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https://www.readbyqxmd.com/read/28511671/erratum-to-investigation-of-the-association-between-the-tcf7l2-rs7903146-c-t-gene-polymorphism-and-obesity-in-a-cameroonian-population-a-pilot-study
#1
Aurelie Nguimmo-Metsadjio, Barbara Atogho-Tiedeu, Jean Jacques Noubiap, Marie-Solange Evehe, Rosine Djokam-Dadjeu, Olivier Sontsa Donfack, Dieudonne Nanfa, Edith Pascale M Mato, Elvis Ndonwi Ngwa, Magellan Guewo-Fokeng, Priscille Pokam-Fosso, Wilfred F Mbacham, Jean Claude Mbanya, Eugene Sobngwi
No abstract text is available yet for this article.
May 16, 2017: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/28499350/transcription-factor-associated-combinatorial-epigenetic-pattern-reveals-higher-transcriptional-activity-of-tcf7l2-regulated-intragenic-enhancers
#2
Qi Liu, Russell Bonneville, Tianbao Li, Victor X Jin
BACKGROUND: Recent studies have suggested that combinations of multiple epigenetic modifications are essential for controlling gene expression. Despite numerous computational approaches have been developed to decipher the combinatorial epigenetic patterns or "epigenetic code", none of them has explicitly addressed the relationship between a specific transcription factor (TF) and the patterns. METHODS: Here, we developed a novel computational method, T-cep, for annotating chromatin states associated with a specific TF...
May 12, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28482944/increased-birth-weight-is-associated-with-altered-gene-expression-in-neonatal-foreskin
#3
L J Reynolds, R I Pollack, R J Charnigo, C S Rashid, A J Stromberg, S Shen, J M O'Brien, K J Pearson
Elevated birth weight is linked to glucose intolerance and obesity health-related complications later in life. No studies have examined if infant birth weight is associated with gene expression markers of obesity and inflammation in a tissue that comes directly from the infant following birth. We evaluated the association between birth weight and gene expression on fetal programming of obesity. Foreskin samples were collected following circumcision, and gene expression analyzed comparing the 15% greatest birth weight infants (n=7) v...
May 9, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28472810/the-long-non-coding-rna-crnde-promotes-colorectal-carcinoma-progression-by-competitively-binding-mir-217-with-tcf7l2-and-enhancing-the-wnt-%C3%AE-catenin-signaling-pathway
#4
Bo Yu, Xuan Ye, Qiong Du, Bin Zhu, Qing Zhai, Xin-Xiang Li
BACKGROUND/AIMS: The long non-coding RNA colorectal neoplasia differentially expressed (CRNDE) contributes to the proliferation and migration of tumors. However, its molecular mechanism underlying gastric cancer remains unknown. In the present study, we investigated whether CRNDE was involved in the development of colorectal cancer via the binding of microRNA (miR)-217 with transcription factor 7-like 2 (TCF7L2) to enhance the Wnt signaling pathway. METHODS: Quantitative polymerase chain reaction was used to detect CRNDE, miR-217 and TCF7L2 in colorectal cancer tissues and cells...
May 4, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28467300/tcf7l1-promotes-skin-tumorigenesis-independently-of-%C3%AE-catenin-through-induction-of-lcn2
#5
Amy T Ku, Timothy M Shaver, Ajay S Rao, Jeffrey M Howard, Christine N Rodriguez, Qi Miao, Gloria Garcia, Diep Le, Diane Yang, Malgorzata Borowiak, Daniel N Cohen, Vida Chitsazzadeh, Abdul H Diwan, Kenneth Y Tsai, Hoang Nguyen
The transcription factor TCF7L1 is an embryonic stem cell signature gene that is upregulated in multiple aggressive cancer types, but its role in skin tumorigenesis has not yet been defined. Here we document TCF7L1 upregulation in skin squamous cell carcinoma (SCC) and demonstrate that TCF7L1 overexpression increases tumor incidence, tumor multiplicity, and malignant progression in the chemically induced mouse model of skin SCC. Additionally, we show that downregulation of TCF7L1 and its paralogue TCF7L2 reduces tumor growth in a xenograft model of human skin SCC...
May 3, 2017: ELife
https://www.readbyqxmd.com/read/28465699/transcription-factor-7-like-2-polymorphism-and-context-specific-risk-of-metabolic-syndrome-type-2-diabetes-and-dyslipidemia
#6
Abbasali Palizban, Mahnaz Rezaei, Hossein Khanahmad, Mohammad Fazilati
BACKGROUND: The transcription factor 7-like 2 gene (TCF7L2) is an element of the Wnt signaling pathway. There is lack of evidence if TCF7L2 has a functional role in lipid metabolism and regulation of the components constitutes the metabolic syndrome (MetSyn). The aims of this study were to evaluate whether the risk allele of TCF7L2 gene polymorphism is associated with dyslipidemia and MetSyn. MATERIALS AND METHODS: The MetSyn subjects were participated only based on the National Cholesterol Education Program - Third Adult Treatment Panel criteria...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28464262/a-tale-of-agriculturalists-and-hunter-gatherers-exploring-the-thrifty-genotype-hypothesis-in-native-south-americans
#7
Guillermo Reales, Diego L Rovaris, Vanessa C Jacovas, Tábita Hünemeier, José R Sandoval, Alcibiades Salazar-Granara, Darío A Demarchi, Eduardo Tarazona-Santos, Aline B Felkl, Michele A Serafini, Francisco M Salzano, Rafael Bisso-Machado, David Comas, Vanessa R Paixão-Côrtes, Maria Cátira Bortolini
OBJECTIVES: To determine genetic differences between agriculturalist and hunter-gatherer southern Native American populations for selected metabolism-related markers and to test whether Neel's thrifty genotype hypothesis (TGH) could explain the genetic patterns observed in these populations. MATERIALS AND METHODS: 375 Native South American individuals from 17 populations were genotyped using six markers (APOE rs429358 and rs7412; APOA2 rs5082; CD36 rs3211883; TCF7L2 rs11196205; and IGF2BP2 rs11705701)...
May 2, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28450117/tcf7l1-recruits-ctbp-and-hdac1-to-repress-dickkopf4-gene-expression-in-human-colorectal-cancer-cells
#8
Melanie A Eshelman, Meera Shah, Wesley M Raup-Konsavage, Sherri A Rennoll, Gregory S Yochum
The T-cell factor/Lymphoid enhancer factor (TCF/LEF; hereafter TCF) family of transcription factors are critical regulators of colorectal cancer (CRC) cell growth. Of the four TCF family members, TCF7L1 functions predominantly as a repressor of gene expression. Few studies have addressed the role of TCF7L1 in CRC and only a handful of target genes regulated by this repressor are known. By silencing TCF7L1 expression in HCT116 cells, we show that it promotes cell proliferation and tumorigenesis in vivo by driving cell cycle progression...
April 25, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28438156/relative-contribution-of-type-1-and-type-2-diabetes-loci-to-the-genetic-etiology-of-adult-onset-non-insulin-requiring-autoimmune-diabetes
#9
Rajashree Mishra, Alessandra Chesi, Diana L Cousminer, Mohammad I Hawa, Jonathan P Bradfield, Kenyaita M Hodge, Vanessa C Guy, Hakon Hakonarson, Didac Mauricio, Nanette C Schloot, Knud B Yderstræde, Benjamin F Voight, Stanley Schwartz, Bernhard O Boehm, Richard David Leslie, Struan F A Grant
BACKGROUND: In adulthood, autoimmune diabetes can present as non-insulin-requiring diabetes, termed as 'latent autoimmune diabetes in adults' (LADA). In this study, we investigated established type 1 diabetes (T1D) and type 2 diabetes (T2D) genetic loci in a large cohort of LADA cases to assess where LADA is situated relative to these two well-characterized, classic forms of diabetes. METHODS: We tested the association of T1D and T2D GWAS-implicated loci in 978 LADA cases and 1057 non-diabetic controls of European ancestry using a linear mixed model...
April 25, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28430825/discovery-and-fine-mapping-of-adiposity-loci-using-high-density-imputation-of-genome-wide-association-studies-in-individuals-of-african-ancestry-african-ancestry-anthropometry-genetics-consortium
#10
Maggie C Y Ng, Mariaelisa Graff, Yingchang Lu, Anne E Justice, Poorva Mudgal, Ching-Ti Liu, Kristin Young, Lisa R Yanek, Mary F Feitosa, Mary K Wojczynski, Kristin Rand, Jennifer A Brody, Brian E Cade, Latchezar Dimitrov, Qing Duan, Xiuqing Guo, Leslie A Lange, Michael A Nalls, Hayrettin Okut, Salman M Tajuddin, Bamidele O Tayo, Sailaja Vedantam, Jonathan P Bradfield, Guanjie Chen, Wei-Min Chen, Alessandra Chesi, Marguerite R Irvin, Badri Padhukasahasram, Jennifer A Smith, Wei Zheng, Matthew A Allison, Christine B Ambrosone, Elisa V Bandera, Traci M Bartz, Sonja I Berndt, Leslie Bernstein, William J Blot, Erwin P Bottinger, John Carpten, Stephen J Chanock, Yii-Der Ida Chen, David V Conti, Richard S Cooper, Myriam Fornage, Barry I Freedman, Melissa Garcia, Phyllis J Goodman, Yu-Han H Hsu, Jennifer Hu, Chad D Huff, Sue A Ingles, Esther M John, Rick Kittles, Eric Klein, Jin Li, Barbara McKnight, Uma Nayak, Barbara Nemesure, Adesola Ogunniyi, Andrew Olshan, Michael F Press, Rebecca Rohde, Benjamin A Rybicki, Babatunde Salako, Maureen Sanderson, Yaming Shao, David S Siscovick, Janet L Stanford, Victoria L Stevens, Alex Stram, Sara S Strom, Dhananjay Vaidya, John S Witte, Jie Yao, Xiaofeng Zhu, Regina G Ziegler, Alan B Zonderman, Adebowale Adeyemo, Stefan Ambs, Mary Cushman, Jessica D Faul, Hakon Hakonarson, Albert M Levin, Katherine L Nathanson, Erin B Ware, David R Weir, Wei Zhao, Degui Zhi, Donna K Arnett, Struan F A Grant, Sharon L R Kardia, Olufunmilayo I Oloapde, D C Rao, Charles N Rotimi, Michele M Sale, L Keoki Williams, Babette S Zemel, Diane M Becker, Ingrid B Borecki, Michele K Evans, Tamara B Harris, Joel N Hirschhorn, Yun Li, Sanjay R Patel, Bruce M Psaty, Jerome I Rotter, James G Wilson, Donald W Bowden, L Adrienne Cupples, Christopher A Haiman, Ruth J F Loos, Kari E North
Genome-wide association studies (GWAS) have identified >300 loci associated with measures of adiposity including body mass index (BMI) and waist-to-hip ratio (adjusted for BMI, WHRadjBMI), but few have been identified through screening of the African ancestry genomes. We performed large scale meta-analyses and replications in up to 52,895 individuals for BMI and up to 23,095 individuals for WHRadjBMI from the African Ancestry Anthropometry Genetics Consortium (AAAGC) using 1000 Genomes phase 1 imputed GWAS to improve coverage of both common and low frequency variants in the low linkage disequilibrium African ancestry genomes...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28420445/investigation-of-the-association-between-the-tcf7l2-rs7903146-c-t-gene-polymorphism-and-obesity-in-a-cameroonian-population-a-pilot-study
#11
Aurelie Nguimmo-Metsadjio, Barbara Atogho-Tiedeu, Jean Jacques Noubiap, Marie-Solange Evehe, Rosine Djokam-Dadjeu, Olivier Sontsa Donfack, Dieudonne Nanfa, Edith Pascale M Mato, Elvis Ndonwi Ngwa, Magellan Guewo-Fokeng, Priscille Pokam-Fosso, Wilfred F Mbacham, Jean Claude Mbanya, Eugene Sobngwi
OBJECTIVE: This study aimed at investigating the association between the rs7903146 (C/T) polymorphism of the TCF7L2 gene with obesity in a Cameroonian population. METHOD: This was a case-control pilot study including 61 obese and 61 non-obese Cameroonian adults. Anthropometric indices of obesity, blood pressure, fasting blood glucose, and blood lipids were measured. The rs7903146 (C/T) polymorphism of the TCF7L2 gene was genotyped using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), and genotypes were correlated with clinical and biological parameters...
April 18, 2017: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/28404897/tcf7l2-polymorphisms-and-the-risk-of-schizophrenia-in-the-chinese-han-population
#12
Lijun Liu, Jingjie Li, Mengdan Yan, Jing Li, Junyu Chen, Yi Zhang, Xikai Zhu, Li Wang, Longli Kang, Dongya Yuan, Tianbo Jin
Single nucleotide polymorphisms (SNPs) in TCF7L2 (Transcription Factor 7-Like 2) reportedly affect susceptibility to schizophrenia (SCZ). We examined the association between TCF7L2 polymorphisms and SCZ susceptibility in a Chinese Han population. Six SNPs were genotyped in 499 SCZ patients and 500 healthy individuals, after which their associations with SCZ were evaluated using the Chi-squared test and genetic model analyses. We observed that the allele A of rs12573128 is associated with an increased SCZ risk (odds ratio [OR] = 1...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28369879/human-skeletal-muscle-fibroblasts-stimulate-in-vitro-myogenesis-and-in-vivo-muscle-regeneration
#13
Abigail L Mackey, Mélanie Magnan, Bénédicte Chazaud, Michael Kjaer
KEY POINTS: Accumulation of skeletal muscle extracellular matrix is an unfavourable characteristic of many muscle diseases, muscle injury and sarcopenia. The extent of cross-talk between fibroblasts, as the source of matrix protein, and satellite cells in humans is unknown. We studied this in human muscle biopsies and cell-culture studies. We observed a strong stimulation of myogenesis by human fibroblasts in cell culture. In biopsies collected 30 days after a muscle injury protocol, fibroblast number increased to four times control levels, where fibroblasts were found to be preferentially located immediately surrounding regenerating muscle fibres...
March 30, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28362475/the-genetic-basis-of-obesity-complications
#14
Katarzyna Skrypnik, Joanna Suliburska, Damian Skrypnik, Łukasz Pilarski, Julita Reguła, Paweł Bogdański
Intensive research is currently being performed into the genetic background of excess body mass compli- cations such as diabetes, cardiovascular disorders, especially atherosclerosis and coronary heart disease. Chronic inflammation is an important process in the pathogenesis of obesity, wherein there is an aberrant ex- pression of genes encoding adipokines. Visceral tissue is characterized by a higher expression and secretion of interleukin-8, interleukin-1ß and plasminogen activator inhibitor 1 in the subcutaneous tissue secretion of leptin prevails...
January 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28352326/genetic-variants-in-kcnj11-tcf7l2-and-hnf4a-are-associated-with-type-2-diabetes-bmi-and-dyslipidemia-in-families-of-northeastern-mexico-a-pilot-study
#15
Hugo Leonid Gallardo-Blanco, Jesus Zacarías Villarreal-Perez, Ricardo Martin Cerda-Flores, Andres Figueroa, Celia Nohemi Sanchez-Dominguez, Juana Mercedes Gutierrez-Valverde, Iris Carmen Torres-Muñoz, Fernando Javier Lavalle-Gonzalez, Esther Carlota Gallegos-Cabriales, Laura Elia Martinez-Garza
The aim of the present study was to investigate whether genetic markers considered risk factors for metabolic syndromes, including dyslipidemia, obesity and type 2 diabetes mellitus (T2DM), can be applied to a Northeastern Mexican population. A total of 37 families were analyzed for 63 single nucleotide polymorphisms (SNPs), and the age, body mass index (BMI), glucose tolerance values and blood lipid levels, including those of cholesterol, low-density lipoprotein (LDL), very LDL (VLDL), high-density lipoprotein (HDL) and triglycerides were evaluated...
February 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28351929/genetic-heterogeneity-in-therapy-na%C3%A3-ve-synchronous-primary-breast-cancers-and-their-metastases
#16
François-Clément Bidard, Charlotte K Y Ng, Salvatore Piscuoglio, Felipe C Geyer, Reymond Lim, Ino De Bruijn, Ronglai Shen, Fresia Pareja, Samuel Berman, Lu Wang, Jean-Yves Pierga, Anne Vincent-Salomon, Agnes Viale, Larry Norton, Brigitte Sigal, Britta Weigelt, Paul Cotu, Jorge S Reis-Filho
PURPOSE: Paired primary breast cancers and metachronous metastases after adjuvant treatment differed in their clonal composition and genetic alterations, but it is unclear whether the differences stem from the selective pressures of the metastatic process, the systemic therapies or both. We sought to define the repertoire of genetic alterations in breast cancer patients with de novo metastatic disease who had not received local or systemic therapy. EXPERIMENTAL DESIGN: Up to two anatomically distinct core biopsies of primary breast cancers and synchronous distant metastases from nine patients who presented with metastatic disease were subjected to high-depth whole-exome sequencing...
March 28, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28343277/pancreatic-alpha-cell-selective-deletion-of-tcf7l2-impairs-glucagon-secretion-and-counter-regulatory-responses-to-hypoglycaemia-in-mice
#17
Gabriela da Silva Xavier, Angeles Mondragon, Vishnou Mourougavelou, Céline Cruciani-Guglielmacci, Jessica Denom, Pedro Luis Herrera, Christophe Magnan, Guy A Rutter
AIMS/HYPOTHESIS: Transcription factor 7-like 2 (TCF7L2) is a high mobility group (HMG) box-containing transcription factor and downstream effector of the Wnt signalling pathway. SNPs in the TCF7L2 gene have previously been associated with an increased risk of type 2 diabetes in genome-wide association studies. In animal studies, loss of Tcf7l2 function is associated with defective islet beta cell function and survival. Here, we explore the role of TCF7L2 in the control of the counter-regulatory response to hypoglycaemia by generating mice with selective deletion of the Tcf7l2 gene in pancreatic alpha cells...
June 2017: Diabetologia
https://www.readbyqxmd.com/read/28343235/transcription-dependent-radial-distribution-of-tcf7l2-regulated-genes-in-chromosome-territories
#18
Keyvan Torabi, Darawalee Wangsa, Immaculada Ponsa, Markus Brown, Anna Bosch, Maria Vila-Casadesús, Tatiana S Karpova, Maria Calvo, Antoni Castells, Rosa Miró, Thomas Ried, Jordi Camps
Human chromosomes occupy distinct territories in the interphase nucleus. Such chromosome territories (CTs) are positioned according to gene density. Gene-rich CTs are generally located in the center of the nucleus, while gene-poor CTs are positioned more towards the nuclear periphery. However, the association between gene expression levels and the radial positioning of genes within the CT is still under debate. In the present study, we performed three-dimensional fluorescence in situ hybridization experiments in the colorectal cancer cell lines DLD-1 and LoVo using whole chromosome painting probes for chromosomes 8 and 11 and BAC clones targeting four genes with different expression levels assessed by gene expression arrays and RT-PCR...
March 25, 2017: Chromosoma
https://www.readbyqxmd.com/read/28330327/role-of-gnb3-net-kcnj11-tcf7l2-and-grl-genes-single-nucleotide-polymorphism-in-the-risk-prediction-of-type-2-diabetes-mellitus
#19
REVIEW
Saliha Rizvi, Syed Tasleem Raza, Qamar Rahman, Farzana Mahdi
Type 2 diabetes (T2DM) is a polygenic metabolic disorder characterized by hyperglycemia occurring as a result of impaired insulin secretion or insulin resistance. Various environmental and genetic factors interact and increase the risk of T2DM and its complications. Among the various genetic factors associated with T2DM, single nucleotide polymorphism in different candidate genes have been studied intensively and the resulting genetic variants have been found to have either positive or negative association with T2DM thereby increasing or decreasing the risk of T2DM, respectively...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28303247/effect-of-wnt-signaling-on-the-differentiation-of-islet-%C3%AE-cells-from-adipose-derived-stem-cells
#20
Hefei Wang, Yu Ren, Xiao Hu, Min Ma, Xiao Wang, Hao Liang, Dongjun Liu
The Wnt signaling is critical for pancreatic development and islet function; however, its precise effects on the development and function of the β-cells remain controversial. Here we examined mRNA and protein expression of components of the Wnt signaling throughout the differentiation of islet β-cells from adipose-derived stem cells (ADSCs). After induction, ADSCs expressed markers of β-cells, including the insulin, PDX1, and glucagon genes, and the PDX1, CK19, nestin, insulin, and C-peptide proteins, indicating their successful differentiation...
2017: BioMed Research International
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