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  • 1
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    Characterization of the piRNA complex from rat testes (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-06-17
    Beschreibung: Small noncoding RNAs regulate processes essential for cell growth and development, including mRNA degradation, translational repression, and transcriptional gene silencing (TGS). During a search for candidate mammalian factors for TGS, we purified a complex that contains small RNAs and Riwi, the rat homolog to human Piwi. The RNAs, frequently 29 to 30 nucleotides in length, are called Piwi-interacting RNAs (piRNAs), 94% of which map to 100 defined (〈 or = 101 kb) genomic regions. Within these regions, the piRNAs generally distribute across only one genomic strand or distribute on two strands but in a divergent, nonoverlapping manner. Preparations of piRNA complex (piRC) contain rRecQ1, which is homologous to qde-3 from Neurospora, a gene implicated in silencing pathways. Piwi has been genetically linked to TGS in flies, and slicer activity cofractionates with the purified complex. These results are consistent with a gene-silencing role for piRC in mammals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lau, Nelson C -- Seto, Anita G -- Kim, Jinkuk -- Kuramochi-Miyagawa, Satomi -- Nakano, Toru -- Bartel, David P -- Kingston, Robert E -- New York, N.Y. -- Science. 2006 Jul 21;313(5785):363-7. Epub 2006 Jun 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Massachusetts General Hospital, 185 Cambridge Street, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16778019" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine Triphosphatases/isolation & purification/metabolism ; Animals ; Chromosomes, Mammalian ; Conserved Sequence ; DNA Helicases/isolation & purification/metabolism ; Gene Library ; Genome ; Male ; Mice ; Proteins/isolation & purification/*metabolism ; *RNA Interference ; RNA, Untranslated/chemistry/genetics/isolation & purification/*metabolism ; Rats ; Rats, Sprague-Dawley ; RecQ Helicases ; Ribonucleoproteins/chemistry/isolation & purification/*metabolism ; Testis/*chemistry ; Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 2
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    A clamping mechanism involved in SNARE-dependent exocytosis (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-06-24
    Beschreibung: During neurotransmitter release at the synapse, influx of calcium ions stimulates the release of neurotransmitter. However, the mechanism by which synaptic vesicle fusion is coupled to calcium has been unclear, despite the identification of both the core fusion machinery [soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE)] and the principal calcium sensor (synaptotagmin). Here, we describe what may represent a basic principle of the coupling mechanism: a reversible clamping protein (complexin) that can freeze the SNAREpin, an assembled fusion-competent intermediate en route to fusion. When calcium binds to the calcium sensor synaptotagmin, the clamp would then be released. SNARE proteins, and key regulators like synaptotagmin and complexin, can be ectopically expressed on the cell surface. Cells expressing such "flipped" synaptic SNAREs fuse constitutively, but when we coexpressed complexin, fusion was blocked. Adding back calcium triggered fusion from this intermediate in the presence of synaptotagmin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giraudo, Claudio G -- Eng, William S -- Melia, Thomas J -- Rothman, James E -- New York, N.Y. -- Science. 2006 Aug 4;313(5787):676-80. Epub 2006 Jun 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology and Cellular Biophysics, Columbia University, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16794037" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptor Proteins, Vesicular Transport ; Animals ; Calcium/metabolism ; Cell Membrane/metabolism ; *Exocytosis ; Glycosylphosphatidylinositols/metabolism ; HeLa Cells ; Humans ; Nerve Tissue Proteins/*metabolism ; Rats ; Recombinant Proteins/metabolism ; SNARE Proteins/*metabolism ; Synaptotagmin I/metabolism ; Synaptotagmins/metabolism ; Type C Phospholipases/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 3
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    A virulence locus of Pseudomonas aeruginosa encodes a protein secretion apparatus (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-06-10
    Beschreibung: Bacterial pathogens frequently use protein secretion to mediate interactions with their hosts. Here we found that a virulence locus (HSI-I) of Pseudomonas aeruginosa encodes a protein secretion apparatus. The apparatus assembled in discrete subcellular locations and exported Hcp1, a hexameric protein that forms rings with a 40 angstrom internal diameter. Regulatory patterns of HSI-I suggested that the apparatus functions during chronic infections. We detected Hcp1 in pulmonary secretions of cystic fibrosis (CF) patients and Hcp1-specific antibodies in their sera. Thus, HSI-I likely contributes to the pathogenesis of P. aeruginosa in CF patients. HSI-I-related loci are widely distributed among bacterial pathogens and may play a general role in mediating host interactions.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2800167/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2800167/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mougous, Joseph D -- Cuff, Marianne E -- Raunser, Stefan -- Shen, Aimee -- Zhou, Min -- Gifford, Casey A -- Goodman, Andrew L -- Joachimiak, Grazyna -- Ordonez, Claudia L -- Lory, Stephen -- Walz, Thomas -- Joachimiak, Andrzej -- Mekalanos, John J -- AI21451/AI/NIAID NIH HHS/ -- AI26289/AI/NIAID NIH HHS/ -- GM074942/GM/NIGMS NIH HHS/ -- GM62414/GM/NIGMS NIH HHS/ -- P50 GM062414/GM/NIGMS NIH HHS/ -- P50 GM062414-02/GM/NIGMS NIH HHS/ -- U54 GM074942/GM/NIGMS NIH HHS/ -- U54 GM074942-04S2/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Jun 9;312(5779):1526-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16763151" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bacterial Proteins/*genetics/physiology/secretion ; Crystallography, X-Ray ; Cystic Fibrosis/complications/microbiology ; Humans ; Models, Molecular ; Protein Conformation ; Pseudomonas Infections/complications/microbiology ; Pseudomonas aeruginosa/*genetics/pathogenicity ; Rats ; Recombinant Fusion Proteins ; Sequence Alignment ; Virulence/genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    Lhx2 maintains stem cell character in hair follicles (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-07-01
    Beschreibung: During embryogenesis, stem cells are set aside to fuel the postnatal hair cycle and repair the epidermis after injury. To define how hair follicle stem cells are specified and maintained in an undifferentiated state, we developed a strategy to isolate and transcriptionally profile embryonic hair progenitors in mice. We identified Lhx2 as a transcription factor positioned downstream of signals necessary to specify hair follicle stem cells, but upstream from signals required to drive activated stem cells to terminally differentiate. Using gain- and loss-of-function studies, we uncovered a role for Lhx2 in maintaining the growth and undifferentiated properties of hair follicle progenitors.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2405918/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2405918/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rhee, Horace -- Polak, Lisa -- Fuchs, Elaine -- R01 AR031737/AR/NIAMS NIH HHS/ -- R01 AR031737-24/AR/NIAMS NIH HHS/ -- R01 AR050452/AR/NIAMS NIH HHS/ -- R01 AR050452-04/AR/NIAMS NIH HHS/ -- R01-AR050452/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Jun 30;312(5782):1946-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Rockefeller University, 1230 York Avenue, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16809539" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Differentiation ; Cell Lineage ; Cell Proliferation ; Epidermis/cytology/embryology ; Female ; Gene Expression Profiling ; Gene Expression Regulation, Developmental ; Hair/embryology/growth & development ; Hair Follicle/*cytology/embryology/physiology ; Homeodomain Proteins/genetics/*physiology ; LIM-Homeodomain Proteins ; Male ; Mice ; Mice, Knockout ; Mice, Transgenic ; Morphogenesis ; Oligonucleotide Array Sequence Analysis ; Signal Transduction ; Skin Transplantation ; Stem Cells/*physiology ; Transcription Factors/genetics/*physiology ; Up-Regulation
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
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    American Society for Cell Biology. Sprayed-on growth factors guide stem cells (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-12-23
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leslie, Mitch -- New York, N.Y. -- Science. 2006 Dec 22;314(5807):1865.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17185579" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bone Morphogenetic Proteins/*pharmacology ; Bone and Bones/*cytology ; Cell Differentiation ; Cell Lineage ; Cells, Cultured ; Extracellular Matrix ; Myoblasts/cytology ; Rats ; Stem Cells/*cytology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Evolution of hormone-receptor complexity by molecular exploitation (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-04-08
    Beschreibung: According to Darwinian theory, complexity evolves by a stepwise process of elaboration and optimization under natural selection. Biological systems composed of tightly integrated parts seem to challenge this view, because it is not obvious how any element's function can be selected for unless the partners with which it interacts are already present. Here we demonstrate how an integrated molecular system-the specific functional interaction between the steroid hormone aldosterone and its partner the mineralocorticoid receptor-evolved by a stepwise Darwinian process. Using ancestral gene resurrection, we show that, long before the hormone evolved, the receptor's affinity for aldosterone was present as a structural by-product of its partnership with chemically similar, more ancient ligands. Introducing two amino acid changes into the ancestral sequence recapitulates the evolution of present-day receptor specificity. Our results indicate that tight interactions can evolve by molecular exploitation-recruitment of an older molecule, previously constrained for a different role, into a new functional complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bridgham, Jamie T -- Carroll, Sean M -- Thornton, Joseph W -- F32-GM074398/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Apr 7;312(5770):97-101.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Ecology and Evolutionary Biology, University of Oregon, Eugene, OR 97403, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16601189" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aldosterone/chemistry/*metabolism ; Amino Acid Substitution ; Animals ; Bayes Theorem ; Binding Sites ; Desoxycorticosterone/metabolism ; *Evolution, Molecular ; Gene Duplication ; Hagfishes ; Hydrocortisone/metabolism ; Lampreys ; Ligands ; Mutation ; Perciformes ; Phylogeny ; Rats ; Receptors, Glucocorticoid/chemistry/genetics/metabolism ; Receptors, Mineralocorticoid/chemistry/*genetics/*metabolism ; Receptors, Steroid/chemistry/*genetics/*metabolism ; Skates (Fish)
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    Immunology. Restless T cells sniff and go (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-09-30
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mustelin, Tomas -- New York, N.Y. -- Science. 2006 Sep 29;313(5795):1902-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program on Inflammatory Disease Research, Infectious and Inflammatory Disease Center, and Program of Signal Transduction, Cancer Center, Burnham Institute for Medical Research, La Jolla, CA 92037, USA. tmustelin@burnham.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17008518" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigen Presentation ; Antigens, CD ; Antigens, CD28/metabolism ; Antigens, CD80/metabolism ; Antigens, CD86/metabolism ; Antigens, Differentiation/genetics/*physiology ; *Autoimmunity ; CTLA-4 Antigen ; Cell Adhesion ; Cell Movement ; Dendritic Cells/immunology ; Humans ; Integrins/physiology ; Ligands ; Lymph Nodes/*immunology ; Lymphocyte Activation ; Mice ; Receptors, Antigen, T-Cell/immunology/metabolism ; Signal Transduction ; T-Lymphocytes/immunology/*physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Cortex is driven by weak but synchronously active thalamocortical synapses (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-06-17
    Beschreibung: Sensory stimuli reach the brain via the thalamocortical projection, a group of axons thought to be among the most powerful in the neocortex. Surprisingly, these axons account for only approximately 15% of synapses onto cortical neurons. The thalamocortical pathway might thus achieve its effectiveness via high-efficacy thalamocortical synapses or via amplification within cortical layer 4. In rat somatosensory cortex, we measured in vivo the excitatory postsynaptic potential evoked by a single synaptic connection and found that thalamocortical synapses have low efficacy. Convergent inputs, however, are both numerous and synchronous, and intracortical amplification is not required. Our results suggest a mechanism of cortical activation by which thalamic input alone can drive cortex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bruno, Randy M -- Sakmann, Bert -- New York, N.Y. -- Science. 2006 Jun 16;312(5780):1622-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Physiology, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany. bruno@mpimf-heidelberg.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16778049" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Action Potentials ; Animals ; Axons/physiology ; Dendrites/physiology ; Electric Stimulation ; Excitatory Postsynaptic Potentials ; Membrane Potentials ; Neural Pathways ; Neurons/*physiology ; Rats ; Rats, Wistar ; Somatosensory Cortex/cytology/*physiology ; Synapses/*physiology ; *Synaptic Transmission ; Thalamus/cytology/*physiology ; Vibrissae/innervation/physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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    Cell signaling. A new way to burn fat (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-06-24
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Neels, Jaap G -- Olefsky, Jerrold M -- New York, N.Y. -- Science. 2006 Jun 23;312(5781):1756-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0673, USA. jolefsky@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16794069" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetyl-CoA Carboxylase/antagonists & inhibitors/*metabolism ; Adipocytes/metabolism ; Adipose Tissue/*metabolism ; Animals ; Cell Cycle Proteins/*metabolism ; Energy Intake ; Energy Metabolism ; Enzyme Activation ; Fasting ; Fatty Acids/metabolism ; Hepatocytes/metabolism ; Insulin/physiology ; Insulin Resistance ; *Lipid Metabolism ; Lipogenesis ; Liver/metabolism ; Malonyl Coenzyme A/metabolism ; Mice ; Models, Biological ; Nuclear Proteins/*metabolism ; Obesity/therapy ; Oxidation-Reduction ; Phosphorylation ; Proto-Oncogene Proteins c-akt/antagonists & inhibitors/metabolism ; Signal Transduction ; Ubiquitin/metabolism ; Ubiquitin-Protein Ligases/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 10
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    Ca2+ entry through plasma membrane IP3 receptors (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-07-15
    Beschreibung: Inositol 1,4,5-trisphosphate receptors (IP3Rs) release calcium ions, Ca2+, from intracellular stores, but their roles in mediating Ca2+ entry are unclear. IP3 stimulated opening of very few (1.9 +/- 0.2 per cell) Ca2+-permeable channels in whole-cell patch-clamp recording of DT40 chicken or mouse B cells. Activation of the B cell receptor (BCR) in perforated-patch recordings evoked the same response. IP3 failed to stimulate intracellular or plasma membrane (PM) channels in cells lacking IP3R. Expression of IP3R restored both responses. Mutations within the pore affected the conductances of IP3-activated PM and intracellular channels similarly. An impermeant pore mutant abolished BCR-evoked Ca2+ signals, and PM IP3Rs were undetectable. After introduction of an alpha-bungarotoxin binding site near the pore, PM IP3Rs were modulated by extracellular alpha-bungarotoxin. IP(3)Rs are unusual among endoplasmic reticulum proteins in being also functionally expressed at the PM, where very few IP3Rs contribute substantially to the Ca2+ entry evoked by the BCR.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dellis, Olivier -- Dedos, Skarlatos G -- Tovey, Stephen C -- Taufiq-Ur-Rahman -- Dubel, Stefan J -- Taylor, Colin W -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2006 Jul 14;313(5784):229-33.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Tennis Court Road, Cambridge, CB2 1PD, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16840702" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; B-Lymphocytes/metabolism ; Bungarotoxins/metabolism/pharmacology ; Calcium/*metabolism ; Calcium Channels/genetics/*metabolism ; *Calcium Signaling ; Cell Membrane/*metabolism ; Cells, Cultured ; Chickens ; Electric Conductivity ; Endoplasmic Reticulum/metabolism ; Inositol 1,4,5-Trisphosphate/metabolism ; Inositol 1,4,5-Trisphosphate Receptors ; *Ion Channel Gating ; Mice ; Nuclear Envelope/metabolism ; Patch-Clamp Techniques ; Point Mutation ; Rats ; Receptors, Antigen, B-Cell/metabolism ; Receptors, Cytoplasmic and Nuclear/antagonists & inhibitors/genetics/*metabolism ; Transfection
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 11
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    Cell biology. Purinergic chemotaxis (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-12-16
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Linden, Joel -- New York, N.Y. -- Science. 2006 Dec 15;314(5806):1689-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Virginia, Charlottesville, VA 22908, USA. jlinden@virginia.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17170280" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine/metabolism ; Adenosine Monophosphate/metabolism ; Adenosine Triphosphate/*metabolism ; Animals ; Apyrase/pharmacology ; *Autocrine Communication ; Blood Platelets/metabolism ; Cell Membrane/metabolism ; *Chemotaxis, Leukocyte/drug effects ; Endothelial Cells/metabolism ; Mice ; Models, Biological ; N-Formylmethionine Leucyl-Phenylalanine ; Neutrophils/drug effects/*metabolism/physiology ; Receptor, Adenosine A3/metabolism ; Receptors, Purinergic/*metabolism ; Receptors, Purinergic P2/metabolism ; Receptors, Purinergic P2Y2 ; Respiratory Burst/drug effects ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 12
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    Losartan, an AT1 antagonist, prevents aortic aneurysm in a mouse model of Marfan syndrome (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-04-08
    Beschreibung: Aortic aneurysm and dissection are manifestations of Marfan syndrome (MFS), a disorder caused by mutations in the gene that encodes fibrillin-1. Selected manifestations of MFS reflect excessive signaling by the transforming growth factor-beta (TGF-beta) family of cytokines. We show that aortic aneurysm in a mouse model of MFS is associated with increased TGF-beta signaling and can be prevented by TGF-beta antagonists such as TGF-beta-neutralizing antibody or the angiotensin II type 1 receptor (AT1) blocker, losartan. AT1 antagonism also partially reversed noncardiovascular manifestations of MFS, including impaired alveolar septation. These data suggest that losartan, a drug already in clinical use for hypertension, merits investigation as a therapeutic strategy for patients with MFS and has the potential to prevent the major life-threatening manifestation of this disorder.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1482474/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1482474/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Habashi, Jennifer P -- Judge, Daniel P -- Holm, Tammy M -- Cohn, Ronald D -- Loeys, Bart L -- Cooper, Timothy K -- Myers, Loretha -- Klein, Erin C -- Liu, Guosheng -- Calvi, Carla -- Podowski, Megan -- Neptune, Enid R -- Halushka, Marc K -- Bedja, Djahida -- Gabrielson, Kathleen -- Rifkin, Daniel B -- Carta, Luca -- Ramirez, Francesco -- Huso, David L -- Dietz, Harry C -- K08 HL067056/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2006 Apr 7;312(5770):117-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16601194" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenergic beta-Antagonists/administration & dosage/therapeutic use ; Angiotensin II Type 1 Receptor Blockers/administration & dosage/*therapeutic use ; Animals ; Antibodies/immunology ; Aorta/pathology ; Aortic Aneurysm/etiology/*prevention & control ; *Disease Models, Animal ; Elastic Tissue/pathology ; Female ; Losartan/administration & dosage/*therapeutic use ; Lung/pathology ; Lung Diseases/drug therapy/pathology ; Marfan Syndrome/complications/*drug therapy/metabolism/pathology ; Mice ; Microfilament Proteins/genetics ; Mutation ; Neutralization Tests ; Pregnancy ; Pregnancy Complications/drug therapy ; Propranolol/administration & dosage/therapeutic use ; Pulmonary Alveoli/pathology ; Receptor, Angiotensin, Type 1/metabolism ; Signal Transduction ; Transforming Growth Factor beta/antagonists & inhibitors/immunology/*metabolism
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 13
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    Neuroscience. Neuron, know thy neighbor (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-03-18
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DiCicco-Bloom, Emanuel -- New York, N.Y. -- Science. 2006 Mar 17;311(5767):1560-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience and Cell Biology/Pediatrics (Neurology), University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA. diciccem@umdnj.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16543446" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adherens Junctions/*physiology/ultrastructure ; Animals ; Brain/cytology/*embryology ; *Cell Adhesion ; Cell Count ; Cell Death ; Cell Differentiation ; Cell Movement ; Cell Proliferation ; Central Nervous System/cytology/embryology ; Cytoskeleton/physiology ; Hedgehog Proteins ; Hyperplasia ; Mice ; Mutation ; Neurons/cytology/*physiology ; Signal Transduction ; Stem Cells/cytology/physiology ; Trans-Activators/*metabolism ; alpha Catenin/genetics/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 14
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    ATP release guides neutrophil chemotaxis via P2Y2 and A3 receptors (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-12-16
    Beschreibung: Cells must amplify external signals to orient and migrate in chemotactic gradient fields. We find that human neutrophils release adenosine triphosphate (ATP) from the leading edge of the cell surface to amplify chemotactic signals and direct cell orientation by feedback through P2Y2 nucleotide receptors. Neutrophils rapidly hydrolyze released ATP to adenosine that then acts via A3-type adenosine receptors, which are recruited to the leading edge, to promote cell migration. Thus, ATP release and autocrine feedback through P2Y2 and A3 receptors provide signal amplification, controlling gradient sensing and migration of neutrophils.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Yu -- Corriden, Ross -- Inoue, Yoshiaki -- Yip, Linda -- Hashiguchi, Naoyuki -- Zinkernagel, Annelies -- Nizet, Victor -- Insel, Paul A -- Junger, Wolfgang G -- GM-60475/GM/NIGMS NIH HHS/ -- GM-66232/GM/NIGMS NIH HHS/ -- PR043034/PR/OCPHP CDC HHS/ -- R01 GM-51477/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Dec 15;314(5806):1792-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgery, University of California San Diego, San Diego, CA 92103, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17170310" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine/metabolism/pharmacology ; Adenosine A3 Receptor Agonists ; Adenosine A3 Receptor Antagonists ; Adenosine Triphosphate/analogs & derivatives/*metabolism/pharmacology ; Animals ; *Autocrine Communication ; Cell Membrane/metabolism ; *Chemotaxis, Leukocyte/drug effects ; Cytoplasmic Granules/metabolism ; HL-60 Cells ; Humans ; Hydrolysis ; Mice ; Mice, Knockout ; Neutrophils/drug effects/metabolism/*physiology ; Purinergic P2 Receptor Antagonists ; Receptor, Adenosine A3/*metabolism ; Receptors, Purinergic P2/*metabolism ; Receptors, Purinergic P2Y2 ; Signal Transduction ; Suramin/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 15
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    Lamin A-dependent nuclear defects in human aging (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-04-29
    Beschreibung: Mutations in the nuclear structural protein lamin A cause the premature aging syndrome Hutchinson-Gilford progeria (HGPS). Whether lamin A plays any role in normal aging is unknown. We show that the same molecular mechanism responsible for HGPS is active in healthy cells. Cell nuclei from old individuals acquire defects similar to those of HGPS patient cells, including changes in histone modifications and increased DNA damage. Age-related nuclear defects are caused by sporadic use, in healthy individuals, of the same cryptic splice site in lamin A whose constitutive activation causes HGPS. Inhibition of this splice site reverses the nuclear defects associated with aging. These observations implicate lamin A in physiological aging.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1855250/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1855250/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scaffidi, Paola -- Misteli, Tom -- Z01 BC010309-07/BC/NCI NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2006 May 19;312(5776):1059-63. Epub 2006 Apr 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Cancer Institute (NCI), NIH, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16645051" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aged, 80 and over ; Aging/*physiology ; Cell Line ; Cell Nucleus/pathology ; DNA Damage ; Exons ; Histones/metabolism ; Humans ; Lamin Type A/genetics/*physiology ; Progeria/genetics/pathology ; RNA Splicing/genetics ; Signal Transduction ; Tumor Suppressor Protein p53/genetics/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 16
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    Genetic variant BDNF (Val66Met) polymorphism alters anxiety-related behavior (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-07
    Beschreibung: A common single-nucleotide polymorphism in the brain-derived neurotrophic factor (BDNF) gene, a methionine (Met) substitution for valine (Val) at codon 66 (Val66Met), is associated with alterations in brain anatomy and memory, but its relevance to clinical disorders is unclear. We generated a variant BDNF mouse (BDNF(Met/Met)) that reproduces the phenotypic hallmarks in humans with the variant allele. BDNF(Met) was expressed in brain at normal levels, but its secretion from neurons was defective. When placed in stressful settings, BDNF(Met/Met) mice exhibited increased anxiety-related behaviors that were not normalized by the antidepressant, fluoxetine. A variant BDNF may thus play a key role in genetic predispositions to anxiety and depressive disorders.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1880880/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1880880/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Zhe-Yu -- Jing, Deqiang -- Bath, Kevin G -- Ieraci, Alessandro -- Khan, Tanvir -- Siao, Chia-Jen -- Herrera, Daniel G -- Toth, Miklos -- Yang, Chingwen -- McEwen, Bruce S -- Hempstead, Barbara L -- Lee, Francis S -- MH060478/MH/NIMH NIH HHS/ -- MH068850/MH/NIMH NIH HHS/ -- NS052819/NS/NINDS NIH HHS/ -- NS30687/NS/NINDS NIH HHS/ -- R01 NS052819/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2006 Oct 6;314(5796):140-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry, Weill Medical College of Cornell University, New York, NY 10021, USA. zheyuchen@sdu.edu.cn〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17023662" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Animals ; Anxiety/drug therapy/*genetics ; Behavior, Animal ; Brain-Derived Neurotrophic Factor/*genetics/*physiology ; Conditioning (Psychology) ; Dendrites/ultrastructure ; Dentate Gyrus/cytology ; Fear ; Fluoxetine/administration & dosage/pharmacology ; Hippocampus/anatomy & histology/metabolism ; Memory ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Motor Activity ; Neurons/cytology/metabolism ; Organ Size ; *Polymorphism, Single Nucleotide ; Rats ; Rats, Sprague-Dawley ; Serotonin Uptake Inhibitors/administration & dosage/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 17
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    S6K1- and betaTRCP-mediated degradation of PDCD4 promotes protein translation and cell growth (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-21
    Beschreibung: The tumor suppressor programmed cell death protein 4 (PDCD4) inhibits the translation initiation factor eIF4A, an RNA helicase that catalyzes the unwinding of secondary structure at the 5' untranslated region (5'UTR) of messenger RNAs (mRNAs). In response to mitogens, PDCD4 was rapidly phosphorylated on Ser67 by the protein kinase S6K1 and subsequently degraded via the ubiquitin ligase SCF(betaTRCP). Expression in cultured cells of a stable PDCD4 mutant that is unable to bind betaTRCP inhibited translation of an mRNA with a structured 5'UTR, resulted in smaller cell size, and slowed down cell cycle progression. We propose that regulated degradation of PDCD4 in response to mitogens allows efficient protein synthesis and consequently cell growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dorrello, N Valerio -- Peschiaroli, Angelo -- Guardavaccaro, Daniele -- Colburn, Nancy H -- Sherman, Nicholas E -- Pagano, Michele -- R01-CA76584/CA/NCI NIH HHS/ -- R01-GM57587/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Oct 20;314(5798):467-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, NYU Cancer Institute, New York University School of Medicine, 550 First Avenue, MSB 599, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17053147" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 5' Untranslated Regions ; Amino Acid Motifs ; Apoptosis Regulatory Proteins/chemistry/genetics/*metabolism ; Binding Sites ; Cell Line ; Cell Line, Tumor ; *Cell Proliferation ; Cell Size ; Eukaryotic Initiation Factor-4A/antagonists & inhibitors/metabolism ; Eukaryotic Initiation Factor-4F/metabolism ; Eukaryotic Initiation Factor-4G/metabolism ; Eukaryotic Initiation Factors/metabolism ; Humans ; Mitogens/pharmacology ; Phosphorylation ; *Protein Biosynthesis ; RNA, Small Interfering ; RNA-Binding Proteins/chemistry/genetics/*metabolism ; Ribosomal Protein S6 Kinases/metabolism ; SKP Cullin F-Box Protein Ligases/*metabolism ; Serine/metabolism ; Serum ; Signal Transduction ; beta-Transducin Repeat-Containing Proteins/genetics/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 18
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    Applied physics. High-speed atomic force microscopy (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hansma, Paul K -- Schitter, Georg -- Fantner, Georg E -- Prater, Craig -- GM 65354/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Oct 27;314(5799):601-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, University of California, Santa Barbara, CA 93106, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17068247" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Algorithms ; Animals ; Collagen/ultrastructure ; Electronics ; *Microscopy, Atomic Force/instrumentation/methods ; Rats ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 19
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    Neuroscience. Neurons find strength through synchrony in the brain (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-06-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alonso, Jose-Manuel -- New York, N.Y. -- Science. 2006 Jun 16;312(5780):1604-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, State University of New York College of Optometry, New York, NY 10036, USA. jalonso@sunyopt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16778042" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Excitatory Postsynaptic Potentials ; Mice ; Neural Pathways ; Neurons/*physiology ; Rats ; Somatosensory Cortex/*physiology ; Synapses/*physiology ; *Synaptic Transmission ; Thalamus/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 20
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    A critical role for the innate immune signaling molecule IRAK-4 in T cell activation (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-04-01
    Beschreibung: IRAK-4 is a protein kinase that is pivotal in mediating signals for innate immune responses. Here, we report that IRAK-4 signaling is also essential for eliciting adaptive immune responses. Thus, in the absence of IRAK-4, in vivo T cell responses were significantly impaired. Upon T cell receptor stimulation, IRAK-4 is recruited to T cell lipid rafts, where it induces downstream signals, including protein kinase C activation through the association with Zap70. This signaling pathway was found to be required for optimal activation of nuclear factor kappaB. Our findings suggest that T cells use this critical regulator of innate immunity for the development of acquired immunity, suggesting that IRAK-4 may be involved in direct signal cross talk between the two systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suzuki, Nobutaka -- Suzuki, Shinobu -- Millar, Douglas G -- Unno, Midori -- Hara, Hiromitsu -- Calzascia, Thomas -- Yamasaki, Sho -- Yokosuka, Tadashi -- Chen, Nien-Jung -- Elford, Alisha R -- Suzuki, Jun-Ichiro -- Takeuchi, Arata -- Mirtsos, Christine -- Bouchard, Denis -- Ohashi, Pamela S -- Yeh, Wen-Chen -- Saito, Takashi -- New York, N.Y. -- Science. 2006 Mar 31;311(5769):1927-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Cell Signaling, RIKEN Research Center for Allergy and Immunology, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16574867" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Enzyme Activation ; Immunity, Innate ; Interleukin-1 Receptor-Associated Kinases ; Isoenzymes/metabolism ; *Lymphocyte Activation ; Membrane Microdomains/enzymology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Transgenic ; NF-kappa B/metabolism ; Phosphotransferases (Alcohol Group Acceptor)/genetics/*metabolism ; Protein Kinase C/metabolism ; Receptors, Antigen, T-Cell/immunology ; Signal Transduction ; T-Lymphocytes/*immunology ; ZAP-70 Protein-Tyrosine Kinase/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 21
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    Alterations in 5-HT1B receptor function by p11 in depression-like states (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-01-10
    Beschreibung: The pathophysiology of depression remains enigmatic, although abnormalities in serotonin signaling have been implicated. We have found that the serotonin 1B receptor [5-hydroxytryptamine (5-HT1B) receptor] interacts with p11. p11 increases localization of 5-HT1B receptors at the cell surface. p11 is increased in rodent brains by antidepressants or electroconvulsive therapy, but decreased in an animal model of depression and in brain tissue from depressed patients. Overexpression of p11 increases 5-HT1B receptor function in cells and recapitulates certain behaviors seen after antidepressant treatment in mice. p11 knockout mice exhibit a depression-like phenotype and have reduced responsiveness to 5-HT1B receptor agonists and reduced behavioral reactions to an antidepressant.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Svenningsson, Per -- Chergui, Karima -- Rachleff, Ilan -- Flajolet, Marc -- Zhang, Xiaoqun -- El Yacoubi, Malika -- Vaugeois, Jean-Marie -- Nomikos, George G -- Greengard, Paul -- DA10044/DA/NIDA NIH HHS/ -- MH40899/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2006 Jan 6;311(5757):77-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular and Cellular Neuroscience, Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16400147" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Aged ; Animals ; Annexin A2/genetics/*metabolism ; Antidepressive Agents/pharmacology ; Behavior, Animal/drug effects ; Brain/drug effects/metabolism ; Cell Membrane/metabolism ; Depression/genetics/*metabolism ; Electroconvulsive Therapy ; Female ; Humans ; Male ; Mice ; Mice, Knockout ; Mice, Transgenic ; Middle Aged ; Neurons/metabolism ; Rats ; Receptor, Serotonin, 5-HT1B/*metabolism ; S100 Proteins/genetics/*metabolism ; Serotonin/metabolism/physiology ; Signal Transduction ; Two-Hybrid System Techniques
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 22
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    Chemistry. Toward molecular imaging with xenon MRI (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-21
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Driehuys, Bastiaan -- New York, N.Y. -- Science. 2006 Oct 20;314(5798):432-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Radiology, Center for In Vivo Microscopy, Duke University Medical Center, Durham, NC 27710, USA. driehuys@orion.duhs.duke.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17053138" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Atherosclerosis/diagnosis/physiopathology ; *Biosensing Techniques ; Humans ; Lung/anatomy & histology ; Magnetic Resonance Imaging/*methods ; Magnetic Resonance Spectroscopy ; Rats ; Sensitivity and Specificity ; *Xenon Isotopes
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 23
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    A genome-wide association study identifies IL23R as an inflammatory bowel disease gene (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-28
    Beschreibung: The inflammatory bowel diseases Crohn's disease and ulcerative colitis are common, chronic disorders that cause abdominal pain, diarrhea, and gastrointestinal bleeding. To identify genetic factors that might contribute to these disorders, we performed a genome-wide association study. We found a highly significant association between Crohn's disease and the IL23R gene on chromosome 1p31, which encodes a subunit of the receptor for the proinflammatory cytokine interleukin-23. An uncommon coding variant (rs11209026, c.1142G〉A, p.Arg381Gln) confers strong protection against Crohn's disease, and additional noncoding IL23R variants are independently associated. Replication studies confirmed IL23R associations in independent cohorts of patients with Crohn's disease or ulcerative colitis. These results and previous studies on the proinflammatory role of IL-23 prioritize this signaling pathway as a therapeutic target in inflammatory bowel disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4410764/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4410764/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duerr, Richard H -- Taylor, Kent D -- Brant, Steven R -- Rioux, John D -- Silverberg, Mark S -- Daly, Mark J -- Steinhart, A Hillary -- Abraham, Clara -- Regueiro, Miguel -- Griffiths, Anne -- Dassopoulos, Themistocles -- Bitton, Alain -- Yang, Huiying -- Targan, Stephan -- Datta, Lisa Wu -- Kistner, Emily O -- Schumm, L Philip -- Lee, Annette T -- Gregersen, Peter K -- Barmada, M Michael -- Rotter, Jerome I -- Nicolae, Dan L -- Cho, Judy H -- DK62413/DK/NIDDK NIH HHS/ -- DK62420/DK/NIDDK NIH HHS/ -- DK62422/DK/NIDDK NIH HHS/ -- DK62423/DK/NIDDK NIH HHS/ -- DK62429/DK/NIDDK NIH HHS/ -- DK62431/DK/NIDDK NIH HHS/ -- DK62432/DK/NIDDK NIH HHS/ -- P30 DK063491/DK/NIDDK NIH HHS/ -- P30 DK063491-019004/DK/NIDDK NIH HHS/ -- P30 DK063491-029004/DK/NIDDK NIH HHS/ -- P30 DK063491-039004/DK/NIDDK NIH HHS/ -- P30 DK063491-049004/DK/NIDDK NIH HHS/ -- U01 DK062420/DK/NIDDK NIH HHS/ -- U01 DK062422/DK/NIDDK NIH HHS/ -- U01 DK062423/DK/NIDDK NIH HHS/ -- U01 DK062429/DK/NIDDK NIH HHS/ -- U01 DK062432/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2006 Dec 1;314(5804):1461-3. Epub 2006 Oct 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, School of Medicine, University of Pittsburgh, University of Pittsburgh Medical Center Presbyterian, Mezzanine Level, C-Wing, 200 Lothrop Street, Pittsburgh, PA 15213, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17068223" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Case-Control Studies ; Chromosomes, Human, Pair 1/genetics ; Cohort Studies ; Colitis, Ulcerative/genetics ; Crohn Disease/*genetics ; Genetic Markers ; Genetic Predisposition to Disease ; Genetic Testing ; Genome, Human ; Haplotypes ; Humans ; Interleukin-23/metabolism ; Jews/genetics ; Linkage Disequilibrium ; *Polymorphism, Single Nucleotide ; Receptors, Interleukin/*genetics/physiology ; Signal Transduction
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 24
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    Excitatory effect of GABAergic axo-axonic cells in cortical microcircuits (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-01-18
    Beschreibung: Axons in the cerebral cortex receive synaptic input at the axon initial segment almost exclusively from gamma-aminobutyric acid-releasing (GABAergic) axo-axonic cells (AACs). The axon has the lowest threshold for action potential generation in neurons; thus, AACs are considered to be strategically placed inhibitory neurons controlling neuronal output. However, we found that AACs can depolarize pyramidal cells and can initiate stereotyped series of synaptic events in rat and human cortical networks because of a depolarized reversal potential for axonal relative to perisomatic GABAergic inputs. Excitation and signal propagation initiated by AACs is supported by the absence of the potassium chloride cotransporter 2 in the axon.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Szabadics, Janos -- Varga, Csaba -- Molnar, Gabor -- Olah, Szabolcs -- Barzo, Pal -- Tamas, Gabor -- N535915/PHS HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2006 Jan 13;311(5758):233-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Comparative Physiology, University of Szeged, Kozep fasor 52, Szeged, H-6726, Hungary.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16410524" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Action Potentials ; Animals ; Axons/*physiology ; Cerebral Cortex/*cytology/physiology ; Excitatory Postsynaptic Potentials ; Humans ; In Vitro Techniques ; Middle Aged ; Neural Inhibition ; Neurons/*physiology ; Pyramidal Cells/physiology ; Rats ; Rats, Wistar ; Symporters/metabolism ; gamma-Aminobutyric Acid/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 25
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    Checkpoint proteins control survival of the postmitotic cells in Caenorhabditis elegans (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-06-03
    Beschreibung: Checkpoints are evolutionarily conserved signaling mechanisms that arrest cell division and alter cellular stress resistance in response to DNA damage or stalled replication forks. To study the consequences of loss of checkpoint functions in whole animals, checkpoint genes were inactivated in the nematode C. elegans. We show that checkpoint proteins are not only essential for normal development but also determine adult somatic maintenance. Checkpoint proteins play a role in the survival of postmitotic adult cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2568993/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2568993/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olsen, Anders -- Vantipalli, Maithili C -- Lithgow, Gordon J -- AG21069/AG/NIA NIH HHS/ -- AG22868/AG/NIA NIH HHS/ -- NS050789-01/NS/NINDS NIH HHS/ -- R01 AG021069/AG/NIA NIH HHS/ -- R01 AG021069-04/AG/NIA NIH HHS/ -- R01 AG022868/AG/NIA NIH HHS/ -- R01 AG022868-04/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2006 Jun 2;312(5778):1381-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Buck Institute, 8001 Redwood Boulevard, Novato, CA 94945, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16741121" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptation, Physiological/genetics/physiology ; Animals ; Caenorhabditis elegans/cytology/growth & development/*physiology ; Caenorhabditis elegans Proteins/genetics/*physiology ; Cell Cycle Proteins/genetics/*physiology ; Cell Survival ; Heat-Shock Proteins/biosynthesis/genetics ; Mitosis/genetics/*physiology ; Mutation ; Protein Kinases/metabolism ; Schizosaccharomyces pombe Proteins ; Signal Transduction ; Stem Cells/cytology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 26
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    Conjunctive representation of position, direction, and velocity in entorhinal cortex (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-05-06
    Beschreibung: Grid cells in the medial entorhinal cortex (MEC) are part of an environment-independent spatial coordinate system. To determine how information about location, direction, and distance is integrated in the grid-cell network, we recorded from each principal cell layer of MEC in rats that explored two-dimensional environments. Whereas layer II was predominated by grid cells, grid cells colocalized with head-direction cells and conjunctive grid x head-direction cells in the deeper layers. All cell types were modulated by running speed. The conjunction of positional, directional, and translational information in a single MEC cell type may enable grid coordinates to be updated during self-motion-based navigation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sargolini, Francesca -- Fyhn, Marianne -- Hafting, Torkel -- McNaughton, Bruce L -- Witter, Menno P -- Moser, May-Britt -- Moser, Edvard I -- New York, N.Y. -- Science. 2006 May 5;312(5774):758-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for the Biology of Memory, Norwegian University of Science and Technology, 7489 Trondheim, Norway.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16675704" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Electrophysiology ; Entorhinal Cortex/*cytology/*physiology ; Exploratory Behavior ; Locomotion ; Male ; Nerve Net/*physiology ; Neurons/*physiology ; *Orientation ; Rats ; Rats, Long-Evans ; *Space Perception
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 27
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    Role of noradrenergic signaling by the nucleus tractus solitarius in mediating opiate reward (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-02-18
    Beschreibung: Norepinephrine (NE) is widely implicated in opiate withdrawal, but much less is known about its role in opiate-induced locomotion and reward. In mice lacking dopamine beta-hydroxylase (DBH), an enzyme critical for NE synthesis, we found that NE was necessary for morphine-induced conditioned place preference (CPP; a measure of reward) and locomotion. These deficits were rescued by systemic NE restoration. Viral restoration of DBH expression in the nucleus tractus solitarius, but not in the locus coeruleus, restored CPP for morphine. Morphine-induced locomotion was partially restored by DBH expression in either brain region. These data suggest that NE signaling by the nucleus tractus solitarius is necessary for morphine reward.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olson, Valerie G -- Heusner, Carrie L -- Bland, Ross J -- During, Matthew J -- Weinshenker, David -- Palmiter, Richard D -- New York, N.Y. -- Science. 2006 Feb 17;311(5763):1017-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16484499" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Behavior, Animal/drug effects ; Conditioning (Psychology) ; Dopamine beta-Hydroxylase/genetics/metabolism ; Droxidopa/pharmacology ; Locomotion/drug effects ; Locus Coeruleus/physiology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Morphine/*pharmacology ; Motor Activity/drug effects ; Norepinephrine/*physiology ; *Reward ; Signal Transduction ; Solitary Nucleus/*physiology ; *Synaptic Transmission
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 28
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    Cellular senescence in aging primates (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-02-04
    Beschreibung: The aging of organisms is characterized by a gradual functional decline of all organ systems. Mammalian somatic cells in culture display a limited proliferative life span, at the end of which they undergo an irreversible cell cycle arrest known as replicative senescence. Whether cellular senescence contributes to organismal aging has been controversial. We investigated telomere dysfunction, a recently discovered biomarker of cellular senescence, and found that the number of senescent fibroblasts increases exponentially in the skin of aging baboons, reaching 〉15% of all cells in very old individuals. In addition, the same cells contain activated ataxia-telangiectasia mutated kinase and heterochromatinized nuclei, confirming their senescent status.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Herbig, Utz -- Ferreira, Mark -- Condel, Laura -- Carey, Dee -- Sedivy, John M -- F32 CA099388/CA/NCI NIH HHS/ -- P01 HL028972/HL/NHLBI NIH HHS/ -- P20 RR015578/RR/NCRR NIH HHS/ -- P51 RR013986/RR/NCRR NIH HHS/ -- R01 AG016694/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2006 Mar 3;311(5765):1257. Epub 2006 Feb 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI 02903, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16456035" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aging/*physiology ; Animals ; Ataxia Telangiectasia Mutated Proteins ; Biomarkers ; Cell Aging/*physiology ; Cell Cycle Proteins/metabolism ; DNA Damage ; DNA Replication ; DNA-Binding Proteins/metabolism ; Dermis/cytology ; Female ; Fibroblasts/cytology/*physiology ; Heterochromatin/metabolism ; Male ; Oxidative Stress ; Papio/*physiology ; Protein-Serine-Threonine Kinases/metabolism ; Signal Transduction ; Telomere/physiology ; Tumor Suppressor Proteins/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 29
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    Developmental biology. The Turing model comes of molecular age (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-12-02
    Beschreibung: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4383235/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4383235/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maini, Philip K -- Baker, Ruth E -- Chuong, Cheng-Ming -- R01 AR042177/AR/NIAMS NIH HHS/ -- R01 AR042177-11/AR/NIAMS NIH HHS/ -- R01 AR042177-12/AR/NIAMS NIH HHS/ -- R01 AR047364/AR/NIAMS NIH HHS/ -- R01 AR047364-04/AR/NIAMS NIH HHS/ -- R01 AR047364-05/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Dec 1;314(5804):1397-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Mathematical Biology, University of Oxford, Oxford OX1 3LB, UK. maini@maths.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17138885" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Body Patterning ; Diffusion ; Hair Follicle/*growth & development/metabolism ; Intercellular Signaling Peptides and Proteins/*metabolism ; Mathematics ; Mice ; *Models, Biological ; Signal Transduction ; Wnt Proteins/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 30
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    Escherichia coli induces DNA double-strand breaks in eukaryotic cells (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-08-12
    Beschreibung: Transient infection of eukaryotic cells with commensal and extraintestinal pathogenic Escherichia coli of phylogenetic group B2 blocks mitosis and induces megalocytosis. This trait is linked to a widely spread genomic island that encodes giant modular nonribosomal peptide and polyketide synthases. Contact with E. coli expressing this gene cluster causes DNA double-strand breaks and activation of the DNA damage checkpoint pathway, leading to cell cycle arrest and eventually to cell death. Discovery of hybrid peptide-polyketide genotoxins in E. coli will change our view on pathogenesis and commensalism and open new biotechnological applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nougayrede, Jean-Philippe -- Homburg, Stefan -- Taieb, Frederic -- Boury, Michele -- Brzuszkiewicz, Elzbieta -- Gottschalk, Gerhard -- Buchrieser, Carmen -- Hacker, Jorg -- Dobrindt, Ulrich -- Oswald, Eric -- New York, N.Y. -- Science. 2006 Aug 11;313(5788):848-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉INRA, UMR1225, Ecole Nationale Veterinaire de Toulouse, Toulouse F-31076, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16902142" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Ataxia Telangiectasia Mutated Proteins ; Cell Cycle ; Cell Cycle Proteins/metabolism ; Cell Death ; Cell Line ; Cell Nucleus/chemistry ; Cytotoxins/*metabolism ; DNA/analysis ; *DNA Damage ; DNA-Binding Proteins/metabolism ; Escherichia coli/genetics/*pathogenicity/*physiology ; G2 Phase ; *Genomic Islands ; HeLa Cells ; Histones/metabolism ; Humans ; Intestinal Mucosa/cytology/microbiology ; Molecular Sequence Data ; Mutagenesis ; Mutagens/*metabolism ; Peptides/*metabolism ; Phosphorylation ; Polyketide Synthases/genetics ; Protein-Serine-Threonine Kinases/metabolism ; Rats ; Signal Transduction ; Tumor Suppressor Proteins/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 31
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    An architectural framework that may lie at the core of the postsynaptic density (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-01-28
    Beschreibung: The postsynaptic density (PSD) is a complex assembly of proteins associated with the postsynaptic membrane that organizes neurotransmitter receptors, signaling pathways, and regulatory elements within a cytoskeletal matrix. Here we show that the sterile alpha motif domain of rat Shank3/ProSAP2, a master scaffolding protein located deep within the PSD, can form large sheets composed of helical fibers stacked side by side. Zn2+, which is found in high concentrations in the PSD, binds tightly to Shank3 and may regulate assembly. Sheets of the Shank protein could form a platform for the construction of the PSD complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baron, Marisa K -- Boeckers, Tobias M -- Vaida, Bianca -- Faham, Salem -- Gingery, Mari -- Sawaya, Michael R -- Salyer, Danielle -- Gundelfinger, Eckart D -- Bowie, James U -- R01 CA081000/CA/NCI NIH HHS/ -- R01 GM063919/GM/NIGMS NIH HHS/ -- R01 GM063919-07/GM/NIGMS NIH HHS/ -- R01 GM063919-08/GM/NIGMS NIH HHS/ -- R01 GM075922/GM/NIGMS NIH HHS/ -- R01 GM075922-04/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Jan 27;311(5760):531-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, Molecular Biology Institute, University of California, Los Angeles, 611 Charles E. Young Drive East, Los Angeles, CA 90095-1570, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16439662" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptor Proteins, Signal Transducing/analysis/*chemistry/genetics/metabolism ; Animals ; Binding Sites ; Crystallization ; Crystallography, X-Ray ; Hippocampus/chemistry ; Microscopy, Electron ; Models, Molecular ; Mutation ; Nerve Tissue Proteins ; Neurons/chemistry ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; Protein Subunits/chemistry ; Rats ; Recombinant Fusion Proteins/analysis ; Solubility ; Synapses/*chemistry ; Zinc/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 32
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    Volatile signaling in plant-plant interactions: "talking trees" in the genomics era (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-02-14
    Beschreibung: Plants may "eavesdrop" on volatile organic compounds (VOCs) released by herbivore-attacked neighbors to activate defenses before being attacked themselves. Transcriptome and signal cascade analyses of VOC-exposed plants suggest that plants eavesdrop to prime direct and indirect defenses and to hone competitive abilities. Advances in research on VOC biosynthesis and perception have facilitated the production of plants that are genetically "deaf" to particular VOCs or "mute" in elements of their volatile vocabulary. Such plants, together with advances in VOC analytical instrumentation, will allow researchers to determine whether fluency enhances the fitness of plants in natural communities.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baldwin, Ian T -- Halitschke, Rayko -- Paschold, Anja -- von Dahl, Caroline C -- Preston, Catherine A -- New York, N.Y. -- Science. 2006 Feb 10;311(5762):812-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans Knoll Strasse 8, Jena 07745, Germany. baldwin@ice.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16469918" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Adaptation, Physiological ; Diffusion ; Gene Expression Regulation, Plant ; Genomics ; Mutation ; Oligonucleotide Array Sequence Analysis ; Organic Chemicals/*metabolism ; Plant Leaves/metabolism ; *Plant Physiological Phenomena ; Plants/*genetics/metabolism ; Signal Transduction ; Volatilization
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Caveolin-1 is essential for liver regeneration (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-09-16
    Beschreibung: Liver regeneration is an orchestrated cellular response that coordinates cell activation, lipid metabolism, and cell division. We found that caveolin-1 gene-disrupted mice (cav1-/- mice) exhibited impaired liver regeneration and low survival after a partial hepatectomy. Hepatocytes showed dramatically reduced lipid droplet accumulation and did not advance through the cell division cycle. Treatment of cav1-/- mice with glucose (which is a predominant energy substrate when compared to lipids) drastically increased survival and reestablished progression of the cell cycle. Thus, caveolin-1 plays a crucial role in the mechanisms that coordinate lipid metabolism with the proliferative response occurring in the liver after cellular injury.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fernandez, Manuel A -- Albor, Cecilia -- Ingelmo-Torres, Mercedes -- Nixon, Susan J -- Ferguson, Charles -- Kurzchalia, Teymuras -- Tebar, Francesc -- Enrich, Carlos -- Parton, Robert G -- Pol, Albert -- New York, N.Y. -- Science. 2006 Sep 15;313(5793):1628-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departament de Biologia Cellular, Facultat de Medicina, Institut d'Investigacions Biomediques August Pi i Sunyer, Universitat de Barcelona, Casanova 143, 08036 Barcelona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16973879" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Caveolae/metabolism ; Caveolin 1/genetics/*physiology ; Cell Cycle ; Cell Division ; Fatty Acids/blood/metabolism ; Glucose/administration & dosage ; Hepatectomy ; Hepatocyte Growth Factor/metabolism ; Hepatocytes/cytology/*metabolism ; *Lipid Metabolism ; Lipids/blood ; Liver/metabolism/ultrastructure ; *Liver Regeneration ; Male ; Mice ; Phosphorylation ; RNA, Small Interfering ; STAT3 Transcription Factor/metabolism ; Signal Transduction ; Triglycerides/blood/metabolism
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    The FERONIA receptor-like kinase mediates male-female interactions during pollen tube reception (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-08-04
    Beschreibung: In flowering plants, signaling between the male pollen tube and the synergid cells of the female gametophyte is required for fertilization. In the Arabidopsis thaliana mutant feronia (fer), fertilization is impaired; the pollen tube fails to arrest and thus continues to grow inside the female gametophyte. FER encodes a synergid-expressed, plasma membrane-localized receptor-like kinase. We found that the FER protein accumulates asymmetrically in the synergid membrane at the filiform apparatus. Interspecific crosses using pollen from Arabidopsis lyrata and Cardamine flexuosa on A. thaliana stigmas resulted in a fer-like phenotype that correlates with sequence divergence in the extracellular domain of FER. Our findings show that the female control of pollen tube reception is based on a FER-dependent signaling pathway, which may play a role in reproductive isolation barriers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Escobar-Restrepo, Juan-Miguel -- Huck, Norbert -- Kessler, Sharon -- Gagliardini, Valeria -- Gheyselinck, Jacqueline -- Yang, Wei-Cai -- Grossniklaus, Ueli -- New York, N.Y. -- Science. 2007 Aug 3;317(5838):656-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Plant Biology and Zurich-Basel Plant Science Center, University of Zurich, Zollikerstrasse 107, CH-8008 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17673660" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Arabidopsis/enzymology/genetics/*physiology ; Arabidopsis Proteins/chemistry/*genetics/*metabolism ; Brassicaceae/genetics/physiology ; Cell Membrane/enzymology ; Crosses, Genetic ; Evolution, Molecular ; Flowers/cytology/enzymology/*physiology ; Gene Expression ; Genes, Plant ; Germination ; Ligands ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Phosphotransferases/chemistry/*genetics/*metabolism ; Plant Epidermis/enzymology ; Pollen Tube/growth & development/*physiology ; Recombinant Fusion Proteins/metabolism ; Reproduction ; Seeds/growth & development ; Signal Transduction ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Positive regulation of Itk PH domain function by soluble IP4 (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-04-07
    Beschreibung: Pleckstrin homology (PH) domain-mediated protein recruitment to cellular membranes is of paramount importance for signal transduction. The recruitment of many PH domains is controlled through production and turnover of their membrane ligand, phosphatidylinositol 3,4,5-trisphosphate (PIP3). We show that phosphorylation of the second messenger inositol 1,4,5-trisphosphate (IP3) into inositol 1,3,4,5-tetrakisphosphate (IP4) establishes another mode of PH domain regulation through a soluble ligand. At physiological concentrations, IP4 promoted PH domain binding to PIP3. In primary mouse CD4+CD8+ thymocytes, this was required for full activation of the protein tyrosine kinase Itk after T cell receptor engagement. Our data suggest that IP4 establishes a feedback loop of phospholipase C-gamma1 activation through Itk that is essential for T cell development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, Yina H -- Grasis, Juris A -- Miller, Andrew T -- Xu, Ruo -- Soonthornvacharin, Stephen -- Andreotti, Amy H -- Tsoukas, Constantine D -- Cooke, Michael P -- Sauer, Karsten -- AR048848/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2007 May 11;316(5826):886-9. Epub 2007 Apr 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Scripps Research Institute, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17412921" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptor Proteins, Signal Transducing/metabolism ; *Amino Acid Motifs ; Animals ; Diglycerides/metabolism ; Feedback, Physiological ; Inositol 1,4,5-Trisphosphate/metabolism ; Inositol Phosphates/*metabolism/pharmacology ; Lymphopoiesis ; Membrane Proteins/metabolism ; Mice ; Mice, Inbred C57BL ; Models, Biological ; Organ Culture Techniques ; Phosphatidylinositol Phosphates/metabolism ; Phospholipase C gamma/metabolism ; Phosphoproteins/metabolism ; Phosphorylation ; Protein Structure, Tertiary ; Protein-Tyrosine Kinases/chemistry/*metabolism ; Receptors, Antigen, T-Cell/immunology ; Second Messenger Systems ; Signal Transduction ; Solubility ; T-Lymphocytes/cytology/immunology/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 36
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    Forces and bond dynamics in cell adhesion (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-05-26
    Beschreibung: Adhesion of a biological cell to another cell or the extracellular matrix involves complex couplings between cell biochemistry, structural mechanics, and surface bonding. The interactions are dynamic and act through association and dissociation of bonds between very large molecules at rates that change considerably under stress. Combining molecular cell biology with single-molecule force spectroscopy provides a powerful tool for exploring the complexity of cell adhesion, that is, how cell signaling processes strengthen adhesion bonds and how forces applied to cell-surface bonds act on intracellular sites to catalyze chemical processes or switch molecular interactions on and off. Probing adhesion receptors on strategically engineered cells with force during functional stimulation can reveal key nodes of communication between the mechanical and chemical circuitry of a cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Evans, Evan A -- Calderwood, David A -- New York, N.Y. -- Science. 2007 May 25;316(5828):1148-53.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA. evans@physics.ubc.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17525329" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Biomechanical Phenomena ; Cell Adhesion/*physiology ; Humans ; Integrins/chemistry/physiology ; Selectins/chemistry/physiology ; Signal Transduction ; Spectrum Analysis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 37
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    CDK2-dependent phosphorylation of FOXO1 as an apoptotic response to DNA damage (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-14
    Beschreibung: The function of cyclin-dependent kinase 2 (CDK2) is often abolished after DNA damage. The inhibition of CDK2 plays a central role in DNA damage-induced cell cycle arrest and DNA repair. However, whether CDK2 also influences the survival of cells under genotoxic stress is unknown. Forkhead box O (FOXO) transcription factors are emerging as key regulators of cell survival. CDK2 specifically phosphorylated FOXO1 at serine-249 (Ser249) in vitro and in vivo. Phosphorylation of Ser249 resulted in cytoplasmic localization and inhibition of FOXO1. This phosphorylation was abrogated upon DNA damage through the cell cycle checkpoint pathway that is dependent on the protein kinases Chk1 and Chk2. Moreover, silencing of FOXO1 by small interfering RNA diminished DNA damage-induced death in both p53-deficient and p53-proficient cells. This effect was reversed by restored expression of FOXO1 in a manner depending on phosphorylation of Ser249. Functional interaction between CDK2 and FOXO1 provides a mechanism that regulates apoptotic cell death after DNA strand breakage.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, Haojie -- Regan, Kevin M -- Lou, Zhenkun -- Chen, Junjie -- Tindall, Donald J -- CA91956/CA/NCI NIH HHS/ -- DK60920/DK/NIDDK NIH HHS/ -- DK65236/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2006 Oct 13;314(5797):294-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17038621" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Apoptosis ; Camptothecin/pharmacology ; Cell Line, Tumor ; Cell Nucleus/metabolism ; Checkpoint Kinase 2 ; Cyclin-Dependent Kinase 2/antagonists & inhibitors/genetics/*metabolism ; Cytoplasm/metabolism ; *DNA Damage ; Forkhead Transcription Factors/antagonists & inhibitors/*metabolism ; Humans ; Mice ; Phosphorylation ; Phosphoserine/metabolism ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases/metabolism ; RNA, Small Interfering ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transcription, Genetic ; Transfection ; Tumor Suppressor Protein p53/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 38
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    Neuroscience. Brain evolution on the far side (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-14
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2006 Oct 13;314(5797):244-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17038601" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Evolution ; *Brain/physiology ; Brain Chemistry ; Cognition ; Evolution, Molecular ; Gene Expression Profiling ; Humans ; Invertebrates/anatomy & histology/physiology ; Membrane Proteins/*analysis/genetics/metabolism ; Multiprotein Complexes/*analysis/genetics/metabolism ; Nerve Tissue Proteins/*analysis/genetics/metabolism ; Organ Size ; Receptors, Neurotransmitter/analysis/genetics/metabolism ; Signal Transduction ; Synaptic Membranes/*chemistry/physiology ; Synaptic Transmission ; Vertebrates/anatomy & histology/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 39
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    Plant science. Reproductive dialog (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-08-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCormick, Sheila -- New York, N.Y. -- Science. 2007 Aug 3;317(5838):606-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Plant Gene Expression Center, USDA Agricultural Research Service-UC Berkeley, 800 Buchanan Street, Albany, CA 94710, USA. sheilamc@nature.berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17673644" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Arabidopsis/enzymology/genetics/*physiology ; Arabidopsis Proteins/genetics/*metabolism ; Cell Membrane/enzymology ; Crosses, Genetic ; Evolution, Molecular ; Flowers/cytology/enzymology/*physiology ; Genes, Plant ; Ligands ; Models, Biological ; Mutation ; Phosphotransferases/*genetics/*metabolism ; Pollen Tube/growth & development/*physiology ; Reproduction ; Signal Transduction ; Species Specificity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 40
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    Activity-dependent regulation of MEF2 transcription factors suppresses excitatory synapse number (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-02-18
    Beschreibung: In the mammalian nervous system, neuronal activity regulates the strength and number of synapses formed. The genetic program that coordinates this process is poorly understood. We show that myocyte enhancer factor 2 (MEF2) transcription factors suppressed excitatory synapse number in a neuronal activity- and calcineurin-dependent manner as hippocampal neurons formed synapses. In response to increased neuronal activity, calcium influx into neurons induced the activation of the calcium/calmodulin-regulated phosphatase calcineurin, which dephosphorylated and activated MEF2. When activated, MEF2 promoted the transcription of a set of genes, including arc and synGAP, that restrict synapse number. These findings define an activity-dependent transcriptional program that may control synapse number during development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Flavell, Steven W -- Cowan, Christopher W -- Kim, Tae-Kyung -- Greer, Paul L -- Lin, Yingxi -- Paradis, Suzanne -- Griffith, Eric C -- Hu, Linda S -- Chen, Chinfei -- Greenberg, Michael E -- AG05870/AG/NIA NIH HHS/ -- HD18655/HD/NICHD NIH HHS/ -- NS28829/NS/NINDS NIH HHS/ -- R01 EY013613/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 2006 Feb 17;311(5763):1008-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Neurobiology Program, Children's Hospital, and Departments of Neurology and Neurobiology, Harvard Medical School, 300 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16484497" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Calcineurin/metabolism ; Calcium/metabolism ; Cells, Cultured ; Cytoskeletal Proteins/genetics ; Dendrites/physiology/ultrastructure ; Excitatory Postsynaptic Potentials ; GTPase-Activating Proteins/genetics ; Gene Expression Regulation ; Glutamic Acid/metabolism ; Hippocampus/cytology/*physiology ; MEF2 Transcription Factors ; Mutation ; Myogenic Regulatory Factors/genetics/*physiology ; Nerve Tissue Proteins/genetics ; Neurons/*physiology ; Oligonucleotide Array Sequence Analysis ; Phosphorylation ; RNA Interference ; Rats ; Rats, Long-Evans ; Recombinant Fusion Proteins/metabolism ; Synapses/*physiology ; Synaptic Transmission ; Transcription, Genetic ; Transfection
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 41
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    B cell ligand discrimination through a spreading and contraction response (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-05-06
    Beschreibung: B cells recognize foreign antigens by virtue of cell surface immunoglobulin receptors and are most effectively activated by membrane-bound ligands. Here, we show that in the early stages of this process, B cells exhibit a two-phase response in which they first spread over the antigen-bearing membrane and then contract, thereby collecting bound antigen into a central aggregate. The extent of this response, which is both signaling- and actin-dependent, determines the quantity of antigen accumulated and hence the degree of B cell activation. Brownian dynamic simulations reproduce essential features of the antigen collection process and suggest a possible basis for affinity discrimination. We propose that dynamic spreading is an important step of the immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fleire, S J -- Goldman, J P -- Carrasco, Y R -- Weber, M -- Bray, D -- Batista, F D -- G64713/PHS HHS/ -- New York, N.Y. -- Science. 2006 May 5;312(5774):738-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Interaction Laboratory, London Research Institute, Cancer Research UK, 44 Lincoln's Inn Fields, London, WC2A 3PX, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16675699" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Actins/physiology ; Algorithms ; Animals ; Antibody Affinity ; Antigen Presentation ; Antigens, Surface/*immunology ; B-Lymphocytes/*immunology/*physiology ; Cell Shape ; Computer Simulation ; Flow Cytometry ; Ligands ; Lipid Bilayers ; *Lymphocyte Activation ; Mice ; Mice, Transgenic ; Microscopy, Fluorescence ; Models, Immunological ; Muramidase/immunology ; Receptors, Antigen, B-Cell/*immunology/metabolism ; Recombinant Fusion Proteins/immunology ; Signal Transduction ; Stochastic Processes ; T-Lymphocytes/immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 42
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    Muscular thin films for building actuators and powering devices (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-09-08
    Beschreibung: We demonstrate the assembly of biohybrid materials from engineered tissues and synthetic polymer thin films. The constructs were built by culturing neonatal rat ventricular cardiomyocytes on polydimethylsiloxane thin films micropatterned with extracellular matrix proteins to promote spatially ordered, two-dimensional myogenesis. The constructs, termed muscular thin films, adopted functional, three-dimensional conformations when released from a thermally sensitive polymer substrate and were designed to perform biomimetic tasks by varying tissue architecture, thin-film shape, and electrical-pacing protocol. These centimeter-scale constructs perform functions as diverse as gripping, pumping, walking, and swimming with fine spatial and temporal control and generating specific forces as high as 4 millinewtons per square millimeter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feinberg, Adam W -- Feigel, Alex -- Shevkoplyas, Sergey S -- Sheehy, Sean -- Whitesides, George M -- Parker, Kevin Kit -- New York, N.Y. -- Science. 2007 Sep 7;317(5843):1366-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Disease Biophysics Group, School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17823347" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anisotropy ; Cell Culture Techniques ; Cells, Cultured ; Dimethylpolysiloxanes ; Microscopy, Fluorescence ; Motion ; Muscle Contraction ; *Myocardium ; Myocytes, Cardiac ; Rats ; Rats, Sprague-Dawley ; Robotics ; Silicones ; *Tissue Engineering
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 43
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    BKCa-Cav channel complexes mediate rapid and localized Ca2+-activated K+ signaling (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-28
    Beschreibung: Large-conductance calcium- and voltage-activated potassium channels (BKCa) are dually activated by membrane depolarization and elevation of cytosolic calcium ions (Ca2+). Under normal cellular conditions, BKCa channel activation requires Ca2+ concentrations that typically occur in close proximity to Ca2+ sources. We show that BKCa channels affinity-purified from rat brain are assembled into macromolecular complexes with the voltage-gated calcium channels Cav1.2 (L-type), Cav2.1 (P/Q-type), and Cav2.2 (N-type). Heterologously expressed BKCa-Cav complexes reconstitute a functional "Ca2+ nanodomain" where Ca2+ influx through the Cav channel activates BKCa in the physiological voltage range with submillisecond kinetics. Complex formation with distinct Cav channels enables BKCa-mediated membrane hyperpolarization that controls neuronal firing pattern and release of hormones and transmitters in the central nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berkefeld, Henrike -- Sailer, Claudia A -- Bildl, Wolfgang -- Rohde, Volker -- Thumfart, Jorg-Oliver -- Eble, Silke -- Klugbauer, Norbert -- Reisinger, Ellen -- Bischofberger, Josef -- Oliver, Dominik -- Knaus, Hans-Gunther -- Schulte, Uwe -- Fakler, Bernd -- New York, N.Y. -- Science. 2006 Oct 27;314(5799):615-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Physiology, University of Freiburg, Hermann-Herder-Strasse 7, 79104 Freiburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17068255" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Brain Chemistry ; CHO Cells ; Calcium/*metabolism ; Calcium Channels, L-Type/drug effects/isolation & purification/*metabolism ; Calcium Channels, N-Type/drug effects/isolation & purification/*metabolism ; Calcium Signaling ; Chromaffin Cells/drug effects/metabolism ; Cricetinae ; Cricetulus ; Egtazic Acid/analogs & derivatives/pharmacology ; Large-Conductance Calcium-Activated Potassium Channels/drug effects/isolation & ; purification/*metabolism ; Membrane Potentials/drug effects ; Molecular Sequence Data ; Patch-Clamp Techniques ; Potassium/*metabolism ; Rats ; *Signal Transduction ; Transfection ; Xenopus
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Protrudin induces neurite formation by directional membrane trafficking (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-11-04
    Beschreibung: Guanosine triphosphatases of the Rab family are key regulators of membrane trafficking, with Rab11 playing a specific role in membrane recycling. We identified a mammalian protein, protrudin, that promoted neurite formation through interaction with the guanosine diphosphate (GDP)-bound form of Rab11. Phosphorylation of protrudin by extracellular signal-regulated kinase (ERK) in response to nerve growth factor promoted protrudin association with Rab11-GDP. Down-regulation of protrudin by RNA interference induced membrane extension in all directions and inhibited neurite formation. Thus, protrudin regulates Rab11-dependent membrane recycling to promote the directional membrane trafficking required for neurite formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shirane, Michiko -- Nakayama, Keiichi I -- New York, N.Y. -- Science. 2006 Nov 3;314(5800):818-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17082457" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Adhesion Molecules/metabolism ; Cell Line ; Cell Membrane/*metabolism ; Extracellular Signal-Regulated MAP Kinases/metabolism ; Guanosine Diphosphate/metabolism ; HeLa Cells ; Humans ; MAP Kinase Kinase 1/metabolism ; Membrane Proteins ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Nerve Growth Factor/pharmacology/physiology ; Neurites/*physiology ; PC12 Cells ; Phosphorylation ; RNA Interference ; Rats ; Recombinant Fusion Proteins/chemistry/metabolism ; Vesicular Transport Proteins ; rab GTP-Binding Proteins/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 45
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    Microbiology. Deadly priming (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-10-27
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolter, Roberto -- New York, N.Y. -- Science. 2007 Oct 26;318(5850):578-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, MA 02115, USA. rkolter@hms.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17962544" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Apoptosis ; Colony Count, Microbial ; Escherichia coli/cytology/*physiology ; Glucosephosphate Dehydrogenase/*metabolism ; Oligopeptides/*metabolism ; *Quorum Sensing ; Signal Transduction
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  • 46
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    Regulation of hepatic stellate cell differentiation by the neurotrophin receptor p75NTR (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-31
    Beschreibung: Differentiation of hepatic stellate cells (HSCs) to extracellular matrix- and growth factor-producing cells supports liver regeneration through promotion of hepatocyte proliferation. We show that the neurotrophin receptor p75NTR, a tumor necrosis factor receptor superfamily member expressed in HSCs after fibrotic and cirrhotic liver injury in humans, is a regulator of liver repair. In mice, depletion of p75NTR exacerbated liver pathology and inhibited hepatocyte proliferation in vivo. p75NTR-/- HSCs failed to differentiate to myofibroblasts and did not support hepatocyte proliferation. Moreover, inhibition of p75NTR signaling to the small guanosine triphosphatase Rho resulted in impaired HSC differentiation. Our results identify signaling from p75NTR to Rho as a mechanism for the regulation of HSC differentiation to regeneration-promoting cells that support hepatocyte proliferation in the diseased liver.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Passino, Melissa A -- Adams, Ryan A -- Sikorski, Shoana L -- Akassoglou, Katerina -- 5T32-GM07752/GM/NIGMS NIH HHS/ -- NS051470/NS/NINDS NIH HHS/ -- P30-NS047101/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2007 Mar 30;315(5820):1853-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of California, San Diego (UCSD), La Jolla, CA 92093-0636, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17395831" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; Disease Progression ; Extracellular Matrix/metabolism ; Fibroblasts/*cytology ; Hepatocyte Growth Factor/metabolism ; Hepatocytes/*cytology ; Liver/*cytology/metabolism/pathology/physiology ; Liver Diseases/metabolism/*pathology ; *Liver Regeneration ; Mice ; Nerve Growth Factor/pharmacology ; Receptors, Nerve Growth Factor/genetics/*metabolism ; Signal Transduction ; rho GTP-Binding Proteins/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 47
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    Genetically determined differences in learning from errors (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-12-08
    Beschreibung: The role of dopamine in monitoring negative action outcomes and feedback-based learning was tested in a neuroimaging study in humans grouped according to the dopamine D2 receptor gene polymorphism DRD2-TAQ-IA. In a probabilistic learning task, A1-allele carriers with reduced dopamine D2 receptor densities learned to avoid actions with negative consequences less efficiently. Their posterior medial frontal cortex (pMFC), involved in feedback monitoring, responded less to negative feedback than others' did. Dynamically changing interactions between pMFC and hippocampus found to underlie feedback-based learning were reduced in A1-allele carriers. This demonstrates that learning from errors requires dopaminergic signaling. Dopamine D2 receptor reduction seems to decrease sensitivity to negative action consequences, which may explain an increased risk of developing addictive behaviors in A1-allele carriers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klein, Tilmann A -- Neumann, Jane -- Reuter, Martin -- Hennig, Jurgen -- von Cramon, D Yves -- Ullsperger, Markus -- R01MH74457/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2007 Dec 7;318(5856):1642-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany. tklein@cbs.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18063800" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Alleles ; *Avoidance Learning ; Basal Ganglia/physiology ; Brain Mapping ; Dopamine/*physiology ; Feedback, Psychological ; Frontal Lobe/*physiology ; Hippocampus/physiology ; Humans ; *Learning ; Magnetic Resonance Imaging ; Male ; Nucleus Accumbens/physiology ; *Polymorphism, Genetic ; Receptors, Dopamine D2/*genetics/metabolism ; *Reinforcement (Psychology) ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 48
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    Comment on "A centrosome-independent role for gamma-TuRC proteins in the spindle assembly checkpoint" (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-05-19
    Beschreibung: Muller et al. (Reports, 27 October 2006, p. 654) proposed a role for microtubule nucleation in mitotic checkpoint signaling. However, their observations of spindle defects and mitotic delay after depletion of gamma-tubulin ring complex (gamma-TuRC) components are fully consistent with activation of the established pathway of checkpoint signaling in response to incomplete or unstable interactions between kinetochores of mitotic chromosomes and spindle microtubules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weaver, Beth A A -- Cleveland, Don W -- New York, N.Y. -- Science. 2007 May 18;316(5827):982; author reply 982.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ludwig Institute for Cancer Research and Department of Cellular and Molecular Medicine, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0670, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17510348" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Kinetochores/*physiology ; Microtubule-Associated Proteins/*metabolism ; Microtubules/*metabolism/ultrastructure ; *Mitosis ; Signal Transduction ; Spindle Apparatus/*metabolism ; Tubulin/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 49
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    Structure of Nup58/45 suggests flexible nuclear pore diameter by intermolecular sliding (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-24
    Beschreibung: The nucleoporins Nup58 and Nup45 are part of the central transport channel of the nuclear pore complex, which is thought to have a flexible diameter. In the crystal structure of an alpha-helical region of mammalian Nup58/45, we identified distinct tetramers, each consisting of two antiparallel hairpin dimers. The intradimeric interface is hydrophobic, whereas dimer-dimer association occurs through large hydrophilic residues. These residues are laterally displaced in various tetramer conformations, which suggests an intermolecular sliding by 11 angstroms. We propose that circumferential sliding plays a role in adjusting the diameter of the central transport channel.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Melcak, Ivo -- Hoelz, Andre -- Blobel, Gunter -- R01 GM111461/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 Mar 23;315(5819):1729-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cell Biology, Howard Hughes Medical Institute, Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17379812" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Crystallization ; Crystallography, X-Ray ; Dimerization ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Membrane Glycoproteins/chemistry ; Molecular Sequence Data ; Nuclear Pore Complex Proteins/*chemistry ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/chemistry ; Rats ; Static Electricity
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 50
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    Anatomy and dynamics of a supramolecular membrane protein cluster (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-08-25
    Beschreibung: Most plasmalemmal proteins organize in submicrometer-sized clusters whose architecture and dynamics are still enigmatic. With syntaxin 1 as an example, we applied a combination of far-field optical nanoscopy, biochemistry, fluorescence recovery after photobleaching (FRAP) analysis, and simulations to show that clustering can be explained by self-organization based on simple physical principles. On average, the syntaxin clusters exhibit a diameter of 50 to 60 nanometers and contain 75 densely crowded syntaxins that dynamically exchange with freely diffusing molecules. Self-association depends on weak homophilic protein-protein interactions. Simulations suggest that clustering immobilizes and conformationally constrains the molecules. Moreover, a balance between self-association and crowding-induced steric repulsions is sufficient to explain both the size and dynamics of syntaxin clusters and likely of many oligomerizing membrane proteins that form supramolecular structures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sieber, Jochen J -- Willig, Katrin I -- Kutzner, Carsten -- Gerding-Reimers, Claas -- Harke, Benjamin -- Donnert, Gerald -- Rammner, Burkhard -- Eggeling, Christian -- Hell, Stefan W -- Grubmuller, Helmut -- Lang, Thorsten -- New York, N.Y. -- Science. 2007 Aug 24;317(5841):1072-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Gottingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17717182" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Motifs ; Animals ; Cell Membrane/chemistry/*metabolism ; Chemistry, Physical ; Computer Simulation ; Diffusion ; Fluorescence Recovery After Photobleaching ; Green Fluorescent Proteins ; Immunoblotting ; Microscopy, Confocal ; Microscopy, Fluorescence ; Models, Biological ; Nanotechnology ; PC12 Cells ; Physicochemical Phenomena ; Protein Structure, Tertiary ; Rats ; Recombinant Fusion Proteins/chemistry/metabolism ; Syntaxin 1/*chemistry/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 51
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    Immunology. The shape of things to come (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-06-16
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fitzgerald, Katherine A -- Golenbock, Douglas T -- New York, N.Y. -- Science. 2007 Jun 15;316(5831):1574-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA 01605, USA. kate.fitzgerald@umassmed.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569850" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptor Proteins, Signal Transducing/metabolism ; Adaptor Proteins, Vesicular Transport/metabolism ; *Adjuvants, Immunologic ; Animals ; Crystallography, X-Ray ; Glycolipids/chemistry/metabolism ; Humans ; Hydrophobic and Hydrophilic Interactions ; Ligands ; Lipid A/*analogs & derivatives/chemistry/immunology/metabolism ; Lymphocyte Activation ; Lymphocyte Antigen 96/*chemistry/metabolism ; Mice ; Phosphates/metabolism ; Protein Conformation ; Receptors, Interleukin/metabolism ; Signal Transduction ; T-Lymphocytes/immunology ; Toll-Like Receptor 4/chemistry/*immunology/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 52
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    Signals from chloroplasts converge to regulate nuclear gene expression (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-31
    Beschreibung: Plastid-to-nucleus retrograde signaling coordinates nuclear gene expression with chloroplast function and is essential for the photoautotrophic life-style of plants. Three retrograde signals have been described, but little is known of their signaling pathways. We show here that GUN1, a chloroplast-localized pentatricopeptide-repeat protein, and ABI4, an Apetala 2 (AP2)-type transcription factor, are common to all three pathways. ABI4 binds the promoter of a retrograde-regulated gene through a conserved motif found in close proximity to a light-regulatory element. We propose a model in which multiple indicators of aberrant plastid function in Arabidopsis are integrated upstream of GUN1 within plastids, which leads to ABI4-mediated repression of nuclear-encoded genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koussevitzky, Shai -- Nott, Ajit -- Mockler, Todd C -- Hong, Fangxin -- Sachetto-Martins, Gilberto -- Surpin, Marci -- Lim, Jason -- Mittler, Ron -- Chory, Joanne -- DRG-1865-05/PHS HHS/ -- F32 GM 18172/GM/NIGMS NIH HHS/ -- F32 GM 69090/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 May 4;316(5825):715-9. Epub 2007 Mar 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17395793" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abscisic Acid ; Amino Acid Motifs ; Amino Acid Sequence ; Arabidopsis/genetics/*metabolism ; Arabidopsis Proteins/chemistry/genetics/*metabolism ; Cell Nucleus/*metabolism/*microbiology ; Chloroplasts/*metabolism ; DNA, Plant/metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Electron Transport ; *Gene Expression Regulation, Plant ; Light-Harvesting Protein Complexes/genetics ; Lincomycin/pharmacology ; Models, Biological ; Molecular Sequence Data ; Oligonucleotide Array Sequence Analysis ; Plants, Genetically Modified ; Promoter Regions, Genetic ; Protoporphyrins/metabolism ; Pyridazines/pharmacology ; Signal Transduction ; Transcription Factors/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 53
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    Hardwiring the brain: endocannabinoids shape neuronal connectivity (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-05-26
    Beschreibung: The roles of endocannabinoid signaling during central nervous system development are unknown. We report that CB(1) cannabinoid receptors (CB(1)Rs) are enriched in the axonal growth cones of gamma-aminobutyric acid-containing (GABAergic) interneurons in the rodent cortex during late gestation. Endocannabinoids trigger CB(1)R internalization and elimination from filopodia and induce chemorepulsion and collapse of axonal growth cones of these GABAergic interneurons by activating RhoA. Similarly, endocannabinoids diminish the galvanotropism of Xenopus laevis spinal neurons. These findings, together with the impaired target selection of cortical GABAergic interneurons lacking CB(1)Rs, identify endocannabinoids as axon guidance cues and demonstrate that endocannabinoid signaling regulates synaptogenesis and target selection in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berghuis, Paul -- Rajnicek, Ann M -- Morozov, Yury M -- Ross, Ruth A -- Mulder, Jan -- Urban, Gabriella M -- Monory, Krisztina -- Marsicano, Giovanni -- Matteoli, Michela -- Canty, Alison -- Irving, Andrew J -- Katona, Istvan -- Yanagawa, Yuchio -- Rakic, Pasko -- Lutz, Beat -- Mackie, Ken -- Harkany, Tibor -- DA00286/DA/NIDA NIH HHS/ -- DA015916/DA/NIDA NIH HHS/ -- DA11322/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 2007 May 25;316(5828):1212-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-17177 Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17525344" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Axons/physiology ; Cannabinoid Receptor Modulators/metabolism/*physiology ; Cell Movement ; Cells, Cultured ; Cerebral Cortex/cytology/embryology/ultrastructure ; *Endocannabinoids ; Growth Cones/physiology/ultrasonography ; In Situ Hybridization ; Interneurons/metabolism/*physiology/ultrasonography ; Mice ; Mice, Inbred C57BL ; Microscopy, Confocal ; Rats ; Rats, Sprague-Dawley ; Receptor, Cannabinoid, CB1/agonists/*physiology ; Signal Transduction ; Stem Cells/metabolism ; Synapses/physiology/ultrasonography ; Xenopus Proteins/physiology ; Xenopus laevis ; gamma-Aminobutyric Acid/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 54
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    The slit receptor EVA-1 coactivates a SAX-3/Robo mediated guidance signal in C. elegans (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-09-29
    Beschreibung: The SAX-3/roundabout (Robo) receptor has SLT-1/Slit-dependent and -independent functions in guiding cell and axon migrations. We identified enhancer of ventral-axon guidance defects of unc-40 mutants (EVA-1) as a Caenorhabditis elegans transmembrane receptor for SLT-1. EVA-1 has two predicted galactose-binding ectodomains, acts cell-autonomously for SLT-1/Slit-dependent axon migration functions of SAX-3/Robo, binds to SLT-1 and SAX-3, colocalizes with SAX-3 on cells, and provides cell specificity to the activation of SAX-3 signaling by SLT-1. Double mutants of eva-1 or slt-1 with sax-3 mutations suggest that SAX-3 can (when slt-1 or eva-1 function is reduced) inhibit a parallel-acting guidance mechanism, which involves UNC-40/deleted in colorectal cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fujisawa, Kazuko -- Wrana, Jeffrey L -- Culotti, Joseph G -- NS41397/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2007 Sep 28;317(5846):1934-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute of Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario M5G 1X5, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17901337" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Animals, Genetically Modified ; Axons/*physiology ; Caenorhabditis elegans/cytology/genetics/growth & development/*physiology ; Caenorhabditis elegans Proteins/*chemistry/genetics/*metabolism ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Line ; Cell Movement ; Cloning, Molecular ; Humans ; Molecular Sequence Data ; Mutation ; Nerve Tissue Proteins/*metabolism ; Nervous System/growth & development/metabolism ; Neurons/physiology ; Protein Structure, Tertiary ; Receptors, Immunologic/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 55
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    Male and female Drosophila germline stem cells: two versions of immortality (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-04-21
    Beschreibung: Drosophila male and female germline stem cells (GSCs) are sustained by niches and regulatory pathways whose common principles serve as models for understanding mammalian stem cells. Despite striking cellular and genetic similarities that suggest a common evolutionary origin, however, male and female GSCs also display important differences. Comparing these two stem cells and their niches in detail is likely to reveal how a common heritage has been adapted to the differing requirements of male and female gamete production.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fuller, Margaret T -- Spradling, Allan C -- P01DK53074/DK/NIDDK NIH HHS/ -- R01GM61986/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2007 Apr 20;316(5823):402-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Developmental Biology and Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17446390" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult Stem Cells/*cytology/physiology ; Animals ; Cell Adhesion ; Cell Differentiation ; Cell Division ; Centrosome/physiology ; Drosophila/*cytology/*physiology ; Drosophila Proteins/physiology ; Female ; Germ Cells/*cytology/physiology ; Male ; Ovary/cytology ; Sex Characteristics ; Signal Transduction ; Testis/cytology
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    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Physiology. An integrative view of obesity (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-11-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wisse, Brent E -- Kim, Francis -- Schwartz, Michael W -- DK073878/DK/NIDDK NIH HHS/ -- DK12829/DK/NIDDK NIH HHS/ -- DK61384/DK/NIDDK NIH HHS/ -- NS3227/NS/NINDS NIH HHS/ -- P01-DK 068384/DK/NIDDK NIH HHS/ -- R01 DK074758/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2007 Nov 9;318(5852):928-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Harborview Medical Center and University of Washington, Seattle, WA 98104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17991852" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acyl Coenzyme A/metabolism ; Adipose Tissue/metabolism ; Animals ; Diabetes Mellitus, Type 2/metabolism ; Endothelium, Vascular/metabolism ; *Energy Intake ; Energy Metabolism ; Homeostasis ; Humans ; Hypothalamus/metabolism ; Inflammation/metabolism ; Insulin/metabolism/secretion ; Insulin Resistance ; Insulin-Secreting Cells/metabolism ; Leptin/metabolism ; Nitric Oxide/metabolism ; Obesity/etiology/*metabolism ; Oxidative Stress ; Phosphatidylinositol 3-Kinases/metabolism ; Reactive Oxygen Species/metabolism ; Receptor, Insulin/metabolism ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Anti-Hebbian long-term potentiation in the hippocampal feedback inhibitory circuit (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-03
    Beschreibung: Long-term potentiation (LTP), which approximates Hebb's postulate of associative learning, typically requires depolarization-dependent glutamate receptors of the NMDA (N-methyl-D-aspartate) subtype. However, in some neurons, LTP depends instead on calcium-permeable AMPA-type receptors. This is paradoxical because intracellular polyamines block such receptors during depolarization. We report that LTP at synapses on hippocampal interneurons mediating feedback inhibition is "anti-Hebbian":Itis induced by presynaptic activity but prevented by postsynaptic depolarization. Anti-Hebbian LTP may occur in interneurons that are silent during periods of intense pyramidal cell firing, such as sharp waves, and lead to their altered activation during theta activity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3369266/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3369266/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lamsa, Karri P -- Heeroma, Joost H -- Somogyi, Peter -- Rusakov, Dmitri A -- Kullmann, Dimitri M -- 071179/Wellcome Trust/United Kingdom -- G0400627/Medical Research Council/United Kingdom -- G0400627(71256)/Medical Research Council/United Kingdom -- G0400627(76527)/Medical Research Council/United Kingdom -- G0501424/Medical Research Council/United Kingdom -- G0600368/Medical Research Council/United Kingdom -- G0600368(77987)/Medical Research Council/United Kingdom -- MC_U138135973/Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2007 Mar 2;315(5816):1262-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Neurology, University College London, Queen Square, London WC1N 3BG, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17332410" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Electric Stimulation ; Excitatory Postsynaptic Potentials ; Hippocampus/cytology/*physiology ; Interneurons/*physiology ; *Long-Term Potentiation ; Male ; Membrane Potentials ; Neural Inhibition/*physiology ; Patch-Clamp Techniques ; Pyramidal Cells/*physiology ; Rats ; Rats, Sprague-Dawley ; Receptors, AMPA/physiology ; Receptors, N-Methyl-D-Aspartate/physiology ; Spermine/analogs & derivatives/pharmacology ; Synapses/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 58
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    Neuroscience. Rapid consolidation (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-04-07
    Beschreibung: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2271071/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2271071/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Squire, Larry R -- R01 MH024600/MH/NIMH NIH HHS/ -- R01 MH024600-33/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2007 Apr 6;316(5821):57-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉VA Medical Center, San Diego, CA 92161, USA. lsquire@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17412942" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Association Learning ; Cues ; Hippocampus/*physiology ; *Memory ; Mental Recall ; Neocortex/*physiology ; Rats ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Sea anemone genome reveals ancestral eumetazoan gene repertoire and genomic organization (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-07-07
    Beschreibung: Sea anemones are seemingly primitive animals that, along with corals, jellyfish, and hydras, constitute the oldest eumetazoan phylum, the Cnidaria. Here, we report a comparative analysis of the draft genome of an emerging cnidarian model, the starlet sea anemone Nematostella vectensis. The sea anemone genome is complex, with a gene repertoire, exon-intron structure, and large-scale gene linkage more similar to vertebrates than to flies or nematodes, implying that the genome of the eumetazoan ancestor was similarly complex. Nearly one-fifth of the inferred genes of the ancestor are eumetazoan novelties, which are enriched for animal functions like cell signaling, adhesion, and synaptic transmission. Analysis of diverse pathways suggests that these gene "inventions" along the lineage leading to animals were likely already well integrated with preexisting eukaryotic genes in the eumetazoan progenitor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Putnam, Nicholas H -- Srivastava, Mansi -- Hellsten, Uffe -- Dirks, Bill -- Chapman, Jarrod -- Salamov, Asaf -- Terry, Astrid -- Shapiro, Harris -- Lindquist, Erika -- Kapitonov, Vladimir V -- Jurka, Jerzy -- Genikhovich, Grigory -- Grigoriev, Igor V -- Lucas, Susan M -- Steele, Robert E -- Finnerty, John R -- Technau, Ulrich -- Martindale, Mark Q -- Rokhsar, Daniel S -- 5 P41 LM006252-09/LM/NLM NIH HHS/ -- THL007279F/PHS HHS/ -- New York, N.Y. -- Science. 2007 Jul 6;317(5834):86-94.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Energy Joint Genome Institute, Walnut Creek, CA 94598, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17615350" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Biological Evolution ; Cell Adhesion ; Evolution, Molecular ; Genes ; Genetic Linkage ; *Genome ; Genome, Human ; Genomics ; Humans ; Introns ; Metabolic Networks and Pathways ; Multigene Family ; Muscles/physiology ; Nervous System Physiological Phenomena ; Phylogeny ; Sea Anemones/*genetics/metabolism ; Sequence Analysis, DNA ; Signal Transduction ; Synteny
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 60
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    Of aging mice and men (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-10-20
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Richard -- New York, N.Y. -- Science. 2007 Oct 19;318(5849):390; author reply 390.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17947563" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aging/*physiology ; Animals ; Glucuronidase/deficiency/*genetics ; Humans ; Mice ; *Models, Animal ; Signal Transduction ; Vitamin D/*administration & dosage/metabolism ; Wnt Proteins/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 61
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    Neuroscience. Spying on new neurons in the human brain (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-11-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Greg -- New York, N.Y. -- Science. 2007 Nov 9;318(5852):899-900.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17991833" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Adult Stem Cells/chemistry/*cytology ; Animals ; Biomarkers/*analysis ; Brain/cytology/embryology ; Brain Chemistry ; Child ; Fatty Acids/analysis ; Hippocampus/chemistry/*cytology ; Humans ; Magnetic Resonance Spectroscopy/*methods ; Mice ; Rats ; Stem Cells/chemistry/*cytology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Inactivation of the interoceptive insula disrupts drug craving and malaise induced by lithium (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-10-27
    Beschreibung: Addiction profoundly alters motivational circuits so that drugs become powerful reinforcers of behavior. The interoceptive system continuously updates homeostatic and emotional information that are important elements in motivational decisions. We tested the idea that interoceptive information is essential in drug craving and in the behavioral signs of malaise. We inactivated the primary interoceptive cortex in amphetamine-experienced rats, which prevented the urge to seek amphetamine in a place preference task. Interoceptive insula inactivation also blunted the signs of malaise induced by acute lithium administration. Drug-seeking and malaise both induced Fos expression, a marker of neuronal activation, in the insula. We conclude that the insular cortex is a key structure in the perception of bodily needs that provides direction to motivated behaviors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Contreras, Marco -- Ceric, Francisco -- Torrealba, Fernando -- New York, N.Y. -- Science. 2007 Oct 26;318(5850):655-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departamento de Fisiologia, Facultad de Ciencias Biologicas, Pontificia Universidad Catolica de Chile, Santiago 6513677, Chile.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17962567" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amphetamine-Related Disorders/*physiopathology ; Animals ; *Behavior, Addictive ; *Behavior, Animal/drug effects ; Cerebral Cortex/*physiology/physiopathology ; Conditioning (Psychology) ; Dextroamphetamine/administration & dosage ; Fatigue/*chemically induced ; Lidocaine/administration & dosage/pharmacology ; Lithium Chloride/administration & dosage/*pharmacology ; Male ; Motor Activity/*drug effects ; Rats
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 63
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    Demethylation of H3K27 regulates polycomb recruitment and H2A ubiquitination (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-09-01
    Beschreibung: Methylation of histone H3 lysine 27 (H3K27) is a posttranslational modification that is highly correlated with genomic silencing. Here we show that human UTX, a member of the Jumonji C family of proteins, is a di- and trimethyl H3K27 demethylase. UTX occupies the promoters of HOX gene clusters and regulates their transcriptional output by modulating the recruitment of polycomb repressive complex 1 and the monoubiquitination of histone H2A. Moreover, UTX associates with mixed-lineage leukemia (MLL) 2/3 complexes, and during retinoic acid signaling events, the recruitment of the UTX complex to HOX genes results in H3K27 demethylation and a concomitant methylation of H3K4. Our results suggest a concerted mechanism for transcriptional activation in which cycles of H3K4 methylation by MLL2/3 are linked with the demethylation of H3K27 through UTX.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Min Gyu -- Villa, Raffaella -- Trojer, Patrick -- Norman, Jessica -- Yan, Kai-Ping -- Reinberg, Danny -- Di Croce, Luciano -- Shiekhattar, Ramin -- R01CA090758/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2007 Oct 19;318(5849):447-50. Epub 2007 Aug 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wistar Institute, 3601 Spruce Street, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17761849" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cell Differentiation ; Cell Line ; Cell Line, Tumor ; DNA-Binding Proteins/metabolism ; Embryonic Stem Cells ; *Genes, Homeobox ; Histone Demethylases ; Histones/*metabolism ; Humans ; Lysine/*metabolism ; Methylation ; Multigene Family ; Neoplasm Proteins/metabolism ; Nuclear Proteins/genetics/*metabolism ; Polycomb-Group Proteins ; Promoter Regions, Genetic ; Protein Processing, Post-Translational ; Recombinant Proteins/metabolism ; Repressor Proteins/*metabolism ; Signal Transduction ; Transcription, Genetic ; Transcriptional Activation ; Tretinoin/metabolism/pharmacology ; Ubiquitin/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 64
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    Immunology. Eating in to avoid infection (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-10
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reis e Sousa, Caetano -- New York, N.Y. -- Science. 2007 Mar 9;315(5817):1376-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunobiology Laboratory, Cancer Research UK, London Research Institute, Lincoln's Inn Fields Laboratories, 44 Lincoln's Inn Fields, London WC2A 3PX, UK. caetano@cancer.org.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17347432" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Autophagy ; Cytokines/metabolism ; Dendritic Cells/*immunology/physiology/*virology ; Endosomes/immunology/virology ; Histocompatibility Antigens Class I/immunology ; Histocompatibility Antigens Class II/immunology ; Membrane Glycoproteins/immunology/physiology ; Mice ; Mice, Transgenic ; RNA, Viral/*immunology/metabolism ; Rhabdoviridae Infections/*immunology ; Signal Transduction ; Toll-Like Receptor 7/immunology/physiology ; Toll-Like Receptor 9/immunology/physiology ; Toll-Like Receptors/immunology/*physiology ; Vesicular stomatitis Indiana virus/*immunology/physiology ; Virus Replication
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 65
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    Biochemistry. Signaling across the cell membrane (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-11-24
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ranganathan, Rama -- New York, N.Y. -- Science. 2007 Nov 23;318(5854):1253-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Green Center for Systems Biology and Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. rama.ranganathan@utsouthwestern.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18033872" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adrenergic beta-Agonists/chemistry/metabolism ; Adrenergic beta-Antagonists/chemistry/metabolism/pharmacology ; Bacteriophage T4/enzymology ; Binding Sites ; Cell Membrane/chemistry/metabolism ; Immunoglobulin Fab Fragments/metabolism ; Ligands ; Muramidase/chemistry/metabolism ; Propanolamines/chemistry/metabolism ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Receptors, Adrenergic, beta-2/*chemistry/metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Rhodopsin/chemistry/metabolism ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 66
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    Temporal frequency of subthreshold oscillations scales with entorhinal grid cell field spacing (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-24
    Beschreibung: Grid cells in layer II of rat entorhinal cortex fire to spatial locations in a repeating hexagonal grid, with smaller spacing between grid fields for neurons in more dorsal anatomical locations. Data from in vitro whole-cell patch recordings showed differences in frequency of subthreshold membrane potential oscillations in entorhinal neurons that correspond to different positions along the dorsal-to-ventral axis, supporting a model of physiological mechanisms for grid cell responses.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2950607/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2950607/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giocomo, Lisa M -- Zilli, Eric A -- Fransen, Erik -- Hasselmo, Michael E -- DA16454/DA/NIDA NIH HHS/ -- MH60013/MH/NIMH NIH HHS/ -- MH71702/MH/NIMH NIH HHS/ -- P50 MH071702/MH/NIMH NIH HHS/ -- P50 MH071702-01A20004/MH/NIMH NIH HHS/ -- R01 DA016454/DA/NIDA NIH HHS/ -- R01 DA016454-04/DA/NIDA NIH HHS/ -- R01 DA016454-05/DA/NIDA NIH HHS/ -- R01 MH060013/MH/NIMH NIH HHS/ -- R01 MH060013-05/MH/NIMH NIH HHS/ -- R01 MH060013-06/MH/NIMH NIH HHS/ -- R01 MH061492/MH/NIMH NIH HHS/ -- R01 MH061492-05/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2007 Mar 23;315(5819):1719-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Memory and Brain, Department of Psychology, Program in Neuroscience, Boston University, 2 Cummington Street, Boston, MA 02215, USA. giocomo@bu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17379810" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Algorithms ; Animals ; Computer Simulation ; Dendrites/physiology ; Electric Stimulation ; Entorhinal Cortex/*cytology/*physiology ; Female ; In Vitro Techniques ; Male ; Mathematics ; Membrane Potentials ; Models, Neurological ; Movement ; Neurons/cytology/*physiology ; Patch-Clamp Techniques ; Periodicity ; Rats ; Rats, Long-Evans ; Space Perception ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Legumes symbioses: absence of Nod genes in photosynthetic bradyrhizobia (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-06-02
    Beschreibung: Leguminous plants (such as peas and soybeans) and rhizobial soil bacteria are symbiotic partners that communicate through molecular signaling pathways, resulting in the formation of nodules on legume roots and occasionally stems that house nitrogen-fixing bacteria. Nodule formation has been assumed to be exclusively initiated by the binding of bacterial, host-specific lipochito-oligosaccharidic Nod factors, encoded by the nodABC genes, to kinase-like receptors of the plant. Here we show by complete genome sequencing of two symbiotic, photosynthetic, Bradyrhizobium strains, BTAi1 and ORS278, that canonical nodABC genes and typical lipochito-oligosaccharidic Nod factors are not required for symbiosis in some legumes. Mutational analyses indicated that these unique rhizobia use an alternative pathway to initiate symbioses, where a purine derivative may play a key role in triggering nodule formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Giraud, Eric -- Moulin, Lionel -- Vallenet, David -- Barbe, Valerie -- Cytryn, Eddie -- Avarre, Jean-Christophe -- Jaubert, Marianne -- Simon, Damien -- Cartieaux, Fabienne -- Prin, Yves -- Bena, Gilles -- Hannibal, Laure -- Fardoux, Joel -- Kojadinovic, Mila -- Vuillet, Laurie -- Lajus, Aurelie -- Cruveiller, Stephane -- Rouy, Zoe -- Mangenot, Sophie -- Segurens, Beatrice -- Dossat, Carole -- Franck, William L -- Chang, Woo-Suk -- Saunders, Elizabeth -- Bruce, David -- Richardson, Paul -- Normand, Philippe -- Dreyfus, Bernard -- Pignol, David -- Stacey, Gary -- Emerich, David -- Vermeglio, Andre -- Medigue, Claudine -- Sadowsky, Michael -- New York, N.Y. -- Science. 2007 Jun 1;316(5829):1307-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Recherche pour le Developpement, Centre de Cooperation International en Recherche Agronomique pour le Developpement, Institut National de la Recherche Agronomique, Universite Montpellier 2, France. giraud@mpl.ird.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17540897" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acyltransferases/genetics/metabolism ; Amidohydrolases/genetics/metabolism ; Bacterial Proteins/genetics/metabolism ; Bradyrhizobium/*genetics/growth & development/*physiology ; Cytokinins/metabolism ; Fabaceae/*microbiology ; Genes, Bacterial ; Genome, Bacterial ; Genomics ; Lipopolysaccharides/metabolism ; Molecular Sequence Data ; Mutation ; N-Acetylglucosaminyltransferases/genetics/metabolism ; Photosynthesis ; Plant Roots/microbiology ; Plant Stems/*microbiology ; Purines/biosynthesis ; Root Nodules, Plant/microbiology/*physiology ; Signal Transduction ; *Symbiosis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    DUBA: a deubiquitinase that regulates type I interferon production (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-11-10
    Beschreibung: Production of type I interferon (IFN-I) is a critical host defense triggered by pattern-recognition receptors (PRRs) of the innate immune system. Deubiquitinating enzyme A (DUBA), an ovarian tumor domain-containing deubiquitinating enzyme, was discovered in a small interfering RNA-based screen as a regulator of IFN-I production. Reduction of DUBA augmented the PRR-induced IFN-I response, whereas ectopic expression of DUBA had the converse effect. DUBA bound tumor necrosis factor receptor-associated factor 3 (TRAF3), an adaptor protein essential for the IFN-I response. TRAF3 is an E3 ubiquitin ligase that preferentially assembled lysine-63-linked polyubiquitin chains. DUBA selectively cleaved the lysine-63-linked polyubiquitin chains on TRAF3, resulting in its dissociation from the downstream signaling complex containing TANK-binding kinase 1. A discrete ubiquitin interaction motif within DUBA was required for efficient deubiquitination of TRAF3 and optimal suppression of IFN-I. Our data identify DUBA as a negative regulator of innate immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kayagaki, Nobuhiko -- Phung, Qui -- Chan, Salina -- Chaudhari, Ruchir -- Quan, Casey -- O'Rourke, Karen M -- Eby, Michael -- Pietras, Eric -- Cheng, Genhong -- Bazan, J Fernando -- Zhang, Zemin -- Arnott, David -- Dixit, Vishva M -- New York, N.Y. -- Science. 2007 Dec 7;318(5856):1628-32. Epub 2007 Nov 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiological Chemistry, Genentech, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17991829" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Cell Line ; Endopeptidases/*metabolism ; Humans ; Interferon Type I/*biosynthesis/genetics ; Interferon-alpha/genetics ; Molecular Sequence Data ; NF-kappa B/metabolism ; Protein Structure, Tertiary ; RNA, Small Interfering ; Signal Transduction ; TNF Receptor-Associated Factor 3/metabolism ; Toll-Like Receptor 3/metabolism ; Ubiquitin/metabolism ; Ubiquitination
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 69
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    Coactivation of receptor tyrosine kinases affects the response of tumor cells to targeted therapies (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-09-18
    Beschreibung: Targeted therapies that inhibit receptor tyrosine kinases (RTKs) and the downstream phosphatidylinositol 3-kinase (PI3K) signaling pathway have shown promising anticancer activity, but their efficacy in the brain tumor glioblastoma multiforme (GBM) and other solid tumors has been modest. We hypothesized that multiple RTKs are coactivated in these tumors and that redundant inputs drive and maintain downstream signaling, thereby limiting the efficacy of therapies targeting single RTKs. Tumor cell lines, xenotransplants, and primary tumors indeed show multiple concomitantly activated RTKs. Combinations of RTK inhibitors and/or RNA interference, but not single agents, decreased signaling, cell survival, and anchorage-independent growth even in glioma cells deficient in PTEN, a frequently inactivated inhibitor of PI3K. Thus, effective GBM therapy may require combined regimens targeting multiple RTKs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stommel, Jayne M -- Kimmelman, Alec C -- Ying, Haoqiang -- Nabioullin, Roustem -- Ponugoti, Aditya H -- Wiedemeyer, Ruprecht -- Stegh, Alexander H -- Bradner, James E -- Ligon, Keith L -- Brennan, Cameron -- Chin, Lynda -- DePinho, Ronald A -- 5P01CA95616/CA/NCI NIH HHS/ -- R01CA99041/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2007 Oct 12;318(5848):287-90. Epub 2007 Sep 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17872411" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antineoplastic Agents/*pharmacology ; Antineoplastic Combined Chemotherapy Protocols/pharmacology/therapeutic use ; Brain Neoplasms/drug therapy/*enzymology ; Cell Line, Tumor ; Cell Survival ; Enzyme Activation ; Erlotinib Hydrochloride ; Glioblastoma/drug therapy/*enzymology ; Humans ; Indoles/pharmacology ; PTEN Phosphohydrolase/genetics/metabolism ; Phosphatidylinositol 3-Kinases/metabolism ; Phosphorylation ; Piperazines/pharmacology ; Protein Kinase Inhibitors/*pharmacology ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-met ; Quinazolines/pharmacology ; Receptor Protein-Tyrosine Kinases/antagonists & inhibitors/*metabolism ; Receptor, Epidermal Growth Factor/antagonists & inhibitors/metabolism ; Receptors, Growth Factor/metabolism ; Signal Transduction ; Sulfonamides/pharmacology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 70
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    Cancer research. Probing the roots of race and cancer (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-02-03
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, Jennifer -- New York, N.Y. -- Science. 2007 Feb 2;315(5812):592-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17272699" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Africa/epidemiology ; *African Americans/genetics/statistics & numerical data ; African Continental Ancestry Group/genetics/statistics & numerical data ; Animals ; Breast Neoplasms/*ethnology/genetics/mortality/physiopathology ; DNA Methylation ; Environment ; Female ; Health Services Accessibility ; Humans ; Rats ; Social Isolation ; Stress, Physiological/physiopathology ; United States/epidemiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 71
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    Synchrony dynamics during initiation, failure, and rescue of the segmentation clock (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-08-19
    Beschreibung: The "segmentation clock" is thought to coordinate sequential segmentation of the body axis in vertebrate embryos. This clock comprises a multicellular genetic network of synchronized oscillators, coupled by intercellular Delta-Notch signaling. How this synchrony is established and how its loss determines the position of segmentation defects in Delta and Notch mutants are unknown. We analyzed the clock's synchrony dynamics by varying strength and timing of Notch coupling in zebra-fish embryos with techniques for quantitative perturbation of gene function. We developed a physical theory based on coupled phase oscillators explaining the observed onset and rescue of segmentation defects, the clock's robustness against developmental noise, and a critical point beyond which synchrony decays. We conclude that synchrony among these genetic oscillators can be established by simultaneous initiation and self-organization and that the segmentation defect position is determined by the difference between coupling strength and noise.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Riedel-Kruse, Ingmar H -- Muller, Claudia -- Oates, Andrew C -- New York, N.Y. -- Science. 2007 Sep 28;317(5846):1911-5. Epub 2007 Aug 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute of Molecular Cell Biology and Genetics (MPI-CBG), Pfotenhauerstrasse 108, 01307 Dresden, Germany. ingmar@caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17702912" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Biological Clocks/*genetics/physiology ; *Body Patterning/genetics ; Dipeptides/pharmacology ; Embryo, Nonmammalian/metabolism ; *Embryonic Development ; Gene Expression Regulation, Developmental ; Gene Regulatory Networks ; Homeodomain Proteins/genetics/metabolism ; Intracellular Signaling Peptides and Proteins ; Mathematics ; Membrane Proteins/genetics/metabolism ; Mesoderm/physiology ; Mutation ; Nerve Tissue Proteins/genetics/metabolism ; Oligonucleotides, Antisense/pharmacology ; RNA Stability ; Receptor, Notch1/genetics/metabolism ; Signal Transduction ; Somites/physiology ; Zebrafish/*embryology/genetics ; Zebrafish Proteins/genetics/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 72
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    Postreplicative formation of cohesion is required for repair and induced by a single DNA break (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-07-14
    Beschreibung: Sister-chromatid cohesion, established during replication by the protein complex cohesin, is essential for both chromosome segregation and double-strand break (DSB) repair. Normally, cohesion formation is strictly limited to the S phase of the cell cycle, but DSBs can trigger cohesion also after DNA replication has been completed. The function of this damage-induced cohesion remains unknown. In this investigation, we show that damage-induced cohesion is essential for repair in postreplicative cells in yeast. Furthermore, it is established genome-wide after induction of a single DSB, and it is controlled by the DNA damage response and cohesin-regulating factors. We thus define a cohesion establishment pathway that is independent of DNA duplication and acts together with cohesion formed during replication in sister chromatid-based DSB repair.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Strom, Lena -- Karlsson, Charlotte -- Lindroos, Hanna Betts -- Wedahl, Sara -- Katou, Yuki -- Shirahige, Katsuhiko -- Sjogren, Camilla -- New York, N.Y. -- Science. 2007 Jul 13;317(5835):242-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Molecular Biology, Karolinska Institute, 171 77 Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17626884" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acetyltransferases/genetics/metabolism ; Cell Cycle Proteins/metabolism ; Cell Division ; Chromatids/*physiology ; Chromosomal Proteins, Non-Histone/metabolism ; *DNA Breaks, Double-Stranded ; *DNA Repair ; DNA Replication ; DNA, Fungal/biosynthesis/*metabolism ; G2 Phase ; Genome, Fungal ; Intracellular Signaling Peptides and Proteins ; Mutation ; Nuclear Proteins/genetics/metabolism ; Protein-Serine-Threonine Kinases ; Saccharomyces cerevisiae/genetics/metabolism/*physiology ; Saccharomyces cerevisiae Proteins/genetics/metabolism ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Medicine. The yin-yang of sirtuins (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-07-28
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dillin, Andrew -- Kelly, Jeffery W -- New York, N.Y. -- Science. 2007 Jul 27;317(5837):461-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA. dillin@salk.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17656709" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aging ; Animals ; Autophagy ; Cell Line, Tumor ; Disease Models, Animal ; Drosophila melanogaster ; Humans ; Neurodegenerative Diseases/physiopathology ; Parkinson Disease/drug therapy/pathology/*physiopathology ; RNA Interference ; Rats ; Signal Transduction ; Sirtuin 1 ; Sirtuin 2 ; Sirtuins/*antagonists & inhibitors/genetics/metabolism/*physiology ; Transfection ; alpha-Synuclein/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 74
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    Comment on "A centrosome-independent role for gamma-TuRC proteins in the spindle assembly checkpoint" (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-05-19
    Beschreibung: Muller et al. (Reports, 27 October 2006, p. 654) showed that inhibition of the gamma-tubulin ring complex (gamma-TuRC) activates the spindle assembly checkpoint (SAC), which led them to suggest that gamma-TuRC proteins play molecular roles in SAC activation. Because gamma-TuRC inhibition leads to pleiotropic spindle defects, which are well known to activate kinetochore-derived checkpoint signaling, we believe that this conclusion is premature.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2590763/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2590763/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taylor, Stephen S -- Hardwick, Kevin G -- Sawin, Kenneth E -- Biggins, Sue -- Piatti, Simonetta -- Khodjakov, Alexey -- Rieder, Conly L -- Salmon, Edward D -- Musacchio, Andrea -- R01 GM059363/GM/NIGMS NIH HHS/ -- R01 GM059363-09/GM/NIGMS NIH HHS/ -- R37 GM040198/GM/NIGMS NIH HHS/ -- R37 GM040198-23/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 May 18;316(5827):982; author reply 982.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Faculty of Life Sciences, University of Manchester, Manchester, UK. stephen.taylor@manchester.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17510347" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Centrosome/physiology ; Kinetochores/*physiology ; Microtubule-Associated Proteins/antagonists & inhibitors/*metabolism ; Microtubules/*metabolism/ultrastructure ; *Mitosis ; Signal Transduction ; Spindle Apparatus/*metabolism ; Tubulin/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 75
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    Multiple functions of the IKK-related kinase IKKepsilon in interferon-mediated antiviral immunity (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-03
    Beschreibung: IKKepsilon is an IKK (inhibitor of nuclear factor kappaBkinase)-related kinase implicated in virus induction of interferon-beta (IFNbeta). We report that, although mice lacking IKKepsilon produce normal amounts of IFNbeta, they are hypersusceptible to viral infection because of a defect in the IFN signaling pathway. Specifically, a subset of type I IFN-stimulated genes are not activated in the absence of IKKepsilon because the interferon-stimulated gene factor 3 complex (ISGF3) does not bind to promoter elements of the affected genes. We demonstrate that IKKepsilon is activated by IFNbeta and that IKKepsilon directly phosphorylates signal transducer and activator of transcription 1 (STAT1), a component of ISGF3. We conclude that IKKepsilon plays a critical role in the IFN-inducible antiviral transcriptional response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tenoever, Benjamin R -- Ng, Sze-Ling -- Chua, Mark A -- McWhirter, Sarah M -- Garcia-Sastre, Adolfo -- Maniatis, Tom -- F31 AI056678/AI/NIAID NIH HHS/ -- P01AI058113/AI/NIAID NIH HHS/ -- R01AI46954/AI/NIAID NIH HHS/ -- U19AI62623/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2007 Mar 2;315(5816):1274-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17332413" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine Deaminase/genetics/metabolism ; Animals ; Cells, Cultured ; Dimerization ; *Gene Expression Regulation ; I-kappa B Kinase/genetics/*metabolism ; *Influenza A Virus, H1N1 Subtype/immunology/physiology ; Interferon-Stimulated Gene Factor 3/metabolism ; Interferon-beta/*immunology/metabolism ; Lung/pathology/virology ; Mice ; Mice, Knockout ; Orthomyxoviridae Infections/*immunology/metabolism/pathology/virology ; Phosphorylation ; Promoter Regions, Genetic ; RNA-Binding Proteins ; STAT1 Transcription Factor/metabolism ; STAT2 Transcription Factor/metabolism ; Signal Transduction ; Transcription, Genetic ; Viral Load ; Virus Replication
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 76
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    High-speed imaging reveals neurophysiological links to behavior in an animal model of depression (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-07-07
    Beschreibung: The hippocampus is one of several brain areas thought to play a central role in affective behaviors, but the underlying local network dynamics are not understood. We used quantitative voltage-sensitive dye imaging to probe hippocampal dynamics with millisecond resolution in brain slices after bidirectional modulation of affective state in rat models of depression. We found that a simple measure of real-time activity-stimulus-evoked percolation of activity through the dentate gyrus relative to the hippocampal output subfield-accounted for induced changes in animal behavior independent of the underlying mechanism of action of the treatments. Our results define a circuit-level neurophysiological endophenotype for affective behavior and suggest an approach to understanding circuit-level substrates underlying psychiatric disease symptoms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Airan, Raag D -- Meltzer, Leslie A -- Roy, Madhuri -- Gong, Yuqing -- Chen, Han -- Deisseroth, Karl -- New York, N.Y. -- Science. 2007 Aug 10;317(5839):819-23. Epub 2007 Jul 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bioengineering, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17615305" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antidepressive Agents, Tricyclic/pharmacology ; Behavior, Animal/drug effects ; Dentate Gyrus/pathology/*physiopathology ; Depressive Disorder/pathology/*physiopathology ; Diagnostic Imaging ; Disease Models, Animal ; Electric Stimulation ; Electrophysiology ; Female ; Fluoxetine/pharmacology ; Hippocampus/pathology/*physiopathology ; Imipramine/pharmacology ; Motor Activity/drug effects ; Nerve Net/*physiopathology ; Neurons/cytology/physiology ; Rats ; Rats, Inbred F344 ; Serotonin Uptake Inhibitors/pharmacology ; Stress, Physiological/physiopathology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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    Cysteine redox sensor in PKGIa enables oxidant-induced activation (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-08-25
    Beschreibung: Changes in the concentration of oxidants in cells can regulate biochemical signaling mechanisms that control cell function. We have found that guanosine 3',5'-monophosphate (cGMP)-dependent protein kinase (PKG) functions directly as a redox sensor. The Ialpha isoform, PKGIalpha, formed an interprotein disulfide linking its two subunits in cells exposed to exogenous hydrogen peroxide. This oxidation directly activated the kinase in vitro, and in rat cells and tissues. The affinity of the kinase for substrates it phosphorylates was enhanced by disulfide formation. This oxidation-induced activation represents an alternate mechanism for regulation along with the classical activation involving nitric oxide and cGMP. This mechanism underlies cGMP-independent vasorelaxation in response to oxidants in the cardiovascular system and provides a molecular explantion for how hydrogen peroxide can operate as an endothelium-derived hyperpolarizing factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burgoyne, Joseph R -- Madhani, Melanie -- Cuello, Friederike -- Charles, Rebecca L -- Brennan, Jonathan P -- Schroder, Ewald -- Browning, Darren D -- Eaton, Philip -- G0700320/Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2007 Sep 7;317(5843):1393-7. Epub 2007 Aug 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cardiology, Cardiovascular Division, King's College London, Rayne Institute, St. Thomas' Hospital, London SE1 7EH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17717153" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Aorta ; Cell Line ; Cyclic GMP/metabolism ; Cyclic GMP-Dependent Protein Kinase Type I ; Cyclic GMP-Dependent Protein Kinases/genetics/*metabolism ; Cysteine/*metabolism ; Disulfides/metabolism ; Enzyme Activation ; Humans ; Hydrogen Peroxide/metabolism ; Male ; Nitric Oxide/metabolism ; Oxidants/*metabolism ; Oxidation-Reduction ; Oxidative Stress ; Rats ; Rats, Wistar ; Signal Transduction ; Tissue Culture Techniques ; Transfection ; Vasodilation/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 78
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    Combinatorial ShcA docking interactions support diversity in tissue morphogenesis (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-07-14
    Beschreibung: Changes in protein-protein interactions may allow polypeptides to perform unexpected regulatory functions. Mammalian ShcA docking proteins have amino-terminal phosphotyrosine (pTyr) binding (PTB) and carboxyl-terminal Src homology 2 (SH2) domains, which recognize specific pTyr sites on activated receptors, and a central region with two phosphorylated tyrosine-X-asparagine (pYXN) motifs (where X represents any amino acid) that each bind the growth factor receptor-bound protein 2 (Grb2) adaptor. Phylogenetic analysis indicates that ShcA may signal through both pYXN-dependent and -independent pathways. We show that, in mice, cardiomyocyte-expressed ShcA directs mid-gestational heart development by a PTB-dependent mechanism that does not require the pYXN motifs. In contrast, the pYXN motifs are required with PTB and SH2 domains in the same ShcA molecule for the formation of muscle spindles, skeletal muscle sensory organs that regulate motor behavior. Thus, combinatorial differences in ShcA docking interactions may yield multiple signaling mechanisms to support diversity in tissue morphogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2575375/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2575375/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hardy, W Rod -- Li, Lingying -- Wang, Zhi -- Sedy, Jiri -- Fawcett, James -- Frank, Eric -- Kucera, Jan -- Pawson, Tony -- R01 NS024373/NS/NINDS NIH HHS/ -- R01 NS024373-18/NS/NINDS NIH HHS/ -- R01 NS024373-19/NS/NINDS NIH HHS/ -- R01 NS024373-20/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2007 Jul 13;317(5835):251-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute, Mount Sinai Hospital, 600 University Avenue, Toronto, Ontario M5G 1X5, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17626887" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptor Proteins, Signal Transducing/chemistry/genetics/*metabolism ; Amino Acid Motifs ; Animals ; Ataxia ; Excitatory Postsynaptic Potentials ; Genetic Complementation Test ; Heart/*embryology ; Mice ; Mice, Knockout ; *Morphogenesis ; Motor Activity ; Muscle Spindles/*embryology ; Muscle, Skeletal/*embryology/metabolism ; Mutation ; Myocytes, Cardiac/*metabolism ; Neurons, Afferent/physiology ; Phosphorylation ; Protein Structure, Tertiary ; Shc Signaling Adaptor Proteins ; Signal Transduction ; src Homology Domains
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 79
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    Materials science. Polymer therapeutics (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-09-01
    Beschreibung: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2884993/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2884993/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kiick, Kristi L -- P20 RR017716/RR/NCRR NIH HHS/ -- P20 RR017716-010004/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2007 Aug 31;317(5842):1182-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA. kiick@udel.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17761873" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): B-Lymphocytes/immunology ; Drug Carriers ; Drug Delivery Systems ; Drug Design ; Hydrogels ; L-Selectin/metabolism ; Leukocytes/metabolism ; Ligands ; Peptides/chemistry/metabolism/*therapeutic use ; Polymers/chemistry/metabolism/*therapeutic use ; Receptors, Antigen, B-Cell/immunology/metabolism ; Receptors, Cell Surface/metabolism ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 80
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    Schemas and memory consolidation (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-04-07
    Beschreibung: Memory encoding occurs rapidly, but the consolidation of memory in the neocortex has long been held to be a more gradual process. We now report, however, that systems consolidation can occur extremely quickly if an associative "schema" into which new information is incorporated has previously been created. In experiments using a hippocampal-dependent paired-associate task for rats, the memory of flavor-place associations became persistent over time as a putative neocortical schema gradually developed. New traces, trained for only one trial, then became assimilated and rapidly hippocampal-independent. Schemas also played a causal role in the creation of lasting associative memory representations during one-trial learning. The concept of neocortical schemas may unite psychological accounts of knowledge structures with neurobiological theories of systems memory consolidation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tse, Dorothy -- Langston, Rosamund F -- Kakeyama, Masaki -- Bethus, Ingrid -- Spooner, Patrick A -- Wood, Emma R -- Witter, Menno P -- Morris, Richard G M -- G9200370/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2007 Apr 6;316(5821):76-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Cognitive Neuroscience, Centre for Cognitive and Neural Systems, and Centre for Neuroscience Research, University of Edinburgh, 1 George Square, Edinburgh EH8 9JZ, Scotland, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17412951" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Association Learning ; Cues ; Hippocampus/*physiology ; Male ; *Memory ; Mental Recall ; Neocortex/*physiology ; Rats ; Time Factors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 81
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    Plant science. Infectious heresy (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-06-02
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Downie, J Allan -- New York, N.Y. -- Science. 2007 Jun 1;316(5829):1296-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Microbiology, John Innes Centre, Norwich NR4 7UH, UK. allan.downie@bbsrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17540893" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Acyltransferases/genetics/metabolism ; Bacterial Proteins/genetics/metabolism ; Bradyrhizobium/genetics/growth & development/*physiology ; Cytokinins/metabolism ; Fabaceae/*microbiology ; Genes, Bacterial ; Mutation ; N-Acetylglucosaminyltransferases/genetics/metabolism ; *Nitrogen Fixation ; Photosynthesis ; Plant Roots/microbiology ; Plant Stems/microbiology ; Purines/biosynthesis ; Root Nodules, Plant/microbiology/*physiology ; Signal Transduction ; *Symbiosis
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 82
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    An ATP gate controls tubulin binding by the tethered head of kinesin-1 (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-04-07
    Beschreibung: Kinesin-1 is a two-headed molecular motor that walks along microtubules, with each step gated by adenosine triphosphate (ATP) binding. Existing models for the gating mechanism propose a role for the microtubule lattice. We show that unpolymerized tubulin binds to kinesin-1, causing tubulin-activated release of adenosine diphosphate (ADP). With no added nucleotide, each kinesin-1 dimer binds one tubulin heterodimer. In adenylyl-imidodiphosphate (AMP-PNP), a nonhydrolyzable ATP analog, each kinesin-1 dimer binds two tubulin heterodimers. The data reveal an ATP gate that operates independently of the microtubule lattice, by ATP-dependent release of a steric or allosteric block on the tubulin binding site of the tethered kinesin-ADP head.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2504013/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2504013/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alonso, Maria C -- Drummond, Douglas R -- Kain, Susan -- Hoeng, Julia -- Amos, Linda -- Cross, Robert A -- G0200542/Medical Research Council/United Kingdom -- G0200542(63814)/Medical Research Council/United Kingdom -- MC_U105184313/Medical Research Council/United Kingdom -- U.1051.04.002(78842)/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2007 Apr 6;316(5821):120-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Motors Group, Marie Curie Research Institute, The Chart, Oxted, Surrey RH8 0TL, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17412962" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine Diphosphate/metabolism ; Adenosine Triphosphate/*metabolism ; Adenylyl Imidodiphosphate/metabolism ; Animals ; Binding Sites ; Dimerization ; Kinesin/chemistry/*metabolism ; Microtubules/*metabolism ; Models, Biological ; Molecular Motor Proteins/*metabolism ; Neurospora ; Protein Conformation ; Rats ; Recombinant Fusion Proteins/chemistry/metabolism ; Schizosaccharomyces ; Tubulin/chemistry/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 83
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    Asymmetric T lymphocyte division in the initiation of adaptive immune responses (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-03
    Beschreibung: A hallmark of mammalian immunity is the heterogeneity of cell fate that exists among pathogen-experienced lymphocytes. We show that a dividing T lymphocyte initially responding to a microbe exhibits unequal partitioning of proteins that mediate signaling, cell fate specification, and asymmetric cell division. Asymmetric segregation of determinants appears to be coordinated by prolonged interaction between the T cell and its antigen-presenting cell before division. Additionally, the first two daughter T cells displayed phenotypic and functional indicators of being differentially fated toward effector and memory lineages. These results suggest a mechanism by which a single lymphocyte can apportion diverse cell fates necessary for adaptive immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, John T -- Palanivel, Vikram R -- Kinjyo, Ichiko -- Schambach, Felix -- Intlekofer, Andrew M -- Banerjee, Arnob -- Longworth, Sarah A -- Vinup, Kristine E -- Mrass, Paul -- Oliaro, Jane -- Killeen, Nigel -- Orange, Jordan S -- Russell, Sarah M -- Weninger, Wolfgang -- Reiner, Steven L -- AI007532/AI/NIAID NIH HHS/ -- AI042370/AI/NIAID NIH HHS/ -- AI053827/AI/NIAID NIH HHS/ -- AI055428/AI/NIAID NIH HHS/ -- AI061699/AI/NIAID NIH HHS/ -- AI069380/AI/NIAID NIH HHS/ -- CA114114/CA/NCI NIH HHS/ -- CA87812/CA/NCI NIH HHS/ -- DK007066/DK/NIDDK NIH HHS/ -- GM007170/GM/NIGMS NIH HHS/ -- R01 AI061699/AI/NIAID NIH HHS/ -- T32 AI055428/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2007 Mar 23;315(5819):1687-91. Epub 2007 Mar 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Abramson Family Cancer Research Institute and Department of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17332376" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adoptive Transfer ; Animals ; Antigen Presentation ; Antigens, CD/analysis ; Antigens, CD8/analysis ; CD8-Positive T-Lymphocytes/*cytology/*immunology ; Cell Differentiation ; *Cell Division ; Cell Lineage ; Cell Polarity ; Dendritic Cells/immunology ; *Immunologic Memory ; Intracellular Signaling Peptides and Proteins/metabolism ; Listeria monocytogenes/immunology ; Listeriosis/immunology ; Lymphocyte Activation ; Membrane Proteins/analysis ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Mitosis ; Nerve Tissue Proteins/analysis ; Protein Kinase C/metabolism ; Receptors, Antigen, T-Cell/immunology ; Receptors, Interferon/analysis ; Signal Transduction ; T-Lymphocyte Subsets/*cytology/*immunology ; T-Lymphocytes, Helper-Inducer/immunology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 84
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    Regulation of B versus T lymphoid lineage fate decision by the proto-oncogene LRF (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-05-15
    Beschreibung: Hematopoietic stem cells in the bone marrow give rise to lymphoid progenitors, which subsequently differentiate into B and T lymphocytes. Here we show that the proto-oncogene LRF plays an essential role in the B versus T lymphoid cell-fate decision. We demonstrate that LRF is key for instructing early lymphoid progenitors in mice to develop into B lineage cells by repressing T cell-instructive signals produced by the cell-fate signal protein, Notch. We propose a new model for lymphoid lineage commitment, in which LRF acts as a master regulator of the cell's determination of B versus T lineage.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2978506/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2978506/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maeda, Takahiro -- Merghoub, Taha -- Hobbs, Robin M -- Dong, Lin -- Maeda, Manami -- Zakrzewski, Johannes -- van den Brink, Marcel R M -- Zelent, Arthur -- Shigematsu, Hirokazu -- Akashi, Koichi -- Teruya-Feldstein, Julie -- Cattoretti, Giorgio -- Pandolfi, Pier Paolo -- CA-102142/CA/NCI NIH HHS/ -- R01 CA102142/CA/NCI NIH HHS/ -- R01 CA102142-06A1/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2007 May 11;316(5826):860-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Biology and Genetics Program, 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/17495164" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; B-Lymphocytes/*cytology/physiology ; Bone Marrow Cells/cytology ; Cell Lineage ; Cells, Cultured ; DNA-Binding Proteins/*genetics/physiology ; Gene Deletion ; Hematopoietic Stem Cells/*cytology/physiology ; *Lymphopoiesis ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Models, Biological ; *Proto-Oncogenes ; Receptors, Notch/*metabolism ; Signal Transduction ; T-Lymphocytes/*cytology/physiology ; Thymus Gland/cytology ; Transcription Factors/*genetics/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 85
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    A MicroRNA feedback circuit in midbrain dopamine neurons (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-09-01
    Beschreibung: MicroRNAs (miRNAs) are evolutionarily conserved, 18- to 25-nucleotide, non-protein coding transcripts that posttranscriptionally regulate gene expression during development. miRNAs also occur in postmitotic cells, such as neurons in the mammalian central nervous system, but their function is less well characterized. We investigated the role of miRNAs in mammalian midbrain dopaminergic neurons (DNs). We identified a miRNA, miR-133b, that is specifically expressed in midbrain DNs and is deficient in midbrain tissue from patients with Parkinson's disease. miR-133b regulates the maturation and function of midbrain DNs within a negative feedback circuit that includes the paired-like homeodomain transcription factor Pitx3. We propose a role for this feedback circuit in the fine-tuning of dopaminergic behaviors such as locomotion.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2782470/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2782470/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Jongpil -- Inoue, Keiichi -- Ishii, Jennifer -- Vanti, William B -- Voronov, Sergey V -- Murchison, Elizabeth -- Hannon, Gregory -- Abeliovich, Asa -- R01 NS064433/NS/NINDS NIH HHS/ -- R01 NS064433-01/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2007 Aug 31;317(5842):1220-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Pathology and Neurology, Center for Neurobiology and Behavior, and Taub Institute, Columbia University, College of Physicians and Surgeons 15-403, 630 West 168th Street, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17761882" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 3' Untranslated Regions/metabolism ; Aged ; Aged, 80 and over ; Animals ; Cell Differentiation ; Cell Line ; Cells, Cultured ; Dopamine/*metabolism ; Embryonic Stem Cells ; *Feedback, Physiological ; Female ; Gene Expression Regulation ; Homeodomain Proteins/*metabolism ; Humans ; Locomotion ; Male ; Mesencephalon/cytology/*metabolism ; Mice ; MicroRNAs/*metabolism ; Middle Aged ; Models, Biological ; Neurons/cytology/*metabolism ; Parkinson Disease/metabolism ; Rats ; Ribonuclease III/genetics/metabolism ; Transcription Factors/*metabolism ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 86
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    Comment on "Maternal oxytocin triggers a transient inhibitory switch in GABA signaling in the fetal brain during delivery" (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-07-14
    Beschreibung: Tyzio et al. (Reports, 15 December 2006, p. 1788) reported that maternal oxytocin triggers a transient excitatory-to-inhibitory switch of gamma-aminobutyric acid (GABA) signaling during labor, thus protecting the fetal rat brain from anoxic injury. However, a body of evidence supports the possibility that oxytocin is released from the fetal pituitary during delivery, not only from the mother, particularly under conditions of hypoxic stress.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carbillon, Lionel -- New York, N.Y. -- Science. 2007 Jul 13;317(5835):197; author reply 197.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Obstetrics and Gynecology, Assistance Publique-Hopitaux de Paris, Paris 13 University, Hopital Jean Verdier, Avenue du 14 Juillet, 93143 Bondy Cedex, France. lionel.carbillon@jvr.aphp.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17626868" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Animals, Newborn ; Brain/*embryology/metabolism ; Female ; Fetal Hypoxia/physiopathology/prevention & control ; Fetus/*metabolism ; Hippocampus/embryology/metabolism ; Oxytocin/metabolism/*physiology ; *Parturition ; Pituitary Gland/embryology/metabolism ; Pregnancy ; Rats ; *Signal Transduction ; gamma-Aminobutyric Acid/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 87
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    Development. Built to run, not fail (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-17
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oliveri, Paola -- Davidson, Eric H -- HD-37105/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 2007 Mar 16;315(5818):1510-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA. poliveri@caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17363653" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Embryonic Development/*genetics ; *Gene Regulatory Networks ; Genes, Regulator ; Repressor Proteins/genetics/metabolism ; Signal Transduction ; Transcription Factors/genetics/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 88
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    Cell biology. Proteins that promote long life (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-08-04
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Stuart K -- New York, N.Y. -- Science. 2007 Aug 3;317(5838):603-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Developmental Biology and Genetics, Stanford University Medical Center, Stanford, CA 94305-5329, USA. kim@cmgm.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17673641" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aging/*physiology ; Animals ; Caenorhabditis elegans/genetics/*physiology ; Caenorhabditis elegans Proteins/genetics/*metabolism ; Gene Expression Regulation ; Genes, Helminth ; Longevity/*physiology ; Mass Spectrometry ; Metabolic Networks and Pathways ; Models, Animal ; Mutation ; RNA Interference ; Receptor, Insulin/genetics/*metabolism ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 89
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    Promotion of tissue inflammation by the immune receptor Tim-3 expressed on innate immune cells (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-11-17
    Beschreibung: CD4+ T helper 1 (TH1) cells are important mediators of inflammation and are regulated by numerous pathways, including the negative immune receptor Tim-3. We found that Tim-3 is constitutively expressed on cells of the innate immune system in both mice and humans, and that it can synergize with Toll-like receptors. Moreover, an antibody agonist of Tim-3 acted as an adjuvant during induced immune responses, and Tim-3 ligation induced distinct signaling events in T cells and dendritic cells; the latter finding could explain the apparent divergent functions of Tim-3 in these cell types. Thus, by virtue of differential expression on innate versus adaptive immune cells, Tim-3 can either promote or terminate TH1 immunity and may be able to influence a range of inflammatory conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, Ana C -- Anderson, David E -- Bregoli, Lisa -- Hastings, William D -- Kassam, Nasim -- Lei, Charles -- Chandwaskar, Rucha -- Karman, Jozsef -- Su, Ee W -- Hirashima, Mitsuomi -- Bruce, Jeffrey N -- Kane, Lawrence P -- Kuchroo, Vijay K -- Hafler, David A -- R01 AI067544/AI/NIAID NIH HHS/ -- R01 AI067544-01A2/AI/NIAID NIH HHS/ -- R56 AI067544/AI/NIAID NIH HHS/ -- R56 AI067544-01A1/AI/NIAID NIH HHS/ -- R56 AI067544-02/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2007 Nov 16;318(5853):1141-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Immunology, Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18006747" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Antigens, CD11b/immunology ; Astrocytes/immunology ; Central Nervous System Neoplasms/immunology ; Dendritic Cells/immunology ; Encephalomyelitis, Autoimmune, Experimental/immunology ; Galectins/immunology ; Glioblastoma/immunology ; Humans ; Immunity, Innate ; Inflammation Mediators/*immunology ; Lipopolysaccharides/immunology ; Macrophages/immunology ; Membrane Proteins/biosynthesis/*immunology ; Mice ; Microglia/immunology ; Multiple Sclerosis/immunology ; Rats ; Receptors, Immunologic/biosynthesis/*immunology ; Receptors, Virus/biosynthesis/*immunology ; Signal Transduction ; T-Lymphocytes/immunology ; Th1 Cells/*immunology ; Toll-Like Receptors
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 90
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    Cancer. Converging on beta-catenin in Wilms tumor (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-05-19
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nusse, Roel -- New York, N.Y. -- Science. 2007 May 18;316(5827):988-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Howard Hughes Medical Institute, Stanford University, School of Medicine, Stanford, CA 94305-5323, USA. rnusse@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17510350" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adaptor Proteins, Signal Transducing ; Adenomatous Polyposis Coli Protein/metabolism ; Axin Protein ; Cell Nucleus/metabolism ; Chromosomes, Human, X/genetics ; Cytoplasm/metabolism ; Female ; Gene Expression Regulation, Neoplastic ; *Genes, Wilms Tumor ; Humans ; Kidney Neoplasms/*genetics/metabolism ; Male ; Mutation ; Repressor Proteins/metabolism ; Signal Transduction ; Tumor Suppressor Proteins/*genetics/*metabolism ; Wilms Tumor/*genetics/metabolism ; Wnt Proteins/metabolism ; beta Catenin/genetics/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 91
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    LRP6 mutation in a family with early coronary disease and metabolic risk factors (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2007-03-03
    Beschreibung: Coronary artery disease (CAD) is the leading cause of death worldwide and is commonly caused by a constellation of risk factors called the metabolic syndrome. We characterized a family with autosomal dominant early CAD, features of the metabolic syndrome (hyperlipidemia, hypertension, and diabetes), and osteoporosis. These traits showed genetic linkage to a short segment of chromosome 12p, in which we identified a missense mutation in LRP6, which encodes a co-receptor in the Wnt signaling pathway. The mutation, which substitutes cysteine for arginine at a highly conserved residue of an epidermal growth factor-like domain, impairs Wnt signaling in vitro. These results link a single gene defect in Wnt signaling to CAD and multiple cardiovascular risk factors.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2945222/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2945222/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mani, Arya -- Radhakrishnan, Jayaram -- Wang, He -- Mani, Alaleh -- Mani, Mohammad-Ali -- Nelson-Williams, Carol -- Carew, Khary S -- Mane, Shrikant -- Najmabadi, Hossein -- Wu, Dan -- Lifton, Richard P -- K08 HD041481/HD/NICHD NIH HHS/ -- K08 HD041481-01/HD/NICHD NIH HHS/ -- P01DK68229/DK/NIDDK NIH HHS/ -- P50 HL55007/HL/NHLBI NIH HHS/ -- R01 AR051476/AR/NIAMS NIH HHS/ -- R01 AR051476-01A1/AR/NIAMS NIH HHS/ -- R01 AR051476-02/AR/NIAMS NIH HHS/ -- R01 AR051476-03/AR/NIAMS NIH HHS/ -- R01 AR051476-04/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2007 Mar 2;315(5816):1278-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Howard Hughes Medical Institute and Yale University School of Medicine, New Haven, CT 06510, USA. arya.mani@yale.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17332414" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Aged ; Aged, 80 and over ; Amino Acid Substitution ; Animals ; Chromosomes, Human, Pair 12/genetics ; Coronary Disease/*genetics/metabolism ; Family Health ; Female ; Genetic Linkage ; *Genetic Predisposition to Disease ; Humans ; LDL-Receptor Related Proteins/*genetics/physiology ; Lipids/blood ; Low Density Lipoprotein Receptor-Related Protein-6 ; Male ; Metabolic Syndrome X/*genetics/metabolism ; Mice ; Middle Aged ; *Mutation, Missense ; NIH 3T3 Cells ; Osteoporosis/genetics ; Pedigree ; Risk Factors ; Signal Transduction ; Wnt Proteins/metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 92
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    Protein synthesis and neurotrophin-dependent structural plasticity of single dendritic spines (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-03-01
    Beschreibung: Long-term potentiation (LTP) at glutamatergic synapses is considered to underlie learning and memory and is associated with the enlargement of dendritic spines. Because the consolidation of memory and LTP require protein synthesis, it is important to clarify how protein synthesis affects spine enlargement. In rat brain slices, the repetitive pairing of postsynaptic spikes and two-photon uncaging of glutamate at single spines (a spike-timing protocol) produced both immediate and gradual phases of spine enlargement in CA1 pyramidal neurons. The gradual enlargement was strongly dependent on protein synthesis and brain-derived neurotrophic factor (BDNF) action, often associated with spine twitching, and was induced specifically at the spines that were immediately enlarged by the synaptic stimulation. Thus, this spike-timing protocol is an efficient trigger for BDNF secretion and induces protein synthesis-dependent long-term enlargement at the level of single spines.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4218863/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4218863/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tanaka, Jun-Ichi -- Horiike, Yoshihiro -- Matsuzaki, Masanori -- Miyazaki, Takashi -- Ellis-Davies, Graham C R -- Kasai, Haruo -- R01 GM053395/GM/NIGMS NIH HHS/ -- R01 GM053395-12/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2008 Mar 21;319(5870):1683-7. doi: 10.1126/science.1152864. Epub 2008 Feb 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Structural Physiology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18309046" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Action Potentials ; Animals ; Brain-Derived Neurotrophic Factor/*metabolism/pharmacology ; Cells, Cultured ; Dendritic Spines/*physiology/*ultrastructure ; Glutamic Acid/metabolism ; *Neuronal Plasticity ; Patch-Clamp Techniques ; *Protein Biosynthesis ; Protein Synthesis Inhibitors/pharmacology ; Pyramidal Cells/physiology/ultrastructure ; Rats ; Rats, Sprague-Dawley ; Receptor, trkB/metabolism ; Synapses/*physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 93
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    Design logic of a cannabinoid receptor signaling network that triggers neurite outgrowth (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-05-20
    Beschreibung: Cannabinoid receptor 1 (CB1R) regulates neuronal differentiation. To understand the logic underlying decision-making in the signaling network controlling CB1R-induced neurite outgrowth, we profiled the activation of several hundred transcription factors after cell stimulation. We assembled an in silico signaling network by connecting CB1R to 23 activated transcription factors. Statistical analyses of this network predicted a role for the breast cancer 1 protein BRCA1 in neuronal differentiation and a new pathway from CB1R through phosphoinositol 3-kinase to the transcription factor paired box 6 (PAX6). Both predictions were experimentally confirmed. Results of transcription factor activation experiments that used pharmacological inhibitors of kinases revealed a network organization of partial OR gates regulating kinases stacked above AND gates that control transcription factors, which together allow for distributed decision-making in CB1R-induced neurite outgrowth.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2776723/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2776723/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bromberg, Kenneth D -- Ma'ayan, Avi -- Neves, Susana R -- Iyengar, Ravi -- 1 S10 RR0 9145-01/RR/NCRR NIH HHS/ -- 5R24 CA095823-04/CA/NCI NIH HHS/ -- GM072853/GM/NIGMS NIH HHS/ -- GM54508/GM/NIGMS NIH HHS/ -- P50 GM071558/GM/NIGMS NIH HHS/ -- P50 GM071558-01A2/GM/NIGMS NIH HHS/ -- P50 GM071558-01A20007/GM/NIGMS NIH HHS/ -- P50 GM071558-02/GM/NIGMS NIH HHS/ -- P50 GM071558-020007/GM/NIGMS NIH HHS/ -- P50 GM071558-030007/GM/NIGMS NIH HHS/ -- P50-071558/PHS HHS/ -- R01 GM054508/GM/NIGMS NIH HHS/ -- R01 GM054508-21/GM/NIGMS NIH HHS/ -- R01 GM072853/GM/NIGMS NIH HHS/ -- R01 GM072853-04/GM/NIGMS NIH HHS/ -- T32 CA88796/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2008 May 16;320(5878):903-9. doi: 10.1126/science.1152662.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18487186" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; BRCA1 Protein/metabolism ; Cell Differentiation ; Cell Line, Tumor ; Cells, Cultured ; Computational Biology ; Computer Simulation ; Eye Proteins/metabolism ; Hippocampus/cytology ; Homeodomain Proteins/metabolism ; Metabolic Networks and Pathways ; Mice ; Neurites/*physiology ; Neurons/*cytology/metabolism ; Paired Box Transcription Factors/metabolism ; Phosphatidylinositol 3-Kinases/metabolism ; Protein Interaction Mapping ; Rats ; Receptor, Cannabinoid, CB1/*metabolism ; Repressor Proteins/metabolism ; *Signal Transduction ; Transcription Factors/antagonists & inhibitors/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 94
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    Patterning mechanisms of branched organs (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-12-06
    Beschreibung: Branching morphogenesis is one of the earliest events essential for the success of metazoans. By branching out and forming cellular or tissue extensions, cells can maximize their surface area and overcome space constraints posed by organ size. Over the past decade, tremendous progress has been made toward understanding the branching mechanisms of various invertebrate and vertebrate organ systems. Despite their distinct origins, morphologies and functions, different cell and tissue types use a remarkably conserved set of tools to undergo branching morphogenesis. Recent studies have shed important light on the basis of molecular conservation in the formation of branched structures in diverse organs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2645229/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2645229/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lu, Pengfei -- Werb, Zena -- CA057621/CA/NCI NIH HHS/ -- ES012801/ES/NIEHS NIH HHS/ -- R01 CA057621/CA/NCI NIH HHS/ -- R01 CA057621-16A1/CA/NCI NIH HHS/ -- U01 ES012801-06/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 2008 Dec 5;322(5907):1506-9. doi: 10.1126/science.1162783.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anatomy and Program in Developmental Biology, University of California at San Francisco, San Francisco, CA 94143-0452, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19056977" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Blood Vessels/embryology/physiology ; *Body Patterning ; Cell Differentiation ; Epithelium/embryology/physiology ; Genes ; Mesoderm/embryology/physiology ; *Morphogenesis ; Nervous System/embryology ; Neurons/cytology ; *Organogenesis ; Regeneration ; Signal Transduction ; Stem Cells/physiology ; Stromal Cells/physiology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 95
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    Comment on "Genetically determined differences in learning from errors" (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-07-16
    Beschreibung: Klein et al. (Reports, 7 December 2007, p. 1642) used individuals with a polymorphism adjacent to the dopamine receptor 2 gene as naturally occurring models for reduced brain dopamine receptor density in a probabilistic learning task. We raise the concern that this polymorphism resides in the gene for the kinase ANKK1, where it causes a nonconservative amino acid exchange.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lucht, Michael -- Rosskopf, Dieter -- New York, N.Y. -- Science. 2008 Jul 11;321(5886):200; author reply 200. doi: 10.1126/science.1155372.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Hospital for Psychiatry and Psychotherapy, Haus 30, Ernst-Moritz-Arndt University, Greifswald, Stralsund 18437, Germany. lucht@uni-greifswald.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18621654" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alleles ; Brain/metabolism ; Cloning, Molecular ; Humans ; *Learning ; *Polymorphism, Genetic ; Protein-Serine-Threonine Kinases/*genetics/physiology ; Proteins/genetics/physiology ; Receptors, Dopamine D2/*genetics/metabolism ; Signal Transduction
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 96
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    Systems biology. Enlightening Rhythms (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-01-26
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lipan, Ovidiu -- New York, N.Y. -- Science. 2008 Jan 25;319(5862):417-8. doi: 10.1126/science.1154208.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, University of Richmond, Richmond, VA 23173, USA. olipan@richmond.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18218882" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Adaptation, Physiological ; *Feedback, Physiological ; Gene Regulatory Networks ; Glycerol/*metabolism ; Mitogen-Activated Protein Kinases/genetics/metabolism ; *Models, Biological ; Osmolar Concentration ; Osmotic Pressure ; Saccharomyces cerevisiae/genetics/metabolism/*physiology ; Saccharomyces cerevisiae Proteins/genetics/metabolism ; Signal Transduction ; Systems Biology
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 97
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    Tight regulation of unstructured proteins: from transcript synthesis to protein degradation (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-11-29
    Beschreibung: Altered abundance of several intrinsically unstructured proteins (IUPs) has been associated with perturbed cellular signaling that may lead to pathological conditions such as cancer. Therefore, it is important to understand how cells precisely regulate the availability of IUPs. We observed that regulation of transcript clearance, proteolytic degradation, and translational rate contribute to controlling the abundance of IUPs, some of which are present in low amounts and for short periods of time. Abundant phosphorylation and low stochasticity in transcription and translation indicate that the availability of IUPs can be finely tuned. Fidelity in signaling may require that most IUPs be available in appropriate amounts and not present longer than needed.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2803065/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2803065/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gsponer, Jorg -- Futschik, Matthias E -- Teichmann, Sarah A -- Babu, M Madan -- G0600158/Medical Research Council/United Kingdom -- MC_U105161047/Medical Research Council/United Kingdom -- MC_U105185859/Medical Research Council/United Kingdom -- U.1051.04.027.00001.01 (85859)/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2008 Nov 28;322(5906):1365-8. doi: 10.1126/science.1163581.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council (MRC) Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK. jgsponer@mrc-lmb.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19039133" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Cell Cycle ; Computational Biology ; Genes, Fungal ; Humans ; Phosphorylation ; Protein Biosynthesis ; Protein Conformation ; Protein Kinases/metabolism ; Proteome/chemistry ; RNA, Fungal/genetics/metabolism ; RNA, Messenger/genetics/metabolism ; Saccharomyces cerevisiae/chemistry/cytology/genetics/*metabolism ; Saccharomyces cerevisiae Proteins/*chemistry/genetics/*metabolism ; Schizosaccharomyces pombe Proteins/chemistry/metabolism ; Signal Transduction ; Transcription, Genetic
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 98
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    The premetazoan ancestry of cadherins (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-02-16
    Beschreibung: Cadherin-mediated cell adhesion and signaling is essential for metazoan development and yet is absent from all other multicellular organisms. We found cadherin genes at numbers similar to those observed in complex metazoans in one of the closest single-celled relatives of metazoans, the choanoflagellate Monosiga brevicollis. Because the evolution of metazoans from a single-celled ancestor required novel cell adhesion and signaling mechanisms, the discovery of diverse cadherins in choanoflagellates suggests that cadherins may have contributed to metazoan origins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abedin, Monika -- King, Nicole -- New York, N.Y. -- Science. 2008 Feb 15;319(5865):946-8. doi: 10.1126/science.1151084.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology and Center for Integrative Genomics, University of California at Berkeley, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18276888" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Actin Cytoskeleton/metabolism ; Amino Acid Sequence ; Animals ; Base Sequence ; *Biological Evolution ; Cadherins/*chemistry/*genetics/physiology ; Cell Adhesion ; Ciona intestinalis/chemistry ; Cnidaria/chemistry ; Drosophila melanogaster/chemistry ; Eukaryota/*chemistry ; Eukaryotic Cells/*chemistry/physiology ; Mice ; Molecular Sequence Data ; Protein Structure, Tertiary ; Repetitive Sequences, Amino Acid ; Signal Transduction ; Tyrosine/metabolism ; src Homology Domains
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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    A genetic framework for the control of cell division and differentiation in the root meristem (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-11-29
    Beschreibung: Plant growth and development are sustained by meristems. Meristem activity is controlled by auxin and cytokinin, two hormones whose interactions in determining a specific developmental output are still poorly understood. By means of a comprehensive genetic and molecular analysis in Arabidopsis, we show that a primary cytokinin-response transcription factor, ARR1, activates the gene SHY2/IAA3 (SHY2), a repressor of auxin signaling that negatively regulates the PIN auxin transport facilitator genes: thereby, cytokinin causes auxin redistribution, prompting cell differentiation. Conversely, auxin mediates degradation of the SHY2 protein, sustaining PIN activities and cell division. Thus, the cell differentiation and division balance necessary for controlling root meristem size and root growth is the result of the interaction between cytokinin and auxin through a simple regulatory circuit converging on the SHY2 gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dello Ioio, Raffaele -- Nakamura, Kinu -- Moubayidin, Laila -- Perilli, Serena -- Taniguchi, Masatoshi -- Morita, Miyo T -- Aoyama, Takashi -- Costantino, Paolo -- Sabatini, Sabrina -- New York, N.Y. -- Science. 2008 Nov 28;322(5906):1380-4. doi: 10.1126/science.1164147.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dipartimento di Genetica e Biologia Molecolare, Laboratorio di Genomica e Proteomica Funzionale dei Sistemi Modello (FGPL), Universita La Sapienza - Piazzale Aldo Moro 5, 00185 Rome, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19039136" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Arabidopsis/*cytology/genetics/growth & development/metabolism ; Arabidopsis Proteins/*genetics/*metabolism ; Cell Differentiation ; Cell Division ; Cytokinins/genetics/*metabolism ; DNA-Binding Proteins/genetics/*metabolism ; Gene Expression Regulation, Plant ; Genes, Plant ; Indoleacetic Acids/*metabolism ; Membrane Transport Proteins/genetics/metabolism ; Meristem/*cytology/growth & development ; Nuclear Proteins/*genetics/metabolism ; Plant Roots/*cytology/growth & development ; Promoter Regions, Genetic ; Signal Transduction ; Transcription Factors/genetics/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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    Neuroscience. Rules of plasticity (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-01-05
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brecht, Michael -- Schmitz, Dietmar -- New York, N.Y. -- Science. 2008 Jan 4;319(5859):39-40. doi: 10.1126/science.1153231.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Bernstein Center for Computational Neuroscience, Humboldt-University Berlin, 10115 Berlin, Germany. michael.brecht@bccn-berlin.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18174422" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Association Learning ; Calcium/metabolism ; Long-Term Potentiation ; Memory ; Mice ; *Neuronal Plasticity ; Neurons/physiology ; Receptors, Metabotropic Glutamate/metabolism ; Receptors, N-Methyl-D-Aspartate/antagonists & inhibitors/metabolism ; Signal Transduction ; Somatosensory Cortex/cytology/*physiology ; Synapses/*physiology ; Synaptic Membranes/metabolism ; Vibrissae/innervation/physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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