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  • 11
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    The Ectocarpus genome and the independent evolution of multicellularity in brown algae (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-06-04
    Description: Brown algae (Phaeophyceae) are complex photosynthetic organisms with a very different evolutionary history to green plants, to which they are only distantly related. These seaweeds are the dominant species in rocky coastal ecosystems and they exhibit many interesting adaptations to these, often harsh, environments. Brown algae are also one of only a small number of eukaryotic lineages that have evolved complex multicellularity (Fig. 1). We report the 214 million base pair (Mbp) genome sequence of the filamentous seaweed Ectocarpus siliculosus (Dillwyn) Lyngbye, a model organism for brown algae, closely related to the kelps (Fig. 1). Genome features such as the presence of an extended set of light-harvesting and pigment biosynthesis genes and new metabolic processes such as halide metabolism help explain the ability of this organism to cope with the highly variable tidal environment. The evolution of multicellularity in this lineage is correlated with the presence of a rich array of signal transduction genes. Of particular interest is the presence of a family of receptor kinases, as the independent evolution of related molecules has been linked with the emergence of multicellularity in both the animal and green plant lineages. The Ectocarpus genome sequence represents an important step towards developing this organism as a model species, providing the possibility to combine genomic and genetic approaches to explore these and other aspects of brown algal biology further.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cock, J Mark -- Sterck, Lieven -- Rouze, Pierre -- Scornet, Delphine -- Allen, Andrew E -- Amoutzias, Grigoris -- Anthouard, Veronique -- Artiguenave, Francois -- Aury, Jean-Marc -- Badger, Jonathan H -- Beszteri, Bank -- Billiau, Kenny -- Bonnet, Eric -- Bothwell, John H -- Bowler, Chris -- Boyen, Catherine -- Brownlee, Colin -- Carrano, Carl J -- Charrier, Benedicte -- Cho, Ga Youn -- Coelho, Susana M -- Collen, Jonas -- Corre, Erwan -- Da Silva, Corinne -- Delage, Ludovic -- Delaroque, Nicolas -- Dittami, Simon M -- Doulbeau, Sylvie -- Elias, Marek -- Farnham, Garry -- Gachon, Claire M M -- Gschloessl, Bernhard -- Heesch, Svenja -- Jabbari, Kamel -- Jubin, Claire -- Kawai, Hiroshi -- Kimura, Kei -- Kloareg, Bernard -- Kupper, Frithjof C -- Lang, Daniel -- Le Bail, Aude -- Leblanc, Catherine -- Lerouge, Patrice -- Lohr, Martin -- Lopez, Pascal J -- Martens, Cindy -- Maumus, Florian -- Michel, Gurvan -- Miranda-Saavedra, Diego -- Morales, Julia -- Moreau, Herve -- Motomura, Taizo -- Nagasato, Chikako -- Napoli, Carolyn A -- Nelson, David R -- Nyvall-Collen, Pi -- Peters, Akira F -- Pommier, Cyril -- Potin, Philippe -- Poulain, Julie -- Quesneville, Hadi -- Read, Betsy -- Rensing, Stefan A -- Ritter, Andres -- Rousvoal, Sylvie -- Samanta, Manoj -- Samson, Gaelle -- Schroeder, Declan C -- Segurens, Beatrice -- Strittmatter, Martina -- Tonon, Thierry -- Tregear, James W -- Valentin, Klaus -- von Dassow, Peter -- Yamagishi, Takahiro -- Van de Peer, Yves -- Wincker, Patrick -- England -- Nature. 2010 Jun 3;465(7298):617-21. doi: 10.1038/nature09016.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UPMC Universite Paris 6, The Marine Plants and Biomolecules Laboratory, UMR 7139, Station Biologique de Roscoff, Place Georges Teissier, BP74, 29682 Roscoff Cedex, France. cock@sb-roscoff.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20520714" target="_blank"〉PubMed〈/a〉
    Keywords: Algal Proteins/*genetics ; Animals ; *Biological Evolution ; Eukaryota ; Evolution, Molecular ; Genome/*genetics ; Molecular Sequence Data ; Phaeophyta/*cytology/*genetics/metabolism ; Phylogeny ; Pigments, Biological/biosynthesis ; Signal Transduction/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 12
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    Proviral silencing in embryonic stem cells requires the histone methyltransferase ESET (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-02-19
    Description: Endogenous retroviruses (ERVs), retrovirus-like elements with long terminal repeats, are widely dispersed in the euchromatic compartment in mammalian cells, comprising approximately 10% of the mouse genome. These parasitic elements are responsible for 〉10% of spontaneous mutations. Whereas DNA methylation has an important role in proviral silencing in somatic and germ-lineage cells, an additional DNA-methylation-independent pathway also functions in embryonal carcinoma and embryonic stem (ES) cells to inhibit transcription of the exogenous gammaretrovirus murine leukaemia virus (MLV). Notably, a recent genome-wide study revealed that ERVs are also marked by histone H3 lysine 9 trimethylation (H3K9me3) and H4K20me3 in ES cells but not in mouse embryonic fibroblasts. However, the role that these marks have in proviral silencing remains unexplored. Here we show that the H3K9 methyltransferase ESET (also called SETDB1 or KMT1E) and the Kruppel-associated box (KRAB)-associated protein 1 (KAP1, also called TRIM28) are required for H3K9me3 and silencing of endogenous and introduced retroviruses specifically in mouse ES cells. Furthermore, whereas ESET enzymatic activity is crucial for HP1 binding and efficient proviral silencing, the H4K20 methyltransferases Suv420h1 and Suv420h2 are dispensable for silencing. Notably, in DNA methyltransferase triple knockout (Dnmt1(-/-)Dnmt3a(-/-)Dnmt3b(-/-)) mouse ES cells, ESET and KAP1 binding and ESET-mediated H3K9me3 are maintained and ERVs are minimally derepressed. We propose that a DNA-methylation-independent pathway involving KAP1 and ESET/ESET-mediated H3K9me3 is required for proviral silencing during the period early in embryogenesis when DNA methylation is dynamically reprogrammed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsui, Toshiyuki -- Leung, Danny -- Miyashita, Hiroki -- Maksakova, Irina A -- Miyachi, Hitoshi -- Kimura, Hiroshi -- Tachibana, Makoto -- Lorincz, Matthew C -- Shinkai, Yoichi -- 77805/Canadian Institutes of Health Research/Canada -- 92090/Canadian Institutes of Health Research/Canada -- England -- Nature. 2010 Apr 8;464(7290):927-31. doi: 10.1038/nature08858. Epub 2010 Feb 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Research Center for Infectious Diseases, Institute for Virus Research, Kyoto University, 53 Shogoin, Kawara-cho, Sakyo-ku, Kyoto 606-8507, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20164836" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; DNA (Cytosine-5-)-Methyltransferase/deficiency/genetics/metabolism ; DNA Methylation/genetics ; Embryonic Stem Cells/*enzymology/metabolism/*virology ; Endogenous Retroviruses/*genetics ; Fibroblasts ; Gene Deletion ; *Gene Silencing ; Histone-Lysine N-Methyltransferase/deficiency/genetics/*metabolism ; Mice ; Nuclear Proteins/metabolism ; Protein Methyltransferases/deficiency/genetics/*metabolism ; Proviruses/*genetics ; Repressor Proteins/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 13
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    Uptake through glycoprotein 2 of FimH(+) bacteria by M cells initiates mucosal immune response (2009)
    Nature Publishing Group (NPG)
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    Publication Date: 2009-11-13
    Description: The mucosal immune system forms the largest part of the entire immune system, containing about three-quarters of all lymphocytes and producing grams of secretory IgA daily to protect the mucosal surface from pathogens. To evoke the mucosal immune response, antigens on the mucosal surface must be transported across the epithelial barrier into organized lymphoid structures such as Peyer's patches. This function, called antigen transcytosis, is mediated by specialized epithelial M cells. The molecular mechanisms promoting this antigen uptake, however, are largely unknown. Here we report that glycoprotein 2 (GP2), specifically expressed on the apical plasma membrane of M cells among enterocytes, serves as a transcytotic receptor for mucosal antigens. Recombinant GP2 protein selectively bound a subset of commensal and pathogenic enterobacteria, including Escherichia coli and Salmonella enterica serovar Typhimurium (S. Typhimurium), by recognizing FimH, a component of type I pili on the bacterial outer membrane. Consistently, these bacteria were colocalized with endogenous GP2 on the apical plasma membrane as well as in cytoplasmic vesicles in M cells. Moreover, deficiency of bacterial FimH or host GP2 led to defects in transcytosis of type-I-piliated bacteria through M cells, resulting in an attenuation of antigen-specific immune responses in Peyer's patches. GP2 is therefore a previously unrecognized transcytotic receptor on M cells for type-I-piliated bacteria and is a prerequisite for the mucosal immune response to these bacteria. Given that M cells are considered a promising target for oral vaccination against various infectious diseases, the GP2-dependent transcytotic pathway could provide a new target for the development of M-cell-targeted mucosal vaccines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hase, Koji -- Kawano, Kazuya -- Nochi, Tomonori -- Pontes, Gemilson Soares -- Fukuda, Shinji -- Ebisawa, Masashi -- Kadokura, Kazunori -- Tobe, Toru -- Fujimura, Yumiko -- Kawano, Sayaka -- Yabashi, Atsuko -- Waguri, Satoshi -- Nakato, Gaku -- Kimura, Shunsuke -- Murakami, Takaya -- Iimura, Mitsutoshi -- Hamura, Kimiyo -- Fukuoka, Shin-Ichi -- Lowe, Anson W -- Itoh, Kikuji -- Kiyono, Hiroshi -- Ohno, Hiroshi -- DK43294/DK/NIDDK NIH HHS/ -- DK56339/DK/NIDDK NIH HHS/ -- England -- Nature. 2009 Nov 12;462(7270):226-30. doi: 10.1038/nature08529.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Epithelial Immunobiology, Research Center for Allergy and Immunology, RIKEN, Kanagawa 230-0045, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19907495" target="_blank"〉PubMed〈/a〉
    Keywords: Adhesins, Escherichia coli/genetics/immunology/*metabolism ; Animals ; Antigens, Bacterial/genetics/immunology/*metabolism ; Cell Line ; Epithelial Cells/*immunology/metabolism ; Escherichia coli/immunology/metabolism ; Fimbriae Proteins/genetics/immunology/*metabolism ; GPI-Linked Proteins ; Glycoproteins ; HeLa Cells ; Humans ; Immunity, Mucosal/*immunology ; Intestines/cytology ; Membrane Glycoproteins/*metabolism ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Peyer's Patches/*cytology/immunology ; Salmonella typhimurium/genetics/immunology/metabolism ; Substrate Specificity
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 14
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    Hypoxia fate mapping identifies cycling cardiomyocytes in the adult heart (2015)
    Nature Publishing Group (NPG)
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    Publication Date: 2015-06-23
    Description: Although the adult mammalian heart is incapable of meaningful functional recovery following substantial cardiomyocyte loss, it is now clear that modest cardiomyocyte turnover occurs in adult mouse and human hearts, mediated primarily by proliferation of pre-existing cardiomyocytes. However, fate mapping of these cycling cardiomyocytes has not been possible thus far owing to the lack of identifiable genetic markers. In several organs, stem or progenitor cells reside in relatively hypoxic microenvironments where the stabilization of the hypoxia-inducible factor 1 alpha (Hif-1alpha) subunit is critical for their maintenance and function. Here we report fate mapping of hypoxic cells and their progenies by generating a transgenic mouse expressing a chimaeric protein in which the oxygen-dependent degradation (ODD) domain of Hif-1alpha is fused to the tamoxifen-inducible CreERT2 recombinase. In mice bearing the creERT2-ODD transgene driven by either the ubiquitous CAG promoter or the cardiomyocyte-specific alpha myosin heavy chain promoter, we identify a rare population of hypoxic cardiomyocytes that display characteristics of proliferative neonatal cardiomyocytes, such as smaller size, mononucleation and lower oxidative DNA damage. Notably, these hypoxic cardiomyocytes contributed widely to new cardiomyocyte formation in the adult heart. These results indicate that hypoxia signalling is an important hallmark of cycling cardiomyocytes, and suggest that hypoxia fate mapping can be a powerful tool for identifying cycling cells in adult mammals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kimura, Wataru -- Xiao, Feng -- Canseco, Diana C -- Muralidhar, Shalini -- Thet, SuWannee -- Zhang, Helen M -- Abderrahman, Yezan -- Chen, Rui -- Garcia, Joseph A -- Shelton, John M -- Richardson, James A -- Ashour, Abdelrahman M -- Asaithamby, Aroumougame -- Liang, Hanquan -- Xing, Chao -- Lu, Zhigang -- Zhang, Cheng Cheng -- Sadek, Hesham A -- I01 BX000446/BX/BLRD VA/ -- R01 HL108104/HL/NHLBI NIH HHS/ -- England -- Nature. 2015 Jul 9;523(7559):226-30. doi: 10.1038/nature14582. Epub 2015 Jun 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA [2] Life Science Center, Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8577, Japan. ; Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Departments of Physiology and Developmental Biology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; 1] Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA [2] Department of Medicine, VA North Texas Health Care System, 4600 South Lancaster Road, Dallas, Texas 75216, USA. ; 1] Department of Molecular Biology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA [2] Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Department of Radiation Oncology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; McDermott Center for Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; 1] Department of Internal Medicine, Division of Cardiology, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA [2] Hamon Center for Regenerative Science and Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26098368" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Hypoxia ; Cell Proliferation/genetics ; Female ; Hypoxia-Inducible Factor 1, alpha Subunit/genetics/metabolism ; Male ; Mice ; Mice, Transgenic ; Myocardium/*cytology ; Myocytes, Cardiac/*cytology/metabolism ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/genetics/*metabolism ; Recombinases/genetics/metabolism ; Signal Transduction ; Stem Cells/cytology/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 15
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    Molecular cloning of the Bombyx mori prothoracicotropic hormone (1990)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1990-03-16
    Description: Prothoracicotropic hormone (PTTH), a brain secretory polypeptide of insects, stimulates the prothoracic glands to produce and release ecdysone, the steroid essential to insect development. The complementary DNAs encoding PTTH of the silkmoth Bombyx mori were cloned and characterized, and the complete amino acid sequence was deduced. The data indicated that PTTH is first synthesized as a 224-amino acid polypeptide precursor containing three proteolytic cleavage signals. The carboxyl-terminal component (109 amino acids) that follows the last cleavage signal represents one PTTH subunit. Two PTTH subunits are linked together by disulfide bonds, before or after cleavage from prepro-PTTH, to form a homodimeric PTTH. When introduced into Escherichia coli cells, the complementary DNA directed the expression of an active substance that was functionally indistinguishable from natural PTTH. In situ hybridization showed the localization of the prepro-PTTH mRNA to two dorsolateral neurosecretory cells of the Bombyx brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kawakami, A -- Kataoka, H -- Oka, T -- Mizoguchi, A -- Kimura-Kawakami, M -- Adachi, T -- Iwami, M -- Nagasawa, H -- Suzuki, A -- Ishizaki, H -- New York, N.Y. -- Science. 1990 Mar 16;247(4948):1333-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, School of Science, Nagoya University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2315701" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Bombyx/*genetics/physiology ; Cloning, Molecular ; DNA/genetics ; Gene Expression ; Insect Hormones/*genetics ; Molecular Sequence Data ; Neurosecretory Systems/physiology ; Nucleic Acid Hybridization ; Protein Precursors/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
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    Endothelin: a novel peptide in the posterior pituitary system (1990)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1990-01-26
    Description: Endothelin (ET), originally characterized as a 21-residue vasoconstrictor peptide from endothelial cells, is present in the porcine spinal cord and may act as a neuropeptide. Endothelin-like immunoreactivity has now been demonstrated by immunohistochemistry in the paraventricular and supraoptic nuclear neurons and their terminals in the posterior pituitary of the pig and the rat. The presence of ET in the porcine hypothalamus was confirmed by reversed-phase high-pressure liquid chromatography and radioimmunoassay. Moreover, in situ hybridization demonstrated ET messenger RNA in porcine paraventricular nuclear neurons. Endothelin-like immunoreactive products in the posterior pituitary of the rat were depleted by water deprivation, suggesting a release of ET under physiological conditions. These findings indicate that ET is synthesized in the posterior pituitary system and may be involved in neurosecretory functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yoshizawa, T -- Shinmi, O -- Giaid, A -- Yanagisawa, M -- Gibson, S J -- Kimura, S -- Uchiyama, Y -- Polak, J M -- Masaki, T -- Kanazawa, I -- New York, N.Y. -- Science. 1990 Jan 26;247(4941):462-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of Tsukuba, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2405487" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromatography, High Pressure Liquid ; Endothelins ; Endothelium, Vascular ; Immunohistochemistry ; Male ; Neurons/analysis ; Nucleic Acid Hybridization ; Paraventricular Hypothalamic Nucleus/analysis ; Peptides/*analysis/genetics/metabolism ; Pituitary Gland/*analysis/metabolism ; RNA Probes ; RNA, Messenger/analysis ; Radioimmunoassay ; Rats ; Rats, Inbred Strains ; Supraoptic Nucleus/analysis ; Swine ; Tissue Distribution ; Water Deprivation
    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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  • 17
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    Nebulin and N-WASP cooperate to cause IGF-1-induced sarcomeric actin filament formation (2010)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2010-12-15
    Description: Insulin-like growth factor 1 (IGF-1) induces skeletal muscle maturation and enlargement (hypertrophy). These responses require protein synthesis and myofibril formation (myofibrillogenesis). However, the signaling mechanisms of myofibrillogenesis remain obscure. We found that IGF-1-induced phosphatidylinositol 3-kinase-Akt signaling formed a complex of nebulin and N-WASP at the Z bands of myofibrils by interfering with glycogen synthase kinase-3beta in mice. Although N-WASP is known to be an activator of the Arp2/3 complex to form branched actin filaments, the nebulin-N-WASP complex caused actin nucleation for unbranched actin filament formation from the Z bands without the Arp2/3 complex. Furthermore, N-WASP was required for IGF-1-induced muscle hypertrophy. These findings present the mechanisms of IGF-1-induced actin filament formation in myofibrillogenesis required for muscle maturation and hypertrophy and a mechanism of actin nucleation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takano, Kazunori -- Watanabe-Takano, Haruko -- Suetsugu, Shiro -- Kurita, Souichi -- Tsujita, Kazuya -- Kimura, Sumiko -- Karatsu, Takashi -- Takenawa, Tadaomi -- Endo, Takeshi -- New York, N.Y. -- Science. 2010 Dec 10;330(6010):1536-40. doi: 10.1126/science.1197767.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Graduate School of Science, Chiba University, 1-33 Yayoicho, Inageku, Chiba 263-8522, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21148390" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/*metabolism ; Actins/*metabolism ; Animals ; COS Cells ; Cercopithecus aethiops ; Hypertrophy ; Insulin-Like Growth Factor I/*metabolism ; Mice ; Mice, Inbred ICR ; *Muscle Development ; Muscle Proteins/chemistry/*metabolism ; Muscle, Skeletal/metabolism/pathology ; Myofibrils/metabolism ; Phosphatidylinositol 3-Kinase/metabolism ; Protein Binding ; Protein Interaction Domains and Motifs ; Proto-Oncogene Proteins c-akt/metabolism ; RNA Interference ; Sarcomeres/*metabolism ; Signal Transduction ; Wiskott-Aldrich Syndrome Protein, Neuronal/chemistry/*metabolism ; src Homology Domains
    Print ISSN: 0036-8075
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  • 18
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    Survivin reads phosphorylated histone H3 threonine 3 to activate the mitotic kinase Aurora B (2010)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2010-08-14
    Description: A hallmark of mitosis is the appearance of high levels of histone phosphorylation, yet the roles of these modifications remain largely unknown. Here, we demonstrate that histone H3 phosphorylated at threonine 3 is directly recognized by an evolutionarily conserved binding pocket in the BIR domain of Survivin, which is a member of the chromosomal passenger complex (CPC). This binding mediates recruitment of the CPC to chromosomes and the resulting activation of its kinase subunit Aurora B. Consistently, modulation of the kinase activity of Haspin, which phosphorylates H3T3, leads to defects in the Aurora B-dependent processes of spindle assembly and inhibition of nuclear reformation. These findings establish a direct cellular role for mitotic histone H3T3 phosphorylation, which is read and translated by the CPC to ensure accurate cell division.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3177562/" 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/PMC3177562/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kelly, Alexander E -- Ghenoiu, Cristina -- Xue, John Z -- Zierhut, Christian -- Kimura, Hiroshi -- Funabiki, Hironori -- GM075249/GM/NIGMS NIH HHS/ -- R01 GM075249/GM/NIGMS NIH HHS/ -- R01 GM075249-01/GM/NIGMS NIH HHS/ -- R01 GM075249-02/GM/NIGMS NIH HHS/ -- R01 GM075249-03/GM/NIGMS NIH HHS/ -- R01 GM075249-04/GM/NIGMS NIH HHS/ -- R01 GM075249-05/GM/NIGMS NIH HHS/ -- R01 GM075249-05S1/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Oct 8;330(6001):235-9. doi: 10.1126/science.1189505. Epub 2010 Aug 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Chromosome and Cell Biology, The Rockefeller University, New York, NY 10065, USA. akelly@rockefeller.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20705815" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aurora Kinases ; Cell Division ; Centromere/metabolism ; Chromatin/metabolism ; Chromosomal Proteins, Non-Histone/metabolism ; Chromosomes/*metabolism ; Enzyme Activation ; Histones/*metabolism ; *Mitosis ; Molecular Sequence Data ; Phosphorylation ; Protein Binding ; Protein Interaction Domains and Motifs ; Protein-Serine-Threonine Kinases/*metabolism ; Spindle Apparatus/metabolism ; Threonine/metabolism ; Xenopus Proteins/chemistry/*metabolism ; Xenopus laevis
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  • 19
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    Positive feedback within a kinase signaling complex functions as a switch mechanism for NF-kappaB activation (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-05-17
    Description: A switchlike response in nuclear factor-kappaB (NF-kappaB) activity implies the existence of a threshold in the NF-kappaB signaling module. We show that the CARD-containing MAGUK protein 1 (CARMA1, also called CARD11)-TAK1 (MAP3K7)-inhibitor of NF-kappaB (IkappaB) kinase-beta (IKKbeta) module is a switch mechanism for NF-kappaB activation in B cell receptor (BCR) signaling. Experimental and mathematical modeling analyses showed that IKK activity is regulated by positive feedback from IKKbeta to TAK1, generating a steep dose response to BCR stimulation. Mutation of the scaffolding protein CARMA1 at serine-578, an IKKbeta target, abrogated not only late TAK1 activity, but also the switchlike activation of NF-kappaB in single cells, suggesting that phosphorylation of this residue accounts for the feedback.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shinohara, Hisaaki -- Behar, Marcelo -- Inoue, Kentaro -- Hiroshima, Michio -- Yasuda, Tomoharu -- Nagashima, Takeshi -- Kimura, Shuhei -- Sanjo, Hideki -- Maeda, Shiori -- Yumoto, Noriko -- Ki, Sewon -- Akira, Shizuo -- Sako, Yasushi -- Hoffmann, Alexander -- Kurosaki, Tomohiro -- Okada-Hatakeyama, Mariko -- 5R01CA141722/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2014 May 16;344(6185):760-4. doi: 10.1126/science.1250020.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan. ; Signaling Systems Laboratory, Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA. Institute for Quantitative and Computational Biosciences (QC Bio) and Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90025, USA. ; Laboratory for Cell Signaling Dynamics, RIKEN Quantitative Biology Center (QBiC), 6-2-3, Furuedai, Suita, Osaka 565-0874, Japan. Cellular Informatics Laboratory, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan. ; Laboratory for Lymphocyte Differentiation, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan. ; Graduate School of Engineering, Tottori University 4-101, Koyama-minami, Tottori 680-8552, Japan. ; Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan. ; Cellular Informatics Laboratory, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan. ; Signaling Systems Laboratory, Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA. Institute for Quantitative and Computational Biosciences (QC Bio) and Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90025, USA. ahoffmann@ucla.edu kurosaki@rcai.riken.jp marikoh@rcai.riken.jp. ; Laboratory for Lymphocyte Differentiation, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan. Laboratory for Lymphocyte Differentiation, WPI Immunology Frontier Research Center, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan. ahoffmann@ucla.edu kurosaki@rcai.riken.jp marikoh@rcai.riken.jp. ; Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan. ahoffmann@ucla.edu kurosaki@rcai.riken.jp marikoh@rcai.riken.jp.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24833394" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/metabolism ; CARD Signaling Adaptor Proteins/genetics/*metabolism ; Cell Line ; Chickens ; Feedback, Physiological ; Guanylate Cyclase/genetics/*metabolism ; I-kappa B Kinase/*metabolism ; MAP Kinase Kinase Kinases/genetics/*metabolism ; Mice ; Mice, Knockout ; Mutation ; NF-kappa B/*agonists ; Phosphorylation ; Receptors, Antigen, B-Cell/genetics/*metabolism ; Serine/genetics/metabolism ; Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    Representation of action-specific reward values in the striatum (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-11-29
    Description: The estimation of the reward an action will yield is critical in decision-making. To elucidate the role of the basal ganglia in this process, we recorded striatal neurons of monkeys who chose between left and right handle turns, based on the estimated reward probabilities of the actions. During a delay period before the choices, the activity of more than one-third of striatal projection neurons was selective to the values of one of the two actions. Fewer neurons were tuned to relative values or action choice. These results suggest representation of action values in the striatum, which can guide action selection in the basal ganglia circuit.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Samejima, Kazuyuki -- Ueda, Yasumasa -- Doya, Kenji -- Kimura, Minoru -- New York, N.Y. -- Science. 2005 Nov 25;310(5752):1337-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Computational Neurobiology, ATR Computational Neuroscience Laboratories, 619-0288 Kyoto, Japan. samejima@lab.tamagawa.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16311337" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Brain Mapping ; Caudate Nucleus/*physiology ; *Choice Behavior ; Corpus Striatum/*physiology ; Female ; Macaca ; Male ; Neurons/*physiology ; Probability ; Putamen/*physiology ; Regression Analysis ; Reinforcement (Psychology) ; *Reward
    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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