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Tcf7l2

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https://www.readbyqxmd.com/read/29751817/tcf7l2-is-essential-for-neurogenesis-in-the-developing-mouse-neocortex
#1
Olga Chodelkova, Jan Masek, Vladimir Korinek, Zbynek Kozmik, Ondrej Machon
Generation of neurons in the embryonic neocortex is a balanced process of proliferation and differentiation of neuronal progenitor cells. Canonical Wnt signalling is crucial for expansion of radial glial cells in the ventricular zone and for differentiation of intermediate progenitors in the subventricular zone. We detected abundant expression of two transcrtiption factors mediating canonical Wnt signalling, Tcf7L1 and Tcf7L2, in the ventricular zone of the embryonic neocortex. Conditional knock-out analysis showed that Tcf7L2, but not Tcf7L1, is the principal Wnt mediator important for maintenance of progenitor cell identity in the ventricular zone...
May 11, 2018: Neural Development
https://www.readbyqxmd.com/read/29736187/-tcf7l2-correlation-in-both-insulin-secretion-and-postprandial-insulin-sensitivity
#2
Mari Cassol Ferreira, Maria Elizabeth Rossi da Silva, Rosa Tsuneshiro Fukui, Maria do Carmo Arruda-Marques, Rosa Ferreira Dos Santos
Background: The TCF7L2 rs7903146 variant is strongly associated with type 2 diabetes mellitus (T2DM). However, the mechanisms involved in this association remain unknown and may include extrapancreatic effects. The aim of this study was to perform a metabolic characterization of T2DM patients with and without the TCF7L2 rs7903146 risk T allele and analyze some influences of the TCF7L2 genotype on glucose metabolism. Methods: Patients with T2DM ( n  = 162) were genotyped for the TCF7L2 rs7903146 single nucleotide polymorphism...
2018: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/29733821/mir-182-enhances-acute-kidney-injury-by-promoting-apoptosis-involving-the-targeting-and-regulation-of-tcf7l2-wnt-%C3%AE-catenins-pathway
#3
Huicong Li, Yali Ma, Baoping Chen, Jun Shi
Acute kidney injury (AKI)is a sudden decay in renal function leading to increasing morbidity and mortality. miR-182 has been reported to be actively involved in kidney diseases. However, the function and molecular mechanism of miR-182 in AKI still need to be elucidated. The levels of serum creatinine (SCr), blood urea nitrogen (BUN), and urine Kim-1 in I/R-induced rat AKI model were detected by a Beckman Autoanalyzer. miR-182 and transcription factor 7-like-2 (TCF7L2) mRNA expression were measured by qRT-PCR...
May 4, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29717269/multiple-genetic-variations-confer-risks-for-obesity-and-type-2-diabetes-mellitus-in-arab-descendants-from-uae
#4
Wael Osman, Guan K Tay, Habiba Alsafar
BACKGROUND: The United Arab Emirates (UAE) is one of the countries most threatened with obesity. Here we investigated associations between hundreds of single-nucleotide polymorphisms (SNPs) and the following obesity indicators: body mass index (BMI), waist circumference (WC), and height. We also investigated the associations between obesity-related genes with type 2 diabetes mellitus (T2DM). METHODS: We tested 87, 58, and 586 SNPs in a previous genome-wide significance level for associations with BMI (n = 880), WC (n = 455), and height (n = 897), respectively...
March 12, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29713286/the-wnt-signaling-pathway-effector-tcf7l2-mediates-olanzapine-induced-weight-gain-and-insulin-resistance
#5
Ranran Li, Jianjun Ou, Li Li, Ye Yang, Jingping Zhao, Renrong Wu
Olanzapine is a widely used atypical antipsychotic medication for treatment of schizophrenia and is often associated with serious metabolic abnormalities including weight gain and impaired glucose tolerance. These metabolic side effects are severe clinical problems but the underpinning mechanism remains poorly understood. Recently, growing evidence suggests that Wnt signaling pathway has a critical role in the pathogenesis of schizophrenia and molecular cascades of antipsychotics action, of which Wnt signaling pathway key effector TCF7L2 is strongly associated with glucose homeostasis...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29693181/bioinformatics-analysis-of-differentially-expressed-mirna-related-mrnas-and-their-prognostic-value-in-breast-carcinoma
#6
Guo-Ming Zhang, Hemant Goyal, Lei-Lei Song
Breast carcinoma is one of the most common types of malignant neoplasms, and is associated with high rates of morbidity and mortality. Altered gene expression is critical in the development of breast cancer. To identify the important differentially expressed genes and microRNAs in breast carcinoma, mRNA (GSE26910, GSE42568, and GSE89116) and microRNA (GSE35412) microarray datasets were downloaded from the Gene Expression Omnibus database. The differentially expressed microRNA expression data were extracted with GEO2R online software...
April 23, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29678908/the-lim-homeodomain-protein-isl1-mediates-the-function-of-tcf7l2-in-pancreatic-beta-cells
#7
Weijuan Shao, Vivian Szeto, Zhuolun Song, Lili Tian, Zhong-Ping Feng, Cristina M Nostro, Tianru Jin
Pancreatic β-cell Tcf7l2 deletion or its functional knockdown suggested the essential role of this Wnt pathway effector in controlling insulin secretion, glucose homeostasis, and β-cell gene expression. As the LIM homeodomain protein Isl1 is a suggested Wnt pathway downstream target, we hypothesize that it mediates metabolic functions of Tcf7l2. We aimed to determine the role of Isl1 in mediating the function of Tcf7l2 and the incretin hormone GLP-1 in pancreatic β-cells. Effect of dominant negative TCF7L2 (TCF7L2DN) mediated Wnt pathway functional knockdown on Isl1 expression was determined in βTCFDN mouse islets and in the rat insulinoma cell line INS-1 832/13...
April 20, 2018: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29675560/patterns-of-differential-gene-expression-in-a-cellular-model-of-human-islet-development-and-relationship-to-type-2-diabetes-predisposition
#8
Marta Perez-Alcantara, Christian Honoré, Agata Wesolowska-Andersen, Anna L Gloyn, Mark I McCarthy, Mattias Hansson, Nicola L Beer, Martijn van de Bunt
AIMS/HYPOTHESIS: Most type 2 diabetes-associated genetic variants identified via genome-wide association studies (GWASs) appear to act via the pancreatic islet. Observed defects in insulin secretion could result from an impact of these variants on islet development and/or the function of mature islets. Most functional studies have focused on the latter, given limitations regarding access to human fetal islet tissue. Capitalising upon advances in in vitro differentiation, we characterised the transcriptomes of human induced pluripotent stem cell (iPSC) lines differentiated along the pancreatic endocrine lineage, and explored the contribution of altered islet development to the pathogenesis of type 2 diabetes...
April 19, 2018: Diabetologia
https://www.readbyqxmd.com/read/29672952/remodeling-of-muscle-fibres-approaching-the-human-myotendinous-junction
#9
Jens R Jakobsen, Niels R Jakobsen, Abigail L Mackey, Manuel Koch, Michael Kjaer, Michael R Krogsgaard
INTRODUCTION: The myotendinous junction (MTJ) is at high risk of strain injuries, due to high amounts of energy that is transferred through this structure. The risk of strain injury is significantly reduced by heavy resistance training (HRT), indicating a remodeling capacity of MTJ. We investigated the degree of remodeling of muscle fibres near the human MTJ. METHODS: In eight individuals, samples were taken from the semitendinosus and gracilis MTJ and they were stained immunohistochemically for myonuclei (DAPI), fibroblasts (TCF7L2) and satellite cells (CD56)...
April 19, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29652911/pharmacogenetic-landscape-of-metabolic-syndrome-components-drug-response-in-tunisia-and-comparison-with-worldwide-populations
#10
Haifa Jmel, Lilia Romdhane, Yosra Ben Halima, Meriem Hechmi, Chokri Naouali, Hamza Dallali, Yosr Hamdi, Jingxuan Shan, Abdelmajid Abid, Henda Jamoussi, Sameh Trabelsi, Lotfi Chouchane, Donata Luiselli, Sonia Abdelhak, Rym Kefi
Genetic variation is an important determinant affecting either drug response or susceptibility to adverse drug reactions. Several studies have highlighted the importance of ethnicity in influencing drug response variability that should be considered during drug development. Our objective is to characterize the genetic variability of some pharmacogenes involved in the response to drugs used for the treatment of Metabolic Syndrome (MetS) in Tunisia and to compare our results to the worldwide populations. A set of 135 Tunisians was genotyped using the Affymetrix Chip 6...
2018: PloS One
https://www.readbyqxmd.com/read/29620186/the-transcription-factor-7-like-2%C3%A2-binding-protein-tip5-activates-%C3%AE-%C3%A2-catenin-transcription-factor-signaling-in-hepatocellular-carcinoma
#11
Chushi Li, Wei Wu, Hongmei Ding, Qingyang Li, Kangkang Xie
Aberrant activation of β‑catenin/transcription factor 7 like 2 (TCF7L2) signaling is frequently observed during the progression of hepatocellular carcinoma (HCC). However, regulation of the nuclear β‑catenin/TCF7L2 complex remains largely unknown. In the present study, immunoprecipitation and glutathione S‑transferase pull‑down assays identified transcription termination factor‑1 interacting protein 5 (TIP5) as a binding partner of TCF7L2. TIP5 activated β‑catenin/TCF7L2 signaling by enhancing the interaction between β‑catenin and TCF7L2...
March 28, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29608334/genome-wide-dna-methylation-analysis-during-palatal-fusion-reveals-the-potential-mechanism-of-enhancer-methylation-regulating-epithelial-mesenchyme-transformation
#12
Xuan Shu, Shenyou Shu, Hongqiu Cheng, Shijie Tang, Lujun Yang, Haihong Li, Mingjun Zhang, Zhensen Zhu, Dan Liu, Ke Li, Zejun Dong, Liuhanghang Cheng, Jialong Ding
Epithelial mesenchyme transformation (EMT) of the medial edge epithelium (MEE) is the crucial process during palatal fusion. This work is aimed to elucidate the enhancer regulatory mechanism by genome-wide DNA methylation analysis of EMT during palatal fusion. Over 800 million clean reads, 325 million enzyme reads, and 234 million mapping reads were generated. The mapping rate was 68.85-74.32%, which included differentially methylated 17299 CCGG sites and 2363 CCWGG sites (p < 0.05, log2 FC >1). Methylated sites in intron and intergenic regions were more compared to other regions of all DNA elements...
April 2, 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29590649/circulating-lncrnas-analysis-in-patients-with-type-2-diabetes-reveals-novel-genes-influencing-glucose-metabolism-and-islet-%C3%AE-cell-function
#13
Yuting Ruan, Nie Lin, Qiang Ma, Rongping Chen, Zhen Zhang, Weiheng Wen, Hong Chen, Jia Sun
BACKGROUND/AIMS: The islet is an important endocrine organ to secrete insulin to regulate the metabolism of glucose and maintain the stability of blood glucose. Long noncoding RNAs (lncRNAs) are involved in a variety of biological functions and play key roles in many diseases, including type 2 diabetes (T2D). The aim of this study was to determine whether lncRNA-p3134 is associated with glucose metabolism and insulin signaling in pancreatic β cells. METHODS: LncRNA microarray technology was used to identify the differentially expressed circulating lncRNAs in T2D patients...
2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29514658/meta-analysis-of-association-between-tcf7l2-polymorphism-rs7903146-and-type-2-diabetes-mellitus
#14
Weiyue Ding, Li Xu, Lejun Zhang, Zhijie Han, Qinghua Jiang, Zhe Wang, Shuilin Jin
BACKGROUND: Large scale association studies have found a significant association between type 2 diabetes mellitus (T2DM) and transcription factor 7-like 2 (TCF7L2) polymorphism rs7903146. However, the quality of data varies greatly, as the studies report inconsistent results in different populations. Hence, we perform this meta-analysis to give a more convincing result. METHODS: The articles, published from January 1st, 2000 to April 1st, 2017, were identified by searching in PubMed and Google Scholar...
March 7, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29511559/genetic-biopsy-for-prediction-of-surveillance-intervals-after-endoscopic-resection-of-colonic-polyps-results-of-the-genesis-study
#15
Andreas W Berger, Katja Raedler, Cord Langner, Leopold Ludwig, Nektarios Dikopoulos, Karl F Becker, Julia Slotta-Huspenina, Michael Quante, Daniel Schwerdel, Lukas Perkhofer, Alexander Kleger, Eugen Zizer, Franz Oswald, Thomas Seufferlein, Alexander Meining
Background and objective: Current surveillance strategies for colorectal cancer following polypectomy are determined by endoscopic and histopathological factors. Such a distinction has been challenged. The present study was designed to identify molecular parameters in colonic polyps potentially defining new sub-groups at risk. Methods: One hundred patients were enrolled in this multicentre study. Polyps biopsies underwent formalin-free processing (PAXgene, PreAnalytiX) and targeted next generation sequencing (38 genes (QIAGEN), NextSeq 500 platform (Illumina))...
March 2018: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29488276/allelic-variant-in-the-glucagon-like-peptide-1-receptor-gene-associated-with-greater-effect-of-liraglutide-and-exenatide-on-gastric-emptying-a-pilot-pharmacogenetics-study
#16
V Chedid, P Vijayvargiya, P Carlson, K Van Malderen, A Acosta, A Zinsmeister, M Camilleri
BACKGROUND: Weight loss in response to the long-acting GLP-1 receptor (GLP1R) analog, liraglutide, is correlated with delay in gastric-emptying (GE). The aim of this pilot study was to assess whether specific genetic variants in GLP1R or TCF7L2 are associated with delayed GE and weight loss in obese patients treated with liraglutide or the short-acting GLP-1 agonist, exenatide. METHODS: We evaluated in obese individuals the associations of genetic variations of GLP1R (rs6923761) and TCF7L2 (rs7903146) on GE T1/2 and weight from two trials that evaluated separately exenatide, 5 μg BID for 30 days, or liraglutide, 3 mg daily for 5 weeks...
February 28, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29476053/tcf7l2-positively-regulates-aerobic-glycolysis-via-the-egln2-hif-1%C3%AE-axis-and-indicates-prognosis-in-pancreatic-cancer
#17
Jinfeng Xiang, Qiangsheng Hu, Yi Qin, Shunrong Ji, Wenyan Xu, Wensheng Liu, Si Shi, Chen Liang, Jiang Liu, Qingcai Meng, Dingkong Liang, Quanxing Ni, Jin Xu, Bo Zhang, Xianjun Yu
Patients with pancreatic ductal adenocarcinoma have much worse prognoses, and much effort has been directed toward understanding the molecular biological aspects of this disease. Accumulated evidence suggests that constitutive activation of the Wnt/β-catenin signalling contributes to the oncogenesis and progression of pancreatic cancer. Transcription factor 7-like2/transcription factor 4 (TCF7L2/TCF4), a β-catenin transcriptional partner, plays a vital role in the Wnt/β-catenin signalling pathway. In the present study, we investigated the clinicopathological significance of TCF7L2 in pancreatic cancer...
February 23, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29476007/characterization-of-coding-noncoding-variants-for-shroom3-in-patients-with-ckd
#18
Jeremy W Prokop, Nan Cher Yeo, Christian Ottmann, Surya B Chhetri, Kacie L Florus, Emily J Ross, Nadiya Sosonkina, Brian A Link, Barry I Freedman, Candice J Coppola, Chris McDermott-Roe, Seppe Leysen, Lech-Gustav Milroy, Femke A Meijer, Aron M Geurts, Frank J Rauscher, Ryne Ramaker, Michael J Flister, Howard J Jacob, Eric M Mendenhall, Jozef Lazar
Background Interpreting genetic variants is one of the greatest challenges impeding analysis of rapidly increasing volumes of genomic data from patients. For example, SHROOM3 is an associated risk gene for CKD, yet causative mechanism(s) of SHROOM3 allele(s) are unknown. Methods We used our analytic pipeline that integrates genetic, computational, biochemical, CRISPR/Cas9 editing, molecular, and physiologic data to characterize coding and noncoding variants to study the human SHROOM3 risk locus for CKD. Results We identified a novel SHROOM3 transcriptional start site, which results in a shorter isoform lacking the PDZ domain and is regulated by a common noncoding sequence variant associated with CKD (rs17319721, allele frequency: 0...
May 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29473503/genetic-variants-identified-from-gwas-for-predisposition-to-type-2-diabetes-predict-sulfonylurea-drug-response
#19
N M Phani, M Vohra, P Adhikari, S K Nagri, U Shashikiran, S C D'Souza, P R R Kalluri, K Satyamoorthy, P S Rai
BACKGROUND: Several SNPs were identified through GWAS for their association with type 2 diabetes which has implications to pancreatic β-cell physiology. OBJECTIVE: We aimed to study the role of risk alleles of TCF7L2, KCNJ11, CDKN2A, CDKAL1, IGF2BP2, SLC30A8 and KCNQ1 along with pharmacokinetic variants in response to sulfonylureas. METHOD: We performed a prospective study on 209 newly diagnosed subjects; treatment naive T2D subjects were recruited...
2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/29396371/genome-wide-analysis-of-pdx1-target-genes-in-human-pancreatic-progenitors
#20
Xianming Wang, Michael Sterr, Ingo Burtscher, Shen Chen, Anja Hieronimus, Fausto Machicao, Harald Staiger, Hans-Ulrich Häring, Gabriele Lederer, Thomas Meitinger, Filippo M Cernilogar, Gunnar Schotta, Martin Irmler, Johannes Beckers, Martin Hrabě de Angelis, Michael Ray, Christopher V E Wright, Mostafa Bakhti, Heiko Lickert
OBJECTIVE: Homozygous loss-of-function mutations in the gene coding for the homeobox transcription factor (TF) PDX1 leads to pancreatic agenesis, whereas heterozygous mutations can cause Maturity-Onset Diabetes of the Young 4 (MODY4). Although the function of Pdx1 is well studied in pre-clinical models during insulin-producing β-cell development and homeostasis, it remains elusive how this TF controls human pancreas development by regulating a downstream transcriptional program. Also, comparative studies of PDX1 binding patterns in pancreatic progenitors and adult β-cells have not been conducted so far...
March 2018: Molecular Metabolism
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