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  • 1
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    The dynamic genome of Hydra (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-03-17
    Description: The freshwater cnidarian Hydra was first described in 1702 and has been the object of study for 300 years. Experimental studies of Hydra between 1736 and 1744 culminated in the discovery of asexual reproduction of an animal by budding, the first description of regeneration in an animal, and successful transplantation of tissue between animals. Today, Hydra is an important model for studies of axial patterning, stem cell biology and regeneration. Here we report the genome of Hydra magnipapillata and compare it to the genomes of the anthozoan Nematostella vectensis and other animals. The Hydra genome has been shaped by bursts of transposable element expansion, horizontal gene transfer, trans-splicing, and simplification of gene structure and gene content that parallel simplification of the Hydra life cycle. We also report the sequence of the genome of a novel bacterium stably associated with H. magnipapillata. Comparisons of the Hydra genome to the genomes of other animals shed light on the evolution of epithelia, contractile tissues, developmentally regulated transcription factors, the Spemann-Mangold organizer, pluripotency genes and the neuromuscular junction.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4479502/" 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/PMC4479502/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chapman, Jarrod A -- Kirkness, Ewen F -- Simakov, Oleg -- Hampson, Steven E -- Mitros, Therese -- Weinmaier, Thomas -- Rattei, Thomas -- Balasubramanian, Prakash G -- Borman, Jon -- Busam, Dana -- Disbennett, Kathryn -- Pfannkoch, Cynthia -- Sumin, Nadezhda -- Sutton, Granger G -- Viswanathan, Lakshmi Devi -- Walenz, Brian -- Goodstein, David M -- Hellsten, Uffe -- Kawashima, Takeshi -- Prochnik, Simon E -- Putnam, Nicholas H -- Shu, Shengquiang -- Blumberg, Bruce -- Dana, Catherine E -- Gee, Lydia -- Kibler, Dennis F -- Law, Lee -- Lindgens, Dirk -- Martinez, Daniel E -- Peng, Jisong -- Wigge, Philip A -- Bertulat, Bianca -- Guder, Corina -- Nakamura, Yukio -- Ozbek, Suat -- Watanabe, Hiroshi -- Khalturin, Konstantin -- Hemmrich, Georg -- Franke, Andre -- Augustin, Rene -- Fraune, Sebastian -- Hayakawa, Eisuke -- Hayakawa, Shiho -- Hirose, Mamiko -- Hwang, Jung Shan -- Ikeo, Kazuho -- Nishimiya-Fujisawa, Chiemi -- Ogura, Atshushi -- Takahashi, Toshio -- Steinmetz, Patrick R H -- Zhang, Xiaoming -- Aufschnaiter, Roland -- Eder, Marie-Kristin -- Gorny, Anne-Kathrin -- Salvenmoser, Willi -- Heimberg, Alysha M -- Wheeler, Benjamin M -- Peterson, Kevin J -- Bottger, Angelika -- Tischler, Patrick -- Wolf, Alexander -- Gojobori, Takashi -- Remington, Karin A -- Strausberg, Robert L -- Venter, J Craig -- Technau, Ulrich -- Hobmayer, Bert -- Bosch, Thomas C G -- Holstein, Thomas W -- Fujisawa, Toshitaka -- Bode, Hans R -- David, Charles N -- Rokhsar, Daniel S -- Steele, Robert E -- P 21108/Austrian Science Fund FWF/Austria -- R24 RR015088/RR/NCRR NIH HHS/ -- England -- Nature. 2010 Mar 25;464(7288):592-6. doi: 10.1038/nature08830. Epub 2010 Mar 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉US Department of Energy Joint Genome Institute, Walnut Creek, California 94598, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20228792" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthozoa/genetics ; Comamonadaceae/genetics ; DNA Transposable Elements/genetics ; Gene Transfer, Horizontal/genetics ; Genome/*genetics ; Genome, Bacterial/genetics ; Hydra/*genetics/microbiology/ultrastructure ; Molecular Sequence Data ; Neuromuscular Junction/ultrastructure
    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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  • 2
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    Chemical genetics of Plasmodium falciparum (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-05-21
    Description: Malaria caused by Plasmodium falciparum is a disease that is responsible for 880,000 deaths per year worldwide. Vaccine development has proved difficult and resistance has emerged for most antimalarial drugs. To discover new antimalarial chemotypes, we have used a phenotypic forward chemical genetic approach to assay 309,474 chemicals. Here we disclose structures and biological activity of the entire library-many of which showed potent in vitro activity against drug-resistant P. falciparum strains-and detailed profiling of 172 representative candidates. A reverse chemical genetic study identified 19 new inhibitors of 4 validated drug targets and 15 novel binders among 61 malarial proteins. Phylochemogenetic profiling in several organisms revealed similarities between Toxoplasma gondii and mammalian cell lines and dissimilarities between P. falciparum and related protozoans. One exemplar compound displayed efficacy in a murine model. Our findings provide the scientific community with new starting points for malaria drug discovery.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2874979/" 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/PMC2874979/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guiguemde, W Armand -- Shelat, Anang A -- Bouck, David -- Duffy, Sandra -- Crowther, Gregory J -- Davis, Paul H -- Smithson, David C -- Connelly, Michele -- Clark, Julie -- Zhu, Fangyi -- Jimenez-Diaz, Maria B -- Martinez, Maria S -- Wilson, Emily B -- Tripathi, Abhai K -- Gut, Jiri -- Sharlow, Elizabeth R -- Bathurst, Ian -- El Mazouni, Farah -- Fowble, Joseph W -- Forquer, Isaac -- McGinley, Paula L -- Castro, Steve -- Angulo-Barturen, Inigo -- Ferrer, Santiago -- Rosenthal, Philip J -- Derisi, Joseph L -- Sullivan, David J -- Lazo, John S -- Roos, David S -- Riscoe, Michael K -- Phillips, Margaret A -- Rathod, Pradipsinh K -- Van Voorhis, Wesley C -- Avery, Vicky M -- Guy, R Kiplin -- AI045774/AI/NIAID NIH HHS/ -- AI053680/AI/NIAID NIH HHS/ -- AI067921/AI/NIAID NIH HHS/ -- AI075517/AI/NIAID NIH HHS/ -- AI075594/AI/NIAID NIH HHS/ -- AI080625/AI/NIAID NIH HHS/ -- AI082617/AI/NIAID NIH HHS/ -- AI28724/AI/NIAID NIH HHS/ -- AI35707/AI/NIAID NIH HHS/ -- AI53862/AI/NIAID NIH HHS/ -- AI772682/AI/NIAID NIH HHS/ -- CA78039/CA/NCI NIH HHS/ -- F32 AI077268/AI/NIAID NIH HHS/ -- F32 AI077268-03/AI/NIAID NIH HHS/ -- P01 AI035707/AI/NIAID NIH HHS/ -- P01 AI035707-140007/AI/NIAID NIH HHS/ -- P01 CA078039-10/CA/NCI NIH HHS/ -- P41 RR001614/RR/NCRR NIH HHS/ -- P41 RR001614-246970/RR/NCRR NIH HHS/ -- R01 AI045774/AI/NIAID NIH HHS/ -- R01 AI045774-09/AI/NIAID NIH HHS/ -- R37 AI028724/AI/NIAID NIH HHS/ -- R37 AI028724-17/AI/NIAID NIH HHS/ -- R56 AI082617/AI/NIAID NIH HHS/ -- R56 AI082617-01/AI/NIAID NIH HHS/ -- U01 AI053862/AI/NIAID NIH HHS/ -- U01 AI053862-05/AI/NIAID NIH HHS/ -- U01 AI075594-03/AI/NIAID NIH HHS/ -- UL1 TR000005/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 May 20;465(7296):311-5. doi: 10.1038/nature09099.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical Biology and Therapeutics, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20485428" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antimalarials/*analysis/isolation & purification/*pharmacology ; Cell Line ; *Drug Discovery ; Drug Evaluation, Preclinical ; Drug Resistance/drug effects ; Drug Therapy, Combination ; Erythrocytes/drug effects/parasitology ; Humans ; Malaria, Falciparum/drug therapy/parasitology ; Mice ; Phenotype ; Phylogeny ; Plasmodium falciparum/*drug effects/*genetics/metabolism ; Reproducibility of Results ; Small Molecule Libraries/chemistry/pharmacology
    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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    CLP1 links tRNA metabolism to progressive motor-neuron loss (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-03-12
    Description: CLP1 was the first mammalian RNA kinase to be identified. However, determining its in vivo function has been elusive. Here we generated kinase-dead Clp1 (Clp1(K/K)) mice that show a progressive loss of spinal motor neurons associated with axonal degeneration in the peripheral nerves and denervation of neuromuscular junctions, resulting in impaired motor function, muscle weakness, paralysis and fatal respiratory failure. Transgenic rescue experiments show that CLP1 functions in motor neurons. Mechanistically, loss of CLP1 activity results in accumulation of a novel set of small RNA fragments, derived from aberrant processing of tyrosine pre-transfer RNA. These tRNA fragments sensitize cells to oxidative-stress-induced p53 (also known as TRP53) activation and p53-dependent cell death. Genetic inactivation of p53 rescues Clp1(K/K) mice from the motor neuron loss, muscle denervation and respiratory failure. Our experiments uncover a mechanistic link between tRNA processing, formation of a new RNA species and progressive loss of lower motor neurons regulated by p53.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3674495/" 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/PMC3674495/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hanada, Toshikatsu -- Weitzer, Stefan -- Mair, Barbara -- Bernreuther, Christian -- Wainger, Brian J -- Ichida, Justin -- Hanada, Reiko -- Orthofer, Michael -- Cronin, Shane J -- Komnenovic, Vukoslav -- Minis, Adi -- Sato, Fuminori -- Mimata, Hiromitsu -- Yoshimura, Akihiko -- Tamir, Ido -- Rainer, Johannes -- Kofler, Reinhard -- Yaron, Avraham -- Eggan, Kevin C -- Woolf, Clifford J -- Glatzel, Markus -- Herbst, Ruth -- Martinez, Javier -- Penninger, Josef M -- K99NS077435-01A1/NS/NINDS NIH HHS/ -- NS038253/NS/NINDS NIH HHS/ -- P 19223/Austrian Science Fund FWF/Austria -- P 21667/Austrian Science Fund FWF/Austria -- R00 NS077435/NS/NINDS NIH HHS/ -- R01 NS038253/NS/NINDS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Mar 28;495(7442):474-80. doi: 10.1038/nature11923. Epub 2013 Mar 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna 1030, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23474986" target="_blank"〉PubMed〈/a〉
    Keywords: Amyotrophic Lateral Sclerosis ; Animals ; Animals, Newborn ; Axons/metabolism/pathology ; Cell Death ; Diaphragm/innervation ; Embryo Loss ; Embryo, Mammalian/metabolism/pathology ; Exons/genetics ; Female ; Fibroblasts ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Transgenic ; Motor Neurons/*metabolism/*pathology ; Muscular Atrophy, Spinal ; Neuromuscular Diseases/metabolism/pathology ; Oxidative Stress ; RNA Processing, Post-Transcriptional ; RNA, Transfer, Tyr/genetics/*metabolism ; Respiration ; Spinal Nerves/cytology ; Transcription Factors/deficiency/*metabolism ; Tumor Suppressor Protein p53/metabolism ; Tyrosine/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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    Reprogramming in vivo produces teratomas and iPS cells with totipotency features (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-09-13
    Description: Reprogramming of adult cells to generate induced pluripotent stem cells (iPS cells) has opened new therapeutic opportunities; however, little is known about the possibility of in vivo reprogramming within tissues. Here we show that transitory induction of the four factors Oct4, Sox2, Klf4 and c-Myc in mice results in teratomas emerging from multiple organs, implying that full reprogramming can occur in vivo. Analyses of the stomach, intestine, pancreas and kidney reveal groups of dedifferentiated cells that express the pluripotency marker NANOG, indicative of in situ reprogramming. By bone marrow transplantation, we demonstrate that haematopoietic cells can also be reprogrammed in vivo. Notably, reprogrammable mice present circulating iPS cells in the blood and, at the transcriptome level, these in vivo generated iPS cells are closer to embryonic stem cells (ES cells) than standard in vitro generated iPS cells. Moreover, in vivo iPS cells efficiently contribute to the trophectoderm lineage, suggesting that they achieve a more plastic or primitive state than ES cells. Finally, intraperitoneal injection of in vivo iPS cells generates embryo-like structures that express embryonic and extraembryonic markers. We conclude that reprogramming in vivo is feasible and confers totipotency features absent in standard iPS or ES cells. These discoveries could be relevant for future applications of reprogramming in regenerative medicine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abad, Maria -- Mosteiro, Lluc -- Pantoja, Cristina -- Canamero, Marta -- Rayon, Teresa -- Ors, Inmaculada -- Grana, Osvaldo -- Megias, Diego -- Dominguez, Orlando -- Martinez, Dolores -- Manzanares, Miguel -- Ortega, Sagrario -- Serrano, Manuel -- England -- Nature. 2013 Oct 17;502(7471):340-5. doi: 10.1038/nature12586. Epub 2013 Sep 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Tumour Suppression Group, Spanish National Cancer Research Centre (CNIO), Madrid E-28029, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24025773" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blood Cells/cytology/metabolism ; Cell Dedifferentiation ; Cell Separation ; Cells, Cultured ; *Cellular Reprogramming/genetics ; Ectoderm/cytology ; Embryoid Bodies/cytology/metabolism ; Embryonic Stem Cells/cytology/metabolism ; Female ; Fibroblasts/cytology ; Gene Expression Profiling ; Induced Pluripotent Stem Cells/*cytology/metabolism ; Intestines/cytology ; Kidney/cytology ; Kruppel-Like Transcription Factors/genetics/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Octamer Transcription Factor-3/genetics/metabolism ; Organ Specificity ; Pancreas/cytology ; Proto-Oncogene Proteins c-myc/genetics/metabolism ; SOXB1 Transcription Factors/genetics/metabolism ; Stomach/cytology ; Teratoma/genetics/*metabolism/pathology ; Totipotent Stem Cells/*cytology/metabolism ; Transcriptome/genetics ; Trophoblasts/cytology
    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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    T-helper-1-cell cytokines drive cancer into senescence (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-02-05
    Description: Cancer control by adaptive immunity involves a number of defined death and clearance mechanisms. However, efficient inhibition of exponential cancer growth by T cells and interferon-gamma (IFN-gamma) requires additional undefined mechanisms that arrest cancer cell proliferation. Here we show that the combined action of the T-helper-1-cell cytokines IFN-gamma and tumour necrosis factor (TNF) directly induces permanent growth arrest in cancers. To safely separate senescence induced by tumour immunity from oncogene-induced senescence, we used a mouse model in which the Simian virus 40 large T antigen (Tag) expressed under the control of the rat insulin promoter creates tumours by attenuating p53- and Rb-mediated cell cycle control. When combined, IFN-gamma and TNF drive Tag-expressing cancers into senescence by inducing permanent growth arrest in G1/G0, activation of p16INK4a (also known as CDKN2A), and downstream Rb hypophosphorylation at serine 795. This cytokine-induced senescence strictly requires STAT1 and TNFR1 (also known as TNFRSF1A) signalling in addition to p16INK4a. In vivo, Tag-specific T-helper 1 cells permanently arrest Tag-expressing cancers by inducing IFN-gamma- and TNFR1-dependent senescence. Conversely, Tnfr1(-/-)Tag-expressing cancers resist cytokine-induced senescence and grow aggressively, even in TNFR1-expressing hosts. Finally, as IFN-gamma and TNF induce senescence in numerous murine and human cancers, this may be a general mechanism for arresting cancer progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Braumuller, Heidi -- Wieder, Thomas -- Brenner, Ellen -- Assmann, Sonja -- Hahn, Matthias -- Alkhaled, Mohammed -- Schilbach, Karin -- Essmann, Frank -- Kneilling, Manfred -- Griessinger, Christoph -- Ranta, Felicia -- Ullrich, Susanne -- Mocikat, Ralph -- Braungart, Kilian -- Mehra, Tarun -- Fehrenbacher, Birgit -- Berdel, Julia -- Niessner, Heike -- Meier, Friedegund -- van den Broek, Maries -- Haring, Hans-Ulrich -- Handgretinger, Rupert -- Quintanilla-Martinez, Leticia -- Fend, Falko -- Pesic, Marina -- Bauer, Jurgen -- Zender, Lars -- Schaller, Martin -- Schulze-Osthoff, Klaus -- Rocken, Martin -- England -- Nature. 2013 Feb 21;494(7437):361-5. doi: 10.1038/nature11824. Epub 2013 Feb 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Dermatology, Eberhard Karls University, Liebermeister Strasse 25, 72076 Tubingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23376950" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Polyomavirus Transforming/genetics/metabolism ; Cell Aging/*immunology ; Cell Cycle ; Cell Proliferation ; Cyclin-Dependent Kinase Inhibitor p16/deficiency/genetics/metabolism ; Cytokines/*immunology ; Disease Models, Animal ; Disease Progression ; Female ; Humans ; Interferon-gamma/immunology ; Male ; Mice ; Mice, Inbred NOD ; Mice, SCID ; Mice, Transgenic ; Neoplasms/*immunology/*pathology ; Oncogenes/genetics ; Phosphoserine/metabolism ; Receptors, Tumor Necrosis Factor, Type I/metabolism ; Retinoblastoma Protein/chemistry/metabolism ; STAT1 Transcription Factor/metabolism ; Th1 Cells/*immunology ; Time Factors ; Tumor Cells, Cultured ; Tumor Necrosis Factor-alpha/immunology ; Tumor Suppressor Protein p53/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
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    Paneth cells as a site of origin for intestinal inflammation (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-10-04
    Description: The recognition of autophagy related 16-like 1 (ATG16L1) as a genetic risk factor has exposed the critical role of autophagy in Crohn's disease. Homozygosity for the highly prevalent ATG16L1 risk allele, or murine hypomorphic (HM) activity, causes Paneth cell dysfunction. As Atg16l1(HM) mice do not develop spontaneous intestinal inflammation, the mechanism(s) by which ATG16L1 contributes to disease remains obscure. Deletion of the unfolded protein response (UPR) transcription factor X-box binding protein-1 (Xbp1) in intestinal epithelial cells, the human orthologue of which harbours rare inflammatory bowel disease risk variants, results in endoplasmic reticulum (ER) stress, Paneth cell impairment and spontaneous enteritis. Unresolved ER stress is a common feature of inflammatory bowel disease epithelium, and several genetic risk factors of Crohn's disease affect Paneth cells. Here we show that impairment in either UPR (Xbp1(DeltaIEC)) or autophagy function (Atg16l1(DeltaIEC) or Atg7(DeltaIEC)) in intestinal epithelial cells results in each other's compensatory engagement, and severe spontaneous Crohn's-disease-like transmural ileitis if both mechanisms are compromised. Xbp1(DeltaIEC) mice show autophagosome formation in hypomorphic Paneth cells, which is linked to ER stress via protein kinase RNA-like endoplasmic reticulum kinase (PERK), elongation initiation factor 2alpha (eIF2alpha) and activating transcription factor 4 (ATF4). Ileitis is dependent on commensal microbiota and derives from increased intestinal epithelial cell death, inositol requiring enzyme 1alpha (IRE1alpha)-regulated NF-kappaB activation and tumour-necrosis factor signalling, which are synergistically increased when autophagy is deficient. ATG16L1 restrains IRE1alpha activity, and augmentation of autophagy in intestinal epithelial cells ameliorates ER stress-induced intestinal inflammation and eases NF-kappaB overactivation and intestinal epithelial cell death. ER stress, autophagy induction and spontaneous ileitis emerge from Paneth-cell-specific deletion of Xbp1. Genetically and environmentally controlled UPR function within Paneth cells may therefore set the threshold for the development of intestinal inflammation upon hypomorphic ATG16L1 function and implicate ileal Crohn's disease as a specific disorder of Paneth cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3862182/" 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/PMC3862182/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adolph, Timon E -- Tomczak, Michal F -- Niederreiter, Lukas -- Ko, Hyun-Jeong -- Bock, Janne -- Martinez-Naves, Eduardo -- Glickman, Jonathan N -- Tschurtschenthaler, Markus -- Hartwig, John -- Hosomi, Shuhei -- Flak, Magdalena B -- Cusick, Jennifer L -- Kohno, Kenji -- Iwawaki, Takao -- Billmann-Born, Susanne -- Raine, Tim -- Bharti, Richa -- Lucius, Ralph -- Kweon, Mi-Na -- Marciniak, Stefan J -- Choi, Augustine -- Hagen, Susan J -- Schreiber, Stefan -- Rosenstiel, Philip -- Kaser, Arthur -- Blumberg, Richard S -- 100140/Wellcome Trust/United Kingdom -- 260961/European Research Council/International -- DK0034854/DK/NIDDK NIH HHS/ -- DK044319/DK/NIDDK NIH HHS/ -- DK051362/DK/NIDDK NIH HHS/ -- DK053056/DK/NIDDK NIH HHS/ -- DK088199/DK/NIDDK NIH HHS/ -- G1002610/Medical Research Council/United Kingdom -- R01 DK044319/DK/NIDDK NIH HHS/ -- R01 DK051362/DK/NIDDK NIH HHS/ -- R01 DK053056/DK/NIDDK NIH HHS/ -- R01 DK088199/DK/NIDDK NIH HHS/ -- England -- Nature. 2013 Nov 14;503(7475):272-6. doi: 10.1038/nature12599. Epub 2013 Oct 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Division of Gastroenterology and Hepatology, Department of Medicine, Addenbrooke's Hospital, University of Cambridge, Cambridge CB2 0QQ, UK [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24089213" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autophagy/genetics ; Carrier Proteins/genetics/metabolism ; Cell Line ; DNA-Binding Proteins/genetics/metabolism ; Endoplasmic Reticulum Stress/genetics ; Inflammation ; Intestinal Diseases/genetics/*physiopathology ; Intestinal Mucosa/cytology/*pathology ; Mice ; Paneth Cells/*pathology ; Signal Transduction ; Transcription Factors/genetics/metabolism ; Unfolded Protein Response/physiology ; eIF-2 Kinase/metabolism
    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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    Vitamin C induces Tet-dependent DNA demethylation and a blastocyst-like state in ES cells (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-07-03
    Description: DNA methylation is a heritable epigenetic modification involved in gene silencing, imprinting, and the suppression of retrotransposons. Global DNA demethylation occurs in the early embryo and the germ line, and may be mediated by Tet (ten eleven translocation) enzymes, which convert 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC). Tet enzymes have been studied extensively in mouse embryonic stem (ES) cells, which are generally cultured in the absence of vitamin C, a potential cofactor for Fe(II) 2-oxoglutarate dioxygenase enzymes such as Tet enzymes. Here we report that addition of vitamin C to mouse ES cells promotes Tet activity, leading to a rapid and global increase in 5hmC. This is followed by DNA demethylation of many gene promoters and upregulation of demethylated germline genes. Tet1 binding is enriched near the transcription start site of genes affected by vitamin C treatment. Importantly, vitamin C, but not other antioxidants, enhances the activity of recombinant Tet1 in a biochemical assay, and the vitamin-C-induced changes in 5hmC and 5mC are entirely suppressed in Tet1 and Tet2 double knockout ES cells. Vitamin C has a stronger effect on regions that gain methylation in cultured ES cells compared to blastocysts, and in vivo are methylated only after implantation. In contrast, imprinted regions and intracisternal A particle retroelements, which are resistant to demethylation in the early embryo, are resistant to vitamin-C-induced DNA demethylation. Collectively, the results of this study establish vitamin C as a direct regulator of Tet activity and DNA methylation fidelity in ES cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3893718/" 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/PMC3893718/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blaschke, Kathryn -- Ebata, Kevin T -- Karimi, Mohammad M -- Zepeda-Martinez, Jorge A -- Goyal, Preeti -- Mahapatra, Sahasransu -- Tam, Angela -- Laird, Diana J -- Hirst, Martin -- Rao, Anjana -- Lorincz, Matthew C -- Ramalho-Santos, Miguel -- 92093/Canadian Institutes of Health Research/Canada -- CA151535/CA/NCI NIH HHS/ -- DP2 OD007420/OD/NIH HHS/ -- DP2OD004698/OD/NIH HHS/ -- HD065812/HD/NICHD NIH HHS/ -- P30 DK063720/DK/NIDDK NIH HHS/ -- R01 AI044432/AI/NIAID NIH HHS/ -- R01 CA151535/CA/NCI NIH HHS/ -- R01 HD065812/HD/NICHD NIH HHS/ -- R01 OD012204/OD/NIH HHS/ -- England -- Nature. 2013 Aug 8;500(7461):222-6. doi: 10.1038/nature12362. Epub 2013 Jun 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Obstetrics and Gynecology and Center for Reproductive Sciences, University of California San Francisco, San Francisco, California 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23812591" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antioxidants/pharmacology ; Ascorbic Acid/*pharmacology ; Blastocyst/metabolism ; Cell Line ; Culture Media/chemistry ; Cytosine/analogs & derivatives/metabolism ; DNA Methylation/*drug effects ; DNA-Binding Proteins/genetics/*metabolism ; Embryonic Stem Cells/*drug effects/metabolism ; Gene Expression Regulation, Developmental/drug effects ; Gene Knockout Techniques ; Mice ; Protein Binding/drug effects ; Proto-Oncogene Proteins/genetics/*metabolism ; Recombinant Proteins/genetics/metabolism
    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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    A mitochondrial genome sequence of a hominin from Sima de los Huesos (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-12-07
    Description: Excavations of a complex of caves in the Sierra de Atapuerca in northern Spain have unearthed hominin fossils that range in age from the early Pleistocene to the Holocene. One of these sites, the 'Sima de los Huesos' ('pit of bones'), has yielded the world's largest assemblage of Middle Pleistocene hominin fossils, consisting of at least 28 individuals dated to over 300,000 years ago. The skeletal remains share a number of morphological features with fossils classified as Homo heidelbergensis and also display distinct Neanderthal-derived traits. Here we determine an almost complete mitochondrial genome sequence of a hominin from Sima de los Huesos and show that it is closely related to the lineage leading to mitochondrial genomes of Denisovans, an eastern Eurasian sister group to Neanderthals. Our results pave the way for DNA research on hominins from the Middle Pleistocene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, Matthias -- Fu, Qiaomei -- Aximu-Petri, Ayinuer -- Glocke, Isabelle -- Nickel, Birgit -- Arsuaga, Juan-Luis -- Martinez, Ignacio -- Gracia, Ana -- de Castro, Jose Maria Bermudez -- Carbonell, Eudald -- Paabo, Svante -- England -- Nature. 2014 Jan 16;505(7483):403-6. doi: 10.1038/nature12788. Epub 2013 Dec 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany. ; 1] Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany [2] Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China. ; 1] Centro de Investigacion Sobre la Evolucion y Comportamiento Humanos, Universidad Complutense de Madrid-Instituto de Salud Carlos III, 28029 Madrid, Spain [2] Departamento de Paleontologia, Facultad de Ciencias Geologicas, Universidad Complutense de Madrid, 28040 Madrid, Spain. ; 1] Centro de Investigacion Sobre la Evolucion y Comportamiento Humanos, Universidad Complutense de Madrid-Instituto de Salud Carlos III, 28029 Madrid, Spain [2] Area de Paleontologia, Depto. de Geografia y Geologia, Universidad de Alcala, Alcala de Henares, 28871 Madrid, Spain. ; Centro Nacional de Investigacion sobre la Evolucion Humana, Paseo Sierra de Atapuerca, 09002 Burgos, Spain. ; 1] Institut Catala de Paleoecologia Humana i Evolucio Social, C/Marcel.li Domingo s/n (Edifici W3), Campus Sescelades, 43007 Tarragona, Spain [2] Area de Prehistoria, Dept. d'Historia i Historia de l'Art, Univ. Rovira i Virgili, Fac. de Lletres, Av. Catalunya, 35, 43002 Tarragona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24305051" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bayes Theorem ; Consensus Sequence/genetics ; Cytosine/metabolism ; DNA, Mitochondrial/genetics ; Deamination ; Femur/anatomy & histology/metabolism ; *Fossils ; Genome, Mitochondrial/*genetics ; Hominidae/anatomy & histology/*classification/*genetics ; Molecular Sequence Data ; Neanderthals/genetics ; *Phylogeny ; Spain
    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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    Great ape genetic diversity and population history (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-07-05
    Description: Most great ape genetic variation remains uncharacterized; however, its study is critical for understanding population history, recombination, selection and susceptibility to disease. Here we sequence to high coverage a total of 79 wild- and captive-born individuals representing all six great ape species and seven subspecies and report 88.8 million single nucleotide polymorphisms. Our analysis provides support for genetically distinct populations within each species, signals of gene flow, and the split of common chimpanzees into two distinct groups: Nigeria-Cameroon/western and central/eastern populations. We find extensive inbreeding in almost all wild populations, with eastern gorillas being the most extreme. Inferred effective population sizes have varied radically over time in different lineages and this appears to have a profound effect on the genetic diversity at, or close to, genes in almost all species. We discover and assign 1,982 loss-of-function variants throughout the human and great ape lineages, determining that the rate of gene loss has not been different in the human branch compared to other internal branches in the great ape phylogeny. This comprehensive catalogue of great ape genome diversity provides a framework for understanding evolution and a resource for more effective management of wild and captive great ape populations.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3822165/" 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/PMC3822165/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Prado-Martinez, Javier -- Sudmant, Peter H -- Kidd, Jeffrey M -- Li, Heng -- Kelley, Joanna L -- Lorente-Galdos, Belen -- Veeramah, Krishna R -- Woerner, August E -- O'Connor, Timothy D -- Santpere, Gabriel -- Cagan, Alexander -- Theunert, Christoph -- Casals, Ferran -- Laayouni, Hafid -- Munch, Kasper -- Hobolth, Asger -- Halager, Anders E -- Malig, Maika -- Hernandez-Rodriguez, Jessica -- Hernando-Herraez, Irene -- Prufer, Kay -- Pybus, Marc -- Johnstone, Laurel -- Lachmann, Michael -- Alkan, Can -- Twigg, Dorina -- Petit, Natalia -- Baker, Carl -- Hormozdiari, Fereydoun -- Fernandez-Callejo, Marcos -- Dabad, Marc -- Wilson, Michael L -- Stevison, Laurie -- Camprubi, Cristina -- Carvalho, Tiago -- Ruiz-Herrera, Aurora -- Vives, Laura -- Mele, Marta -- Abello, Teresa -- Kondova, Ivanela -- Bontrop, Ronald E -- Pusey, Anne -- Lankester, Felix -- Kiyang, John A -- Bergl, Richard A -- Lonsdorf, Elizabeth -- Myers, Simon -- Ventura, Mario -- Gagneux, Pascal -- Comas, David -- Siegismund, Hans -- Blanc, Julie -- Agueda-Calpena, Lidia -- Gut, Marta -- Fulton, Lucinda -- Tishkoff, Sarah A -- Mullikin, James C -- Wilson, Richard K -- Gut, Ivo G -- Gonder, Mary Katherine -- Ryder, Oliver A -- Hahn, Beatrice H -- Navarro, Arcadi -- Akey, Joshua M -- Bertranpetit, Jaume -- Reich, David -- Mailund, Thomas -- Schierup, Mikkel H -- Hvilsom, Christina -- Andres, Aida M -- Wall, Jeffrey D -- Bustamante, Carlos D -- Hammer, Michael F -- Eichler, Evan E -- Marques-Bonet, Tomas -- 090532/Wellcome Trust/United Kingdom -- 260372/European Research Council/International -- DP1 ES022577/ES/NIEHS NIH HHS/ -- DP1ES022577-04/DP/NCCDPHP CDC HHS/ -- GM100233/GM/NIGMS NIH HHS/ -- HG002385/HG/NHGRI NIH HHS/ -- R01 GM095882/GM/NIGMS NIH HHS/ -- R01 GM100233/GM/NIGMS NIH HHS/ -- R01 HG002385/HG/NHGRI NIH HHS/ -- R01_HG005226/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Jul 25;499(7459):471-5. doi: 10.1038/nature12228. Epub 2013 Jul 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Biologia Evolutiva, CSIC-Universitat Pompeu Fabra, PRBB, Doctor Aiguader 88, Barcelona, Catalonia 08003, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23823723" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Animals ; Animals, Wild/genetics ; Animals, Zoo/genetics ; Asia, Southeastern ; Evolution, Molecular ; Gene Flow/genetics ; *Genetic Variation ; Genetics, Population ; Genome/genetics ; Gorilla gorilla/classification/genetics ; Hominidae/classification/*genetics ; Humans ; Inbreeding ; Pan paniscus/classification/genetics ; Pan troglodytes/classification/genetics ; Phylogeny ; Polymorphism, Single Nucleotide/genetics ; Population Density
    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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    Five-vertebrate ChIP-seq reveals the evolutionary dynamics of transcription factor binding (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-04-10
    Description: Transcription factors (TFs) direct gene expression by binding to DNA regulatory regions. To explore the evolution of gene regulation, we used chromatin immunoprecipitation with high-throughput sequencing (ChIP-seq) to determine experimentally the genome-wide occupancy of two TFs, CCAAT/enhancer-binding protein alpha and hepatocyte nuclear factor 4 alpha, in the livers of five vertebrates. Although each TF displays highly conserved DNA binding preferences, most binding is species-specific, and aligned binding events present in all five species are rare. Regions near genes with expression levels that are dependent on a TF are often bound by the TF in multiple species yet show no enhanced DNA sequence constraint. Binding divergence between species can be largely explained by sequence changes to the bound motifs. Among the binding events lost in one lineage, only half are recovered by another binding event within 10 kilobases. Our results reveal large interspecies differences in transcriptional regulation and provide insight into regulatory evolution.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3008766/" 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/PMC3008766/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmidt, Dominic -- Wilson, Michael D -- Ballester, Benoit -- Schwalie, Petra C -- Brown, Gordon D -- Marshall, Aileen -- Kutter, Claudia -- Watt, Stephen -- Martinez-Jimenez, Celia P -- Mackay, Sarah -- Talianidis, Iannis -- Flicek, Paul -- Odom, Duncan T -- 062023/Wellcome Trust/United Kingdom -- 079643/Wellcome Trust/United Kingdom -- 15603/Cancer Research UK/United Kingdom -- 202218/European Research Council/International -- A15603/Cancer Research UK/United Kingdom -- WT062023/Wellcome Trust/United Kingdom -- WT079643/Wellcome Trust/United Kingdom -- Cancer Research UK/United Kingdom -- New York, N.Y. -- Science. 2010 May 21;328(5981):1036-40. doi: 10.1126/science.1186176. Epub 2010 Apr 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20378774" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; Base Sequence ; Binding Sites ; Biological Evolution ; CCAAT-Enhancer-Binding Protein-alpha/*metabolism ; Chickens/genetics ; Chromatin Immunoprecipitation ; DNA/genetics/metabolism ; Dogs ; *Evolution, Molecular ; *Gene Expression Regulation ; *Genome ; Genome, Human ; Hepatocyte Nuclear Factor 4/*metabolism ; Humans ; Liver/*metabolism ; Mice ; Opossums/genetics ; Protein Binding ; Regulatory Sequences, Nucleic Acid ; Sequence Analysis, DNA ; Species Specificity ; Vertebrates/*genetics/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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