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  • 1
    Publication Date: 2008-08-30
    Description: Stem cells are defined as self-renewing cell populations that can differentiate into multiple distinct cell types. However, hundreds of different human cell lines from embryonic, fetal and adult sources have been called stem cells, even though they range from pluripotent cells-typified by embryonic stem cells, which are capable of virtually unlimited proliferation and differentiation-to adult stem cell lines, which can generate a far more limited repertoire of differentiated cell types. The rapid increase in reports of new sources of stem cells and their anticipated value to regenerative medicine has highlighted the need for a general, reproducible method for classification of these cells. We report here the creation and analysis of a database of global gene expression profiles (which we call the 'stem cell matrix') that enables the classification of cultured human stem cells in the context of a wide variety of pluripotent, multipotent and differentiated cell types. Using an unsupervised clustering method to categorize a collection of approximately 150 cell samples, we discovered that pluripotent stem cell lines group together, whereas other cell types, including brain-derived neural stem cell lines, are very diverse. Using further bioinformatic analysis we uncovered a protein-protein network (PluriNet) that is shared by the pluripotent cells (embryonic stem cells, embryonal carcinomas and induced pluripotent cells). Analysis of published data showed that the PluriNet seems to be a common characteristic of pluripotent cells, including mouse embryonic stem and induced pluripotent cells and human oocytes. Our results offer a new strategy for classifying stem cells and support the idea that pluripotency and self-renewal are under tight control by specific molecular networks.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2637443/" 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/PMC2637443/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Muller, Franz-Josef -- Laurent, Louise C -- Kostka, Dennis -- Ulitsky, Igor -- Williams, Roy -- Lu, Christina -- Park, In-Hyun -- Rao, Mahendra S -- Shamir, Ron -- Schwartz, Philip H -- Schmidt, Nils O -- Loring, Jeanne F -- K12 5K12HD000849-20/HD/NICHD NIH HHS/ -- P20 GM075059/GM/NIGMS NIH HHS/ -- P20 GM075059-01/GM/NIGMS NIH HHS/ -- England -- Nature. 2008 Sep 18;455(7211):401-5. doi: 10.1038/nature07213. Epub 2008 Aug 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Regenerative Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA. fj.mueller@zip-kiel.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18724358" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; Artificial Intelligence ; Cell Differentiation ; Cell Line ; Computational Biology ; Databases, Factual ; Embryonic Stem Cells/classification/metabolism ; *Gene Expression Profiling ; Humans ; Mice ; Multipotent Stem Cells/classification/metabolism ; Oligonucleotide Array Sequence Analysis ; Oocytes/classification/metabolism ; Phenotype ; Pluripotent Stem Cells/classification/metabolism ; Protein Binding ; Stem Cells/*classification/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2011-10-14
    Description: The comparison of related genomes has emerged as a powerful lens for genome interpretation. Here we report the sequencing and comparative analysis of 29 eutherian genomes. We confirm that at least 5.5% of the human genome has undergone purifying selection, and locate constrained elements covering approximately 4.2% of the genome. We use evolutionary signatures and comparisons with experimental data sets to suggest candidate functions for approximately 60% of constrained bases. These elements reveal a small number of new coding exons, candidate stop codon readthrough events and over 10,000 regions of overlapping synonymous constraint within protein-coding exons. We find 220 candidate RNA structural families, and nearly a million elements overlapping potential promoter, enhancer and insulator regions. We report specific amino acid residues that have undergone positive selection, 280,000 non-coding elements exapted from mobile elements and more than 1,000 primate- and human-accelerated elements. Overlap with disease-associated variants indicates that our findings will be relevant for studies of human biology, health and disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3207357/" 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/PMC3207357/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lindblad-Toh, Kerstin -- Garber, Manuel -- Zuk, Or -- Lin, Michael F -- Parker, Brian J -- Washietl, Stefan -- Kheradpour, Pouya -- Ernst, Jason -- Jordan, Gregory -- Mauceli, Evan -- Ward, Lucas D -- Lowe, Craig B -- Holloway, Alisha K -- Clamp, Michele -- Gnerre, Sante -- Alfoldi, Jessica -- Beal, Kathryn -- Chang, Jean -- Clawson, Hiram -- Cuff, James -- Di Palma, Federica -- Fitzgerald, Stephen -- Flicek, Paul -- Guttman, Mitchell -- Hubisz, Melissa J -- Jaffe, David B -- Jungreis, Irwin -- Kent, W James -- Kostka, Dennis -- Lara, Marcia -- Martins, Andre L -- Massingham, Tim -- Moltke, Ida -- Raney, Brian J -- Rasmussen, Matthew D -- Robinson, Jim -- Stark, Alexander -- Vilella, Albert J -- Wen, Jiayu -- Xie, Xiaohui -- Zody, Michael C -- Broad Institute Sequencing Platform and Whole Genome Assembly Team -- Baldwin, Jen -- Bloom, Toby -- Chin, Chee Whye -- Heiman, Dave -- Nicol, Robert -- Nusbaum, Chad -- Young, Sarah -- Wilkinson, Jane -- Worley, Kim C -- Kovar, Christie L -- Muzny, Donna M -- Gibbs, Richard A -- Baylor College of Medicine Human Genome Sequencing Center Sequencing Team -- Cree, Andrew -- Dihn, Huyen H -- Fowler, Gerald -- Jhangiani, Shalili -- Joshi, Vandita -- Lee, Sandra -- Lewis, Lora R -- Nazareth, Lynne V -- Okwuonu, Geoffrey -- Santibanez, Jireh -- Warren, Wesley C -- Mardis, Elaine R -- Weinstock, George M -- Wilson, Richard K -- Genome Institute at Washington University -- Delehaunty, Kim -- Dooling, David -- Fronik, Catrina -- Fulton, Lucinda -- Fulton, Bob -- Graves, Tina -- Minx, Patrick -- Sodergren, Erica -- Birney, Ewan -- Margulies, Elliott H -- Herrero, Javier -- Green, Eric D -- Haussler, David -- Siepel, Adam -- Goldman, Nick -- Pollard, Katherine S -- Pedersen, Jakob S -- Lander, Eric S -- Kellis, Manolis -- 095908/Wellcome Trust/United Kingdom -- GM82901/GM/NIGMS NIH HHS/ -- R01 HG003474/HG/NHGRI NIH HHS/ -- R01 HG004037/HG/NHGRI NIH HHS/ -- U54 HG003067/HG/NHGRI NIH HHS/ -- U54 HG003067-09/HG/NHGRI NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2011 Oct 12;478(7370):476-82. doi: 10.1038/nature10530.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Broad Institute of Harvard and Massachusetts Institute of Technology, 7 Cambridge Center, Cambridge, Massachusetts 02142, USA. kersli@broadinstitute.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21993624" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Disease ; *Evolution, Molecular ; Exons/genetics ; Genome/*genetics ; Genome, Human/*genetics ; Genomics ; Health ; Humans ; Mammals/*genetics ; Molecular Sequence Annotation ; Phylogeny ; RNA/classification/genetics ; Selection, Genetic/genetics ; Sequence Alignment ; Sequence Analysis, DNA
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2014-09-12
    Description: Gibbons are small arboreal apes that display an accelerated rate of evolutionary chromosomal rearrangement and occupy a key node in the primate phylogeny between Old World monkeys and great apes. Here we present the assembly and analysis of a northern white-cheeked gibbon (Nomascus leucogenys) genome. We describe the propensity for a gibbon-specific retrotransposon (LAVA) to insert into chromosome segregation genes and alter transcription by providing a premature termination site, suggesting a possible molecular mechanism for the genome plasticity of the gibbon lineage. We further show that the gibbon genera (Nomascus, Hylobates, Hoolock and Symphalangus) experienced a near-instantaneous radiation approximately 5 million years ago, coincident with major geographical changes in southeast Asia that caused cycles of habitat compression and expansion. Finally, we identify signatures of positive selection in genes important for forelimb development (TBX5) and connective tissues (COL1A1) that may have been involved in the adaptation of gibbons to their arboreal habitat.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4249732/" 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/PMC4249732/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carbone, Lucia -- Harris, R Alan -- Gnerre, Sante -- Veeramah, Krishna R -- Lorente-Galdos, Belen -- Huddleston, John -- Meyer, Thomas J -- Herrero, Javier -- Roos, Christian -- Aken, Bronwen -- Anaclerio, Fabio -- Archidiacono, Nicoletta -- Baker, Carl -- Barrell, Daniel -- Batzer, Mark A -- Beal, Kathryn -- Blancher, Antoine -- Bohrson, Craig L -- Brameier, Markus -- Campbell, Michael S -- Capozzi, Oronzo -- Casola, Claudio -- Chiatante, Giorgia -- Cree, Andrew -- Damert, Annette -- de Jong, Pieter J -- Dumas, Laura -- Fernandez-Callejo, Marcos -- Flicek, Paul -- Fuchs, Nina V -- Gut, Ivo -- Gut, Marta -- Hahn, Matthew W -- Hernandez-Rodriguez, Jessica -- Hillier, LaDeana W -- Hubley, Robert -- Ianc, Bianca -- Izsvak, Zsuzsanna -- Jablonski, Nina G -- Johnstone, Laurel M -- Karimpour-Fard, Anis -- Konkel, Miriam K -- Kostka, Dennis -- Lazar, Nathan H -- Lee, Sandra L -- Lewis, Lora R -- Liu, Yue -- Locke, Devin P -- Mallick, Swapan -- Mendez, Fernando L -- Muffato, Matthieu -- Nazareth, Lynne V -- Nevonen, Kimberly A -- O'Bleness, Majesta -- Ochis, Cornelia -- Odom, Duncan T -- Pollard, Katherine S -- Quilez, Javier -- Reich, David -- Rocchi, Mariano -- Schumann, Gerald G -- Searle, Stephen -- Sikela, James M -- Skollar, Gabriella -- Smit, Arian -- Sonmez, Kemal -- ten Hallers, Boudewijn -- Terhune, Elizabeth -- Thomas, Gregg W C -- Ullmer, Brygg -- Ventura, Mario -- Walker, Jerilyn A -- Wall, Jeffrey D -- Walter, Lutz -- Ward, Michelle C -- Wheelan, Sarah J -- Whelan, Christopher W -- White, Simon -- Wilhelm, Larry J -- Woerner, August E -- Yandell, Mark -- Zhu, Baoli -- Hammer, Michael F -- Marques-Bonet, Tomas -- Eichler, Evan E -- Fulton, Lucinda -- Fronick, Catrina -- Muzny, Donna M -- Warren, Wesley C -- Worley, Kim C -- Rogers, Jeffrey -- Wilson, Richard K -- Gibbs, Richard A -- 095908/Wellcome Trust/United Kingdom -- 15603/Cancer Research UK/United Kingdom -- 260372/European Research Council/International -- HG002385/HG/NHGRI NIH HHS/ -- P30 AA019355/AA/NIAAA NIH HHS/ -- P30CA006973/CA/NCI NIH HHS/ -- P51 RR000163/RR/NCRR NIH HHS/ -- R01 GM059290/GM/NIGMS NIH HHS/ -- R01 GM59290/GM/NIGMS NIH HHS/ -- R01 HG002385/HG/NHGRI NIH HHS/ -- R01 HG002939/HG/NHGRI NIH HHS/ -- R01 HG005226/HG/NHGRI NIH HHS/ -- R01 MH081203/MH/NIMH NIH HHS/ -- R01_HG005226/HG/NHGRI NIH HHS/ -- T15 LM007088/LM/NLM NIH HHS/ -- U41 HG007497/HG/NHGRI NIH HHS/ -- U41 HG007497-01/HG/NHGRI NIH HHS/ -- U41HG007234/HG/NHGRI NIH HHS/ -- U54 HG003079/HG/NHGRI NIH HHS/ -- U54 HG003273/HG/NHGRI NIH HHS/ -- U54HG003273/HG/NHGRI NIH HHS/ -- WT095908/Wellcome Trust/United Kingdom -- WT098051/Wellcome Trust/United Kingdom -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Sep 11;513(7517):195-201. doi: 10.1038/nature13679.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Oregon Health &Science University, Department of Behavioral Neuroscience, 3181 SW Sam Jackson Park Road Portland, Oregon 97239, USA. [2] Oregon National Primate Research Center, Division of Neuroscience, 505 NW 185th Avenue, Beaverton, Oregon 97006, USA. [3] Oregon Health &Science University, Department of Molecular &Medical Genetics, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. [4] Oregon Health &Science University, Bioinformatics and Computational Biology Division, Department of Medical Informatics &Clinical Epidemiology, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. ; Baylor College of Medicine, Department of Molecular and Human Genetics, One Baylor Plaza, Houston, Texas 77030, USA. ; Nabsys, 60 Clifford Street, Providence, Rhode Island 02903, USA. ; 1] University of Arizona, ARL Division of Biotechnology, Tucson, Arizona 85721, USA. [2] Stony Brook University, Department of Ecology and Evolution, Stony Brook, New York 11790, USA. ; IBE, Institut de Biologia Evolutiva (UPF-CSIC), Universitat Pompeu Fabra, PRBB, Doctor Aiguader, 88, 08003 Barcelona, Spain. ; 1] Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA. [2] Howard Hughes Medical Institute, 1705 NE Pacific Street, Seattle, Washington 98195, USA. ; Oregon Health &Science University, Department of Behavioral Neuroscience, 3181 SW Sam Jackson Park Road Portland, Oregon 97239, USA. ; 1] European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. [2] The Genome Analysis Centre, Norwich Research Park, Norwich NR4 7UH, UK. [3] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; Leibniz Institute for Primate Research, Gene Bank of Primates, German Primate Center, Gottingen 37077, Germany. ; 1] European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. [2] European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. ; University of Bari, Department of Biology, Via Orabona 4, 70125, Bari, Italy. ; Department of Genome Sciences, University of Washington School of Medicine, Seattle, Washington 98195, USA. ; Louisiana State University, Department of Biological Sciences, Baton Rouge, Louisiana 70803, USA. ; European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. ; University of Paul Sabatier, Toulouse 31062, France. ; The Johns Hopkins University School of Medicine, Department of Oncology, Division of Biostatistics and Bioinformatics, Baltimore, Maryland 21205, USA. ; University of Utah, Salt Lake City, Utah 84112, USA. ; Texas A&M University, Department of Ecosystem Science and Management, College Station, Texas 77843, USA. ; Human Genome Sequencing Center, Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77030, USA. ; Babes-Bolyai-University, Institute for Interdisciplinary Research in Bio-Nano-Sciences, Molecular Biology Center, Cluj-Napoca 400084, Romania. ; Children's Hospital Oakland Research Institute, BACPAC Resources, Oakland, California 94609, USA. ; University of Colorado School of Medicine, Department of Biochemistry and Molecular Genetics, Aurora, Colorado 80045, USA. ; Max Delbruck Center for Molecular Medicine, Berlin 13125, Germany. ; Centro Nacional de Analisis Genomico (CNAG), Parc Cientific de Barcelona, Barcelona 08028, Spain. ; Indiana University, School of Informatics and Computing, Bloomington, Indiana 47408, USA. ; The Genome Center at Washington University, Washington University School of Medicine, 4444 Forest Park Avenue, Saint Louis, Missouri 63108, USA. ; Institute for Systems Biology, Seattle, Washington 98109-5234, USA. ; The Pennsylvania State University, Department of Anthropology, University Park, Pennsylvania 16802, USA. ; University of Arizona, ARL Division of Biotechnology, Tucson, Arizona 85721, USA. ; University of Pittsburgh School of Medicine, Department of Developmental Biology, Department of Computational and Systems Biology, Pittsburg, Pennsylvania 15261, USA. ; Oregon Health &Science University, Bioinformatics and Computational Biology Division, Department of Medical Informatics &Clinical Epidemiology, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. ; 1] The Genome Center at Washington University, Washington University School of Medicine, 4444 Forest Park Avenue, Saint Louis, Missouri 63108, USA. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; Harvard Medical School, Department of Genetics, Boston, Massachusetts 02115, USA. ; 1] University of Arizona, ARL Division of Biotechnology, Tucson, Arizona 85721, USA. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; Oregon National Primate Research Center, Division of Neuroscience, 505 NW 185th Avenue, Beaverton, Oregon 97006, USA. ; 1] European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. [2] University of Cambridge, Cancer Research UK-Cambridge Institute, Cambridge CB2 0RE, UK. ; 1] University of California, Gladstone Institutes, San Francisco, California 94158-226, USA. [2] Institute for Human Genetics, University of California, San Francisco, California 94143-0794, USA. [3] Division of Biostatistics, University of California, San Francisco, California 94143-0794, USA. ; Paul Ehrlich Institute, Division of Medical Biotechnology, 63225 Langen, Germany. ; European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK. ; Gibbon Conservation Center, 19100 Esguerra Rd, Santa Clarita, California 91350, USA. ; 1] Oregon Health &Science University, Bioinformatics and Computational Biology Division, Department of Medical Informatics &Clinical Epidemiology, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. [2] Oregon Health &Science University, Center for Spoken Language Understanding, Institute on Development and Disability, Portland, Oregon 97239, USA. ; 1] Children's Hospital Oakland Research Institute, BACPAC Resources, Oakland, California 94609, USA. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; Louisiana State University, School of Electrical Engineering and Computer Science, Baton Rouge, Louisiana 70803, USA. ; 1] Institute for Human Genetics, University of California, San Francisco, California 94143-0794, USA. [2] Division of Biostatistics, University of California, San Francisco, California 94143-0794, USA. ; 1] University of Cambridge, Cancer Research UK-Cambridge Institute, Cambridge CB2 0RE, UK. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; 1] Oregon Health &Science University, Center for Spoken Language Understanding, Institute on Development and Disability, Portland, Oregon 97239, USA. [2] Bill Lyons Informatics Center, UCL Cancer Institute, University College London, London WC1E 6DD, UK (J.He); Seven Bridges Genomics, Cambridge, Massachusetts 02138, USA (D.P.L.); Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA (F.L.M.); BioNano Genomics, San Diego, California 92121, USA (B.t.H.); University of Chicago, Department of Human Genetics, Chicago, Illinois 60637, USA (M.C.W.); Stanley Center for Psychiatric Research, Broad Institute, Cambridge, Massachusetts 02138, USA (C.W.W.); The CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China (B.Z.). ; 1] IBE, Institut de Biologia Evolutiva (UPF-CSIC), Universitat Pompeu Fabra, PRBB, Doctor Aiguader, 88, 08003 Barcelona, Spain. [2] Centro Nacional de Analisis Genomico (CNAG), Parc Cientific de Barcelona, Barcelona 08028, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25209798" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Evolution, Molecular ; Genome/*genetics ; Hominidae/classification/genetics ; Humans ; Hylobates/*classification/*genetics ; *Karyotype ; Molecular Sequence Data ; *Phylogeny ; Retroelements/genetics ; Selection, Genetic ; Transcription Termination, Genetic
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2014-08-27
    Description: Motivation : Methylation of CpG dinucleotides is a prevalent epigenetic modification that is required for proper development in vertebrates. Genome-wide DNA methylation assays have become increasingly common, and this has enabled characterization of DNA methylation in distinct stages across differentiating cellular lineages. Changes in CpG methylation are essential to cellular differentiation; however, current methods for modeling methylation dynamics do not account for the dependency structure between precursor and dependent cell types. Results : We developed a continuous-time Markov chain approach, based on the observation that changes in methylation state over tissue differentiation can be modeled similarly to DNA nucleotide changes over evolutionary time. This model explicitly takes precursor to descendant relationships into account and enables inference of CpG methylation dynamics. To illustrate our method, we analyzed a high-resolution methylation map of the differentiation of mouse stem cells into several blood cell types. Our model can successfully infer unobserved CpG methylation states from observations at the same sites in related cell types (90% correct), and this approach more accurately reconstructs missing data than imputation based on neighboring CpGs (84% correct). Additionally, the single CpG resolution of our methylation dynamics estimates enabled us to show that DNA sequence context of CpG sites is informative about methylation dynamics across tissue differentiation. Finally, we identified genomic regions with clusters of highly dynamic CpGs and present a likely functional example. Our work establishes a framework for inference and modeling that is well suited to DNA methylation data, and our success suggests that other methods for analyzing DNA nucleotide substitutions will also translate to the modeling of epigenetic phenomena. Availability and implementation : Source code is available at www.kostkalab.net/software . Contact : tony.capra@vanderbilt.edu or kostka@pitt.edu
    Print ISSN: 1367-4803
    Electronic ISSN: 1460-2059
    Topics: Biology , Computer Science , Medicine
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  • 5
    Publication Date: 2014-08-26
    Print ISSN: 1367-4803
    Electronic ISSN: 1460-2059
    Topics: Biology , Computer Science , Medicine
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  • 6
    Publication Date: 2008-08-21
    Print ISSN: 1367-4803
    Electronic ISSN: 1460-2059
    Topics: Biology , Computer Science , Medicine
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  • 7
    Publication Date: 2004-07-19
    Print ISSN: 1367-4803
    Electronic ISSN: 1460-2059
    Topics: Biology , Computer Science , Medicine
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  • 8
    Publication Date: 2011-11-10
    Print ISSN: 0737-4038
    Electronic ISSN: 1537-1719
    Topics: Biology
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  • 9
    Publication Date: 1984-01-01
    Print ISSN: 0022-3093
    Electronic ISSN: 1873-4812
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Elsevier
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  • 10
    Publication Date: 2019-07-13
    Description: Shock recovery experiments which were carried out in the 9 to 12 GPa range on 1.4 distension Mo and appear adequate to compact to full density ( 45 (SIGMA)m) powders were examined. The stress levels, however, are below those calculated to be from 100 to approx. 22 GPa which a frictional heating model predicts are required to consolidate approx. 10 to 50 (SIGMA)m particles. The model predicts that powders that have a distension of m=1.6 shock pressures of 14 to 72 GPa are required to consolidate Mo powders in the 50 to 10 (SIGMA)m range.
    Keywords: METALLIC MATERIALS
    Type: NASA-CR-173154 , NAS 1.26:173154 , DE84-003713 , CONF-830719-58 , Am. Phys. Soc. Meeting on Shock Waves in Condensed Media; Jul 18, 1983; Santa Fe, NM; United States
    Format: application/pdf
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