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  • 1
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    Modulation of SIRT1 activity affects clock system [Biochemistry] (2013)
    National Academy of Sciences
    Details
    Publication Date: 2013-02-27
    Description: Circadian rhythms govern a wide variety of physiological and metabolic functions in many organisms, from prokaryotes to humans. We previously reported that silent information regulator 1 (SIRT1), a NAD+-dependent deacetylase, contributes to circadian control. In addition, SIRT1 activity is regulated in a cyclic manner in virtue of the circadian oscillation...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 2
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    Circadian modulation of the liver metabolome [Systems Biology] (2012)
    National Academy of Sciences
    Details
    Publication Date: 2012-04-04
    Description: The circadian clock governs a large array of physiological functions through the transcriptional control of a significant fraction of the genome. Disruption of the clock leads to metabolic disorders, including obesity and diabetes. As food is a potent zeitgeber (ZT) for peripheral clocks, metabolites are implicated as cellular transducers of circadian time for tissues such as the liver. From a comprehensive dataset of over 500 metabolites identified by mass spectrometry, we reveal the coordinate clock-controlled oscillation of many metabolites, including those within the amino acid and carbohydrate metabolic pathways as well as the lipid, nucleotide, and xenobiotic metabolic pathways. Using computational modeling, we present evidence of synergistic nodes between the circadian transcriptome and specific metabolic pathways. Validation of these nodes reveals that diverse metabolic pathways, including the uracil salvage pathway, oscillate in a circadian fashion and in a CLOCK-dependent manner. This integrated map illustrates the coherence within the circadian metabolome, transcriptome, and proteome and how these are connected through specific nodes that operate in concert to achieve metabolic homeostasis.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 3
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    Requirement of Rsk-2 for epidermal growth factor-activated phosphorylation of histone H3 (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-08-07
    Description: During the immediate-early response of mammalian cells to mitogens, histone H3 is rapidly and transiently phosphorylated by one or more unidentified kinases. Rsk-2, a member of the pp90rsk family of kinases implicated in growth control, was required for epidermal growth factor (EGF)-stimulated phosphorylation of H3. RSK-2 mutations in humans are linked to Coffin-Lowry syndrome (CLS). Fibroblasts derived from a CLS patient failed to exhibit EGF-stimulated phosphorylation of H3, although H3 was phosphorylated during mitosis. Introduction of the wild-type RSK-2 gene restored EGF-stimulated phosphorylation of H3 in CLS cells. In addition, disruption of the RSK-2 gene by homologous recombination in murine embryonic stem cells abolished EGF-stimulated phosphorylation of H3. H3 appears to be a direct or indirect target of Rsk-2, suggesting that chromatin remodeling might contribute to mitogen-activated protein kinase-regulated gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sassone-Corsi, P -- Mizzen, C A -- Cheung, P -- Crosio, C -- Monaco, L -- Jacquot, S -- Hanauer, A -- Allis, C D -- GM40922/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Aug 6;285(5429):886-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, CNRS, INSERM, ULP, B. P. 163, 67404 Illkirch-Strasbourg, France. paolosc@igbmc.u-strasbg.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10436156" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Abnormalities, Multiple/genetics/metabolism ; Animals ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Line, Transformed ; Cell Nucleus/metabolism ; Cells, Cultured ; Epidermal Growth Factor/*pharmacology ; Gene Expression Regulation ; Gene Targeting ; Histones/*metabolism ; Humans ; Mice ; Mitosis ; Mutation ; Phosphorylation ; Ribosomal Protein S6 Kinases/genetics/*metabolism ; Signal Transduction ; Stem Cells/cytology/metabolism ; Syndrome
    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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    CREM-dependent transcription in male germ cells controlled by a kinesin (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-21
    Description: ACT is a LIM-only protein expressed exclusively in round spermatids, where it cooperates with transcriptional activator CREM in regulating various postmeiotic genes. Targeted inactivation of CREM leads to a complete block of mouse spermiogenesis. We sought to identify the regulatory steps controlling the functional interplay between CREM and ACT. We found that ACT selectively associates with KIF17b, a kinesin highly expressed in male germ cells. The ACT-KIF17b interaction is restricted to specific stages of spermatogenesis and directly determines the intracellular localization of ACT. Sensitivity to leptomycin B indicates that KIF17b can be actively exported from the nucleus through the Crm1 receptor. Thus, a kinesin directly controls the activity of a transcriptional coactivator by a tight regulation of its intracellular localization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Macho, Betina -- Brancorsini, Stefano -- Fimia, Gian Maria -- Setou, Mitsutoshi -- Hirokawa, Nobutaka -- Sassone-Corsi, Paolo -- New York, N.Y. -- Science. 2002 Dec 20;298(5602):2388-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, B. P. 10142, 67404 Illkirch, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12493914" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Amino Acid Sequence ; Animals ; COS Cells ; Cell Nucleus/metabolism ; Cyclic AMP Response Element Modulator ; Cytoplasm/metabolism ; DNA-Binding Proteins/metabolism ; Fatty Acids, Unsaturated/pharmacology ; Gene Expression Regulation, Developmental ; Karyopherins/metabolism ; Kinesin/chemistry/genetics/*metabolism ; LIM Domain Proteins ; Male ; Mice ; Molecular Motor Proteins/chemistry/genetics/*metabolism ; Molecular Sequence Data ; Promoter Regions, Genetic ; Protein Isoforms/chemistry/genetics/metabolism ; *Receptors, Cytoplasmic and Nuclear ; *Repressor Proteins ; Spermatids/*metabolism ; *Spermatogenesis ; Testis/metabolism ; Transcription Factors/genetics/*metabolism ; *Transcription, Genetic ; Transcriptional Activation ; Transfection
    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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  • 5
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    Circadian control of the NAD+ salvage pathway by CLOCK-SIRT1 (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-03-17
    Description: Many metabolic and physiological processes display circadian oscillations. We have shown that the core circadian regulator, CLOCK, is a histone acetyltransferase whose activity is counterbalanced by the nicotinamide adenine dinucleotide (NAD+)-dependent histone deacetylase SIRT1. Here we show that intracellular NAD+ levels cycle with a 24-hour rhythm, an oscillation driven by the circadian clock. CLOCK:BMAL1 regulates the circadian expression of NAMPT (nicotinamide phosphoribosyltransferase), an enzyme that provides a rate-limiting step in the NAD+ salvage pathway. SIRT1 is recruited to the Nampt promoter and contributes to the circadian synthesis of its own coenzyme. Using the specific inhibitor FK866, we demonstrated that NAMPT is required to modulate circadian gene expression. Our findings in mouse embryo fibroblasts reveal an interlocked transcriptional-enzymatic feedback loop that governs the molecular interplay between cellular metabolism and circadian rhythms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nakahata, Yasukazu -- Sahar, Saurabh -- Astarita, Giuseppe -- Kaluzova, Milota -- Sassone-Corsi, Paolo -- R01-GM081634/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 May 1;324(5927):654-7. doi: 10.1126/science.1170803. Epub 2009 Mar 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19286518" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Acrylamides/pharmacology ; Animals ; Basic Helix-Loop-Helix Transcription Factors/metabolism ; Biological Clocks ; CLOCK Proteins ; Cell Line ; Chromatin Assembly and Disassembly ; *Circadian Rhythm ; Cytokines/antagonists & inhibitors/genetics/*metabolism ; Enzyme Inhibitors/pharmacology ; *Feedback, Physiological ; *Gene Expression Regulation ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Knockout ; NAD/*metabolism ; Niacinamide/metabolism ; Nicotinamide Phosphoribosyltransferase/antagonists & ; inhibitors/genetics/*metabolism ; Piperidines/pharmacology ; Promoter Regions, Genetic ; Sirtuin 1 ; Sirtuins/*metabolism ; Trans-Activators/genetics/*metabolism ; 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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    Unique chromatin remodeling and transcriptional regulation in spermatogenesis (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-06-22
    Description: Most of our knowledge of transcriptional regulation comes from studies in somatic cells. However, increasing evidence reveals that gene regulation mechanisms are different in haploid germ cells. A number of highly specialized strategies operate during spermatogenesis. These include a unique chromatin reorganization program and the use of distinct promoter elements and specific transcription factors. Deciphering the rules governing transcriptional control during spermatogenesis will provide valuable insights of biomedical importance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sassone-Corsi, Paolo -- New York, N.Y. -- Science. 2002 Jun 21;296(5576):2176-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, B. P. 10142, 67404 Illkirch, Strasbourg, France. paolosc@igbmc.u-strasbg.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12077401" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromatin/metabolism/*physiology ; *Gene Expression Regulation, Developmental ; Germ Cells/metabolism/*physiology ; Histones/metabolism ; Male ; Promoter Regions, Genetic ; Protamines/metabolism ; *Spermatogenesis ; Spermatogonia/metabolism/physiology ; Testis/cytology ; Transcription Factors/metabolism ; *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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  • 7
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    Circadian clock control by SUMOylation of BMAL1 (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-08-20
    Description: The molecular machinery that governs circadian rhythmicity is based on clock proteins organized in regulatory feedback loops. Although posttranslational modification of clock proteins is likely to finely control their circadian functions, only limited information is available to date. Here, we show that BMAL1, an essential transcription factor component of the clock mechanism, is SUMOylated on a highly conserved lysine residue (Lys259) in vivo. BMAL1 shows a circadian pattern of SUMOylation that parallels its activation in the mouse liver. SUMOylation of BMAL1 requires and is induced by CLOCK, the heterodimerization partner of BMAL1. Ectopic expression of a SUMO-deficient BMAL1 demonstrates that SUMOylation plays an important role in BMAL1 circadian expression and clock rhythmicity. This reveals an additional level of regulation within the core mechanism of the circadian clock.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cardone, Luca -- Hirayama, Jun -- Giordano, Francesca -- Tamaru, Teruya -- Palvimo, Jorma J -- Sassone-Corsi, Paolo -- New York, N.Y. -- Science. 2005 Aug 26;309(5739):1390-4. Epub 2005 Aug 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genetique et de Biologie Moleculaire et Cellulaire, 1 rue Laurent Fries, 67404 Illkirch, Strasbourg, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16109848" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; CLOCK Proteins ; COS Cells ; Cell Cycle Proteins ; Cell Line ; *Circadian Rhythm ; Dimerization ; Ethylmaleimide/pharmacology ; Gene Expression Regulation ; Liver/metabolism ; Lysine/metabolism ; Mice ; Mutation ; Nuclear Proteins/genetics/metabolism ; Period Circadian Proteins ; Phosphorylation ; Recombinant Fusion Proteins/metabolism ; SUMO-1 Protein/*metabolism ; Trans-Activators/genetics/metabolism ; Transcription Factors/chemistry/genetics/*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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  • 8
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    Stem cells: The clock within (2011)
    Nature Publishing Group (NPG)
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    Publication Date: 2011-12-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aguilar-Arnal, Lorena -- Sassone-Corsi, Paolo -- England -- Nature. 2011 Dec 7;480(7376):185-7. doi: 10.1038/480185a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22158237" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Circadian Clocks/*physiology ; Circadian Rhythm/*physiology ; Female ; Hair Follicle/*cytology ; Male ; Stem Cells/*cytology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 9
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    Physiology. When metabolism and epigenetics converge (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-01-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sassone-Corsi, Paolo -- New York, N.Y. -- Science. 2013 Jan 11;339(6116):148-50. doi: 10.1126/science.1233423.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Epigenetics and Metabolism, Department of Biological Chemistry, University of California, Irvine, CA 92697, USA. psc@uci.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23307727" target="_blank"〉PubMed〈/a〉
    Keywords: 3-Hydroxybutyric Acid/*metabolism ; Animals ; Embryonic Stem Cells/*cytology/*metabolism ; Histone Deacetylase Inhibitors/*metabolism ; Histone Deacetylases/*metabolism ; Histones/*metabolism ; Humans ; Induced Pluripotent Stem Cells/*metabolism ; Kidney/*metabolism ; *Oxidative Stress ; Pluripotent Stem Cells/*metabolism ; S-Adenosylmethionine/*metabolism ; Threonine/*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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  • 10
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    Promoter sequences of eukaryotic protein-coding genes (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-09-19
    Description: In vitro genetic techniques were used to study the sequence requirements for the initiation of specific transcription. Deletion mutants were constructed around the putative promoter of the adenovirus-2 major late and chicken conalbumin genes. Specific transcription in vitro by RNA polymerase B together with a HeLa cell cytoplasmic extract was used as the test for promoter function. With this approach sequences which are essential for the initiation of specific transcription in vitro, were shown to be located between 12 and 32 base pairs upstream from the 5' end of these genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Corden, J -- Wasylyk, B -- Buchwalder, A -- Sassone-Corsi, P -- Kedinger, C -- Chambon, P -- New York, N.Y. -- Science. 1980 Sep 19;209(4463):1406-14.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6251548" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; *Cell Physiological Phenomena ; DNA/genetics ; DNA Restriction Enzymes ; DNA, Recombinant ; DNA-Directed RNA Polymerases/*metabolism ; Eukaryotic Cells/*physiology ; *Operon ; RNA Polymerase II/*metabolism ; RNA, Messenger/genetics ; *Transcription, Genetic
    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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