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  • *Ice Cover  (3)
  • Base Sequence  (2)
  • American Association for the Advancement of Science (AAAS)  (5)
  • 2010-2014  (4)
  • 1990-1994  (1)
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  • 1
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    Oncostatin M as a potent mitogen for AIDS-Kaposi's sarcoma-derived cells (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-03-13
    Description: Oncostatin M, a cytokine produced by activated lymphoid cells, regulates the growth and differentiation of a number of tumor and normal cells. In contrast to its effects on normal endothelial and aortic smooth muscle cell cultures, Oncostatin M was a potent mitogen for cells derived from acquired immunodeficiency syndrome-related Kaposi's sarcoma (AIDS-KS). After exposure to Oncostatin M, AIDS-KS cells assumed a spindle morphology, had an increased ability to proliferate in soft agar, and secreted increased amounts of interleukin-6. Oncostatin M RNA and immunoreactive Oncostatin M protein were found in AIDS-KS-derived cell isolates. These results suggest that Oncostatin M may play a role in the pathogenesis of AIDS-KS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miles, S A -- Martinez-Maza, O -- Rezai, A -- Magpantay, L -- Kishimoto, T -- Nakamura, S -- Radka, S F -- Linsley, P S -- AI27660/AI/NIAID NIH HHS/ -- CA 01588/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1992 Mar 13;255(5050):1432-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UCLA AIDS Center 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1542793" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*complications ; Base Sequence ; Cell Division/drug effects ; Growth Substances/biosynthesis/*physiology ; Humans ; Molecular Sequence Data ; Neoplasm Proteins/biosynthesis ; Oncostatin M ; Peptide Biosynthesis ; Peptides/*physiology ; Recombinant Proteins/pharmacology ; Sarcoma, Kaposi/etiology/metabolism/*pathology ; Tumor Cells, Cultured
    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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  • 2
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    Five-vertebrate ChIP-seq reveals the evolutionary dynamics of transcription factor binding (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-04-10
    Description: Transcription factors (TFs) direct gene expression by binding to DNA regulatory regions. To explore the evolution of gene regulation, we used chromatin immunoprecipitation with high-throughput sequencing (ChIP-seq) to determine experimentally the genome-wide occupancy of two TFs, CCAAT/enhancer-binding protein alpha and hepatocyte nuclear factor 4 alpha, in the livers of five vertebrates. Although each TF displays highly conserved DNA binding preferences, most binding is species-specific, and aligned binding events present in all five species are rare. Regions near genes with expression levels that are dependent on a TF are often bound by the TF in multiple species yet show no enhanced DNA sequence constraint. Binding divergence between species can be largely explained by sequence changes to the bound motifs. Among the binding events lost in one lineage, only half are recovered by another binding event within 10 kilobases. Our results reveal large interspecies differences in transcriptional regulation and provide insight into regulatory evolution.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3008766/" 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/PMC3008766/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmidt, Dominic -- Wilson, Michael D -- Ballester, Benoit -- Schwalie, Petra C -- Brown, Gordon D -- Marshall, Aileen -- Kutter, Claudia -- Watt, Stephen -- Martinez-Jimenez, Celia P -- Mackay, Sarah -- Talianidis, Iannis -- Flicek, Paul -- Odom, Duncan T -- 062023/Wellcome Trust/United Kingdom -- 079643/Wellcome Trust/United Kingdom -- 15603/Cancer Research UK/United Kingdom -- 202218/European Research Council/International -- A15603/Cancer Research UK/United Kingdom -- WT062023/Wellcome Trust/United Kingdom -- WT079643/Wellcome Trust/United Kingdom -- Cancer Research UK/United Kingdom -- New York, N.Y. -- Science. 2010 May 21;328(5981):1036-40. doi: 10.1126/science.1186176. Epub 2010 Apr 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20378774" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; Base Sequence ; Binding Sites ; Biological Evolution ; CCAAT-Enhancer-Binding Protein-alpha/*metabolism ; Chickens/genetics ; Chromatin Immunoprecipitation ; DNA/genetics/metabolism ; Dogs ; *Evolution, Molecular ; *Gene Expression Regulation ; *Genome ; Genome, Human ; Hepatocyte Nuclear Factor 4/*metabolism ; Humans ; Liver/*metabolism ; Mice ; Opossums/genetics ; Protein Binding ; Regulatory Sequences, Nucleic Acid ; Sequence Analysis, DNA ; Species Specificity ; Vertebrates/*genetics/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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  • 3
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    Iron fertilization of the Subantarctic ocean during the last ice age (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-03-22
    Description: John H. Martin, who discovered widespread iron limitation of ocean productivity, proposed that dust-borne iron fertilization of Southern Ocean phytoplankton caused the ice age reduction in atmospheric carbon dioxide (CO2). In a sediment core from the Subantarctic Atlantic, we measured foraminifera-bound nitrogen isotopes to reconstruct ice age nitrate consumption, burial fluxes of iron, and proxies for productivity. Peak glacial times and millennial cold events are characterized by increases in dust flux, productivity, and the degree of nitrate consumption; this combination is uniquely consistent with Subantarctic iron fertilization. The associated strengthening of the Southern Ocean's biological pump can explain the lowering of CO2 at the transition from mid-climate states to full ice age conditions as well as the millennial-scale CO2 oscillations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez-Garcia, Alfredo -- Sigman, Daniel M -- Ren, Haojia -- Anderson, Robert F -- Straub, Marietta -- Hodell, David A -- Jaccard, Samuel L -- Eglinton, Timothy I -- Haug, Gerald H -- New York, N.Y. -- Science. 2014 Mar 21;343(6177):1347-50. doi: 10.1126/science.1246848.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geological Institute, ETH Zurich, 8092 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24653031" target="_blank"〉PubMed〈/a〉
    Keywords: Antarctic Regions ; Atlantic Ocean ; Atmosphere ; Biomass ; *Carbon Dioxide/analysis ; *Climate ; Cold Temperature ; Foraminifera/chemistry/metabolism ; *Geologic Sediments/chemistry ; *Ice Cover ; *Iron/analysis ; Nitrates/analysis/metabolism ; Nitrogen Isotopes/analysis ; Phytoplankton/growth & development/metabolism ; Seawater/chemistry ; Time
    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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    Increased dust deposition in the Pacific Southern Ocean during glacial periods (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-01-25
    Description: Dust deposition in the Southern Ocean constitutes a critical modulator of past global climate variability, but how it has varied temporally and geographically is underdetermined. Here, we present data sets of glacial-interglacial dust-supply cycles from the largest Southern Ocean sector, the polar South Pacific, indicating three times higher dust deposition during glacial periods than during interglacials for the past million years. Although the most likely dust source for the South Pacific is Australia and New Zealand, the glacial-interglacial pattern and timing of lithogenic sediment deposition is similar to dust records from Antarctica and the South Atlantic dominated by Patagonian sources. These similarities imply large-scale common climate forcings, such as latitudinal shifts of the southern westerlies and regionally enhanced glaciogenic dust mobilization in New Zealand and Patagonia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lamy, F -- Gersonde, R -- Winckler, G -- Esper, O -- Jaeschke, A -- Kuhn, G -- Ullermann, J -- Martinez-Garcia, A -- Lambert, F -- Kilian, R -- New York, N.Y. -- Science. 2014 Jan 24;343(6169):403-7. doi: 10.1126/science.1245424.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Alfred-Wegener-Institut (AWI) Helmholtz-Zentrum fur Polar- und Meeresforschung, Bremerhaven, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24458637" target="_blank"〉PubMed〈/a〉
    Keywords: Climate Change ; *Dust ; *Geologic Sediments ; *Ice Cover ; New Zealand ; Pacific Ocean ; *Seawater
    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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  • 5
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    A stagnation event in the deep South Atlantic during the last interglacial period (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-12-20
    Description: During the last interglacial period, global temperatures were ~2 degrees C warmer than at present and sea level was 6 to 8 meters higher. Southern Ocean sediments reveal a spike in authigenic uranium 127,000 years ago, within the last interglacial, reflecting decreased oxygenation of deep water by Antarctic Bottom Water (AABW). Unlike ice age reductions in AABW, the interglacial stagnation event appears decoupled from open ocean conditions and may have resulted from coastal freshening due to mass loss from the Antarctic ice sheet. AABW reduction coincided with increased North Atlantic Deep Water (NADW) formation, and the subsequent reinvigoration in AABW coincided with reduced NADW formation. Thus, alternation of deep water formation between the Antarctic and the North Atlantic, believed to characterize ice ages, apparently also occurs in warm climates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hayes, Christopher T -- Martinez-Garcia, Alfredo -- Hasenfratz, Adam P -- Jaccard, Samuel L -- Hodell, David A -- Sigman, Daniel M -- Haug, Gerald H -- Anderson, Robert F -- New York, N.Y. -- Science. 2014 Dec 19;346(6216):1514-7. doi: 10.1126/science.1256620.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA 02142, USA. Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA. cthayes@mit.edu. ; Geological Institute, ETH Zurich, 8092 Zurich, Switzerland. ; Institute of Geological Sciences and Oeschger Centre for Climate Change Research, University of Bern, 3012 Bern, Switzerland. ; Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, UK. ; Department of Geosciences, Princeton University, Princeton, NJ 08544, USA. ; Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25525246" target="_blank"〉PubMed〈/a〉
    Keywords: Atlantic Ocean ; Climate Change ; *Ice Cover ; Oxygen/analysis ; Salinity ; *Seawater
    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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