Homo sapiens
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ABSTRACT:
PROVIDER: PRJNA680730 | ENA |
REPOSITORIES: ENA
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Project description:The microarrays experiments was performed with the purpose of identify transcriptional networks activated by copper. This experiment correspond the work tituled Enterococcus faecalis reconfigure the activation of its transcriptional regulatory networks under different copper exposure levels (work in preparation).Mauricio Latorrea,b, Jessica Galloway-Peñac,d,e, Jung Hyeo Rhoc,d, Marko Budinichf, Barbara E. Murrayc,d,e, Alejandro Maassb,f, Mauricio Gonzáleza,b,f*. a INTA, Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, Santiago, Chile. b Center for Genome Regulation (Fondap 15090007), University of Chile, Santiago, Chile. c Division of Infectious Disease, Department of Medicine, University of Texas Medical School, Houston, Texas, United States of America. d Center for the Study of Emerging and Reemerging Pathogens, University of Texas Medical School, Houston, Texas, United States of America. e Department of Microbiology and Molecular Genetics, University of Texas Medical School, Houston, Texas, United States of America f Mathomics, Center for Mathematical Modeling (UMI2807CNRS), Santiago, Chile. * Corresponding author. Address: El Líbano 5524, Santiago 11, Chile. Fax: +56 (2) 2214030.
2013-11-12 | GSE45131 | GEO
Project description:Pseudomyxoma peritonei (PMP) is a subtype of mucinous adenocarcinoma of the appendix, We compared N-linked glycan profiles of PMP tissues to those of normal appendix. N-glycosidase F liberated N-glycan profiles of eight normal appendix samples and eight low-grade and eight high-grade PMP specimens were analyzed by MALDI-TOF mass spectrometry. The most prominent alteration was increased and complex fucosylation in high-grade carcinoma. Authors: Lilli Saarinen, Pirjo Nummela, Hannele Leinonen, Annamari Heiskanen, Alexandra Thiel, Caj Haglund, Anna Lepistö, Tero Satomaa, Sampsa Hautaniemi, and Ari Ristimäki; from Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki; Glykos Finland Ltd, Helsinki; Department of Surgery, University of Helsinki and Helsinki University Hospital; Translational Cancer Biology, Research Programs Unit, University of Helsinki; and Department of Pathology, HUSLAB, University of Helsinki and Helsinki University Hospital, Finland.
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Project description:Molecular factors governing liver pathology in abcb4 (-/-) mice. Dr. Nakken, Karl Esten, Dr. Berge, Knut E., Dr. Knut J. Labori, Ståle Nygård, Dr. Terese Haaland , professor Morten G. Ræder. Institute for Experimental Medical Research and Department of Pathology, Ulleval University Hospital, Oslo, Norway and Institute for Medical Genetics, National Hospital, Oslo, Norway; E-mail: k.e.nakken@medisin.uio.no. Background and Aims: Abcb4 (mdr2) (-/-) mice secrete phosphatidylcholine-free bile and develop chronic cholangitis. This study aims at identifying differentially transcribed genes that govern liver pathology during this disease. Methods: Hepatic gene transcription was measured in 3, 6, 9 and 20 week old abcb4 (-/-) mice (FVB.129P2-abcb4tm1Bor/J) using cDNA microarrays; FVB/NJ abcb4 (+/+) mice serving as controls. Altered gene transcriptions were verified by real-time polymerase chain reaction. Attention focused on genes coding for chemokines and cytokines of potential pathogenic importance and on matrix housekeeping genes, growth factors and genes regulating wound healing, epithelial morphogenesis and tissue development. Disease phenotype was characterized by histopathology scoring. Results: Transcription of serpina3 genes showed early downregulation. Genes exhibiting upregulated transcription included: Cxcl10, Ccl2, Ccl20, Ctgf, Elf3, Lgals3, Mmp12, Mmp15, Spp1, Loxl2, Pdgfa, Pdgfrb, Sparc, Tgfbi, Tgfbr2. Conclusions: During early phases of chronic cholangitis in abcb4 (-/-) mice, hepatic downregulation of serpina3 genes and enhanced transcription of genes sustaining inflammatory processes contribute to fashioning the portal tract pathology. Later, enhanced transcription of genes governing tissue repair consolidate the portal tract pathology. Keywords: Disease state analysis, time course
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Project description:1Sheng Yushou Center of Cell Biology and Immunology, Department of Genetics and Developmental Biology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China. 2Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, New York, NY 10065, USA. 3Systems Biology Center, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA. 4CCTS Bioinformatic Program, The Rockefeller University, New York, NY 10065, USA. 5State Key Laboratory of Genetic Engineering & Ministry of Education Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai, 200438, China
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Project description:Sixteen paired matched samples from primary breast cancers and brain metastases diagnosed between April 1, 2001 and December 31, 2012 were collected from 8 institutions. Brain metastases were identified based on magnetic resonance imaging and/or computed tomography findings. The clinical characteristics of all the patients were obtained from their medical records. This study was approved by the institutional review board of each participating institute (Tokai University School of Medicine; National Hospital Organization Osaka National Hospital; Kinki University School of Medicine; Niigata Cancer Center Hospital; Shizuoka General Hospital; Hokkaido Cancer Center; National Hospital Organization, Tokyo Medical Center; and Gunma Prefectural Cancer Center). Matching primary breast cancers and brain metastases Formalin-Fixed Paraffin-Embedded (FFPE) specimens for gene expression analysis were collected into RNA. RNA from specimens was isolated, and quantity and quality of the each RNA was using an Agilent 2100 Bioanalyzer (Agilent Technologies). Genome-wide expression levels of transcripts were analyzed using the Affymetrix U133A gene chips (Affymetrix) according to the manufacture’s instructions.
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Project description:Sequencing of 16S ribosomal RNA (rRNA) gene, which has improved the characterization of microbial community, has made it possible to detect a low level Helicobacter pylori (HP) sequences even in HP-negative subjects which were determined by a combination of conventional methods. This study was conducted to obtain a cutoff value for HP colonization in gastric mucosa biopsies and gastric juices by the pyrosequencing method. Corresponding author: Nayoung Kim, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, Gyeonggi-do, Korea; Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea (Tel., +82-31-787-7008; e-mail, nayoungkim49@empas.com).
2014-09-18 | GSE61493 | GEO
Project description:We have sequenced miRNA libraries from human embryonic, neural and foetal mesenchymal stem cells. We report that the majority of miRNA genes encode mature isomers that vary in size by one or more bases at the 3’ and/or 5’ end of the miRNA. Northern blotting for individual miRNAs showed that the proportions of isomiRs expressed by a single miRNA gene often differ between cell and tissue types. IsomiRs were readily co-immunoprecipitated with Argonaute proteins in vivo and were active in luciferase assays, indicating that they are functional. Bioinformatics analysis predicts substantial differences in targeting between miRNAs with minor 5’ differences and in support of this we report that a 5’ isomiR-9-1 gained the ability to inhibit the expression of DNMT3B and NCAM2 but lost the ability to inhibit CDH1 in vitro. This result was confirmed by the use of isomiR-specific sponges. Our analysis of the miRGator database indicates that a small percentage of human miRNA genes express isomiRs as the dominant transcript in certain cell types and analysis of miRBase shows that 5’ isomiRs have replaced canonical miRNAs many times during evolution. This strongly indicates that isomiRs are of functional importance and have contributed to the evolution of miRNA genes Sequence library of miRNAs from a single sample of human foetal mesenchymal stem cells. Results tested and confirmed by northern blotting. Please note that only raw data files are available for the embryonic and neual samples and thus, directly submitted to SRA (SRX547311, SRX548700, respectively under SRP042115/PRJNA247767)
2014-08-06 | E-GEOD-58734 | biostudies-arrayexpress
Project description:The microarrays experiments was performed with the purpose of identify transcriptional networks activated by copper. This experiment correspond the work tituled Enterococcus faecalis reconfigure the activation of its transcriptional regulatory networks under different copper exposure levels (work in preparation).Mauricio Latorrea,b, Jessica Galloway-PeM-CM-1ac,d,e, Jung Hyeo Rhoc,d, Marko Budinichf, Barbara E. Murrayc,d,e, Alejandro Maassb,f, Mauricio GonzM-CM-!leza,b,f*. a INTA, Laboratorio de BioinformM-CM-!tica y ExpresiM-CM-3n GM-CM-)nica, INTA, Universidad de Chile, Santiago, Chile. b Center for Genome Regulation (Fondap 15090007), University of Chile, Santiago, Chile. c Division of Infectious Disease, Department of Medicine, University of Texas Medical School, Houston, Texas, United States of America. d Center for the Study of Emerging and Reemerging Pathogens, University of Texas Medical School, Houston, Texas, United States of America. e Department of Microbiology and Molecular Genetics, University of Texas Medical School, Houston, Texas, United States of America f Mathomics, Center for Mathematical Modeling (UMI2807CNRS), Santiago, Chile. * Corresponding author. Address: El LM-CM--bano 5524, Santiago 11, Chile. Fax: +56 (2) 2214030. A eight chip study (two technical replicates) using total RNA recovered from four separate cultures of: Enterococcus faecalis OG1RF (N medium growth), Enterococcus faecalis OG1RF copM-NM-^T mutant strain (N medium growth), Enterococcus faecalis OG1RF copM-NM-^T mutant low copper treatment (N medium growth + 0.05 mM CuSO4) and Enterococcus faecalis OG1RF copM-NM-^T mutant low copper treatment (N medium growth + 0.5 mM CuSO4). Each chip measures the expression level of 3,114 genome genes from Enterococcus faecalis strain V583 (A7980-00-01).
2013-11-12 | E-GEOD-45131 | biostudies-arrayexpress