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  • 1
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    A gene-coexpression network for global discovery of conserved genetic modules (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-08-23
    Description: To elucidate gene function on a global scale, we identified pairs of genes that are coexpressed over 3182 DNA microarrays from humans, flies, worms, and yeast. We found 22,163 such coexpression relationships, each of which has been conserved across evolution. This conservation implies that the coexpression of these gene pairs confers a selective advantage and therefore that these genes are functionally related. Many of these relationships provide strong evidence for the involvement of new genes in core biological functions such as the cell cycle, secretion, and protein expression. We experimentally confirmed the predictions implied by some of these links and identified cell proliferation functions for several genes. By assembling these links into a gene-coexpression network, we found several components that were animal-specific as well as interrelationships between newly evolved and ancient modules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stuart, Joshua M -- Segal, Eran -- Koller, Daphne -- Kim, Stuart K -- New York, N.Y. -- Science. 2003 Oct 10;302(5643):249-55. Epub 2003 Aug 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stanford Medical Informatics, 251 Campus Drive, Medical School Office Building X-215, Stanford, CA 94305-5329, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12934013" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Caenorhabditis elegans/genetics ; Cell Cycle/genetics ; Cell Division/genetics ; Computational Biology ; Conserved Sequence ; Databases, Genetic ; Drosophila melanogaster/genetics ; *Gene Expression ; Gene Expression Profiling ; Gene Expression Regulation ; Genes, Fungal ; Genes, Helminth ; Genes, Insect ; Humans ; Models, Statistical ; Mutation ; *Oligonucleotide Array Sequence Analysis ; Proteins/metabolism ; Saccharomyces cerevisiae/genetics ; Signal Transduction/genetics ; Species Specificity ; Tumor Cells, Cultured
    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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  • 2
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    Reading the worm genome (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-01-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, S K -- New York, N.Y. -- Science. 2000 Jan 7;287(5450):52-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology and Genetics, Stanford University Medical Center, Stanford, CA 94305-5329, USA. kim@cmgm.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10644223" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/*genetics/growth & development/*metabolism ; *Caenorhabditis elegans Proteins ; Female ; Genes, Helminth ; *Genome ; Helminth Proteins/genetics/*metabolism ; Protein Binding ; Repressor Proteins/genetics/metabolism ; Retinoblastoma Protein/metabolism ; Signal Transduction ; *Two-Hybrid System Techniques ; Vulva/growth & development ; Yeasts/genetics
    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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  • 3
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    A gene expression map for Caenorhabditis elegans (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-09-15
    Description: We have assembled data from Caenorhabditis elegans DNA microarray experiments involving many growth conditions, developmental stages, and varieties of mutants. Co-regulated genes were grouped together and visualized in a three-dimensional expression map that displays correlations of gene expression profiles as distances in two dimensions and gene density in the third dimension. The gene expression map can be used as a gene discovery tool to identify genes that are co-regulated with known sets of genes (such as heat shock, growth control genes, germ line genes, and so forth) or to uncover previously unknown genetic functions (such as genomic instability in males and sperm caused by specific transposons).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, S K -- Lund, J -- Kiraly, M -- Duke, K -- Jiang, M -- Stuart, J M -- Eizinger, A -- Wylie, B N -- Davidson, G S -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2087-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology and Genetics, Stanford University Medical School, Stanford, CA 94305, USA. kim@cmgm.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11557892" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; Caenorhabditis elegans/*genetics/physiology ; *Computational Biology ; DNA Transposable Elements ; DNA, Complementary ; Databases, Factual ; Female ; *Gene Expression ; *Gene Expression Profiling ; Gene Expression Regulation ; *Genes, Helminth ; Genome ; *Genomics ; Helminth Proteins/biosynthesis/genetics ; Intestines/physiology ; Male ; Muscles/physiology ; Neurons/physiology ; Nucleic Acid Hybridization ; Oligonucleotide Array Sequence Analysis ; Oocytes/physiology ; RNA, Helminth/genetics ; Software ; Spermatozoa/physiology
    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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  • 4
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    Ablation of insulin-producing neurons in flies: growth and diabetic phenotypes (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-11
    Description: In the fruit fly Drosophila, four insulin genes are coexpressed in small clusters of cells [insulin-producing cells (IPCs)] in the brain. Here, we show that ablation of these IPCs causes developmental delay, growth retardation, and elevated carbohydrate levels in larval hemolymph. All of the defects were reversed by ectopic expression of a Drosophila insulin transgene. On the basis of these functional data and the observation that IPCs release insulin into the circulatory system, we conclude that brain IPCs are the main systemic supply of insulin during larval growth. We propose that IPCs and pancreatic islet beta cells are functionally analogous and may have evolved from a common ancestral insulin-producing neuron. Interestingly, the phenotype of flies lacking IPCs includes certain features of diabetes mellitus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rulifson, Eric J -- Kim, Seung K -- Nusse, Roel -- New York, N.Y. -- Science. 2002 May 10;296(5570):1118-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Beckman Center B300, Stanford University, Stanford, CA 94305-5329, USA. rulifson@cmgm.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12004130" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; Blood Glucose/*metabolism ; Brain/cytology ; Cell Count ; Cell Size ; Diabetes Mellitus ; Drosophila/anatomy & histology/genetics/growth & development/*physiology ; Drosophila Proteins/genetics/*metabolism ; Gene Expression ; Heart/innervation ; Hemolymph ; Insect Hormones/genetics/metabolism ; Insulin/genetics/*metabolism ; Larva/growth & development ; Myocardium/metabolism ; Neurons/*metabolism ; Neurosecretory Systems/cytology/metabolism ; Oligopeptides/genetics/metabolism ; Phenotype ; Pyrrolidonecarboxylic Acid/analogs & derivatives ; RNA, Messenger/genetics/metabolism ; Transgenes ; Trehalose/*blood ; Wings, Animal/anatomy & histology/cytology/growth & development
    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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  • 5
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    Atomic coherence changes caused by optical pumping applied to electromagnetically induced absorption (2003)
    Institute of Physics
    Details
    Publication Date: 2003-08-26
    Print ISSN: 0953-4075
    Electronic ISSN: 1361-6455
    Topics: Physics
    Published by Institute of Physics
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  • 6
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    An investigation on airflow in disordered nasal cavity and its corrected models by tomographic PIV (2004)
    Institute of Physics
    Details
    Publication Date: 2004-05-14
    Print ISSN: 0957-0233
    Electronic ISSN: 1361-6501
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Published by Institute of Physics
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  • 7
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    Effects of Striga hermonthica on yield components in maize (2000)
    Cambridge University Press
    Details
    Publication Date: 2000-09-01
    Description: A split-plot experiment was conducted in 1992 and 1993 at Mokwa in the southern Guinea savanna zone of Nigeria to determine the responses of maize yield components to infestation by parasitic weed Striga hermonthica (Del.) Benth. and identify the most important yield components under Striga parasitism. Infestation treatments (infested v. non-infested) and hybrids [9022-13 (highly tolerant), 8644-31 (moderately tolerant), 8321-21 (moderately susceptible) and 8338-1 (highly susceptible)] were the main and subplots, respectively.Striga significantly reduced grain yield and all the yield components considered. Pre-flowering stress due to Striga parasitism was higher than post-flowering stress and resulted in higher reduction for ears per plant (44%) than reductions for other yield components (12–29%). The numbers of yield components for which the hybrids exhibited the highest percentage reduction increased with the degree of susceptibility to Striga. Thus, 8338-1, the highly susceptible hybrid, suffered more severe reductions in a larger number of yield components than the other hybrids. Number of ears per plant was a major yield component and accounted for an overwhelming proportion (R2 = 0·95) of the variation in grain yield under Striga. Reductions in maize grain yield and its components were more severe under the moisture stress that occurred in 1992.
    Print ISSN: 0021-8596
    Electronic ISSN: 1469-5146
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Cambridge University Press
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