LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 19

Search options

  1. Book ; Audio / Video ; Thesis: Genetic analysis of yeast gene expression that depends on the RNA PolII holoenzyme complex

    Badi, Laura

    2001  

    Author's details Laura Badi
    Language English
    Size 1 CD-ROM, CD-R, 12 cm
    Edition [Elektronische Ressource]
    Document type Book ; Audio / Video ; Thesis
    Thesis / German Habilitation thesis Univ., Diss.--Zürich, 2001
    Note Dateiformat: PDF
    Accompanying material 2 Beil.
    Database Former special subject collection: coastal and deep sea fishing

    More links

    Kategorien

  2. Article ; Online: Using OWL reasoning to support the generation of novel gene sets for enrichment analysis.

    Osumi-Sutherland, David J / Ponta, Enrico / Courtot, Melanie / Parkinson, Helen / Badi, Laura

    Journal of biomedical semantics

    2018  Volume 9, Issue 1, Page(s) 10

    Abstract: Background: The Gene Ontology (GO) consists of over 40,000 terms for biological processes, cell components and gene product activities linked into a graph structure by over 90,000 relationships. It has been used to annotate the functions and cellular ... ...

    Abstract Background: The Gene Ontology (GO) consists of over 40,000 terms for biological processes, cell components and gene product activities linked into a graph structure by over 90,000 relationships. It has been used to annotate the functions and cellular locations of several million gene products. The graph structure is used by a variety of tools to group annotated genes into sets whose products share function or location. These gene sets are widely used to interpret the results of genomics experiments by assessing which sets are significantly over- or under-represented in results lists. F Hoffmann-La Roche Ltd. has developed a bespoke, manually maintained controlled vocabulary (RCV) for use in over-representation analysis. Many terms in this vocabulary group GO terms in novel ways that cannot easily be derived using the graph structure of the GO. For example, some RCV terms group GO terms by the cell, chemical or tissue type they refer to. Recent improvements in the content and formal structure of the GO make it possible to use logical queries in Web Ontology Language (OWL) to automatically map these cross-cutting classifications to sets of GO terms. We used this approach to automate mapping between RCV and GO, largely replacing the increasingly unsustainable manual mapping process. We then tested the utility of the resulting groupings for over-representation analysis.
    Results: We successfully mapped 85% of RCV terms to logical OWL definitions and showed that these could be used to recapitulate and extend manual mappings between RCV terms and the sets of GO terms subsumed by them. We also show that gene sets derived from the resulting GO terms sets can be used to detect the signatures of cell and tissue types in whole genome expression data.
    Conclusions: The rich formal structure of the GO makes it possible to use reasoning to dynamically generate novel, biologically relevant groupings of GO terms. GO term groupings generated with this approach can be used in. over-representation analysis to detect cell and tissue type signatures in whole genome expression data.
    MeSH term(s) Data Mining ; Databases, Genetic ; Gene Ontology ; Neurotransmitter Agents/metabolism ; Synapses/metabolism ; T-Lymphocytes/metabolism
    Chemical Substances Neurotransmitter Agents
    Language English
    Publishing date 2018-02-14
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2548651-2
    ISSN 2041-1480 ; 2041-1480
    ISSN (online) 2041-1480
    ISSN 2041-1480
    DOI 10.1186/s13326-018-0175-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Sodium Iodate-Induced Degeneration Results in Local Complement Changes and Inflammatory Processes in Murine Retina.

    Enzbrenner, Anne / Zulliger, Rahel / Biber, Josef / Pousa, Ana Maria Quintela / Schäfer, Nicole / Stucki, Corinne / Giroud, Nicolas / Berrera, Marco / Kortvely, Elod / Schmucki, Roland / Badi, Laura / Grosche, Antje / Pauly, Diana / Enzmann, Volker

    International journal of molecular sciences

    2021  Volume 22, Issue 17

    Abstract: Age-related macular degeneration (AMD), one of the leading causes of blindness worldwide, causes personal suffering and high socioeconomic costs. While there has been progress in the treatments for the neovascular form of AMD, no therapy is yet available ...

    Abstract Age-related macular degeneration (AMD), one of the leading causes of blindness worldwide, causes personal suffering and high socioeconomic costs. While there has been progress in the treatments for the neovascular form of AMD, no therapy is yet available for the more common dry form, also known as geographic atrophy. We analysed the retinal tissue in a mouse model of retinal degeneration caused by sodium iodate (NaIO
    MeSH term(s) Animals ; Apoptosis/genetics ; Apoptosis/immunology ; Complement System Proteins/genetics ; Complement System Proteins/immunology ; Complement System Proteins/metabolism ; Disease Models, Animal ; Disease Susceptibility ; Fluorescent Antibody Technique ; Gene Expression Regulation/drug effects ; Immunity, Innate ; Immunohistochemistry ; Iodates/adverse effects ; Mice ; Retinal Degeneration/etiology ; Retinal Degeneration/metabolism ; Retinal Degeneration/pathology
    Chemical Substances Iodates ; Complement System Proteins (9007-36-7) ; sodium iodate (U558PCS5Z9)
    Language English
    Publishing date 2021-08-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms22179218
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Correction to: Detect tissue heterogeneity in gene expression data with BioQC.

    Zhang, Jitao David / Hatje, Klas / Sturm, Gregor / Broger, Clemens / Ebeling, Martin / Burtin, Martine / Terzi, Fabiola / Pomposiello, Silvia Ines / Badi, Laura

    BMC genomics

    2018  Volume 19, Issue 1, Page(s) 558

    Abstract: After the publication of this work [1], a mistake was noticed in the Eq. 1. Given an m  ×  n expression matrix with m genes and samples of n tissues, the correct definition of the Gini index for gene i is. ...

    Abstract After the publication of this work [1], a mistake was noticed in the Eq. 1. Given an m  ×  n expression matrix with m genes and samples of n tissues, the correct definition of the Gini index for gene i is.
    Language English
    Publishing date 2018-07-30
    Publishing country England
    Document type Journal Article ; Published Erratum
    ISSN 1471-2164
    ISSN (online) 1471-2164
    DOI 10.1186/s12864-018-4940-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Besca, a single-cell transcriptomics analysis toolkit to accelerate translational research.

    Mädler, Sophia Clara / Julien-Laferriere, Alice / Wyss, Luis / Phan, Miroslav / Sonrel, Anthony / Kang, Albert S W / Ulrich, Eric / Schmucki, Roland / Zhang, Jitao David / Ebeling, Martin / Badi, Laura / Kam-Thong, Tony / Schwalie, Petra C / Hatje, Klas

    NAR genomics and bioinformatics

    2021  Volume 3, Issue 4, Page(s) lqab102

    Abstract: Single-cell RNA sequencing (scRNA-seq) revolutionized our understanding of disease biology. The promise it presents to also transform translational research requires highly standardized and robust software workflows. Here, we present the ... ...

    Abstract Single-cell RNA sequencing (scRNA-seq) revolutionized our understanding of disease biology. The promise it presents to also transform translational research requires highly standardized and robust software workflows. Here, we present the toolkit
    Language English
    Publishing date 2021-11-08
    Publishing country England
    Document type Journal Article
    ISSN 2631-9268
    ISSN (online) 2631-9268
    DOI 10.1093/nargab/lqab102
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Cardiac spheroids as promising in vitro models to study the human heart microenvironment.

    Polonchuk, Liudmila / Chabria, Mamta / Badi, Laura / Hoflack, Jean-Christophe / Figtree, Gemma / Davies, Michael J / Gentile, Carmine

    Scientific reports

    2017  Volume 7, Issue 1, Page(s) 7005

    Abstract: Three-dimensional in vitro cell systems are a promising alternative to animals to study cardiac biology and disease. We have generated three-dimensional in vitro models of the human heart ("cardiac spheroids", CSs) by co-culturing human primary or iPSC- ... ...

    Abstract Three-dimensional in vitro cell systems are a promising alternative to animals to study cardiac biology and disease. We have generated three-dimensional in vitro models of the human heart ("cardiac spheroids", CSs) by co-culturing human primary or iPSC-derived cardiomyocytes, endothelial cells and fibroblasts at ratios approximating those present in vivo. The cellular organisation, extracellular matrix and microvascular network mimic human heart tissue. These spheroids have been employed to investigate the dose-limiting cardiotoxicity of the common anti-cancer drug doxorubicin. Viability/cytotoxicity assays indicate dose-dependent cytotoxic effects, which are inhibited by the nitric oxide synthase (NOS) inhibitor L-NIO, and genetic inhibition of endothelial NOS, implicating peroxynitrous acid as a key damaging agent. These data indicate that CSs mimic important features of human heart morphology, biochemistry and pharmacology in vitro, offering a promising alternative to animals and standard cell cultures with regard to mechanistic insights and prediction of toxic effects in human heart tissue.
    MeSH term(s) Antineoplastic Agents/toxicity ; Cell Survival/drug effects ; Doxorubicin/toxicity ; Endothelial Cells/drug effects ; Endothelial Cells/physiology ; Fibroblasts/drug effects ; Fibroblasts/physiology ; Heart/drug effects ; Heart/physiology ; Humans ; Models, Biological ; Myocytes, Cardiac/drug effects ; Myocytes, Cardiac/physiology ; Spheroids, Cellular/drug effects ; Spheroids, Cellular/physiology
    Chemical Substances Antineoplastic Agents ; Doxorubicin (80168379AG)
    Language English
    Publishing date 2017-08-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-017-06385-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Detect tissue heterogeneity in gene expression data with BioQC.

    Zhang, Jitao David / Hatje, Klas / Sturm, Gregor / Broger, Clemens / Ebeling, Martin / Burtin, Martine / Terzi, Fabiola / Pomposiello, Silvia Ines / Badi, Laura

    BMC genomics

    2017  Volume 18, Issue 1, Page(s) 277

    Abstract: Background: Gene expression data can be compromised by cells originating from other tissues than the target tissue of profiling. Failures in detecting such tissue heterogeneity have profound implications on data interpretation and reproducibility. A ... ...

    Abstract Background: Gene expression data can be compromised by cells originating from other tissues than the target tissue of profiling. Failures in detecting such tissue heterogeneity have profound implications on data interpretation and reproducibility. A computational tool explicitly addressing the issue is warranted.
    Results: We introduce BioQC, a R/Bioconductor software package to detect tissue heterogeneity in gene expression data. To this end BioQC implements a computationally efficient Wilcoxon-Mann-Whitney test and provides more than 150 signatures of tissue-enriched genes derived from large-scale transcriptomics studies. Simulation experiments show that BioQC is both fast and sensitive in detecting tissue heterogeneity. In a case study with whole-organ profiling data, BioQC predicted contamination events that are confirmed by quantitative RT-PCR. Applied to transcriptomics data of the Genotype-Tissue Expression (GTEx) project, BioQC reveals clustering of samples and suggests that some samples likely suffer from tissue heterogeneity.
    Conclusions: Our experience with gene expression data indicates a prevalence of tissue heterogeneity that often goes unnoticed. BioQC addresses the issue by integrating prior knowledge with a scalable algorithm. We propose BioQC as a first-line tool to ensure quality and reproducibility of gene expression data.
    MeSH term(s) Algorithms ; Animals ; Dogs ; Gene Expression Profiling ; Humans ; Mice ; Organ Specificity ; Reproducibility of Results ; Software ; Transcriptome
    Language English
    Publishing date 2017-04-04
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2041499-7
    ISSN 1471-2164 ; 1471-2164
    ISSN (online) 1471-2164
    ISSN 1471-2164
    DOI 10.1186/s12864-017-3661-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Functional analysis and transcriptional output of the Göttingen minipig genome

    Heckel, Tobias / Schmucki, Roland / Berrera, Marco / Ringshandl, Stephan / Badi, Laura / Steiner, Guido / Ravon, Morgane / Küng, Erich / Kuhn, Bernd / Kratochwil, Nicole A. / Schmitt, Georg / Kiialainen, Anna / Nowaczyk, Corinne / Daff, Hamina / Khan, Azinwi Phina / Lekolool, Isaac / Pellé, Roger / Okoth, Edward A. / Bishop, Richard P. /
    Daubenberger, Claudia A. / Ebeling, Martin / Certa, Ulrich

    BMC Genomics

    2023  

    Keywords analysis ; functional analysis
    Publishing date 2023-03-10T14:36:23Z
    Publisher Springer
    Publishing country fr
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article ; Online: DDR1 role in fibrosis and its pharmacological targeting.

    Moll, Solange / Desmoulière, Alexis / Moeller, Marcus J / Pache, Jean-Claude / Badi, Laura / Arcadu, Filippo / Richter, Hans / Satz, Alexander / Uhles, Sabine / Cavalli, Andrea / Drawnel, Faye / Scapozza, Leonardo / Prunotto, Marco

    Biochimica et biophysica acta. Molecular cell research

    2019  Volume 1866, Issue 11, Page(s) 118474

    Abstract: Discoidin domain receptor1 (DDR1) is a collagen activated receptor tyrosine kinase and an attractive anti-fibrotic target. Its expression is mainly limited to epithelial cells located in several organs including skin, kidney, liver and lung. DDR1's ... ...

    Abstract Discoidin domain receptor1 (DDR1) is a collagen activated receptor tyrosine kinase and an attractive anti-fibrotic target. Its expression is mainly limited to epithelial cells located in several organs including skin, kidney, liver and lung. DDR1's biology is elusive, with unknown downstream activation pathways; however, it may act as a mediator of the stromal-epithelial interaction, potentially controlling the activation state of the resident quiescent fibroblasts. Increased expression of DDR1 has been documented in several types of cancer and fibrotic conditions including skin hypertrophic scars, idiopathic pulmonary fibrosis, cirrhotic liver and renal fibrosis. The present review article focuses on: a) detailing the evidence for a role of DDR1 as an anti-fibrotic target in different organs, b) clarifying DDR1 tissue distribution in healthy and diseased tissues as well as c) exploring DDR1 protective mode of action based on literature evidence and co-authors experience; d) detailing pharmacological efforts attempted to drug this subtle anti-fibrotic target to date.
    MeSH term(s) Animals ; Atherosclerosis/metabolism ; Discoidin Domain Receptor 1/drug effects ; Discoidin Domain Receptor 1/metabolism ; Epithelial Cells/metabolism ; Epithelial Cells/pathology ; Fibroblasts/metabolism ; Fibroblasts/pathology ; Fibrosis/drug therapy ; Fibrosis/metabolism ; Humans ; Kidney/metabolism ; Kidney/pathology ; Liver/metabolism ; Liver/pathology ; Lung/metabolism ; Lung/pathology ; Mice ; Neoplasms/metabolism ; Nephritis, Interstitial/pathology ; Plasma Cells ; Receptor Protein-Tyrosine Kinases ; Skin/metabolism ; Skin/pathology ; Vascular Diseases/metabolism ; Wound Healing
    Chemical Substances Discoidin Domain Receptor 1 (EC 2.7.10.1) ; Receptor Protein-Tyrosine Kinases (EC 2.7.10.1)
    Language English
    Publishing date 2019-04-05
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 60-7
    ISSN 1879-2596 ; 1879-260X ; 1872-8006 ; 1879-2642 ; 1879-2618 ; 1879-2650 ; 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399
    ISSN (online) 1879-2596 ; 1879-260X ; 1872-8006 ; 1879-2642 ; 1879-2618 ; 1879-2650
    ISSN 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399
    DOI 10.1016/j.bbamcr.2019.04.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Signaling pathways predisposing to chronic kidney disease progression.

    Zaidan, Mohamad / Burtin, Martine / Zhang, Jitao David / Blanc, Thomas / Barre, Pauline / Garbay, Serge / Nguyen, Clément / Vasseur, Florence / Yammine, Lucie / Germano, Serena / Badi, Laura / Gubler, Marie-Claire / Gallazzini, Morgan / Friedlander, Gérard / Pontoglio, Marco / Terzi, Fabiola

    JCI insight

    2020  Volume 5, Issue 9

    Abstract: The loss of functional nephrons after kidney injury triggers the compensatory growth of the remaining ones to allow functional adaptation. However, in some cases, these compensatory events activate signaling pathways that lead to pathological alterations ...

    Abstract The loss of functional nephrons after kidney injury triggers the compensatory growth of the remaining ones to allow functional adaptation. However, in some cases, these compensatory events activate signaling pathways that lead to pathological alterations and chronic kidney disease. Little is known about the identity of these pathways and how they lead to the development of renal lesions. Here, we combined mouse strains that differently react to nephron reduction with molecular and temporal genome-wide transcriptome studies to elucidate the molecular mechanisms involved in these events. We demonstrated that nephron reduction led to 2 waves of cell proliferation: the first one occurred during the compensatory growth regardless of the genetic background, whereas the second one occurred, after a quiescent phase, exclusively in the sensitive strain and accompanied the development of renal lesions. Similarly, clustering by coinertia analysis revealed the existence of 2 waves of gene expression. Interestingly, we identified type I interferon (IFN) response as an early (first-wave) and specific signature of the sensitive (FVB/N) mice. Activation of type I IFN response was associated with G1/S cell cycle arrest, which correlated with p21 nuclear translocation. Remarkably, the transient induction of type I IFN response by poly(I:C) injections during the compensatory growth resulted in renal lesions in otherwise-resistant C57BL6 mice. Collectively, these results suggest that the early molecular and cellular events occurring after nephron reduction determine the risk of developing late renal lesions and point to type I IFN response as a crucial event of the deterioration process.
    MeSH term(s) Animals ; Cell Proliferation ; Disease Progression ; Disease Susceptibility ; Female ; G1 Phase Cell Cycle Checkpoints ; Interferon Type I/metabolism ; Kidney/metabolism ; Kidney/pathology ; Mice ; Mice, Inbred C57BL ; Nephrons/metabolism ; Nephrons/pathology ; Renal Insufficiency, Chronic/metabolism ; Renal Insufficiency, Chronic/pathology ; Signal Transduction
    Chemical Substances Interferon Type I
    Language English
    Publishing date 2020-05-07
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2379-3708
    ISSN (online) 2379-3708
    DOI 10.1172/jci.insight.126183
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top