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  • Articles  (61)
  • 2000-2004  (61)
  • Computer Science  (61)
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  • Articles  (61)
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  • 1
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    Derepression of BDNF transcription involves calcium-dependent phosphorylation of MeCP2 (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-11-01
    Description: Mutations in MeCP2, which encodes a protein that has been proposed to function as a global transcriptional repressor, are the cause of Rett syndrome (RT T), an X-linked progressive neurological disorder. Although the selective inactivation of MeCP2 in neurons is sufficient to confer a Rett-like phenotype in mice, the specific functions of MeCP2 in postmitotic neurons are not known. We find that MeCP2 binds selectively to BDNF promoter III and functions to repress expression of the BDNF gene. Membrane depolarization triggers the calcium-dependent phosphorylation and release of MeCP2 from BDNF promoter III, thereby facilitating transcription. These studies indicate that MeCP2 plays a key role in the control of neuronal activity-dependent gene regulation and suggest that the deregulation of this process may underlie the pathology of RT T.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Wen G -- Chang, Qiang -- Lin, Yingxi -- Meissner, Alexander -- West, Anne E -- Griffith, Eric C -- Jaenisch, Rudolf -- Greenberg, Michael E -- HD 18655/HD/NICHD NIH HHS/ -- NS28829/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 Oct 31;302(5646):885-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neuroscience, Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14593183" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain-Derived Neurotrophic Factor/*genetics ; Calcium/*metabolism ; Cell Membrane/physiology ; Cells, Cultured ; *Chromosomal Proteins, Non-Histone ; Cloning, Molecular ; CpG Islands ; DNA Methylation ; DNA-Binding Proteins/*metabolism ; Electrophoretic Mobility Shift Assay ; *Gene Expression Regulation ; Gene Silencing ; Histones/metabolism ; Methyl-CpG-Binding Protein 2 ; Methylation ; Mice ; Mice, Knockout ; Neurons/metabolism/physiology ; Phosphorylation ; Potassium Chloride/pharmacology ; Precipitin Tests ; Promoter Regions, Genetic ; Rats ; *Repressor Proteins ; Rett Syndrome/genetics ; *Transcription, Genetic
    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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  • 2
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    Neurobiology. Learning how a fruit fly forgets (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waddell, S -- Quinn, W G -- New York, N.Y. -- Science. 2001 Aug 17;293(5533):1271-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. waddell@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509718" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways/physiology ; Animals ; Brain/physiology ; Cyclic AMP/metabolism ; Drosophila/genetics/*physiology ; *Drosophila Proteins ; Dynamins ; Electroshock ; GTP Phosphohydrolases/genetics/physiology ; Genes, Insect ; Learning/*physiology ; Memory/*physiology ; Mental Recall/physiology ; Models, Neurological ; Neurons/*physiology ; Neuropeptides/genetics/physiology ; Odors ; Presynaptic Terminals/physiology ; Second Messenger Systems ; Signal Transduction ; *Synaptic Transmission ; Temperature ; Transgenes
    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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    The glucocorticoid receptor: rapid exchange with regulatory sites in living cells (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-02-26
    Description: Steroid receptors bind to site-specific response elements in chromatin and modulate gene expression in a hormone-dependent fashion. With the use of a tandem array of mouse mammary tumor virus reporter elements and a form of glucocorticoid receptor labeled with green fluorescent protein, targeting of the receptor to response elements in live mouse cells was observed. Photobleaching experiments provide direct evidence that the hormone-occupied receptor undergoes rapid exchange between chromatin and the nucleoplasmic compartment. Thus, the interaction of regulatory proteins with target sites in chromatin is a more dynamic process than previously believed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McNally, J G -- Muller, W G -- Walker, D -- Wolford, R -- Hager, G L -- New York, N.Y. -- Science. 2000 Feb 18;287(5456):1262-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Receptor Biology and Gene Expression, Building 41, Room B602, National Cancer Institute, Bethesda, MD 20892-5055, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10678832" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Cell Line, Transformed ; Cell Nucleus/metabolism ; Chromatin/*metabolism ; Dexamethasone/metabolism/*pharmacology ; Green Fluorescent Proteins ; In Situ Hybridization, Fluorescence ; Ligands ; Luminescent Proteins ; Mammary Tumor Virus, Mouse/genetics ; Mice ; Microscopy, Confocal ; Microscopy, Fluorescence ; Nucleosomes/metabolism ; Receptors, Glucocorticoid/*metabolism ; *Response Elements ; *Terminal Repeat Sequences
    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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    The kondo effect in the unitary limit (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-23
    Description: We observe a strong Kondo effect in a semiconductor quantum dot when a small magnetic field is applied. The Coulomb blockade for electron tunneling is overcome completely by the Kondo effect, and the conductance reaches the unitary limit value. We compare the experimental Kondo temperature with the theoretical predictions for the spin- 12 Anderson impurity model. Excellent agreement is found throughout the Kondo regime. Phase coherence is preserved when a Kondo quantum dot is included in one of the arms of an Aharonov-Bohm ring structure, and the phase behavior differs from previous results on a non-Kondo dot.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van der Wiel WG -- De Franceschi S -- Fujisawa -- Elzerman -- Tarucha -- Kouwenhoven -- New York, N.Y. -- Science. 2000 Sep 22;289(5487):2105-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Applied Physics, Delft Institute for Microelectronics and Submicrontechnology, and ERATO Mesoscopic Correlation Project, Delft University of Technology, Post Office Box 5046, 2600 GA Delft, Netherlands. NTT Basic Research Laboratories〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11000108" target="_blank"〉PubMed〈/a〉
    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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  • 5
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    Positioning of longitudinal nerves in C. elegans by nidogen (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-07
    Description: Basement membranes can help determine pathways of migrating axons. Although members of the nidogen (entactin) protein family are structural components of basement membranes, we find that nidogen is not required for basement membrane assembly in the nematode Caenorhabditis elegans. Nidogen is localized to body wall basement membranes and is required to direct longitudinal nerves dorsoventrally and to direct axons at the midlines. By examining migration of a single axon in vivo, we show that nidogen is required for the axon to switch from circumferential to longitudinal migration. Specialized basement membranes may thus regulate nerve position.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, S -- Wadsworth, W G -- New York, N.Y. -- Science. 2000 Apr 7;288(5463):150-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Robert Wood Johnson Medical School, Piscataway, NJ 08854-5635, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10753123" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; Animals, Genetically Modified ; Axons/*physiology ; Basement Membrane/*physiology ; Body Patterning ; Caenorhabditis elegans/anatomy & histology/embryology/genetics/*growth & ; development ; *Caenorhabditis elegans Proteins ; Cell Adhesion Molecules/genetics/physiology ; Cell Movement ; Cloning, Molecular ; Gene Expression ; Genes, Helminth ; In Situ Hybridization ; Intestines/cytology/metabolism ; Membrane Glycoproteins/analysis/chemistry/genetics/*physiology ; Motor Neurons/physiology/ultrastructure ; Muscles/metabolism ; Nervous System/anatomy & histology/embryology/growth & development/ultrastructure ; Neurons/metabolism ; Phenotype ; Protein Structure, Tertiary ; Receptors, Cell Surface/genetics/physiology ; Signal Transduction
    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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  • 6
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    HIFalpha targeted for VHL-mediated destruction by proline hydroxylation: implications for O2 sensing (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-09
    Description: HIF (hypoxia-inducible factor) is a transcription factor that plays a pivotal role in cellular adaptation to changes in oxygen availability. In the presence of oxygen, HIF is targeted for destruction by an E3 ubiquitin ligase containing the von Hippel-Lindau tumor suppressor protein (pVHL). We found that human pVHL binds to a short HIF-derived peptide when a conserved proline residue at the core of this peptide is hydroxylated. Because proline hydroxylation requires molecular oxygen and Fe(2+), this protein modification may play a key role in mammalian oxygen sensing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ivan, M -- Kondo, K -- Yang, H -- Kim, W -- Valiando, J -- Ohh, M -- Salic, A -- Asara, J M -- Lane, W S -- Kaelin , W G Jr -- New York, N.Y. -- Science. 2001 Apr 20;292(5516):464-8. Epub 2001 Apr 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute and Brigham and Women's Hospital, Howard Hughes Medical Institute, Harvard Medical School, 44 Binney Street, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11292862" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Cell Hypoxia ; Cell Line ; Cobalt/pharmacology ; Deferoxamine/pharmacology ; Humans ; Hydroxylation ; Hydroxyproline/*metabolism ; *Ligases ; Mass Spectrometry ; Mice ; Molecular Sequence Data ; Oxygen/*physiology ; Protein Structure, Tertiary ; Proteins/*metabolism ; Recombinant Fusion Proteins/metabolism ; Trans-Activators/chemistry/genetics/*metabolism ; Transcription Factors/*metabolism ; Tumor Cells, Cultured ; *Tumor Suppressor Proteins ; *Ubiquitin-Protein Ligases ; Ubiquitins/metabolism ; Von Hippel-Lindau Tumor Suppressor Protein
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Parasitology. Drugs to combat tropical protozoan parasites (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gelb, Michael H -- Hol, Wim G J -- New York, N.Y. -- Science. 2002 Jul 19;297(5580):343-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Chemistry, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12130767" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antimalarials/chemistry/pharmacology/therapeutic use ; *Antiprotozoal Agents/chemistry/pharmacology/therapeutic use ; Chagas Disease/drug therapy/parasitology ; Chemistry, Pharmaceutical ; Combinatorial Chemistry Techniques ; Computational Biology ; Databases, Factual ; Drug Design ; Drug Resistance ; Genomics ; Humans ; Leishmania/drug effects/genetics/metabolism ; Leishmaniasis/drug therapy/parasitology ; Malaria/drug therapy/parasitology ; Plasmodium falciparum/drug effects/genetics/metabolism ; Plasmodium vivax/drug effects/genetics ; *Trypanocidal Agents/chemistry/pharmacology/therapeutic use ; Trypanosoma brucei brucei/drug effects/genetics/metabolism ; Trypanosoma cruzi/drug effects/genetics/metabolism ; Trypanosomiasis, African/drug therapy/parasitology
    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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    Determination of the equation of state of dense matter (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-11-02
    Description: Nuclear collisions can compress nuclear matter to densities achieved within neutron stars and within core-collapse supernovae. These dense states of matter exist momentarily before expanding. We analyzed the flow of matter to extract pressures in excess of 10(34) pascals, the highest recorded under laboratory-controlled conditions. Using these analyses, we rule out strongly repulsive nuclear equations of state from relativistic mean field theory and weakly repulsive equations of state with phase transitions at densities less than three times that of stable nuclei, but not equations of state softened at higher densities because of a transformation to quark matter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Danielewicz, Pawel -- Lacey, Roy -- Lynch, William G -- New York, N.Y. -- Science. 2002 Nov 22;298(5598):1592-6. Epub 2002 Oct 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824-1321, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12411575" target="_blank"〉PubMed〈/a〉
    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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    Location of a major susceptibility locus for familial schizophrenia on chromosome 1q21-q22 (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-04-28
    Description: Schizophrenia is a complex disorder, and there is substantial evidence supporting a genetic etiology. Despite this, prior attempts to localize susceptibility loci have produced predominantly suggestive findings. A genome-wide scan for schizophrenia susceptibility loci in 22 extended families with high rates of schizophrenia provided highly significant evidence of linkage to chromosome 1 (1q21-q22), with a maximum heterogeneity logarithm of the likelihood of linkage (lod) score of 6.50. This linkage result should provide sufficient power to allow the positional cloning of the underlying susceptibility gene.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3787922/" 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/PMC3787922/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brzustowicz, L M -- Hodgkinson, K A -- Chow, E W -- Honer, W G -- Bassett, A S -- 53216/Canadian Institutes of Health Research/Canada -- K08 MH01392/MH/NIMH NIH HHS/ -- N01-HG-65403/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2000 Apr 28;288(5466):678-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102, USA. brzustowicz@axon.rutgers.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10784452" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; Chromosomes, Human, Pair 1/*genetics ; Computer Simulation ; Female ; Genes, Dominant ; Genes, Recessive ; Genetic Heterogeneity ; Genetic Linkage ; Genetic Markers ; *Genetic Predisposition to Disease ; Humans ; Likelihood Functions ; Lod Score ; Male ; Models, Genetic ; Pedigree ; Schizophrenia/*genetics
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Influence of SHIP on the NK repertoire and allogeneic bone marrow transplantation (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-16
    Description: Natural killer cell (NK) receptors for major histocompatibility complex (MHC) class I influence engraftment and graft-versus-tumor effects after allogeneic bone marrow transplantation. We find that SH2-containing inositol phosphatase (SHIP) influences the repertoire of NK receptors. In adult SHIP-/- mice, the NK compartment is dominated by cells that express two inhibitory receptors capable of binding either self or allogeneic MHC ligands. This promiscuous repertoire has significant functional consequences, because SHIP-/- mice fail to reject fully mismatched allogeneic marrow grafts and show enhanced survival after such transplants. Thus, SHIP plays an important role in two processes that limit the success of allogeneic marrow transplantation: graft rejection and graft-versus-host disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Jia-Wang -- Howson, Julie M -- Ghansah, Tomar -- Desponts, Caroline -- Ninos, John M -- May, Sarah L -- Nguyen, Kim H T -- Toyama-Sorimachi, Noriko -- Kerr, William G -- P01 NS27405/NS/NINDS NIH HHS/ -- R01 DK54767/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 15;295(5562):2094-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunology Program, H. Lee Moffitt Comprehensive Cancer Center and Research Institute, University of South Florida, Tampa, FL 33612, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11896280" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/metabolism ; *Antigens, Ly ; Bone Marrow Transplantation/*immunology ; Cell Survival ; Graft Rejection/*immunology ; Graft Survival ; Graft vs Host Disease/*immunology ; H-2 Antigens/immunology/metabolism ; Haplotypes ; Histocompatibility Antigens Class I/immunology/metabolism ; Killer Cells, Natural/enzymology/*immunology/metabolism ; *Lectins, C-Type ; Ligands ; Lymphocyte Count ; Lymphocyte Subsets/immunology/metabolism ; Membrane Glycoproteins/metabolism ; Mice ; Mice, Inbred A ; Mice, Inbred BALB C ; NK Cell Lectin-Like Receptor Subfamily D ; Phosphatidylinositol 3-Kinases/metabolism ; Phosphoric Monoester Hydrolases/chemistry/genetics/*metabolism ; Phosphorylation ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Receptors, Immunologic/metabolism ; Receptors, NK Cell Lectin-Like ; Signal Transduction ; Transplantation, Homologous ; src Homology Domains
    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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