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  • Animals  (485)
  • Aerospace Medicine
  • American Association for the Advancement of Science (AAAS)  (485)
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  • 11
    Publication Date: 2002-04-06
    Description: Higher order chromatin structure presents a barrier to the recognition and repair of DNA damage. Double-strand breaks (DSBs) induce histone H2AX phosphorylation, which is associated with the recruitment of repair factors to damaged DNA. To help clarify the physiological role of H2AX, we targeted H2AX in mice. Although H2AX is not essential for irradiation-induced cell-cycle checkpoints, H2AX-/- mice were radiation sensitive, growth retarded, and immune deficient, and mutant males were infertile. These pleiotropic phenotypes were associated with chromosomal instability, repair defects, and impaired recruitment of Nbs1, 53bp1, and Brca1, but not Rad51, to irradiation-induced foci. Thus, H2AX is critical for facilitating the assembly of specific DNA-repair complexes on damaged DNA.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4721576/" 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/PMC4721576/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Celeste, Arkady -- Petersen, Simone -- Romanienko, Peter J -- Fernandez-Capetillo, Oscar -- Chen, Hua Tang -- Sedelnikova, Olga A -- Reina-San-Martin, Bernardo -- Coppola, Vincenzo -- Meffre, Eric -- Difilippantonio, Michael J -- Redon, Christophe -- Pilch, Duane R -- Olaru, Alexandru -- Eckhaus, Michael -- Camerini-Otero, R Daniel -- Tessarollo, Lino -- Livak, Ferenc -- Manova, Katia -- Bonner, William M -- Nussenzweig, Michel C -- Nussenzweig, Andre -- Z99 CA999999/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2002 May 3;296(5569):922-7. Epub 2002 Apr 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Immunology Branch, National Cancer Institute, NIH, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11934988" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Lymphocytes/immunology/physiology ; Base Sequence ; Cell Aging ; Cell Cycle ; Cells, Cultured ; *Chromosome Aberrations ; DNA Damage ; *DNA Repair ; Female ; Gene Targeting ; Histones/chemistry/*genetics/*physiology ; Immunoglobulin Class Switching ; Infertility, Male/genetics/physiopathology ; Lymphocyte Count ; Male ; Meiosis ; Mice ; Mice, Knockout ; Molecular Sequence Data ; Mutation ; Phosphorylation ; *Recombination, Genetic ; Spermatocytes/physiology ; T-Lymphocytes/immunology/physiology
    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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  • 12
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1998-11-13
    Description: Human reovirus requires an activated Ras signaling pathway for infection of cultured cells. To investigate whether this property can be exploited for cancer therapy, severe combined immune deficient mice bearing tumors established from v-erbB-transformed murine NIH 3T3 cells or human U87 glioblastoma cells were treated with the virus. A single intratumoral injection of virus resulted in regression of tumors in 65 to 80 percent of the mice. Treatment of immune-competent C3H mice bearing tumors established from ras-transformed C3H-10T1/2 cells also resulted in tumor regression, although a series of injections were required. These results suggest that, with further work, reovirus may have applicability in the treatment of cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coffey, M C -- Strong, J E -- Forsyth, P A -- Lee, P W -- New York, N.Y. -- Science. 1998 Nov 13;282(5392):1332-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Biology Research Group and Department of Microbiology and Infectious Diseases, University of Calgary Health Science Centre, Calgary, Alberta, T2N 4N1, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9812900" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; Antibodies, Viral/immunology ; Calcium-Calmodulin-Dependent Protein Kinases/metabolism ; Cell Line, Transformed ; Genes, erbB ; *Genes, ras ; Humans ; Male ; Mammalian orthoreovirus 3/immunology/*physiology ; Mice ; Mice, Inbred C3H ; Mice, SCID ; Neoplasm Transplantation ; Neoplasms, Experimental/metabolism/pathology/*therapy/virology ; Signal Transduction ; Tumor Cells, Cultured ; Virus Replication ; ras Proteins/*metabolism
    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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  • 13
    Publication Date: 2002-10-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meegaskumbura, M -- Bossuyt, F -- Pethiyagoda, R -- Manamendra-Arachchi, K -- Bahir, M -- Milinkovitch, M C -- Schneider, C J -- New York, N.Y. -- Science. 2002 Oct 11;298(5592):379.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biology Department, Boston University, Boston, MA 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12376694" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anura/anatomy & histology/*classification/genetics/physiology ; Base Sequence ; Biological Evolution ; DNA, Mitochondrial/genetics ; *Ecosystem ; Embryonic Development ; Female ; Male ; Molecular Sequence Data ; Oviposition ; Ovum/physiology ; *Phylogeny ; Sri Lanka ; Trees
    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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  • 14
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2002-05-04
    Description: Neurons seem to have at least two self-destruct programs. Like other cell types, they have an intracellular death program for undergoing apoptosis when they are injured, infected, or not needed. In addition, they apparently have a second, molecularly distinct self-destruct program in their axon. This program is activated when the axon is severed and leads to the rapid degeneration of the isolated part of the cut axon. Do neurons also use this second program to prune their axonal tree during development and to conserve resources in response to chronic insults?〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Raff, Martin C -- Whitmore, Alan V -- Finn, John T -- New York, N.Y. -- Science. 2002 May 3;296(5569):868-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Laboratory for Molecular Cell Biology and Cell Biology Unit and the Biology Department, University College London, London WC1E 6BT, UK. m.raff@ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11988563" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Axons/*physiology ; Humans ; Mice ; Mice, Mutant Strains ; Motor Neuron Disease/pathology/physiopathology ; *Nerve Degeneration ; Neurodegenerative Diseases/pathology/*physiopathology ; Peripheral Nervous System Diseases/pathology/physiopathology ; *Wallerian Degeneration/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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  • 15
    Publication Date: 1998-09-11
    Description: Hypertrophic cardiomyopathy (HCM) is an inherited form of heart disease that affects 1 in 500 individuals. Here it is shown that calcineurin, a calcium-regulated phosphatase, plays a critical role in the pathogenesis of HCM. Administration of the calcineurin inhibitors cyclosporin and FK506 prevented disease in mice that were genetically predisposed to develop HCM as a result of aberrant expression of tropomodulin, myosin light chain-2, or fetal beta-tropomyosin in the heart. Cyclosporin had a similar effect in a rat model of pressure-overload hypertrophy. These results suggest that calcineurin inhibitors merit investigation as potential therapeutics for certain forms of human heart disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sussman, M A -- Lim, H W -- Gude, N -- Taigen, T -- Olson, E N -- Robbins, J -- Colbert, M C -- Gualberto, A -- Wieczorek, D F -- Molkentin, J D -- HL58224-01/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1998 Sep 11;281(5383):1690-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Cardiovascular Biology, Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9733519" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcineurin/metabolism ; *Calcineurin Inhibitors ; Calcium/metabolism ; *Cardiac Myosins ; Cardiomegaly/metabolism/pathology/*prevention & control ; Cardiomyopathy, Dilated/pathology/*prevention & control ; Cardiomyopathy, Hypertrophic/genetics/metabolism/pathology/*prevention & control ; Carrier Proteins/genetics ; Cyclosporine/*pharmacology ; Female ; Mice ; Mice, Transgenic ; *Microfilament Proteins ; Models, Cardiovascular ; Myocardium/*metabolism/pathology ; Myosin Light Chains/genetics/metabolism ; Rats ; Signal Transduction ; Tacrolimus/*pharmacology ; Tropomodulin ; Tropomyosin/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
    Publication Date: 2000-02-05
    Description: The dynamics of multiple Plasmodium infections in asymptomatic children living under intense malaria transmission pressure provide evidence for a density-dependent regulation that transcends species as well as genotype. This regulation, in combination with species- and genotype-specific immune responses, results in nonindependent, sequential episodes of infection with each species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bruce, M C -- Donnelly, C A -- Alpers, M P -- Galinski, M R -- Barnwell, J W -- Walliker, D -- Day, K P -- AI24710/AI/NIAID NIH HHS/ -- AI37545/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2000 Feb 4;287(5454):845-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Centre for the Epidemiology of Infectious Disease, Department of Zoology, University of Oxford, Oxford, OX1 3FY, UK. marian.bruce@ceid.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10657296" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Animals ; Child ; Child, Preschool ; Female ; Genotype ; Humans ; Malaria/immunology/*parasitology ; Malaria Vaccines ; Male ; Papua New Guinea ; Parasitemia/*parasitology ; Plasmodium/genetics/*physiology ; Plasmodium falciparum/physiology ; Plasmodium malariae/physiology ; Plasmodium vivax/physiology ; Species Specificity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
    Publication Date: 2000-12-02
    Description: Many apoptotic molecules relocate subcellularly in cells undergoing apoptosis. The pro-apoptotic protein BID underwent posttranslational (rather than classic cotranslational) N-myristoylation when cleavage by caspase 8 caused exposure of a glycine residue. N-myristoylation enabled the targeting of a complex of p7 and myristoylated p15 fragments of BID to artificial membranes bearing the lipid composition of mitochondria, as well as to intact mitochondria. This post-proteolytic N-myristoylation serves as an activating switch, enhancing BID-induced release of cytochrome c and cell death.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zha, J -- Weiler, S -- Oh, K J -- Wei, M C -- Korsmeyer, S J -- CA50239-13/CA/NCI NIH HHS/ -- K01 CA82231/CA/NCI NIH HHS/ -- T32 CA72320-01A1/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2000 Dec 1;290(5497):1761-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Dana-Farber Cancer Institute, Departments of Pathology and Medicine, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11099414" target="_blank"〉PubMed〈/a〉
    Keywords: Acyltransferases/genetics/metabolism ; Animals ; *Apoptosis ; BH3 Interacting Domain Death Agonist Protein ; Carrier Proteins/chemistry/*metabolism ; Caspase 8 ; Caspase 9 ; Caspases/metabolism ; Cytochrome c Group/metabolism ; Humans ; Intracellular Membranes/*metabolism ; Jurkat Cells ; Liposomes/metabolism ; Mice ; Mitochondria/*metabolism ; Myristic Acid/*metabolism ; Peptide Fragments/metabolism ; Protein Conformation ; Protein Processing, Post-Translational ; Protein Structure, Tertiary ; Protein Transport ; Recombinant Fusion Proteins/metabolism
    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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  • 18
    Publication Date: 2001-11-27
    Description: Global patterns of human DNA sequence variation (haplotypes) defined by common single nucleotide polymorphisms (SNPs) have important implications for identifying disease associations and human traits. We have used high-density oligonucleotide arrays, in combination with somatic cell genetics, to identify a large fraction of all common human chromosome 21 SNPs and to directly observe the haplotype structure defined by these SNPs. This structure reveals blocks of limited haplotype diversity in which more than 80% of a global human sample can typically be characterized by only three common haplotypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Patil, N -- Berno, A J -- Hinds, D A -- Barrett, W A -- Doshi, J M -- Hacker, C R -- Kautzer, C R -- Lee, D H -- Marjoribanks, C -- McDonough, D P -- Nguyen, B T -- Norris, M C -- Sheehan, J B -- Shen, N -- Stern, D -- Stokowski, R P -- Thomas, D J -- Trulson, M O -- Vyas, K R -- Frazer, K A -- Fodor, S P -- Cox, D R -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1719-23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Perlegen Sciences, Inc., 2021 Stierlin Court, Mountain View, CA 94043, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721056" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Alleles ; Animals ; Chromosomes, Human, Pair 21/*genetics ; Continental Population Groups/genetics ; Ethnic Groups/genetics ; Gene Frequency/genetics ; Genetic Variation/genetics ; Genome, Human ; Haplotypes/*genetics ; Humans ; Hybrid Cells/metabolism ; Mutation/genetics ; Oligonucleotide Array Sequence Analysis/*methods ; Polymorphism, Single Nucleotide/*genetics ; Random Allocation ; Sensitivity and Specificity
    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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  • 19
    Publication Date: 2001-02-27
    Description: Receptor editing, clonal deletion, and anergy are the mechanisms by which B cells maintain tolerance to self antigens. To determine the extent to which receptor editing shapes the normal antibody repertoire, we generated an immunoglobulin kappa polymorphism that facilitates the detection of editing of immunoglobulin light chains in vivo. We found that B cells are targeted for editing during a 2-hour delay in development at the pre-BII cell stage, and that about 25% of all antibody molecules are produced by gene replacement. These results suggest that receptor editing represents a major force in shaping the antibody repertoire.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Casellas, R -- Shih, T A -- Kleinewietfeld, M -- Rakonjac, J -- Nemazee, D -- Rajewsky, K -- Nussenzweig, M C -- 33890/PHS HHS/ -- R01 AI033608/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Feb 23;291(5508):1541-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunology, Howard Hughes Medical Institute, Rockefeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11222858" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Affinity ; B-Lymphocytes/*immunology/metabolism ; Binding Sites, Antibody ; DNA-Binding Proteins/genetics/metabolism ; *Gene Rearrangement, B-Lymphocyte, Light Chain ; Genes, Immunoglobulin ; Hematopoietic Stem Cells/cytology/immunology ; Humans ; Immunoglobulin Constant Regions/genetics ; Immunoglobulin Heavy Chains/genetics ; Immunoglobulin kappa-Chains/genetics/immunology ; Mice ; Mice, Transgenic ; Models, Immunological ; Nuclear Proteins ; Receptors, Antigen, B-Cell/*genetics/*immunology ; Recombination, Genetic ; *Self Tolerance
    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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  • 20
    Publication Date: 2000-03-10
    Description: The first artery and vein of the vertebrate embryo assemble in the trunk by migration and coalescence of angioblasts to form endothelial tubes. The gridlock (grl) mutation in zebrafish selectively perturbs assembly of the artery (the aorta). Here it is shown that grl encodes a basic helix-loop-helix (bHLH) protein belonging to the Hairy/Enhancer of the split family of bHLH proteins. The grl gene is expressed in lateral plate mesoderm before vessel formation, and thereafter in the aorta and not in the vein. These results suggest that the arterial endothelial identity is established even before the onset of blood flow and implicate the grl gene in assignment of vessel-specific cell fate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhong, T P -- Rosenberg, M -- Mohideen, M A -- Weinstein, B -- Fishman, M C -- R01DK55383/DK/NIDDK NIH HHS/ -- R01RR0888/RR/NCRR NIH HHS/ -- T32HL07208/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 2000 Mar 10;287(5459):1820-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cardiovascular Research Center, Massachusetts General Hospital-Harvard Medical School, 149 13th Street, 4th floor, Charlestown, MA 02129, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10710309" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Aorta/*embryology/metabolism ; Basic Helix-Loop-Helix Transcription Factors ; Cloning, Molecular ; Embryo, Nonmammalian/metabolism ; Embryonic Development ; Endothelium, Vascular/embryology/metabolism ; Gene Expression ; Genotype ; *Helix-Loop-Helix Motifs ; Humans ; Mesoderm/metabolism ; Molecular Sequence Data ; Morphogenesis/genetics ; Mutation ; Phenotype ; Physical Chromosome Mapping ; Proteins/chemistry/*genetics/*physiology ; Sequence Alignment ; Stem Cells/cytology/metabolism ; Zebrafish/embryology/*genetics ; *Zebrafish Proteins
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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