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  • Cell Line  (4)
  • American Association for the Advancement of Science (AAAS)  (4)
  • 2005-2009  (1)
  • 2000-2004  (3)
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Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (4)
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Year
  • 1
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    Tissue-specific regulation of retinal and pituitary precursor cell proliferation (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-20
    Description: Mammalian organogenesis requires the expansion of pluripotent precursor cells before the subsequent determination of specific cell types, but the tissue-specific molecular mechanisms that regulate the initial expansion of primordial cells remain poorly defined. We have genetically established that Six6 homeodomain factor, acting as a strong tissue-specific repressor, regulates early progenitor cell proliferation during mammalian retinogenesis and pituitary development. Six6, in association with Dach corepressors, regulates proliferation by directly repressing cyclin-dependent kinase inhibitors, including the p27Kip1 promoter. These data reveal a molecular mechanism by which a tissue-specific transcriptional repressor-corepressor complex can provide an organ-specific strategy for physiological expansion of precursor populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Xue -- Perissi, Valentina -- Liu, Forrest -- Rose, David W -- Rosenfeld, Michael G -- 484/B/Telethon/Italy -- 5F32DK09814/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2002 Aug 16;297(5584):1180-3. Epub 2002 Jul 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular Medicine, University of California, San Diego, School of Medicine, 9500 Gilman Drive, Room 345, La Jolla, CA 92093-0648, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12130660" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Cycle ; Cell Cycle Proteins/genetics/metabolism ; *Cell Division ; Cell Line ; Cyclin-Dependent Kinase Inhibitor p27 ; Cyclin-Dependent Kinases/antagonists & inhibitors ; Embryo, Mammalian/cytology ; Eye Proteins/metabolism ; Homeodomain Proteins/*genetics/*metabolism ; Mice ; Nuclear Proteins/metabolism ; Organ Specificity ; Pituitary Gland/*cytology/embryology ; Promoter Regions, Genetic ; Proto-Oncogene Proteins/genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; Repressor Proteins/metabolism ; Retina/*cytology/embryology ; Retinal Ganglion Cells/cytology/physiology ; Stem Cells/*physiology ; Trans-Activators/*genetics/*metabolism ; Transcription Factors ; Transcription, Genetic ; Transfection ; Tumor Suppressor Proteins/genetics/metabolism ; 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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  • 2
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    Induction and suppression of RNA silencing by an animal virus (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-23
    Description: RNA silencing is a sequence-specific RNA degradation mechanism that is operational in plants and animals. Here, we show that flock house virus (FHV) is both an initiator and a target of RNA silencing in Drosophila host cells and that FHV infection requires suppression of RNA silencing by an FHV-encoded protein, B2. These findings establish RNA silencing as an adaptive antiviral defense in animal cells. B2 also inhibits RNA silencing in transgenic plants, providing evidence for a conserved RNA silencing pathway in the plant and animal kingdoms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Hongwei -- Li, Wan Xiang -- Ding, Shou Wei -- New York, N.Y. -- Science. 2002 May 17;296(5571):1319-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Pathology and Center for Plant Cell Biology, University of California, Riverside, CA 92521, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12016316" target="_blank"〉PubMed〈/a〉
    Keywords: Agrobacterium tumefaciens/genetics ; Animals ; Cell Line ; Drosophila/genetics/*virology ; *Gene Silencing ; Genes, Viral ; Green Fluorescent Proteins ; Luminescent Proteins/genetics ; Nodaviridae/*genetics/*physiology ; Plant Leaves/genetics/metabolism ; Plants, Genetically Modified ; RNA, Double-Stranded/genetics/metabolism ; RNA, Small Interfering ; RNA, Untranslated/*metabolism ; RNA, Viral/genetics/metabolism ; Tobacco/*genetics/metabolism/microbiology ; Transfection ; Viral Proteins/genetics/*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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  • 3
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    S-nitrosylation of parkin regulates ubiquitination and compromises parkin's protective function (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-24
    Description: Parkin is an E3 ubiquitin ligase involved in the ubiquitination of proteins that are important in the survival of dopamine neurons in Parkinson's disease (PD). We show that parkin is S-nitrosylated in vitro, as well as in vivo in a mouse model of PD and in brains of patients with PD and diffuse Lewy body disease. Moreover, S-nitrosylation inhibits parkin's ubiquitin E3 ligase activity and its protective function. The inhibition of parkin's ubiquitin E3 ligase activity by S-nitrosylation could contribute to the degenerative process in these disorders by impairing the ubiquitination of parkin substrates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chung, Kenny K K -- Thomas, Bobby -- Li, Xiaojie -- Pletnikova, Olga -- Troncoso, Juan C -- Marsh, Laura -- Dawson, Valina L -- Dawson, Ted M -- NS38377/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2004 May 28;304(5675):1328-31. Epub 2004 Apr 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15105460" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/metabolism ; Animals ; Brain/metabolism ; Carrier Proteins/genetics/metabolism ; Catalytic Domain ; Cell Death ; Cell Line ; Cysteine Proteinase Inhibitors/pharmacology ; Humans ; Lewy Body Disease/metabolism ; MPTP Poisoning/metabolism ; Mice ; Mice, Knockout ; Nerve Tissue Proteins/genetics/metabolism ; Nitric Oxide/*metabolism ; Nitric Oxide Donors/pharmacology ; Nitric Oxide Synthase/genetics/metabolism ; Parkinson Disease/*metabolism ; Recombinant Proteins/metabolism ; Synucleins ; Transfection ; Ubiquitin/*metabolism ; Ubiquitin-Protein Ligases/antagonists & inhibitors/chemistry/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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  • 4
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    RNA interference directs innate immunity against viruses in adult Drosophila (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-03-25
    Description: Innate immunity against bacterial and fungal pathogens is mediated by Toll and immune deficiency (Imd) pathways, but little is known about the antiviral response in Drosophila. Here, we demonstrate that an RNA interference pathway protects adult flies from infection by two evolutionarily diverse viruses. Our work also describes a molecular framework for the viral immunity, in which viral double-stranded RNA produced during infection acts as the pathogen trigger whereas Drosophila Dicer-2 and Argonaute-2 act as host sensor and effector, respectively. These findings establish a Drosophila model for studying the innate immunity against viruses in animals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1509097/" 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/PMC1509097/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Xiao-Hong -- Aliyari, Roghiyh -- Li, Wan-Xiang -- Li, Hong-Wei -- Kim, Kevin -- Carthew, Richard -- Atkinson, Peter -- Ding, Shou-Wei -- AI052447/AI/NIAID NIH HHS/ -- R01 AI052447/AI/NIAID NIH HHS/ -- R01 GM068743/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Apr 21;312(5772):452-4. Epub 2006 Mar 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Program for Microbiology, University of California, Riverside, CA 92521, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16556799" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Argonaute Proteins ; Cell Line ; Drosophila Proteins/genetics/metabolism/physiology ; Drosophila melanogaster/embryology/genetics/*immunology/*virology ; Embryo, Nonmammalian/immunology/virology ; Escherichia coli/physiology ; *Immunity, Innate ; Insect Viruses/genetics/*physiology ; Micrococcus luteus/physiology ; Mutation ; Nodaviridae/*physiology ; RNA Helicases/genetics/metabolism ; *RNA Interference ; RNA Viruses/genetics/physiology ; RNA, Double-Stranded/metabolism ; RNA, Small Interfering/metabolism ; RNA, Viral/genetics/metabolism ; RNA-Binding Proteins/genetics/physiology ; RNA-Induced Silencing Complex/genetics/physiology ; Ribonuclease III ; Signal Transduction ; Toll-Like Receptors/physiology ; Transfection ; Virus Replication
    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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