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  • *Gene Expression Regulation  (13)
  • American Association for the Advancement of Science (AAAS)  (13)
  • American Meteorological Society
  • Oxford University Press
  • 2015-2019
  • 2010-2014  (13)
  • 1955-1959
  • 2013  (13)
  • 1958
  • 1955
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (13)
  • American Meteorological Society
  • Oxford University Press
  • Nature Publishing Group (NPG)  (6)
Years
  • 2015-2019
  • 2010-2014  (13)
  • 1955-1959
Year
  • 1
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    Influence of HLA-C expression level on HIV control (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-04-06
    Description: A variant upstream of human leukocyte antigen C (HLA-C) shows the most significant genome-wide effect on HIV control in European Americans and is also associated with the level of HLA-C expression. We characterized the differential cell surface expression levels of all common HLA-C allotypes and tested directly for effects of HLA-C expression on outcomes of HIV infection in 5243 individuals. Increasing HLA-C expression was associated with protection against multiple outcomes independently of individual HLA allelic effects in both African and European Americans, regardless of their distinct HLA-C frequencies and linkage relationships with HLA-B and HLA-A. Higher HLA-C expression was correlated with increased likelihood of cytotoxic T lymphocyte responses and frequency of viral escape mutation. In contrast, high HLA-C expression had a deleterious effect in Crohn's disease, suggesting a broader influence of HLA expression levels in human disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3784322/" 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/PMC3784322/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Apps, Richard -- Qi, Ying -- Carlson, Jonathan M -- Chen, Haoyan -- Gao, Xiaojiang -- Thomas, Rasmi -- Yuki, Yuko -- Del Prete, Greg Q -- Goulder, Philip -- Brumme, Zabrina L -- Brumme, Chanson J -- John, Mina -- Mallal, Simon -- Nelson, George -- Bosch, Ronald -- Heckerman, David -- Stein, Judy L -- Soderberg, Kelly A -- Moody, M Anthony -- Denny, Thomas N -- Zeng, Xue -- Fang, Jingyuan -- Moffett, Ashley -- Lifson, Jeffrey D -- Goedert, James J -- Buchbinder, Susan -- Kirk, Gregory D -- Fellay, Jacques -- McLaren, Paul -- Deeks, Steven G -- Pereyra, Florencia -- Walker, Bruce -- Michael, Nelson L -- Weintrob, Amy -- Wolinsky, Steven -- Liao, Wilson -- Carrington, Mary -- 5-M01-RR-00722/RR/NCRR NIH HHS/ -- HHSN261200800001E/CA/NCI NIH HHS/ -- HHSN261200800001E/PHS HHS/ -- K08 AR057763/AR/NIAMS NIH HHS/ -- K08AR057763/AR/NIAMS NIH HHS/ -- K24 AI069994/AI/NIAID NIH HHS/ -- K24AI069994/AI/NIAID NIH HHS/ -- N02-CP-55504/CP/NCI NIH HHS/ -- P30 AI027763/AI/NIAID NIH HHS/ -- P30 AI027767/AI/NIAID NIH HHS/ -- P30 AI027767-24/AI/NIAID NIH HHS/ -- P30 MH62246/MH/NIMH NIH HHS/ -- PG/09/077/27964/British Heart Foundation/United Kingdom -- R01 AI046995/AI/NIAID NIH HHS/ -- R01 AI060460/AI/NIAID NIH HHS/ -- R01 AI087145/AI/NIAID NIH HHS/ -- R01 AR065174/AR/NIAMS NIH HHS/ -- R01-AI046995/AI/NIAID NIH HHS/ -- R01-AI060460/AI/NIAID NIH HHS/ -- R01-DA-04334/DA/NIDA NIH HHS/ -- R01-DA-12568/DA/NIDA NIH HHS/ -- R01-DA04334/DA/NIDA NIH HHS/ -- R01-DA12568/DA/NIDA NIH HHS/ -- R24 AI067039/AI/NIAID NIH HHS/ -- U01-AI-067854/AI/NIAID NIH HHS/ -- U01-AI-35039/AI/NIAID NIH HHS/ -- U01-AI-35040/AI/NIAID NIH HHS/ -- U01-AI-35041/AI/NIAID NIH HHS/ -- U01-AI-35042/AI/NIAID NIH HHS/ -- U01-AI-35043/AI/NIAID NIH HHS/ -- U01-AI-37613/AI/NIAID NIH HHS/ -- U01-AI-37984/AI/NIAID NIH HHS/ -- UL1 RR024131/RR/NCRR NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2013 Apr 5;340(6128):87-91. doi: 10.1126/science.1232685.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer and Inflammation Program, Laboratory of Experimental Immunology, Science Applications International Corporation-Frederick, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23559252" target="_blank"〉PubMed〈/a〉
    Keywords: African Americans/genetics ; Alleles ; Amino Acid Sequence ; Anti-Retroviral Agents/therapeutic use ; Crohn Disease/genetics/immunology ; *Gene Expression Regulation ; HIV/genetics/*immunology ; HIV Infections/drug therapy/*genetics/*immunology ; HLA-C Antigens/*genetics ; Humans ; Immunodominant Epitopes/genetics ; Molecular Sequence Data ; Mutation ; Peptide Fragments/immunology ; Polymorphism, Single Nucleotide ; T-Lymphocytes, Cytotoxic/*immunology ; Viral Load/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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  • 2
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    A long noncoding RNA mediates both activation and repression of immune response genes (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-08-03
    Description: An inducible program of inflammatory gene expression is central to antimicrobial defenses. This response is controlled by a collaboration involving signal-dependent activation of transcription factors, transcriptional co-regulators, and chromatin-modifying factors. We have identified a long noncoding RNA (lncRNA) that acts as a key regulator of this inflammatory response. Pattern recognition receptors such as the Toll-like receptors induce the expression of numerous lncRNAs. One of these, lincRNA-Cox2, mediates both the activation and repression of distinct classes of immune genes. Transcriptional repression of target genes is dependent on interactions of lincRNA-Cox2 with heterogeneous nuclear ribonucleoprotein A/B and A2/B1. Collectively, these studies unveil a central role of lincRNA-Cox2 as a broad-acting regulatory component of the circuit that controls the inflammatory response.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376668/" 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/PMC4376668/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carpenter, Susan -- Aiello, Daniel -- Atianand, Maninjay K -- Ricci, Emiliano P -- Gandhi, Pallavi -- Hall, Lisa L -- Byron, Meg -- Monks, Brian -- Henry-Bezy, Meabh -- Lawrence, Jeanne B -- O'Neill, Luke A J -- Moore, Melissa J -- Caffrey, Daniel R -- Fitzgerald, Katherine A -- AI067497/AI/NIAID NIH HHS/ -- GM053234/GM/NIGMS NIH HHS/ -- R01 AI067497/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2013 Aug 16;341(6147):789-92. doi: 10.1126/science.1240925. Epub 2013 Aug 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23907535" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cell Nucleus/metabolism ; Cyclooxygenase 2/genetics ; Cytokines/genetics/metabolism ; Cytosol/metabolism ; *Gene Expression Regulation ; Heterogeneous-Nuclear Ribonucleoproteins/metabolism ; Immunity, Innate/*genetics ; Inflammation/*genetics ; Macrophage Activation ; Macrophages/*immunology/*metabolism ; Mice ; Models, Immunological ; RNA Interference ; RNA, Long Noncoding/*genetics/metabolism ; Toll-Like Receptors/genetics/metabolism ; Transcription Factors/genetics/metabolism ; Transcription, Genetic ; 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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  • 3
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    Coordinated effects of sequence variation on DNA binding, chromatin structure, and transcription (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-10-19
    Description: DNA sequence variation has been associated with quantitative changes in molecular phenotypes such as gene expression, but its impact on chromatin states is poorly characterized. To understand the interplay between chromatin and genetic control of gene regulation, we quantified allelic variability in transcription factor binding, histone modifications, and gene expression within humans. We found abundant allelic specificity in chromatin and extensive local, short-range, and long-range allelic coordination among the studied molecular phenotypes. We observed genetic influence on most of these phenotypes, with histone modifications exhibiting strong context-dependent behavior. Our results implicate transcription factors as primary mediators of sequence-specific regulation of gene expression programs, with histone modifications frequently reflecting the primary regulatory event.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kilpinen, Helena -- Waszak, Sebastian M -- Gschwind, Andreas R -- Raghav, Sunil K -- Witwicki, Robert M -- Orioli, Andrea -- Migliavacca, Eugenia -- Wiederkehr, Michael -- Gutierrez-Arcelus, Maria -- Panousis, Nikolaos I -- Yurovsky, Alisa -- Lappalainen, Tuuli -- Romano-Palumbo, Luciana -- Planchon, Alexandra -- Bielser, Deborah -- Bryois, Julien -- Padioleau, Ismael -- Udin, Gilles -- Thurnheer, Sarah -- Hacker, David -- Core, Leighton J -- Lis, John T -- Hernandez, Nouria -- Reymond, Alexandre -- Deplancke, Bart -- Dermitzakis, Emmanouil T -- GM25232/GM/NIGMS NIH HHS/ -- HG004845/HG/NHGRI NIH HHS/ -- R01 HG004845/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2013 Nov 8;342(6159):744-7. doi: 10.1126/science.1242463. Epub 2013 Oct 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetic Medicine and Development, University of Geneva Medical School, 1211 Geneva, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24136355" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence/genetics ; Binding Sites/genetics ; Chromatin/chemistry/*metabolism ; DNA/chemistry/*metabolism ; *Gene Expression Regulation ; *Genetic Variation ; Histones/chemistry/metabolism ; Humans ; Polymorphism, Single Nucleotide ; Promoter Regions, Genetic ; Transcription Factors/*metabolism ; *Transcription, Genetic
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Extensive variation in chromatin states across humans (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-10-19
    Description: The majority of disease-associated variants lie outside protein-coding regions, suggesting a link between variation in regulatory regions and disease predisposition. We studied differences in chromatin states using five histone modifications, cohesin, and CTCF in lymphoblastoid lines from 19 individuals of diverse ancestry. We found extensive signal variation in regulatory regions, which often switch between active and repressed states across individuals. Enhancer activity is particularly diverse among individuals, whereas gene expression remains relatively stable. Chromatin variability shows genetic inheritance in trios, correlates with genetic variation and population divergence, and is associated with disruptions of transcription factor binding motifs. Overall, our results provide insights into chromatin variation among humans.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4075767/" 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/PMC4075767/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kasowski, Maya -- Kyriazopoulou-Panagiotopoulou, Sofia -- Grubert, Fabian -- Zaugg, Judith B -- Kundaje, Anshul -- Liu, Yuling -- Boyle, Alan P -- Zhang, Qiangfeng Cliff -- Zakharia, Fouad -- Spacek, Damek V -- Li, Jingjing -- Xie, Dan -- Olarerin-George, Anthony -- Steinmetz, Lars M -- Hogenesch, John B -- Kellis, Manolis -- Batzoglou, Serafim -- Snyder, Michael -- R01 HG004037/HG/NHGRI NIH HHS/ -- T32 GM007205/GM/NIGMS NIH HHS/ -- T32 HG000044/HG/NHGRI NIH HHS/ -- T32GM07205/GM/NIGMS NIH HHS/ -- U01 HL107393/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2013 Nov 8;342(6159):750-2. doi: 10.1126/science.1242510. Epub 2013 Oct 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24136358" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Cell Cycle Proteins/genetics/metabolism ; Cell Line, Tumor ; Chromatin/*genetics/*metabolism ; Chromosomal Proteins, Non-Histone/genetics/metabolism ; Enhancer Elements, Genetic/genetics ; *Gene Expression Regulation ; Genetic Predisposition to Disease/*genetics ; Genetic Variation ; Histones/genetics/metabolism ; Humans ; Repressor Proteins/genetics/metabolism ; Transcription Factors/genetics/metabolism
    Print ISSN: 0036-8075
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  • 5
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    Genome-wide quantitative enhancer activity maps identified by STARR-seq (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-01-19
    Description: Genomic enhancers are important regulators of gene expression, but their identification is a challenge, and methods depend on indirect measures of activity. We developed a method termed STARR-seq to directly and quantitatively assess enhancer activity for millions of candidates from arbitrary sources of DNA, which enables screens across entire genomes. When applied to the Drosophila genome, STARR-seq identifies thousands of cell type-specific enhancers across a broad continuum of strengths, links differential gene expression to differences in enhancer activity, and creates a genome-wide quantitative enhancer map. This map reveals the highly complex regulation of transcription, with several independent enhancers for both developmental regulators and ubiquitously expressed genes. STARR-seq can be used to identify and quantify enhancer activity in other eukaryotes, including humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arnold, Cosmas D -- Gerlach, Daniel -- Stelzer, Christoph -- Boryn, Lukasz M -- Rath, Martina -- Stark, Alexander -- New York, N.Y. -- Science. 2013 Mar 1;339(6123):1074-7. doi: 10.1126/science.1232542. Epub 2013 Jan 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Institute of Molecular Pathology (IMP), Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23328393" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Mapping/*methods ; Drosophila melanogaster/genetics/growth & development ; Enhancer Elements, Genetic/*genetics ; Female ; *Gene Expression Regulation ; Gene Expression Regulation, Developmental ; Genome/genetics ; HeLa Cells ; Humans ; Ovary/metabolism ; Sequence Analysis, DNA ; Transcription, Genetic
    Print ISSN: 0036-8075
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  • 6
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    Dynamically reshaping signaling networks to program cell fate via genetic controllers (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-08-21
    Description: Engineering of cell fate through synthetic gene circuits requires methods to precisely implement control around native decision-making pathways and offers the potential to direct cell processes. We demonstrate a class of genetic control systems, molecular network diverters, that interface with a native signaling pathway to route cells to divergent fates in response to environmental signals without modification of native genetic material. A method for identifying control points within natural networks is described that enables the construction of synthetic control systems that activate or attenuate native pathways to direct cell fate. We integrate opposing genetic programs by developing network architectures for reduced antagonism and demonstrate rational tuning of performance. Extension of these control strategies to mammalian systems should facilitate the engineering of complex cellular signaling systems.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4069606/" 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/PMC4069606/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galloway, Kate E -- Franco, Elisa -- Smolke, Christina D -- R01 GM086663/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2013 Sep 20;341(6152):1235005. doi: 10.1126/science.1235005. Epub 2013 Aug 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23950497" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Engineering/*methods ; *Gene Expression Regulation ; Gene Regulatory Networks/*genetics ; Genes, Reporter ; *Genes, Synthetic ; Green Fluorescent Proteins/genetics/metabolism ; MAP Kinase Signaling System/genetics ; Membrane Proteins/genetics/metabolism ; Saccharomyces cerevisiae/genetics ; Saccharomyces cerevisiae Proteins/genetics/metabolism ; Signal Transduction/*genetics
    Print ISSN: 0036-8075
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  • 7
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    An erythroid enhancer of BCL11A subject to genetic variation determines fetal hemoglobin level (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-10-12
    Description: Genome-wide association studies (GWASs) have ascertained numerous trait-associated common genetic variants, frequently localized to regulatory DNA. We found that common genetic variation at BCL11A associated with fetal hemoglobin (HbF) level lies in noncoding sequences decorated by an erythroid enhancer chromatin signature. Fine-mapping uncovers a motif-disrupting common variant associated with reduced transcription factor (TF) binding, modestly diminished BCL11A expression, and elevated HbF. The surrounding sequences function in vivo as a developmental stage-specific, lineage-restricted enhancer. Genome engineering reveals the enhancer is required in erythroid but not B-lymphoid cells for BCL11A expression. These findings illustrate how GWASs may expose functional variants of modest impact within causal elements essential for appropriate gene expression. We propose the GWAS-marked BCL11A enhancer represents an attractive target for therapeutic genome engineering for the beta-hemoglobinopathies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4018826/" 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/PMC4018826/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bauer, Daniel E -- Kamran, Sophia C -- Lessard, Samuel -- Xu, Jian -- Fujiwara, Yuko -- Lin, Carrie -- Shao, Zhen -- Canver, Matthew C -- Smith, Elenoe C -- Pinello, Luca -- Sabo, Peter J -- Vierstra, Jeff -- Voit, Richard A -- Yuan, Guo-Cheng -- Porteus, Matthew H -- Stamatoyannopoulos, John A -- Lettre, Guillaume -- Orkin, Stuart H -- 123382/Canadian Institutes of Health Research/Canada -- K08 DK093705/DK/NIDDK NIH HHS/ -- K08DK093705/DK/NIDDK NIH HHS/ -- P01HL032262/HL/NHLBI NIH HHS/ -- P30 DK049216/DK/NIDDK NIH HHS/ -- P30DK049216/DK/NIDDK NIH HHS/ -- R01 HG005085/HG/NHGRI NIH HHS/ -- R01 HL032259/HL/NHLBI NIH HHS/ -- R01HL032259/HL/NHLBI NIH HHS/ -- U54HG004594/HG/NHGRI NIH HHS/ -- U54HG007010/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Oct 11;342(6155):253-7. doi: 10.1126/science.1242088.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24115442" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/*genetics ; Cell Line, Tumor ; Cells, Cultured ; Chromatin/genetics/metabolism ; Chromatin Immunoprecipitation ; Chromosome Mapping ; *Enhancer Elements, Genetic ; Erythroid Cells/*metabolism ; Fetal Hemoglobin/*biosynthesis/genetics ; *Gene Expression Regulation ; Gene Targeting ; Genetic Engineering ; Genetic Variation ; Genome-Wide Association Study ; Hemoglobinopathies/*genetics/therapy ; Humans ; Mice ; Nuclear Proteins/*genetics ; Precursor Cells, B-Lymphoid/metabolism ; Transcription Factors/genetics/metabolism
    Print ISSN: 0036-8075
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  • 8
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    Measuring chromatin interaction dynamics on the second time scale at single-copy genes (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-10-05
    Description: The chromatin immunoprecipitation (ChIP) assay is widely used to capture interactions between chromatin and regulatory proteins, but it is unknown how stable most native interactions are. Although live-cell imaging suggests short-lived interactions at tandem gene arrays, current methods cannot measure rapid binding dynamics at single-copy genes. We show, by using a modified ChIP assay with subsecond temporal resolution, that the time dependence of formaldehyde cross-linking can be used to extract in vivo on and off rates for site-specific chromatin interactions varying over a ~100-fold dynamic range. By using the method, we show that a regulatory process can shift weakly bound TATA-binding protein to stable promoter interactions, thereby facilitating transcription complex formation. This assay provides an approach for systematic, quantitative analyses of chromatin binding dynamics in vivo.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3997053/" 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/PMC3997053/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Poorey, Kunal -- Viswanathan, Ramya -- Carver, Melissa N -- Karpova, Tatiana S -- Cirimotich, Shana M -- McNally, James G -- Bekiranov, Stefan -- Auble, David T -- GM55763/GM/NIGMS NIH HHS/ -- R01 GM055763/GM/NIGMS NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2013 Oct 18;342(6156):369-72. doi: 10.1126/science.1242369. Epub 2013 Oct 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Genetics, University of Virginia Health System, Charlottesville, VA 22908, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24091704" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/chemistry/metabolism ; Chromatin/chemistry/*metabolism ; Chromatin Immunoprecipitation/*methods ; Cross-Linking Reagents/chemistry ; DNA-Binding Proteins/chemistry/metabolism ; Formaldehyde/chemistry ; Gene Dosage ; *Gene Expression Regulation ; Kinetics ; Promoter Regions, Genetic ; Saccharomyces cerevisiae Proteins/chemistry/metabolism ; TATA-Binding Protein Associated Factors/chemistry/metabolism ; TATA-Box Binding Protein/chemistry/*metabolism ; Transcription Factors/chemistry/metabolism
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  • 9
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    Translational repression and eIF4A2 activity are critical for microRNA-mediated gene regulation (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-04-06
    Description: MicroRNAs (miRNAs) control gene expression through both translational repression and degradation of target messenger RNAs (mRNAs). However, the interplay between these processes and the precise molecular mechanisms involved remain unclear. Here, we show that translational inhibition is the primary event required for mRNA degradation. Translational inhibition depends on miRNAs impairing the function of the eIF4F initiation complex. We define the RNA helicase eIF4A2 as the key factor of eIF4F through which miRNAs function. We uncover a correlation between the presence of miRNA target sites in the 3' untranslated region (3'UTR) of mRNAs and secondary structure in the 5'UTR and show that mRNAs with unstructured 5'UTRs are refractory to miRNA repression. These data support a linear model for miRNA-mediated gene regulation in which translational repression via eIF4A2 is required first, followed by mRNA destabilization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meijer, H A -- Kong, Y W -- Lu, W T -- Wilczynska, A -- Spriggs, R V -- Robinson, S W -- Godfrey, J D -- Willis, A E -- Bushell, M -- MC_UP_A600_1023/Medical Research Council/United Kingdom -- MC_UP_A600_1024/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2013 Apr 5;340(6128):82-5. doi: 10.1126/science.1231197.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Toxicology Unit, Hodgkin Building, Lancaster Road, Leicester LE1 9HN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23559250" target="_blank"〉PubMed〈/a〉
    Keywords: Eukaryotic Initiation Factor-4A/*biosynthesis ; *Gene Expression Regulation ; HEK293 Cells ; HeLa Cells ; Humans ; MicroRNAs/*metabolism ; *Protein Biosynthesis ; *RNA Stability ; RNA, Messenger/*metabolism
    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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  • 10
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    TH17 cell differentiation is regulated by the circadian clock (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-11-10
    Description: Circadian clocks regulate numerous physiological processes that vary across the day-night (diurnal) cycle, but if and how the circadian clock regulates the adaptive immune system is mostly unclear. Interleukin-17-producing CD4(+) T helper (T(H)17) cells are proinflammatory immune cells that protect against bacterial and fungal infections at mucosal surfaces. Their lineage specification is regulated by the orphan nuclear receptor RORgammat. We show that the transcription factor NFIL3 suppresses T(H)17 cell development by directly binding and repressing the Rorgammat promoter. NFIL3 links T(H)17 cell development to the circadian clock network through the transcription factor REV-ERBalpha. Accordingly, TH17 lineage specification varies diurnally and is altered in Rev-erbalpha(-/-) mice. Light-cycle disruption elevated intestinal T(H)17 cell frequencies and increased susceptibility to inflammatory disease. Thus, lineage specification of a key immune cell is under direct circadian control.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4165400/" 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/PMC4165400/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yu, Xiaofei -- Rollins, Darcy -- Ruhn, Kelly A -- Stubblefield, Jeremy J -- Green, Carla B -- Kashiwada, Masaki -- Rothman, Paul B -- Takahashi, Joseph S -- Hooper, Lora V -- R01 DK070855/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Nov 8;342(6159):727-30. doi: 10.1126/science.1243884.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, The 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/24202171" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basic-Leucine Zipper Transcription Factors/genetics/*metabolism ; CLOCK Proteins/genetics ; Cell Differentiation/*genetics ; Cell Lineage/genetics ; Circadian Clocks/genetics/*immunology ; *Gene Expression Regulation ; Germ-Free Life ; HEK293 Cells ; Humans ; Intestine, Small/immunology/microbiology ; Jurkat Cells ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Nuclear Receptor Subfamily 1, Group D, Member 1/genetics/metabolism ; Nuclear Receptor Subfamily 1, Group F, Member 3/*genetics ; Promoter Regions, Genetic ; Th17 Cells/*cytology
    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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