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  • Articles  (214)
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  • Mice  (214)
  • 2005-2009
  • 2000-2004  (214)
  • 1955-1959
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  • 2001  (214)
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  • Articles  (214)
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  • 2005-2009
  • 2000-2004  (214)
  • 1955-1959
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  • 1
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    Neuroscience. An antibiotic to treat Alzheimer's? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: An antibiotic once used to treat traveler's diarrhea might battle Alzheimer's disease as well, researchers announced here last week at the Society for Neuroscience's annual meeting. The drug dissolves Alzheimer's-like plaques in mouse brains, apparently by trapping the copper and zinc that stud these deposits. A clinical trial to test whether the drug helps people with Alzheimer's is already under way.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, L -- New York, N.Y. -- Science. 2000 Nov 17;290(5495):1273-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11185394" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*drug therapy/metabolism/pathology ; Amyloid beta-Peptides/*metabolism ; Animals ; Brain/drug effects/metabolism/pathology ; Clinical Trials, Phase II as Topic ; Clioquinol/metabolism/pharmacology/*therapeutic use ; Copper/metabolism/pharmacology ; Humans ; Mice ; Plaque, Amyloid/*drug effects/metabolism ; Zinc/metabolism/pharmacology
    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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    Genomics and gene therapy. Artificial chromosomes coming to life (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: One of the biggest obstacles to gene therapy is the delivery of the therapeutic gene to the target tissue so that it is appropriately expressed. In his Perspective, Willard looks at the potential advantages of using a human artificial chromosome to maintain expression of a therapeutic gene and discusses some of the hurdles yet to be overcome before this gene delivery system can be tried out in the clinic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Willard, H F -- New York, N.Y. -- Science. 2000 Nov 17;290(5495):1308-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Center for Human Genetics at Case Western Reserve University and the Research Institute of Universi Hospitals of Cleveland, Cleveland, OH 44106, USA. hfw@po.CWRU.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11185406" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Centromere/chemistry/genetics/physiology ; *Chromosomes, Artificial, Human/genetics/physiology/ultrastructure ; Chromosomes, Artificial, Mammalian ; DNA, Satellite/genetics ; Gene Expression ; Gene Transfer Techniques ; *Genetic Therapy ; Genetic Vectors ; Humans ; Mice
    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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    Neurobiology. A stargazer foretells the way to the synapse (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: How do AMPA receptors that are made in the cytoplasm of excitatory neurons travel to and become localized in the distant postsynaptic membranes of dendrites? Nakagawa and Sheng, in a Perspective, suggest that the answer may lie in the stargazin protein that has now been found to interact with AMPA receptors, guiding them to the postsynaptic membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nakagawa, T -- Sheng, M -- New York, N.Y. -- Science. 2000 Dec 22;290(5500):2270-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11188726" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium Channels/chemistry/genetics/*metabolism ; Cell Membrane/metabolism ; Cerebellum/cytology/*metabolism ; Dendrites/metabolism ; Mice ; Mice, Mutant Strains ; Models, Biological ; Nerve Tissue Proteins/metabolism ; Neurons/*metabolism ; Protein Binding ; Protein Transport ; Receptors, AMPA/*metabolism ; Synapses/metabolism ; Synaptic Membranes/*metabolism ; Synaptic Transmission
    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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    Development. Survival is impossible without an editor (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: RNA editing is a fascinating phenomenon that is found in both animal and plant cells. By converting an adenosine base to an inosine (which behaves like guanosine) in RNA that has already been transcribed, certain RNA sequences (and hence the amino acids they encode) are altered. In a Perspective, Keegan, Gallo and O'Connell explore new results showing that activity of the editing enzyme ADAR1 is crucial for normal development of red blood cells in mouse embryos.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keegan, L P -- Gallo, A -- O'Connell, M A -- New York, N.Y. -- Science. 2000 Dec 1;290(5497):1707-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Human Genetics Unit, Western General Hospital, Edinburgh EH4 2XU, UK. liam.keegan@hgu.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11186391" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/metabolism ; Adenosine Deaminase/chemistry/*genetics/*metabolism ; Animals ; Base Pairing ; Central Nervous System/metabolism ; Chimera ; Drosophila/genetics/metabolism ; Embryo, Mammalian/cytology ; Embryo, Nonmammalian ; *Erythropoiesis ; Gene Dosage ; Hematopoietic Stem Cells/cytology/enzymology ; Inosine/metabolism ; Liver/metabolism ; Mice ; Mutation ; Phenotype ; Protein Structure, Tertiary ; *RNA Editing ; RNA Precursors/metabolism ; RNA, Double-Stranded/metabolism ; RNA-Binding Proteins ; Receptors, AMPA/genetics ; Stem Cells/cytology/enzymology ; Teratoma/genetics/pathology
    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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    Translational roots for mental retardation? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: A flurry of findings points to protein translation in the dendrites of neurons as a key feature leading to the changes at synapses that are vital to learning (see main text). And one recent discovery suggests that when this translation goes awry, it can lead to mental retardation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2000 Oct 27;290(5492):737.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11184206" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dendrites/*metabolism ; Fragile X Mental Retardation Protein ; Fragile X Syndrome/etiology/genetics/metabolism ; Humans ; Intellectual Disability/*etiology/genetics/metabolism ; Mice ; Mutation ; Nerve Tissue Proteins/*genetics/metabolism ; *Protein Biosynthesis ; *RNA-Binding Proteins ; Synapses/*physiology
    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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    Research misconduct. Texas scientist admits falsifying results (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: A University of Texas (UT) immunologist has admitted to federal officials that he falsified research results over at least a 5-year period, leaving a trail of retracted papers and disgruntled collaborators. The scientist, who resigned and has been barred from receiving federal research grants, was found to have repeatedly duped colleagues by spiking test tubes with doses of a radioactive marker that produced positive results, according to detailed reports by UT and federal investigators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malakoff, D -- New York, N.Y. -- Science. 2000 Oct 13;290(5490):245-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11183367" target="_blank"〉PubMed〈/a〉
    Keywords: *Allergy and Immunology ; Animals ; HLA-B27 Antigen/genetics ; Mice ; Research/*standards ; *Scientific Misconduct ; Texas ; United States ; United States Office of Research Integrity ; Universities
    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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  • 7
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    Laboratory animals. Researchers fight plan to regulate mice, birds (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malakoff, D -- New York, N.Y. -- Science. 2000 Oct 6;290(5489):23.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11183138" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Testing Alternatives/*legislation & jurisprudence ; Animal Welfare/*legislation & jurisprudence ; Animals ; *Animals, Laboratory ; Birds ; Mice ; Rats ; United States ; United States Department of Agriculture/*legislation & jurisprudence
    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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    Circadian rhythms. A time to rest: clock signal identified (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2453.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11752547" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Clocks/physiology ; Circadian Rhythm/drug effects/*physiology ; Cricetinae ; Darkness ; Hypothalamus/*metabolism ; Light ; Mice ; *Motor Activity/drug effects ; Mutation ; Neurons/*metabolism ; Receptor, Epidermal Growth Factor/genetics/*metabolism ; Retinal Ganglion Cells/metabolism ; Signal Transduction ; Suprachiasmatic Nucleus/*metabolism ; Transforming Growth Factor alpha/*metabolism/pharmacology
    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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    Olfaction. Smell's course is predetermined (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barinaga, M -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1269-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701909" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain Mapping ; Drosophila ; Mice ; Neurons/*physiology ; Odors ; Olfactory Bulb/metabolism ; Olfactory Pathways/cytology/*physiology ; Olfactory Receptor Neurons/metabolism/*physiology ; Receptors, Odorant/genetics/metabolism ; Smell/*physiology
    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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  • 10
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    Publication rights for sequence data producers (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, E -- New York, N.Y. -- Science. 2000 Dec 1;290(5497):1696-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11186390" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Base Sequence ; Databases, Factual ; *Genome ; Guidelines as Topic ; Humans ; Major Histocompatibility Complex/*genetics ; Mice ; Peer Review, Research ; *Publishing
    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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  • 11
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    Identification of critical staphylococcal genes using conditional phenotypes generated by antisense RNA (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-22
    Description: Comprehensive genomic analysis of the important human pathogen Staphylococcus aureus was achieved by a strategy involving antisense technology in a regulatable gene expression system. In addition to known essential genes, many genes of unknown or poorly defined biological function were identified. This methodology allowed gene function to be characterized in a comprehensive, defined set of conditionally growth-defective/lethal isogenic strains. Quantitative titration of the conditional growth effect was performed either in bacterial culture or in an animal model of infection. This genomic strategy offers an approach to the identification of staphylococcal gene products that could serve as targets for antibiotic discovery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ji, Y -- Zhang, B -- Van, S F -- Horn -- Warren, P -- Woodnutt, G -- Burnham, M K -- Rosenberg, M -- New York, N.Y. -- Science. 2001 Sep 21;293(5538):2266-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Genetics Research, GlaxoSmithKline Pharmaceuticals Research and Development, Collegeville, PA 19426, USA. yinduo_ji-1@gsk.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11567142" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cloning, Molecular ; Female ; *Gene Expression Regulation, Bacterial ; *Genes, Bacterial ; *Genes, Essential ; Genetic Vectors ; Mice ; Open Reading Frames ; Phenotype ; Pyelonephritis/microbiology ; *RNA, Antisense ; Staphylococcal Infections/microbiology ; Staphylococcus aureus/*genetics/growth & development/pathogenicity ; Transformation, Bacterial ; Virulence/genetics
    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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  • 12
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    Neurobiology. Cholesterol--making or breaking the synapse (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barres, B A -- Smith, S J -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1296-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Stanford University School of Medicine, Fairchild Science Building, Stanford, CA 94305-5125, USA. barres@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701918" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apolipoproteins E/metabolism/pharmacology ; Astrocytes/*metabolism ; Brain/metabolism ; Cells, Cultured ; Cholesterol/*metabolism/pharmacology ; Coculture Techniques ; Mice ; Neuroglia/metabolism ; Neuronal Plasticity ; Neurons/metabolism/*physiology ; Recombinant Proteins/pharmacology ; Signal Transduction ; Synapses/*physiology
    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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  • 13
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    SNARE function analyzed in synaptobrevin/VAMP knockout mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-03
    Description: SNAREs (soluble NSF-attachment protein receptors) are generally acknowledged as central components of membrane fusion reactions, but their precise function has remained enigmatic. Competing hypotheses suggest roles for SNAREs in mediating the specificity of fusion, catalyzing fusion, or actually executing fusion. We generated knockout mice lacking synaptobrevin/VAMP 2, the vesicular SNARE protein responsible for synaptic vesicle fusion in forebrain synapses, to make use of the exquisite temporal resolution of electrophysiology in measuring fusion. In the absence of synaptobrevin 2, spontaneous synaptic vesicle fusion and fusion induced by hypertonic sucrose were decreased approximately 10-fold, but fast Ca2+-triggered fusion was decreased more than 100-fold. Thus, synaptobrevin 2 may function in catalyzing fusion reactions and stabilizing fusion intermediates but is not absolutely required for synaptic fusion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schoch, S -- Deak, F -- Konigstorfer, A -- Mozhayeva, M -- Sara, Y -- Sudhof, T C -- Kavalali, E T -- New York, N.Y. -- Science. 2001 Nov 2;294(5544):1117-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Basic Neuroscience, Department of Molecular Genetics, Howard Hughes Medical Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11691998" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Calcium/metabolism/pharmacology ; Cells, Cultured ; Hypertonic Solutions ; *Membrane Fusion ; Membrane Proteins/genetics/*physiology ; Mice ; Mice, Knockout ; Mutation ; Patch-Clamp Techniques ; Potassium/pharmacology ; Presynaptic Terminals/physiology ; Prosencephalon/physiology ; R-SNARE Proteins ; SNARE Proteins ; Sucrose/pharmacology ; Synapses/*physiology ; Synaptic Transmission ; Synaptic Vesicles/*physiology ; *Vesicular Transport Proteins
    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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  • 14
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    Endothelial apoptosis as the primary lesion initiating intestinal radiation damage in mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-14
    Description: Gastrointestinal (GI) tract damage by chemotherapy or radiation limits their efficacy in cancer treatment. Radiation has been postulated to target epithelial stem cells within the crypts of Lieberkuhn to initiate the lethal GI syndrome. Here, we show in mouse models that microvascular endothelial apoptosis is the primary lesion leading to stem cell dysfunction. Radiation-induced crypt damage, organ failure, and death from the GI syndrome were prevented when endothelial apoptosis was inhibited pharmacologically by intravenous basic fibroblast growth factor (bFGF) or genetically by deletion of the acid sphingomyelinase gene. Endothelial, but not crypt, cells express FGF receptor transcripts, suggesting that the endothelial lesion occurs before crypt stem cell damage in the evolution of the GI syndrome. This study provides a basis for new approaches to prevent radiation damage to the bowel.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paris, F -- Fuks, Z -- Kang, A -- Capodieci, P -- Juan, G -- Ehleiter, D -- Haimovitz-Friedman, A -- Cordon-Cardo, C -- Kolesnick, R -- CA52462/CA/NCI NIH HHS/ -- CA85704/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 13;293(5528):293-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Signal Transduction and, Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11452123" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Annexin A5/metabolism ; *Apoptosis/drug effects/radiation effects ; Bone Marrow/radiation effects ; Bone Marrow Transplantation ; Capillaries ; Endothelium, Vascular/drug effects/pathology/*radiation effects ; Fibroblast Growth Factors/pharmacology ; Humans ; In Situ Nick-End Labeling ; Intestinal Mucosa/blood supply/cytology/pathology/*radiation effects ; Intestines/blood supply/pathology/*radiation effects ; Mice ; Mice, Inbred C57BL ; Neoplasms/pathology/radiotherapy ; Receptors, Fibroblast Growth Factor/metabolism ; Sphingomyelin Phosphodiesterase/deficiency/genetics/metabolism ; Stem Cells/radiation effects ; Tumor Suppressor Protein p53/deficiency/metabolism ; Whole-Body Irradiation
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 15
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    Regulation of differentiation to the infective stage of the protozoan parasite Leishmania major by tetrahydrobiopterin (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-17
    Description: A critical step in the infectious cycle of Leishmania is the differentiation of parasites within the sand fly vector to the highly infective metacyclic promastigote stage. Here, we establish tetrahydrobiopterin (H4B) levels as an important factor controlling the extent of metacyclogenesis. H4B levels decline substantially during normal development, and genetic or nutritional manipulations showed that low H4B caused elevated metacyclogenesis. Mutants lacking pteridine reductase 1 (PTR1) had low levels of H4B, remained infectious to mice, and induced larger cutaneous lesions (hypervirulence). Thus, the control of pteridine metabolism has relevance to the mechanism of Leishmania differentiation and the limitation of virulence during evolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cunningham, M L -- Titus, R G -- Turco, S J -- Beverley, S M -- AI21903/AI/NIAID NIH HHS/ -- AI31078/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Apr 13;292(5515):285-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11303103" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biopterin/*analogs & derivatives/*metabolism/pharmacology ; Carrier Proteins/genetics/metabolism ; Chromatography, High Pressure Liquid ; Folic Acid/metabolism ; Genes, Protozoan ; Glycosphingolipids/analysis ; Leishmania major/genetics/*growth & development/*metabolism/pathogenicity ; Leishmaniasis, Cutaneous/*parasitology ; *Membrane Transport Proteins ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Mutation ; Oxidoreductases/genetics/metabolism ; *Protozoan Proteins ; Signal Transduction ; Virulence
    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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  • 16
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    Taking cell-matrix adhesions to the third dimension (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: Adhesions between fibroblastic cells and extracellular matrix have been studied extensively in vitro, but little is known about their in vivo counterparts. Here, we characterized the composition and function of adhesions in three-dimensional (3D) matrices derived from tissues or cell culture. "3D-matrix adhesions" differ from focal and fibrillar adhesions characterized on 2D substrates in their content of alpha5beta1 and alphavbeta3 integrins, paxillin, other cytoskeletal components, and tyrosine phosphorylation of focal adhesion kinase (FAK). Relative to 2D substrates, 3D-matrix interactions also display enhanced cell biological activities and narrowed integrin usage. These distinctive in vivo 3D-matrix adhesions differ in structure, localization, and function from classically described in vitro adhesions, and as such they may be more biologically relevant to living organisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cukierman, E -- Pankov, R -- Stevens, D R -- Yamada, K M -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1708-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Craniofacial Developmental Biology and Regeneration Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721053" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; *Cell Adhesion/drug effects ; Cell Culture Techniques/methods ; Cell Division ; Cell Movement ; Cell Size ; Cells, Cultured ; Culture Techniques/methods ; Cycloheximide/pharmacology ; Cytoskeletal Proteins/metabolism ; Extracellular Matrix/chemistry/metabolism ; Fibroblasts/chemistry/*cytology/*metabolism ; Fibronectins/metabolism ; Fluorescent Antibody Technique, Indirect ; Focal Adhesion Kinase 1 ; Focal Adhesion Protein-Tyrosine Kinases ; Focal Adhesions/chemistry/metabolism ; Glutaral/metabolism ; Humans ; Imaging, Three-Dimensional/*methods ; Integrins/metabolism ; Mice ; Mitogen-Activated Protein Kinases/metabolism ; Molecular Conformation ; Phosphorylation ; Protein-Tyrosine Kinases/metabolism ; Time Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Clioquinol's return: cautions from Japan (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tabira, T -- New York, N.Y. -- Science. 2001 Jun 22;292(5525):2251-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11424945" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*drug therapy ; Animals ; Clinical Trials, Phase II as Topic ; Clioquinol/*adverse effects/*therapeutic use ; Humans ; Japan ; Mice ; Myelitis/*chemically induced/etiology ; Optic Neuritis/*chemically induced/etiology ; Syndrome ; Vitamin B 12/administration & dosage ; Vitamin B 12 Deficiency/complications
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Cancer. A CINtillating new job for the APC tumor suppressor (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pellman, D -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2555-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Pediatric Hematology/Oncology, Children's Hospital, Harvard Medical School, 44 Binney Street, Boston, MA 02115, USA. david_pellman@dfci.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11286276" target="_blank"〉PubMed〈/a〉
    Keywords: Adenomatous Polyposis Coli Protein ; Aneuploidy ; Animals ; Cell Transformation, Neoplastic ; Cells, Cultured ; Chromosome Aberrations ; Chromosome Segregation ; Chromosomes/*physiology ; Colonic Neoplasms/*genetics/metabolism/pathology ; Cytoskeletal Proteins/chemistry/*metabolism ; *Genes, APC ; Humans ; Kinetochores/*metabolism ; Mice ; Microtubule-Associated Proteins/metabolism ; Microtubules/*metabolism ; Mitosis ; Mutation ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases ; Spindle Apparatus/metabolism ; Stem Cells/cytology/metabolism ; *Trans-Activators ; beta Catenin
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 19
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    Predictability of the UK variant Creutzfeldt-Jakob disease epidemic (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-27
    Description: Back-calculation analysis of the variant Creutzfeldt-Jakob disease epidemic in the United Kingdom is used to estimate the number of infected individuals and future disease incidence. The model assumes a hazard of infection proportional to the incidence of bovine spongiform encephalopathy in the United Kingdom and accounts for precautionary control measures and very wide ranges of incubation periods. The model indicates that current case data are compatible with numbers of infections ranging from a few hundred to several millions. In the latter case, the model suggests that the mean incubation period must be well beyond the human life-span, resulting in disease epidemics of at most several thousand cases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉d'Aignaux, J N -- Cousens, S N -- Smith, P G -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1729-31. Epub 2001 Oct 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉London School of Hygiene and Tropical Medicine, Infectious Disease Epidemiology Unit, Keppel Street, London WC1E 7HT, UK. jerome.huillard@lshtm.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11679631" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Age Distribution ; Age Factors ; Age of Onset ; Animals ; Cattle ; Child ; Child, Preschool ; Creutzfeldt-Jakob Syndrome/*epidemiology/genetics/transmission ; Diet ; Disease Susceptibility ; Encephalopathy, Bovine Spongiform/epidemiology ; Genetic Variation/*genetics ; Genotype ; Great Britain/epidemiology ; Humans ; Incidence ; Infant ; Likelihood Functions ; Methionine/genetics ; Mice ; Models, Biological ; Prevalence ; Prions/administration & dosage/genetics
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    Requirement of Math1 for secretory cell lineage commitment in the mouse intestine (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-12
    Description: The mouse small intestinal epithelium consists of four principal cell types deriving from one multipotent stem cell: enterocytes, goblet, enteroendocrine, and Paneth cells. Previous studies showed that Math1, a basic helix-loop-helix (bHLH) transcription factor, is expressed in the gut. We find that loss of Math1 leads to depletion of goblet, enteroendocrine, and Paneth cells without affecting enterocytes. Colocalization of Math1 with Ki-67 in some proliferating cells suggests that secretory cells (goblet, enteroendocrine, and Paneth cells) arise from a common progenitor that expresses Math1, whereas absorptive cells (enterocytes) arise from a progenitor that is Math1-independent. The continuous rapid renewal of these cells makes the intestinal epithelium a model system for the study of stem cell regeneration and lineage commitment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Q -- Bermingham, N A -- Finegold, M J -- Zoghbi, H Y -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2155-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11739954" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; *Cell Differentiation ; Cell Division ; Cell Lineage ; Enterocytes/cytology ; Enteroendocrine Cells/cytology ; Gene Expression ; Goblet Cells/cytology ; Helix-Loop-Helix Motifs ; Heterozygote ; Homeodomain Proteins/metabolism ; Intestinal Mucosa/*cytology/embryology/*metabolism ; Intestine, Large/cytology/embryology ; Intestine, Small/cytology/embryology ; Ki-67 Antigen/analysis ; Membrane Proteins/metabolism ; Mice ; Paneth Cells/cytology/metabolism ; Protein Precursors/analysis ; Receptors, Notch ; Signal Transduction ; Stem Cells/*cytology ; Transcription Factors/*genetics/*metabolism
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    An apolipoprotein influencing triglycerides in humans and mice revealed by comparative sequencing (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-06
    Description: Comparison of genomic DNA sequences from human and mouse revealed a new apolipoprotein (APO) gene (APOAV) located proximal to the well-characterized APOAI/CIII/AIV gene cluster on human 11q23. Mice expressing a human APOAV transgene showed a decrease in plasma triglyceride concentrations to one-third of those in control mice; conversely, knockout mice lacking Apoav had four times as much plasma triglycerides as controls. In humans, single nucleotide polymorphisms (SNPs) across the APOAV locus were found to be significantly associated with plasma triglyceride levels in two independent studies. These findings indicate that APOAV is an important determinant of plasma triglyceride levels, a major risk factor for coronary artery disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennacchio, L A -- Olivier, M -- Hubacek, J A -- Cohen, J C -- Cox, D R -- Fruchart, J C -- Krauss, R M -- Rubin, E M -- HL-18574/HL/NHLBI NIH HHS/ -- HL-53917/HL/NHLBI NIH HHS/ -- HL66681/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 5;294(5540):169-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genome Sciences Department, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11588264" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Alleles ; Animals ; Apolipoprotein C-III ; Apolipoproteins/*genetics/*physiology ; Apolipoproteins A ; Apolipoproteins C/blood ; Chromosomes, Human, Pair 11 ; Cohort Studies ; Computational Biology ; Coronary Disease/etiology/genetics ; Expressed Sequence Tags ; Female ; Haplotypes ; Humans ; Linkage Disequilibrium ; Lipoproteins, VLDL/blood ; Male ; Mice ; Mice, Knockout ; Mice, Transgenic ; Multigene Family ; Open Reading Frames ; Polymorphism, Single Nucleotide ; Risk Factors ; Sequence Analysis, DNA ; Transgenes ; Triglycerides/*blood
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Defective lymphotoxin-beta receptor-induced NF-kappaB transcriptional activity in NIK-deficient mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-17
    Description: The role of NF-kappaB-inducing kinase (NIK) in cytokine signaling remains controversial. To identify the physiologic functions of NIK, we disrupted the NIK locus by gene targeting. Although NIK-/- mice displayed abnormalities in both lymphoid tissue development and antibody responses, NIK-/- cells manifested normal NF-kappaB DNA binding activity when treated with a variety of cytokines, including tumor necrosis factor (TNF), interleukin-1 (IL-1), and lymphotoxin-beta (LTbeta). However, NIK was selectively required for gene transcription induced through ligation of LTbeta receptor but not TNF receptors. These results reveal that NIK regulates the transcriptional activity of NF-kappaB in a receptor-restricted manner.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yin, L -- Wu, L -- Wesche, H -- Arthur, C D -- White, J M -- Goeddel, D V -- Schreiber, R D -- New York, N.Y. -- Science. 2001 Mar 16;291(5511):2162-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Immunology, Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11251123" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; B-Lymphocytes/metabolism ; Cells, Cultured ; DNA/metabolism ; Fibroblasts/metabolism ; Gene Targeting ; Genes, Reporter ; Interleukin-1/metabolism/pharmacology ; Ligands ; Lymphoid Tissue/abnormalities ; Lymphotoxin beta Receptor ; Mice ; Mice, Inbred C57BL ; NF-kappa B/genetics/*metabolism ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Receptors, Tumor Necrosis Factor/immunology/*metabolism ; Signal Transduction ; *Transcription, Genetic ; Tumor Necrosis Factor-alpha/metabolism/pharmacology
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    Vascular abnormalities and deregulation of VEGF in Lkb1-deficient mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-18
    Description: The LKB1 tumor suppressor gene, mutated in Peutz-Jeghers syndrome, encodes a serine/threonine kinase of unknown function. Here we show that mice with a targeted disruption of Lkb1 die at midgestation, with the embryos showing neural tube defects, mesenchymal cell death, and vascular abnormalities. Extraembryonic development was also severely affected; the mutant placentas exhibited defective labyrinth layer development and the fetal vessels failed to invade the placenta. These phenotypes were associated with tissue-specific deregulation of vascular endothelial growth factor (VEGF) expression, including a marked increase in the amount of VEGF messenger RNA. Moreover, VEGF production in cultured Lkb1(-/-) fibroblasts was elevated in both normoxic and hypoxic conditions. These findings place Lkb1 in the VEGF signaling pathway and suggest that the vascular defects accompanying Lkb1 loss are mediated at least in part by VEGF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ylikorkala, A -- Rossi, D J -- Korsisaari, N -- Luukko, K -- Alitalo, K -- Henkemeyer, M -- Makela, T P -- New York, N.Y. -- Science. 2001 Aug 17;293(5533):1323-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular and Cancer Biology Program, Haartman Institute and Biomedicum Helsinki, Post Office Box 63, University of Helsinki, Helsinki 00014, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509733" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Vessels/*abnormalities/embryology ; Cell Death ; Cell Hypoxia ; Cells, Cultured ; DNA-Binding Proteins/metabolism ; Embryo, Mammalian/*metabolism ; Embryonic and Fetal Development ; Endothelial Growth Factors/*genetics/*metabolism ; Endothelium, Vascular/abnormalities/cytology/embryology ; *Gene Expression Regulation, Developmental ; Gene Targeting ; Hypoxia-Inducible Factor 1 ; Hypoxia-Inducible Factor 1, alpha Subunit ; In Situ Hybridization ; Lymphokines/*genetics/*metabolism ; Mesoderm/cytology ; Mice ; Mice, Inbred C57BL ; Muscle, Smooth, Vascular/abnormalities/cytology/embryology ; Neural Tube Defects/embryology ; Nuclear Proteins/metabolism ; Phenotype ; Placenta/blood supply/embryology/metabolism ; Protein-Serine-Threonine Kinases/deficiency/genetics/*physiology ; RNA, Messenger/genetics/metabolism ; Signal Transduction ; *Transcription Factors ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors
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    Requirement for the SLP-76 adaptor GADS in T cell development (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-10
    Description: GADS is an adaptor protein implicated in CD3 signaling because of its ability to link SLP-76 to LAT. A GADS-deficient mouse was generated by gene targeting, and the function of GADS in T cell development and activation was examined. GADS- CD4-CD8- thymocytes exhibited a severe block in proliferation but still differentiated into mature T cells. GADS- thymocytes failed to respond to CD3 cross-linking in vivo and were impaired in positive and negative selection. Immunoprecipitation experiments revealed that the association between SLP-76 and LAT was uncoupled in GADS- thymocytes. These observations indicate that GADS is a critical adaptor for CD3 signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoder, J -- Pham, C -- Iizuka, Y M -- Kanagawa, O -- Liu, S K -- McGlade, J -- Cheng, A M -- New York, N.Y. -- Science. 2001 Mar 9;291(5510):1987-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Scientist Training Program, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11239162" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD3/metabolism ; Carrier Proteins/*metabolism ; Cell Differentiation ; Cell Division ; Cell Lineage ; Cell Size ; Female ; Gene Targeting ; Lymphocyte Activation ; Male ; *Membrane Proteins ; Mice ; Mice, Transgenic ; Phosphoproteins/*metabolism ; Phosphorylation ; Receptors, Antigen, T-Cell/metabolism ; Signal Transduction ; Spleen/cytology/immunology ; T-Lymphocytes/*cytology/immunology ; Thymus Gland/cytology/immunology ; src Homology Domains
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    Neuroscience. New leads on the 'how' of Alzheimer's (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marx, J -- New York, N.Y. -- Science. 2001 Sep 21;293(5538):2192-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11567120" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/metabolism/pathology/*physiopathology ; Amyloid beta-Peptides/metabolism ; Amyloid beta-Protein Precursor/metabolism ; Animals ; *Apoptosis ; Brain/*metabolism/pathology ; Carrier Proteins/metabolism ; Caspases/*metabolism ; Cells, Cultured ; DNA Fragmentation ; Enzyme Activation ; Humans ; In Situ Nick-End Labeling ; JNK Mitogen-Activated Protein Kinases ; Mice ; Microfilament Proteins/metabolism ; Mitogen-Activated Protein Kinases/metabolism ; Nerve Degeneration ; Neurons/metabolism/pathology/*physiology ; Synapses/enzymology
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    Taste research. New gene may be key to sweet tooth (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davenport, R J -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):620.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11330309" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; GTP-Binding Proteins/metabolism ; Genes ; Genetic Variation ; Humans ; Mice ; Receptors, Cell Surface/chemistry/*genetics/metabolism ; *Receptors, G-Protein-Coupled ; Saccharin ; Sucrose ; Taste/*genetics ; Taste Buds/*metabolism
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    Formation of neurofibrillary tangles in P301l tau transgenic mice induced by Abeta 42 fibrils (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-25
    Description: beta-Amyloid plaques and neurofibrillary tangles (NFTs) are the defining neuropathological hallmarks of Alzheimer's disease, but their pathophysiological relation is unclear. Injection of beta-amyloid Abeta42 fibrils into the brains of P301L mutant tau transgenic mice caused fivefold increases in the numbers of NFTs in cell bodies within the amygdala from where neurons project to the injection sites. Gallyas silver impregnation identified NFTs that contained tau phosphorylated at serine 212/threonine 214 and serine 422. NFTs were composed of twisted filaments and occurred in 6-month-old mice as early as 18 days after Abeta42 injections. Our data support the hypothesis that Abeta42 fibrils can accelerate NFT formation in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gotz, J -- Chen, F -- van Dorpe, J -- Nitsch, R M -- New York, N.Y. -- Science. 2001 Aug 24;293(5534):1491-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Psychiatry Research, University of Zurich, August Forel Strasse 1, 8008 Zurich, Switzerland. goetz@bli.unizh.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11520988" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Aged, 80 and over ; Alzheimer Disease/metabolism/*pathology ; Amygdala/*pathology ; Amyloid beta-Peptides/administration & dosage/*metabolism ; Animals ; Brain/*pathology ; Epitopes ; Female ; Fluorescent Antibody Technique ; Humans ; Male ; Mice ; Mice, Transgenic ; Microscopy, Immunoelectron ; Mutation ; Neurofibrillary Tangles/*metabolism/pathology ; Peptide Fragments/administration & dosage/*metabolism ; Phosphorylation ; Plaque, Amyloid/*metabolism/pathology ; Protein Conformation ; Protein Isoforms ; Sex Characteristics ; tau Proteins/chemistry/genetics/immunology/*metabolism
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  • 28
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    Reversal of obesity- and diet-induced insulin resistance with salicylates or targeted disruption of Ikkbeta (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-05
    Description: We show that high doses of salicylates reverse hyperglycemia, hyperinsulinemia, and dyslipidemia in obese rodents by sensitizing insulin signaling. Activation or overexpression of the IkappaB kinase beta (IKKbeta) attenuated insulin signaling in cultured cells, whereas IKKbeta inhibition reversed insulin resistance. Thus, IKKbeta, rather than the cyclooxygenases, appears to be the relevant molecular target. Heterozygous deletion (Ikkbeta+/-) protected against the development of insulin resistance during high-fat feeding and in obese Lep(ob/ob) mice. These findings implicate an inflammatory process in the pathogenesis of insulin resistance in obesity and type 2 diabetes mellitus and identify the IKKbeta pathway as a target for insulin sensitization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yuan, M -- Konstantopoulos, N -- Lee, J -- Hansen, L -- Li, Z W -- Karin, M -- Shoelson, S E -- AI43477/AI/NIAID NIH HHS/ -- DK45493/DK/NIDDK NIH HHS/ -- DK51729/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 Aug 31;293(5535):1673-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11533494" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anti-Inflammatory Agents, Non-Steroidal/pharmacology ; Aspirin/administration & dosage/*pharmacology ; Blood Glucose/metabolism ; Cell Line ; Dietary Fats/*administration & dosage ; Gene Deletion ; Gene Targeting ; Glucose Tolerance Test ; I-kappa B Kinase ; Insulin/administration & dosage/blood/*metabolism/pharmacology ; *Insulin Resistance ; Lipids/blood ; Liver/metabolism ; Male ; Mice ; Mice, Obese ; Muscles/metabolism ; Obesity/metabolism/*physiopathology ; Phosphorylation ; Prostaglandin-Endoperoxide Synthases/genetics/metabolism ; Protein-Serine-Threonine Kinases/antagonists & inhibitors/genetics/*metabolism ; Rats ; Rats, Zucker ; Receptor, Insulin/metabolism ; Signal Transduction ; Sodium Salicylate/administration & dosage/*pharmacology ; Tumor Necrosis Factor-alpha/pharmacology
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    A role for thrombin receptor signaling in endothelial cells during embryonic development (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-05
    Description: The coagulation protease thrombin triggers fibrin formation, platelet activation, and other cellular responses at sites of tissue injury. We report a role for PAR1, a protease-activated G protein-coupled receptor for thrombin, in embryonic development. Approximately half of Par1-/- mouse embryos died at midgestation with bleeding from multiple sites. PAR1 is expressed in endothelial cells, and a PAR1 transgene driven by an endothelial-specific promoter prevented death of Par1-/- embryos. Our results suggest that the coagulation cascade and PAR1 modulate endothelial cell function in developing blood vessels and that thrombin's actions on endothelial cells-rather than on platelets, mesenchymal cells, or fibrinogen-contribute to vascular development and hemostasis in the mouse embryo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Griffin, C T -- Srinivasan, Y -- Zheng, Y W -- Huang, W -- Coughlin, S R -- HL44907/HL/NHLBI NIH HHS/ -- HL65590/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2001 Aug 31;293(5535):1666-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cardiovascular Research Institute, University of California at San Francisco (UCSF), San Francisco, California 94143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11533492" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Coagulation ; Blood Coagulation Factors/physiology ; Blood Vessels/*embryology/metabolism ; Calcium/metabolism ; Crosses, Genetic ; *Embryonic and Fetal Development ; Endocardium/embryology/metabolism ; Endothelium, Vascular/cytology/*embryology/metabolism ; Factor V/genetics/physiology ; Female ; Fibrinogen/genetics/physiology ; Fibroblasts/metabolism ; Hemorrhage/embryology ; Hemostasis ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred Strains ; Mice, Transgenic ; *Neovascularization, Physiologic ; Phenotype ; Prothrombin/genetics/physiology ; Receptor, PAR-1 ; Receptors, Thrombin/deficiency/genetics/*physiology ; *Signal Transduction ; Thrombin/physiology ; Thromboplastin/genetics/physiology
    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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    A p53 amino-terminal nuclear export signal inhibited by DNA damage-induced phosphorylation (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-09
    Description: The p53 protein is present in low amounts in normally growing cells and is activated in response to physiological insults. MDM2 regulates p53 either through inhibiting p53's transactivating function in the nucleus or by targeting p53 degradation in the cytoplasm. We identified a previously unknown nuclear export signal (NES) in the amino terminus of p53, spanning residues 11 to 27 and containing two serine residues phosphorylated after DNA damage, which was required for p53 nuclear export in colloboration with the carboxyl-terminal NES. Serine-15-phosphorylated p53 induced by ultraviolet irradiation was not exported. Thus, DNA damage-induced phosphorylation may achieve optimal p53 activation by inhibiting both MDM2 binding to, and the nuclear export of, p53.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Y -- Xiong, Y -- CA65572/CA/NCI NIH HHS/ -- K01 CA087580/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 8;292(5523):1910-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lineberger Comprehensive Cancer Center, Department of Biochemistry and Biophysics, and Program in Molecular Biology and Biotechnology, University of North Carolina at Chapel Hill, NC 27599-7295, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11397945" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Amino Acid Sequence ; Animals ; Cell Fusion ; Cell Line ; Cell Nucleus/*metabolism ; Cells, Cultured ; Cytoplasm/metabolism ; *DNA Damage ; Mice ; Molecular Sequence Data ; Mutation ; *Nuclear Proteins ; Phosphorylation ; Phosphoserine/metabolism ; *Protein Sorting Signals ; Protein Structure, Tertiary ; Proteins/genetics/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-mdm2 ; Recombinant Fusion Proteins/metabolism ; Transfection ; Tumor Suppressor Protein p14ARF ; Tumor Suppressor Protein p53/*chemistry/genetics/*metabolism ; Ubiquitins/metabolism ; Ultraviolet Rays
    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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    Positive regulation of T cell activation and integrin adhesion by the adapter Fyb/Slap (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-22
    Description: The molecular adapter Fyb/Slap regulates signaling downstream of the T cell receptor (TCR), but whether it plays a positive or negative role is controversial. We demonstrate that Fyb/Slap-deficient T cells exhibit defective proliferation and cytokine production in response to TCR stimulation. Fyb/Slap is also required in vivo for T cell-dependent immune responses. Functionally, Fyb/Slap has no apparent role in the activation of known TCR signaling pathways, F-actin polymerization, or TCR clustering. Rather, Fyb/Slap regulates TCR-induced integrin clustering and adhesion. Thus, Fyb/Slap is the first molecular adapter to be identified that couples TCR stimulation to the avidity modulation of integrins governing T cell adhesion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Griffiths, E K -- Krawczyk, C -- Kong, Y Y -- Raab, M -- Hyduk, S J -- Bouchard, D -- Chan, V S -- Kozieradzki, I -- Oliveira-Dos-Santos, A J -- Wakeham, A -- Ohashi, P S -- Cybulsky, M I -- Rudd, C E -- Penninger, J M -- New York, N.Y. -- Science. 2001 Sep 21;293(5538):2260-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Amgen Institute, 620 University Avenue, Toronto, Ontario, Canada M5G 2C1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11567140" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; *Adaptor Proteins, Signal Transducing ; Animals ; Antigens, CD/metabolism ; Antigens, CD3/metabolism ; Antigens, Differentiation, T-Lymphocyte/metabolism ; B-Lymphocytes/immunology ; Carrier Proteins/genetics/*physiology ; Cell Adhesion ; Cell Adhesion Molecules/metabolism ; Chimera ; Gene Targeting ; Humans ; Immunization ; Immunoglobulin G/biosynthesis ; Integrins/*metabolism ; Intercellular Adhesion Molecule-1/metabolism ; Interferon-gamma/biosynthesis ; Interleukin-2/biosynthesis/pharmacology ; Lectins, C-Type ; *Lymphocyte Activation ; Lymphocyte Function-Associated Antigen-1/metabolism ; Mice ; Phosphoproteins/genetics/*physiology ; Receptors, Antigen, T-Cell/immunology/metabolism ; Receptors, Interleukin-2/metabolism ; Recombinant Proteins/metabolism ; Signal Transduction ; T-Lymphocytes/immunology/metabolism/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 32
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    Modulation of blood fluke development in the liver by hepatic CD4+ lymphocytes (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: We have identified an alternate developmental pathway in the life cycle of the trematode pathogen Schistosoma mansoni. This pathway is used in immunodeficient hosts in which the parasite fails to receive appropriate signals from the host immune system. Helminth development is altered at an early stage during infection, resulting in the appearance of attenuated forms that prolong survival of host and parasite. Hepatic CD4+ T lymphocyte populations are an integral component of the immune signal recognized by the parasite.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davies, S J -- Grogan, J L -- Blank, R B -- Lim, K C -- Locksley, R M -- McKerrow, J H -- AI10424/AI/NIAID NIH HHS/ -- F32 AI010424/AI/NIAID NIH HHS/ -- F32 AI010424-02/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1358-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tropical Disease Research Unit, Department of Pathology, Veterans Affairs Medical Center, Howard Hughes Medical Institute, Department of Microbiology and Immunology, University of California San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701932" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD4-Positive T-Lymphocytes/*immunology ; Genes, MHC Class II ; Liver/immunology/*parasitology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Receptors, Antigen, T-Cell, alpha-beta/genetics/immunology ; Schistosoma japonicum/anatomy & histology/growth & development ; Schistosoma mansoni/*growth & development/immunology ; Schistosomiasis mansoni/*immunology/*parasitology ; T-Lymphocyte Subsets/immunology ; beta 2-Microglobulin/genetics/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Prevention of chemotherapy-induced alopecia in rats by CDK inhibitors (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-01-06
    Description: Most traditional cytotoxic anticancer agents ablate the rapidly dividing epithelium of the hair follicle and induce alopecia (hair loss). Inhibition of cyclin-dependent kinase 2 (CDK2), a positive regulator of eukaryotic cell cycle progression, may represent a therapeutic strategy for prevention of chemotherapy-induced alopecia (CIA) by arresting the cell cycle and reducing the sensitivity of the epithelium to many cell cycle-active antitumor agents. Potent small-molecule inhibitors of CDK2 were developed using structure-based methods. Topical application of these compounds in a neonatal rat model of CIA reduced hair loss at the site of application in 33 to 50% of the animals. Thus, inhibition of CDK2 represents a potentially useful approach for the prevention of CIA in cancer patients.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, S T -- Benson, B G -- Bramson, H N -- Chapman, D E -- Dickerson, S H -- Dold, K M -- Eberwein, D J -- Edelstein, M -- Frye, S V -- Gampe Jr, R T -- Griffin, R J -- Harris, P A -- Hassell, A M -- Holmes, W D -- Hunter, R N -- Knick, V B -- Lackey, K -- Lovejoy, B -- Luzzio, M J -- Murray, D -- Parker, P -- Rocque, W J -- Shewchuk, L -- Veal, J M -- Walker, D H -- Kuyper, L F -- New York, N.Y. -- Science. 2001 Jan 5;291(5501):134-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Glaxo Wellcome Research and Development, Research Triangle Park, NC 27709, USA. std41085@glaxowellcome.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11141566" target="_blank"〉PubMed〈/a〉
    Keywords: Alopecia/*chemically induced/*prevention & control ; Animals ; Animals, Newborn ; Antineoplastic Agents/*toxicity ; Antineoplastic Combined Chemotherapy Protocols/toxicity ; Apoptosis/drug effects ; *CDC2-CDC28 Kinases ; Cell Cycle/drug effects ; Cell Line ; Cyclin-Dependent Kinase 2 ; Cyclin-Dependent Kinases/*antagonists & inhibitors/metabolism ; Cyclophosphamide/toxicity ; Cytoprotection/drug effects ; DNA/biosynthesis ; Doxorubicin/toxicity ; Drug Design ; Enzyme Inhibitors/chemical synthesis/chemistry/*pharmacology ; Epithelium/drug effects ; Etoposide/toxicity ; Hair Follicle/cytology/*drug effects ; Humans ; Indoles/chemical synthesis/chemistry/*pharmacology ; Mice ; Mice, SCID ; Phosphorylation ; Protein-Serine-Threonine Kinases/*antagonists & inhibitors/metabolism ; Rats ; Retinoblastoma Protein/metabolism ; Scalp/transplantation ; Sulfonamides/chemical synthesis/chemistry/*pharmacology ; Transplantation, Heterologous
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    Negative regulation of neural stem/progenitor cell proliferation by the Pten tumor suppressor gene in vivo (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-03
    Description: The mechanisms controlling neural stem cell proliferation are poorly understood. Here we demonstrate that the PTEN tumor suppressor plays an important role in regulating neural stem/progenitor cells in vivo and in vitro. Mice lacking PTEN exhibited enlarged, histoarchitecturally abnormal brains, which resulted from increased cell proliferation, decreased cell death, and enlarged cell size. Neurosphere cultures revealed a greater proliferation capacity for tripotent Pten-/- central nervous system stem/progenitor cells, which can be attributed, at least in part, to a shortened cell cycle. However, cell fate commitments of the progenitors were largely undisturbed. Our results suggest that PTEN negatively regulates neural stem cell proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Groszer, M -- Erickson, R -- Scripture-Adams, D D -- Lesche, R -- Trumpp, A -- Zack, J A -- Kornblum, H I -- Liu, X -- Wu, H -- MH062800-01/MH/NIMH NIH HHS/ -- NS38489/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2186-9. Epub 2001 Nov 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular and Medical Pharmacology, UCLA School of Medicine, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11691952" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Astrocytes/cytology ; Brain/abnormalities/*cytology/embryology ; Cell Count ; Cell Differentiation ; *Cell Division ; Cell Lineage ; Cell Size ; Cells, Cultured ; Female ; Flow Cytometry ; Fluoresceins/metabolism ; Gene Deletion ; Intermediate Filament Proteins/metabolism ; Male ; Mice ; Mice, Knockout ; *Nerve Tissue Proteins ; Nestin ; Neurons/*cytology ; PTEN Phosphohydrolase ; Phosphoric Monoester Hydrolases/*genetics/*physiology ; Stem Cells/*cytology ; Succinimides/metabolism ; Tumor Suppressor Proteins/*genetics/*physiology
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    Liver organogenesis promoted by endothelial cells prior to vascular function (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-29
    Description: The embryonic role of endothelial cells and nascent vessels in promoting organogenesis, prior to vascular function, is unclear. We find that early endothelial cells in mouse embryos surround newly specified hepatic endoderm and delimit the mesenchymal domain into which the liver bud grows. In flk-1 mutant embryos, which lack endothelial cells, hepatic specification occurs, but liver morphogenesis fails prior to mesenchyme invasion. We developed an embryo tissue explant system that permits liver bud vasculogenesis and show that in the absence of endothelial cells, or when the latter are inhibited, there is a selective defect in hepatic outgrowth. We conclude that vasculogenic endothelial cells and nascent vessels are critical for the earliest stages of organogenesis, prior to blood vessel function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsumoto, K -- Yoshitomi, H -- Rossant, J -- Zaret, K S -- CA06297/CA/NCI NIH HHS/ -- GM36477/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 19;294(5542):559-63. Epub 2001 Sep 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cell and Developmental Biology Program, Fox Chase Cancer Center, 7701 Burholme Avenue, Philadelphia, PA 19111, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11577199" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Vessels/cytology/embryology/physiology ; Culture Techniques ; *Embryonic Induction ; Endoderm/*physiology ; Endothelium, Vascular/cytology/embryology/*physiology ; Female ; Hepatocyte Growth Factor/antagonists & inhibitors/metabolism/pharmacology ; Hepatocytes/physiology ; Liver/blood supply/cytology/drug effects/*embryology ; Male ; Mesoderm/physiology ; Mice ; Mice, Inbred C3H ; *Mitogens ; Morphogenesis ; Mutation ; Neovascularization, Physiologic ; Receptor Protein-Tyrosine Kinases/genetics/physiology ; Receptors, Growth Factor/genetics/physiology ; Receptors, Vascular Endothelial Growth Factor ; Signal Transduction/drug effects
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    Success and virulence in Toxoplasma as the result of sexual recombination between two distinct ancestries (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-06
    Description: Toxoplasma gondii is a common human pathogen causing serious, even fatal, disease in the developing fetus and in immunocompromised patients. Despite its ability to reproduce sexually and its broad geographic and host range, Toxoplasma has a clonal population structure comprised principally of three lines. We have analyzed 15 polymorphic loci in the archetypal type I, II, and III strains and found that polymorphism was limited to, at most, two rather than three allelic classes and no polymorphism was detected between alleles in strains of a given type. Multilocus analysis of 10 nonarchetypal isolates likewise clustered the vast majority of alleles into the same two distinct ancestries. These data strongly suggest that the currently predominant genotypes exist as a pandemic outbreak from a genetic mixing of two discrete ancestral lines. To determine if such mixing could lead to the extreme virulence observed for some strains, we examined the F(1) progeny of a cross between a type II and III strain, both of which are relatively avirulent in mice. Among the progeny were recombinants that were at least 3 logs more virulent than either parent. Thus, sexual recombination, by combining polymorphisms in two distinct and competing clonal lines, can be a powerful force driving the natural evolution of virulence in this highly successful pathogen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grigg, M E -- Bonnefoy, S -- Hehl, A B -- Suzuki, Y -- Boothroyd, J C -- AI04717/AI/NIAID NIH HHS/ -- AI21423/AI/NIAID NIH HHS/ -- AI41014/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 5;294(5540):161-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305-5124, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11588262" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Base Sequence ; Crosses, Genetic ; Genes, Protozoan ; Genetic Variation ; Genotype ; Humans ; Introns ; Lethal Dose 50 ; Mice ; Mice, Inbred CBA ; Molecular Sequence Data ; Polymorphism, Genetic ; Polymorphism, Single Nucleotide ; *Recombination, Genetic ; Toxoplasma/classification/*genetics/isolation & purification/*pathogenicity ; Toxoplasmosis/*parasitology ; Toxoplasmosis, Animal/*parasitology ; Virulence/genetics
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    Neuroscience. A kinase to dampen the effects of cocaine? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gupta, A -- Tsai, L H -- New York, N.Y. -- Science. 2001 Apr 13;292(5515):236-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School and Howard Hughes Medical Institute, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11305318" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cocaine/*pharmacology ; Corpus Striatum/*drug effects/metabolism ; Cyclic AMP-Dependent Protein Kinases/antagonists & inhibitors/metabolism ; Cyclin-Dependent Kinase 5 ; Cyclin-Dependent Kinases/antagonists & inhibitors/genetics/*metabolism ; Dopamine/metabolism ; Dopamine Uptake Inhibitors/*pharmacology ; Dopamine and cAMP-Regulated Phosphoprotein 32 ; Mice ; Mice, Knockout ; Motor Activity/drug effects ; Nerve Tissue Proteins/metabolism ; Neurons/metabolism ; Phosphoprotein Phosphatases/antagonists & inhibitors/metabolism ; Phosphoproteins/metabolism ; Phosphorylation ; Proto-Oncogene Proteins c-fos/metabolism ; Rats ; Signal Transduction
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    Preferential localization of effector memory cells in nonlymphoid tissue (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-27
    Description: Many intracellular pathogens infect a broad range of host tissues, but the importance of T cells for immunity in these sites is unclear because most of our understanding of antimicrobial T cell responses comes from analyses of lymphoid tissue. Here, we show that in response to viral or bacterial infection, antigen-specific CD8 T cells migrated to nonlymphoid tissues and were present as long-lived memory cells. Strikingly, CD8 memory T cells isolated from nonlymphoid tissues exhibited effector levels of lytic activity directly ex vivo, in contrast to their splenic counterparts. These results point to the existence of a population of extralymphoid effector memory T cells poised for immediate response to infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Masopust, D -- Vezys, V -- Marzo, A L -- Lefrancois, L -- AI41576/AI/NIAID NIH HHS/ -- DK45260/DK/NIDDK NIH HHS/ -- T32-AI07080/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 23;291(5512):2413-7. Epub 2001 Mar 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Immunology, Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11264538" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CD8-Positive T-Lymphocytes/*immunology ; Cell Movement ; Cells, Cultured ; Flow Cytometry ; H-2 Antigens/immunology ; *Immunologic Memory ; Intestine, Small/immunology ; Listeria monocytogenes/genetics/immunology ; Listeriosis/*immunology ; Liver/immunology ; Lung/immunology ; Lymphocyte Activation ; Lymphoid Tissue/immunology ; Mice ; Mice, Inbred C57BL ; Ovalbumin/immunology ; Phenotype ; Rhabdoviridae Infections/*immunology ; T-Lymphocyte Subsets/*immunology ; Vesicular stomatitis Indiana virus/immunology
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    Binding of GGA2 to the lysosomal enzyme sorting motif of the mannose 6-phosphate receptor (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-02
    Description: The GGAs are a multidomain protein family implicated in protein trafficking between the Golgi and endosomes. Here, the VHS domain of GGA2 was shown to bind to the acidic cluster-dileucine motif in the cytoplasmic tail of the cation-independent mannose 6-phosphate receptor (CI-MPR). Receptors with mutations in this motif were defective in lysosomal enzyme sorting. The hinge domain of GGA2 bound clathrin, suggesting that GGA2 could be a link between cargo molecules and clathrin-coated vesicle assembly. Thus, GGA2 binding to the CI-MPR is important for lysosomal enzyme targeting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhu, Y -- Doray, B -- Poussu, A -- Lehto, V P -- Kornfeld, S -- R01 CA-08759/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1716-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11387476" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Vesicular Transport ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; *Carrier Proteins ; Cations ; Clathrin/metabolism ; Dipeptides/chemistry/metabolism ; L Cells (Cell Line) ; Lysosomes/*enzymology ; Mice ; Molecular Sequence Data ; Mutation ; Protein Sorting Signals ; Protein Structure, Tertiary ; *Protein Transport ; Proteins/chemistry/genetics/*metabolism ; Rats ; Receptor, IGF Type 2/*chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Solubility ; Transcription Factor AP-1/metabolism ; Transport Vesicles/metabolism ; Two-Hybrid System Techniques ; trans-Golgi Network/metabolism
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    Loss of huntingtin-mediated BDNF gene transcription in Huntington's disease (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-16
    Description: Huntingtin is a 350-kilodalton protein of unknown function that is mutated in Huntington's disease (HD), a neurodegenerative disorder. The mutant protein is presumed to acquire a toxic gain of function that is detrimental to striatal neurons in the brain. However, loss of a beneficial activity of wild-type huntingtin may also cause the death of striatal neurons. Here we demonstrate that wild-type huntingtin up-regulates transcription of brain-derived neurotrophic factor (BDNF), a pro-survival factor produced by cortical neurons that is necessary for survival of striatal neurons in the brain. We show that this beneficial activity of huntingtin is lost when the protein becomes mutated, resulting in decreased production of cortical BDNF. This leads to insufficient neurotrophic support for striatal neurons, which then die. Restoring wild-type huntingtin activity and increasing BDNF production may be therapeutic approaches for treating HD.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zuccato, C -- Ciammola, A -- Rigamonti, D -- Leavitt, B R -- Goffredo, D -- Conti, L -- MacDonald, M E -- Friedlander, R M -- Silani, V -- Hayden, M R -- Timmusk, T -- Sipione, S -- Cattaneo, E -- E.0840/Telethon/Italy -- New York, N.Y. -- Science. 2001 Jul 20;293(5529):493-8. Epub 2001 Jun 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacological Sciences, University of Milano, Via Balzaretti 9, 20133 Milano, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11408619" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Apoptosis ; Brain-Derived Neurotrophic Factor/biosynthesis/*genetics/metabolism ; Cell Survival ; Cells, Cultured ; Cerebral Cortex/cytology/*metabolism ; Corpus Striatum/cytology/*metabolism/pathology ; Exons ; Hippocampus/cytology/metabolism/pathology ; Humans ; Huntington Disease/*genetics/metabolism/pathology ; Mice ; Mice, Transgenic ; Mutation ; Nerve Degeneration ; Nerve Growth Factors/genetics/metabolism ; Nerve Tissue Proteins/genetics/*physiology ; Neurons/*metabolism/pathology ; Nuclear Proteins/genetics/*physiology ; Promoter Regions, Genetic ; Transcription, Genetic ; Transfection
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    Obesity research. Pot-bellied mice point to obesity enzyme (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gura, T -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2071-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11739926" target="_blank"〉PubMed〈/a〉
    Keywords: 11-beta-Hydroxysteroid Dehydrogenase Type 2 ; Abdomen ; Adipose Tissue/*enzymology/metabolism ; Animals ; Body Composition ; Diabetes Mellitus/enzymology/metabolism ; Enzyme Inhibitors/pharmacology ; Humans ; Hydrocortisone/blood/*metabolism ; Hydroxysteroid Dehydrogenases/antagonists & inhibitors/genetics/*metabolism ; Hypoglycemic Agents/pharmacology ; Male ; Metabolic Syndrome X ; Mice ; Mice, Transgenic ; Obesity/*enzymology/genetics/metabolism ; Skin
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    BAFF-R, a newly identified TNF receptor that specifically interacts with BAFF (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-18
    Description: B cell homeostasis has been shown to critically depend on BAFF, the B cell activation factor from the tumor necrosis factor (TNF) family. Although BAFF is already known to bind two receptors, BCMA and TACI, we have identified a third receptor for BAFF that we have termed BAFF-R. BAFF-R binding appears to be highly specific for BAFF, suggesting a unique role for this ligand-receptor interaction. Consistent with this, the BAFF-R locus is disrupted in A/WySnJ mice, which display a B cell phenotype qualitatively similar to that of the BAFF-deficient mice. Thus, BAFF-R appears to be the principal receptor for BAFF-mediated mature B cell survival.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thompson, J S -- Bixler, S A -- Qian, F -- Vora, K -- Scott, M L -- Cachero, T G -- Hession, C -- Schneider, P -- Sizing, I D -- Mullen, C -- Strauch, K -- Zafari, M -- Benjamin, C D -- Tschopp, J -- Browning, J L -- Ambrose, C -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2108-11. Epub 2001 Aug 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biogen, 12 Cambridge Center, Cambridge, MA 02142, USA., The Institute of Biochemistry, University of Lausanne, CH-1066, Epalinges, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509692" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Cell Activating Factor ; B-Cell Activation Factor Receptor ; B-Cell Maturation Antigen ; B-Lymphocytes/immunology/metabolism/*physiology ; Cell Line ; Chromosome Mapping ; Chromosomes, Human, Pair 22 ; Cloning, Molecular ; Homeostasis ; Humans ; Ligands ; Lymphoid Tissue/metabolism ; Male ; Membrane Proteins/*metabolism ; Mice ; Mice, Inbred A ; Mice, Inbred C57BL ; Molecular Sequence Data ; RNA, Messenger/chemistry/genetics/metabolism ; Receptors, Tumor Necrosis Factor/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection ; Transmembrane Activator and CAML Interactor Protein ; Tumor Necrosis Factor-alpha/*metabolism
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    Virus-assisted mapping of neural inputs to a feeding center in the hypothalamus (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-03
    Description: We report the development of a pseudorabies virus that can be used for retrograde tracing from selected neurons. This virus encodes a green fluorescent protein marker and replicates only in neurons that express the Cre recombinase and in neurons in synaptic contact with the originally infected cells. The virus was injected into the arcuate nucleus of mice that express Cre only in those neurons that express neuropeptide Y or the leptin receptor. Sectioning of the brains revealed that these neurons receive inputs from neurons in other regions of the hypothalamus, as well as the amygdala, cortex, and other brain regions. These data suggest that higher cortical centers modulate leptin signaling in the hypothalamus. This method of neural tracing may prove useful in studies of other complex neural circuits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeFalco, J -- Tomishima, M -- Liu, H -- Zhao, C -- Cai, X -- Marth, J D -- Enquist, L -- Friedman, J M -- DK48247/DK/NIDDK NIH HHS/ -- R01133506/PHS HHS/ -- R01DK41096/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 30;291(5513):2608-13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11283374" target="_blank"〉PubMed〈/a〉
    Keywords: Afferent Pathways ; Animals ; Arcuate Nucleus of Hypothalamus/cytology/*physiology/virology ; Brain/cytology/*physiology/virology ; Brain Mapping ; Carrier Proteins/genetics/metabolism ; Chromosomes, Artificial, Bacterial ; *Eating ; Gene Expression ; Green Fluorescent Proteins ; Herpesvirus 1, Suid/*genetics/physiology ; Hypothalamus/cytology/*physiology/virology ; Integrases/genetics/metabolism ; Luminescent Proteins/genetics/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Neurons/*metabolism/virology ; Neuropeptide Y/genetics/metabolism ; *Receptors, Cell Surface ; Receptors, Leptin ; Recombinant Fusion Proteins/metabolism ; Recombination, Genetic ; *Viral Proteins ; Virus Replication ; tau Proteins/genetics/metabolism
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    Biomedicine. Tauists and beta-aptists united--well almost! (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, V M -- New York, N.Y. -- Science. 2001 Aug 24;293(5534):1446-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurodegenerative Disease Research, Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104-4283, USA. vmylee@mail.med.upenn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11520974" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/drug therapy/metabolism/*pathology ; Amyloid beta-Peptides/administration & dosage/genetics/*metabolism/pharmacology ; Amyloid beta-Protein Precursor/genetics/metabolism ; Animals ; Brain/metabolism/*pathology ; Disease Models, Animal ; Humans ; Mice ; Mice, Transgenic ; Mutation ; Nerve Degeneration ; Neurofibrillary Tangles/metabolism/*pathology ; Peptide Fragments/administration & dosage/pharmacology ; Plaque, Amyloid/metabolism/*pathology ; tau Proteins/genetics/*metabolism
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    A transgenic model for listeriosis: role of internalin in crossing the intestinal barrier (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-02
    Description: Listeria monocytogenes is responsible for severe food-borne infections, but the mechanisms by which bacteria cross the intestinal barrier are unknown. Listeria monocytogenes expresses a surface protein, internalin, that interacts with a host receptor, E-cadherin, to promote entry into human epithelial cells. Murine E-cadherin, in contrast to guinea pig E-cadherin, does not interact with internalin, excluding the mouse as a model for addressing internalin function in vivo. In guinea pigs and transgenic mice expressing human E-cadherin, internalin was found to mediate invasion of enterocytes and crossing of the intestinal barrier. These results illustrate how relevant animal models for human infections can be generated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lecuit, M -- Vandormael-Pournin, S -- Lefort, J -- Huerre, M -- Gounon, P -- Dupuy, C -- Babinet, C -- Cossart, P -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1722-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Unite des Interactions Bacteries-Cellules, Station Centrale de Microscopie Electronique, Institut Pasteur, 75724 Paris cedex 15, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11387478" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/*metabolism ; Bacterial Translocation ; Cadherins/genetics/*metabolism ; Carrier Proteins/genetics ; Colony Count, Microbial ; *Disease Models, Animal ; Enterocytes/metabolism/*microbiology ; Fatty Acid-Binding Proteins ; Guinea Pigs ; Humans ; Intestinal Mucosa/microbiology/pathology ; Intestine, Small/microbiology/pathology ; Listeria monocytogenes/growth & development/metabolism/*pathogenicity ; Listeriosis/*microbiology/pathology ; Liver/microbiology/pathology ; Lymph Nodes/microbiology/pathology ; Male ; Mice ; Mice, Transgenic ; *Neoplasm Proteins ; *Nerve Tissue Proteins ; Promoter Regions, Genetic ; Spleen/microbiology/pathology ; Transgenes ; *Tumor Suppressor Proteins ; Virulence
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    Bmf: a proapoptotic BH3-only protein regulated by interaction with the myosin V actin motor complex, activated by anoikis (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-08
    Description: Bcl-2 family members bearing only the BH3 domain are essential inducers of apoptosis. We identified a BH3-only protein, Bmf, and show that its BH3 domain is required both for binding to prosurvival Bcl-2 proteins and for triggering apoptosis. In healthy cells, Bmf is sequestered to myosin V motors by association with dynein light chain 2. Certain damage signals, such as loss of cell attachment (anoikis), unleash Bmf, allowing it to translocate and bind prosurvival Bcl-2 proteins. Thus, at least two mammalian BH3-only proteins, Bmf and Bim, function to sense intracellular damage by their localization to distinct cytoskeletal structures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Puthalakath, H -- Villunger, A -- O'Reilly, L A -- Beaumont, J G -- Coultas, L -- Cheney, R E -- Huang, D C -- Strasser, A -- CA 80188/CA/NCI NIH HHS/ -- R29 DC003299/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 2001 Sep 7;293(5536):1829-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Walter and Eliza Hall Institute of Medical Research, Melbourne, P.O. Royal Melbourne Hospital, 3050 VIC, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11546872" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; *Anoikis ; Apoptosis Regulatory Proteins ; Calmodulin-Binding Proteins/*metabolism ; Carrier Proteins/*chemistry/genetics/*metabolism ; Cell Line ; Cytoskeleton/metabolism ; *Drosophila Proteins ; Dyneins ; Gene Expression Profiling ; Humans ; *Membrane Proteins ; Mice ; Molecular Motor Proteins/*metabolism ; Molecular Sequence Data ; Mutation ; Myeloid Cell Leukemia Sequence 1 Protein ; *Myosin Type V ; Neoplasm Proteins/genetics/metabolism ; Nerve Tissue Proteins/*metabolism ; Protein Binding ; Protein Structure, Tertiary ; Protein Transport ; *Proto-Oncogene Proteins ; Proto-Oncogene Proteins c-bcl-2/chemistry/genetics/metabolism ; RNA, Messenger/analysis/genetics ; Transfection ; Two-Hybrid System Techniques
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    Rapid killing of Streptococcus pneumoniae with a bacteriophage cell wall hydrolase (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-12
    Description: Nasopharyngeal carriage is the major reservoir for Streptococcus pneumoniae in the community. Although eliminating this reservoir would greatly reduce disease occurrence, no suitable intervention has been available for this purpose. We show here that seconds after contact, a purified pneumococcal bacteriophage lytic enzyme (Pal) is able to kill 15 common serotypes of pneumococci, including highly penicillin-resistant strains. In vivo, previously colonized mice revealed undetectable pneumococcal titers 5 hours after a single enzyme treatment. Pal enzyme had little or no effect on microorganisms normally found in the human oropharynx, and Pal-resistant pneumococci could not be detected after extensive exposure to the enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Loeffler, J M -- Nelson, D -- Fischetti, V A -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2170-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Bacterial Pathogenesis, The Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11739958" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Capsules/physiology ; Bacteriolysis ; Cell Membrane/drug effects/ultrastructure ; Cell Wall/drug effects/ultrastructure ; Colony Count, Microbial ; Drug Resistance, Bacterial ; Humans ; Mice ; Mutation ; N-Acetylmuramoyl-L-alanine Amidase/*metabolism/*pharmacology ; Nasopharynx/*microbiology ; Random Allocation ; Streptococcus/drug effects/growth & development ; Streptococcus Phages/*enzymology ; Streptococcus pneumoniae/*drug effects/growth & ; development/physiology/ultrastructure
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    Transcription factor IID--not so basal after all (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Verrijzer, C P -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2010-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, MGC, Centre for Biomedical Genetics, Leiden University Medical Centre, Leiden, Netherlands. verrijzer@lumc.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11557865" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA-Binding Proteins/genetics/*metabolism ; Drosophila ; Drosophila Proteins ; Female ; *Gene Expression Regulation, Developmental ; Humans ; Male ; Mice ; Oligonucleotide Array Sequence Analysis ; Oogenesis ; Organ Specificity ; Ovarian Follicle/cytology/physiology ; Promoter Regions, Genetic ; Spermatogenesis ; *TATA-Binding Protein Associated Factors ; TATA-Box Binding Protein ; Telomeric Repeat Binding Protein 2 ; Transcription Factor TFIID ; Transcription Factors/genetics/*metabolism ; Transcription Factors, TFII/genetics/*metabolism ; *Transcription, Genetic
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    Neurobiology. Neurocreationism--making new cortical maps (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rakic, P -- New York, N.Y. -- Science. 2001 Nov 2;294(5544):1011-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Yale University School of Medicine, New Haven, CT 06520, USA. pasko.rakic@yale.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11691974" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Body Patterning ; Brain Mapping ; Cerebral Cortex/*embryology/metabolism ; Electroporation ; Fibroblast Growth Factor 8 ; Fibroblast Growth Factors/genetics/*metabolism ; Mice ; Neocortex/embryology/metabolism ; Occipital Lobe/embryology/metabolism ; Signal Transduction ; Telencephalon/embryology/metabolism ; Thalamus/embryology
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    Malaria. Old movie spawns a new discovery (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Enserink, M -- New York, N.Y. -- Science. 2001 Jan 5;291(5501):24-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11191991" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Artifacts ; Cell Membrane/parasitology/ultrastructure ; Cell Movement ; Cells, Cultured ; Hepatocytes/*parasitology/ultrastructure ; Humans ; Malaria/parasitology ; Mice ; Motion Pictures as Topic ; Plasmodium yoelii/growth & development/*physiology ; Vacuoles/physiology/ultrastructure
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    Neuroscience. New route to big brains (2001)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2001-09-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, L -- New York, N.Y. -- Science. 2001 Sep 7;293(5536):1746-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11546846" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Brain/anatomy & histology/*cytology/*embryology ; *Cell Movement ; Haplorhini ; Humans ; Mice ; Neurons/cytology/physiology ; Organ Specificity ; Species Specificity ; Telencephalon/cytology/*embryology ; Thalamus/cytology/*embryology
    Print ISSN: 0036-8075
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    A ribonucleotide reductase homolog of cytomegalovirus and endothelial cell tropism (2001)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2001-02-24
    Description: Human cytomegalovirus infects vascular tissues and has been associated with atherogenesis and coronary restenosis. Although established laboratory strains of human cytomegalovirus have lost the ability to grow on vascular endothelial cells, laboratory strains of murine cytomegalovirus retain this ability. With the use of a forward-genetic procedure involving random transposon mutagenesis and rapid phenotypic screening, we identified a murine cytomegalovirus gene governing endothelial cell tropism. This gene, M45, shares sequence homology to ribonucleotide reductase genes. Endothelial cells infected with M45-mutant viruses rapidly undergo apoptosis, suggesting that a viral strategy to evade destruction by cellular apoptosis is indispensable for viral growth in endothelial cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brune, W -- Menard, C -- Heesemann, J -- Koszinowski, U H -- New York, N.Y. -- Science. 2001 Jan 12;291(5502):303-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA. wbrune@princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11209080" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Apoptosis ; Base Sequence ; Cell Line ; Cytopathogenic Effect, Viral ; DNA Transposable Elements ; Endothelium, Vascular/*cytology/*virology ; Fibroblasts/virology ; Frameshift Mutation ; Gene Library ; *Genes, Viral ; Mice ; Molecular Sequence Data ; Muromegalovirus/*genetics/growth & development/*physiology ; Mutagenesis, Insertional ; Open Reading Frames ; Phenotype ; Ribonucleotide Reductases/*genetics/physiology ; *Viral Proteins ; Virus Replication
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    Developmental biology. The hottest stem cells are also the toughest (2001)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2001-05-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, G -- New York, N.Y. -- Science. 2001 Apr 20;292(5516):429.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11330290" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Culture Techniques ; Cell Differentiation ; Cell Line ; Collagen ; Culture Media, Conditioned ; Drug Combinations ; Epithelial Cells/cytology/metabolism ; Genetic Engineering ; Green Fluorescent Proteins ; Hepatocytes/cytology/metabolism ; Humans ; Laminin ; Luminescent Proteins/biosynthesis ; Mice ; Neurons/cytology/metabolism ; Proteoglycans ; Stem Cell Transplantation ; Stem Cells/*cytology
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    Biomedicine. Clotting factors build blood vessels (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carmeliet, P -- New York, N.Y. -- Science. 2001 Aug 31;293(5535):1602-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University Leuven, Herestraat 49, Leuven, B-3000, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11533466" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Blood Coagulation ; Blood Coagulation Factors/*physiology ; Blood Vessels/*embryology ; Cell Differentiation ; DNA-Binding Proteins/physiology ; Embryonic and Fetal Development ; Endothelial Growth Factors/physiology ; Endothelium, Vascular/*cytology/embryology/physiology ; Hemostasis ; Hypoxia-Inducible Factor 1 ; Hypoxia-Inducible Factor 1, alpha Subunit ; Lymphokines/physiology ; Mice ; Models, Biological ; Muscle, Smooth, Vascular/cytology/physiology ; *Neovascularization, Physiologic ; Nuclear Proteins/physiology ; Receptor, PAR-1 ; Receptors, Thrombin/genetics/*physiology ; Signal Transduction ; Thrombin/physiology ; Thromboplastin/physiology ; *Transcription Factors ; Vascular Endothelial Growth Factor A ; Vascular Endothelial Growth Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Gene therapy. Repair kits for faulty genes (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferber, D -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1639.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721030" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; DNA/chemistry/genetics/metabolism ; DNA Repair/drug effects/*genetics ; Dependovirus/genetics ; Gene Targeting/*methods ; Genetic Diseases, Inborn/*genetics/*therapy ; Genetic Therapy/*methods/trends ; Humans ; Mice ; Mutation/*genetics ; Oligonucleotides/chemistry/genetics/metabolism/pharmacology ; Point Mutation/genetics ; Recombination, Genetic/drug effects/genetics ; Sequence Homology, Nucleic Acid
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    Immunology. B cell receptor rehabilitation--pausing to reflect (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉King, L B -- Monroe, J G -- New York, N.Y. -- Science. 2001 Feb 23;291(5508):1503-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11234081" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Autoantigens/immunology ; B-Lymphocytes/cytology/*immunology ; Clonal Anergy ; Clonal Deletion ; *Gene Rearrangement, B-Lymphocyte, Light Chain ; Genes, Immunoglobulin ; Hematopoietic Stem Cells/cytology/immunology ; Mice ; Mice, Transgenic ; Models, Immunological ; Receptors, Antigen, B-Cell/*genetics/*immunology ; Recombination, Genetic ; *Self Tolerance ; Signal Transduction
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    Genetics. Fragile X's missing partners identified (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sohn, E -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1809.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729277" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Disease Models, Animal ; Drosophila melanogaster/genetics/metabolism ; Fragile X Mental Retardation Protein ; Fragile X Syndrome/*etiology/genetics/*metabolism ; *Gene Expression Regulation ; Gene Library ; Humans ; Mice ; Microtubule-Associated Proteins/genetics/*metabolism ; Mutation/genetics ; Nerve Tissue Proteins/*metabolism ; Phenotype ; RNA, Messenger/chemistry/genetics/metabolism ; RNA-Binding Proteins/*metabolism ; Up-Regulation
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    gamma -Secretase cleavage and nuclear localization of ErbB-4 receptor tyrosine kinase (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-27
    Description: ErbB-4 is a transmembrane receptor tyrosine kinase that regulates cell proliferation and differentiation. After binding of its ligand heregulin (HRG) or activation of protein kinase C (PKC) by 12-O-tetradecanoylphorbol-13-acetate (TPA), the ErbB-4 ectodomain is cleaved by a metalloprotease. We now report a subsequent cleavage by gamma-secretase that releases the ErbB-4 intracellular domain from the membrane and facilitates its translocation to the nucleus. gamma-Secretase cleavage was prevented by chemical inhibitors or a dominant negative presenilin. Inhibition of gamma-secretase also prevented growth inhibition by HRG. gamma-Secretase cleavage of ErbB-4 may represent another mechanism for receptor tyrosine kinase-mediated signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ni, C Y -- Murphy, M P -- Golde, T E -- Carpenter, G -- CA24071/CA/NCI NIH HHS/ -- CA68485/CA/NCI NIH HHS/ -- DK20593/DK/NIDDK NIH HHS/ -- NS39072/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2179-81. Epub 2001 Oct 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11679632" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Amino Acid Sequence ; Amyloid Precursor Protein Secretases ; Animals ; Aspartic Acid Endopeptidases ; COS Cells ; Carbamates/pharmacology ; Cell Division/drug effects ; Cell Line ; Cell Membrane/metabolism ; Cell Nucleus/*metabolism ; Cytoplasm/metabolism ; Dipeptides/pharmacology ; Endopeptidases/*metabolism ; Fatty Acids, Unsaturated/pharmacology ; Humans ; Membrane Proteins/genetics/metabolism ; Metalloendopeptidases/metabolism ; Mice ; Molecular Sequence Data ; Mutation ; Neuregulin-1/pharmacology ; Presenilin-1 ; Protease Inhibitors/pharmacology ; Protein Structure, Tertiary ; Receptor, Epidermal Growth Factor/chemistry/*metabolism ; Receptor, ErbB-4 ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transcriptional Activation ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
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    Differentiation of embryonic stem cell lines generated from adult somatic cells by nuclear transfer (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-28
    Description: Embryonic stem (ES) cells are fully pluripotent in that they can differentiate into all cell types, including gametes. We have derived 35 ES cell lines via nuclear transfer (ntES cell lines) from adult mouse somatic cells of inbred, hybrid, and mutant strains. ntES cells contributed to an extensive variety of cell types, including dopaminergic and serotonergic neurons in vitro and germ cells in vivo. Cloning by transfer of ntES cell nuclei could result in normal development of fertile adults. These studies demonstrate the full pluripotency of ntES cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wakayama, T -- Tabar, V -- Rodriguez, I -- Perry, A C -- Studer, L -- Mombaerts, P -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):740-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Rockefeller University, New York, NY 10021, USA. teru@advancedcell.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11326103" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/*cytology ; *Cell Differentiation ; Cell Line ; Cell Lineage ; Chimera ; Cloning, Organism ; Crosses, Genetic ; Dopamine/metabolism ; Embryo Transfer ; Female ; Germ Cells/*cytology ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred DBA ; Mice, Inbred ICR ; Mice, Nude ; Neurons/*cytology ; *Nuclear Transfer Techniques ; Serotonin/metabolism ; Stem Cells/*cytology
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    Protein synthesis. The perks of balancing glucose (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-04
    Description: What do the regulation of translation initiation and glucose metabolism have to do with each other? Quite a lot, it seems, according to Sonenberg and Newgard in their Perspective. They discuss new findings that identify the kinase responsible for inactivating eIF2--a factor that is required for translation initiation (and hence protein synthesis)--when the endoplasmic reticulum is under stress. Loss of this kinase results in destruction of insulin-producing b cells in the pancreas and dysregulation of glucose homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sonenberg, N -- Newgard, C B -- New York, N.Y. -- Science. 2001 Aug 3;293(5531):818-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11486079" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Glucose/metabolism ; Endoplasmic Reticulum/*metabolism ; Eukaryotic Initiation Factor-2/*metabolism ; Gluconeogenesis ; Glucose/*metabolism ; Homeostasis ; Hyperglycemia/etiology ; Hypoglycemia/etiology ; Islets of Langerhans/enzymology/metabolism ; Liver/metabolism ; Mice ; Mutation ; Phosphorylation ; *Protein Biosynthesis ; Protein Folding ; eIF-2 Kinase/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Animal welfare. Congress clears way for rodent rules (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malakoff, D -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1637.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721028" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; Animal Rights/economics/legislation & jurisprudence ; Animal Welfare/economics/*legislation & jurisprudence ; Animals ; Birds ; Government ; *Government Regulation ; Housing, Animal/economics/legislation & jurisprudence ; Mice ; *Models, Animal ; Rats ; Research Design/legislation & jurisprudence ; *Rodentia ; United States ; United States Department of Agriculture/*legislation & jurisprudence
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    The influence of the proinflammatory cytokine, osteopontin, on autoimmune demyelinating disease (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-27
    Description: Multiple sclerosis is a demyelinating disease, characterized by inflammation in the brain and spinal cord, possibly due to autoimmunity. Large-scale sequencing of cDNA libraries, derived from plaques dissected from brains of patients with multiple sclerosis (MS), indicated an abundance of transcripts for osteopontin (OPN). Microarray analysis of spinal cords from rats paralyzed by experimental autoimmune encephalomyelitis (EAE), a model of MS, also revealed increased OPN transcripts. Osteopontin-deficient mice were resistant to progressive EAE and had frequent remissions, and myelin-reactive T cells in OPN-/- mice produced more interleukin 10 and less interferon-gamma than in OPN+/+ mice. Osteopontin thus appears to regulate T helper cell-1 (TH1)-mediated demyelinating disease, and it may offer a potential target in blocking development of progressive MS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chabas, D -- Baranzini, S E -- Mitchell, D -- Bernard, C C -- Rittling, S R -- Denhardt, D T -- Sobel, R A -- Lock, C -- Karpuj, M -- Pedotti, R -- Heller, R -- Oksenberg, J R -- Steinman, L -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1731-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology and Neurological Sciences, Beckman Center for Molecular Medicine, B002, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721059" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Encephalomyelitis, Autoimmune, ; Experimental/genetics/immunology/metabolism/pathology ; Expressed Sequence Tags ; Gene Deletion ; *Gene Expression Profiling ; Gene Library ; Humans ; Inflammation/genetics/immunology/metabolism/pathology ; Interferon-gamma/genetics/metabolism ; Interleukin-10/genetics/metabolism ; Lymphocyte Activation ; Mice ; Mice, Knockout ; Multiple Sclerosis/*genetics/immunology/*metabolism/pathology ; Oligonucleotide Array Sequence Analysis ; Osteopontin ; RNA, Messenger/genetics/metabolism ; Rats ; Sialoglycoproteins/deficiency/genetics/*metabolism ; Spinal Cord/metabolism ; Th1 Cells/immunology
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    Autoimmune dilated cardiomyopathy in PD-1 receptor-deficient mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: Dilated cardiomyopathy is a severe pathology of the heart with poorly understood etiology. Disruption of the gene encoding the negative immunoregulatory receptor PD-1 in BALB/c mice, but not in BALB/c RAG-2-/- mice, caused dilated cardiomyopathy with severely impaired contraction and sudden death by congestive heart failure. Affected hearts showed diffuse deposition of immunoglobulin G (IgG) on the surface of cardiomyocytes. All of the affected PD-1-/- mice exhibited high-titer circulating IgG autoantibodies reactive to a 33-kilodalton protein expressed specifically on the surface of cardiomyocytes. These results indicate that PD-1 may be an important factor contributing to the prevention of autoimmune diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nishimura, H -- Okazaki, T -- Tanaka, Y -- Nakatani, K -- Hara, M -- Matsumori, A -- Sasayama, S -- Mizoguchi, A -- Hiai, H -- Minato, N -- Honjo, T -- New York, N.Y. -- Science. 2001 Jan 12;291(5502):319-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Yoshida Konoe-cho, Sakyo, Kyoto, 606-8501, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11209085" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Surface/genetics/*physiology ; Apoptosis Regulatory Proteins ; Autoantibodies/*analysis/blood ; Autoantigens/chemistry/immunology ; Autoimmune Diseases/*immunology/pathology/physiopathology ; Cardiomyopathy, Dilated/*immunology/pathology/physiopathology ; Complement C3/analysis ; Echocardiography ; Heart Failure/etiology ; Immunoglobulin G/analysis/blood ; Membrane Proteins/chemistry/immunology ; Mice ; Mice, Inbred BALB C ; Molecular Weight ; Myocardium/*immunology/pathology ; Programmed Cell Death 1 Receptor
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    Immunology. Long live the mature B cell--a baffling mystery resolved (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-15
    Description: What determines whether transitional B cells newly emerged from the bone marrow will differentiate further to become mature, long-lived, circulating B lymphocytes? In a Perspective, Waldschmidt and Noelle discuss new findings showing that the TNF family ligand BAFF and its receptor BAFF-R are crucial for selecting transitional B cells into the mature B cell pool (Thompson et al., Schiemann et al.).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waldschmidt, T J -- Noelle, R J -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2012-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Iowa College of Medicine, Iowa City, IA 52242, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11557866" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Cell Activating Factor ; B-Cell Activation Factor Receptor ; B-Cell Maturation Antigen ; B-Lymphocytes/*immunology/metabolism/*physiology ; Bone Marrow Cells ; Cell Survival ; Immunoglobulin M/biosynthesis ; Ligands ; Membrane Proteins/*metabolism ; Mice ; Mice, Inbred A ; Mice, Knockout ; Mice, Mutant Strains ; Receptors, Tumor Necrosis Factor/genetics/*metabolism ; Signal Transduction ; Spleen/cytology/immunology ; Transmembrane Activator and CAML Interactor Protein ; Tumor Necrosis Factor-alpha/*metabolism
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    The mitochondrion: is it central to apoptosis? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finkel, E -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):624-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11330312" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis/*physiology ; Caenorhabditis elegans/physiology ; Caspase Inhibitors ; Caspases/*metabolism ; Cell Nucleus/metabolism ; Cells, Cultured ; Cysteine Proteinase Inhibitors/pharmacology ; Cytochrome c Group/metabolism ; Enzyme Activation ; Humans ; Intracellular Membranes/physiology ; Mice ; Mice, Knockout ; Mitochondria/*physiology ; Nuclear Proteins/metabolism ; Permeability ; Proteins/metabolism
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    Microbiology. Cracking Listeria's password (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finlay, B B -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1665-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biotechnology Laboratory, University of British Columbia, Vancouver, V6T 1Z3, British Columbia, Canada. bfinlay@interchange.ubc.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11387462" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Bacterial Proteins/chemistry/*metabolism ; Bacterial Translocation ; Cadherins/chemistry/genetics/*metabolism ; Carrier Proteins/genetics ; Cell Line ; *Disease Models, Animal ; Fatty Acid-Binding Proteins ; Guinea Pigs ; Humans ; Intestinal Mucosa/cytology/metabolism/*microbiology ; Intestine, Small/cytology/metabolism/microbiology ; Listeria monocytogenes/metabolism/*pathogenicity ; Listeriosis/*microbiology ; Mice ; Mice, Transgenic ; *Neoplasm Proteins ; *Nerve Tissue Proteins ; Promoter Regions, Genetic ; *Tumor Suppressor Proteins ; Virulence
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    Molecular analysis of commensal host-microbial relationships in the intestine (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-07
    Description: Human beings contain complex societies of indigenous microbes, yet little is known about how resident bacteria shape our physiology. We colonized germ-free mice with Bacteroides thetaiotaomicron, a prominent component of the normal mouse and human intestinal microflora. Global intestinal transcriptional responses to colonization were observed with DNA microarrays, and the cellular origins of selected responses were established by laser-capture microdissection. The results reveal that this commensal bacterium modulates expression of genes involved in several important intestinal functions, including nutrient absorption, mucosal barrier fortification, xenobiotic metabolism, angiogenesis, and postnatal intestinal maturation. These findings provide perspectives about the essential nature of the interactions between resident microorganisms and their hosts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hooper, L V -- Wong, M H -- Thelin, A -- Hansson, L -- Falk, P G -- Gordon, J I -- DK30292/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 Feb 2;291(5505):881-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Pharmacology, Washington University School of Medicine, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11157169" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteroides/genetics/growth & development/*physiology ; Bifidobacterium/growth & development/physiology ; Colony Count, Microbial ; Cornified Envelope Proline-Rich Proteins ; Escherichia coli/growth & development/physiology ; Gastrointestinal Motility/genetics ; Gene Expression Profiling ; *Gene Expression Regulation ; Germ-Free Life ; Humans ; Ileum/cytology/immunology/*metabolism/*microbiology ; Intestinal Absorption/genetics ; Intestinal Mucosa/cytology/immunology/*metabolism/*microbiology ; Male ; Matched-Pair Analysis ; Membrane Proteins/genetics/metabolism ; Mice ; Mice, Inbred Strains ; Mutation ; Neovascularization, Physiologic/genetics ; Oligonucleotide Array Sequence Analysis ; Protein Precursors/genetics/metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Xenobiotics/metabolism
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    Phosphorylation-dependent ubiquitination of cyclin E by the SCFFbw7 ubiquitin ligase (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-05
    Description: Cyclin E binds and activates the cyclin-dependent kinase Cdk2 and catalyzes the transition from the G1 phase to the S phase of the cell cycle. The amount of cyclin E protein present in the cell is tightly controlled by ubiquitin-mediated proteolysis. Here we identify the ubiquitin ligase responsible for cyclin E ubiquitination as SCFFbw7 and demonstrate that it is functionally conserved in yeast, flies, and mammals. Fbw7 associates specifically with phosphorylated cyclin E, and SCFFbw7 catalyzes cyclin E ubiquitination in vitro. Depletion of Fbw7 leads to accumulation and stabilization of cyclin E in vivo in human and Drosophila melanogaster cells. Multiple F-box proteins contribute to cyclin E stability in yeast, suggesting an overlap in SCF E3 ligase specificity that allows combinatorial control of cyclin E degradation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koepp, D M -- Schaefer, L K -- Ye, X -- Keyomarsi, K -- Chu, C -- Harper, J W -- Elledge, S J -- R01 AG011085/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 5;294(5540):173-7. Epub 2001 Aug 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX, 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11533444" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Breast Neoplasms/genetics/metabolism ; *CDC2-CDC28 Kinases ; *Cell Cycle ; Cell Cycle Proteins/chemistry/genetics/*metabolism ; Cell Line ; Cyclin E/*metabolism ; Cyclin-Dependent Kinase 2 ; Cyclin-Dependent Kinases/metabolism ; Drosophila Proteins ; Drosophila melanogaster ; *F-Box Proteins ; Humans ; Mice ; Molecular Sequence Data ; Peptide Synthases/chemistry/genetics/*metabolism ; Phosphorylation ; Protein-Serine-Threonine Kinases/metabolism ; RNA, Double-Stranded ; Recombinant Fusion Proteins/metabolism ; SKP Cullin F-Box Protein Ligases ; Saccharomyces cerevisiae/genetics/metabolism ; Saccharomyces cerevisiae Proteins ; Sequence Alignment ; Transfection ; Tumor Cells, Cultured ; *Ubiquitin-Protein Ligases ; Ubiquitins/*metabolism
    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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    Ventroptin: a BMP-4 antagonist expressed in a double-gradient pattern in the retina (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-07
    Description: In the visual system, the establishment of the anteroposterior and dorsoventral axes in the retina and tectum during development is important for topographic retinotectal projection. We identified chick Ventroptin, an antagonist of bone morphogenetic protein 4 (BMP-4), which is mainly expressed in the ventral retina, not only with a ventral high-dorsal low gradient but also with a nasal high-temporal low gradient at later stages. Misexpression of Ventroptin altered expression patterns of several topographic genes in the retina and projection of the retinal axons to the tectum along both axes. Thus, the topographic retinotectal projection appears to be specified by the double-gradient molecule Ventroptin along the two axes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sakuta, H -- Suzuki, R -- Takahashi, H -- Kato, A -- Shintani, T -- Iemura Si -- Yamamoto, T S -- Ueno, N -- Noda, M -- New York, N.Y. -- Science. 2001 Jul 6;293(5527):111-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Neurobiology, National Institute for Basic Biology, The Graduate University for Advanced Studies, 38 Nishigonaka, Myodaiji-cho, Okazaki 444-8585, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11441185" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amino Acid Sequence ; Animals ; Bone Morphogenetic Protein 4 ; Bone Morphogenetic Proteins/*antagonists & inhibitors/genetics/metabolism ; Chick Embryo ; Cloning, Molecular ; Electroporation ; Embryo, Nonmammalian/cytology/metabolism ; Eye Proteins/chemistry/genetics/*metabolism ; *Gene Expression Regulation, Developmental ; Gene Library ; Humans ; In Situ Hybridization ; Mice ; Microinjections ; Molecular Sequence Data ; *Morphogenesis ; Nerve Tissue Proteins ; Precipitin Tests ; Protein Binding ; Protein Isoforms/chemistry/genetics/metabolism ; RNA, Messenger/analysis/genetics ; Retina/*embryology/*metabolism ; Sequence Alignment ; Surface Plasmon Resonance ; Xenopus Proteins ; Xenopus laevis/embryology/metabolism
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    Wording blurs survey on animal protection (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garrison, H H -- New York, N.Y. -- Science. 2001 Feb 9;291(5506):986-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11232582" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Welfare/*legislation & jurisprudence ; Animals ; *Animals, Laboratory ; Birds ; Mice ; Rats ; *Research Personnel ; Surveys and Questionnaires ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Stereotyped position of local synaptic targets in neocortex (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-04
    Description: The microcircuitry of the mammalian neocortex remains largely unknown. Although the neocortex could be composed of scores of precise circuits, an alternative possibility is that local connectivity is probabilistic or even random. To examine the precision and degree of determinism in the neocortical microcircuitry, we used optical probing to reconstruct microcircuits in layer 5 from mouse primary visual cortex. We stimulated "trigger" cells, isolated from a homogenous population of corticotectal pyramidal neurons, while optically detecting "follower" neurons directly driven by the triggers. Followers belonged to a few selective anatomical classes with stereotyped physiological and synaptic responses. Moreover, even the position of the followers appeared determined across animals. Our data reveal precisely organized cortical microcircuits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kozloski, J -- Hamzei-Sichani, F -- Yuste, R -- New York, N.Y. -- Science. 2001 Aug 3;293(5531):868-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Columbia University, New York, NY 10027, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11486089" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Axons/physiology/ultrastructure ; Brain Mapping ; Dendrites/physiology/ultrastructure ; Excitatory Postsynaptic Potentials ; Image Processing, Computer-Assisted ; Interneurons/*cytology/physiology ; Mice ; Mice, Inbred C57BL ; Neural Pathways/anatomy & histology/physiology ; Patch-Clamp Techniques ; Pyramidal Cells/*cytology/physiology ; Superior Colliculi/cytology ; Synapses/*physiology/ultrastructure ; *Synaptic Transmission ; Visual Cortex/*cytology/*physiology
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    In silico mapping of mouse quantitative trait loci (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chesler, E J -- Rodriguez-Zas, S L -- Mogil, J S -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2423.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology and, Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11752534" target="_blank"〉PubMed〈/a〉
    Keywords: *Algorithms ; Animals ; Chromosome Mapping/*methods ; Genetic Linkage ; Genotype ; Mice ; Mice, Inbred Strains ; Phenotype ; Polymorphism, Single Nucleotide ; *Quantitative Trait, Heritable ; Statistics as Topic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Cell biology. Fusion without SNAREs? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-03
    Description: Highly orchestrated molecular rearrangements are required for two membranes to fuse, as happens, for example, during neurotransmitter release into the synapse. In an elegant Perspective, Scales et al. discuss two studies (Schoch et al., Wang et al.) that shed new light on the protein interactions involved in membrane fusion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scales, S J -- Finley, M F -- Scheller, R H -- New York, N.Y. -- Science. 2001 Nov 2;294(5544):1015-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genentech Inc., South San Francisco, CA 94080, USA. sscales@gene.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11691976" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/metabolism ; Calcium Signaling ; *Calcium-Binding Proteins ; Catecholamines/metabolism ; Cell Membrane/metabolism ; Cells, Cultured ; Electrophysiology ; *Membrane Fusion ; Membrane Glycoproteins/*physiology ; Membrane Proteins/*physiology ; Mice ; Nerve Tissue Proteins/*physiology ; Neurotransmitter Agents/metabolism ; PC12 Cells ; Phospholipids/metabolism ; Protein Isoforms ; R-SNARE Proteins ; Rats ; SNARE Proteins ; Secretory Vesicles/*metabolism ; Synapses/physiology ; Synaptic Transmission ; Synaptic Vesicles/*metabolism ; Synaptotagmins ; *Vesicular Transport Proteins
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    TRP-PLIK, a bifunctional protein with kinase and ion channel activities (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-13
    Description: We cloned and characterized a protein kinase and ion channel, TRP-PLIK. As part of the long transient receptor potential channel subfamily implicated in control of cell division, it is a protein that is both an ion channel and a protein kinase. TRP-PLIK phosphorylated itself, displayed a wide tissue distribution, and, when expressed in CHO-K1 cells, constituted a nonselective, calcium-permeant, 105-picosiemen, steeply outwardly rectifying conductance. The zinc finger containing alpha-kinase domain was functional. Inactivation of the kinase activity by site-directed mutagenesis and the channel's dependence on intracellular adenosine triphosphate (ATP) demonstrated that the channel's kinase activity is essential for channel function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Runnels, L W -- Yue, L -- Clapham, D E -- New York, N.Y. -- Science. 2001 Feb 9;291(5506):1043-7. Epub 2001 Jan 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Cardiology, Department of Neurobiology, Harvard Medical School, 1309 Enders Building, 320 Longwood Avenue, Children's Hospital, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11161216" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; CHO Cells ; Calcium/metabolism ; Catalytic Domain ; Cations/metabolism ; Cell Line ; Cricetinae ; DNA, Complementary ; Electric Conductivity ; Humans ; Ion Channels/chemistry/*genetics/*metabolism ; *Membrane Proteins ; Mice ; Molecular Sequence Data ; Mutation ; Myelin Basic Protein/metabolism ; Patch-Clamp Techniques ; Phosphorylation ; Protein Kinases/chemistry/*genetics/*metabolism ; Protein-Serine-Threonine Kinases ; Rats ; Recombinant Fusion Proteins/chemistry/metabolism ; TRPM Cation Channels ; Transfection ; Two-Hybrid System Techniques ; Type C Phospholipases/metabolism
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    Genetics. Can organisms speed their own evolution? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chicurel, M -- New York, N.Y. -- Science. 2001 Jun 8;292(5523):1824-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11397928" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; *Biological Evolution ; DNA Damage ; DNA Polymerase beta/*metabolism ; DNA, Bacterial/biosynthesis ; Escherichia coli/*genetics/physiology ; Fungal Proteins/chemistry/metabolism ; Genes, Bacterial ; Genetic Variation ; Mice ; *Mutation ; Peptide Termination Factors ; Prions/chemistry/metabolism ; SOS Response (Genetics) ; *Saccharomyces cerevisiae Proteins ; Yeasts/*genetics/growth & development/metabolism
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    Regulation of clock and NPAS2 DNA binding by the redox state of NAD cofactors (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-07
    Description: Clock:BMAL1 and NPAS2:BMAL1 are heterodimeric transcription factors that control gene expression as a function of the light-dark cycle. Although built to fluctuate at or near a 24-hour cycle, the clock can be entrained by light, activity, or food. Here we show that the DNA-binding activity of the Clock:BMAL1 and NPAS2:BMAL1 heterodimers is regulated by the redox state of nicotinamide adenine dinucleotide (NAD) cofactors in a purified system. The reduced forms of the redox cofactors, NAD(H) and NADP(H), strongly enhance DNA binding of the Clock:BMAL1 and NPAS2:BMAL1 heterodimers, whereas the oxidized forms inhibit. These observations raise the possibility that food, neuronal activity, or both may entrain the circadian clock by direct modulation of cellular redox state.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rutter, J -- Reick, M -- Wu, L C -- McKnight, S L -- 1RO1MH59388/MH/NIMH NIH HHS/ -- NIH5-T32-GM08-291-12/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 20;293(5529):510-4. Epub 2001 Jul 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Texas-Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9152, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11441146" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Aryl Hydrocarbon Receptor Nuclear Translocator ; Basic Helix-Loop-Helix Transcription Factors ; Biological Clocks ; CLOCK Proteins ; Cell Line ; Circadian Rhythm ; DNA/*metabolism ; *DNA-Binding Proteins ; Dimerization ; Helix-Loop-Helix Motifs ; Humans ; L-Lactate Dehydrogenase/genetics/metabolism ; Mice ; NAD/*metabolism/pharmacology ; NADP/*metabolism/pharmacology ; Nerve Tissue Proteins/chemistry/*metabolism ; Oxidation-Reduction ; *Receptors, Aryl Hydrocarbon ; Recombinant Proteins/metabolism ; Trans-Activators/chemistry/*metabolism ; Transcription Factors/chemistry/*metabolism
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    Requirement of tissue-selective TBP-associated factor TAFII105 in ovarian development (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-15
    Description: Transcription factor TFIID, composed of TBP and TAFII subunits, is a central component of the RNA polymerase II machinery. Here, we report that the tissue-selective TAFII105 subunit of TFIID is essential for proper development and function of the mouse ovary. Female mice lacking TAFII105 are viable but infertile because of a defect in folliculogenesis correlating with restricted expression of TAFII105 in the granulosa cells of the ovarian follicle. Gene expression profiling has uncovered a defective inhibin-activin signaling pathway in TAFII105-deficient ovaries. Together, these studies suggest that TAFII105 mediates the transcription of a subset of genes required for proper folliculogenesis in the ovary and establishes TAFII105 as a cell type-specific component of the mammalian transcriptional machinery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freiman, R N -- Albright, S R -- Zheng, S -- Sha, W C -- Hammer, R E -- Tjian, R -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2084-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, Howard Hughes Medical Institute, University of California at Berkeley, Berkeley, CA 94720-3204, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11557891" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA-Binding Proteins/genetics/*metabolism ; Down-Regulation ; Female ; Gene Expression Profiling ; Gene Expression Regulation, Developmental ; Granulosa Cells/metabolism/*physiology ; In Situ Hybridization ; Infertility, Female ; Male ; Mice ; Mice, Knockout ; Oligonucleotide Array Sequence Analysis ; Organ Size ; Organ Specificity ; Ovarian Follicle/*growth & development ; Ovary/cytology/growth & development/metabolism/*physiology ; Ovulation ; Protein Subunits ; Signal Transduction ; *TATA-Binding Protein Associated Factors ; Transcription Factor TFIID ; Transcription Factors/genetics/*metabolism ; Transcription Factors, TFII/metabolism ; *Transcription, Genetic
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    Epigenetic instability in ES cells and cloned mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-07
    Description: Cloning by nuclear transfer (NT) is an inefficient process in which most clones die before birth and survivors often display growth abnormalities. In an effort to correlate gene expression with survival and fetal overgrowth, we have examined imprinted gene expression in both mice cloned by nuclear transfer and in the embryonic stem (ES) cell donor populations from which they were derived. The epigenetic state of the ES cell genome was found to be extremely unstable. Similarly, variation in imprinted gene expression was observed in most cloned mice, even in those derived from ES cells of the same subclone. Many of the animals survived to adulthood despite widespread gene dysregulation, indicating that mammalian development may be rather tolerant to epigenetic aberrations of the genome. These data imply that even apparently normal cloned animals may have subtle abnormalities in gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Humpherys, D -- Eggan, K -- Akutsu, H -- Hochedlinger, K -- Rideout , W M 3rd -- Biniszkiewicz, D -- Yanagimachi, R -- Jaenisch, R -- 5-R35-CA44339/CA/NCI NIH HHS/ -- R01-CA84198/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 6;293(5527):95-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Department of Biology, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11441181" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Birth Weight ; Cell Nucleus/*genetics ; Cesarean Section ; *Cloning, Organism/methods ; Congenital Abnormalities/genetics ; DNA Methylation ; Embryo Loss/genetics ; Embryo Transfer ; Embryo, Mammalian/*cytology/metabolism ; Female ; Fetal Death/genetics ; *Gene Expression Regulation, Developmental ; Gene Silencing ; Genomic Imprinting/*genetics ; Mice ; Oocytes/metabolism ; Placenta/metabolism ; Placentation ; Polyploidy ; Pregnancy ; RNA, Messenger/genetics/metabolism ; Respiration ; Stem Cells/*cytology/*metabolism ; Survival Rate
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    Insulin resistance and a diabetes mellitus-like syndrome in mice lacking the protein kinase Akt2 (PKB beta) (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-06-02
    Description: Glucose homeostasis depends on insulin responsiveness in target tissues, most importantly, muscle and liver. The critical initial steps in insulin action include phosphorylation of scaffolding proteins and activation of phosphatidylinositol 3-kinase. These early events lead to activation of the serine-threonine protein kinase Akt, also known as protein kinase B. We show that mice deficient in Akt2 are impaired in the ability of insulin to lower blood glucose because of defects in the action of the hormone on liver and skeletal muscle. These data establish Akt2 as an essential gene in the maintenance of normal glucose homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cho, H -- Mu, J -- Kim, J K -- Thorvaldsen, J L -- Chu, Q -- Crenshaw, E B 3rd -- Kaestner, K H -- Bartolomei, M S -- Shulman, G I -- Birnbaum, M J -- GM07229/GM/NIGMS NIH HHS/ -- P30 19525/PHS HHS/ -- P30 DK50306/DK/NIDDK NIH HHS/ -- R01 DK040936/DK/NIDDK NIH HHS/ -- R01 DK56886/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1728-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11387480" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Glucose/metabolism ; Deoxyglucose/metabolism ; Diabetes Mellitus, Type 2/*metabolism ; Female ; Gene Targeting ; Glucose/*metabolism ; Glucose Clamp Technique ; Glucose Tolerance Test ; Homeostasis ; Insulin/administration & dosage/blood/*metabolism ; *Insulin Resistance/genetics/physiology ; Islets of Langerhans/cytology/physiology ; Liver/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Muscle, Skeletal/enzymology/metabolism ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins/*genetics/*metabolism ; Proto-Oncogene Proteins c-akt ; Signal Transduction
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    Immunology. Antigen presentation--losing its shine in the absence of GILT (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watts, C -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1294-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK. c.watts@dundee.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701917" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antigen Presentation ; Antigen-Presenting Cells/enzymology/*immunology ; Disulfides/metabolism ; Endosomes/enzymology ; Epitopes/chemistry/immunology ; Hydrogen-Ion Concentration ; Mice ; Muramidase/chemistry/immunology/metabolism ; Oxidation-Reduction ; Oxidoreductases/chemistry/genetics/*metabolism ; T-Lymphocytes/immunology
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    Apoptosis. Death of a monopoly? (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hunot, S -- Flavell, R A -- New York, N.Y. -- Science. 2001 May 4;292(5518):865-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Immunobiology and the Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11341280" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Apoptosis Inducing Factor ; Blastocyst/cytology/metabolism ; Caspases/metabolism ; Cytochrome c Group/metabolism ; DNA Fragmentation ; *Embryonic and Fetal Development ; Flavoproteins/chemistry/genetics/*metabolism ; Gene Targeting ; Growth Substances/metabolism ; Intracellular Membranes/metabolism ; Membrane Proteins/chemistry/genetics/*metabolism ; Mice ; Mitochondria/*metabolism ; Morphogenesis ; Signal Transduction ; Stem Cells/cytology/metabolism
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    CTCF, a candidate trans-acting factor for X-inactivation choice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-18
    Description: In mammals, X-inactivation silences one of two female X chromosomes. Silencing depends on the noncoding gene, Xist (inactive X-specific transcript), and is blocked by the antisense gene, Tsix. Deleting the choice/imprinting center in Tsix affects X-chromosome selection. Here, we identify the insulator and transcription factor, CTCF, as a candidate trans-acting factor for X-chromosome selection. The choice/imprinting center contains tandem CTCF binding sites that function in an enhancer-blocking assay. In vitro binding is reduced by CpG methylation and abolished by including non-CpG methylation. We postulate that Tsix and CTCF together establish a regulatable epigenetic switch for X-inactivation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chao, Wendy -- Huynh, Khanh D -- Spencer, Rebecca J -- Davidow, Lance S -- Lee, Jeannie T -- New York, N.Y. -- Science. 2002 Jan 11;295(5553):345-7. Epub 2001 Dec 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular Biology, Massachusetts General Hospital, Department of Genetics, Harvard Medical School, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11743158" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antisense Elements (Genetics) ; Binding Sites ; CpG Islands ; DNA Methylation ; DNA-Binding Proteins/genetics/*metabolism ; *Dosage Compensation, Genetic ; Enhancer Elements, Genetic ; *Gene Silencing ; Genomic Imprinting ; HeLa Cells ; Humans ; Mice ; Models, Genetic ; RNA, Long Noncoding ; RNA, Untranslated/genetics ; *Repressor Proteins ; Transcription Factors/genetics/*metabolism ; X Chromosome/*genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 83
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    Neuroscience. Immune molecules prune neural links (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Helmuth, L -- New York, N.Y. -- Science. 2000 Dec 15;290(5499):2051.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11187818" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/growth & development/*physiology ; Geniculate Bodies/growth & development/physiology ; Hippocampus/physiology ; Histocompatibility Antigens Class I/genetics/*physiology ; Long-Term Potentiation ; Memory/physiology ; Mice ; Mice, Knockout ; Neural Pathways ; *Neuronal Plasticity ; Neurons/*physiology ; Receptors, Antigen, T-Cell/genetics/physiology ; Synapses/*physiology ; Visual Pathways/physiology
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    Microbiology. Listeria enlists host in its attack (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, E -- New York, N.Y. -- Science. 2000 Nov 3;290(5493):914-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11184728" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bacterial Toxins/chemistry/genetics/toxicity ; Heat-Shock Proteins/*chemistry/genetics/*metabolism/toxicity ; Hemolysin Proteins ; Humans ; Intracellular Membranes/metabolism ; Listeria monocytogenes/chemistry/metabolism/*pathogenicity ; Macrophages/microbiology ; Mice ; Phagosomes/metabolism/microbiology
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  • 85
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    Poll shows researchers favor lab animal protection (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Plous, S -- Herzog, H A -- New York, N.Y. -- Science. 2000 Oct 27;290(5492):711.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11184195" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Welfare/*legislation & jurisprudence ; Animals ; *Animals, Laboratory ; Birds ; Mice ; Rats ; *Research Personnel ; Surveys and Questionnaires ; United States ; United States Department of Agriculture/legislation & jurisprudence
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  • 86
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    Genetics. Reprogramming X inactivation (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: Inactivation of one of the two X chromosomes occurs in all cells of female adult mice so that genes are expressed from only one X chromosome. In a Perspective, Clerc and Avner describe an elegant series of experiments in mouse embryos cloned from adult and embryonic female cell nuclei (Eggan et al.) that reveal how the inactivation state of the X chromosomes is reprogrammed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clerc, P -- Avner, P -- New York, N.Y. -- Science. 2000 Nov 24;290(5496):1518-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉G|n|tique Mol|culaire Murine, Institut Pasteur, Paris 75015, France. pclerc@pasteur.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11185510" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cloning, Organism ; DNA Methylation ; *Dosage Compensation, Genetic ; Embryo, Mammalian/*metabolism ; Embryonic and Fetal Development ; Female ; *Genomic Imprinting ; Histones/metabolism ; Male ; Mice ; Nuclear Transfer Techniques ; Placenta/metabolism ; RNA, Long Noncoding ; RNA, Untranslated/genetics/metabolism ; Transcription Factors/genetics/metabolism ; Transgenes ; X Chromosome/*genetics/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 87
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    Animal welfare. Research groups win delay in rules (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malakoff, D -- New York, N.Y. -- Science. 2000 Oct 13;290(5490):243-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11183366" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Welfare/*legislation & jurisprudence ; Animals ; *Animals, Laboratory ; Birds ; Mice ; Rats ; Research/*legislation & jurisprudence/standards ; United States ; United States Department of Agriculture/legislation & jurisprudence
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 88
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    Doing immunology on a chip (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hagmann, M -- New York, N.Y. -- Science. 2000 Oct 6;290(5489):82-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11183155" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/immunology/metabolism ; *Gene Expression Profiling ; Humans ; Immune System Diseases/diagnosis/*genetics/immunology ; Immune Tolerance ; Immunity, Cellular/*genetics ; Infection/diagnosis/genetics ; Lymphocytes/*immunology/metabolism ; Mice ; Mice, Mutant Strains ; *Oligonucleotide Array Sequence Analysis ; T-Lymphocytes, Helper-Inducer/immunology/physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 89
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    Cell biology. Stem cells: new excitement, persistent questions (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-24
    Description: On pages 1775 and 1779, independent research teams describe experiments in which bone marrow cells became neuronlike cells in the brain, providing new evidence for the versatility of adult stem cells. But ample uncertainties must be resolved before such results can be translated into therapeutics. The most important next step, say several stem cell researchers, is to identify the molecular processes that underlie the impressive feats of stem cells, as many of the purported breakthroughs are simply observations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, G -- New York, N.Y. -- Science. 2000 Dec 1;290(5497):1672-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11186385" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomarkers/analysis ; Bone Marrow Transplantation ; Brain/*cytology ; Cell Differentiation ; Embryo, Mammalian/cytology ; Female ; Humans ; Male ; Mice ; Nerve Tissue Proteins/analysis ; Neurons/chemistry/*cytology ; *Stem Cell Transplantation ; Stem Cells/*cytology
    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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  • 90
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    Circadian rhythms. Chronobiology--reducing time (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schibler, U -- Ripperger, J A -- Brown, S A -- New York, N.Y. -- Science. 2001 Jul 20;293(5529):437-8. Epub 2001 Jul 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Sciences II, University of Geneva, CH-1211 Geneva 4, Switzerland. ueli.schibler@molbio.unige.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11441150" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Biological Clocks/*physiology ; CLOCK Proteins ; Cell Cycle Proteins ; Circadian Rhythm/*physiology ; Cryptochromes ; DNA/metabolism ; Dimerization ; *Drosophila Proteins ; Electron Transport ; *Eye Proteins ; Feedback ; Flavoproteins/metabolism ; Mice ; NAD/*metabolism ; Nerve Tissue Proteins/genetics/*metabolism ; Nuclear Proteins/metabolism ; Oxidation-Reduction ; Period Circadian Proteins ; *Photoreceptor Cells, Invertebrate ; Prosencephalon/metabolism ; Receptors, G-Protein-Coupled ; Suprachiasmatic Nucleus/physiology ; Trans-Activators/*metabolism ; Transcription Factors/genetics/*metabolism
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  • 91
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    An essential role for BAFF in the normal development of B cells through a BCMA-independent pathway (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-08-18
    Description: The B cell activating factor BAFF (BlyS/TALL-1/zTNF4) is a tumor necrosis factor (TNF)-related ligand that promotes B cell survival and binds to three receptors (BCMA, TACI, and the recently described BAFF-R). Here we report an absolute requirement for BAFF in normal B cell development. Examination of secondary lymphoid organs from BAFF-deficient mice revealed an almost complete loss of follicular and marginal zone B lymphocytes. In contrast, mice lacking BCMA had normal-appearing B lymphocyte compartments. BAFF therefore plays a crucial role in B cell development and can function through receptors other than BCMA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schiemann, B -- Gommerman, J L -- Vora, K -- Cachero, T G -- Shulga-Morskaya, S -- Dobles, M -- Frew, E -- Scott, M L -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2111-4. Epub 2001 Aug 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biogen, 14 Cambridge Center, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509691" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/analysis ; B-Cell Activating Factor ; B-Cell Maturation Antigen ; B-Lymphocyte Subsets/cytology/immunology/physiology ; B-Lymphocytes/cytology/immunology/*physiology ; Bone Marrow Cells/cytology ; Cell Separation ; Cell Survival ; Flow Cytometry ; Immunoglobulins/blood ; Leukopoiesis ; Lymph Nodes/cytology/immunology ; Lymphocyte Count ; Lymphoid Tissue/cytology/immunology ; Membrane Proteins/deficiency/genetics/*physiology ; Mice ; Mice, Inbred A ; Mice, Knockout ; Phenotype ; Receptors, Tumor Necrosis Factor/deficiency/genetics/*physiology ; Signal Transduction ; Spleen/cytology/immunology ; Thymus Gland/cytology/immunology ; Tumor Necrosis Factor-alpha/deficiency/genetics/*physiology
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  • 92
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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
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    Metabolic regulation of brain Abeta by neprilysin (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-26
    Description: Amyloid beta peptide (Abeta), the pathogenic agent of Alzheimer's disease (AD), is a physiological metabolite in the brain. We examined the role of neprilysin, a candidate Abeta-degrading peptidase, in the metabolism using neprilysin gene-disrupted mice. Neprilysin deficiency resulted in defects both in the degradation of exogenously administered Abeta and in the metabolic suppression of the endogenous Abeta levels in a gene dose-dependent manner. The regional levels of Abeta in the neprilysin-deficient mouse brain were in the distinct order of hippocampus, cortex, thalamus/striatum, and cerebellum, where hippocampus has the highest level and cerebellum the lowest, correlating with the vulnerability to Abeta deposition in brains of humans with AD. Our observations suggest that even partial down-regulation of neprilysin activity, which could be caused by aging, can contribute to AD development by promoting Abeta accumulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iwata, N -- Tsubuki, S -- Takaki, Y -- Shirotani, K -- Lu, B -- Gerard, N P -- Gerard, C -- Hama, E -- Lee, H J -- Saido, T C -- New York, N.Y. -- Science. 2001 May 25;292(5521):1550-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Proteolytic Neuroscience, RIKEN Brain Science Institute, Wako-shi 351-0198 Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11375493" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/metabolism ; Alzheimer Disease/etiology/genetics/metabolism ; Amyloid beta-Peptides/*metabolism ; Animals ; Brain/enzymology/*metabolism ; Chromatography, High Pressure Liquid ; Down-Regulation ; Enhancer Elements, Genetic ; Enzyme-Linked Immunosorbent Assay ; Gene Dosage ; Hippocampus/enzymology/metabolism ; Humans ; Membrane Proteins/genetics/metabolism ; Mice ; Mice, Knockout ; Mutation ; Neprilysin/genetics/*metabolism ; Neurons/enzymology ; Peptide Fragments/metabolism ; Presenilin-1 ; Response Elements ; Up-Regulation
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    Gene therapy. Gene gemisch cures sickle cell in mice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 2001 Dec 14;294(5550):2268.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11743172" target="_blank"〉PubMed〈/a〉
    Keywords: Anemia, Sickle Cell/genetics/*therapy ; Animals ; Gene Expression ; *Genetic Therapy ; *Genetic Vectors ; Globins/*genetics/metabolism ; HIV/genetics ; Hematopoietic Stem Cells/metabolism ; Humans ; Mice ; Mice, Transgenic ; Transfection ; Transgenes ; beta-Globins
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    Mechanisms underlying antigen-specific CD8+ T cell homeostasis (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wodarz, D -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):595.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540, USA. wodarz@ias.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11326087" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Bacterial/*immunology ; Cytotoxicity, Immunologic ; Homeostasis ; Immunodominant Epitopes ; Interferon-gamma/*physiology ; Listeria monocytogenes/immunology/physiology ; Listeriosis/*immunology/microbiology ; Lymphocyte Activation ; Mathematics ; Membrane Glycoproteins/*physiology ; Mice ; *Models, Immunological ; Perforin ; Pore Forming Cytotoxic Proteins ; T-Lymphocytes/*immunology
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  • 96
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    AAAS meeting. Stem cells make brain cells (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strauss, E -- New York, N.Y. -- Science. 2001 Mar 2;291(5509):1689-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11253187" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*cytology ; Cell Differentiation ; Dopamine/biosynthesis ; Embryo, Mammalian/*cytology ; Humans ; Mice ; Neurons/*cytology/enzymology ; Parkinson Disease/therapy ; Rats ; *Stem Cell Transplantation ; Stem Cells/*cytology
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    Infectious diseases. Hard-won advances spark excitement about hepatitis C (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-10-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crabb, C -- New York, N.Y. -- Science. 2001 Oct 19;294(5542):506-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11641482" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antiviral Agents/therapeutic use ; Clinical Trials as Topic ; *Disease Models, Animal ; *Hepacivirus/growth & development/immunology/physiology ; *Hepatitis C/epidemiology/immunology/therapy/virology ; Hepatitis C, Chronic/epidemiology/immunology/therapy/virology ; Humans ; Immunity, Innate ; Interferons ; Mice ; Mice, Mutant Strains ; Mice, SCID ; *Viral Hepatitis Vaccines/immunology/therapeutic use ; Virus Cultivation ; Virus Replication
    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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  • 98
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    An RNA ligase essential for RNA editing and survival of the bloodstream form of Trypanosoma brucei (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-17
    Description: RNA editing in trypanosomes occurs by a series of enzymatic steps that are catalyzed by a macromolecular complex. The TbMP52 protein is shown to be a component of this complex, to have RNA ligase activity, and to be one of two adenylatable proteins in the complex. Regulated repression of TbMP52 blocks editing, which shows that it is a functional component of the editing complex. This repression is lethal in bloodforms of the parasite, indicating that editing is essential in the mammalian stage of the life cycle. The editing complex, which is present in all kinetoplastid parasites, may thus be a chemotherapeutic target.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schnaufer, A -- Panigrahi, A K -- Panicucci, B -- Igo, R P Jr -- Wirtz, E -- Salavati, R -- Stuart, K -- AI14102/AI/NIAID NIH HHS/ -- GM42188/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 16;291(5511):2159-62. Epub 2001 Feb 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Seattle Biomedical Research Institute, Seattle, WA 98109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11251122" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Down-Regulation ; Gene Targeting ; Genes, Protozoan ; Ligases/chemistry/*genetics/*metabolism ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Parasitemia/parasitology ; Phosphorus-Oxygen Lyases/chemistry/*genetics/*metabolism ; Protozoan Proteins/chemistry/genetics/metabolism ; *RNA Editing ; RNA, Messenger/genetics/metabolism ; RNA, Protozoan/genetics/metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Sequence Alignment ; Transfection ; Trypanosoma brucei brucei/enzymology/*genetics/growth & development ; 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
    Published by American Association for the Advancement of Science (AAAS)
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  • 99
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    Human genome. NIH considers paying to use private database (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-03-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 2001 Jan 12;291(5502):223-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11253203" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Databases, Factual/*economics ; *Fees and Charges ; *Genome ; *Genome, Human ; *Human Genome Project ; Humans ; Mice ; *National Institutes of Health (U.S.) ; Private Sector ; Sequence Analysis, DNA ; United States
    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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  • 100
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    Immunology. Tampering with the immune system (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwartzberg, P L -- New York, N.Y. -- Science. 2001 Jul 13;293(5528):228-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA. pams@nhgri.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11452106" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Presenting Cells/immunology ; Apoptosis ; Autoimmune Diseases/enzymology/*immunology ; Cell Division ; Immune System/*physiology ; *Intercellular Signaling Peptides and Proteins ; Ligands ; Lymphocyte Activation ; Lymphocytes/immunology ; Mice ; Neural Cell Adhesion Molecules/deficiency/metabolism ; Oncogene Proteins/deficiency/metabolism ; Protein S/metabolism ; Proteins/metabolism ; *Proto-Oncogene Proteins ; Receptor Protein-Tyrosine Kinases/deficiency/*immunology/metabolism ; Signal Transduction
    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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