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https://www.readbyqxmd.com/read/28302679/disrupting-androgen-receptor-signaling-induces-snail-mediated-epithelial-mesenchymal-plasticity-in-prostate-cancer
#1
Lu Miao, Lin Yang, Rui Li, Daniel Nava Rodrigues, Mateus Crespo, Jer-Tsong Hsieh, Wayne D Tilley, Johann S de Bono, Luke A Selth, Ganesh V Raj
Epithelial to mesenchymal plasticity (EMP) has been linked to metastasis, stemness, and drug resistance. In prostate cancer (PCa), EMP has been associated with both suppression and activation of androgen receptor (AR) signaling. Here we investigated the effect of the potent AR antagonist enzalutamide on EMP in multiple preclinical models of PCa and patient tissues. Enzalutamide treatment significantly enhanced the expression of EMP drivers (ZEB1, ZEB2, Snail, Twist, and FOXC2) and mesenchymal markers (N-cadherin, fibronectin, and vimentin) in PCa cells, enhanced PCa cell migration, and induced PCa transformation to a spindle, fibroblast-like morphology...
March 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28282787/long-non-coding-rna-snhg20-predicts-a-poor-prognosis-for-hcc-and-promotes-cell-invasion-by-regulating-the-epithelial-to-mesenchymal-transition
#2
Jinxia Liu, Cuihua Lu, Mingbing Xiao, Feng Jiang, Lishuai Qu, Runzhou Ni
BACKGROUND: Recently, Accumulating evidence indicates that long noncoding RNAs (lncRNAs) have been shown to have critical regulatory roles in human tumor biology and development. However, the expression pattern and biological function of lncRNA small nucleolar RNA host gene 20 (SNHG20) in hepatocellular carcinoma (HCC) remains largely unknown. METHODS: The expression of SNHG20 in 96 paired HCC tissues and cell lines were detected by quantitative real-time PCR (qRT-PCR) analysis...
March 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28276310/basic-transcription-factor-3-is-required-for-proliferation-and-epithelial-mesenchymal-transition-via-regulation-of-foxm1-and-jak2-stat3-signaling-in-gastric-cancer
#3
De-Zhong Zhang, Bing-He Chen, Lan-Fang Zhang, Ming-Kun Cheng, Xiang-Jie Fang, Xin-Jun Wu
Gastric cancer (GC) is the most common epithelial malignancy worldwide. Basic transcription factor 3 (BTF3) plays a crucial role in the regulation of various biological processes. We designed experiments to investigate the molecular mechanism underlying the role of BTF3 in GC cell proliferation and metastasis. We confirmed that BTF3 expression was decreased in GC tissues and several GC cell lines. Lentivirus-mediated downregualtion of BTF3 reduced cell proliferation, induced S and G2/M cell cycle arrest, and increased apoptosis...
March 8, 2017: Oncology Research
https://www.readbyqxmd.com/read/28256768/topics-in-histopathology-of-sweat-gland-and-sebaceous-neoplasms
#4
REVIEW
Shin-Ichi Ansai
This article reviews several topics regarding sweat gland and sebaceous neoplasms. First, the clinicopathological characteristics of poroid neoplasms are summarized. It was recently reported that one-fourth of poroid neoplasms are composite tumors and one-fourth are apocrine type lesions. Recent progress in the immunohistochemical diagnosis of sweat gland neoplasms is also reviewed. CD117 can help to distinguish sweat gland or sebaceous tumors from other non-Merkel cell epithelial tumors of the skin. For immunohistochemical differential diagnosis between sweat gland carcinoma (SGC) other than primary cutanesous apocrine carcinoma and skin metastasis of breast carcinoma (SMBC), a panel of antibodies may be useful, including p63 (SGC(+) , SMBC(-) ), CK5/6 (SGC(+) , SMBC(-) ), podoplanin (SGC(+) , SMBC(-) ) and mammaglobin (SGC(-) , SMBC(+) )...
March 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28247944/ets1-and-ese1-reciprocally-regulate-expression-of-zeb1-zeb2-dependently-on-erk1-2-activity-in-breast-cancer-cells
#5
Nguyen Duy Sinh, Kaori Endo, Keiji Miyazawa, Masao Saitoh
The epithelial-mesenchymal transition (EMT) is a crucial morphological event that occurs during progression of epithelial tumors. We reported previously that levels of the δEF1 family proteins (ZEB1/δEF1 and ZEB2/SIP1), key regulators of the EMT, are positively correlated with EMT phenotypes and aggressiveness of breast cancer. Here, we show that Ets1 induces ZEB expression and activates the ZEB1 promoter, independently of its threonine 38 phosphorylation status. In the basal-like subtype of breast cancer cells, siRNAs targeting Ets1 repressed expression of ZEBs and partially restored their epithelial phenotypes and sensitivity to anti-tumor drugs...
March 1, 2017: Cancer Science
https://www.readbyqxmd.com/read/28209612/microrna-520f-reverses-epithelial-to-mesenchymal-transition-by-targeting-adam9-and-tgfbr2
#6
Jasmijn Gm van Kampen, Onno van Hooij, Cornelius Fj Jansen, Frank P Smit, Paula I van Noort, Iman J Schultz, Roel Qj Schaapveld, Jack A Schalken, Gerald W Verhaegh
Reversing epithelial-to-mesenchymal transition (EMT) in cancer cells has been widely considered as an approach to combat cancer progression and therapeutic resistance, but a limited number of broadly comprehensive investigations of microRNAs involved in this process have been conducted. In this study, we screened a library of 1120 microRNA for their ability to transcriptionally activate the E-cadherin gene CDH1 in a promoter reporter assay as a measure of EMT reversal. By this approach, we defined miR-520f as a novel EMT-reversing microRNA...
February 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28203609/zeb2-inhibiting-the-inhibitors-in-schwann-cells
#7
Bastian G Brinkmann, Susanne Quintes
Development of Schwann cells is tightly regulated by concerted action of activating and inhibiting factors. Most of the regulatory feedback loops identified to date are transcriptional activators promoting induction of genes coding for integral myelin proteins and lipids. The mechanisms by which inhibitory factors are silenced during Schwann cell maturation are less well understood. We could recently show a pivotal function for the transcription factor zinc finger E-box binding homeobox 2 (Zeb2) during Schwann cell development and myelination as a transcriptional repressor of maturation inhibitors...
2017: Neurogenesis (Austin, Tex.)
https://www.readbyqxmd.com/read/28192397/downregulation-of-mir-218-contributes-to-epithelial-mesenchymal-transition-and-tumor-metastasis-in-lung-cancer-by-targeting-slug-zeb2-signaling
#8
Z-M Shi, L Wang, H Shen, C-F Jiang, X Ge, D-M Li, Y-Y Wen, H-R Sun, M-H Pan, W Li, Y-Q Shu, L-Z Liu, S C Peiper, J He, B-H Jiang
Epithelial-mesenchymal transition (EMT) has been recognized as a key element of cell migration and invasion in lung cancer; however, the underlying mechanisms are not fully elucidated. Recently, emerging evidence suggest that miRNAs have crucial roles in control of EMT and EMT-associated traits such as migration, invasion and chemoresistance. Here, we found that miR-218 expression levels were significantly downregulated in lung cancer tissues compared with adjacent non-cancerous tissues, and the levels of miR-218 were significantly associated with histological grades and lymph node metastasis...
February 13, 2017: Oncogene
https://www.readbyqxmd.com/read/28135249/the-cdc42-rac1-regulator-cdgap-is-a-novel-e-cadherin-transcriptional-co-repressor-with-zeb2-in-breast-cancer
#9
Y He, J J Northey, A Pelletier, Z Kos, L Meunier, B Haibe-Kains, A-M Mes-Masson, J-F Côté, P M Siegel, N Lamarche-Vane
The loss of E-cadherin causes dysfunction of the cell-cell junction machinery, which is an initial step in epithelial-to-mesenchymal transition (EMT), facilitating cancer cell invasion and the formation of metastases. A set of transcriptional repressors of E-cadherin (CDH1) gene expression, including Snail1, Snail2 and Zeb2 mediate E-cadherin downregulation in breast cancer. However, the molecular mechanisms underlying the control of E-cadherin expression in breast cancer progression remain largely unknown...
January 30, 2017: Oncogene
https://www.readbyqxmd.com/read/28133913/the-role-of-epithelial-mesenchymal-transition-drivers-zeb1-and-zeb2-in-mediating-docetaxel-resistant-prostate-cancer
#10
Karen Hanrahan, Amanda O'Neill, Maria Prencipe, Jane Bugler, Lisa Murphy, Aurelie Fabre, Martin Puhr, Zoran Culig, Keefe Murphy, R William Watson
Docetaxel is the main treatment for advanced castration-resistant prostate cancer; however, resistance eventually occurs. The development of intratumoral drug-resistant subpopulations possessing a cancer stem cell (CSC) morphology is an emerging mechanism of docetaxel resistance, a process driven by epithelial-mesenchymal transition (EMT). This study characterised EMT in docetaxel-resistant sublines through increased invasion, MMP-1 production and ZEB1 and ZEB2 expression. We also present evidence for differential EMT across PC-3 and DU145 in vitro resistance models as characterised by differential migration, cell colony scattering and susceptibility to the CSC inhibitor salinomycin...
December 19, 2016: Molecular Oncology
https://www.readbyqxmd.com/read/28126955/from-emt-to-hsc-to-aml-zeb2-is-a-cell-fate-switch
#11
Sara E Meyer
No abstract text is available yet for this article.
January 26, 2017: Blood
https://www.readbyqxmd.com/read/28125713/knockdown-of-mediator-complex-subunit-19-suppresses-the-growth-and-invasion-of-prostate-cancer-cells
#12
Shengqiang Yu, Yanwei Wang, Hejia Yuan, Hongwei Zhao, Wei Lv, Jian Chen, Fengchun Wan, Dongfu Liu, Zhenli Gao, Jitao Wu
Prostate cancer (PCa) is one of the most common cancers in elderly men. Mediator Complex Subunit 19 (Med19) is overexpressed and plays promotional roles in many cancers. However, the roles of Med19 in PCa are still obscure. In this study, by using immunohistochemical staining, we found higher expression level of Med19 in PCa tissues than in adjacent benign prostate tissues. We then knocked down the Med19 expression in PCa cell lines LNCaP and PC3 by using lentivirus siRNA. Cell proliferation, anchor-independent growth, migration, and invasion were suppressed in Med19 knockdown PCa cells...
2017: PloS One
https://www.readbyqxmd.com/read/28119291/mirna-200c-and-mirna-141-as-potential-prognostic-biomarkers-and-regulators-of-epithelial-mesenchymal-transition-in-eyelid-sebaceous-gland-carcinoma
#13
Mansi Bhardwaj, Seema Sen, Kunzang Chosdol, Anjana Sharma, Neelam Pushker, Seema Kashyap, Sameer Bakhshi, Mandeep S Bajaj
BACKGROUND: MicroRNA (miRNA)-200c and miRNA-141 are tumour suppressors, which regulate epithelial-mesenchymal transition (EMT), leading to tumour invasion and metastasis in various malignancies. miRNA-200c and miRNA-141 maintain the epithelial phenotype by post-transcriptionally inhibiting the E-cadherin repressors, zinc finger E-box binding homeobox (ZEB)1 and ZEB2. The present study was performed to determine the prognostic significance of miRNA-200c and miRNA-141, and their association with EMT markers ZEB1, ZEB2 and E-cadherin in eyelid sebaceous gland carcinoma (SGC)...
January 24, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28109909/erk2-zeb1-mir-101-1-axis-contributes-to-epithelial-mesenchymal-transition-and-cell-migration-in-cancer
#14
Kailash Chandra Mangalhara, Siddharth Manvati, Sunil Kumar Saini, Kalaiarasan Ponnusamy, Gaurav Agarwal, Suresh K Abraham, Rameshwar N K Bamezai
Regulation of metastasis continues to remain enigmatic despite our improved understanding of cancer. Identification of microRNAs associated with metastasis in the recent past has provided a new hope. Here, we show how microRNA-101 (miR-101) regulates two independent processes of cellular metastasis by targeting pro-metastatic upstream regulatory transcription factors, ZEB1 and ZEB2, and downstream effector-actin modulators, RHOA and RAC1, providing a single target for therapeutic intervention. Further, we depict how down-regulation of miR-101 by extracellular signal-regulated kinase-2 (ERK2) is vital for MAP kinase pathway induced cellular migration and mesenchymal transition...
January 18, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28105727/placental-dysfunction-is-associated-with-altered-microrna-expression-in-pregnant-women-with-low-folate-status
#15
Bernadette C Baker, Fiona L Mackie, Samantha C Lean, Susan L Greenwood, Alexander Ep Heazell, Karen Forbes, Rebecca L Jones
SCOPE: Low maternal folate status during pregnancy increases the risk of delivering small for gestational age (SGA) infants, but the mechanistic link between maternal folate status, SGA and placental dysfunction is unknown. microRNAs (miRNA) are altered in pregnancy pathologies and by folate in other systems. We hypothesized low maternal folate status causes placental dysfunction, mediated by altered miRNA expression. METHODS AND RESULTS: A prospective observational study recruited pregnant adolescents, and assessed third trimester folate status and placental function...
January 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28094084/incontinence-and-psychological-symptoms-in-individuals-with-mowat-wilson-syndrome
#16
Justine Niemczyk, Stewart Einfeld, David Mowat, Monika Equit, Catharina Wagner, Leopold Curfs, Alexander von Gontard
BACKGROUND: Mowat-Wilson Syndrome (MWS) is caused by deletion/mutation of the ZEB2 gene on chromosome 2q22. MWS is characterized by a distinctive facial appearance, severe intellectual disability and other anomalies, e.g. seizures and/or Hirschsprung disease (HSCR). Most individuals have a sociable demeanor, but one third show psychological problems. AIMS: The aim was to investigate incontinence and psychological problems in MWS. METHODS AND PROCEDURES: 26 children (4-12 years), 13 teens (13-17 years) and 8 adults (>18years) were recruited through a MWS support group...
March 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28087626/snail2-and-zeb2-repress-p-cadherin-to-define-embryonic-territories-in-the-chick-embryo
#17
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/28069602/oncogenic-zeb2-activation-drives-sensitivity-toward-kdm1a-inhibition-in-t-cell-acute-lymphoblastic-leukemia
#18
Steven Goossens, Sofie Peirs, Wouter Van Loocke, Jueqiong Wang, Mina Takawy, Filip Matthijssens, Stefan E Sonderegger, Katharina Haigh, Thao Nguyen, Niels Vandamme, Magdaline Costa, Catherine Carmichael, Filip Van Nieuwerburgh, Dieter Deforce, Oded Kleifeld, David J Curtis, Geert Berx, Pieter Van Vlierberghe, Jody J Haigh
Elevated expression of the Zinc finger E-box binding homeobox transcription factor-2 (ZEB2) is correlated with poor prognosis and patient outcome in a variety of human cancer subtypes. Using a conditional gain-of-function mouse model, we recently demonstrated that ZEB2 is an oncogenic driver of immature T-cell acute lymphoblastic leukemia (T-ALL), a heterogenic subgroup of human leukemia characterized by a high incidence of remission failure or hematological relapse after conventional chemotherapy. Here, we identified the lysine-specific demethylase KDM1A as a novel interaction partner of ZEB2 and demonstrated that mouse and human T-ALLs with increased ZEB2 levels critically depend on KDM1A activity for survival...
February 23, 2017: Blood
https://www.readbyqxmd.com/read/28064471/vasohibin-2-is-required-for-epithelial-mesenchymal-transition-of-ovarian-cancer-cells-by-modulating-tgf-%C3%AE-signaling
#19
Rie Norita, Yasuhiro Suzuki, Yutaka Furutani, Kazuki Takahashi, Yasuhiro Yoshimatsu, Katarzyna A Podyma-Inoue, Tetsuro Watabe, Yasufumi Sato
Vasohibin-2 (VASH2) is a homologue of VASH1, an endothelium-derived angiogenesis inhibitor. VASH2 is mainly expressed in cancer cells, and has been implicated in the progression of cancer by inducing angiogenesis and tumor growth. While VASH2 has been recently reported to be involved in epithelial-mesenchymal transition (EMT), its precise roles are obscure. The aim of the present study was to clarify the role of VASH2 in the EMT of cancer cells in relation to TGF-β signaling, which is a major stimulator of the EMT...
January 8, 2017: Cancer Science
https://www.readbyqxmd.com/read/28063956/differentiation-of-mouse-enteric-nervous-system-progenitor-cells-is-controlled-by-endothelin-3-and-requires-regulation-of-ednrb-by-sry-box-10-and-zinc-finger-e-box-binding-homeobox-2
#20
Yuli Watanabe, Laure Stanchina, Laure Lecerf, Nadjet Gacem, Andrea Conidi, Viviane Baral, Veronique Pingault, Danny Huylebroeck, Nadege Bondurand
BACKGROUND & AIMS: Maintenance and differentiation of progenitor cells in the developing enteric nervous system are controlled by molecules such as the signaling protein endothelin 3 (EDN3), its receptor (the endothelin receptor type B [EDNRB]), and the transcription factors SRY-box 10 (SOX10) and zinc finger E-box binding homeobox 2 (ZEB2). We used enteric progenitor cell (EPC) cultures and mice to study the roles of these proteins in enteric neurogenesis and their cross regulation. METHODS: We performed studies in mice with a Zeb2 loss-of-function mutation (Zeb2(Δ)) and mice carrying a spontaneous recessive mutation that prevents conversion EDN3 to its active form (Edn3(ls))...
January 5, 2017: Gastroenterology
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