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  • Cells, Cultured  (6)
  • American Association for the Advancement of Science (AAAS)  (6)
  • American Association for the Advancement of Science
  • American Geophysical Union (AGU)
  • 2000-2004  (6)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (6)
  • American Association for the Advancement of Science
  • American Geophysical Union (AGU)
Years
Year
  • 1
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    A heat-sensitive TRP channel expressed in keratinocytes (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-23
    Description: Mechanical and thermal cues stimulate a specialized group of sensory neurons that terminate in the skin. Three members of the transient receptor potential (TRP) family of channels are expressed in subsets of these neurons and are activated at distinct physiological temperatures. Here, we describe the cloning and characterization of a novel thermosensitive TRP channel. TRPV3 has a unique threshold: It is activated at innocuous (warm) temperatures and shows an increased response at noxious temperatures. TRPV3 is specifically expressed in keratinocytes; hence, skin cells are capable of detecting heat via molecules similar to those in heat-sensing neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peier, Andrea M -- Reeve, Alison J -- Andersson, David A -- Moqrich, Aziz -- Earley, Taryn J -- Hergarden, Anne C -- Story, Gina M -- Colley, Sian -- Hogenesch, John B -- McIntyre, Peter -- Bevan, Stuart -- Patapoutian, Ardem -- New York, N.Y. -- Science. 2002 Jun 14;296(5575):2046-9. Epub 2002 May 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12016205" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Newborn ; Blotting, Northern ; CHO Cells ; Capsaicin/*analogs & derivatives/pharmacology ; *Cation Transport Proteins ; Cell Line ; Cells, Cultured ; Cloning, Molecular ; Cricetinae ; Epidermis/cytology/innervation/metabolism ; Ganglia, Spinal/metabolism ; *Hot Temperature ; Humans ; In Situ Hybridization ; Ion Channels/chemistry/genetics/*metabolism ; Keratinocytes/*metabolism ; Membrane Potentials ; Mice ; Molecular Sequence Data ; Nerve Endings/physiology ; Neurons/physiology ; Patch-Clamp Techniques ; RNA, Messenger/genetics/metabolism ; Ruthenium Red/pharmacology ; Signal Transduction ; Spinal Cord/metabolism ; TRPV Cation Channels ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    G-protein signaling through tubby proteins (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-05-26
    Description: Dysfunction of the tubby protein results in maturity-onset obesity in mice. Tubby has been implicated as a transcription regulator, but details of the molecular mechanism underlying its function remain unclear. Here we show that tubby functions in signal transduction from heterotrimeric GTP-binding protein (G protein)-coupled receptors. Tubby localizes to the plasma membrane by binding phosphatidylinositol 4,5-bisphosphate through its carboxyl terminal "tubby domain." X-ray crystallography reveals the atomic-level basis of this interaction and implicates tubby domains as phosphorylated-phosphatidyl- inositol binding factors. Receptor-mediated activation of G protein alphaq (Galphaq) releases tubby from the plasma membrane through the action of phospholipase C-beta, triggering translocation of tubby to the cell nucleus. The localization of tubby-like protein 3 (TULP3) is similarly regulated. These data suggest that tubby proteins function as membrane-bound transcription regulators that translocate to the nucleus in response to phosphoinositide hydrolysis, providing a direct link between G-protein signaling and the regulation of gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Santagata, S -- Boggon, T J -- Baird, C L -- Gomez, C A -- Zhao, J -- Shan, W S -- Myszka, D G -- Shapiro, L -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2041-50. Epub 2001 May 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ruttenberg Cancer Center, Structural Biology Program, Department of Physiology and Biophysics, Mount Sinai School of Medicine of New York University, 1425 Madison Avenue New York, NY 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11375483" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; Cell Membrane/metabolism ; Cell Nucleus/*metabolism ; Cells, Cultured ; Crystallography, X-Ray ; GTP-Binding Protein alpha Subunits, Gq-G11 ; Gene Expression Regulation ; Heterotrimeric GTP-Binding Proteins/*metabolism ; Humans ; Isoenzymes/*metabolism ; Membrane Lipids/metabolism ; Mice ; Models, Biological ; Molecular Sequence Data ; Nuclear Localization Signals ; Obesity/genetics/metabolism ; Phosphatidylinositol 4,5-Diphosphate/*metabolism ; Phosphatidylinositol Phosphates/metabolism ; Phospholipase C beta ; Phosphorylation ; Protein Structure, Tertiary ; Proteins/chemistry/genetics/*metabolism ; Receptor, Serotonin, 5-HT2C ; Receptors, Muscarinic/metabolism ; Receptors, Serotonin/metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; Transcription Factors/chemistry/genetics/*metabolism ; Type C Phospholipases/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Recruitment of HIV and its receptors to dendritic cell-T cell junctions (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-06
    Description: Monocyte-derived dendritic cells (MDDCs) can efficiently bind and transfer HIV infectivity without themselves becoming infected. Using live-cell microscopy, we found that HIV was recruited to sites of cell contact in MDDCs. Analysis of conjugates between MDDCs and T cells revealed that, in the absence of antigen-specific signaling, the HIV receptors CD4, CCR5, and CXCR4 on the T cell were recruited to the interface while the MDDCs concentrated HIV to the same region. We propose that contact between dendritic cells and T cells facilitates transmission of HIV by locally concentrating virus, receptor, and coreceptor during the formation of an infectious synapse.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McDonald, David -- Wu, Li -- Bohks, Stacy M -- KewalRamani, Vineet N -- Unutmaz, Derya -- Hope, Thomas J -- R01 AI052051/AI/NIAID NIH HHS/ -- R01-AI47770/AI/NIAID NIH HHS/ -- R01-AI49131/AI/NIAID NIH HHS/ -- R01-AI52051/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2003 May 23;300(5623):1295-7. Epub 2003 May 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of Illinois, Chicago, IL 60612, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730499" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, CD4/metabolism ; CD4-Positive T-Lymphocytes/physiology/ultrastructure/*virology ; Cell Adhesion ; Cell Membrane/virology ; Cells, Cultured ; Coculture Techniques ; Dendritic Cells/physiology/ultrastructure/*virology ; Fluorescent Antibody Technique ; Gene Products, vpr/analysis ; Green Fluorescent Proteins ; HIV-1/*physiology ; Humans ; Intercellular Junctions/physiology/*virology ; Lipopolysaccharides/pharmacology ; Luciferases/analysis ; Luminescent Proteins/analysis ; Models, Biological ; Monocytes ; Receptors, CCR5/metabolism ; Receptors, CXCR4/metabolism ; Receptors, HIV/*metabolism ; Virion/physiology ; vpr Gene Products, Human Immunodeficiency Virus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Induction of direct antimicrobial activity through mammalian toll-like receptors (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-27
    Description: The mammalian innate immune system retains from Drosophila a family of homologous Toll-like receptors (TLRs) that mediate responses to microbial ligands. Here, we show that TLR2 activation leads to killing of intracellular Mycobacterium tuberculosis in both mouse and human macrophages, through distinct mechanisms. In mouse macrophages, bacterial lipoprotein activation of TLR2 leads to a nitric oxide-dependent killing of intracellular tubercle bacilli, but in human monocytes and alveolar macrophages, this pathway was nitric oxide-independent. Thus, mammalian TLRs respond (as Drosophila Toll receptors do) to microbial ligands and also have the ability to activate antimicrobial effector pathways at the site of infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thoma-Uszynski, S -- Stenger, S -- Takeuchi, O -- Ochoa, M T -- Engele, M -- Sieling, P A -- Barnes, P F -- Rollinghoff, M -- Bolcskei, P L -- Wagner, M -- Akira, S -- Norgard, M V -- Belisle, J T -- Godowski, P J -- Bloom, B R -- Modlin, R L -- AI 07118/AI/NIAID NIH HHS/ -- AI 22553/AI/NIAID NIH HHS/ -- AI 47868/AI/NIAID NIH HHS/ -- AR 40312/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Feb 23;291(5508):1544-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Dermatology, Department of Microbiology and Immunology and Molecular Biology Institute, UCLA School of Medicine, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11222859" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/immunology ; Cell Line ; Cells, Cultured ; *Drosophila Proteins ; Humans ; Interferon-gamma/immunology/pharmacology ; Ligands ; Lipoproteins/*immunology ; Macrophage Activation ; Macrophages/immunology/metabolism/*microbiology ; Macrophages, Alveolar/immunology/metabolism/microbiology ; Macrophages, Peritoneal/immunology/metabolism/microbiology ; Membrane Glycoproteins/*metabolism ; Mice ; Monocytes/immunology/metabolism/*microbiology ; Mycobacterium tuberculosis/growth & development/*immunology ; Nitric Oxide/*metabolism ; Nitric Oxide Synthase/antagonists & inhibitors/metabolism ; Nitric Oxide Synthase Type II ; Receptors, Cell Surface/*metabolism ; Signal Transduction ; Toll-Like Receptor 2 ; Toll-Like Receptors ; Tumor Necrosis Factor-alpha/immunology/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    A stem cell molecular signature (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-09-14
    Description: Mechanisms regulating self-renewal and cell fate decisions in mammalian stem cells are poorly understood. We determined global gene expression profiles for mouse and human hematopoietic stem cells and other stages of the hematopoietic hierarchy. Murine and human hematopoietic stem cells share a number of expressed gene products, which define key conserved regulatory pathways in this developmental system. Moreover, in the mouse, a portion of the genetic program of hematopoietic stem cells is shared with embryonic and neural stem cells. This overlapping set of gene products represents a molecular signature of stem cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ivanova, Natalia B -- Dimos, John T -- Schaniel, Christoph -- Hackney, Jason A -- Moore, Kateri A -- Lemischka, Ihor R -- DK42989/DK/NIDDK NIH HHS/ -- DK54493/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2002 Oct 18;298(5593):601-4. Epub 2002 Sep 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12228721" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Cell Communication ; Cell Cycle ; Cell Differentiation ; Cell Line ; Cell Lineage ; Cell Separation ; Cells, Cultured ; Computational Biology ; Embryo, Mammalian/cytology ; Expressed Sequence Tags ; *Gene Expression ; *Gene Expression Profiling ; Genes, Homeobox ; Hematopoiesis ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/*physiology ; Humans ; Mice ; Neurons/cytology ; Oligonucleotide Array Sequence Analysis ; Signal Transduction ; Stem Cells/*physiology ; Totipotent Stem Cells/*physiology ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    BAX and BAK regulation of endoplasmic reticulum Ca2+: a control point for apoptosis (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-03-08
    Description: BAX and BAK are "multidomain" proapoptotic proteins that initiate mitochondrial dysfunction but also localize to the endoplasmic reticulum (ER). Mouse embryonic fibroblasts deficient for BAX and BAK (DKO cells) were found to have a reduced resting concentration of calcium in the ER ([Ca2+]er) that results in decreased uptake of Ca2+ by mitochondria after Ca2+ release from the ER. Expression of SERCA (sarcoplasmic-endoplasmic reticulum Ca2+ adenosine triphosphatase) corrected [Ca2+]er and mitochondrial Ca2+ uptake in DKO cells, restoring apoptotic death in response to agents that release Ca2+ from intracellular stores (such as arachidonic acid, C2-ceramide, and oxidative stress). In contrast, targeting of BAX to mitochondria selectively restored apoptosis to "BH3-only" signals. A third set of stimuli, including many intrinsic signals, required both ER-released Ca2+ and the presence of mitochondrial BAX or BAK to fully restore apoptosis. Thus, BAX and BAK operate in both the ER and mitochondria as an essential gateway for selected apoptotic signals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scorrano, Luca -- Oakes, Scott A -- Opferman, Joseph T -- Cheng, Emily H -- Sorcinelli, Mia D -- Pozzan, Tullio -- Korsmeyer, Stanley J -- R37CA50239/CA/NCI NIH HHS/ -- T32HL07627/HL/NHLBI NIH HHS/ -- TCP02016/Telethon/Italy -- New York, N.Y. -- Science. 2003 Apr 4;300(5616):135-9. Epub 2003 Mar 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Department of Pathology and Medicine, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12624178" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Arachidonic Acid/pharmacology ; Calcium/*metabolism ; Calcium Signaling ; Calcium-Transporting ATPases/metabolism ; Cell Fractionation ; Cell Line, Transformed ; Cells, Cultured ; Endoplasmic Reticulum/*metabolism ; Histamine/pharmacology ; Hydrogen Peroxide/pharmacology ; Ionomycin/pharmacology ; Membrane Proteins/*metabolism ; Mice ; Mice, Knockout ; Microscopy, Confocal ; Microscopy, Immunoelectron ; Mitochondria/metabolism ; Proto-Oncogene Proteins/*metabolism ; *Proto-Oncogene Proteins c-bcl-2 ; Recombinant Fusion Proteins/metabolism ; Sarcoplasmic Reticulum Calcium-Transporting ATPases ; Sphingosine/*analogs & derivatives/pharmacology ; bcl-2 Homologous Antagonist-Killer Protein ; bcl-2-Associated X Protein
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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