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  • 1
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    Systemic RNAi in C. elegans requires the putative transmembrane protein SID-1 (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-09
    Description: Double-stranded RNA-mediated gene interference (RNAi) in Caenorhabditis elegans systemically inhibits gene expression throughout the organism. To investigate how gene-specific silencing information is transmitted between cells, we constructed a strain that permits visualization of systemic RNAi. We used this strain to identify systemic RNA interference-deficient (sid) loci required to spread gene-silencing information between tissues but not to initiate or maintain an RNAi response. One of these loci, sid-1, encodes a conserved protein with predicted transmembrane domains. SID-1 is expressed in cells sensitive to RNAi, is localized to the cell periphery, and is required cell-autonomously for systemic RNAi.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winston, William M -- Molodowitch, Christina -- Hunter, Craig P -- New York, N.Y. -- Science. 2002 Mar 29;295(5564):2456-9. Epub 2002 Feb 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11834782" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Genetically Modified ; Caenorhabditis elegans/embryology/*genetics/metabolism ; Caenorhabditis elegans Proteins/chemistry/*genetics/*physiology ; Calmodulin-Binding Proteins/genetics ; Cytoplasm/metabolism ; Embryo, Nonmammalian/physiology ; *Gene Silencing ; Genes, Helminth ; Germ Cells/metabolism ; Green Fluorescent Proteins ; Intestines/metabolism ; Luminescent Proteins/genetics ; Membrane Proteins/chemistry/*genetics/*physiology ; Molecular Sequence Data ; Mosaicism ; Muscle Proteins/genetics ; Muscles/metabolism ; Mutation ; Protein Structure, Tertiary ; RNA, Double-Stranded/*genetics/metabolism ; RNA, Helminth/*genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; Transgenes
    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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    Genomic analysis of gene expression in C. elegans (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-29
    Description: Until now, genome-wide transcriptional profiling has been limited to single-cell organisms. The nematode Caenorhabditis elegans is a well-characterized metazoan in which the expression of all genes can be monitored by oligonucleotide arrays. We used such arrays to quantitate the expression of C. elegans genes throughout the development of this organism. The results provide an estimate of the number of expressed genes in the nematode, reveal relations between gene function and gene expression that can guide analysis of uncharacterized worm genes, and demonstrate a shift in expression from evolutionarily conserved genes to worm-specific genes over the course of development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hill, A A -- Hunter, C P -- Tsung, B T -- Tucker-Kellogg, G -- Brown, E L -- New York, N.Y. -- Science. 2000 Oct 27;290(5492):809-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genomics, Genetics Institute, Cambridge, MA 02140, USA. ahill@genetics.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11052945" target="_blank"〉PubMed〈/a〉
    Keywords: Analysis of Variance ; Animals ; Caenorhabditis elegans/*genetics/growth & development ; Databases, Factual ; Down-Regulation ; *Gene Expression ; *Gene Expression Profiling ; *Genes, Helminth ; *Genome ; Models, Genetic ; Multigene Family ; Oligonucleotide Array Sequence Analysis ; Open Reading Frames ; Up-Regulation
    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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    Transport of dsRNA into cells by the transmembrane protein SID-1 (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-09-13
    Description: RNA interference (RNAi) spreads systemically in plants and nematodes to silence gene expression distant from the site of initiation. We previously identified a gene, sid-1, essential for systemic but not cell-autonomous RNAi in Caenorhabditis elegans. Here, we demonstrate that SID-1 is a multispan transmembrane protein that sensitizes Drosophila cells to soaking RNAi with a potency that is dependent on double-stranded RNA (dsRNA) length. Further analyses revealed that SID-1 enables passive cellular uptake of dsRNA. These data indicate that systemic RNAi in C. elegans involves SID-1-mediated intercellular transport of dsRNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feinberg, Evan H -- Hunter, Craig P -- R01 GM069891/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2003 Sep 12;301(5639):1545-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12970568" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Animals ; Biological Transport ; Caenorhabditis elegans/*genetics ; Caenorhabditis elegans Proteins/chemistry/*metabolism ; Cell Line ; Diffusion ; Drosophila ; Membrane Proteins/chemistry/*metabolism ; *RNA Interference ; RNA, Double-Stranded/chemistry/genetics/*metabolism ; Recombinant Proteins/metabolism ; Transfection
    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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