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  • 1
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    An X chromosome gene, WTX, is commonly inactivated in Wilms tumor (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-01-06
    Description: Wilms tumor is a pediatric kidney cancer associated with inactivation of the WT1 tumor-suppressor gene in 5 to 10% of cases. Using a high-resolution screen for DNA copy-number alterations in Wilms tumor, we identified somatic deletions targeting a previously uncharacterized gene on the X chromosome. This gene, which we call WTX, is inactivated in approximately one-third of Wilms tumors (15 of 51 tumors). Tumors with mutations in WTX lack WT1 mutations, and both genes share a restricted temporal and spatial expression pattern in normal renal precursors. In contrast to biallelic inactivation of autosomal tumor-suppressor genes, WTX is inactivated by a monoallelic "single-hit" event targeting the single X chromosome in tumors from males and the active X chromosome in tumors from females.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rivera, Miguel N -- Kim, Woo Jae -- Wells, Julie -- Driscoll, David R -- Brannigan, Brian W -- Han, Moonjoo -- Kim, James C -- Feinberg, Andrew P -- Gerald, William L -- Vargas, Sara O -- Chin, Lynda -- Iafrate, A John -- Bell, Daphne W -- Haber, Daniel A -- P01-CA101942/CA/NCI NIH HHS/ -- R37 CA054358/CA/NCI NIH HHS/ -- R37 CA054358-17/CA/NCI NIH HHS/ -- R37-CA058596/CA/NCI NIH HHS/ -- T32-CA009216/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2007 Feb 2;315(5812):642-5. Epub 2007 Jan 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Massachusetts General Hospital Cancer Center, Harvard Medical Center, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17204608" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing ; Alleles ; Amino Acid Sequence ; Animals ; Cell Line ; Chromosome Deletion ; Chromosomes, Human, X/*genetics ; Female ; Gene Expression ; *Gene Silencing ; *Genes, Wilms Tumor ; Heterozygote ; Humans ; In Situ Hybridization, Fluorescence ; Kidney/embryology/metabolism ; Kidney Neoplasms/*genetics ; Male ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Mutation ; Point Mutation ; Tumor Suppressor Proteins/chemistry/*genetics/physiology ; Wilms Tumor/*genetics ; beta Catenin/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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  • 2
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    Regulation of dendritic cell migration by CD74, the MHC class II-associated invariant chain (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-12-17
    Description: Dendritic cells (DCs) sample peripheral tissues of the body in search of antigens to present to T cells. This requires two processes, antigen processing and cell motility, originally thought to occur independently. We found that the major histocompatibility complex II-associated invariant chain (Ii or CD74), a known regulator of antigen processing, negatively regulates DC motility in vivo. By using microfabricated channels to mimic the confined environment of peripheral tissues, we found that wild-type DCs alternate between high and low motility, whereas Ii-deficient cells moved in a faster and more uniform manner. The regulation of cell motility by Ii depended on the actin-based motor protein myosin II. Coupling antigen processing and cell motility may enable DCs to more efficiently detect and process antigens within a defined space.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Faure-Andre, Gabrielle -- Vargas, Pablo -- Yuseff, Maria-Isabel -- Heuze, Melina -- Diaz, Jheimmy -- Lankar, Danielle -- Steri, Veronica -- Manry, Jeremy -- Hugues, Stephanie -- Vascotto, Fulvia -- Boulanger, Jerome -- Raposo, Graca -- Bono, Maria-Rosa -- Rosemblatt, Mario -- Piel, Matthieu -- Lennon-Dumenil, Ana-Maria -- New York, N.Y. -- Science. 2008 Dec 12;322(5908):1705-10. doi: 10.1126/science.1159894.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉INSERM U653, Institut Curie, 12 rue Lhomond, 75005, Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19074353" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen Presentation ; Antigens, Differentiation, B-Lymphocyte/genetics/*metabolism ; Cathepsins/genetics/metabolism ; *Cell Movement ; Dendritic Cells/*immunology/physiology ; Endocytosis ; Histocompatibility Antigens Class II/genetics/*metabolism ; Lipopolysaccharides/immunology ; Lymph Nodes/cytology/immunology ; Lysosomes/metabolism ; Mice ; Mice, Inbred C57BL ; Myosin Type II/*metabolism ; Phosphorylation
    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)
    Location Call Number Expected Availability
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    PAPER CURRENT
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