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  • 1
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    Quaternary tephra from the Valles caldera in the volcanic field of the Jemez Mountains of New Mexico identified in western Canada (2018)
    Cambridge University Press
    Details
    Publication Date: 2018
    Description: 〈div data-abstract-type="normal"〉〈p〉A fine-grained, up to 3-m-thick tephra bed in southwestern Saskatchewan, herein named Duncairn tephra (Dt), is derived from an early Pleistocene eruption in the Jemez Mountains volcanic field of New Mexico, requiring a trajectory of northward tephra dispersal of ~1500 km. An unusually low CaO content in its glass shards denies a source in the closer Yellowstone and Heise volcanic fields, whereas a Pleistocene tephra bed (LSMt) in the La Sal Mountains of Utah has a very similar glass chemistry to that of the Dt, supporting a more southerly source. Comprehensive characterization of these two distal tephra beds along with samples collected near the Valles caldera in New Mexico, including grain size, mineral assemblage, major- and trace-element composition of glass and minerals, paleomagnetism, and fission-track dating, justify this correlation. Two glass populations each exist in the Dt and LSMt. The proximal correlative of Dt1 is the plinian Tsankawi Pumice and co-ignimbritic ash of the first ignimbrite (Qbt1g) of the 1.24 Ma Tshirege Member of the Bandelier Tuff. The correlative of Dt2 and LSMt is the co-ignimbritic ash of Qbt2. Mixing of Dt1 and Dt2 probably occurred during northward transport in a jet stream.〈/p〉〈/div〉
    Print ISSN: 0033-5894
    Electronic ISSN: 1096-0287
    Topics: Geography , Geosciences
    Published by Cambridge University Press
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  • 2
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    Angiogenesis selectively requires the p110alpha isoform of PI3K to control endothelial cell migration (2008)
    Nature Publishing Group (NPG)
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    Publication Date: 2008-05-02
    Description: Phosphoinositide 3-kinases (PI3Ks) signal downstream of multiple cell-surface receptor types. Class IA PI3K isoforms couple to tyrosine kinases and consist of a p110 catalytic subunit (p110alpha, p110beta or p110delta), constitutively bound to one of five distinct p85 regulatory subunits. PI3Ks have been implicated in angiogenesis, but little is known about potential selectivity among the PI3K isoforms and their mechanism of action in endothelial cells during angiogenesis in vivo. Here we show that only p110alpha activity is essential for vascular development. Ubiquitous or endothelial cell-specific inactivation of p110alpha led to embryonic lethality at mid-gestation because of severe defects in angiogenic sprouting and vascular remodelling. p110alpha exerts this critical endothelial cell-autonomous function by regulating endothelial cell migration through the small GTPase RhoA. p110alpha activity is particularly high in endothelial cells and preferentially induced by tyrosine kinase ligands (such as vascular endothelial growth factor (VEGF)-A). In contrast, p110beta in endothelial cells signals downstream of G-protein-coupled receptor (GPCR) ligands such as SDF-1alpha, whereas p110delta is expressed at low level and contributes only minimally to PI3K activity in endothelial cells. These results provide the first in vivo evidence for p110-isoform selectivity in endothelial PI3K signalling during angiogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Graupera, Mariona -- Guillermet-Guibert, Julie -- Foukas, Lazaros C -- Phng, Li-Kun -- Cain, Robert J -- Salpekar, Ashreena -- Pearce, Wayne -- Meek, Stephen -- Millan, Jaime -- Cutillas, Pedro R -- Smith, Andrew J H -- Ridley, Anne J -- Ruhrberg, Christiana -- Gerhardt, Holger -- Vanhaesebroeck, Bart -- BB/C505659/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/C505659/2/Biotechnology and Biological Sciences Research Council/United Kingdom -- G0601093/Medical Research Council/United Kingdom -- G0601093(79633)/Medical Research Council/United Kingdom -- G0700711/Medical Research Council/United Kingdom -- Cancer Research UK/United Kingdom -- England -- Nature. 2008 May 29;453(7195):662-6. doi: 10.1038/nature06892. Epub 2008 Apr 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Cell Signalling, Institute of Cancer, Queen Mary, University of London, Charterhouse Square, London EC1M 6BQ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18449193" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Movement ; Cells, Cultured ; Class I Phosphatidylinositol 3-Kinases ; Endothelial Cells/*cytology/*enzymology ; Female ; Humans ; Mice ; *Neovascularization, Physiologic ; Phosphatidylinositol 3-Kinases/genetics/*metabolism ; RNA Interference ; Rats ; Signal Transduction/drug effects ; Vascular Endothelial Growth Factor A/pharmacology ; Wounds and Injuries ; rho GTP-Binding Proteins/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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  • 3
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    Amateur scientists: Citizen projects can minimize conflicts (2015)
    Nature Publishing Group (NPG)
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    Publication Date: 2015-09-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pearce-Higgins, James W -- England -- Nature. 2015 Sep 24;525(7570):455. doi: 10.1038/525455b.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉British Trust for Ornithology, Thetford, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26399822" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds ; *Conflict of Interest ; Cost-Benefit Analysis ; Data Collection ; Great Britain ; *Hobbies ; Motivation ; *Research Design ; Science/*manpower ; *Volunteers/psychology
    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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  • 4
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    Inactivation of PI(3)K p110delta breaks regulatory T-cell-mediated immune tolerance to cancer (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-06-12
    Description: Inhibitors against the p110delta isoform of phosphoinositide-3-OH kinase (PI(3)K) have shown remarkable therapeutic efficacy in some human leukaemias. As p110delta is primarily expressed in leukocytes, drugs against p110delta have not been considered for the treatment of solid tumours. Here we report that p110delta inactivation in mice protects against a broad range of cancers, including non-haematological solid tumours. We demonstrate that p110delta inactivation in regulatory T cells unleashes CD8(+) cytotoxic T cells and induces tumour regression. Thus, p110delta inhibitors can break tumour-induced immune tolerance and should be considered for wider use in oncology.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4501086/" 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/PMC4501086/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ali, Khaled -- Soond, Dalya R -- Pineiro, Roberto -- Hagemann, Thorsten -- Pearce, Wayne -- Lim, Ee Lyn -- Bouabe, Hicham -- Scudamore, Cheryl L -- Hancox, Timothy -- Maecker, Heather -- Friedman, Lori -- Turner, Martin -- Okkenhaug, Klaus -- Vanhaesebroeck, Bart -- 095691/Wellcome Trust/United Kingdom -- 095691/Z/11/Z/Wellcome Trust/United Kingdom -- 12888/Cancer Research UK/United Kingdom -- 14355/Cancer Research UK/United Kingdom -- A10200/Cancer Research UK/United Kingdom -- A12888/Cancer Research UK/United Kingdom -- A15965/Cancer Research UK/United Kingdom -- BB/E009867/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- C18270/A12888/Cancer Research UK/United Kingdom -- C23338/A10200/Cancer Research UK/United Kingdom -- C23338/A15965/Cancer Research UK/United Kingdom -- England -- Nature. 2014 Jun 19;510(7505):407-11. doi: 10.1038/nature13444. Epub 2014 Jun 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] UCL Cancer Institute, Paul O'Gorman Building, University College London, 72 Huntley Street London WC1E 6DD, UK [2]. ; 1] Laboratory of Lymphocyte Signalling and Development, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK [2] [3]. ; Centre for Cancer and Inflammation, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK. ; UCL Cancer Institute, Paul O'Gorman Building, University College London, 72 Huntley Street London WC1E 6DD, UK. ; Laboratory of Lymphocyte Signalling and Development, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK. ; Mary Lyon Centre, MRC Harwell, Harwell Science and Innovation Campus, Harwell OX11 0RD, UK. ; Piramed Pharma, 957 Buckingham Avenue, Slough, Berkshire SL1 4NL, UK. ; Cancer Signaling and Translational Oncology, Genentech Inc, 1 DNA Way, South San Francisco, California 94080-4990, USA. ; 1] Laboratory of Lymphocyte Signalling and Development, The Babraham Institute, Babraham Research Campus, Cambridge CB22 3AT, UK [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24919154" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/pharmacology ; Enzyme Activation/drug effects ; Enzyme Inhibitors/*pharmacology ; Immune Tolerance/*drug effects/immunology ; Mice ; Neoplasms/*enzymology/*immunology ; Phosphatidylinositol 3-Kinases/*metabolism ; T-Lymphocytes, Regulatory/*drug effects/enzymology/immunology
    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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    Transparency: issues are not that simple (2016)
    Nature Publishing Group (NPG)
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    Publication Date: 2016-03-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pearce, Warren -- Hartley, Sarah -- Nerlich, Brigitte -- England -- Nature. 2016 Mar 3;531(7592):35. doi: 10.1038/531035d.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Nottingham, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26935688" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; *Information Dissemination ; Research/*standards
    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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    Corrigendum: Inactivation of PI(3)K p110delta breaks regulatory T-cell-mediated immune tolerance to cancer (2016)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2016-04-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ali, Khaled -- Soond, Dalya R -- Pineiro, Roberto -- Hagemann, Thorsten -- Pearce, Wayne -- Lim, Ee Lyn -- Bouabe, Hicham -- Scudamore, Cheryl L -- Hancox, Timothy -- Maecker, Heather -- Friedman, Lori -- Turner, Martin -- Okkenhaug, Klaus -- Vanhaesebroeck, Bart -- Nature. 2016 Apr 6. doi: 10.1038/nature17641.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27049952" target="_blank"〉PubMed〈/a〉
    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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