-cdh1-promotes-spontaneous-reprogramming-of-male-germline-stem-cells-to-pluripotency
#10
Junhui An, Yu Zheng, Christina Tenenhaus Dann
Cultured spermatogonial stem cells (GSCs) can spontaneously form pluripotent cells in certain culture conditions. However, GSC reprogramming is a rare event that is largely unexplained. We show GSCs have high expression of mesenchymal to epithelial transition (MET) suppressors resulting in a developmental barrier inhibiting GSC reprogramming. Either increasing OCT4 or repressing transforming growth factor β (TGF-β) signaling promotes GSC reprogramming by upregulating CDH1 and boosting MET. Reducing ZEB1 also enhances GSC reprogramming through its direct effect on CDH1...
December 24, 2016: Stem Cell Reports
https://www.readbyqxmd.com/read/28062213/anti-fibrotic-effects-of-bone-morphogenetic-protein-7-modified-bone-marrow-mesenchymal-stem-cells-on-silica-induced-pulmonary-fibrosis
#11
Xiaoli Li, Guoliang An, Yan Wang, Di Liang, Zhonghui Zhu, Ximeng Lian, Piye Niu, Caixia Guo, Lin Tian
Silicosis is an occupational lung disease caused by exposure to small particles of crystalline silica, which ultimately results in diffuse pulmonary fibrosis. Evidence indicates an anti-fibrotic role of bone morphogenetic protein-7 (BMP-7) and bone marrow mesenchymal stem cells (BMSCs) in lung diseases. Therefore, strategies incorporating genetic engineering and stem cell biology might have a tremendous potential to treat critical injuries and diseases. Therefore, we modified BMSCs to overexpress the BMP-7 gene (BMP-7-BMSCs) by lentivirus transduction, and then evaluated whether fibrotic processes were inhibited by these cells in vivo...
January 4, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28043914/bay-1143269-a-novel-mnk1-inhibitor-targets-oncogenic-protein-expression-and-shows-potent-anti-tumor-activity
#12
Susann Santag, Franziska Siegel, Antje M Wengner, Claudia Lange, Ulf Bömer, Knut Eis, Florian Pühler, Philip Lienau, Linda Bergemann, Martin Michels, Franz von Nussbaum, Dominik Mumberg, Kirstin Petersen
The initiation of mRNA translation has received increasing attention as an attractive target for cancer treatment in the recent years. The oncogenic eukaryotic translation initiation factor 4E (eIF4E) is the major substrate of MAP kinase-interacting kinase 1 (MNK1), and it is located at the junction of the cancer-associated PI3K and MAPK pathways. The fact that MNK1 is linked to cell transformation and tumorigenesis renders the kinase a promising target for cancer therapy. We identified a novel small molecule MNK1 inhibitor, BAY 1143269, by high-throughput screening and lead optimization...
December 31, 2016: Cancer Letters
https://www.readbyqxmd.com/read/28042775/inhibition-of-epithelial-mesenchymal-transition-in-response-to-treatment-with-metformin-and-y27632-in-breast-cancer-cell-lines
#13
Camila Leonel, Lívia Carvalho Ferreira, Thaiz Ferraz Borin, Marina Gobbe Moschetta, Gabriela Scavacini Freitas, Michel Raineri Haddad, João Antonio de Camargos Pinto Robles, Debora Aparecida Pires de Campos Zuccari
BACKGROUND: ROCK-1 expression is associated with the malignant character of tumors, while inhibiting this molecule results in a significant suppression of tumor metastasis. Likewise, transforming growth factor beta (TGF-β) is associated with this malignancy by having the ability to induce epithelial-mesenchymal transition (EMT). Metformin, a drug used in the treatment of diabetes, has previously been shown to inhibit EMT in breast cancer cells. OBJECTIVE: The aim of this study is to evaluate the TGF-β1 action model for induction of EMT and the action of metformin and ROCK-1 inhibitor (Y27632) in EMT process in breast cancer cell lines...
January 2, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28042023/diverse-pathways-of-epithelial-mesenchymal-transition-related-with-cancer-progression-and-metastasis-and-potential-effects-of-endocrine-disrupting-chemicals-on-epithelial-mesenchymal-transition-process
#14
Hae-Miru Lee, Kyung-A Hwang, Kyung-Chul Choi
Endocrine disrupting chemicals (EDCs) are natural or synthetic compounds that interfere with normal functions of natural hormones in the body, leading to a disruption of the endocrine system. Specifically, EDCs have the potential to cause formation of several hormone-dependent cancers, including breast, ovarian, and prostate cancers. Epithelial mesenchymal transition (EMT) process by which epithelial cells lose their cell polarity and cell-cell adhesion and acquire mesenchymal phenotype is closely associated with malignant transformation and the initiation of cancer metastasis...
December 29, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28041981/maternal-exposure-to-fine-particulate-air-pollution-induces-epithelial-to-mesenchymal-transition-resulting-in-postnatal-pulmonary-dysfunction-mediated-by-transforming-growth-factor-%C3%AE-smad3-signaling
#15
Wenting Tang, Lili Du, Wen Sun, Zhiqiang Yu, Fang He, Jingsi Chen, Xiaomei Li, Xiuying Li, Lin Yu, Dunjin Chen
Fine particles from air pollution, also called particulate matter, less than 2.5 micrometers in diameter (PM2.5), are a threat to child health. Epidemiological investigations have related maternal exposure to PM2.5 to postnatal respiratory symptoms, such as frequent wheezing, chronic cough, and lung function decrements. However, only few experimental animal studies have been performed to study the effects of PM2.5.The aim of this study was to investigate the effects of maternal exposure to PM2.5 on postnatal pulmonary dysfunction in a rat model and to examine the mechanism of PM2...
December 29, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/28035402/transforming-growth-factor-%C3%AE-1-suppresses-bone-morphogenetic-protein-2-induced-mesenchymal-epithelial-transition-in-hsc-4-human-oral-squamous-cell-carcinoma-cells-via-smad1-5-9-pathway-suppression
#16
Takahiro Chiba, Akira Ishisaki, Seiko Kyakumoto, Toshiyuki Shibata, Hiroyuki Yamada, Masaharu Kamo
Squamous cell carcinoma is the most common cancer in the oral cavity. We previously demonstrated that transforming growth factor-β1 (TGF-β1) promotes the epithelial-mesenchymal transition (EMT) of human oral squamous cell carcinoma (hOSCC) cells; however, it remains to be clarified whether the TGF-β superfamily member bone morphogenetic protein (BMP) affects this process in hOSCC cells. Here, we examined the independent and collective effects of TGF-β1 and BMP-2 on EMT and mesenchymal‑epithelial transition (MET) in a panel of four hOSCC cell lines...
December 28, 2016: Oncology Reports
https://www.readbyqxmd.com/read/28035069/pdgf-d-promotes-cell-growth-aggressiveness-angiogenesis-and-emt-transformation-of-colorectal-cancer-by-activation-of-notch1-twist1-pathway
#17
Jinhuang Chen, Wenzheng Yuan, Liang Wu, Qiang Tang, Qinghua Xia, Jintong Ji, Zhengyi Liu, Zhijun Ma, Zili Zhou, Yifeng Cheng, Xiaogang Shu
Platelet-derived growth factor-D (PDGF-D) plays a crucial role in the progression of several cancers. However, its role in colorectal cancer (CRC) remains unclear. Our study showed that PDGF-D was highly expressed in CRC tissues and was positively associated with the clinicopathological features. Down-regulation of PDGF-D inhibited the tumor growth, migration and angiogenesis of SW480 cells in vitro and in vivo. Whereas up-regulation of PDGF-D promoted the malignant behaviors of HCT116 cells. Moreover, PDGF-D up-regulated the expression of Notch1 and Twist1 in CRC cells...
December 27, 2016: Oncotarget
https://www.readbyqxmd.com/read/28030842/loss-of-runx3-expression-inhibits-bone-invasion-of-oral-squamous-cell-carcinoma
#18
Junhee Park, Hyun-Jeong Kim, Ki Rim Kim, Sun Kyoung Lee, Hyungkeun Kim, Kwang-Kyun Park, Won-Yoon Chung
High recurrence and lower survival rates in patients with oral squamous cell carcinoma (OSCC) are associated with its bone invasion. We identified the oncogenic role of RUNX3 during bone invasion by OSCC. Tumor growth and the generation of osteolytic lesions were significantly inhibited in mice that were subcutaneously inoculated with RUNX3-knockdown human OSCC cells. RUNX3 knockdown enhanced TGF-β-induced growth arrest and inhibited OSCC cell migration and invasion in the absence or presence of transforming growth factor-β (TGF-β), a major growth factor abundant in the bone microenvironment...
December 21, 2016: Oncotarget
https://www.readbyqxmd.com/read/28027307/population-heterogeneity-in-the-epithelial-to-mesenchymal-transition-is-controlled-by-nfat-and-phosphorylated-sp1
#19
Russell Gould, David M Bassen, Anirikh Chakrabarti, Jeffrey D Varner, Jonathan Butcher
Epithelial to mesenchymal transition (EMT) is an essential differentiation program during tissue morphogenesis and remodeling. EMT is induced by soluble transforming growth factor β (TGF-β) family members, and restricted by vascular endothelial growth factor family members. While many downstream molecular regulators of EMT have been identified, these have been largely evaluated individually without considering potential crosstalk. In this study, we created an ensemble of dynamic mathematical models describing TGF-β induced EMT to better understand the operational hierarchy of this complex molecular program...
December 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/28018099/understanding-the-role-of-pin1-in-hepatocellular-carcinoma
#20
REVIEW
Chi-Wai Cheng, Ka-Wai Leong, Eric Tse
PIN1 is a peptidyl-prolyl cis/trans isomerase that binds and catalyses isomerization of the specific motif comprising a phosphorylated serine or threonine residue preceding a proline (pSer/Thr-Pro) in proteins. PIN1 can therefore induce conformational and functional changes of its interacting proteins that are regulated by proline-directed serine/threonine phosphorylation. Through this phosphorylation-dependent prolyl isomerization, PIN1 fine-tunes the functions of key phosphoproteins (e.g., cyclin D1, survivin, β-catenin and x-protein of hepatitis B virus) that are involved in the regulation of cell cycle progression, apoptosis, proliferation and oncogenic transformation...
December 7, 2016: World Journal of Gastroenterology: WJG
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