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  • 2010-2014  (25)
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  • 1
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    Mutations in the profilin 1 gene cause familial amyotrophic lateral sclerosis (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-07-18
    Description: Amyotrophic lateral sclerosis (ALS) is a late-onset neurodegenerative disorder resulting from motor neuron death. Approximately 10% of cases are familial (FALS), typically with a dominant inheritance mode. Despite numerous advances in recent years, nearly 50% of FALS cases have unknown genetic aetiology. Here we show that mutations within the profilin 1 (PFN1) gene can cause FALS. PFN1 is crucial for the conversion of monomeric (G)-actin to filamentous (F)-actin. Exome sequencing of two large ALS families showed different mutations within the PFN1 gene. Further sequence analysis identified 4 mutations in 7 out of 274 FALS cases. Cells expressing PFN1 mutants contain ubiquitinated, insoluble aggregates that in many cases contain the ALS-associated protein TDP-43. PFN1 mutants also display decreased bound actin levels and can inhibit axon outgrowth. Furthermore, primary motor neurons expressing mutant PFN1 display smaller growth cones with a reduced F/G-actin ratio. These observations further document that cytoskeletal pathway alterations contribute to ALS pathogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3575525/" 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/PMC3575525/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wu, Chi-Hong -- Fallini, Claudia -- Ticozzi, Nicola -- Keagle, Pamela J -- Sapp, Peter C -- Piotrowska, Katarzyna -- Lowe, Patrick -- Koppers, Max -- McKenna-Yasek, Diane -- Baron, Desiree M -- Kost, Jason E -- Gonzalez-Perez, Paloma -- Fox, Andrew D -- Adams, Jenni -- Taroni, Franco -- Tiloca, Cinzia -- Leclerc, Ashley Lyn -- Chafe, Shawn C -- Mangroo, Dev -- Moore, Melissa J -- Zitzewitz, Jill A -- Xu, Zuo-Shang -- van den Berg, Leonard H -- Glass, Jonathan D -- Siciliano, Gabriele -- Cirulli, Elizabeth T -- Goldstein, David B -- Salachas, Francois -- Meininger, Vincent -- Rossoll, Wilfried -- Ratti, Antonia -- Gellera, Cinzia -- Bosco, Daryl A -- Bassell, Gary J -- Silani, Vincenzo -- Drory, Vivian E -- Brown, Robert H Jr -- Landers, John E -- 1R01NS050557/NS/NINDS NIH HHS/ -- 1R01NS065847/NS/NINDS NIH HHS/ -- R01 NS050557/NS/NINDS NIH HHS/ -- RC2 NS070342/NS/NINDS NIH HHS/ -- RC2-NS070-342/NS/NINDS NIH HHS/ -- T32 GM007754/GM/NIGMS NIH HHS/ -- U01 NS052225/NS/NINDS NIH HHS/ -- UL1 TR000454/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Aug 23;488(7412):499-503. doi: 10.1038/nature11280.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22801503" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Amino Acid Sequence ; Amyotrophic Lateral Sclerosis/diagnosis/*genetics/metabolism/*pathology ; Animals ; Axons/metabolism/pathology ; Cells, Cultured ; European Continental Ancestry Group/genetics ; Exome/genetics ; Female ; Genetic Predisposition to Disease/*genetics ; Growth Cones/metabolism ; High-Throughput Nucleotide Sequencing ; Humans ; Jews/genetics ; Male ; Mice ; Models, Molecular ; Molecular Sequence Data ; Motor Neurons/cytology/metabolism ; Mutant Proteins/genetics/*metabolism ; Mutation/*genetics ; Pedigree ; Profilins/*genetics/*metabolism ; Protein Conformation ; Ubiquitination
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
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    A selective jumonji H3K27 demethylase inhibitor modulates the proinflammatory macrophage response (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-07-31
    Description: The jumonji (JMJ) family of histone demethylases are Fe2+- and alpha-ketoglutarate-dependent oxygenases that are essential components of regulatory transcriptional chromatin complexes. These enzymes demethylate lysine residues in histones in a methylation-state and sequence-specific context. Considerable effort has been devoted to gaining a mechanistic understanding of the roles of histone lysine demethylases in eukaryotic transcription, genome integrity and epigenetic inheritance, as well as in development, physiology and disease. However, because of the absence of any selective inhibitors, the relevance of the demethylase activity of JMJ enzymes in regulating cellular responses remains poorly understood. Here we present a structure-guided small-molecule and chemoproteomics approach to elucidating the functional role of the H3K27me3-specific demethylase subfamily (KDM6 subfamily members JMJD3 and UTX). The liganded structures of human and mouse JMJD3 provide novel insight into the specificity determinants for cofactor, substrate and inhibitor recognition by the KDM6 subfamily of demethylases. We exploited these structural features to generate the first small-molecule catalytic site inhibitor that is selective for the H3K27me3-specific JMJ subfamily. We demonstrate that this inhibitor binds in a novel manner and reduces lipopolysaccharide-induced proinflammatory cytokine production by human primary macrophages, a process that depends on both JMJD3 and UTX. Our results resolve the ambiguity associated with the catalytic function of H3K27-specific JMJs in regulating disease-relevant inflammatory responses and provide encouragement for designing small-molecule inhibitors to allow selective pharmacological intervention across the JMJ family.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4691848/" 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/PMC4691848/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kruidenier, Laurens -- Chung, Chun-wa -- Cheng, Zhongjun -- Liddle, John -- Che, KaHing -- Joberty, Gerard -- Bantscheff, Marcus -- Bountra, Chas -- Bridges, Angela -- Diallo, Hawa -- Eberhard, Dirk -- Hutchinson, Sue -- Jones, Emma -- Katso, Roy -- Leveridge, Melanie -- Mander, Palwinder K -- Mosley, Julie -- Ramirez-Molina, Cesar -- Rowland, Paul -- Schofield, Christopher J -- Sheppard, Robert J -- Smith, Julia E -- Swales, Catherine -- Tanner, Robert -- Thomas, Pamela -- Tumber, Anthony -- Drewes, Gerard -- Oppermann, Udo -- Patel, Dinshaw J -- Lee, Kevin -- Wilson, David M -- 092809/Wellcome Trust/United Kingdom -- 18358/Arthritis Research UK/United Kingdom -- P30 CA008748/CA/NCI NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Wellcome Trust/United Kingdom -- England -- Nature. 2012 Aug 16;488(7411):404-8. doi: 10.1038/nature11262.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Epinova DPU, Immuno-Inflammation Therapy Area, GlaxoSmithKline R&D, Medicines Research Centre, Stevenage SG1 2NY, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22842901" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biocatalysis/drug effects ; Catalytic Domain ; Cells, Cultured ; Enzyme Inhibitors/metabolism/*pharmacology ; Evolution, Molecular ; Histones/chemistry/metabolism ; Humans ; Inhibitory Concentration 50 ; Jumonji Domain-Containing Histone Demethylases/*antagonists & ; inhibitors/chemistry/classification/metabolism ; Lysine/metabolism ; Macrophages/*drug effects/enzymology/*immunology/metabolism ; Methylation/drug effects ; Mice ; Models, Molecular ; Substrate Specificity ; Tumor Necrosis Factor-alpha/biosynthesis
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
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    Inhibitory receptors bind ANGPTLs and support blood stem cells and leukaemia development (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-06-05
    Description: How environmental cues regulate adult stem cell and cancer cell activity through surface receptors is poorly understood. Angiopoietin-like proteins (ANGPTLs), a family of seven secreted glycoproteins, are known to support the activity of haematopoietic stem cells (HSCs) in vitro and in vivo. ANGPTLs also have important roles in lipid metabolism, angiogenesis and inflammation, but were considered 'orphan ligands' because no receptors were identified. Here we show that the immune-inhibitory receptor human leukocyte immunoglobulin-like receptor B2 (LILRB2) and its mouse orthologue paired immunoglobulin-like receptor (PIRB) are receptors for several ANGPTLs. LILRB2 and PIRB are expressed on human and mouse HSCs, respectively, and the binding of ANGPTLs to these receptors supported ex vivo expansion of HSCs. In mouse transplantation acute myeloid leukaemia models, a deficiency in intracellular signalling of PIRB resulted in increased differentiation of leukaemia cells, revealing that PIRB supports leukaemia development. Our study indicates an unexpected functional significance of classical immune-inhibitory receptors in maintenance of stemness of normal adult stem cells and in support of cancer development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3367397/" 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/PMC3367397/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zheng, Junke -- Umikawa, Masato -- Cui, Changhao -- Li, Jiyuan -- Chen, Xiaoli -- Zhang, Chaozheng -- Huynh, HoangDinh -- Kang, Xunlei -- Silvany, Robert -- Wan, Xuan -- Ye, Jingxiao -- Canto, Alberto Puig -- Chen, Shu-Hsia -- Wang, Huan-You -- Ward, E Sally -- Zhang, Cheng Cheng -- K01 CA 120099/CA/NCI NIH HHS/ -- K01 CA120099/CA/NCI NIH HHS/ -- K01 CA120099-03/CA/NCI NIH HHS/ -- K01 CA120099-04/CA/NCI NIH HHS/ -- K01 CA120099-05/CA/NCI NIH HHS/ -- K01 CA120099-06/CA/NCI NIH HHS/ -- R01 CA109322/CA/NCI NIH HHS/ -- R01 CA172268/CA/NCI NIH HHS/ -- England -- Nature. 2012 May 30;485(7400):656-60. doi: 10.1038/nature11095.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Physiology and Developmental Biology, 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/22660330" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; Cell Division ; Cells, Cultured ; Disease Models, Animal ; Fetal Blood/cytology/metabolism ; HEK293 Cells ; Hematopoietic Stem Cells/*cytology/*metabolism ; Humans ; Leukemia/*metabolism/*pathology ; Membrane Glycoproteins/genetics/*metabolism ; Mice ; Myeloid-Lymphoid Leukemia Protein ; Receptors, Immunologic/genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
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    Probing sporadic and familial Alzheimer's disease using induced pluripotent stem cells (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-01-27
    Description: Our understanding of Alzheimer's disease pathogenesis is currently limited by difficulties in obtaining live neurons from patients and the inability to model the sporadic form of the disease. It may be possible to overcome these challenges by reprogramming primary cells from patients into induced pluripotent stem cells (iPSCs). Here we reprogrammed primary fibroblasts from two patients with familial Alzheimer's disease, both caused by a duplication of the amyloid-beta precursor protein gene (APP; termed APP(Dp)), two with sporadic Alzheimer's disease (termed sAD1, sAD2) and two non-demented control individuals into iPSC lines. Neurons from differentiated cultures were purified with fluorescence-activated cell sorting and characterized. Purified cultures contained more than 90% neurons, clustered with fetal brain messenger RNA samples by microarray criteria, and could form functional synaptic contacts. Virtually all cells exhibited normal electrophysiological activity. Relative to controls, iPSC-derived, purified neurons from the two APP(Dp) patients and patient sAD2 exhibited significantly higher levels of the pathological markers amyloid-beta(1-40), phospho-tau(Thr 231) and active glycogen synthase kinase-3beta (aGSK-3beta). Neurons from APP(Dp) and sAD2 patients also accumulated large RAB5-positive early endosomes compared to controls. Treatment of purified neurons with beta-secretase inhibitors, but not gamma-secretase inhibitors, caused significant reductions in phospho-Tau(Thr 231) and aGSK-3beta levels. These results suggest a direct relationship between APP proteolytic processing, but not amyloid-beta, in GSK-3beta activation and tau phosphorylation in human neurons. Additionally, we observed that neurons with the genome of one sAD patient exhibited the phenotypes seen in familial Alzheimer's disease samples. More generally, we demonstrate that iPSC technology can be used to observe phenotypes relevant to Alzheimer's disease, even though it can take decades for overt disease to manifest in patients.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3338985/" 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/PMC3338985/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Israel, Mason A -- Yuan, Shauna H -- Bardy, Cedric -- Reyna, Sol M -- Mu, Yangling -- Herrera, Cheryl -- Hefferan, Michael P -- Van Gorp, Sebastiaan -- Nazor, Kristopher L -- Boscolo, Francesca S -- Carson, Christian T -- Laurent, Louise C -- Marsala, Martin -- Gage, Fred H -- Remes, Anne M -- Koo, Edward H -- Goldstein, Lawrence S B -- K12 HD001259/HD/NICHD NIH HHS/ -- P30 NS047101/NS/NINDS NIH HHS/ -- P50 AG005131/AG/NIA NIH HHS/ -- RC1 NS068705/NS/NINDS NIH HHS/ -- RC1 NS068705-01/NS/NINDS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Jan 25;482(7384):216-20. doi: 10.1038/nature10821.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22278060" target="_blank"〉PubMed〈/a〉
    Keywords: Aged, 80 and over ; Alzheimer Disease/*metabolism/*pathology ; Amyloid Precursor Protein Secretases/antagonists & inhibitors/metabolism ; Amyloid beta-Peptides/metabolism/secretion ; Amyloid beta-Protein Precursor/genetics/metabolism/secretion ; Astrocytes/cytology ; Biomarkers/metabolism ; Cells, Cultured ; Cellular Reprogramming ; Coculture Techniques ; Endosomes/metabolism ; Enzyme Activation ; Female ; Fibroblasts/cytology/metabolism ; Glycogen Synthase Kinase 3/metabolism ; Humans ; Induced Pluripotent Stem Cells/*metabolism/*pathology ; Male ; Middle Aged ; Models, Biological ; Neurons/drug effects/*metabolism/pathology ; Peptide Fragments/metabolism/secretion ; Phosphoproteins/metabolism ; Phosphorylation/drug effects ; Protease Inhibitors/pharmacology ; Proteolysis ; Synapsins/metabolism ; tau 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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  • 5
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    Crystal structure of the heterodimeric CLOCK:BMAL1 transcriptional activator complex (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-06-02
    Description: The circadian clock in mammals is driven by an autoregulatory transcriptional feedback mechanism that takes approximately 24 hours to complete. A key component of this mechanism is a heterodimeric transcriptional activator consisting of two basic helix-loop-helix PER-ARNT-SIM (bHLH-PAS) domain protein subunits, CLOCK and BMAL1. Here, we report the crystal structure of a complex containing the mouse CLOCK:BMAL1 bHLH-PAS domains at 2.3 A resolution. The structure reveals an unusual asymmetric heterodimer with the three domains in each of the two subunits--bHLH, PAS-A, and PAS-B--tightly intertwined and involved in dimerization interactions, resulting in three distinct protein interfaces. Mutations that perturb the observed heterodimer interfaces affect the stability and activity of the CLOCK:BMAL1 complex as well as the periodicity of the circadian oscillator. The structure of the CLOCK:BMAL1 complex is a starting point for understanding at an atomic level the mechanism driving the mammalian circadian clock.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3694778/" 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/PMC3694778/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, Nian -- Chelliah, Yogarany -- Shan, Yongli -- Taylor, Clinton A -- Yoo, Seung-Hee -- Partch, Carrie -- Green, Carla B -- Zhang, Hong -- Takahashi, Joseph S -- R01 GM081875/GM/NIGMS NIH HHS/ -- R01 GM090247/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Jul 13;337(6091):189-94. doi: 10.1126/science.1222804. Epub 2012 May 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22653727" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors/*chemistry/genetics/metabolism ; Amino Acid Sequence ; Animals ; CLOCK Proteins/*chemistry/genetics/metabolism ; Cells, Cultured ; *Circadian Rhythm ; Crystallography, X-Ray ; DNA/metabolism ; HEK293 Cells ; Helix-Loop-Helix Motifs ; Humans ; Mice ; Models, Molecular ; Molecular Sequence Data ; Mutant Proteins/chemistry/metabolism ; Protein Binding ; Protein Interaction Domains and Motifs ; Protein Multimerization ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/chemistry/metabolism ; Static Electricity ; *Transcriptional Activation
    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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    Control of somatic tissue differentiation by the long non-coding RNA TINCR (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-12-04
    Description: Several of the thousands of human long non-coding RNAs (lncRNAs) have been functionally characterized; however, potential roles for lncRNAs in somatic tissue differentiation remain poorly understood. Here we show that a 3.7-kilobase lncRNA, terminal differentiation-induced ncRNA (TINCR), controls human epidermal differentiation by a post-transcriptional mechanism. TINCR is required for high messenger RNA abundance of key differentiation genes, many of which are mutated in human skin diseases, including FLG, LOR, ALOXE3, ALOX12B, ABCA12, CASP14 and ELOVL3. TINCR-deficient epidermis lacked terminal differentiation ultrastructure, including keratohyalin granules and intact lamellar bodies. Genome-scale RNA interactome analysis revealed that TINCR interacts with a range of differentiation mRNAs. TINCR-mRNA interaction occurs through a 25-nucleotide 'TINCR box' motif that is strongly enriched in interacting mRNAs and required for TINCR binding. A high-throughput screen to analyse TINCR binding capacity to approximately 9,400 human recombinant proteins revealed direct binding of TINCR RNA to the staufen1 (STAU1) protein. STAU1-deficient tissue recapitulated the impaired differentiation seen with TINCR depletion. Loss of UPF1 and UPF2, both of which are required for STAU1-mediated RNA decay, however, did not have differentiation effects. Instead, the TINCR-STAU1 complex seems to mediate stabilization of differentiation mRNAs, such as KRT80. These data identify TINCR as a key lncRNA required for somatic tissue differentiation, which occurs through lncRNA binding to differentiation mRNAs to ensure their expression.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3674581/" 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/PMC3674581/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kretz, Markus -- Siprashvili, Zurab -- Chu, Ci -- Webster, Dan E -- Zehnder, Ashley -- Qu, Kun -- Lee, Carolyn S -- Flockhart, Ross J -- Groff, Abigail F -- Chow, Jennifer -- Johnston, Danielle -- Kim, Grace E -- Spitale, Robert C -- Flynn, Ryan A -- Zheng, Grace X Y -- Aiyer, Subhadra -- Raj, Arjun -- Rinn, John L -- Chang, Howard Y -- Khavari, Paul A -- AR49737/AR/NIAMS NIH HHS/ -- DP2 OD008514/OD/NIH HHS/ -- P30 CA124435/CA/NCI NIH HHS/ -- R01 AR049737/AR/NIAMS NIH HHS/ -- R01 HG004361/HG/NHGRI NIH HHS/ -- R01-HG004361/HG/NHGRI NIH HHS/ -- T32 AR007422/AR/NIAMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Jan 10;493(7431):231-5. doi: 10.1038/nature11661. Epub 2012 Dec 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Program in Epithelial Biology, Stanford University School of Medicine, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23201690" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Differentiation/*genetics ; Cells, Cultured ; Cytoskeletal Proteins/metabolism ; Epidermis/*cytology/*metabolism ; Gene Expression Regulation ; High-Throughput Screening Assays ; Humans ; Keratinocytes ; Mutation ; Nucleotide Motifs/genetics ; Protein Binding ; RNA Stability/genetics ; RNA, Long Noncoding/*genetics/*metabolism ; RNA, Messenger/genetics/metabolism ; RNA-Binding Proteins/metabolism ; Skin Diseases/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 7
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    DNA damage defines sites of recurrent chromosomal translocations in B lymphocytes (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-02-09
    Description: Recurrent chromosomal translocations underlie both haematopoietic and solid tumours. Their origin has been ascribed to selection of random rearrangements, targeted DNA damage, or frequent nuclear interactions between translocation partners; however, the relative contribution of each of these elements has not been measured directly or on a large scale. Here we examine the role of nuclear architecture and frequency of DNA damage in the genesis of chromosomal translocations by measuring these parameters simultaneously in cultured mouse B lymphocytes. In the absence of recurrent DNA damage, translocations between Igh or Myc and all other genes are directly related to their contact frequency. Conversely, translocations associated with recurrent site-directed DNA damage are proportional to the rate of DNA break formation, as measured by replication protein A accumulation at the site of damage. Thus, non-targeted rearrangements reflect nuclear organization whereas DNA break formation governs the location and frequency of recurrent translocations, including those driving B-cell malignancies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3459314/" 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/PMC3459314/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hakim, Ofir -- Resch, Wolfgang -- Yamane, Arito -- Klein, Isaac -- Kieffer-Kwon, Kyong-Rim -- Jankovic, Mila -- Oliveira, Thiago -- Bothmer, Anne -- Voss, Ty C -- Ansarah-Sobrinho, Camilo -- Mathe, Ewy -- Liang, Genqing -- Cobell, Jesse -- Nakahashi, Hirotaka -- Robbiani, Davide F -- Nussenzweig, Andre -- Hager, Gordon L -- Nussenzweig, Michel C -- Casellas, Rafael -- AI037526/AI/NIAID NIH HHS/ -- R01 AI037526/AI/NIAID NIH HHS/ -- Z01 AR041148-03/Intramural NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Feb 7;484(7392):69-74. doi: 10.1038/nature10909.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Receptor Biology and Gene Expression, NCI, National Institutes of Health, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22314321" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/cytology/*metabolism/*pathology ; Cell Nucleus/genetics/metabolism ; Cells, Cultured ; Chromosome Positioning ; Chromosomes, Mammalian/genetics/metabolism ; Cytidine Deaminase/deficiency/genetics/metabolism ; DNA Breaks, Double-Stranded ; DNA Damage/*genetics ; Genes, myc/genetics ; Genome/genetics ; Immunoglobulin Heavy Chains/genetics ; Mice ; Replication Protein A/metabolism ; Translocation, Genetic/*genetics
    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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  • 8
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    Exercise-induced BCL2-regulated autophagy is required for muscle glucose homeostasis (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-01-20
    Description: Exercise has beneficial effects on human health, including protection against metabolic disorders such as diabetes. However, the cellular mechanisms underlying these effects are incompletely understood. The lysosomal degradation pathway, autophagy, is an intracellular recycling system that functions during basal conditions in organelle and protein quality control. During stress, increased levels of autophagy permit cells to adapt to changing nutritional and energy demands through protein catabolism. Moreover, in animal models, autophagy protects against diseases such as cancer, neurodegenerative disorders, infections, inflammatory diseases, ageing and insulin resistance. Here we show that acute exercise induces autophagy in skeletal and cardiac muscle of fed mice. To investigate the role of exercise-mediated autophagy in vivo, we generated mutant mice that show normal levels of basal autophagy but are deficient in stimulus (exercise- or starvation)-induced autophagy. These mice (termed BCL2 AAA mice) contain knock-in mutations in BCL2 phosphorylation sites (Thr69Ala, Ser70Ala and Ser84Ala) that prevent stimulus-induced disruption of the BCL2-beclin-1 complex and autophagy activation. BCL2 AAA mice show decreased endurance and altered glucose metabolism during acute exercise, as well as impaired chronic exercise-mediated protection against high-fat-diet-induced glucose intolerance. Thus, exercise induces autophagy, BCL2 is a crucial regulator of exercise- (and starvation)-induced autophagy in vivo, and autophagy induction may contribute to the beneficial metabolic effects of exercise.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3518436/" 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/PMC3518436/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉He, Congcong -- Bassik, Michael C -- Moresi, Viviana -- Sun, Kai -- Wei, Yongjie -- Zou, Zhongju -- An, Zhenyi -- Loh, Joy -- Fisher, Jill -- Sun, Qihua -- Korsmeyer, Stanley -- Packer, Milton -- May, Herman I -- Hill, Joseph A -- Virgin, Herbert W -- Gilpin, Christopher -- Xiao, Guanghua -- Bassel-Duby, Rhonda -- Scherer, Philipp E -- Levine, Beth -- 1P01 DK0887761/DK/NIDDK NIH HHS/ -- P01 DK088761/DK/NIDDK NIH HHS/ -- P30 CA142543/CA/NCI NIH HHS/ -- R01 CA109618/CA/NCI NIH HHS/ -- R01 CA112023/CA/NCI NIH HHS/ -- R01 DK055758/DK/NIDDK NIH HHS/ -- R0I AI084887/AI/NIAID NIH HHS/ -- R0I HL080244/HL/NHLBI NIH HHS/ -- R0I HL090842/HL/NHLBI NIH HHS/ -- RC1 DK086629/DK/NIDDK NIH HHS/ -- RCI DK086629/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Jan 18;481(7382):511-5. doi: 10.1038/nature10758.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Autophagy Research, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22258505" target="_blank"〉PubMed〈/a〉
    Keywords: Adiponectin/blood ; Animals ; Apoptosis Regulatory Proteins/genetics/metabolism ; Autophagy/drug effects/genetics/*physiology ; Cells, Cultured ; Dietary Fats/adverse effects ; Food Deprivation/physiology ; Gene Knock-In Techniques ; Glucose/*metabolism ; Glucose Intolerance/chemically induced/prevention & control ; Glucose Tolerance Test ; *Homeostasis/drug effects ; Leptin/blood ; Male ; Mice ; Mice, Transgenic ; Muscle, Skeletal/cytology/drug effects/*metabolism ; Mutation ; Myocardium/cytology/*metabolism ; Phosphorylation/genetics ; Physical Conditioning, Animal/*physiology ; Physical Endurance/genetics/physiology ; Physical Exertion/genetics/physiology ; Protein Binding/genetics ; Proto-Oncogene Proteins/genetics/*metabolism ; Proto-Oncogene Proteins c-bcl-2 ; Running/physiology
    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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    IDH1 mutation is sufficient to establish the glioma hypermethylator phenotype (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-02-22
    Description: Both genome-wide genetic and epigenetic alterations are fundamentally important for the development of cancers, but the interdependence of these aberrations is poorly understood. Glioblastomas and other cancers with the CpG island methylator phenotype (CIMP) constitute a subset of tumours with extensive epigenomic aberrations and a distinct biology. Glioma CIMP (G-CIMP) is a powerful determinant of tumour pathogenicity, but the molecular basis of G-CIMP remains unresolved. Here we show that mutation of a single gene, isocitrate dehydrogenase 1 (IDH1), establishes G-CIMP by remodelling the methylome. This remodelling results in reorganization of the methylome and transcriptome. Examination of the epigenome of a large set of intermediate-grade gliomas demonstrates a distinct G-CIMP phenotype that is highly dependent on the presence of IDH mutation. Introduction of mutant IDH1 into primary human astrocytes alters specific histone marks, induces extensive DNA hypermethylation, and reshapes the methylome in a fashion that mirrors the changes observed in G-CIMP-positive lower-grade gliomas. Furthermore, the epigenomic alterations resulting from mutant IDH1 activate key gene expression programs, characterize G-CIMP-positive proneural glioblastomas but not other glioblastomas, and are predictive of improved survival. Our findings demonstrate that IDH mutation is the molecular basis of CIMP in gliomas, provide a framework for understanding oncogenesis in these gliomas, and highlight the interplay between genomic and epigenomic changes in human cancers.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3351699/" 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/PMC3351699/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Turcan, Sevin -- Rohle, Daniel -- Goenka, Anuj -- Walsh, Logan A -- Fang, Fang -- Yilmaz, Emrullah -- Campos, Carl -- Fabius, Armida W M -- Lu, Chao -- Ward, Patrick S -- Thompson, Craig B -- Kaufman, Andrew -- Guryanova, Olga -- Levine, Ross -- Heguy, Adriana -- Viale, Agnes -- Morris, Luc G T -- Huse, Jason T -- Mellinghoff, Ingo K -- Chan, Timothy A -- R01 CA154767/CA/NCI NIH HHS/ -- R01CA154767-01/CA/NCI NIH HHS/ -- U54 CA143798/CA/NCI NIH HHS/ -- U54-CA143798/CA/NCI NIH HHS/ -- England -- Nature. 2012 Feb 15;483(7390):479-83. doi: 10.1038/nature10866.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22343889" target="_blank"〉PubMed〈/a〉
    Keywords: Astrocytes/cytology/metabolism ; Cell Survival/genetics ; Cells, Cultured ; CpG Islands/genetics ; DNA Methylation/*genetics ; Epigenesis, Genetic ; Epigenomics ; Gene Expression Regulation ; Glioblastoma/genetics/pathology ; Glioma/*genetics/pathology ; HEK293 Cells ; Histones/metabolism ; Humans ; Isocitrate Dehydrogenase/*genetics/metabolism ; Metabolome/genetics ; Mutation/*genetics ; *Phenotype ; Tumor Cells, Cultured
    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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  • 10
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    A periciliary brush promotes the lung health by separating the mucus layer from airway epithelia (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-08-28
    Description: Mucus clearance is the primary defense mechanism that protects airways from inhaled infectious and toxic agents. In the current gel-on-liquid mucus clearance model, a mucus gel is propelled on top of a "watery" periciliary layer surrounding the cilia. However, this model fails to explain the formation of a distinct mucus layer in health or why mucus clearance fails in disease. We propose a gel-on-brush model in which the periciliary layer is occupied by membrane-spanning mucins and mucopolysaccharides densely tethered to the airway surface. This brush prevents mucus penetration into the periciliary space and causes mucus to form a distinct layer. The relative osmotic moduli of the mucus and periciliary brush layers explain both the stability of mucus clearance in health and its failure in airway disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3633213/" 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/PMC3633213/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Button, Brian -- Cai, Li-Heng -- Ehre, Camille -- Kesimer, Mehmet -- Hill, David B -- Sheehan, John K -- Boucher, Richard C -- Rubinstein, Michael -- HHSN268200900020/PHS HHS/ -- K01DK080847/DK/NIDDK NIH HHS/ -- P01HL108808/HL/NHLBI NIH HHS/ -- P01HL110873-01/HL/NHLBI NIH HHS/ -- P01HL34322/HL/NHLBI NIH HHS/ -- P30DK065988/DK/NIDDK NIH HHS/ -- P50HL107168/HL/NHLBI NIH HHS/ -- P50HL107168-01/HL/NHLBI NIH HHS/ -- R01 HL103940/HL/NHLBI NIH HHS/ -- R01HL077546/HL/NHLBI NIH HHS/ -- R01HL103940/HL/NHLBI NIH HHS/ -- UL1-RR025747/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2012 Aug 24;337(6097):937-41. doi: 10.1126/science.1223012.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cystic Fibrosis Research and Treatment Center, University of North Carolina, Chapel Hill, NC 27599-7248, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22923574" target="_blank"〉PubMed〈/a〉
    Keywords: Cells, Cultured ; Cilia/*physiology/ultrastructure ; Gels ; Glycosaminoglycans/*physiology ; Humans ; Lung/*physiology ; Lung Diseases/physiopathology ; *Models, Biological ; Mucins/*physiology ; *Mucociliary Clearance ; Mucus/*physiology ; Osmotic Pressure ; Respiratory Mucosa/*physiology/ultrastructure
    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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