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Mesenchymal epithelial transition

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https://www.readbyqxmd.com/read/28335402/2-hydroxymelatonin-a-predominant-hydroxylated-melatonin-metabolite-in-plants-shows-antitumor-activity-against-human-colorectal-cancer-cells
#1
Yi Yang, Rui Zhou, So-Yeon Park, Kyoungwhan Back, Woo Kyun Bae, Kyung Keun Kim, Hangun Kim
2-Hydroxymelatonin is a predominant hydroxylated melatonin metabolite in plants. To investigate whether it has potent cytotoxic effects on colorectal cancer cells, four colorectal cancer cell lines, Caco2, HCT116, DLD1, and CT26, were treated with 2-hydroxymelatonin and melatonin. 2-Hydroxymelatonin had a much lower IC50 value than melatonin in the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The cytotoxic effect of 2-hydroxymelatonin was much stronger than that of melatonin at high concentrations (1000 or 2000 μM) in HCT116, DLD1, and CT26 cells, but only at intermediate concentrations (250 or 500 μM) in Caco2 cells...
March 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28334716/downregulation-of-ubap2l-inhibits-the-epithelial-mesenchymal-transition-via-snail1-regulation-in-hepatocellular-carcinoma-cells
#2
Tao Ye, Jing Xu, Ling Du, Wenhui Mo, Yiming Liang, Jinglin Xia
BACKGROUND/AIMS: Dysregulation of ubiquitin-associated protein 2-like (UBAP2L) has been reported in tumors, but its role in hepatocellular carcinoma (HCC) progression is unclear. METHODS: The expression levels of UBAP2L in HCC tissues and HCC cell lines were detected by western blot and quantitative real-time (qRT) PCR. The effects of UBAP2L expression on HCC cell biological traits, including migration and invasion, were investigated by wound healing assay and matrigel transwell assay...
March 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28334272/17%C3%AE-estradiol-induced-acsl4-protein-expression-promotes-an-invasive-phenotype-in-estrogen-receptor-positive-mammary-carcinoma-cells
#3
Anissa Belkaid, Rodney J Ouellette, Marc E Surette
Long chain acyl-CoA synthase-4 (ACSL4) expression has been associated with an aggressive phenotype in breast carcinoma cells, whereas its role in ERα-positive breast cancer has not been studied. ACSL4 prefers 20-carbon polyunsaturated fatty acid (PUFA) substrates, and along with other ACSLs has been associated with cellular uptake of exogenous fatty acids. 17β-estradiol induces proliferation and invasive capacities in ERα+ve breast carcinoma that is associated with modifications of cellular lipid metabolism...
March 10, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28334027/metformin-inhibits-gastric-cancer-cells-metastatic-traits-through-suppression-of-epithelial-mesenchymal-transition-in-a-glucose-independent-manner
#4
Shiva Valaee, Mohammad Mehdi Yaghoobi, Mehdi Shamsara
Epithelial-mesenchymal transition (EMT), which is mainly recognized by upregulation of mesenchymal markers and movement of cells, is a critical stage occurred during embryo development and spreading cancerous cells. Metformin is an antidiabetic drug used in treatment of type 2 diabetes. EMT inhibitory effect of metformin has been studied in several cancers; however, it remains unknown in gastric cancer. The aim of the present study was to investigate the metformin effects on inhibition of EMT-related genes as well as migration and invasion of AGS gastric cancer cell line...
2017: PloS One
https://www.readbyqxmd.com/read/28333382/regulation-and-function-of-extracellular-nicotinamide-phosphoribosyltransferase-visfatin
#5
Federico Carbone, Luca Liberale, Aldo Bonaventura, Alessandra Vecchiè, Matteo Casula, Michele Cea, Fiammetta Monacelli, Irene Caffa, Santina Bruzzone, Fabrizio Montecucco, Alessio Nencioni
Nicotinamide phosphoribosyltransferase (NAMPT) is an adipokine-enzyme, which was described as to play bioactivities both in the intracellular and in the extracellular environment. However, while the functions of intracellular NAMPT (iNAMPT) are well known, much less is known on extracellular NAMPT (eNAMPT), also called visfatin or pre-B cell colony-enhancing factor. iNAMPT catalyzes the rate-limiting step in the NAD+ biosynthesis pathway from nicotinamide. Its inhibition severely reduces intracellular NAD+ levels, achieving anti-inflammatory and anti-cancer effects...
March 16, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28332606/lumican-effectively-regulates-the-estrogen-receptors-associated-functional-properties-of-breast-cancer-cells-expression-of-matrix-effectors-and-epithelial-to-mesenchymal-transition
#6
Konstantina Karamanou, Marco Franchi, Zoi Piperigkou, Corinne Perreau, Francois-Xavier Maquart, Demitrios H Vynios, Stéphane Brézillon
Lumican is a small leucine-rich proteoglycan that has been shown to contribute in several physiological processes, but also to exert anticancer activity. On the other hand, it has been recently shown that knockdown of the estrogen receptor α (ERα) in low invasive MCF-7 (ERα+) breast cancer cells and the suppression of ERβ in highly aggressive MDA-MB-231 (ERβ+) cells significantly alter the functional properties of breast cancer cells and the gene expression profile of matrix macromolecules related to cancer progression and cell morphology...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332555/loxl2-drives-epithelial-mesenchymal-transition-via-activation-of-ire1-xbp1-signalling-pathway
#7
Eva P Cuevas, Pilar Eraso, María J Mazón, Vanesa Santos, Gema Moreno-Bueno, Amparo Cano, Francisco Portillo
Epithelial-to-Mesenchymal Transition (EMT) is a key process contributing to the aggressiveness of cancer cells. EMT is triggered by activation of different transcription factors collectively known as EMT-TFs. Different cellular cues and cell signalling networks activate EMT at transcriptional and posttranscriptional level in different biological and pathological situations. Among them, overexpression of LOXL2 (lysyl oxidase-like 2) induces EMT independent of its catalytic activity. Remarkably, perinuclear/cytoplasmic accumulation of LOXL2 is a poor prognosis marker of squamous cell carcinomas and is associated to basal breast cancer metastasis by mechanisms no yet fully understood...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332316/golph3-induces-epithelial-mesenchymal-transition-via-wnt-%C3%AE-catenin-signaling-pathway-in-epithelial-ovarian-cancer
#8
Jing Sun, Xiaoming Yang, Ru Zhang, Suqing Liu, Xupei Gan, Xiaowei Xi, Zhenbo Zhang, Youji Feng, Yunyan Sun
Golgi phosphoprotein 3 (GOLPH3), a newly recognized oncogene, is associated with tumor growth, metastasis, and poor prognosis in several types of cancer. However, its biological role and underlying mechanism in epithelial ovarian cancer (EOC) remain poorly understood. Here, we found that GOLPH3 was overexpressed in EOC tissues and cell lines. This overexpression promoted the migration and invasion of EOC cells. Moreover, GOLPH3 upregulated the expression of epithelial-mesenchymal transition (EMT) markers, such as N-cadherin and Snail, and the Wnt/β-catenin-related genes cyclin-D1 and c-Myc, which were restored via silencing of GOLPH3 expression...
March 23, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28332047/mechanisms-of-resistance-to-target-therapies-in-non-small-cell-lung-cancer
#9
Francesco Facchinetti, Claudia Proto, Roberta Minari, Marina Garassino, Marcello Tiseo
Targeted therapies are revolutionizing the treatment of advanced non-small cell lung cancer (NSCLC). The discovery of key oncogenic events mainly in lung adenocarcinoma, like EGFR mutations or ALK rearrangements, has changed the treatment landscape while improving the prognosis of lung cancer patients. Inevitably, virtually all patients initially treated with targeted therapies develop resistance because of the emergence of an insensitive cellular population, selected by pharmacologic pressure. Diverse mechanisms of resistance, in particular to EGFR, ALK and ROS1 tyrosine-kinase inhibitors (TKIs), have now been discovered and may be classified in three different groups: (1) alterations in the target (such as EGFR T790M and ALK or ROS1 mutations); (2) activation of alternative pathways (i...
March 23, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28331343/silencing-trim59-inhibits-invasion-migration-and-epithelial-to-mesenchymal-transition-via-tgf-%C3%AE-smad2-3-signaling-pathway-in-bladder-cancer-cells
#10
Wei Chen, Kai Zhao, Chenkui Miao, Aiming Xu, Jianzhong Zhang, Jundong Zhu, Shifeng Su, Zengjun Wang
The evolutionarily conserved genes that encode the tripartite motif (TRIM) protein family are involved in various biological processes, including cellular immunity, inflammatory reaction, antiviral activity, and tumor progression. One member of this protein family, Trim59, has been reported as a novel biomarker for the occurrence and progression of multiple human carcinomas, such as lung cancer, gastric cancer, cervical cancer, and osteosarcoma. However, little is known about the relationship between Trim59 and bladder carcinogenesis...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28331184/the-long-non-coding-rna-linc01013-enhances-invasion-of-human-anaplastic-large-cell-lymphoma
#11
I-Hsiao Chung, Pei-Hsuan Lu, Yang-Hsiang Lin, Ming-Ming Tsai, Yun-Wen Lin, Chau-Ting Yeh, Kwang-Huei Lin
Anaplastic large-cell lymphoma (ALCL) is a rare type of highly malignant, non-Hodgkin lymphoma (NHL). Currently, only studies on the chimeric oncogene NPM-ALK have reported a link to ALCL progression. However, the specific molecular mechanisms underlying the invasion of ALCL are still unclear. Here, we sought to investigate differentially expressed, long non-coding RNAs (lncRNAs) in ALCL and their potential biological function. Our microarray analyses revealed that LINC01013, a novel non-coding RNA gene, was highly expressed in clinical specimens of ALCL and was significantly upregulated in invasive ALCL cell lines...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331066/ketamine-induced-bladder-fibrosis-involves-epithelial-to-mesenchymal-transition-mediated-by-transforming-growth-factor-%C3%AE-1
#12
Junpeng Wang, Yang Chen, Di Gu, Guihao Zhang, Jiawei Chen, Jie Zhao, Peng Wu
Bladder wall fibrosis is a major complication of ketamine-induced cystitis (KC), but the underlying pathogenesis is poorly understood. The aim of the present study was to elucidate the mechanism of ketamine-induced fibrosis in association with epithelial-to-mesenchymal transition (EMT) mediated by transforming growth factor-β1 (TGF-β1). Sprague-Dawley rats were randomly distributed into four groups, which received saline, ketamine, ketamine combined with a TGF-β receptor (TβR) inhibitor (SB505124) for 16 weeks, or 12 weeks of ketamine and 4 weeks of abstinence...
March 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28330927/e3-ubiquitin-ligase-ubr5-drives-the-growth-and-metastasis-of-triple-negative-breast-cancer
#13
Liqiu Liao, Mei Song, Xin Li, Lili Tang, Tuo Zhang, Lixing Zhang, Yihang Pan, Lotfi Chouchane, Xiaojing Ma
Patients with triple negative breast cancers (TNBC) are at high risk for recurrence and metastasis at an early time despite standard treatment, underscoring the need for novel therapeutic modalities. Here we report for the first time a distinctive and profound role of the E3 ubiquitin ligase UBR5 in the growth and metastasis of TNBC. An analysis of primary TNBC specimen by whole exon sequencing revealed strong gene amplifications of UBR5 associated with the disease. UBR5 overexpression in TNBC tissues was confirmed at mRNA and protein levels...
March 22, 2017: Cancer Research
https://www.readbyqxmd.com/read/28329421/naproxen-inhibits-uvb-induced-basal-cell-and-squamous-cell-carcinoma-development-in-ptch1-skh-1-hairless-mice
#14
Sandeep C Chaudhary, Mohammad Waseem, Mehtab Rana, Hui Xu, Levy Kopelovich, Craig A Elmets, Mohammad Athar
Naproxen possesses anti-proliferative and pro-apoptotic effects besides its known anti-inflammatory functions. Here, we demonstrate the anti-cancer effects of naproxen against UVB-induced BCCs and SCCs in a highly susceptible murine model of UVB carcinogenesis. Naproxen significantly inhibited UVB-induced BCCs and SCCs in this model. Tumor number and volume were significantly decreased (p<0.005 and p<0.05, respectively). Inhibition in UVB-induced SCCs and BCCs was 77% and 86%, respectively, which was associated with reduced PCNA and cyclin D1 and increased apoptosis...
March 22, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28329136/chronic-resveratrol-treatment-inhibits-mrc5-fibroblast-sasp-related-protumoral-effects-on-melanoma-cells
#15
Beatrice Menicacci, Anna Laurenzana, Anastasia Chillà, Francesca Margheri, Silvia Peppicelli, Elisabetta Tanganelli, Gabriella Fibbi, Lisa Giovannelli, Mario Del Rosso, Alessandra Mocali
Cellular senescence is related to organismal aging and is observed after DNA damaging cancer therapies, that induce tumor-suppressive modifications, but it is characterized by a strong increase in secreted factors, termed the "senescence-associated secretory phenotype" (SASP). Particularly, SASP from stroma senescent fibroblasts creates a cancer-favoring microenvironment, providing targets for anti-cancer interventions. In the present article, chronic treatment (5 weeks) with 5 µM resveratrol has been used to modulate senescence-related protumoral features of MRC5 fibroblasts, reducing SASP-related interleukins IL1α, IL1β, IL6, and IL8; transforming-growth-factor-β (TGFβ); matrix metallo-proteinases MMP3 and MMP2; urokinase plasminogen activator (uPA); receptor proteins uPAR, IL6R, insulin growth factor receptor-1 (IGF-1R), TGFβ-R2, and CXCR4...
January 20, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28326594/hypoacetylation-of-acetyl-histone-h3-h3k9ac-as-marker-of-poor-prognosis-in-oral-cancer
#16
Liana Preto Webber, Vivian Petersen Wagner, Marina Curra, Pablo Agustin Vargas, Luise Meurer, Vinícius Coelho Carrard, Cristiane Helena Squarize, Rogério Moraes Castilho, Manoela Domingues Martins
AIMS: Epigenetics refers to changes in cell characteristics that occur independently of modifications to the DNA sequence. Oral carcinogenesis is influenced by modifications in epigenetic mechanisms, including changes in histones, which are proteins that support chromatin remodeling for the dynamic regulation of gene expression and silencing. The dysregulation of histone acetylation can lead to the uncontrolled activity of different genes, thereby triggering events associated with malignant transformation...
March 22, 2017: Histopathology
https://www.readbyqxmd.com/read/28323032/metabolic-re-wiring-of-isogenic-breast-epithelial-cell-lines-following-epithelial-to-mesenchymal-transition
#17
Skarphedinn Halldorsson, Neha Rohatgi, Manuela Magnusdottir, Kumari Sonal Choudhary, Thorarinn Guðjónsson, Erik Knutsen, Anna Barkovskaya, Bylgja Hilmarsdottir, Maria Perander, Gunhild M Mælandsmo, Steinn Gudmundsson, Óttar Rolfsson
Epithelial to mesenchymal transition (EMT) has implications in tumor progression and metastasis. Metabolic alterations have been described in cancer development but studies focused on the metabolic re-wiring that takes place during EMT are still limited. We performed metabolomics profiling of a breast epithelial cell line and its EMT derived mesenchymal phenotype to create genome-scale metabolic models descriptive of both cell lines. Glycolysis and OXPHOS were higher in the epithelial phenotype while amino acid anaplerosis and fatty acid oxidation fueled the mesenchymal phenotype...
March 16, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28323021/the-challenge-of-targeting-cancer-stem-cells-to-halt-metastasis
#18
REVIEW
Alice Agliano, Alfonso Calvo, Carol Box
Despite a continuing debate about the existence of cancer stem cells (CSCs), recent discoveries have provided further support for their existence and their roles in drug resistance, cancer recurrence and metastasis. CSC characteristics, such as self-renewal and tumour initiation, and supporting cellular processes, particularly the epithelial-to-mesenchymal transition, are attracting a great deal of attention from cancer researchers as they offer opportunities for discovering novel therapeutic targets for future drug development...
March 16, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28323020/metabolic-reprogramming-in-cancer-cells-consequences-on-ph-and-tumour-progression-integrated-therapeutic-perspectives-with-dietary-lipids-as-adjuvant-to-anticancer-treatment
#19
REVIEW
Jean-François Dumas, Lucie Brisson, Stéphan Chevalier, Karine Mahéo, Gaëlle Fromont, Driffa Moussata, Pierre Besson, Sébastien Roger
While tumours arise from acquired mutations in oncogenes or tumour-suppressor genes, it is clearly established that cancers are metabolic diseases characterized by metabolic alterations in tumour cells, and also non-tumour cells of the host organism resulting in tumour cachexia and patient weakness. In this review, we aimed at delineating details by which metabolic alterations in cancer cells, characterized by mitochondrial bioenergetics deregulations and the preference for aerobic glycolysis, are critical parameters controlling the aggressive progression of tumours...
March 17, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28322989/role-of-micrornas-in-endocrine-cancer-metastasis
#20
Cilene Rebouças Lima, Cibele Crastequini Gomes, Marinilce Fagundes Santos
The deregulation of transcription and processing of microRNAs (miRNAs), as well as their function, has been involved in the pathogenesis of several human diseases, including cancer. Despite advances in therapeutic approaches, cancer still represents one of the major health problems worldwide. Cancer metastasis is an aggravating factor in tumor progression, related to increased treatment complexity and a worse prognosis. After more than one decade of extensive studies of miRNAs, the fundamental role of these molecules in cancer progression and metastasis is beginning to be elucidated...
March 18, 2017: Molecular and Cellular Endocrinology
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