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https://www.readbyqxmd.com/read/27916370/tanshinone-iia-attenuates-epithelial-mesenchymal-transition-to-inhibit-the-tracheal-narrowing
#1
Hongtao Duan, Lijie Ma, Honggang Liu, Yong Zhang, Zhipei Zhang, Xiaolong Yan, Xiaofei Li
BACKGROUND: This study examines the effects of tanshinone IIA (TIIA) on epithelial-mesenchymal transition (EMT) in tracheal transplantation and the ability of TIIA to inhibit tracheal narrowing after tracheal transplantation. Mechanisms that may be involved in this process are also explored. METHODS: Human bronchial epithelial cells were treated in vitro with TGF-β1 for 72 h. The cells were pretreated with TIIA (40 μg/mL) or DMSO for 2 h before TGF-β1 stimulation...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27908834/gamma-secretase-inhibitor-impairs-epithelial-to-mesenchymal-transition-induced-by-tgf-%C3%AE-in-ovarian-tumor-cell-lines
#2
M C Pazos, D Abramovich, A Bechis, P Accialini, F Parborell, M Tesone, G Irusta
Ovarian cancer is characterized by being highly metastatic, a feature that represents the main cause of failure of the treatment. This study investigated the effects of γ-secretase inhibition on the TGF-β-induced epithelial-mesenchymal transition (EMT) process in ovarian cancer cell lines. SKOV3 cells incubated in the presence of TGF-β showed morphological and biochemical changes related to EMT, which were blocked by co-stimulation with TGF-β and the γ-secretase inhibitor DAPT. In SKOV3 and IGROV1 cells, the co-stimulation blocked the cadherin switch and the increase in the transcription factors Snail, Slug, Twist and Zeb1 induced by TGF-β...
November 28, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27899639/histone-demethylase-phf8-promotes-epithelial-to-mesenchymal-transition-and-breast-tumorigenesis
#3
Peng Shao, Qi Liu, Peterson Kariuki Maina, Jiayue Cui, Thomas B Bair, Tiandao Li, Shaikamjad Umesalma, Weizhou Zhang, Hank Heng Qi
Histone demethylase PHF8 is upregulated and plays oncogenic roles in various cancers; however, the mechanisms underlying its dysregulation and functions in carcinogenesis remain obscure. Here, we report the novel functions of PHF8 in EMT (epithelial to mesenchymal transition) and breast cancer development. Genome-wide gene expression analysis revealed that PHF8 overexpression induces an EMT-like process, including the upregulation of SNAI1 and ZEB1. PHF8 demethylates H3K9me1, H3K9me2 and sustains H3K4me3 to prime the transcriptional activation of SNAI1 by TGF-β signaling...
November 29, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27878247/oridonin-inhibition-and-mir%C3%A2-200b%C3%A2-3p-zeb1-axis-in-human-pancreatic-cancer
#4
Zhifang Gui, Feng Luo, Yayang Yang, Can Shen, Shuquan Li, Jian Xu
The relationship among oridonin, miR-200b-3p and pancreatic cancer on epithelial-to-mesenchymal transition (EMT) was investigated for the molecular mechanism or signaling pathways on the migration in pancreatic cancer. BxPC-3 and PANC-1 cells were cultivated and the IC50 of oridonin in BxPC-3 and PANC-1 cells were obtained by the CCK-8 array. The expression of miR‑200b-3p was verified by using real-time PCR and its target gene was predicted. BxPC-3 and PANC-1 cells were treated with oridonin or transfected by miR-200b-3p, those cells were used for western blot assay, Transwell assay, ELISA, immunofluorescence staining, tumorigenesis assay in nude mice and immunohistochemical assay to verify the effects of oridonin or miR-200b-3p on pancreatic cancer...
November 18, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27871329/high-expression-of-epb41l5-an-integral-component-of-the-arf6-driven-mesenchymal-program-correlates-with-poor-prognosis-of-squamous-cell-carcinoma-of-the-tongue
#5
Yutaro Otsuka, Hiroki Sato, Tsukasa Oikawa, Yasuhito Onodera, Jin-Min Nam, Ari Hashimoto, Kiyoshi Fukunaga, Kanako C Hatanaka, Yutaka Hatanaka, Yoshihiro Matsuno, Satoshi Fukuda, Hisataka Sabe
BACKGROUND: Squamous cell carcinoma of the tongue (tongue SCC) is a major subtype of head and neck squamous cell carcinoma (HNSCC), which is an intractable cancer under current therapeutics. ARF6 and its effector AMAP1 are often overexpressed in different types of cancers, such as breast cancer and renal cancer, and in these cancers, AMAP1 binds to EPB41L5 to promote invasion, metastasis, and drug resistance. EPB41L5 is a mesenchymal-specific protein, normally induced during epithelial-mesenchymal transition (EMT) to promote focal adhesion dynamics...
November 21, 2016: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/27869652/epithelial-to-mesenchymal-transition-drives-a-pro-metastatic-golgi-compaction-process-through-scaffolding-protein-paqr11
#6
Xiaochao Tan, Priyam Banerjee, Hou-Fu Guo, Stephen Ireland, Daniela Pankova, Young-Ho Ahn, Irodotos Michail Nikolaidis, Xin Liu, Yanbin Zhao, Yongming Xue, Alan R Burns, Jonathon Roybal, Don L Gibbons, Tomasz Zal, Chad J Creighton, Daniel Ungar, Yanzhuang Wang, Jonathan M Kurie
Tumor cells gain metastatic capacity through a Golgi phosphoprotein 3-dependent (GOLPH3-dependent) Golgi membrane dispersal process that drives the budding and transport of secretory vesicles. Whether Golgi dispersal underlies the pro-metastatic vesicular trafficking that is associated with epithelial-to-mesenchymal transition (EMT) remains unclear. Here, we have shown that, rather than causing Golgi dispersal, EMT led to the formation of compact Golgi organelles with improved ribbon linking and cisternal stacking...
November 21, 2016: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27862275/long-noncoding-rna-zfas1-promotes-the-progression-of-colonic-cancer-by-modulating-zeb1-expression
#7
Changyi Fang, Jianbao Zan, Ben Yue, Chenchen Liu, Chenglong He, Dongwang Yan
BACKGROUND AND AIM: Long non-coding RNA ZFAS1 (zinc finger antisense 1) is frequently amplified in hepatocellular carcinoma and promotes metastasis by increasing zinc finger E-box binding homeobox 1 (ZEB1), which can potentiate the progression of epithelial-to-mesenchymal transition (EMT). However, the expression pattern and role of ZFAS1 in colonic cancer remains unknown. The present study aimed to investigate the role of ZFAS1 and its clinical significance in colonic cancer. METHODS: Paired clinical colonic cancer tissue samples and clinicopathologic characteristics of 73 patients were analyzed...
November 11, 2016: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/27861158/myc-associated-zinc-finger-protein-promotes-the-invasion-and-metastasis-of-hepatocellular-carcinoma-by-inducing-epithelial-mesenchymal-transition
#8
Wei Luo, Xiaonian Zhu, Wei Liu, Yuan Ren, Chunhua Bei, Linyuan Qin, Xueyan Miao, Fen Tang, Guifang Tang, Shengkui Tan
MYC associated zinc finger protein (MAZ) plays a key role in regulation of gene expression and tumor development. Studies have shown that deregulated expression of MAZ is closely related to the progression of tumors such as glioblastoma, breast cancer, prostate cancer and liposarcoma. However, the role of MAZ in hepatocellular carcinoma (HCC) has not been fully elucidated. Here, we found that expression of MAZ was increased in HCC and correlated to the distant metastasis of HCC. Moreover, we found that MAZ had a relationship with zinc finger E-box binding homeobox 1 and 2 (ZEB1 and ZEB2), two important mesenchymal markers in epithelial-mesenchymal transition (EMT) that were over-expressed in HCC...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27852622/resetting-cancer-stem-cell-regulatory-nodes-upon-myc-inhibition
#9
Silvia Galardi, Mauro Savino, Fiorella Scagnoli, Serena Pellegatta, Federica Pisati, Federico Zambelli, Barbara Illi, Daniela Annibali, Sara Beji, Elisa Orecchini, Maria Adele Alberelli, Clara Apicella, Rosaria Anna Fontanella, Alessandro Michienzi, Gaetano Finocchiaro, Maria Giulia Farace, Giulio Pavesi, Silvia Anna Ciafrè, Sergio Nasi
MYC deregulation is common in human cancer and has a role in sustaining the aggressive cancer stem cell populations. MYC mediates a broad transcriptional response controlling normal biological programmes, but its activity is not clearly understood. We address MYC function in cancer stem cells through the inducible expression of Omomyc-a MYC-derived polypeptide interfering with MYC activity-taking as model the most lethal brain tumour, glioblastoma. Omomyc bridles the key cancer stemlike cell features and affects the tumour microenvironment, inhibiting angiogenesis...
December 2016: EMBO Reports
https://www.readbyqxmd.com/read/27845906/specific-micro-rna-expression-patterns-distinguish-the-basal-and-luminal-subtypes-of-muscle-invasive-bladder-cancer
#10
Andrea E Ochoa, Woonyoung Choi, Xiaoping Su, Arlene Siefker-Radtke, Bogdan Czerniak, Colin Dinney, David J McConkey
The roles of non-coding RNAs in controlling clinical and biological heterogeneity in bladder cancer remain unclear. We used TCGA's published dataset (n = 405 tumors) as a discovery cohort and created a new validation cohort to define the miRNA expression patterns in the basal and luminal molecular subtypes of muscle-invasive bladder cancer (MIBC). We identified 63 miRNAs by PAM, which optimally identified basal and luminal tumors. The targets of the top luminal miRNAs were activators of EMT (ZEB1, ZEB2) and basal subtype transcription (IL-6, EGFR, STAT3), whereas the targets of the top basal miRNAs were involved in adipogenesis pathways and luminal breast cancer (ERBB2, ERBB3)...
November 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/27842518/mir-199a-5p-confers-tumor-suppressive-role-in-triple-negative-breast-cancer
#11
Jiawei Chen, Vivian Y Shin, Man T Siu, John C W Ho, Isabella Cheuk, Ava Kwong
BACKGROUND: Triple-negative breast cancer (TNBC) remains a poor prognostic factor for breast cancer since no effective targeted therapy is readily available. Our previous studies confirmed miR-199a-5p is a TNBC-specific circulating biomarker, however, its functional roles in breast cancer is largely unknown. Thus, we investigated the functional implication of miR-199a-5p in TNBC and its potential underlying mechanisms. METHODS: MTT assay was performed to investigate the cell proliferation after transient transfection of miR-199a-5p in MDA-MB-231 cell line, followed by cell cycle analysis...
November 14, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27836787/tumor-budding-at-the-invasive-front-of-colorectal-cancer-may-not-be-associated-with-the-epithelial-mesenchymal-transition
#12
Noriyuki Yamada, Tamotsu Sugai, Makoto Eizuka, Koudai Tsuchida, Ryo Sugimoto, Yoshiharu Mue, Masamichi Suzuki, Mitsumasa Osakabe, Noriyuki Uesugi, Kazuyuki Ishida, Kouki Otsuka, Takayuki Matsumoto
Tumor budding is thought to reflect the epithelial-mesenchymal transition (EMT). However, the molecular mechanism linking tumor buds and the EMT remains unclear. Here, we examined the induction of tumor budding and EMT and their association with EMT-related proteins (ZEB1, TWIST, SNAIL and SLUG) in colorectal cancer (CRC). Immunohistochemical expression of pan-cytokeratin was examined for identification of tumor budding in 101 CRCs. Grading of tumor budding was classified into low and high grade groups. Tissue micro-array was conducted to identify tumor budding sites...
November 8, 2016: Human Pathology
https://www.readbyqxmd.com/read/27836735/polypyrimidine-tract-binding-protein-1-mediated-down-regulation-of-atg10-facilitates-metastasis-of-colorectal-cancer-cells
#13
Yoon Kyung Jo, Seon Ae Roh, Heejin Lee, Na Yeon Park, Eun Sun Choi, Ju-Hee Oh, So Jung Park, Ji Hyun Shin, Young-Ah Suh, Eun Kyung Lee, Dong-Hyung Cho, Jin Cheon Kim
Autophagy plays complex roles in tumor initiation and development, and the expression of autophagy-related genes (ATGs) is differentially regulated in various cancer cells, depending on their environment. In this study, we analyzed the expressional relationship between polypyrimidine tract-binding protein 1 (PTBP1) and ATG10 in metastatic colorectal cancer. PTBP1 is associated with tumor metastasis in primary colorectal tumors and colorectal cancer liver metastasis (CLM) tissues. In addition, PTPB1 directly interacts with mRNA of ATG10, and regulates ATG10 expression level in colorectal cancer cells...
November 9, 2016: Cancer Letters
https://www.readbyqxmd.com/read/27835603/microenvironmental-networks-promote-tumor-heterogeneity-and-enrich-for-metastatic-cancer-stem-like-cells-in-luminal-a-breast-tumor-cells
#14
Polina Weitzenfeld, Tsipi Meshel, Adit Ben-Baruch
The roles of the tumor microenvironment (TME) in generating intra-tumoral diversity within each specific breast cancer subtype are far from being fully elucidated. In this study, we exposed Luminal-A breast cancer cells in culture to combined "TME Stimulation", representing three typical arms of the breast TME: hormonal (estrogen), inflammatory (tumor necrosis factor α) and growth-promoting (epidermal growth factor). In addition to enriching the tumor cell population with CD44+/β1+ cells (as we previously published), TME Stimulation selected for CD44+/CD24low/- stem-like cells, that were further enriched by doxorubicin treatment and demonstrated high plasticity in vitro and in vivo...
November 8, 2016: Oncotarget
https://www.readbyqxmd.com/read/27829995/long-noncoding-rna-zeb1-as1-acts-as-an-oncogene-in-osteosarcoma-by-epigenetically-activating-zeb1
#15
Chibo Liu, Jianjun Lin
Long noncoding RNAs (lncRNAs) have been demonstrated to be dysregulated in many disease states and have pivotal roles in various pathophysiological processes. However, the expression, roles and potential mechanism of lncRNA ZEB1-AS1 in osteosarcoma are still unknown. In this study, we measured ZEB1-AS1 expression and the results showed that ZEB1-AS1 was upregulated in osteosarcoma tissues and cells. Increased expression of ZEB1-AS1 is correlated with larger tumor size, progressed Enneking stage, tumor metastasis, worse recurrence-free and overall survival of osteosarcoma patients...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27824159/oncometabolite-d-2-hydroxyglurate-directly-induces-epithelial-mesenchymal-transition-and-is-associated-with-distant-metastasis-in-colorectal-cancer
#16
Hugh Colvin, Naohiro Nishida, Masamitsu Konno, Naotsugu Haraguchi, Hidekazu Takahashi, Junichi Nishimura, Taishi Hata, Koichi Kawamoto, Ayumu Asai, Kenta Tsunekuni, Jun Koseki, Tsunekazu Mizushima, Taroh Satoh, Yuichiro Doki, Masaki Mori, Hideshi Ishii
Deranged metabolism is a hallmark of cancer, playing a significant role in driving the disease process. One such example is the induction of carcinogenesis by the oncometabolite D-2 hydroxyglutarate (D-2HG), which is produced by the mutated enzyme isocitrate dehydrogenase (IDH) occurring in subsets of leukaemias and brain tumours. The oncogenic property of D-2HG appears to stem from its ability to interfere with the activities of α-ketoglutarate-dependent dioxygenases, including the Jumonji family histone demethylases...
November 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27822409/autophagy-inhibition-promotes-epithelial-mesenchymal-transition-through-ros-ho-1-pathway-in-ovarian-cancer-cells
#17
Zhe Zhao, Jing Zhao, Jing Xue, Xinrui Zhao, Peishu Liu
Autophagy has been proved to be involved in metastasis of cancers. However, the detailed mechanisms are still unclear. In this work, we aim to provide the first study of the role that autophagy plays in migration and invasion in ovarian cancer cells. Transwell chamber was used to examine migration and invasion capacities. Western blotting and immunofluorescence were performed to investigate the expressions of mesenchymal markers (Vimentin, N-cadherin), epithelial marker (Keratin), transcript factor (Zeb1) and HO-1...
2016: American Journal of Cancer Research
https://www.readbyqxmd.com/read/27818287/clinical-significance-of-epithelial-mesenchymal-transition-emt-markers-in-prostate-cancer
#18
Sandy Figiel, Caroline Vasseur, Franck Bruyere, Francois Rozet, Karine Maheo, Gaelle Fromont
The process of epithelial-to-mesenchymal transition (EMT) contributes to cancer progression, with activation of transcription factors leading to loss of epithelial characteristics and acquirement of mesenchymal properties. We analyzed in human prostate cancer (PCa) the expression of EMT markers at the different stages of PCa natural history, and evaluated its clinical significance. The expression of the key EMT transcription factor Zeb1, together with E-cadherin, vimentin, and N-cadherin, was evaluated by immunohistochemistry on tissue microarrays containing samples of normal prostate (n=58), clinically localized cancer (CLC) (n=242), castration resistant PCa (CRPC) (n=48), and metastases (n=43)...
November 3, 2016: Human Pathology
https://www.readbyqxmd.com/read/27809618/identification-of-upstream-transcription-factors-tfs-for-expression-signature-genes-in-breast-cancer
#19
Hongyan Zang, Ning Li, Yuling Pan, Jingguang Hao
Breast cancer is a common malignancy among women with a rising incidence. Our intention was to detect transcription factors (TFs) for deeper understanding of the underlying mechanisms of breast cancer. Integrated analysis of gene expression datasets of breast cancer was performed. Then, functional annotation of differentially expressed genes (DEGs) was conducted, including Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment. Furthermore, TFs were identified and a global transcriptional regulatory network was constructed...
November 4, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27806288/onset-of-spinal-cord-astrocyte-precursor-emigration-from-the-ventricular-zone-involves-the-zeb1-transcription-factor
#20
David Ohayon, Alain Garcès, Willy Joly, Chadi Soukkarieh, Tsuyoshi Takagi, Jean-Charles Sabourin, Eric Agius, Douglas S Darling, Pascal De Santa Barbara, Yujiro Higashi, Claus C Stolt, Jean-Philippe Hugnot, William D Richardson, Patrick Carroll, Alexandre Pattyn
During spinal cord development, astrocyte precursors arise from neuroepithelial progenitors, delaminate from the ventricular zone, and migrate toward their final locations where they differentiate. Although the mechanisms underlying their early specification and late differentiation are being deciphered, less is known about the temporal control of their migration. Here, we show that the epithelial-mesenchymal transition regulator Zeb1 is expressed in glial precursors and report that loss of Zeb1 function specifically delays the onset of astrocyte precursor delamination from the ventricular zone, correlating with transient deregulation of the adhesion protein Cadherin-1...
November 1, 2016: Cell Reports
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