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  • 1
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    Salinomycin induces cell death via inactivation of Stat3 and downregulation of Skp2 (2013)
    Springer Nature
    Details
    Publication Date: 2013-06-28
    Description: Salinomycin induces cell death via inactivation of Stat3 and downregulation of Skp2 Cell Death and Disease 4, e693 (June 2013). doi:10.1038/cddis.2013.223 Authors: K H Koo, H Kim, Y-K Bae, K Kim, B-K Park, C-H Lee & Y-N Kim
    Keywords: salinomycinStat3Skp2multidrug resistancecancer stem cells
    Electronic ISSN: 2041-4889
    Topics: Biology , Medicine
    Published by Springer Nature
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  • 2
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    The –YENPTY– domain of the amyloid precursor protein: Much more than just endocytosis? (Comment on DOI 10.1002/bies.201300041) (2013)
    Wiley
    In: BioEssays
    Details
    Publication Date: 2013-09-15
    Print ISSN: 0265-9247
    Electronic ISSN: 1521-1878
    Topics: Biology , Medicine
    Published by Wiley
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  • 3
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    A novel lipid II flippase [Microbiology] (2015)
    National Academy of Sciences
    Details
    Publication Date: 2015-05-20
    Description: Bacterial surface polysaccharides are synthesized from lipid-linked precursors at the inner surface of the cytoplasmic membrane before being translocated across the bilayer for envelope assembly. Transport of the cell wall precursor lipid II in Escherichia coli requires the broadly conserved and essential multidrug/oligosaccharidyl-lipid/polysaccharide (MOP) exporter superfamily member MurJ. Here, we...
    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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  • 4
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    A Case Study of a Transported Bromine Explosion Event in the Canadian High Arctic〉 (2015)
    Wiley
    Details
    Publication Date: 2015-12-09
    Description: Ozone depletion events in the polar troposphere have been linked to extremely high concentrations of bromine, known as bromine explosion events (BEE). However the optimum meteorological conditions for the occurrence of these events remain uncertain. On 4–5 April 2011, a combination of both blowing snow and a stable shallow boundary layer was observed during a BEE at Eureka, Canada (86.4°W, 80.1°N). Measurements made by a Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) spectrometer were used to retrieve BrO profiles and partial columns. During this event, the near-surface BrO volume mixing ratio increased to ~20 pptv, while ozone was depleted to ~1 ppbv from the surface to 700 m. Back-trajectories and GOME-2 satellite tropospheric BrO columns confirmed that this event originated from a bromine explosion over the Beaufort Sea. From 30 to 31 March, meteorological data showed high wind speeds (24 m/s) and elevated boundary layer heights (~800 m) over the Beaufort Sea. Long-distance transportation (~1,800 km over five days) to Eureka indicated strong recycling of BrO within the bromine plume. This event was generally captured by a global chemistry-climate model when a sea-salt bromine source from blowing snow was included. A model sensitivity study indicated that the surface BrO at Eureka was controlled by both local photochemistry and boundary layer dynamics. Comparison of the model results with both ground-based and satellite measurements confirmed that the BEE observed at Eureka was triggered by transport of enhanced BrO from the Beaufort Sea followed by local production/recycling under stable atmospheric shallow boundary layer conditions.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 5
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    Complex Relationships between Substrate Sequence and Sensitivity to Alterations in γ-Secretase Processivity Induced by γ-Secretase Modulators (2014)
    American Chemical Society (ACS)
    Details
    Publication Date: 2014-03-21
    Description: Biochemistry DOI: 10.1021/bi401521t
    Print ISSN: 0006-2960
    Electronic ISSN: 1520-4995
    Topics: Biology , Chemistry and Pharmacology
    Published by American Chemical Society (ACS)
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  • 6
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    Observations of inorganic bromine (HOBr, BrO, and Br2) speciation at Barrow, Alaska, in spring 2009 (2012)
    Wiley
    Details
    Publication Date: 2012-03-30
    Description: Inorganic bromine plays a critical role in ozone and mercury depletions events (ODEs and MDEs) in the Arctic marine boundary layer. Direct observations of bromine species other than bromine oxide (BrO) during ODEs are very limited. Here we report the first direct measurements of hypobromous acid (HOBr) as well as observations of BrO and molecular bromine (Br2) by chemical ionization mass spectrometry at Barrow, Alaska in spring 2009 during the Ocean-Atmospheric-Sea Ice-Snowpack (OASIS) campaign. Diurnal profiles of HOBr with maximum concentrations near local noon and no significant concentrations at night were observed. The measured average daytime HOBr mixing ratio was 10 pptv with a maximum value of 26 pptv. The observed HOBr was reasonably well correlated (R2 = 0.57) with predictions from a simple steady state photochemical model constrained to observed BrO and HO2 at wind speeds
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 7
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    Substrate-targeting gamma-secretase modulators (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-06-13
    Description: Selective lowering of Abeta42 levels (the 42-residue isoform of the amyloid-beta peptide) with small-molecule gamma-secretase modulators (GSMs), such as some non-steroidal anti-inflammatory drugs, is a promising therapeutic approach for Alzheimer's disease. To identify the target of these agents we developed biotinylated photoactivatable GSMs. GSM photoprobes did not label the core proteins of the gamma-secretase complex, but instead labelled the beta-amyloid precursor protein (APP), APP carboxy-terminal fragments and amyloid-beta peptide in human neuroglioma H4 cells. Substrate labelling was competed by other GSMs, and labelling of an APP gamma-secretase substrate was more efficient than a Notch substrate. GSM interaction was localized to residues 28-36 of amyloid-beta, a region critical for aggregation. We also demonstrate that compounds known to interact with this region of amyloid-beta act as GSMs, and some GSMs alter the production of cell-derived amyloid-beta oligomers. Furthermore, mutation of the GSM binding site in the APP alters the sensitivity of the substrate to GSMs. These findings indicate that substrate targeting by GSMs mechanistically links two therapeutic actions: alteration in Abeta42 production and inhibition of amyloid-beta aggregation, which may synergistically reduce amyloid-beta deposition in Alzheimer's disease. These data also demonstrate the existence and feasibility of 'substrate targeting' by small-molecule effectors of proteolytic enzymes, which if generally applicable may significantly broaden the current notion of 'druggable' targets.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2678541/" 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/PMC2678541/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kukar, Thomas L -- Ladd, Thomas B -- Bann, Maralyssa A -- Fraering, Patrick C -- Narlawar, Rajeshwar -- Maharvi, Ghulam M -- Healy, Brent -- Chapman, Robert -- Welzel, Alfred T -- Price, Robert W -- Moore, Brenda -- Rangachari, Vijayaraghavan -- Cusack, Bernadette -- Eriksen, Jason -- Jansen-West, Karen -- Verbeeck, Christophe -- Yager, Debra -- Eckman, Christopher -- Ye, Wenjuan -- Sagi, Sarah -- Cottrell, Barbara A -- Torpey, Justin -- Rosenberry, Terrone L -- Fauq, Abdul -- Wolfe, Michael S -- Schmidt, Boris -- Walsh, Dominic M -- Koo, Edward H -- Golde, Todd E -- P01 AG020206/AG/NIA NIH HHS/ -- P01 AG020206-010002/AG/NIA NIH HHS/ -- R01 AG017574/AG/NIA NIH HHS/ -- R01 AG017574-08/AG/NIA NIH HHS/ -- R01 AG017574-09/AG/NIA NIH HHS/ -- R01 NS041355/NS/NINDS NIH HHS/ -- R01 NS041355-06A2/NS/NINDS NIH HHS/ -- R01 NS041355-07/NS/NINDS NIH HHS/ -- England -- Nature. 2008 Jun 12;453(7197):925-9. doi: 10.1038/nature07055.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Mayo Clinic, Mayo Clinic College of Medicine, 4500 San Pablo Road, Jacksonville, Florida 32224, USA. kukar.thomas@mayo.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18548070" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/drug therapy/enzymology/metabolism ; Amyloid Precursor Protein Secretases/*antagonists & inhibitors/*metabolism ; Amyloid beta-Protein Precursor/antagonists & ; inhibitors/*chemistry/genetics/*metabolism ; Animals ; Anti-Inflammatory Agents, Non-Steroidal/chemistry/*metabolism/*pharmacology ; Binding Sites/drug effects ; CHO Cells ; Cell Line, Tumor ; Cricetinae ; Cricetulus ; Female ; Humans ; Mice ; Protein Binding/drug effects ; Receptors, Notch/genetics/metabolism ; Substrate Specificity/drug effects
    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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  • 8
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    Evidence that beta-amyloid protein in Alzheimer's disease is not derived by normal processing (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-04-27
    Description: The beta-amyloid protein (beta/A4), derived from a larger amyloid precursor protein (APP), is the principal component of senile plaques in Alzheimer's disease. APP is an integral membrane glycoprotein and is secreted as a carboxyl-terminal truncated molecule. APP cleavage, which is a membrane-associated event, occurred at a site located within the beta/A4 region. This suggests that an intact amyloidogenic beta/A4 fragment is not generated during normal APP catabolism. Therefore, an early event in amyloid formation may involve altered APP processing that results in the release and subsequent deposition of intact beta/A4.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sisodia, S S -- Koo, E H -- Beyreuther, K -- Unterbeck, A -- Price, D L -- AG 03359/AG/NIA NIH HHS/ -- AG 05146/AG/NIA NIH HHS/ -- AG 07914/AG/NIA NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1990 Apr 27;248(4954):492-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205-2181.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1691865" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Alzheimer Disease/*metabolism ; Amyloid/genetics/*metabolism ; Amyloid beta-Peptides ; Amyloid beta-Protein Precursor ; Animals ; Cell Membrane ; Cells, Cultured ; Cloning, Molecular ; DNA, Recombinant ; Glycosylation ; Half-Life ; Humans ; Immunoblotting ; Molecular Weight ; Plasmids ; Protein Precursors/genetics/*metabolism ; *Protein Processing, Post-Translational ; Recombinant Fusion Proteins/metabolism ; Substance P/genetics ; Transfection
    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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  • 9
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    Generation of compartmentalized pressure by a nuclear piston governs cell motility in a 3D matrix (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-08-30
    Description: Cells use actomyosin contractility to move through three-dimensional (3D) extracellular matrices. Contractility affects the type of protrusions cells use to migrate in 3D, but the mechanisms are unclear. In this work, we found that contractility generated high-pressure lobopodial protrusions in human cells migrating in a 3D matrix. In these cells, the nucleus physically divided the cytoplasm into forward and rear compartments. Actomyosin contractility with the nucleoskeleton-intermediate filament linker protein nesprin-3 pulled the nucleus forward and pressurized the front of the cell. Reducing expression of nesprin-3 decreased and equalized the intracellular pressure. Thus, the nucleus can act as a piston that physically compartmentalizes the cytoplasm and increases the hydrostatic pressure between the nucleus and the leading edge of the cell to drive lamellipodia-independent 3D cell migration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Petrie, Ryan J -- Koo, Hyun -- Yamada, Kenneth M -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2014 Aug 29;345(6200):1062-5. doi: 10.1126/science.1256965.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4370, USA. petrier@mail.nih.gov kyamada@mail.nih.gov. ; Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892-4370, USA. Center for Oral Biology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY 14642, USA. Biofilm Research Labs, Levy Center for Oral Health, Department of Orthodontics, University of Pennsylvania School of Dental Medicine, Philadelphia, PA 19104-6030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25170155" target="_blank"〉PubMed〈/a〉
    Keywords: Actomyosin/physiology ; Cell Movement/*physiology ; Cell Nucleus/*physiology ; Cells, Cultured ; Cytoplasm/physiology ; Extracellular Matrix/*physiology/ultrastructure ; Fibroblasts/*physiology ; Humans ; Hydrostatic Pressure ; Microfilament Proteins ; Pseudopodia/*physiology ; Vimentin/metabolism
    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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  • 10
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    The genome sequence of Trypanosoma cruzi, etiologic agent of Chagas disease (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-07-16
    Description: Whole-genome sequencing of the protozoan pathogen Trypanosoma cruzi revealed that the diploid genome contains a predicted 22,570 proteins encoded by genes, of which 12,570 represent allelic pairs. Over 50% of the genome consists of repeated sequences, such as retrotransposons and genes for large families of surface molecules, which include trans-sialidases, mucins, gp63s, and a large novel family (〉1300 copies) of mucin-associated surface protein (MASP) genes. Analyses of the T. cruzi, T. brucei, and Leishmania major (Tritryp) genomes imply differences from other eukaryotes in DNA repair and initiation of replication and reflect their unusual mitochondrial DNA. Although the Tritryp lack several classes of signaling molecules, their kinomes contain a large and diverse set of protein kinases and phosphatases; their size and diversity imply previously unknown interactions and regulatory processes, which may be targets for intervention.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉El-Sayed, Najib M -- Myler, Peter J -- Bartholomeu, Daniella C -- Nilsson, Daniel -- Aggarwal, Gautam -- Tran, Anh-Nhi -- Ghedin, Elodie -- Worthey, Elizabeth A -- Delcher, Arthur L -- Blandin, Gaelle -- Westenberger, Scott J -- Caler, Elisabet -- Cerqueira, Gustavo C -- Branche, Carole -- Haas, Brian -- Anupama, Atashi -- Arner, Erik -- Aslund, Lena -- Attipoe, Philip -- Bontempi, Esteban -- Bringaud, Frederic -- Burton, Peter -- Cadag, Eithon -- Campbell, David A -- Carrington, Mark -- Crabtree, Jonathan -- Darban, Hamid -- da Silveira, Jose Franco -- de Jong, Pieter -- Edwards, Kimberly -- Englund, Paul T -- Fazelina, Gholam -- Feldblyum, Tamara -- Ferella, Marcela -- Frasch, Alberto Carlos -- Gull, Keith -- Horn, David -- Hou, Lihua -- Huang, Yiting -- Kindlund, Ellen -- Klingbeil, Michele -- Kluge, Sindy -- Koo, Hean -- Lacerda, Daniela -- Levin, Mariano J -- Lorenzi, Hernan -- Louie, Tin -- Machado, Carlos Renato -- McCulloch, Richard -- McKenna, Alan -- Mizuno, Yumi -- Mottram, Jeremy C -- Nelson, Siri -- Ochaya, Stephen -- Osoegawa, Kazutoyo -- Pai, Grace -- Parsons, Marilyn -- Pentony, Martin -- Pettersson, Ulf -- Pop, Mihai -- Ramirez, Jose Luis -- Rinta, Joel -- Robertson, Laura -- Salzberg, Steven L -- Sanchez, Daniel O -- Seyler, Amber -- Sharma, Reuben -- Shetty, Jyoti -- Simpson, Anjana J -- Sisk, Ellen -- Tammi, Martti T -- Tarleton, Rick -- Teixeira, Santuza -- Van Aken, Susan -- Vogt, Christy -- Ward, Pauline N -- Wickstead, Bill -- Wortman, Jennifer -- White, Owen -- Fraser, Claire M -- Stuart, Kenneth D -- Andersson, Bjorn -- AI045039/AI/NIAID NIH HHS/ -- AI45038/AI/NIAID NIH HHS/ -- AI45061/AI/NIAID NIH HHS/ -- R01 AI031077/AI/NIAID NIH HHS/ -- R01 AI031077-11/AI/NIAID NIH HHS/ -- U01 AI045038/AI/NIAID NIH HHS/ -- U01 AI045039/AI/NIAID NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2005 Jul 15;309(5733):409-15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Parasite Genomics, Institute for Genomic Research, Rockville, MD 20850, USA. nelsayed@tigr.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16020725" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chagas Disease/drug therapy/parasitology ; DNA Repair ; DNA Replication ; DNA, Mitochondrial/genetics ; DNA, Protozoan/genetics ; Genes, Protozoan ; *Genome, Protozoan ; Humans ; Meiosis ; Membrane Proteins/chemistry/genetics/physiology ; Multigene Family ; Protozoan Proteins/chemistry/*genetics/physiology ; Recombination, Genetic ; Repetitive Sequences, Nucleic Acid ; Retroelements ; *Sequence Analysis, DNA ; Signal Transduction ; Telomere/genetics ; Trypanocidal Agents/pharmacology/therapeutic use ; Trypanosoma cruzi/chemistry/*genetics/physiology
    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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