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https://www.readbyqxmd.com/read/28512631/genetic-alterations-in-gastric-cancer-associated-with-helicobacter-pylori-infection
#1
REVIEW
Claudia I Rivas-Ortiz, Yolanda Lopez-Vidal, Luis Jose Rene Arredondo-Hernandez, Gonzalo Castillo-Rojas
Gastric cancer is a world health problem and depicts the fourth leading mortality cause from malignancy in Mexico. Causation of gastric cancer is not only due to the combined effects of environmental factors and genetic variants. Recent molecular studies have transgressed a number of genes involved in gastric carcinogenesis. The aim of this review is to understand the recent basics of gene expression in the development of the process of gastric carcinogenesis. Genetic variants, polymorphisms, desoxyribonucleic acid methylation, and genes involved in mediating inflammation have been associated with the development of gastric carcinogenesis...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28481041/reduction-of-the-tumorigenic-potential-of-human-retinoblastoma-cell-lines-by-tff1-overexpression-involves-p53-caspase-signaling-and-mir-18a-regulation
#2
Maike Busch, Jan Große-Kreul, Janina Jasmin Wirtz, Manfred Beier, Harald Stephan, Brigitte Royer-Pokora, Klaus Metz, Nicole Dünker
Trefoil factor family (TFF) peptides have been shown to play a pivotal role in oncogenic transformation, tumorigenesis and metastasis by changing cell proliferation, apoptosis, migration, and invasion behavior of various cancer cell lines. In the study presented, we investigated the effect of TFF1 overexpression on cell growth, viability, migration and tumorigenicity of different retinoblastoma (RB) cell lines. Transient TFF1 overexpression significantly increases RB cell apoptosis levels. Stable, lentiviral TFF1 overexpression likewise decreases RB cell viability, proliferation and growth and significantly increases apoptosis as revealed by WST-1 assays, BrdU and DAPI cell counts...
May 8, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28430953/gastric-proteins-muc5ac-and-tff1-as-potential-diagnostic-markers-of-colonic-sessile-serrated-adenomas-polyps
#3
Magomed Khaidakov, Keith K Lai, D Roudachevski, Julietta Sargsyan, Hannah E Goyne, Rish K Pai, Laura W Lamps, Curt H Hagedorn
Objectives: A subset of colon cancers originates from sessile serrated adenomas/polyps (SSA/Ps). Our goal was to identify markers for SSA/Ps that could aid in distinguishing them from hyperplastic polyps (HPs). Methods: We performed immunostaining for gastric proteins MUC5AC and TFF1 in formalin-fixed, paraffin-embedded (FFPE) samples of HPs (n = 47), SSA/Ps (n = 37), and normal colon (n = 30). Results: Control mucosa expressed only trace amounts of MUC5AC and TFF1...
November 1, 2016: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28355260/increased-trefoil-factor-2-levels-in-patients-with-chronic-kidney-disease
#4
Diana Lebherz-Eichinger, Bianca Tudor, Hendrik J Ankersmit, Thomas Reiter, Martin Haas, Elisa Einwallner, Franziska Roth-Walter, Claus G Krenn, Georg A Roth
In chronically damaged tissue, trefoil factor family (TFF) peptides ensure epithelial protection and restitution. In chronic kidney disease (CKD), TFF1 and TFF2 are reported to be upregulated. Especially in the early phase, CKD is associated with silently ongoing renal damage and inflammation. Moreover, many patients are diagnosed late during disease progression. We therefore sought to investigate the potential of TFF2 as biomarker for CKD. We followed 118 patients suffering from predialysis CKD and 23 healthy volunteers...
2017: PloS One
https://www.readbyqxmd.com/read/28281307/integrated-expression-analysis-identifies-transcription-networks-in-mouse-and-human-gastric-neoplasia
#5
Zheng Chen, Mohammed Soutto, Bushra Rahman, Muhammad W Fazili, DunFa Peng, Maria Blanca Piazuelo, Heidi Chen, M Kay Washington, Yu Shyr, Wael El-Rifai
Gastric cancer (GC) is a leading cause of cancer-related deaths worldwide. The Tff1 knockout (KO) mouse model develops gastric lesions that include low-grade dysplasia (LGD), high-grade dysplasia (HGD), and adenocarcinomas. In this study, we used Affymetrix microarrays gene expression platforms for analysis of molecular signatures in the mouse stomach [Tff1-KO (LGD) and Tff1 wild-type (normal)] and human gastric cancer tissues and their adjacent normal tissue samples. Combined integrated bioinformatics analysis of mouse and human datasets indicated that 172 genes were consistently deregulated in both human gastric cancer samples and Tff1-KO LGD lesions (P < ...
July 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28150071/heterodimeric-interaction-between-gkn2-and-tff1-entails-synergistic-antiproliferative-and-pro-apoptotic-effects-on-gastric-cancer-cells
#6
Olga Kim, Jung Hwan Yoon, Won Suk Choi, Hassan Ashktorab, Duane T Smoot, Suk Woo Nam, Jung Young Lee, Won Sang Park
BACKGROUND: GKN2 and TFF1 form a heterodimer that is only generated in the mucus-secreting cells of the normal stomach. The formation of this heterodimer is frequently disrupted in gastric cancer. However, the precise roles of GKN2 alone and in the heterodimer with TFF1 as well as the contributions of GKN2 and the heterodimer to gastric carcinogenesis are poorly understood. METHODS: Cell viability, proliferation, and apoptosis were analyzed in AGS, MKN1, MKN28, and MKN45 gastric cancer cells transfected with GKN2 and/or TFF1 using MTT, BrdU incorporation, and apoptosis assays, respectively...
February 1, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28143986/expression-of-biomarkers-cxcr4-il11-ra-tff1-mlf1p-in-advanced-breast-cancer-patients-with-bone-metastatic-a-diagnostic-study
#7
Cosphiadi Irawan, Djumhana Atmakusumah, Nurjati Chaeranie Siregar, The Bin Tean, Lim Weng Kong, Ong Choon Kiat, Abdulmuthalib Abdulmuthalib, Alida Harahap, Muchtaruddin Mansyur
AIM: to analyze expression of biomarkers CXCR4, IL11-RA, TFF1 and MLF1P, and clinicopathology in advanced breast cancer patients with bone metastatic. METHODS: this is a cross-sectional study. Analysis was done against a total of 92 breast cancer patients, including 46 bone metastatic patients and 46 non-bone metastatic patients. Immunohistochemistry and microarray analysis was performed in 81 formalin fixed paraffin embedded (FFPE) samples from 81 patients were used...
October 2016: Acta Medica Indonesiana
https://www.readbyqxmd.com/read/28104986/expression-of-trefoil-factors-and-twist1-in-colorectal-cancer-and-their-correlation-with-metastatic-potential-and-prognosis
#8
Akram Yusup, Bailikezi Huji, Cheng Fang, Fei Wang, Tuerxunjiang Dadihan, Hai-Jiang Wang, Halmurat Upur
AIM: To detect the expression of trefoil factors (TFFs) and TWIST1 in colorectal cancer (CRC) and analyze their correlation with metastasis and survival. METHODS: This study examined the expression of TFF1, TFF3 and TWIST1 in a total of 75 tumor samples, 47 matched normal samples (15 cm from the lesion margin), 30 metastatic lymph nodes, and 10 liver metastatic cancer samples from patients with CRC. The relationship was then analyzed between the protein expression and different clinical records...
January 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27992733/trefoil-factor-peptides-and-gastrointestinal-function
#9
Eitaro Aihara, Kristen A Engevik, Marshall H Montrose
Trefoil factor (TFF) peptides, with a 40-amino acid motif and including six conserved cysteine residues that form intramolecular disulfide bonds, are a family of mucin-associated secretory molecules mediating many physiological roles that maintain and restore gastrointestinal (GI) mucosal homeostasis. TFF peptides play important roles in response to GI mucosal injury and inflammation. In response to acute GI mucosal injury, TFF peptides accelerate cell migration to seal the damaged area from luminal contents, whereas chronic inflammation leads to increased TFF expression to prevent further progression of disease...
February 10, 2017: Annual Review of Physiology
https://www.readbyqxmd.com/read/27921407/trefoil-factor-family-1-is-involved-in-airway-remodeling-of-mustard-lung
#10
Mohammad Reza Nourani, Zahra Farajpour, Ali Najafi, Abbas Ali Imani Fooladi
Human airway is generally destructed by inhaled factors and is the barrier to the external environment and has a crucial role in protection of the internal homeostasis of the lung. Sulfur mustard (SM) is a chemical warfare that capable of producing severe chemical injuries primarily in the lungs. Trefoil factor family (TFFs) plays major roles in epithelial repair and homeostasis, particularly in the lung. This study attempted to verify the role of TFFs in airway that induced by sulfur mustard. Fifteen patients exposed to SM and 10 non-exposed subjects were enrolled in this study...
August 2016: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/27832633/increased-cerebral-tff1-expression-in-two-murine-models-of-neuroinflammation
#11
Eva B Znalesniak, Ting Fu, Karina Guttek, Ulrike Händel, Dirk Reinhold, Werner Hoffmann
BACKGROUND/AIMS: The trefoil factor family (TFF) peptide TFF1 is a typical secretory product of the gastric mucosa and a very low level of expression occurs in nearly all regions of the murine brain. TFF1 possesses a lectin activity and binding to a plethora of transmembrane glycoproteins could explain the diverse biological effects of TFF1 (e.g., anti-apoptotic effect). It was the aim to test whether TFF expression is changed during neuroinflammation. METHODS: Expression profiling was performed using semi-quantitative RT-PCR analyses in two murine models of neuroinflammation, i...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27731922/inducible-gene-modification-in-the-gastric-epithelium-of-tff1-creert2-tff2-rtta-tff3-luc-mice
#12
Stefan Thiem, Moritz F Eissmann, Emma Stuart, Joachim Elzer, Anna Jonas, Michael Buchert, Matthias Ernst
Temporal and spatial regulation of genes mediated by tissue-specific promoters and conditional gene expression systems provide a powerful tool to study gene function in health, disease, and during development. Although transgenic mice expressing the Cre recombinase in the gastric epithelium have been reported, there is a lack of models that allow inducible and reversible gene modification in the stomach. Here, we exploited the gastrointestinal epithelium-specific expression pattern of the three trefoil factor (Tff) genes and bacterial artificial chromosome transgenesis to generate a novel mouse strain that expresses the CreERT2 recombinase and the reverse tetracycline transactivator (rtTA)...
December 2016: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/27731893/trefoil-factor-peptide-3-is-positively-correlated-with-the-viscoelastic-properties-of-the-cervical-mucus-plug
#13
Sara K Bastholm, Mie H Samson, Naja Becher, Lea K Hansen, Peter R Stubbe, Ioannis S Chronakis, Ebba Nexo, Niels Uldbjerg
INTRODUCTION: The viscoelastic properties of the cervical mucus plug are considered essential for the occlusion of the cervical canal and thereby for protection against ascending infections during pregnancy. Factors controlling this property are virtually unknown. This study explores a possible role of trefoil factor peptides 1, 2 and 3 (TFF1-3); peptides believed to influence mucus viscosity. MATERIAL AND METHODS: The study is based on spontaneously shed cervical mucus plugs from 14 women in active labor...
January 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/27641443/progesterone-induces-progesterone-receptor-gene-pgr-expression-via-rapid-activation-of-protein-kinase-pathways-required-for-cooperative-estrogen-receptor-alpha-er-and-progesterone-receptor-pr-genomic-action-at-er-pr-target-genes
#14
Caroline H Diep, Hannah Ahrendt, Carol A Lange
Progesterone Receptors (PRs) are critical effectors of estrogen receptor (ER) signaling required for mammary gland development and reproductive proficiency. In breast and reproductive tract malignancies, PR expression is a clinical prognostic marker of ER action. While estrogens primarily regulate PR expression, other factors likely contribute to a dynamic range of receptor expression across diverse tissues. In this study, we identified estrogen-independent but progestin (R5020)-dependent regulation of ER target genes including PGR in ER+/PR+ cancer cell lines...
October 2016: Steroids
https://www.readbyqxmd.com/read/27598141/aberrant-jak-stat-signaling-suppresses-tff1-and-tff2-through-epigenetic-silencing-of-gata6-in-gastric-cancer
#15
Cheng-Shyong Wu, Kuo-Liang Wei, Jian-Liang Chou, Chung-Kuang Lu, Ching-Chuan Hsieh, Jora M J Lin, Yi-Fang Deng, Wan-Ting Hsu, Hui-Min David Wang, Chung-Hang Leung, Dik-Lung Ma, Chin Li, Michael W Y Chan
Aberrant Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signaling is crucial to the development of gastric cancer. In this study, we examined the role of STAT3 in the expression and methylation of its targets in gastric cancer patients. Results from RNA sequencing identified an inverse correlation between the expression of STAT3 and GATA6 in 23 pairs of gastric cancer patient samples. We discovered that the expression of GATA6 is epigenetically silenced through promoter methylation in gastric cancer cell lines...
September 2, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27592112/birc5-survivin-a-pejorative-prognostic-marker-in-stage-ii-iii-breast-cancer-with-no-response-to-neoadjuvant-chemotherapy
#16
A S Hamy, I Bieche, J Lehmann-Che, V Scott, Ph Bertheau, J M Guinebretière, M C Matthieu, B Sigal-Zafrani, O Tembo, M Marty, B Asselain, F Spyratos, P de Cremoux
PURPOSE: Neoadjuvant systemic therapy (NAC) is currently used in the treatment of stage II/III breast cancer. Pathological complete response as a surrogate endpoint for clinical outcomes is not completely validated for all subgroups of breast cancers. Therefore, there is a need for reliable predictive tests of the most effective treatment. METHODS: We used a combination of predictive clinical, pathological, and gene expression-based markers of response to NAC in a prospective phase II multicentre randomized clinical trial in breast cancer patients, with a long follow-up (8 years)...
October 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27546365/trefoil-factor-3-tff3-from-human-breast-milk-activates-par-2-receptors-of-the-intestinal-epithelial-cells-ht-29-regulating-cytokines-and-defensins
#17
G J Barrera, G Sanchez Tortolero
Trefoil factors are effector molecules in gastrointestinal tract physiology. Each one improves healing of the gastrointestinal tract. Trefoil factors may be grouped into three classes: the gastric peptides (TFF1), spasmolytic peptide (TFF2) and intestinal trefoil factor (TFF3). Significant amounts of TFF3 are present in human breast milk. Previously, we have reported that trefoil factor 3 isolated from human breast milk produces down regulation of cytokines and promotes human beta defensins expression in intestinal epithelial cells...
2016: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/27527851/nucleophosmin-b23-is-a-negative-regulator-of-estrogen-receptor-%C3%AE-expression-via-ap2%C3%AE-in-endometrial-cancer-cells
#18
Chiao-Yun Lin, Angel Chao, Tzu-Hao Wang, Li-Yu Lee, Lan-Yan Yang, Chia-Lung Tsai, Hsin-Shih Wang, Chyong-Huey Lai
Endometrial cancers expressing estrogen and progesterone receptors respond to hormonal therapy. The disappearance of steroid hormone receptor expression is common in patients with recurrent disease, ultimately hampering the clinical utility of hormonal therapy. Here, we demonstrate for the first time that nucleophosmin (NPM1/B23) suppression can restore the expression of estrogen receptor α (ESR1/ERα) in endometrial cancer cells. Mechanistically, B23 and activator protein-2γ (TFAP2C/AP2γ) form a complex that acts as a transcriptional repressor of ERα...
September 13, 2016: Oncotarget
https://www.readbyqxmd.com/read/27523981/loss-of-trefoil-factor-2-from-pancreatic-duct-glands-promotes-formation-of-intraductal-papillary-mucinous-neoplasms-in-mice
#19
Junpei Yamaguchi, Mari Mino-Kenudson, Andrew S Liss, Sanjib Chowdhury, Timothy C Wang, Carlos Fernández-Del Castillo, Keith D Lillemoe, Andrew L Warshaw, Sarah P Thayer
BACKGROUND & AIMS: Little is known about the origin of pancreatic intraductal papillary mucinous neoplasms (IPMN). Pancreatic duct glands (PDGs) are gland-like outpouches budding off the main pancreatic ducts that function as a progenitor niche for the ductal epithelium; they express gastric mucins and have characteristics of side-branch IPMNs. We investigated whether PDGs are a precursor compartment for IPMNs and the role of Trefoil factor family 2 (TFF2)-a protein expressed by PDGs and the gastric mucosa that are involved in epithelial repair and tumor suppression...
December 2016: Gastroenterology
https://www.readbyqxmd.com/read/27522676/c-ebp%C3%AE-regulates-homeostatic-and-oncogenic-gastric-cell-proliferation
#20
Goncalo Regalo, Susann Förster, Carlos Resende, Bianca Bauer, Barbara Fleige, Wolfgang Kemmner, Peter M Schlag, Thomas F Meyer, José C Machado, Achim Leutz
Cancer of the stomach is among the leading causes of death from cancer worldwide. The transcription factor C/EBPβ is frequently overexpressed in gastric cancer and associated with the suppression of the differentiation marker TFF1. We show that the murine C/EBPβ knockout stomach displays unbalanced homeostasis and reduced cell proliferation and that tumorigenesis of human gastric cancer xenograft is inhibited by knockdown of C/EBPβ. Cross-species comparison of gene expression profiles between C/EBPβ-deficient murine stomach and human gastric cancer revealed a subset of tumors with a C/EBPβ signature...
December 2016: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
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