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  • 1
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    Antigen-specific helper function of cell-free T cell products bearing TCR V beta 8 determinants (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-06-23
    Description: Although the T cell receptor (TCR) alpha beta heterodimer and its encoding genes have been characterized, a cell-free form of this receptor, which is needed for the study of functional or ligand-binding properties of the receptor, has not previously been isolated. When the cell-free supernatant products of activated cloned T helper (TH) cells were found to mediate helper activity with antigen specificity identical to that of intact T cells, experiments were carried out to determine whether this functional activity was mediated by a cell-free form of TCR-related material. A disulfide-linked dimer indistinguishable from the T cell surface alpha beta heterodimer was precipitated from cell-free supernatants of cloned TH cells with F23.1, a monoclonal antibody specific for a TCR V beta 8 determinant. Moreover, when cell-free TH products were bound to and eluted from immobilized F23.1, these affinity-purified materials had antigen-specific and major histocompatibility complex-restricted helper activity that synergized with recombinant lymphokines in the generation of B cell antibody responses. These findings suggest that the factor isolated from T cell supernatants is a cell-free form of the TCR alpha beta dimer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guy, R -- Ullrich, S J -- Foo-Philips, M -- Hathcock, K S -- Appella, E -- Hodes, R J -- New York, N.Y. -- Science. 1989 Jun 23;244(4911):1477-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Experimental Immunology Branch, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2472009" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal ; Antigens/*immunology ; B-Lymphocytes/immunology ; Disulfides ; Epitopes/immunology ; Hemocyanin/immunology ; Histocompatibility Antigens/immunology ; Immunoglobulin G/immunology ; Immunosorbent Techniques ; Interleukin-2/pharmacology ; Interleukin-4 ; Interleukins/pharmacology ; Lymphocyte Activation ; Macromolecular Substances ; Mice ; Molecular Weight ; Receptors, Antigen, T-Cell/*immunology/isolation & purification ; Recombinant Proteins ; Serum Albumin, Bovine/immunology ; T-Lymphocytes, Helper-Inducer/*immunology ; Trinitrobenzenes/immunology
    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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  • 2
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    Effect of phospholipase C-gamma overexpression on PDGF-induced second messengers and mitogenesis (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-05-04
    Description: Platelet-derived growth factor (PDGF) stimulates phospholipase C (PLC) activity and the phosphorylation of the gamma isozyme of PLC (PLC-gamma) in vitro and in living cells. The role of PLC-gamma in the phosphoinositide signaling pathway was addressed by examining the effect of overexpression of PLC-gamma on cellular responses to PDGF. Overexpression of PLC-gamma correlated with PDGF-induced tyrosine phosphorylation of PLC-gamma and with PDGF-induced breakdown of phosphatidylinositol 4,5-bisphosphate (PIP2). However, neither bradykinin- nor lysophosphatidic acid-induced phosphoinositide metabolism was enhanced in the transfected cells, suggesting that the G protein-coupled phosphoinositide responses to these ligands are mediated by other PLC isozymes. The enhanced PDGF-induced generation of inositol trisphosphate (IP3) did not enhance intracellular calcium signaling or influence PDGF-induced DNA synthesis. Thus, enzymes other than PLC-gamma may limit PDGF-induced calcium signaling and DNA synthesis. Alternatively, PDGF-induced calcium signaling and DNA synthesis may use biochemical pathways other than phosphoinositide metabolism for signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Margolis, B -- Zilberstein, A -- Franks, C -- Felder, S -- Kremer, S -- Ullrich, A -- Rhee, S G -- Skorecki, K -- Schlessinger, J -- New York, N.Y. -- Science. 1990 May 4;248(4955):607-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rorer Biotechnology, King of Prussia, PA 19406.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2333512" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/physiology ; Cattle ; Cell Division/*drug effects ; Cells, Cultured ; DNA Replication/drug effects ; Genetic Vectors ; Inositol Phosphates/metabolism ; Isoenzymes/biosynthesis/*genetics/metabolism ; Kinetics ; Mice ; Platelet-Derived Growth Factor/*pharmacology ; Second Messenger Systems/*drug effects ; Transfection ; Type C Phospholipases/biosynthesis/*genetics/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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  • 3
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    Studies of the HER-2/neu proto-oncogene in human breast and ovarian cancer (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-05-12
    Description: Carcinoma of the breast and ovary account for one-third of all cancers occurring in women and together are responsible for approximately one-quarter of cancer-related deaths in females. The HER-2/neu proto-oncogene is amplified in 25 to 30 percent of human primary breast cancers and this alteration is associated with disease behavior. In this report, several similarities were found in the biology of HER-2/neu in breast and ovarian cancer, including a similar incidence of amplification, a direct correlation between amplification and over-expression, evidence of tumors in which overexpression occurs without amplification, and the association between gene alteration and clinical outcome. A comprehensive study of the gene and its products (RNA and protein) was simultaneously performed on a large number of both tumor types. This analysis identified several potential shortcomings of the various methods used to evaluate HER-2/neu in these diseases (Southern, Northern, and Western blots, and immunohistochemistry) and provided information regarding considerations that should be addressed when studying a gene or gene product in human tissue. The data presented further support the concept that the HER-2/neu gene may be involved in the pathogenesis of some human cancers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Slamon, D J -- Godolphin, W -- Jones, L A -- Holt, J A -- Wong, S G -- Keith, D E -- Levin, W J -- Stuart, S G -- Udove, J -- Ullrich, A -- CA 36827/CA/NCI NIH HHS/ -- CA 48780/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1989 May 12;244(4905):707-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, U.C.L.A. School of Medicine 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2470152" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomarkers, Tumor ; Breast Neoplasms/*genetics ; Cloning, Molecular ; DNA/analysis ; Female ; Gene Amplification ; Gene Expression Regulation ; Humans ; Immunohistochemistry ; Nucleic Acid Hybridization ; Ovarian Neoplasms/*genetics ; Prognosis ; Protein Kinases ; Proto-Oncogene Proteins/*genetics ; *Proto-Oncogenes ; RNA/analysis ; Receptor, ErbB-2
    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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  • 4
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    A transcriptomic hourglass in plant embryogenesis (2012)
    Nature Publishing Group (NPG)
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    Publication Date: 2012-09-07
    Description: Animal and plant development starts with a constituting phase called embryogenesis, which evolved independently in both lineages. Comparative anatomy of vertebrate development--based on the Meckel-Serres law and von Baer's laws of embryology from the early nineteenth century--shows that embryos from various taxa appear different in early stages, converge to a similar form during mid-embryogenesis, and again diverge in later stages. This morphogenetic series is known as the embryonic 'hourglass', and its bottleneck of high conservation in mid-embryogenesis is referred to as the phylotypic stage. Recent analyses in zebrafish and Drosophila embryos provided convincing molecular support for the hourglass model, because during the phylotypic stage the transcriptome was dominated by ancient genes and global gene expression profiles were reported to be most conserved. Although extensively explored in animals, an embryonic hourglass has not been reported in plants, which represent the second major kingdom in the tree of life that evolved embryogenesis. Here we provide phylotranscriptomic evidence for a molecular embryonic hourglass in Arabidopsis thaliana, using two complementary approaches. This is particularly significant because the possible absence of an hourglass based on morphological features in plants suggests that morphological and molecular patterns might be uncoupled. Together with the reported developmental hourglass patterns in animals, these findings indicate convergent evolution of the molecular hourglass and a conserved logic of embryogenesis across kingdoms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Quint, Marcel -- Drost, Hajk-Georg -- Gabel, Alexander -- Ullrich, Kristian Karsten -- Bonn, Markus -- Grosse, Ivo -- England -- Nature. 2012 Oct 4;490(7418):98-101. doi: 10.1038/nature11394. Epub 2012 Sep 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Leibniz Institute of Plant Biochemistry, Department of Molecular Signal Processing, Weinberg 3, 06120 Halle (Saale), Germany. mquint@ipb-halle.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22951968" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arabidopsis/classification/*embryology/*genetics ; Brassicaceae/genetics ; Conserved Sequence/genetics ; Developmental Biology ; Drosophila/embryology/genetics ; Embryonic Development/genetics ; Evolution, Molecular ; Gene Expression Profiling ; Gene Expression Regulation, Plant/*genetics ; Genes, Plant/genetics ; Models, Biological ; Plant Development/*genetics ; Transcriptome/*genetics ; Zebrafish/embryology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
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    T-helper-1-cell cytokines drive cancer into senescence (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-02-05
    Description: Cancer control by adaptive immunity involves a number of defined death and clearance mechanisms. However, efficient inhibition of exponential cancer growth by T cells and interferon-gamma (IFN-gamma) requires additional undefined mechanisms that arrest cancer cell proliferation. Here we show that the combined action of the T-helper-1-cell cytokines IFN-gamma and tumour necrosis factor (TNF) directly induces permanent growth arrest in cancers. To safely separate senescence induced by tumour immunity from oncogene-induced senescence, we used a mouse model in which the Simian virus 40 large T antigen (Tag) expressed under the control of the rat insulin promoter creates tumours by attenuating p53- and Rb-mediated cell cycle control. When combined, IFN-gamma and TNF drive Tag-expressing cancers into senescence by inducing permanent growth arrest in G1/G0, activation of p16INK4a (also known as CDKN2A), and downstream Rb hypophosphorylation at serine 795. This cytokine-induced senescence strictly requires STAT1 and TNFR1 (also known as TNFRSF1A) signalling in addition to p16INK4a. In vivo, Tag-specific T-helper 1 cells permanently arrest Tag-expressing cancers by inducing IFN-gamma- and TNFR1-dependent senescence. Conversely, Tnfr1(-/-)Tag-expressing cancers resist cytokine-induced senescence and grow aggressively, even in TNFR1-expressing hosts. Finally, as IFN-gamma and TNF induce senescence in numerous murine and human cancers, this may be a general mechanism for arresting cancer progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Braumuller, Heidi -- Wieder, Thomas -- Brenner, Ellen -- Assmann, Sonja -- Hahn, Matthias -- Alkhaled, Mohammed -- Schilbach, Karin -- Essmann, Frank -- Kneilling, Manfred -- Griessinger, Christoph -- Ranta, Felicia -- Ullrich, Susanne -- Mocikat, Ralph -- Braungart, Kilian -- Mehra, Tarun -- Fehrenbacher, Birgit -- Berdel, Julia -- Niessner, Heike -- Meier, Friedegund -- van den Broek, Maries -- Haring, Hans-Ulrich -- Handgretinger, Rupert -- Quintanilla-Martinez, Leticia -- Fend, Falko -- Pesic, Marina -- Bauer, Jurgen -- Zender, Lars -- Schaller, Martin -- Schulze-Osthoff, Klaus -- Rocken, Martin -- England -- Nature. 2013 Feb 21;494(7437):361-5. doi: 10.1038/nature11824. Epub 2013 Feb 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Dermatology, Eberhard Karls University, Liebermeister Strasse 25, 72076 Tubingen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23376950" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Polyomavirus Transforming/genetics/metabolism ; Cell Aging/*immunology ; Cell Cycle ; Cell Proliferation ; Cyclin-Dependent Kinase Inhibitor p16/deficiency/genetics/metabolism ; Cytokines/*immunology ; Disease Models, Animal ; Disease Progression ; Female ; Humans ; Interferon-gamma/immunology ; Male ; Mice ; Mice, Inbred NOD ; Mice, SCID ; Mice, Transgenic ; Neoplasms/*immunology/*pathology ; Oncogenes/genetics ; Phosphoserine/metabolism ; Receptors, Tumor Necrosis Factor, Type I/metabolism ; Retinoblastoma Protein/chemistry/metabolism ; STAT1 Transcription Factor/metabolism ; Th1 Cells/*immunology ; Time Factors ; Tumor Cells, Cultured ; Tumor Necrosis Factor-alpha/immunology ; Tumor Suppressor Protein p53/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
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    Spatiotemporal control of endocytosis by phosphatidylinositol-3,4-bisphosphate (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-07-05
    Description: Phosphoinositides serve crucial roles in cell physiology, ranging from cell signalling to membrane traffic. Among the seven eukaryotic phosphoinositides the best studied species is phosphatidylinositol-4,5-bisphosphate (PI(4,5)P2), which is concentrated at the plasma membrane where, among other functions, it is required for the nucleation of endocytic clathrin-coated pits. No phosphatidylinositol other than PI(4,5)P2 has been implicated in clathrin-mediated endocytosis, whereas the subsequent endosomal stages of the endocytic pathway are dominated by phosphatidylinositol-3-phosphates(PI(3)P). How phosphatidylinositol conversion from PI(4,5)P2-positive endocytic intermediates to PI(3)P-containing endosomes is achieved is unclear. Here we show that formation of phosphatidylinositol-3,4-bisphosphate (PI(3,4)P2) by class II phosphatidylinositol-3-kinase C2alpha (PI(3)K C2alpha) spatiotemporally controls clathrin-mediated endocytosis. Depletion of PI(3,4)P2 or PI(3)K C2alpha impairs the maturation of late-stage clathrin-coated pits before fission. Timed formation of PI(3,4)P2 by PI(3)K C2alpha is required for selective enrichment of the BAR domain protein SNX9 at late-stage endocytic intermediates. These findings provide a mechanistic framework for the role of PI(3,4)P2 in endocytosis and unravel a novel discrete function of PI(3,4)P2 in a central cell physiological process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Posor, York -- Eichhorn-Gruenig, Marielle -- Puchkov, Dmytro -- Schoneberg, Johannes -- Ullrich, Alexander -- Lampe, Andre -- Muller, Rainer -- Zarbakhsh, Sirus -- Gulluni, Federico -- Hirsch, Emilio -- Krauss, Michael -- Schultz, Carsten -- Schmoranzer, Jan -- Noe, Frank -- Haucke, Volker -- England -- Nature. 2013 Jul 11;499(7457):233-7. doi: 10.1038/nature12360. Epub 2013 Jul 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Leibniz Institut fur Molekulare Pharmakologie & Freie Universitat Berlin, Robert-Roessle-Strasse 10, 13125 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23823722" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; COS Cells ; Cercopithecus aethiops ; Class II Phosphatidylinositol 3-Kinases/metabolism ; Clathrin-Coated Vesicles/metabolism ; *Endocytosis ; HEK293 Cells ; HeLa Cells ; Humans ; Molecular Sequence Data ; Phosphatidylinositol Phosphates/*metabolism ; Phosphoric Monoester Hydrolases/metabolism ; Sorting Nexins/metabolism ; Time Factors
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 7
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    Activation of a phosphotyrosine phosphatase by tyrosine phosphorylation (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-03-12
    Description: Regulation of cell proliferation, differentiation, and metabolic homeostasis is associated with the phosphorylation and dephosphorylation of specific tyrosine residues of key regulatory proteins. The phosphotyrosine phosphatase 1D (PTP 1D) contains two amino terminally located Src homology 2 (SH2) domains and is similar to the Drosophila corkscrew gene product, which positively regulates the torso tyrosine kinase signal transduction pathway. PTP activity was found to be regulated by physical interaction with a protein tyrosine kinase. PTP 1D did not dephosphorylate receptor tyrosine kinases, despite the fact that it associated with the epidermal growth factor receptor and chimeric receptors containing the extracellular domain of the epidermal growth factor receptor and the cytoplasmic domain of either the HER2-neu, kit-SCF, or platelet-derived growth factor beta (beta PDGF) receptors. PTP 1D was phosphorylated on tyrosine in cells overexpressing the beta PDGF receptor kinase and this tyrosine phosphorylation correlated with an enhancement of its catalytic activity. Thus, protein tyrosine kinases and phosphatases do not simply oppose each other's action; rather, they may work in concert to maintain a fine balance of effector activation needed for the regulation of cell growth and differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, W -- Lammers, R -- Huang, J -- Ullrich, A -- New York, N.Y. -- Science. 1993 Mar 12;259(5101):1611-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Max-Planck-Institut fur Biochemie, Martinsried, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7681217" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Line ; Chimera ; Drosophila/genetics ; Enzyme Activation ; Genes, src ; Humans ; Kidney ; Luminescent Measurements ; Mice ; Molecular Sequence Data ; Oligodeoxyribonucleotides ; Phosphorylation ; Phosphotyrosine ; Plasmids ; Protein Tyrosine Phosphatases/*metabolism ; Proto-Oncogene Proteins/genetics/metabolism ; Proto-Oncogene Proteins c-kit ; Proto-Oncogenes ; Receptor, Epidermal Growth Factor/genetics/metabolism ; Receptor, ErbB-2 ; Receptors, Platelet-Derived Growth Factor/genetics/metabolism ; Sequence Homology, Amino Acid ; Signal Transduction ; Transfection ; Tyrosine/*analogs & derivatives/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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  • 8
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    Genetic variation in the human insulin gene (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-08-01
    Description: Four recombinant lambda phages containing nucleotide sequences complementary to a cloned human preproinsulin DNA probe have been isolated from human DNA. Restriction analyses in conjunction with Southern hybridizations reveal two types of gene sequences. One isolate of each type was subjected to complete nucleotide sequence determination. The sequences contain the entire preproinsulin messenger RNA region, two intervening sequence. 260 nucleotides upstream from the messenger RNA capping site, and 35 nucleotides beyond the polyadenylate attachment site. Our results strongly suggest that these two gene types are allelic variants of a single insulin gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ullrich, A -- Dull, T J -- Gray, A -- Brosius, J -- Sures, I -- New York, N.Y. -- Science. 1980 Aug 1;209(4456):612-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6248962" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cloning, Molecular ; *Dna ; DNA Restriction Enzymes ; DNA, Recombinant/metabolism ; *Genes ; Genetic Code ; *Genetic Variation ; Humans ; Insulin/*biosynthesis ; Nucleic Acid Hybridization ; Proinsulin/biosynthesis ; Rats ; 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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  • 9
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    The human gene for the beta subunit of nerve growth factor is located on the proximal short arm of chromosome 1 (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-12-16
    Description: Fragments of the recently cloned human gene for the beta subunit of nerve growth factor (beta-NGF) were used as hybridization probes in analyzing two sets of rodent-human somatic cell hybrids for the presence of human beta-NGF sequences. Results from the first set of hybrids assigned the human beta-NGF gene to chromosome 1 and ruled out the presence of sequences of comparable homology on any other chromosome. With the second set of hybrids, which contained seven different, but overlapping, regions of chromosome 1, the NGF locus was mapped to band 1p22.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Francke, U -- de Martinville, B -- Coussens, L -- Ullrich, A -- GM 26105/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1983 Dec 16;222(4629):1248-51.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6648531" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Banding ; Chromosome Mapping ; *Chromosomes, Human, 1-3 ; Cricetinae ; *Genes ; Humans ; Hybrid Cells ; Nerve Growth Factors/*genetics ; Nucleic Acid Hybridization ; Oncogenes
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    The E3 ligase Cbl-b and TAM receptors regulate cancer metastasis via natural killer cells (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-02-21
    Description: Tumour metastasis is the primary cause of mortality in cancer patients and remains the key challenge for cancer therapy. New therapeutic approaches to block inhibitory pathways of the immune system have renewed hopes for the utility of such therapies. Here we show that genetic deletion of the E3 ubiquitin ligase Cbl-b (casitas B-lineage lymphoma-b) or targeted inactivation of its E3 ligase activity licenses natural killer (NK) cells to spontaneously reject metastatic tumours. The TAM tyrosine kinase receptors Tyro3, Axl and Mer (also known as Mertk) were identified as ubiquitylation substrates for Cbl-b. Treatment of wild-type NK cells with a newly developed small molecule TAM kinase inhibitor conferred therapeutic potential, efficiently enhancing anti-metastatic NK cell activity in vivo. Oral or intraperitoneal administration using this TAM inhibitor markedly reduced murine mammary cancer and melanoma metastases dependent on NK cells. We further report that the anticoagulant warfarin exerts anti-metastatic activity in mice via Cbl-b/TAM receptors in NK cells, providing a molecular explanation for a 50-year-old puzzle in cancer biology. This novel TAM/Cbl-b inhibitory pathway shows that it might be possible to develop a 'pill' that awakens the innate immune system to kill cancer metastases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paolino, Magdalena -- Choidas, Axel -- Wallner, Stephanie -- Pranjic, Blanka -- Uribesalgo, Iris -- Loeser, Stefanie -- Jamieson, Amanda M -- Langdon, Wallace Y -- Ikeda, Fumiyo -- Fededa, Juan Pablo -- Cronin, Shane J -- Nitsch, Roberto -- Schultz-Fademrecht, Carsten -- Eickhoff, Jan -- Menninger, Sascha -- Unger, Anke -- Torka, Robert -- Gruber, Thomas -- Hinterleitner, Reinhard -- Baier, Gottfried -- Wolf, Dominik -- Ullrich, Axel -- Klebl, Bert M -- Penninger, Josef M -- W 1101/Austrian Science Fund FWF/Austria -- England -- Nature. 2014 Mar 27;507(7493):508-12. doi: 10.1038/nature12998. Epub 2014 Feb 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, 1030 Vienna, Austria. ; Lead Discovery Center GmbH, D-44227 Dortmund, Germany. ; Medical University Innsbruck, 6020 Innsbruck, Austria. ; Department of Microbiology and Immunology, Brown University, Providence, Rhode Island 02912, USA. ; School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, Western Australia 6009, Perth, Australia. ; Max-Planck, Institute for Biochemistry, Department of Molecular Biology, D-82152 Martinsried, Germany. ; 1] Medical University Innsbruck, 6020 Innsbruck, Austria [2] Internal Medicine III, University Hospital Bonn, 53127 Bonn, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24553136" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/deficiency/genetics/*metabolism ; Animals ; Anticoagulants/pharmacology/therapeutic use ; Female ; Killer Cells, Natural/drug effects/*immunology/metabolism ; Male ; Mammary Neoplasms, Experimental/drug therapy/genetics/immunology/*pathology ; Melanoma, Experimental/drug therapy/genetics/immunology/*pathology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Neoplasm Metastasis/drug therapy/*immunology/prevention & control ; Proto-Oncogene Proteins/antagonists & inhibitors/metabolism ; Proto-Oncogene Proteins c-cbl/deficiency/genetics/*metabolism ; Receptor Protein-Tyrosine Kinases/antagonists & inhibitors/*metabolism ; Ubiquitin-Protein Ligases/deficiency/genetics/*metabolism ; Ubiquitination ; Warfarin/pharmacology/therapeutic use
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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