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  • 1
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    Seventy-five genetic loci influencing the human red blood cell (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-12-12
    Description: Anaemia is a chief determinant of global ill health, contributing to cognitive impairment, growth retardation and impaired physical capacity. To understand further the genetic factors influencing red blood cells, we carried out a genome-wide association study of haemoglobin concentration and related parameters in up to 135,367 individuals. Here we identify 75 independent genetic loci associated with one or more red blood cell phenotypes at P 〈 10(-8), which together explain 4-9% of the phenotypic variance per trait. Using expression quantitative trait loci and bioinformatic strategies, we identify 121 candidate genes enriched in functions relevant to red blood cell biology. The candidate genes are expressed preferentially in red blood cell precursors, and 43 have haematopoietic phenotypes in Mus musculus or Drosophila melanogaster. Through open-chromatin and coding-variant analyses we identify potential causal genetic variants at 41 loci. Our findings provide extensive new insights into genetic mechanisms and biological pathways controlling red blood cell formation and function.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3623669/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3623669/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van der Harst, Pim -- Zhang, Weihua -- Mateo Leach, Irene -- Rendon, Augusto -- Verweij, Niek -- Sehmi, Joban -- Paul, Dirk S -- Elling, Ulrich -- Allayee, Hooman -- Li, Xinzhong -- Radhakrishnan, Aparna -- Tan, Sian-Tsung -- Voss, Katrin -- Weichenberger, Christian X -- Albers, Cornelis A -- Al-Hussani, Abtehale -- Asselbergs, Folkert W -- Ciullo, Marina -- Danjou, Fabrice -- Dina, Christian -- Esko, Tonu -- Evans, David M -- Franke, Lude -- Gogele, Martin -- Hartiala, Jaana -- Hersch, Micha -- Holm, Hilma -- Hottenga, Jouke-Jan -- Kanoni, Stavroula -- Kleber, Marcus E -- Lagou, Vasiliki -- Langenberg, Claudia -- Lopez, Lorna M -- Lyytikainen, Leo-Pekka -- Melander, Olle -- Murgia, Federico -- Nolte, Ilja M -- O'Reilly, Paul F -- Padmanabhan, Sandosh -- Parsa, Afshin -- Pirastu, Nicola -- Porcu, Eleonora -- Portas, Laura -- Prokopenko, Inga -- Ried, Janina S -- Shin, So-Youn -- Tang, Clara S -- Teumer, Alexander -- Traglia, Michela -- Ulivi, Sheila -- Westra, Harm-Jan -- Yang, Jian -- Zhao, Jing Hua -- Anni, Franco -- Abdellaoui, Abdel -- Attwood, Antony -- Balkau, Beverley -- Bandinelli, Stefania -- Bastardot, Francois -- Benyamin, Beben -- Boehm, Bernhard O -- Cookson, William O -- Das, Debashish -- de Bakker, Paul I W -- de Boer, Rudolf A -- de Geus, Eco J C -- de Moor, Marleen H -- Dimitriou, Maria -- Domingues, Francisco S -- Doring, Angela -- Engstrom, Gunnar -- Eyjolfsson, Gudmundur Ingi -- Ferrucci, Luigi -- Fischer, Krista -- Galanello, Renzo -- Garner, Stephen F -- Genser, Bernd -- Gibson, Quince D -- Girotto, Giorgia -- Gudbjartsson, Daniel Fannar -- Harris, Sarah E -- Hartikainen, Anna-Liisa -- Hastie, Claire E -- Hedblad, Bo -- Illig, Thomas -- Jolley, Jennifer -- Kahonen, Mika -- Kema, Ido P -- Kemp, John P -- Liang, Liming -- Lloyd-Jones, Heather -- Loos, Ruth J F -- Meacham, Stuart -- Medland, Sarah E -- Meisinger, Christa -- Memari, Yasin -- Mihailov, Evelin -- Miller, Kathy -- Moffatt, Miriam F -- Nauck, Matthias -- Novatchkova, Maria -- Nutile, Teresa -- Olafsson, Isleifur -- Onundarson, Pall T -- Parracciani, Debora -- Penninx, Brenda W -- Perseu, Lucia -- Piga, Antonio -- Pistis, Giorgio -- Pouta, Anneli -- Puc, Ursula -- Raitakari, Olli -- Ring, Susan M -- Robino, Antonietta -- Ruggiero, Daniela -- Ruokonen, Aimo -- Saint-Pierre, Aude -- Sala, Cinzia -- Salumets, Andres -- Sambrook, Jennifer -- Schepers, Hein -- Schmidt, Carsten Oliver -- Sillje, Herman H W -- Sladek, Rob -- Smit, Johannes H -- Starr, John M -- Stephens, Jonathan -- Sulem, Patrick -- Tanaka, Toshiko -- Thorsteinsdottir, Unnur -- Tragante, Vinicius -- van Gilst, Wiek H -- van Pelt, L Joost -- van Veldhuisen, Dirk J -- Volker, Uwe -- Whitfield, John B -- Willemsen, Gonneke -- Winkelmann, Bernhard R -- Wirnsberger, Gerald -- Algra, Ale -- Cucca, Francesco -- d'Adamo, Adamo Pio -- Danesh, John -- Deary, Ian J -- Dominiczak, Anna F -- Elliott, Paul -- Fortina, Paolo -- Froguel, Philippe -- Gasparini, Paolo -- Greinacher, Andreas -- Hazen, Stanley L -- Jarvelin, Marjo-Riitta -- Khaw, Kay Tee -- Lehtimaki, Terho -- Maerz, Winfried -- Martin, Nicholas G -- Metspalu, Andres -- Mitchell, Braxton D -- Montgomery, Grant W -- Moore, Carmel -- Navis, Gerjan -- Pirastu, Mario -- Pramstaller, Peter P -- Ramirez-Solis, Ramiro -- Schadt, Eric -- Scott, James -- Shuldiner, Alan R -- Smith, George Davey -- Smith, J Gustav -- Snieder, Harold -- Sorice, Rossella -- Spector, Tim D -- Stefansson, Kari -- Stumvoll, Michael -- Tang, W H Wilson -- Toniolo, Daniela -- Tonjes, Anke -- Visscher, Peter M -- Vollenweider, Peter -- Wareham, Nicholas J -- Wolffenbuttel, Bruce H R -- Boomsma, Dorret I -- Beckmann, Jacques S -- Dedoussis, George V -- Deloukas, Panos -- Ferreira, Manuel A -- Sanna, Serena -- Uda, Manuela -- Hicks, Andrew A -- Penninger, Josef Martin -- Gieger, Christian -- Kooner, Jaspal S -- Ouwehand, Willem H -- Soranzo, Nicole -- Chambers, John C -- 092731/Wellcome Trust/United Kingdom -- 097117/Wellcome Trust/United Kingdom -- 14136/Cancer Research UK/United Kingdom -- CZB/4/505/Chief Scientist Office/United Kingdom -- ETM/55/Chief Scientist Office/United Kingdom -- G0600705/Medical Research Council/United Kingdom -- G0700704/Medical Research Council/United Kingdom -- G0801056/Medical Research Council/United Kingdom -- G1000143/Medical Research Council/United Kingdom -- G1002084/Medical Research Council/United Kingdom -- G9815508/Medical Research Council/United Kingdom -- HHSN268201100005C/HL/NHLBI NIH HHS/ -- HHSN268201100006C/HL/NHLBI NIH HHS/ -- HHSN268201100007C/HL/NHLBI NIH HHS/ -- HHSN268201100008C/HL/NHLBI NIH HHS/ -- HHSN268201100009C/HL/NHLBI NIH HHS/ -- HHSN268201100010C/HL/NHLBI NIH HHS/ -- HHSN268201100011C/HL/NHLBI NIH HHS/ -- HHSN268201100012C/HL/NHLBI NIH HHS/ -- HHSN271201100005C/DA/NIDA NIH HHS/ -- K12 RR023250/RR/NCRR NIH HHS/ -- MC_U106179471/Medical Research Council/United Kingdom -- MC_U106188470/Medical Research Council/United Kingdom -- N01AG12109/AG/NIA NIH HHS/ -- P01 HL076491/HL/NHLBI NIH HHS/ -- P01 HL098055/HL/NHLBI NIH HHS/ -- P20 HL113452/HL/NHLBI NIH HHS/ -- P30 DK072488/DK/NIDDK NIH HHS/ -- R01 AG018728/AG/NIA NIH HHS/ -- R01 CA165001/CA/NCI NIH HHS/ -- R01 GM053275/GM/NIGMS NIH HHS/ -- R01 HD042157/HD/NICHD NIH HHS/ -- R01 HL059367/HL/NHLBI NIH HHS/ -- R01 HL086694/HL/NHLBI NIH HHS/ -- R01 HL087641/HL/NHLBI NIH HHS/ -- R01 HL087679/HL/NHLBI NIH HHS/ -- R01 HL088119/HL/NHLBI NIH HHS/ -- R01 HL103866/HL/NHLBI NIH HHS/ -- R01 HL103931/HL/NHLBI NIH HHS/ -- R01 LM010098/LM/NLM NIH HHS/ -- R01 MH081802/MH/NIMH NIH HHS/ -- RG/09/012/28096/British Heart Foundation/United Kingdom -- RL1 MH083268/MH/NIMH NIH HHS/ -- U01 GM074518/GM/NIGMS NIH HHS/ -- U01 HG004402/HG/NHGRI NIH HHS/ -- U01 HL072515/HL/NHLBI NIH HHS/ -- U01 HL084756/HL/NHLBI NIH HHS/ -- U24 MH068457/MH/NIMH NIH HHS/ -- U54 RR020278/RR/NCRR NIH HHS/ -- UL1 RR025005/RR/NCRR NIH HHS/ -- UL1 TR000439/TR/NCATS NIH HHS/ -- England -- Nature. 2012 Dec 20;492(7429):369-75. doi: 10.1038/nature11677. Epub 2012 Dec 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cardiology, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands. p.van.der.harst@umcg.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23222517" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle/genetics ; Cytokines/metabolism ; Drosophila melanogaster/genetics ; Erythrocytes/cytology/*metabolism ; Female ; Gene Expression Regulation/genetics ; *Genetic Loci ; *Genome-Wide Association Study ; Hematopoiesis/genetics ; Hemoglobins/genetics ; Humans ; Male ; Mice ; Organ Specificity ; *Phenotype ; Polymorphism, Single Nucleotide/genetics ; RNA Interference ; Signal Transduction/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Identification of critical staphylococcal genes using conditional phenotypes generated by antisense RNA (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-22
    Description: Comprehensive genomic analysis of the important human pathogen Staphylococcus aureus was achieved by a strategy involving antisense technology in a regulatable gene expression system. In addition to known essential genes, many genes of unknown or poorly defined biological function were identified. This methodology allowed gene function to be characterized in a comprehensive, defined set of conditionally growth-defective/lethal isogenic strains. Quantitative titration of the conditional growth effect was performed either in bacterial culture or in an animal model of infection. This genomic strategy offers an approach to the identification of staphylococcal gene products that could serve as targets for antibiotic discovery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ji, Y -- Zhang, B -- Van, S F -- Horn -- Warren, P -- Woodnutt, G -- Burnham, M K -- Rosenberg, M -- New York, N.Y. -- Science. 2001 Sep 21;293(5538):2266-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Genetics Research, GlaxoSmithKline Pharmaceuticals Research and Development, Collegeville, PA 19426, USA. yinduo_ji-1@gsk.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11567142" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cloning, Molecular ; Female ; *Gene Expression Regulation, Bacterial ; *Genes, Bacterial ; *Genes, Essential ; Genetic Vectors ; Mice ; Open Reading Frames ; Phenotype ; Pyelonephritis/microbiology ; *RNA, Antisense ; Staphylococcal Infections/microbiology ; Staphylococcus aureus/*genetics/growth & development/pathogenicity ; Transformation, Bacterial ; Virulence/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    IEX-1L, an apoptosis inhibitor involved in NF-kappaB-mediated cell survival (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-08-14
    Description: Transcription factors of the nuclear factor-kappaB/rel (NF-kappaB) family may be important in cell survival by regulating unidentified, anti-apoptotic genes. One such gene that protects cells from apoptosis induced by Fas or tumor necrosis factor type alpha (TNF), IEX-1L, is described here. Its transcription induced by TNF was decreased in cells with defective NF-kappaB activation, rendering them sensitive to TNF-induced apoptosis, which was abolished by transfection with IEX-1L. In support, overexpression of antisense IEX-1L partially blocked TNF-induced expression of IEX-1L and sensitized normal cells to killing. This study demonstrates a key role of IEX-1L in cellular resistance to TNF-induced apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, M X -- Ao, Z -- Prasad, K V -- Wu, R -- Schlossman, S F -- AI12069/AI/NIAID NIH HHS/ -- P30AI28691/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1998 Aug 14;281(5379):998-1001.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Tumor Immunology, Dana-Farber Cancer Institute, and the Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9703517" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD95/physiology ; Apoptosis/genetics/*physiology ; Apoptosis Regulatory Proteins ; Cell Line ; Cell Survival ; Cloning, Molecular ; DNA, Antisense/genetics ; Gene Expression Regulation ; Genetic Vectors ; Humans ; Immediate-Early Proteins/genetics/*physiology ; Jurkat Cells ; Membrane Glycoproteins/genetics/*physiology ; Membrane Proteins ; Mice ; NF-kappa B/*physiology ; *Neoplasm Proteins ; Transfection ; Tumor Necrosis Factor-alpha/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    In vivo protein transduction: delivery of a biologically active protein into the mouse (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-08
    Description: Delivery of therapeutic proteins into tissues and across the blood-brain barrier is severely limited by the size and biochemical properties of the proteins. Here it is shown that intraperitoneal injection of the 120-kilodalton beta-galactosidase protein, fused to the protein transduction domain from the human immunodeficiency virus TAT protein, results in delivery of the biologically active fusion protein to all tissues in mice, including the brain. These results open new possibilities for direct delivery of proteins into patients in the context of protein therapy, as well as for epigenetic experimentation with model organisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwarze, S R -- Ho, A -- Vocero-Akbani, A -- Dowdy, S F -- New York, N.Y. -- Science. 1999 Sep 3;285(5433):1569-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Pathology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10477521" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood-Brain Barrier ; Brain/metabolism ; Cell Membrane/metabolism ; Drug Carriers ; *Drug Delivery Systems ; Fluorescein-5-isothiocyanate ; Gene Products, tat/administration & dosage/*metabolism ; Humans ; Injections, Intraperitoneal ; Jurkat Cells ; Lipid Bilayers ; Mice ; Mice, Inbred C57BL ; Microscopy, Confocal ; Microscopy, Fluorescence ; Muscle, Skeletal/metabolism ; Recombinant Fusion Proteins/administration & dosage/*metabolism ; Spleen/metabolism ; Tissue Distribution ; Tumor Cells, Cultured ; beta-Galactosidase/administration & dosage/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Shotgun bisulphite sequencing of the Arabidopsis genome reveals DNA methylation patterning (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-02-19
    Description: Cytosine DNA methylation is important in regulating gene expression and in silencing transposons and other repetitive sequences. Recent genomic studies in Arabidopsis thaliana have revealed that many endogenous genes are methylated either within their promoters or within their transcribed regions, and that gene methylation is highly correlated with transcription levels. However, plants have different types of methylation controlled by different genetic pathways, and detailed information on the methylation status of each cytosine in any given genome is lacking. To this end, we generated a map at single-base-pair resolution of methylated cytosines for Arabidopsis, by combining bisulphite treatment of genomic DNA with ultra-high-throughput sequencing using the Illumina 1G Genome Analyser and Solexa sequencing technology. This approach, termed BS-Seq, unlike previous microarray-based methods, allows one to sensitively measure cytosine methylation on a genome-wide scale within specific sequence contexts. Here we describe methylation on previously inaccessible components of the genome and analyse the DNA methylation sequence composition and distribution. We also describe the effect of various DNA methylation mutants on genome-wide methylation patterns, and demonstrate that our newly developed library construction and computational methods can be applied to large genomes such as that of mouse.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2377394/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2377394/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cokus, Shawn J -- Feng, Suhua -- Zhang, Xiaoyu -- Chen, Zugen -- Merriman, Barry -- Haudenschild, Christian D -- Pradhan, Sriharsa -- Nelson, Stanley F -- Pellegrini, Matteo -- Jacobsen, Steven E -- Howard Hughes Medical Institute/ -- England -- Nature. 2008 Mar 13;452(7184):215-9. doi: 10.1038/nature06745. Epub 2008 Feb 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cell, and Developmental Biology, University of California at Los Angeles, Los Angeles, California 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18278030" target="_blank"〉PubMed〈/a〉
    Keywords: 5-Methylcytosine/metabolism ; Animals ; Arabidopsis/*genetics ; Base Sequence ; Computational Biology ; Cytosine/metabolism ; *DNA Methylation ; Gene Expression Regulation, Plant/genetics ; Gene Library ; Genome, Plant/*genetics ; Mice ; Mutation/genetics ; Promoter Regions, Genetic/genetics ; Reproducibility of Results ; Sequence Analysis, DNA/*methods ; Sulfites/*metabolism ; Uracil/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
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    TGF-beta-induced Foxp3 inhibits T(H)17 cell differentiation by antagonizing RORgammat function (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-03-28
    Description: T helper cells that produce IL-17 (T(H)17 cells) promote autoimmunity in mice and have been implicated in the pathogenesis of human inflammatory diseases. At mucosal surfaces, T(H)17 cells are thought to protect the host from infection, whereas regulatory T (T(reg)) cells control immune responses and inflammation triggered by the resident microflora. Differentiation of both cell types requires transforming growth factor-beta (TGF-beta), but depends on distinct transcription factors: RORgammat (encoded by Rorc(gammat)) for T(H)17 cells and Foxp3 for T(reg) cells. How TGF-beta regulates the differentiation of T cells with opposing activities has been perplexing. Here we demonstrate that, together with pro-inflammatory cytokines, TGF-beta orchestrates T(H)17 cell differentiation in a concentration-dependent manner. At low concentrations, TGF-beta synergizes with interleukin (IL)-6 and IL-21 (refs 9-11) to promote IL-23 receptor (Il23r) expression, favouring T(H)17 cell differentiation. High concentrations of TGF-beta repress IL23r expression and favour Foxp3+ T(reg) cells. RORgammat and Foxp3 are co-expressed in naive CD4+ T cells exposed to TGF-beta and in a subset of T cells in the small intestinal lamina propria of the mouse. In vitro, TGF-beta-induced Foxp3 inhibits RORgammat function, at least in part through their interaction. Accordingly, lamina propria T cells that co-express both transcription factors produce less IL-17 (also known as IL-17a) than those that express RORgammat alone. IL-6, IL-21 and IL-23 relieve Foxp3-mediated inhibition of RORgammat, thereby promoting T(H)17 cell differentiation. Therefore, the decision of antigen-stimulated cells to differentiate into either T(H)17 or T(reg) cells depends on the cytokine-regulated balance of RORgammat and Foxp3.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2597437/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2597437/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Liang -- Lopes, Jared E -- Chong, Mark M W -- Ivanov, Ivaylo I -- Min, Roy -- Victora, Gabriel D -- Shen, Yuelei -- Du, Jianguang -- Rubtsov, Yuri P -- Rudensky, Alexander Y -- Ziegler, Steven F -- Littman, Dan R -- AI48779/AI/NIAID NIH HHS/ -- R01 AI048779/AI/NIAID NIH HHS/ -- R01 AI048779-05/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2008 May 8;453(7192):236-40. doi: 10.1038/nature06878. Epub 2008 Mar 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Kimmel Center for Biology and Medicine of the Skirball Institute, New York University School of Medicine, New York, New York 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18368049" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/drug effects ; Cell Line ; Cells, Cultured ; Forkhead Transcription Factors/genetics/*metabolism ; Gene Expression Regulation/drug effects ; Humans ; Interleukin-17/biosynthesis/genetics/*metabolism ; Mice ; Mice, Inbred C57BL ; Nuclear Receptor Subfamily 1, Group F, Member 3 ; Receptors, Interleukin/genetics/metabolism ; Receptors, Retinoic Acid/*antagonists & inhibitors/genetics/metabolism ; Receptors, Thyroid Hormone/*antagonists & inhibitors/genetics/metabolism ; T-Lymphocytes, Helper-Inducer/*cytology/*drug effects/metabolism ; Transforming Growth Factor beta/*pharmacology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 7
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    Reptilian heart development and the molecular basis of cardiac chamber evolution (2009)
    Nature Publishing Group (NPG)
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    Publication Date: 2009-09-04
    Description: The emergence of terrestrial life witnessed the need for more sophisticated circulatory systems. This has evolved in birds, mammals and crocodilians into complete septation of the heart into left and right sides, allowing separate pulmonary and systemic circulatory systems, a key requirement for the evolution of endothermy. However, the evolution of the amniote heart is poorly understood. Reptilian hearts have been the subject of debate in the context of the evolution of cardiac septation: do they possess a single ventricular chamber or two incompletely septated ventricles? Here we examine heart development in the red-eared slider turtle, Trachemys scripta elegans (a chelonian), and the green anole, Anolis carolinensis (a squamate), focusing on gene expression in the developing ventricles. Both reptiles initially form a ventricular chamber that homogenously expresses the T-box transcription factor gene Tbx5. In contrast, in birds and mammals, Tbx5 is restricted to left ventricle precursors. In later stages, Tbx5 expression in the turtle (but not anole) heart is gradually restricted to a distinct left ventricle, forming a left-right gradient. This suggests that Tbx5 expression was refined during evolution to pattern the ventricles. In support of this hypothesis, we show that loss of Tbx5 in the mouse ventricle results in a single chamber lacking distinct identity, indicating a requirement for Tbx5 in septation. Importantly, misexpression of Tbx5 throughout the developing myocardium to mimic the reptilian expression pattern also results in a single mispatterned ventricular chamber lacking septation. Thus ventricular septation is established by a steep and correctly positioned Tbx5 gradient. Our findings provide a molecular mechanism for the evolution of the amniote ventricle, and support the concept that altered expression of developmental regulators is a key mechanism of vertebrate evolution.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2753965/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2753965/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koshiba-Takeuchi, Kazuko -- Mori, Alessandro D -- Kaynak, Bogac L -- Cebra-Thomas, Judith -- Sukonnik, Tatyana -- Georges, Romain O -- Latham, Stephany -- Beck, Laurel -- Henkelman, R Mark -- Black, Brian L -- Olson, Eric N -- Wade, Juli -- Takeuchi, Jun K -- Nemer, Mona -- Gilbert, Scott F -- Bruneau, Benoit G -- C06 RR018928/RR/NCRR NIH HHS/ -- P01 HL089707/HL/NHLBI NIH HHS/ -- P01 HL089707-01A1/HL/NHLBI NIH HHS/ -- P01HL089707/HL/NHLBI NIH HHS/ -- R01 HL064658/HL/NHLBI NIH HHS/ -- England -- Nature. 2009 Sep 3;461(7260):95-8. doi: 10.1038/nature08324.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gladstone Institute of Cardiovascular Disease, San Francisco, California 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19727199" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chick Embryo ; *Evolution, Molecular ; Gene Expression Regulation, Developmental ; Heart/anatomy & histology/*embryology ; Lizards/anatomy & histology/*embryology/genetics ; Mice ; Organogenesis ; T-Box Domain Proteins/deficiency/genetics/metabolism ; Turtles/anatomy & histology/*embryology/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    The pluripotency factor Oct4 interacts with Ctcf and also controls X-chromosome pairing and counting (2009)
    Nature Publishing Group (NPG)
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    Publication Date: 2009-06-19
    Description: Pluripotency of embryonic stem (ES) cells is controlled by defined transcription factors. During differentiation, mouse ES cells undergo global epigenetic reprogramming, as exemplified by X-chromosome inactivation (XCI) in which one female X chromosome is silenced to achieve gene dosage parity between the sexes. Somatic XCI is regulated by homologous X-chromosome pairing and counting, and by the random choice of future active and inactive X chromosomes. XCI and cell differentiation are tightly coupled, as blocking one process compromises the other and dedifferentiation of somatic cells to induced pluripotent stem cells is accompanied by X chromosome reactivation. Recent evidence suggests coupling of Xist expression to pluripotency factors occurs, but how the two are interconnected remains unknown. Here we show that Oct4 (also known as Pou5f1) lies at the top of the XCI hierarchy, and regulates XCI by triggering X-chromosome pairing and counting. Oct4 directly binds Tsix and Xite, two regulatory noncoding RNA genes of the X-inactivation centre, and also complexes with XCI trans-factors, Ctcf and Yy1 (ref. 17), through protein-protein interactions. Depletion of Oct4 blocks homologous X-chromosome pairing and results in the inactivation of both X chromosomes in female cells. Thus, we have identified the first trans-factor that regulates counting, and ascribed new functions to Oct4 during X-chromosome reprogramming.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3057664/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3057664/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Donohoe, Mary E -- Silva, Susana S -- Pinter, Stefan F -- Xu, Na -- Lee, Jeannie T -- GM58839/GM/NIGMS NIH HHS/ -- R01 GM058839/GM/NIGMS NIH HHS/ -- R01 GM058839-10/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2009 Jul 2;460(7251):128-32. doi: 10.1038/nature08098. Epub 2009 Jun 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19536159" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; *Chromosome Pairing ; Female ; Humans ; Male ; Mice ; Octamer Transcription Factor-3/deficiency/genetics/*metabolism ; Protein Binding ; RNA, Long Noncoding ; RNA, Untranslated/genetics ; Repressor Proteins/*metabolism ; SOXB1 Transcription Factors ; Transcriptional Activation ; X Chromosome/*genetics/*metabolism ; X Chromosome Inactivation/*genetics ; YY1 Transcription Factor/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    Nucleotides released by apoptotic cells act as a find-me signal to promote phagocytic clearance (2009)
    Nature Publishing Group (NPG)
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    Publication Date: 2009-09-11
    Description: Phagocytic removal of apoptotic cells occurs efficiently in vivo such that even in tissues with significant apoptosis, very few apoptotic cells are detectable. This is thought to be due to the release of 'find-me' signals by apoptotic cells that recruit motile phagocytes such as monocytes, macrophages and dendritic cells, leading to the prompt clearance of the dying cells. However, the identity and in vivo relevance of such find-me signals are not well understood. Here, through several lines of evidence, we identify extracellular nucleotides as a critical apoptotic cell find-me signal. We demonstrate the caspase-dependent release of ATP and UTP (in equimolar quantities) during the early stages of apoptosis by primary thymocytes and cell lines. Purified nucleotides at these concentrations were sufficient to induce monocyte recruitment comparable to that of apoptotic cell supernatants. Enzymatic removal of ATP and UTP (by apyrase or the expression of ectopic CD39) abrogated the ability of apoptotic cell supernatants to recruit monocytes in vitro and in vivo. We then identified the ATP/UTP receptor P2Y(2) as a critical sensor of nucleotides released by apoptotic cells using RNA interference-mediated depletion studies in monocytes, and macrophages from P2Y(2)-null mice. The relevance of nucleotides in apoptotic cell clearance in vivo was revealed by two approaches. First, in a murine air-pouch model, apoptotic cell supernatants induced a threefold greater recruitment of monocytes and macrophages than supernatants from healthy cells did; this recruitment was abolished by depletion of nucleotides and was significantly decreased in P2Y(2)(-/-) (also known as P2ry2(-/-)) mice. Second, clearance of apoptotic thymocytes was significantly impaired by either depletion of nucleotides or interference with P2Y receptor function (by pharmacological inhibition or in P2Y(2)(-/-) mice). These results identify nucleotides as a critical find-me cue released by apoptotic cells to promote P2Y(2)-dependent recruitment of phagocytes, and provide evidence for a clear relationship between a find-me signal and efficient corpse clearance in vivo.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2851546/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2851546/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Elliott, Michael R -- Chekeni, Faraaz B -- Trampont, Paul C -- Lazarowski, Eduardo R -- Kadl, Alexandra -- Walk, Scott F -- Park, Daeho -- Woodson, Robin I -- Ostankovich, Marina -- Sharma, Poonam -- Lysiak, Jeffrey J -- Harden, T Kendall -- Leitinger, Norbert -- Ravichandran, Kodi S -- R01 GM064709/GM/NIGMS NIH HHS/ -- R01 GM064709-07/GM/NIGMS NIH HHS/ -- R01 GM069998/GM/NIGMS NIH HHS/ -- R01 GM069998-04/GM/NIGMS NIH HHS/ -- England -- Nature. 2009 Sep 10;461(7261):282-6. doi: 10.1038/nature08296.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, Virginia 22908, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19741708" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/*metabolism/pharmacology/secretion ; Animals ; Apoptosis/*physiology ; Cell Line ; Cells, Cultured ; Chemotactic Factors/metabolism/pharmacology/secretion ; Chemotaxis/drug effects ; Culture Media, Conditioned/chemistry/metabolism/pharmacology ; Humans ; Jurkat Cells ; Macrophage Activation/drug effects ; Macrophages/cytology/drug effects/metabolism ; Mice ; Mice, Inbred C57BL ; Monocytes/cytology/drug effects/metabolism ; Phagocytes/*cytology/drug effects/metabolism ; Phagocytosis/drug effects/*physiology ; Purinergic P2 Receptor Antagonists ; Receptors, Purinergic P2/deficiency/genetics/metabolism ; Receptors, Purinergic P2Y2 ; *Signal Transduction/drug effects ; Thymus Gland/*cytology ; Uridine Triphosphate/*metabolism/pharmacology/secretion
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    A human 5'-tyrosyl DNA phosphodiesterase that repairs topoisomerase-mediated DNA damage (2009)
    Nature Publishing Group (NPG)
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    Publication Date: 2009-10-02
    Description: Topoisomerases regulate DNA topology and are fundamental to many aspects of chromosome metabolism. Their activity involves the transient cleavage of DNA, which, if it occurs near sites of endogenous DNA damage or in the presence of topoisomerase poisons, can result in abortive topoisomerase-induced DNA strand breaks. These breaks feature covalent linkage of the enzyme to the DNA termini by a 3'- or 5'-phosphotyrosyl bond and are implicated in hereditary human disease, chromosomal instability and cancer, and underlie the clinical efficacy of an important class of anti-tumour poisons. The importance of liberating DNA termini from trapped topoisomerase is illustrated by the progressive neurodegenerative disease observed in individuals containing a mutation in tyrosyl-DNA phosphodiesterase 1 (TDP1), an enzyme that cleaves 3'-phosphotyrosyl bonds. However, a complementary human enzyme that cleaves 5'-phosphotyrosyl bonds has not been reported, despite the effect of DNA double-strand breaks containing such termini on chromosome instability and cancer. Here we identify such an enzyme in human cells and show that this activity efficiently restores 5'-phosphate termini at DNA double-strand breaks in preparation for DNA ligation. This enzyme, TTRAP, is a member of the Mg(2+)/Mn(2+)-dependent family of phosphodiesterases. Cellular depletion of TTRAP results in increased susceptibility and sensitivity to topoisomerase-II-induced DNA double-strand breaks. TTRAP is, to our knowledge, the first human 5'-tyrosyl DNA phosphodiesterase to be identified, and we suggest that this enzyme is denoted tyrosyl DNA phosphodiesterase-2 (TDP2).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cortes Ledesma, Felipe -- El Khamisy, Sherif F -- Zuma, Maria C -- Osborn, Kay -- Caldecott, Keith W -- 085284/Wellcome Trust/United Kingdom -- BB/C516595/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- C6563/A10192/Cancer Research UK/United Kingdom -- G0600776/Medical Research Council/United Kingdom -- G0901606/Medical Research Council/United Kingdom -- England -- Nature. 2009 Oct 1;461(7264):674-8. doi: 10.1038/nature08444.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genome Damage and Stability Centre, University of Sussex, Science Park Road, Falmer, Brighton, Sussex BN1 9RQ, UK. fc55@sussex.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19794497" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Camptothecin/pharmacology ; Cell Extracts/chemistry ; Cell Line, Tumor ; DNA Breaks, Double-Stranded ; DNA Breaks, Single-Stranded ; *DNA Damage/drug effects ; *DNA Repair ; DNA Topoisomerases/*metabolism ; DNA Topoisomerases, Type I/metabolism ; DNA Topoisomerases, Type II/metabolism ; Etoposide/pharmacology ; Female ; Gene Library ; Genetic Complementation Test ; Humans ; Male ; Mice ; Nuclear Proteins/deficiency/genetics/isolation & purification/*metabolism ; Phosphoric Diester Hydrolases/genetics/metabolism ; Saccharomyces cerevisiae/drug effects/enzymology/genetics/metabolism ; Suppression, Genetic ; Transcription Factors/deficiency/genetics/isolation & purification/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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