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Gata6

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https://www.readbyqxmd.com/read/29666070/gata4-dependent-differentiation-of-c-kit-derived-endothelial-cells-underlies-artefactual-cardiomyocyte-regeneration-in-the-heart
#1
Bryan D Maliken, Onur Kanisicak, Jason Karch, Hadi Khalil, Xing Fu, Justin G Boyer, Vikram Prasad, Yi Zheng, Jeffery D Molkentin
Background -While c-Kit+ adult progenitor cells were initially reported to produce new cardiomyocytes in the heart, recent genetic evidence suggests that such events are exceedingly rare. However, to determine if these rare events represent true de novo cardiomyocyte formation we deleted the necessary cardiogenic transcription factors Gata4 and Gata6 from c-Kit-expressing cardiac progenitor cells (CPCs). Methods - Kit allele-dependent lineage tracing and fusion analysis was performed in mice following simultaneous Gata4 and Gata6 cell-type specific deletion to examine rates of putative de novo cardiomyocyte formation from c-Kit+ cells...
April 17, 2018: Circulation
https://www.readbyqxmd.com/read/29653232/gata6-loss-of-function-mutation-contributes-to-congenital-bicuspid-aortic-valve
#2
Ying-Jia Xu, Ruo-Min Di, Qi Qiao, Xiu-Mei Li, Ri-Tai Huang, Song Xue, Xing-Yuan Liu, Juan Wang, Yi-Qing Yang
Congenital bicuspid aortic valve (BAV), the most common form of birth defect in humans, is associated with substantial morbidity and mortality. Increasing evidence demonstrates that genetic risk factors play a key role in the pathogenesis of BAV. However, BAV is a genetically heterogeneous disease and the genetic determinants underpinning BAV in an overwhelming majority of patients remain unknown. In the present study, the coding exons and flanking introns of the GATA6 gene, which encodes a zinc-finger transcription factor essential for the normal development of the aortic valves, were sequenced in 152 unrelated patients with congenital BAV...
April 10, 2018: Gene
https://www.readbyqxmd.com/read/29618745/differences-in-dna-methylation-and-functional-expression-in-lactase-persistent-and-non-persistent-individuals
#3
Milena N Leseva, Richard J Grand, Hagen Klett, Melanie Boerries, Hauke Busch, Alexandra M Binder, Karin B Michels
In humans the expression of lactase changes during post-natal development, leading to phenotypes known as lactase persistence and non-persistence. Polymorphisms within the lactase gene (LCT) enhancer, in particular the -13910C > T, but also others, are linked to these phenotypes. We were interested in identifying dynamic mediators of LCT regulation, beyond the genotype at -13910C > T. To this end, we investigated two levels of lactase regulation in human intestinal samples obtained from New England children and adolescents of mixed European ancestry: differential expression of transcriptional regulators of LCT, and variations in DNA methylation, and their relation to phenotype...
April 4, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29615149/mir-455-functions-as-a-tumor-suppressor-through-targeting-gata6-in-colorectal-cancer
#4
Hua Yunqi, Yin Fangrui, Yang Yongyan, Jin Yunjian, Zhang Wenhui, Cao Kun, Li Min, Liu Xianfeng, Ba Caixia
Emerging evidence indicates microRNAs (miRNAs) are often aberrantly expressed in human cancers. Meanwhile, the importance of miRNAs in regulating multiplies cellular biological processes has been appreciated. The aim of this study was to investigate the significance of miR-455 and identify its possible mechanism in regulating colorectal cancer (CRC) progression. We found the expression of miR-455 was sharply reduced in CRC tissues and cell lines. Importantly, the low expression of miR-455 was associated with poor overall survival of CRC patients...
April 3, 2018: Oncology Research
https://www.readbyqxmd.com/read/29567669/gata6-regulates-aortic-valve-remodeling-and-its-haploinsufficiency-leads-to-rl-type-bicuspid-aortic-valve
#5
Lara Gharibeh, Hiba Komati, Yohan Bossé, Munir Boodhwani, Mahyar Heydarpour, Megan Fortier, Romina Hassandazeh, Janet Ngu, Patrick Mathieu, Simon Body, Mona Nemer
Background -Bicuspid aortic valve (BAV), the most common congenital heart defect affecting 1-2% of the population, is a major risk factor for premature aortic valve disease and accounts for the majority of valve replacement. The genetic basis and the mechanisms of BAV etiology and pathogenesis remain largely undefined. Methods -Cardiac structure and function was assessed in mice lacking a Gata6 allele. Human GATA6 gene variants were analyzed in 452 BAV cases from the BAV consortium and 1849 controls from the Framingham GWAS study...
March 22, 2018: Circulation
https://www.readbyqxmd.com/read/29544631/gata-regulation-and-function-during-the-ovarian-life-cycle
#6
Jill Bennett-Toomey, Carlos Stocco
GATA4 and GATA6 are the sole GATA factors expressed in the ovary during embryonic development and adulthood. Up today, GATA4 and GATA6 are the only transcription factors that have been conditionally deleted during ovarian development and at each major stage of follicle maturation. The evidence from these transgenic mice revealed that GATA4 and GATA6 are crucial for follicles assembly, granulosa cell differentiation, postnatal follicle growth, and luteinization. Thus, conditional knockdown of both factors in the granulosa cells at any stage of development leads to female infertility...
2018: Vitamins and Hormones
https://www.readbyqxmd.com/read/29517349/mir-181a-targets-gata6-to-inhibit-the-progression-of-human-laryngeal-squamous-cell-carcinoma
#7
Xudong Zhao, Wei Zhang, Wenyue Ji
AIM: We sought to determine the function of miR-181a/GATA6 pathway in the progression of laryngeal squamous cell carcinoma (LSCC). MATERIALS & METHODS: The expression of miR-181a and GATA6 were detected using quantitative real-time-PCR and western blotting in 127 LSCC samples and 32 corresponding control mucosa tissues. Cell death, migration and apoptosis were measured in Hep-2 cells using 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT), Transwell migration assay and apoptosis assay, respectively...
March 8, 2018: Future Oncology
https://www.readbyqxmd.com/read/29483258/oct4-pou5f1-is-required-for-nanog-expression-in-bovine-blastocysts
#8
Kilian Simmet, Valeri Zakhartchenko, Julia Philippou-Massier, Helmut Blum, Nikolai Klymiuk, Eckhard Wolf
Mammalian preimplantation development involves two lineage specifications: first, the CDX2-expressing trophectoderm (TE) and a pluripotent inner cell mass (ICM) are separated during blastocyst formation. Second, the pluripotent epiblast (EPI; expressing NANOG) and the differentiated primitive endoderm (PrE; expressing GATA6) diverge within the ICM. Studies in mice revealed that OCT4/POU5F1 is at the center of a pluripotency regulatory network. To study the role of OCT4 in bovine preimplantation development, we generated OCT4 knockout (KO) fibroblasts by CRISPR-Cas9 and produced embryos by somatic cell nuclear transfer (SCNT)...
February 26, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29483232/whole-exome-sequencing-reveals-a-monogenic-cause-of-disease-in-%C3%A2-43-of-35-families-with-midaortic-syndrome
#9
Jillian K Warejko, Markus Schueler, Asaf Vivante, Weizhen Tan, Ankana Daga, Jennifer A Lawson, Daniela A Braun, Shirlee Shril, Kassaundra Amann, Michael J G Somers, Nancy M Rodig, Michelle A Baum, Ghaleb Daouk, Avram Z Traum, Heung Bae Kim, Khashayar Vakili, Diego Porras, James Lock, Michael J Rivkin, Gulraiz Chaudry, Leslie B Smoot, Michael N Singh, Edward R Smith, Shrikant M Mane, Richard P Lifton, Deborah R Stein, Michael A Ferguson, Friedhelm Hildebrandt
Midaortic syndrome (MAS) is a rare cause of severe childhood hypertension characterized by narrowing of the abdominal aorta in children and is associated with extensive vascular disease. It may occur as part of a genetic syndrome, such as neurofibromatosis, or as consequence of a pathological inflammatory disease. However, most cases are considered idiopathic. We hypothesized that in a high percentage of these patients, a monogenic cause of disease may be detected by evaluating whole exome sequencing data for mutations in 1 of 38 candidate genes previously described to cause vasculopathy...
February 26, 2018: Hypertension
https://www.readbyqxmd.com/read/29469192/gata6-positive-lung-adenocarcinomas-are-associated-with-invasive-mucinous-adenocarcinoma-morphology-hnf4%C3%AE-expression-and-kras-mutations
#10
Naoki Nakajima, Akihiko Yoshizawa, Tomoyuki Nakajima, Masahiro Hirata, Ayako Furuhata, Shinji Sumiyoshi, Mariyo Rokutan-Kurata, Makoto Sonobe, Toshi Menju, Ei Miyamoto, Toyofumi F Chen-Yoshikawa, Hiroshi Date, Hironori Haga
AIMS: GATA6 is known to play a role in lung development. However, its role in the carcinogenesis of lung cancer is not well studied. The aim of this study was to analyze GATA6 expression in lung adenocarcinomas (LA) by immunohistochemistry (IHC) to define its association with clinicopathological characteristics. METHODS AND RESULTS: IHC analysis of GATA6 was performed using tissue microarray slides containing 348 LAs. The association between GATA6 expression and clinicopathological parameters was evaluated...
February 22, 2018: Histopathology
https://www.readbyqxmd.com/read/29459264/induction-of-microrna-10a-using-retinoic-acid-receptor-%C3%AE-and-retinoid-x-receptor-%C3%AE-agonists-inhibits-atherosclerotic-lesion-formation
#11
Ding-Yu Lee, Tung-Lin Yang, Yi-Hsuan Huang, Chih-I Lee, Li-Jing Chen, Yu-Tsung Shih, Shu-Yi Wei, Wei-Li Wang, Chih-Cheng Wu, Jeng-Jiann Chiu
BACKGROUND AND AIMS: MicroRNA (miR)-10a is a shear-regulated miR with the lowest expression in vascular endothelial cells (ECs) in athero-susceptible regions with oscillatory shear stress (OS). The aim of this study is to elucidate the relationship between EC miR-10a and atherosclerosis and develop a hemodynamics-based strategy for atherosclerosis treatment. METHODS: A combination of in vitro flow system and in vivo experimental animals was used to examine the functional roles of EC miR-10a and its clinical applications in atherosclerosis...
February 8, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29454706/gata6-phosphorylation-by-erk1-2-propels-exit-from-pluripotency-and-commitment-to-primitive-endoderm
#12
Yue Meng, Robert Moore, Wensi Tao, Elizabeth R Smith, Jeffrey D Tse, Corrado Caslini, Xiang-Xi Xu
The transcription factor GATA6 and the Fgf/Ras/MAPK signaling pathway are essential for the development of the primitive endoderm (PrE), one of the two lineages derived from the pluripotent inner cell mass (ICM) of mammalian blastocysts. A mutant mouse line in which Gata6-coding exons are replaced with H2BGFP (histone H2B Green Fluorescence Protein fusion protein) was developed to monitor Gata6 promoter activity. In the Gata6-H2BGFP heterozygous blastocysts, the ICM cells that initially had uniform GFP fluorescence signal at E3...
February 15, 2018: Developmental Biology
https://www.readbyqxmd.com/read/29445086/the-oncogene-etv5-promotes-met-in-somatic-reprogramming-and-orchestrates-epiblast-primitive-endoderm-specification-during-mescs-differentiation
#13
Jinglong Zhang, Hongxia Cao, Jing Xie, Chen Fan, Youlong Xie, Xin He, Mingzhi Liao, Shiqiang Zhang, Huayan Wang
Unipotent spermatogonial stem cells (SSCs) can be efficiently reprogrammed into pluripotent stem cells only by manipulating the culture condition, without introducing exogenous reprogramming factors. This phenotype raises the hypothesis that the endogenous transcription factors (TFs) in SSCs may facilitate reprogramming to acquire pluripotency. In this study, we screened a pool of SSCs TFs (Bcl6b, Lhx1, Foxo1, Plzf, Id4, Taf4b, and Etv5), and found that oncogene Etv5 could dramatically increase the efficiency of induced pluripotent stem cells (iPSCs) generation when combined with Yamanaka factors...
February 14, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29434936/%C3%AE-catenin-leucine-rich-repeat-containing-g-protein-coupled-receptor-5-and-gata-binding-factor-6-are-associated-with-the-normal-mucosa-adenoma-adenocarcinoma-sequence-of-colorectal-tumorigenesis
#14
Bin Yang, Liang Mao, Yan Li, Qia Li, Xioli Li, Yunjing Zhang, Zhenhua Zhai
In the present study, the expression of β-catenin, leucine-rich repeat-containing G protein-coupled receptor 5 (LGR5) and GATA6 was investigated during the transition from normal mucosa through to adenoma and adenocarcinoma in colorectal tissue sections obtained from 65 patients with a pathological diagnosis of colorectal adenocarcinoma and a history of adenoma. Immunohistochemical staining of β-catenin, LGR5 and GATA6 was performed and evaluated. The nuclear expression of β-catenin and the cytoplasmic expression of LGR5 and GATA6 were increased in samples as they progressed from normal mucosa to adenoma and adenocarcinoma...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29429410/the-human-fetal-adrenal-produces-cortisol-but-no-detectable-aldosterone-throughout-the-second-trimester
#15
Zoe C Johnston, Michelle Bellingham, Panagiotis Filis, Ugo Soffientini, Denise Hough, Siladitya Bhattacharya, Marc Simard, Geoffrey L Hammond, Peter King, Peter J O'Shaughnessy, Paul A Fowler
BACKGROUND: Human fetal adrenal glands are highly active and, with the placenta, regulate circulating progesterone, estrogen and corticosteroids in the fetus. At birth the adrenals are essential for neonate salt retention through secretion of aldosterone, while adequate glucocorticoids are required to prevent adrenal insufficiency. The objective of this study was to carry out the first comprehensive analysis of adrenal steroid levels and steroidogenic enzyme expression in normal second trimester human fetuses...
February 12, 2018: BMC Medicine
https://www.readbyqxmd.com/read/29415247/polycomb-protein-eed-is-required-for-neurogenesis-and-cortical-injury-activation-in-the-subventricular-zone
#16
Bin Sun, Eunhyuk Chang, Anna Gerhartl, Francis G Szele
The postnatal subventricular zone (SVZ) harbors neural stem cells (NSCs) that exhibit robust neurogenesis. However, the epigenetic mechanisms that maintain NSCs and regulate neurogenesis remain unclear. We report that label-retaining SVZ NSCs express Eed, the core component of Polycomb repressive complex 2. In vivo and in vitro conditional knockout and knockdown show Eed is necessary for maintaining NSC proliferation, neurogenesis and neurosphere formation. We discovered that Eed functions to maintain p21 protein levels in NSCs by repressing Gata6 transcription...
February 3, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29402198/the-essential-role-of-gata6-in-the-activation-of-estrogen-synthesis-in-endometriosis
#17
Lia A Bernardi, Matthew T Dyson, Hideki Tokunaga, Christia Sison, Muge Oral, Jared C Robins, Serdar E Bulun
Endometriotic stromal cells synthesize estradiol via the steroidogenic pathway. Nuclear receptor subfamily 5, group A, member 1 (NR5A1) is critical, but alone not sufficient, in activating this cascade that involves at least 5 genes. To evaluate whether another transcription factor is required for the activation of this pathway, we examined whether GATA Binding Protein 6 (GATA6) can transform a normal endometrial stromal cell (NoEM) into an endometriotic-like cell by conferring an estrogen-producing phenotype...
January 1, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29388792/transcription-factor-gata6-a-novel-marker-and-putative-inducer-of-ductal-metaplasia-in-biliary-atresia
#18
Tea Soini, Marjut Pihlajoki, Noora Andersson, Jouko Lohi, Kari A Huppert, David A Rudnick, Stacey S Huppert, David B Wilson, Mikko P Pakarinen, Markku Heikinheimo
Biliary atresia (BA), a neonatal liver disease, is characterized by obstruction of extrahepatic bile ducts with subsequent cholestasis, inflammation, and progressive liver fibrosis. To gain insights into the pathophysiology of BA, we focused attention on GATA6, a transcription factor implicated in biliary development. Early in fetal development GATA6 expression is evident in cholangiocytes and hepatocytes, but by late gestation it is extinguished in hepatocytes. Utilizing a unique set of BA liver samples collected before and after successful portoenterostomy (PE), we found that GATA6 expression is markedly upregulated in hepatocytes of patients with BA compared to healthy and cholestatic disease controls...
February 1, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29367190/progress-of-gata6-in-liver-development
#19
REVIEW
Ling Zhang, Jian-Bo He
GATA binding protein 6 (GATA6) is a member of the GATA family of zinc-finger transcriptional regulators, whose names come from the conservative base sequence (G/A)GATA(A/T). The GATA families play key roles in cell fate determination, proliferation, migration, and organogenesis of endoderm- and mesoderm-derived organs in vertebrates. As a lineage-specific factor, a chromatin remodeling factor, a pluripotent factor and a pioneer factor, GATA6 is involved in various stages of liver development, including endoderm liver-lineage determination, liver specification, hepatic bud outgrowth and hepatoblast differentiation...
January 20, 2018: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/29342503/the-molecular-basis-for-dysregulated-activation-of-nkx2-5-in-vascular-remodelling-of-systemic-sclerosis
#20
Athina Dritsoula, Ioannis Papaioannou, Sandra G Guerra, Carmen Fonseca, Javier Martin, Ariane L Herrick, David J Abraham, Christopher P Denton, Markella Ponticos
OBJECTIVE: NKX2-5 is a homeobox transcription factor required for the formation of the heart and vessels during development, with significant postnatal downregulation and reactivation in disease states characterised by vascular remodelling. In this study, we sought to investigate mechanisms that activate NKX2-5 expression in diseased vessels, such as scleroderma associated pulmonary hypertension (SSc-PH), and identify genetic variability that potentially underlies susceptibility to specific vascular complications...
January 17, 2018: Arthritis & Rheumatology
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