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  • 2010-2014  (406)
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  • 1
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    Hedgehog-responsive candidate cell of origin for diffuse intrinsic pontine glioma [Neuroscience] (2011)
    National Academy of Sciences
    Details
    Publication Date: 2011-03-16
    Description: Diffuse intrinsic pontine gliomas (DIPGs) are highly aggressive tumors of childhood that are almost universally fatal. Our understanding of this devastating cancer is limited by a dearth of available tissue for study and by the lack of a faithful animal model. Intriguingly, DIPGs are restricted to the ventral pons and occur during a narrow window of middle childhood, suggesting dysregulation of a postnatal neurodevelopmental process. Here, we report the identification of a previously undescribed population of immunophenotypic neural precursor cells in the human and murine brainstem whose temporal and spatial distributions correlate closely with the incidence of DIPG and highlight a candidate cell of origin. Using early postmortem DIPG tumor tissue, we have established in vitro and xenograft models and find that the Hedgehog (Hh) signaling pathway implicated in many developmental and oncogenic processes is active in DIPG tumor cells. Modulation of Hh pathway activity has functional consequences for DIPG self-renewal capacity in neurosphere culture. The Hh pathway also appears to be active in normal ventral pontine precursor-like cells of the mouse, and unregulated pathway activity results in hypertrophy of the ventral pons. Together, these findings provide a foundation for understanding the cellular and molecular origins of DIPG, and suggest that the Hh pathway represents a potential therapeutic target in this devastating pediatric tumor.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 2
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    Invasive harlequin ladybird carries biological weapons against native competitors (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-05-21
    Description: Invasive species that proliferate after colonizing new habitats have a negative environmental and economic impact. The reason why some species become successful invaders, whereas others, even closely related species, remain noninvasive is often unclear. The harlequin ladybird Harmonia axyridis, introduced for biological pest control, has become an invader that is outcompeting indigenous ladybird species in many countries. Here, we show that Harmonia carries abundant spores of obligate parasitic microsporidia closely related to Nosema thompsoni. These microsporidia, while not harming the carrier Harmonia, are lethal pathogens for the native ladybird Coccinella septempunctata. We propose that intraguild predation, representing a major selective force among competing ladybird species, causes the infection and ultimate death of native ladybirds when they feed on microsporidia-contaminated Harmonia eggs or larvae.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vilcinskas, Andreas -- Stoecker, Kilian -- Schmidtberg, Henrike -- Rohrich, Christian R -- Vogel, Heiko -- New York, N.Y. -- Science. 2013 May 17;340(6134):862-3. doi: 10.1126/science.1234032.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Phytopathology and Applied Zoology, Heinrich-Buff-Ring 26-32, Justus-Liebig-University of Giessen, D-35392 Giessen, Germany. andreas.vilcinskas@agrar.uni-giessen.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23687046" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Beetles/*parasitology/*physiology ; *Food Chain ; Hemocytes/parasitology ; Hemolymph/parasitology ; *Introduced Species ; Nosema/*physiology/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Neuronal activity promotes oligodendrogenesis and adaptive myelination in the mammalian brain (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-04-15
    Description: Myelination of the central nervous system requires the generation of functionally mature oligodendrocytes from oligodendrocyte precursor cells (OPCs). Electrically active neurons may influence OPC function and selectively instruct myelination of an active neural circuit. In this work, we use optogenetic stimulation of the premotor cortex in awake, behaving mice to demonstrate that neuronal activity elicits a mitogenic response of neural progenitor cells and OPCs, promotes oligodendrogenesis, and increases myelination within the deep layers of the premotor cortex and subcortical white matter. We further show that this neuronal activity-regulated oligodendrogenesis and myelination is associated with improved motor function of the corresponding limb. Oligodendrogenesis and myelination appear necessary for the observed functional improvement, as epigenetic blockade of oligodendrocyte differentiation and myelin changes prevents the activity-regulated behavioral improvement.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4096908/" 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/PMC4096908/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibson, Erin M -- Purger, David -- Mount, Christopher W -- Goldstein, Andrea K -- Lin, Grant L -- Wood, Lauren S -- Inema, Ingrid -- Miller, Sarah E -- Bieri, Gregor -- Zuchero, J Bradley -- Barres, Ben A -- Woo, Pamelyn J -- Vogel, Hannes -- Monje, Michelle -- 1S10RR02678001/RR/NCRR NIH HHS/ -- K08 NS070926/NS/NINDS NIH HHS/ -- K08NS070926/NS/NINDS NIH HHS/ -- R01 EY10257/EY/NEI NIH HHS/ -- T32 MH020016/MH/NIMH NIH HHS/ -- UL1 RR025744/RR/NCRR NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2014 May 2;344(6183):1252304. doi: 10.1126/science.1252304. Epub 2014 Apr 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Neurology, Neurosurgery, and Pediatrics, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24727982" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Thy-1/genetics ; Behavior, Animal/physiology ; *Cell Differentiation ; Cell Lineage ; Cell Proliferation ; Corpus Callosum/cytology/physiology ; Mice ; Mice, Mutant Strains ; Motor Activity/physiology ; Motor Cortex/cytology/*physiology ; Myelin Sheath/*metabolism ; Nerve Fibers, Myelinated/*metabolism ; Neural Stem Cells/*physiology ; Neurons/*physiology ; Oligodendroglia/*cytology ; Rhodopsin/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    The genome sequence of Atlantic cod reveals a unique immune system (2011)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2011-08-13
    Description: Atlantic cod (Gadus morhua) is a large, cold-adapted teleost that sustains long-standing commercial fisheries and incipient aquaculture. Here we present the genome sequence of Atlantic cod, showing evidence for complex thermal adaptations in its haemoglobin gene cluster and an unusual immune architecture compared to other sequenced vertebrates. The genome assembly was obtained exclusively by 454 sequencing of shotgun and paired-end libraries, and automated annotation identified 22,154 genes. The major histocompatibility complex (MHC) II is a conserved feature of the adaptive immune system of jawed vertebrates, but we show that Atlantic cod has lost the genes for MHC II, CD4 and invariant chain (Ii) that are essential for the function of this pathway. Nevertheless, Atlantic cod is not exceptionally susceptible to disease under natural conditions. We find a highly expanded number of MHC I genes and a unique composition of its Toll-like receptor (TLR) families. This indicates how the Atlantic cod immune system has evolved compensatory mechanisms in both adaptive and innate immunity in the absence of MHC II. These observations affect fundamental assumptions about the evolution of the adaptive immune system and its components in vertebrates.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3537168/" 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/PMC3537168/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Star, Bastiaan -- Nederbragt, Alexander J -- Jentoft, Sissel -- Grimholt, Unni -- Malmstrom, Martin -- Gregers, Tone F -- Rounge, Trine B -- Paulsen, Jonas -- Solbakken, Monica H -- Sharma, Animesh -- Wetten, Ola F -- Lanzen, Anders -- Winer, Roger -- Knight, James -- Vogel, Jan-Hinnerk -- Aken, Bronwen -- Andersen, Oivind -- Lagesen, Karin -- Tooming-Klunderud, Ave -- Edvardsen, Rolf B -- Tina, Kirubakaran G -- Espelund, Mari -- Nepal, Chirag -- Previti, Christopher -- Karlsen, Bard Ove -- Moum, Truls -- Skage, Morten -- Berg, Paul R -- Gjoen, Tor -- Kuhl, Heiner -- Thorsen, Jim -- Malde, Ketil -- Reinhardt, Richard -- Du, Lei -- Johansen, Steinar D -- Searle, Steve -- Lien, Sigbjorn -- Nilsen, Frank -- Jonassen, Inge -- Omholt, Stig W -- Stenseth, Nils Chr -- Jakobsen, Kjetill S -- 098051/Wellcome Trust/United Kingdom -- England -- Nature. 2011 Aug 10;477(7363):207-10. doi: 10.1038/nature10342.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Ecological and Evolutionary Synthesis, Department of Biology, University of Oslo, PO Box 1066, Blindern, N-0316 Oslo, Norway.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21832995" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Evolution, Molecular ; Gadus morhua/*genetics/*immunology ; Genome/*genetics ; Genomics ; Hemoglobins/genetics ; Immune System/*immunology ; Immunity/*genetics/immunology ; Major Histocompatibility Complex/genetics/immunology ; Male ; Polymorphism, Genetic/genetics ; Synteny/genetics ; Toll-Like Receptors/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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  • 5
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    X-ray structure of the mouse serotonin 5-HT3 receptor (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-08-15
    Description: Neurotransmitter-gated ion channels of the Cys-loop receptor family mediate fast neurotransmission throughout the nervous system. The molecular processes of neurotransmitter binding, subsequent opening of the ion channel and ion permeation remain poorly understood. Here we present the X-ray structure of a mammalian Cys-loop receptor, the mouse serotonin 5-HT3 receptor, at 3.5 A resolution. The structure of the proteolysed receptor, made up of two fragments and comprising part of the intracellular domain, was determined in complex with stabilizing nanobodies. The extracellular domain reveals the detailed anatomy of the neurotransmitter binding site capped by a nanobody. The membrane domain delimits an aqueous pore with a 4.6 A constriction. In the intracellular domain, a bundle of five intracellular helices creates a closed vestibule where lateral portals are obstructed by loops. This 5-HT3 receptor structure, revealing part of the intracellular domain, expands the structural basis for understanding the operating mechanism of mammalian Cys-loop receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hassaine, Gherici -- Deluz, Cedric -- Grasso, Luigino -- Wyss, Romain -- Tol, Menno B -- Hovius, Ruud -- Graff, Alexandra -- Stahlberg, Henning -- Tomizaki, Takashi -- Desmyter, Aline -- Moreau, Christophe -- Li, Xiao-Dan -- Poitevin, Frederic -- Vogel, Horst -- Nury, Hugues -- England -- Nature. 2014 Aug 21;512(7514):276-81. doi: 10.1038/nature13552. Epub 2014 Aug 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Laboratory of Physical Chemistry of Polymers and Membranes, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland [2] [3] Theranyx, 163 Avenue de Luminy, 13288 Marseille, France. ; 1] Laboratory of Physical Chemistry of Polymers and Membranes, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland [2]. ; Laboratory of Physical Chemistry of Polymers and Membranes, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland. ; Center for Cellular Imaging and NanoAnalytics, Biozentrum, University of Basel, CH-4058 Basel, Switzerland. ; Swiss Light Source, Paul Scherrer Institute, CH-5234 Villigen, Switzerland. ; Architecture et Fonction des Macromolecules Biologiques, CNRS UMR 7257 and Universite Aix-Marseille, F-13288 Marseille, France. ; 1] Universite Grenoble Alpes, IBS, F-38000 Grenoble, France [2] CNRS, IBS, F-38000 Grenoble, France [3] CEA, DSV, IBS, F-38000 Grenoble, France. ; Laboratory of Biomolecular Research, Paul Scherrer Institute, CH-5232 Villigen, Switzerland. ; Unite de Dynamique Structurale des Macromolecules, Institut Pasteur, CNRS UMR3528, F-75015 Paris, France. ; 1] Laboratory of Physical Chemistry of Polymers and Membranes, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland [2] Universite Grenoble Alpes, IBS, F-38000 Grenoble, France [3] CNRS, IBS, F-38000 Grenoble, France [4] CEA, DSV, IBS, F-38000 Grenoble, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25119048" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Crystallography, X-Ray ; Mice ; Models, Molecular ; Molecular Sequence Data ; Neurotransmitter Agents/metabolism ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; Protein Subunits/chemistry/metabolism ; Receptors, Serotonin, 5-HT3/*chemistry/metabolism
    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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  • 6
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    The zebrafish reference genome sequence and its relationship to the human genome (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-04-19
    Description: Zebrafish have become a popular organism for the study of vertebrate gene function. The virtually transparent embryos of this species, and the ability to accelerate genetic studies by gene knockdown or overexpression, have led to the widespread use of zebrafish in the detailed investigation of vertebrate gene function and increasingly, the study of human genetic disease. However, for effective modelling of human genetic disease it is important to understand the extent to which zebrafish genes and gene structures are related to orthologous human genes. To examine this, we generated a high-quality sequence assembly of the zebrafish genome, made up of an overlapping set of completely sequenced large-insert clones that were ordered and oriented using a high-resolution high-density meiotic map. Detailed automatic and manual annotation provides evidence of more than 26,000 protein-coding genes, the largest gene set of any vertebrate so far sequenced. Comparison to the human reference genome shows that approximately 70% of human genes have at least one obvious zebrafish orthologue. In addition, the high quality of this genome assembly provides a clearer understanding of key genomic features such as a unique repeat content, a scarcity of pseudogenes, an enrichment of zebrafish-specific genes on chromosome 4 and chromosomal regions that influence sex determination.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3703927/" 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/PMC3703927/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Howe, Kerstin -- Clark, Matthew D -- Torroja, Carlos F -- Torrance, James -- Berthelot, Camille -- Muffato, Matthieu -- Collins, John E -- Humphray, Sean -- McLaren, Karen -- Matthews, Lucy -- McLaren, Stuart -- Sealy, Ian -- Caccamo, Mario -- Churcher, Carol -- Scott, Carol -- Barrett, Jeffrey C -- Koch, Romke -- Rauch, Gerd-Jorg -- White, Simon -- Chow, William -- Kilian, Britt -- Quintais, Leonor T -- Guerra-Assuncao, Jose A -- Zhou, Yi -- Gu, Yong -- Yen, Jennifer -- Vogel, Jan-Hinnerk -- Eyre, Tina -- Redmond, Seth -- Banerjee, Ruby -- Chi, Jianxiang -- Fu, Beiyuan -- Langley, Elizabeth -- Maguire, Sean F -- Laird, Gavin K -- Lloyd, David -- Kenyon, Emma -- Donaldson, Sarah -- Sehra, Harminder -- Almeida-King, Jeff -- Loveland, Jane -- Trevanion, Stephen -- Jones, Matt -- Quail, Mike -- Willey, Dave -- Hunt, Adrienne -- Burton, John -- Sims, Sarah -- McLay, Kirsten -- Plumb, Bob -- Davis, Joy -- Clee, Chris -- Oliver, Karen -- Clark, Richard -- Riddle, Clare -- Elliot, David -- Threadgold, Glen -- Harden, Glenn -- Ware, Darren -- Begum, Sharmin -- Mortimore, Beverley -- Kerry, Giselle -- Heath, Paul -- Phillimore, Benjamin -- Tracey, Alan -- Corby, Nicole -- Dunn, Matthew -- Johnson, Christopher -- Wood, Jonathan -- Clark, Susan -- Pelan, Sarah -- Griffiths, Guy -- Smith, Michelle -- Glithero, Rebecca -- Howden, Philip -- Barker, Nicholas -- Lloyd, Christine -- Stevens, Christopher -- Harley, Joanna -- Holt, Karen -- Panagiotidis, Georgios -- Lovell, Jamieson -- Beasley, Helen -- Henderson, Carl -- Gordon, Daria -- Auger, Katherine -- Wright, Deborah -- Collins, Joanna -- Raisen, Claire -- Dyer, Lauren -- Leung, Kenric -- Robertson, Lauren -- Ambridge, Kirsty -- Leongamornlert, Daniel -- McGuire, Sarah -- Gilderthorp, Ruth -- Griffiths, Coline -- Manthravadi, Deepa -- Nichol, Sarah -- Barker, Gary -- Whitehead, Siobhan -- Kay, Michael -- Brown, Jacqueline -- Murnane, Clare -- Gray, Emma -- Humphries, Matthew -- Sycamore, Neil -- Barker, Darren -- Saunders, David -- Wallis, Justene -- Babbage, Anne -- Hammond, Sian -- Mashreghi-Mohammadi, Maryam -- Barr, Lucy -- Martin, Sancha -- Wray, Paul -- Ellington, Andrew -- Matthews, Nicholas -- Ellwood, Matthew -- Woodmansey, Rebecca -- Clark, Graham -- Cooper, James D -- Tromans, Anthony -- Grafham, Darren -- Skuce, Carl -- Pandian, Richard -- Andrews, Robert -- Harrison, Elliot -- Kimberley, Andrew -- Garnett, Jane -- Fosker, Nigel -- Hall, Rebekah -- Garner, Patrick -- Kelly, Daniel -- Bird, Christine -- Palmer, Sophie -- Gehring, Ines -- Berger, Andrea -- Dooley, Christopher M -- Ersan-Urun, Zubeyde -- Eser, Cigdem -- Geiger, Horst -- Geisler, Maria -- Karotki, Lena -- Kirn, Anette -- Konantz, Judith -- Konantz, Martina -- Oberlander, Martina -- Rudolph-Geiger, Silke -- Teucke, Mathias -- Lanz, Christa -- Raddatz, Gunter -- Osoegawa, Kazutoyo -- Zhu, Baoli -- Rapp, Amanda -- Widaa, Sara -- Langford, Cordelia -- Yang, Fengtang -- Schuster, Stephan C -- Carter, Nigel P -- Harrow, Jennifer -- Ning, Zemin -- Herrero, Javier -- Searle, Steve M J -- Enright, Anton -- Geisler, Robert -- Plasterk, Ronald H A -- Lee, Charles -- Westerfield, Monte -- de Jong, Pieter J -- Zon, Leonard I -- Postlethwait, John H -- Nusslein-Volhard, Christiane -- Hubbard, Tim J P -- Roest Crollius, Hugues -- Rogers, Jane -- Stemple, Derek L -- 095908/Wellcome Trust/United Kingdom -- 098051/Wellcome Trust/United Kingdom -- 1 R01 DK55377-01A1/DK/NIDDK NIH HHS/ -- P01 HD022486/HD/NICHD NIH HHS/ -- P01 HD22486/HD/NICHD NIH HHS/ -- R01 GM085318/GM/NIGMS NIH HHS/ -- R01 OD011116/OD/NIH HHS/ -- R01 RR010715/RR/NCRR NIH HHS/ -- R01 RR020833/RR/NCRR NIH HHS/ -- England -- Nature. 2013 Apr 25;496(7446):498-503. doi: 10.1038/nature12111. Epub 2013 Apr 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23594743" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosomes/genetics ; Conserved Sequence/*genetics ; Evolution, Molecular ; Female ; Genes/genetics ; Genome/*genetics ; Genome, Human/genetics ; Genomics ; Humans ; Male ; Meiosis/genetics ; Molecular Sequence Annotation ; Pseudogenes/genetics ; Reference Standards ; Sex Determination Processes/genetics ; Zebrafish/*genetics ; Zebrafish Proteins/genetics
    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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    2.8 million years of Arctic climate change from Lake El'gygytgyn, NE Russia (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-06-23
    Description: The reliability of Arctic climate predictions is currently hampered by insufficient knowledge of natural climate variability in the past. A sediment core from Lake El'gygytgyn in northeastern (NE) Russia provides a continuous, high-resolution record from the Arctic, spanning the past 2.8 million years. This core reveals numerous "super interglacials" during the Quaternary; for marine benthic isotope stages (MIS) 11c and 31, maximum summer temperatures and annual precipitation values are ~4 degrees to 5 degrees C and ~300 millimeters higher than those of MIS 1 and 5e. Climate simulations show that these extreme warm conditions are difficult to explain with greenhouse gas and astronomical forcing alone, implying the importance of amplifying feedbacks and far field influences. The timing of Arctic warming relative to West Antarctic Ice Sheet retreats implies strong interhemispheric climate connectivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Melles, Martin -- Brigham-Grette, Julie -- Minyuk, Pavel S -- Nowaczyk, Norbert R -- Wennrich, Volker -- DeConto, Robert M -- Anderson, Patricia M -- Andreev, Andrei A -- Coletti, Anthony -- Cook, Timothy L -- Haltia-Hovi, Eeva -- Kukkonen, Maaret -- Lozhkin, Anatoli V -- Rosen, Peter -- Tarasov, Pavel -- Vogel, Hendrik -- Wagner, Bernd -- New York, N.Y. -- Science. 2012 Jul 20;337(6092):315-20. doi: 10.1126/science.1222135. Epub 2012 Jun 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Geology and Mineralogy, University of Cologne, Zuelpicher Strasse 49a, D-50674 Cologne, Germany. mmelles@uni-koeln.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22722254" target="_blank"〉PubMed〈/a〉
    Keywords: Arctic Regions ; *Climate Change ; *Cold Climate ; Geologic Sediments ; Ice Cover ; *Lakes ; Radiometric Dating ; Russia ; Time Factors
    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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  • 8
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    Response to comments on "Invasive harlequin ladybird carries biological weapons against native competitors" (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-09-21
    Description: Comments by de Jong et al., Solter et al., and Sloggett question the ecological relevance of the abundant microsporidia found in the invasive ladybird Harmonia axyridis. We contend that there is abundant evidence that native ladybirds feed on H. axyridis eggs and that interspecific microsporidial transfer is a common phenomenon, supporting the proposed role of these parasites as biological weapons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vilcinskas, Andreas -- Stoecker, Kilian -- Schmidtberg, Henrike -- Rohrich, Christian R -- Vogel, Heiko -- New York, N.Y. -- Science. 2013 Sep 20;341(6152):1342. doi: 10.1126/science.1242484.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Phytopathology and Applied Zoology, Heinrich-Buff-Ring 26-32, Justus-Liebig-University of Giessen, D-35392 Giessen, Germany. andreas.vilcinskas@agrar.uni-giessen.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24052293" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Beetles/*parasitology/*physiology ; *Food Chain ; *Introduced Species ; Nosema/*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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  • 9
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    Nogo-A is a negative regulator of CNS angiogenesis [Neuroscience] (2013)
    National Academy of Sciences
    Details
    Publication Date: 2013-05-22
    Description: Nogo-A is an important axonal growth inhibitor in the adult and developing CNS. In vitro, Nogo-A has been shown to inhibit migration and cell spreading of neuronal and nonneuronal cell types. Here, we studied in vivo and in vitro effects of Nogo-A on vascular endothelial cells during angiogenesis of the...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 10
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    Inappropriate p53 activation during development induces features of CHARGE syndrome (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-08-15
    Description: CHARGE syndrome is a multiple anomaly disorder in which patients present with a variety of phenotypes, including ocular coloboma, heart defects, choanal atresia, retarded growth and development, genitourinary hypoplasia and ear abnormalities. Despite 70-90% of CHARGE syndrome cases resulting from mutations in the gene CHD7, which encodes an ATP-dependent chromatin remodeller, the pathways underlying the diverse phenotypes remain poorly understood. Surprisingly, our studies of a knock-in mutant mouse strain that expresses a stabilized and transcriptionally dead variant of the tumour-suppressor protein p53 (p53(25,26,53,54)), along with a wild-type allele of p53 (also known as Trp53), revealed late-gestational embryonic lethality associated with a host of phenotypes that are characteristic of CHARGE syndrome, including coloboma, inner and outer ear malformations, heart outflow tract defects and craniofacial defects. We found that the p53(25,26,53,54) mutant protein stabilized and hyperactivated wild-type p53, which then inappropriately induced its target genes and triggered cell-cycle arrest or apoptosis during development. Importantly, these phenotypes were only observed with a wild-type p53 allele, as p53(25,26,53,54)(/-) embryos were fully viable. Furthermore, we found that CHD7 can bind to the p53 promoter, thereby negatively regulating p53 expression, and that CHD7 loss in mouse neural crest cells or samples from patients with CHARGE syndrome results in p53 activation. Strikingly, we found that p53 heterozygosity partially rescued the phenotypes in Chd7-null mouse embryos, demonstrating that p53 contributes to the phenotypes that result from CHD7 loss. Thus, inappropriate p53 activation during development can promote CHARGE phenotypes, supporting the idea that p53 has a critical role in developmental syndromes and providing important insight into the mechanisms underlying CHARGE syndrome.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4192026/" 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/PMC4192026/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Van Nostrand, Jeanine L -- Brady, Colleen A -- Jung, Heiyoun -- Fuentes, Daniel R -- Kozak, Margaret M -- Johnson, Thomas M -- Lin, Chieh-Yu -- Lin, Chien-Jung -- Swiderski, Donald L -- Vogel, Hannes -- Bernstein, Jonathan A -- Attie-Bitach, Tania -- Chang, Ching-Pin -- Wysocka, Joanna -- Martin, Donna M -- Attardi, Laura D -- 1F31CA167917-01/CA/NCI NIH HHS/ -- F31 CA167917/CA/NCI NIH HHS/ -- R01 CA140875/CA/NCI NIH HHS/ -- R01 DC009410/DC/NIDCD NIH HHS/ -- R01 GM095555/GM/NIGMS NIH HHS/ -- R01 HL118087/HL/NHLBI NIH HHS/ -- R01HL121197/HL/NHLBI NIH HHS/ -- England -- Nature. 2014 Oct 9;514(7521):228-32. doi: 10.1038/nature13585. Epub 2014 Aug 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Radiation Oncology, Division of Radiation and Cancer Biology, Stanford University School of Medicine, Stanford, California 94305, USA. ; 1] Department of Radiation Oncology, Division of Radiation and Cancer Biology, Stanford University School of Medicine, Stanford, California 94305, USA [2] Cardiovascular Research Center and Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, USA (C.A.B.); Department of Medicine, University of Central Florida, Orlando, Florida 32827, USA (M.M.K.); Department of Emergency Medicine, Oregon Health and Science University, Portland, Oregon 97239, USA (T.M.J.). ; Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Developmental Biology, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Otolaryngology, The University of Michigan Medical School, Ann Arbor, Michigan 48109, USA. ; Department of Pediatrics, Stanford University School of Medicine, Stanford, California 94305, USA. ; 1] Departement de Genetique, Hopital Necker-Enfants Malades, APHP, 75015 Paris, France [2] Unite INSERM U1163, Universite Paris Descartes-Sorbonne Paris Cite, Institut Imagine, 75015 Paris, France. ; Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA. ; 1] Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, California 94305, USA [2] Department of Developmental Biology, Stanford University School of Medicine, Stanford, California 94305, USA. ; 1] Department of Pediatrics, The University of Michigan Medical School, Ann Arbor, Michigan 48109, USA [2] Department of Human Genetics, The University of Michigan Medical School, Ann Arbor, Michigan 48109, USA. ; 1] Department of Radiation Oncology, Division of Radiation and Cancer Biology, Stanford University School of Medicine, Stanford, California 94305, USA [2] Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25119037" target="_blank"〉PubMed〈/a〉
    Keywords: Abnormalities, Multiple/genetics/*metabolism ; Alleles ; Animals ; Apoptosis/genetics ; CHARGE Syndrome/*genetics/*metabolism ; Cell Cycle Checkpoints/genetics ; Craniofacial Abnormalities/genetics/metabolism ; DNA-Binding Proteins/deficiency/genetics/metabolism ; Ear/abnormalities ; Embryo, Mammalian/abnormalities/metabolism ; Female ; Fibroblasts ; Gene Deletion ; Heterozygote ; Humans ; Male ; Mice ; Mutant Proteins/metabolism ; *Phenotype ; Promoter Regions, Genetic/genetics ; Tumor Suppressor Protein p53/*genetics/*metabolism
    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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