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  • 1
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    SBF-1 exerts strong anticervical cancer effect through inducing endoplasmic reticulum stress-associated cell death via targeting sarco/endoplasmic reticulum Ca2+-ATPase 2 (2014)
    Springer Nature
    Details
    Publikationsdatum: 2014-12-19
    Beschreibung: SBF-1 exerts strong anticervical cancer effect through inducing endoplasmic reticulum stress-associated cell death via targeting sarco/endoplasmic reticulum Ca2+-ATPase 2 Cell Death and Disease 5, e1581 (December 2014). doi:10.1038/cddis.2014.538 Authors: W Li, Z Ouyang, Q Zhang, L Wang, Y Shen, X Wu, Y Gu, Y Shu, B Yu, X Wu, Y Sun & Q Xu
    Digitale ISSN: 2041-4889
    Thema: Biologie , Medizin
    Publiziert von Springer Nature
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  • 2
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    Suppression of BRCA1 sensitizes cells to proteasome inhibitors (2014)
    Springer Nature
    Details
    Publikationsdatum: 2014-12-19
    Beschreibung: Suppression of BRCA1 sensitizes cells to proteasome inhibitors Cell Death and Disease 5, e1580 (December 2014). doi:10.1038/cddis.2014.537 Authors: Y Gu, P Bouwman, D Greco, J Saarela, B Yadav, J Jonkers & S G Kuznetsov
    Digitale ISSN: 2041-4889
    Thema: Biologie , Medizin
    Publiziert von Springer Nature
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  • 3
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    Asymmetric excitation of surface plasmons by dark mode coupling (2016)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2016-02-21
    Beschreibung: Control over surface plasmons (SPs) is essential in a variety of cutting-edge applications, such as highly integrated photonic signal processing systems, deep-subwavelength lasing, high-resolution imaging, and ultrasensitive biomedical detection. Recently, asymmetric excitation of SPs has attracted enormous interest. In free space, the analog of electromagnetically induced transparency (EIT) in metamaterials has been widely investigated to uniquely manipulate the electromagnetic waves. In the near field, we show that the dark mode coupling mechanism of the classical EIT effect enables an exotic and straightforward excitation of SPs in a metasurface system. This leads to not only resonant excitation of asymmetric SPs but also controllable exotic SP focusing by the use of the Huygens-Fresnel principle. Our experimental findings manifest the potential of developing plasmonic metadevices with unique functionalities.
    Digitale ISSN: 2375-2548
    Thema: Allgemeine Naturwissenschaft
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    A high-spin ground-state donor-acceptor conjugated polymer (2019)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2019
    Beschreibung: 〈p〉Interest in high-spin organic materials is driven by opportunities to enable far-reaching fundamental science and develop technologies that integrate light element spin, magnetic, and quantum functionalities. Although extensively studied, the intrinsic instability of these materials complicates synthesis and precludes an understanding of how fundamental properties associated with the nature of the chemical bond and electron pairing in organic materials systems manifest in practical applications. Here, we demonstrate a conjugated polymer semiconductor, based on alternating cyclopentadithiophene and thiadiazoloquinoxaline units, that is a ground-state triplet in its neutral form. Electron paramagnetic resonance and magnetic susceptibility measurements are consistent with a high-to-low spin energy gap of 9.30 x 10〈sup〉–3〈/sup〉 kcal mol〈sup〉–1〈/sup〉. The strongly correlated electronic structure, very narrow bandgap, intramolecular ferromagnetic coupling, high electrical conductivity, solution processability, and robust stability open access to a broad variety of technologically relevant applications once thought of as beyond the current scope of organic semiconductors.〈/p〉
    Digitale ISSN: 2375-2548
    Thema: Allgemeine Naturwissenschaft
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
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    NDR2 promotes the antiviral immune response via facilitating TRIM25-mediated RIG-I activation in macrophages (2019)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2019
    Beschreibung: 〈p〉Retinoic acid–inducible gene I (RIG-I), a pivotal cytosolic sensor, recognizes viral RNAs to initiate antiviral innate immunity. However, posttranslational regulation of RIG-I signaling is not well understood. We report here that nuclear Dbf2-related kinase 2 (NDR2) functions as a crucial positive regulator of the RIG-I–mediated antiviral immune response. Overexpression of NDR2 or its kinase-inactive mutants potentiates RNA virus–induced production of type I interferons and proinflammatory cytokines and dampens viral replication. NDR2 conditional knockout mice (Lysm〈sup〉+〈/sup〉NDR2〈sup〉f/f〈/sup〉) show an impaired antiviral immune response. Mechanistically, NDR2 directly associates with RIG-I and TRIM25, thus facilitating the RIG-I/TRIM25 complex and enhancing the TRIM25-mediated K63-linked polyubiquitination of RIG-I, which is required for the RIG-I–mediated antiviral immune response. Furthermore, NDR2 expression is notably down-regulated in peripheral blood from respiratory syncytial virus–infected patients and in virus-infected macrophages. Collectively, these findings provide insights into the function of NDR2 in antiviral immunity and its related clinical significance.〈/p〉
    Digitale ISSN: 2375-2548
    Thema: Allgemeine Naturwissenschaft
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Prion-induced amyloid heart disease with high blood infectivity in transgenic mice (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-07-11
    Beschreibung: We investigated extraneural manifestations in scrapie-infected transgenic mice expressing prion protein lacking the glycophosphatydylinositol membrane anchor. In the brain, blood, and heart, both abnormal protease-resistant prion protein (PrPres) and prion infectivity were readily detected by immunoblot and by inoculation into nontransgenic recipients. The titer of infectious scrapie in blood plasma exceeded 10(7) 50% infectious doses per milliliter. The hearts of these transgenic mice contained PrPres-positive amyloid deposits that led to myocardial stiffness and cardiac disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1820586/" 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/PMC1820586/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trifilo, Matthew J -- Yajima, Toshitaka -- Gu, Yusu -- Dalton, Nancy -- Peterson, Kirk L -- Race, Richard E -- Meade-White, Kimberly -- Portis, John L -- Masliah, Eliezer -- Knowlton, Kirk U -- Chesebro, Bruce -- Oldstone, Michael B A -- 5R01HL66424-04/HL/NHLBI NIH HHS/ -- AGO4342/PHS HHS/ -- NS041219-05/NS/NINDS NIH HHS/ -- P01 AG004342/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2006 Jul 7;313(5783):94-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Viral-Immunobiology Laboratory, Departments of Molecular and Integrative Neurosciences and Infectology, Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16825571" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amyloid/*analysis ; Amyloidosis/blood/etiology/*pathology/physiopathology ; Animals ; Blotting, Western ; Cardiac Catheterization ; Coronary Vessels/chemistry/pathology ; Disease Models, Animal ; Glycosylphosphatidylinositols ; Heart Diseases/blood/etiology/*pathology/physiopathology ; Heart Function Tests ; Immunohistochemistry ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Microcirculation/chemistry/pathology ; Myocardial Contraction ; Myocardium/*chemistry/*pathology ; PrPC Proteins/chemistry ; PrPSc Proteins/*analysis/blood ; Scrapie/blood/*pathology/physiopathology ; Staining and Labeling ; Time Factors
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    Domain dynamics during ferroelectric switching (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2011-11-19
    Beschreibung: The utility of ferroelectric materials stems from the ability to nucleate and move polarized domains using an electric field. To understand the mechanisms of polarization switching, structural characterization at the nanoscale is required. We used aberration-corrected transmission electron microscopy to follow the kinetics and dynamics of ferroelectric switching at millisecond temporal and subangstrom spatial resolution in an epitaxial bilayer of an antiferromagnetic ferroelectric (BiFeO(3)) on a ferromagnetic electrode (La(0.7)Sr(0.3)MnO(3)). We observed localized nucleation events at the electrode interface, domain wall pinning on point defects, and the formation of ferroelectric domains localized to the ferroelectric and ferromagnetic interface. These results show how defects and interfaces impede full ferroelectric switching of a thin film.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nelson, Christopher T -- Gao, Peng -- Jokisaari, Jacob R -- Heikes, Colin -- Adamo, Carolina -- Melville, Alexander -- Baek, Seung-Hyub -- Folkman, Chad M -- Winchester, Benjamin -- Gu, Yijia -- Liu, Yuanming -- Zhang, Kui -- Wang, Enge -- Li, Jiangyu -- Chen, Long-Qing -- Eom, Chang-Beom -- Schlom, Darrell G -- Pan, Xiaoqing -- New York, N.Y. -- Science. 2011 Nov 18;334(6058):968-71. doi: 10.1126/science.1206980.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22096196" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Activation of interferon-gamma inducing factor mediated by interleukin-1beta converting enzyme (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-01-10
    Beschreibung: The interleukin-1beta (IL-1beta) converting enzyme (ICE) processes the inactive IL-1beta precursor to the proinflammatory cytokine. ICE was also shown to cleave the precursor of interferon-gamma inducing factor (IGIF) at the authentic processing site with high efficiency, thereby activating IGIF and facilitating its export. Lipopolysaccharide-activated ICE-deficient (ICE-/-) Kupffer cells synthesized the IGIF precursor but failed to process it into the active form. Interferon-gamma and IGIF were diminished in the sera of ICE-/- mice exposed to Propionibacterium acnes and lipopolysaccharide. The lack of multiple proinflammatory cytokines in ICE-/- mice may account for their protection from septic shock.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gu, Y -- Kuida, K -- Tsutsui, H -- Ku, G -- Hsiao, K -- Fleming, M A -- Hayashi, N -- Higashino, K -- Okamura, H -- Nakanishi, K -- Kurimoto, M -- Tanimoto, T -- Flavell, R A -- Sato, V -- Harding, M W -- Livingston, D J -- Su, M S -- New York, N.Y. -- Science. 1997 Jan 10;275(5297):206-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vertex Pharmaceuticals, Inc., 130 Waverly Street, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8999548" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; COS Cells ; Caspase 1 ; Caspase 3 ; *Caspases ; Caspases, Initiator ; Culture Media, Conditioned ; Cysteine Endopeptidases/*metabolism ; Cytokines/blood/*metabolism/pharmacology ; Humans ; Interferon-gamma/biosynthesis/blood ; Interleukin-18 ; Kupffer Cells/*metabolism ; Lipopolysaccharides/pharmacology ; Mice ; Protein Precursors/metabolism ; Protein Processing, Post-Translational ; Recombinant Proteins/metabolism/pharmacology ; Spleen/cytology/metabolism ; Transfection
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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    Hematopoietic cell regulation by Rac1 and Rac2 guanosine triphosphatases (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2003-10-18
    Beschreibung: The Rho guanosine triphosphatases (GTPases) Rac1 and Rac2 are critical signaling regulators in mammalian cells. The deletion of both Rac1 and Rac2 murine alleles leads to a massive egress of hematopoietic stem/progenitor cells (HSC/Ps) into the blood from the marrow, whereas Rac1-/- but not Rac2-/- HSC/Ps fail to engraft in the bone marrow of irradiated recipient mice. In contrast, Rac2, but not Rac1, regulates superoxide production and directed migration in neutrophils, and in each cell type, the two GTPases play distinct roles in actin organization, cell survival, and proliferation. Thus, Rac1 and Rac2 regulate unique aspects of hematopoietic development and function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gu, Yi -- Filippi, Marie-Dominique -- Cancelas, Jose A -- Siefring, Jamie E -- Williams, Emily P -- Jasti, Aparna C -- Harris, Chad E -- Lee, Andrew W -- Prabhakar, Rethinasamy -- Atkinson, Simon J -- Kwiatkowski, David J -- Williams, David A -- DK62757/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2003 Oct 17;302(5644):445-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Experimental Hematology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14564009" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Actins/metabolism ; Animals ; Apoptosis ; Bone Marrow Transplantation ; Cell Adhesion ; Cell Cycle ; Cell Movement ; Cell Size ; Colony-Forming Units Assay ; Cyclin D1/metabolism ; Fibronectins/metabolism ; Hematopoiesis ; Hematopoietic Stem Cell Mobilization ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/*physiology ; Mice ; Mice, Inbred NOD ; Mice, SCID ; Mitogen-Activated Protein Kinases/metabolism ; Neutrophils/*physiology ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Recombination, Genetic ; Signal Transduction ; Stem Cell Factor/pharmacology ; Superoxides/metabolism ; rac GTP-Binding Proteins/genetics/*metabolism ; rac1 GTP-Binding Protein/genetics/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 10
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    Open-ocean fish reveal an omnidirectional solution to camouflage in polarized environments (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2015-11-21
    Beschreibung: Despite appearing featureless to our eyes, the open ocean is a highly variable environment for polarization-sensitive viewers. Dynamic visual backgrounds coupled with predator encounters from all possible directions make this habitat one of the most challenging for camouflage. We tested open-ocean crypsis in nature by collecting more than 1500 videopolarimetry measurements from live fish from distinct habitats under a variety of viewing conditions. Open-ocean fish species exhibited camouflage that was superior to that of both nearshore fish and mirrorlike surfaces, with significantly higher crypsis at angles associated with predator detection and pursuit. Histological measurements revealed that specific arrangements of reflective guanine platelets in the fish's skin produce angle-dependent polarization modifications for polarocrypsis in the open ocean, suggesting a mechanism for natural selection to shape reflectance properties in this complex environment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brady, Parrish C -- Gilerson, Alexander A -- Kattawar, George W -- Sullivan, James M -- Twardowski, Michael S -- Dierssen, Heidi M -- Gao, Meng -- Travis, Kort -- Etheredge, Robert Ian -- Tonizzo, Alberto -- Ibrahim, Amir -- Carrizo, Carlos -- Gu, Yalong -- Russell, Brandon J -- Mislinski, Kathryn -- Zhao, Shulei -- Cummings, Molly E -- New York, N.Y. -- Science. 2015 Nov 20;350(6263):965-9. doi: 10.1126/science.aad5284. Epub 2015 Nov 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Integrative Biology, University of Texas, Austin, TX 78712, USA. ; Optical Remote Sensing Laboratory, the City College of New York-CUNY, New York, NY 10031, USA. ; Department of Physics and Astronomy and Institute for Quantum Science and Engineering, Texas A&M University, College Station, TX 77843-4242, USA. ; Harbor Branch Oceanographic Institute, Florida Atlantic University, Ft. Pierce, FL 34946, USA. ; Department of Marine Sciences, University of Connecticut Avery Point, 1080 Shennecossett Road, Groton, CT 06340-6048, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26586762" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Mimicry ; Blood Platelets/cytology ; Ecosystem ; Fishes/*physiology ; Oceans and Seas ; Predatory Behavior ; *Selection, Genetic ; Skin/anatomy & histology/blood supply ; Vision, Ocular
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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