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  • 1
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    Exome sequencing identifies frequent mutation of the SWI/SNF complex gene PBRM1 in renal carcinoma (2011)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2011-01-21
    Description: The genetics of renal cancer is dominated by inactivation of the VHL tumour suppressor gene in clear cell carcinoma (ccRCC), the commonest histological subtype. A recent large-scale screen of approximately 3,500 genes by PCR-based exon re-sequencing identified several new cancer genes in ccRCC including UTX (also known as KDM6A), JARID1C (also known as KDM5C) and SETD2 (ref. 2). These genes encode enzymes that demethylate (UTX, JARID1C) or methylate (SETD2) key lysine residues of histone H3. Modification of the methylation state of these lysine residues of histone H3 regulates chromatin structure and is implicated in transcriptional control. However, together these mutations are present in fewer than 15% of ccRCC, suggesting the existence of additional, currently unidentified cancer genes. Here, we have sequenced the protein coding exome in a series of primary ccRCC and report the identification of the SWI/SNF chromatin remodelling complex gene PBRM1 (ref. 4) as a second major ccRCC cancer gene, with truncating mutations in 41% (92/227) of cases. These data further elucidate the somatic genetic architecture of ccRCC and emphasize the marked contribution of aberrant chromatin biology.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3030920/" 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/PMC3030920/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Varela, Ignacio -- Tarpey, Patrick -- Raine, Keiran -- Huang, Dachuan -- Ong, Choon Kiat -- Stephens, Philip -- Davies, Helen -- Jones, David -- Lin, Meng-Lay -- Teague, Jon -- Bignell, Graham -- Butler, Adam -- Cho, Juok -- Dalgliesh, Gillian L -- Galappaththige, Danushka -- Greenman, Chris -- Hardy, Claire -- Jia, Mingming -- Latimer, Calli -- Lau, King Wai -- Marshall, John -- McLaren, Stuart -- Menzies, Andrew -- Mudie, Laura -- Stebbings, Lucy -- Largaespada, David A -- Wessels, L F A -- Richard, Stephane -- Kahnoski, Richard J -- Anema, John -- Tuveson, David A -- Perez-Mancera, Pedro A -- Mustonen, Ville -- Fischer, Andrej -- Adams, David J -- Rust, Alistair -- Chan-on, Waraporn -- Subimerb, Chutima -- Dykema, Karl -- Furge, Kyle -- Campbell, Peter J -- Teh, Bin Tean -- Stratton, Michael R -- Futreal, P Andrew -- 077012/Wellcome Trust/United Kingdom -- 077012/Z/05/Z/Wellcome Trust/United Kingdom -- 088340/Wellcome Trust/United Kingdom -- 093867/Wellcome Trust/United Kingdom -- R01 CA113636/CA/NCI NIH HHS/ -- R01 CA134759/CA/NCI NIH HHS/ -- Cancer Research UK/United Kingdom -- England -- Nature. 2011 Jan 27;469(7331):539-42. doi: 10.1038/nature09639. Epub 2011 Jan 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton CB10 1SA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21248752" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinoma, Renal Cell/*genetics ; Cell Line, Tumor ; Disease Models, Animal ; Gene Expression Regulation ; Gene Knockdown Techniques ; Humans ; Kidney Neoplasms/*genetics ; Mice ; Mutation/*genetics ; Nuclear Proteins/*genetics/*metabolism ; Pancreatic Neoplasms/genetics ; Transcription Factors/*genetics/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Fas ligand: a sensor for DNA damage critical in skin cancer etiology (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-08-07
    Description: DNA-damaged cells can either repair the DNA or be eliminated through a homeostatic control mechanism termed "cellular proofreading." Elimination of DNA-damaged cells after ultraviolet radiation (UVR) through sunburn cell (apoptotic keratinocyte) formation is thought to be pivotal for the removal of precancerous skin cells. Sunburn cell formation was found to be dependent on Fas ligand (FasL), a pro-apoptotic protein induced by DNA damage. Chronic exposure to UVR caused 14 of 20 (70 percent) FasL-deficient mice and 1 of 20 (5 percent) wild-type mice to accumulate p53 mutations in the epidermis. Thus, FasL-mediated apoptosis is important for skin homeostasis, suggesting that the dysregulation of Fas-FasL interactions may be central to the development of skin cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hill, L L -- Ouhtit, A -- Loughlin, S M -- Kripke, M L -- Ananthaswamy, H N -- Owen-Schaub, L B -- CA45623/CA/NCI NIH HHS/ -- CA52457/CA/NCI NIH HHS/ -- F32 AI09351/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 Aug 6;285(5429):898-900.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, University of Texas, M. D. Anderson Cancer Center, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10436160" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD95/genetics/physiology ; Apoptosis ; *DNA Damage ; Epidermis/*cytology/metabolism/radiation effects ; Fas Ligand Protein ; *Genes, p53 ; Keratinocytes/*cytology/metabolism/radiation effects ; Membrane Glycoproteins/genetics/*physiology ; Mice ; Mice, Inbred C3H ; Mutation ; Skin Neoplasms/*etiology/pathology ; Ultraviolet Rays ; 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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    Equilibrative nucleoside transporter 3 deficiency perturbs lysosome function and macrophage homeostasis (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-12-17
    Description: Lysosomal storage diseases (LSDs) are a group of heterogeneous disorders caused by defects in lysosomal enzymes or transporters, resulting in accumulation of undegraded macromolecules or metabolites. Macrophage numbers are expanded in several LSDs, leading to histiocytosis of unknown pathophysiology. Here, we found that mice lacking the equilibrative nucleoside transporter 3 (ENT3) developed a spontaneous and progressive macrophage-dominated histiocytosis. In the absence of ENT3, defective apoptotic cell clearance led to lysosomal nucleoside buildup, elevated intralysosomal pH, and altered macrophage function. The macrophage accumulation was partly due to increased macrophage colony-stimulating factor and receptor expression and signaling secondary to the lysosomal defects. These studies suggest a cellular and molecular basis for the development of histiocytosis in several human syndromes associated with ENT3 mutations and potentially other LSDs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hsu, Chia-Lin -- Lin, Weiyu -- Seshasayee, Dhaya -- Chen, Yung-Hsiang -- Ding, Xiao -- Lin, Zhonghua -- Suto, Eric -- Huang, Zhiyu -- Lee, Wyne P -- Park, Hyunjoo -- Xu, Min -- Sun, Mei -- Rangell, Linda -- Lutman, Jeff L -- Ulufatu, Sheila -- Stefanich, Eric -- Chalouni, Cecile -- Sagolla, Meredith -- Diehl, Lauri -- Fielder, Paul -- Dean, Brian -- Balazs, Mercedesz -- Martin, Flavius -- New York, N.Y. -- Science. 2012 Jan 6;335(6064):89-92. doi: 10.1126/science.1213682. Epub 2011 Dec 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunology, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22174130" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/metabolism ; Animals ; Apoptosis ; Cell Count ; Cell Proliferation ; Cells, Cultured ; Histiocytosis/*physiopathology ; *Homeostasis ; Humans ; Hydrogen-Ion Concentration ; Listeriosis/immunology/microbiology ; Lysosomal Storage Diseases/physiopathology ; Lysosomes/*physiology/ultrastructure ; Macrophage Colony-Stimulating Factor/metabolism ; Macrophages/immunology/*physiology/ultrastructure ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Myelopoiesis ; Nucleoside Transport Proteins/genetics/*physiology ; Phagocytosis ; Receptor, Macrophage Colony-Stimulating Factor/metabolism ; Signal Transduction ; Thymocytes/immunology/physiology
    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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    Critical thickness investigation of magnetic properties in exchange-coupled bilayers (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-06-25
    Description: Author(s): R. L. Rodríguez-Suárez, L. H. Vilela-Leão, T. Bueno, A. B. Oliveira, J. R. L. de Almeida, P. Landeros, S. M. Rezende, and A. Azevedo We present a systematic investigation of the magnetic properties of two series of polycrystalline ferromagnetic-antiferromagnetic bilayers (FM-AF) of Ni 81 Fe 19 (10nm)/Ir 20 Mn 80 ( t AF ) grown by dc magnetron sputtering. One series was grown at an oblique angle of 50° and the other one was grown at 0°. Ferr... [Phys. Rev. B 83, 224418] Published Fri Jun 24, 2011
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 5
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    Spin reorientation in α-Fe_{2}O_{3} nanoparticles induced by interparticle exchange interactions in α-Fe_{2}O_{3}/NiO nanocomposites (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-12-23
    Description: Author(s): C. Frandsen, K. Lefmann, B. Lebech, C. R. H. Bahl, E. Brok, S. N. Ancoña, L. Theil Kuhn, L. Keller, T. Kasama, L. C. Gontard, and S. Mørup [Phys. Rev. B 84, 214435] Published Thu Dec 22, 2011
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 6
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    Regulation of intestinal alpha-defensin activation by the metalloproteinase matrilysin in innate host defense (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-10-03
    Description: Precursors of alpha-defensin peptides require activation for bactericidal activity. In mouse small intestine, matrilysin colocalized with alpha-defensins (cryptdins) in Paneth cell granules, and in vitro it cleaved the pro segment from cryptdin precursors. Matrilysin-deficient (MAT-/-) mice lacked mature cryptdins and accumulated precursor molecules. Intestinal peptide preparations from MAT-/- mice had decreased antimicrobial activity. Orally administered bacteria survived in greater numbers and were more virulent in MAT-/- mice than in MAT+/+ mice. Thus, matrilysin functions in intestinal mucosal defense by regulating the activity of defensins, which may be a common role for this metalloproteinase in its numerous epithelial sites of expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, C L -- Ouellette, A J -- Satchell, D P -- Ayabe, T -- Lopez-Boado, Y S -- Stratman, J L -- Hultgren, S J -- Matrisian, L M -- Parks, W C -- New York, N.Y. -- Science. 1999 Oct 1;286(5437):113-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Division of Allergy and Pulmonary Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA. wilson_c@kids.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10506557" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Catalysis ; Cytoplasmic Granules/enzymology ; Escherichia coli/growth & development ; Escherichia coli Infections/immunology/microbiology ; Female ; Humans ; *Immunity, Innate ; *Immunity, Mucosal ; Intestinal Mucosa/enzymology/immunology/microbiology ; Intestine, Small/enzymology/*immunology/microbiology ; Male ; Matrix Metalloproteinase 7 ; Metalloendopeptidases/genetics/*metabolism ; Mice ; Molecular Sequence Data ; Paneth Cells/enzymology ; Protein Precursors/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Salmonella typhimurium/growth & development/pathogenicity ; Tissue Extracts/pharmacology
    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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  • 7
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    An MTP inhibitor that normalizes atherogenic lipoprotein levels in WHHL rabbits (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-23
    Description: Patients with abetalipoproteinemia, a disease caused by defects in the microsomal triglyceride transfer protein (MTP), do not produce apolipoprotein B-containing lipoproteins. It was hypothesized that small molecule inhibitors of MTP would prevent the assembly and secretion of these atherogenic lipoproteins. To test this hypothesis, two compounds identified in a high-throughput screen for MTP inhibitors were used to direct the synthesis of a highly potent MTP inhibitor. This molecule (compound 9) inhibited the production of lipoprotein particles in rodent models and normalized plasma lipoprotein levels in Watanabe-heritable hyperlipidemic (WHHL) rabbits, which are a model for human homozygous familial hypercholesterolemia. These results suggest that compound 9, or derivatives thereof, has potential applications for the therapeutic lowering of atherogenic lipoprotein levels in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wetterau, J R -- Gregg, R E -- Harrity, T W -- Arbeeny, C -- Cap, M -- Connolly, F -- Chu, C H -- George, R J -- Gordon, D A -- Jamil, H -- Jolibois, K G -- Kunselman, L K -- Lan, S J -- Maccagnan, T J -- Ricci, B -- Yan, M -- Young, D -- Chen, Y -- Fryszman, O M -- Logan, J V -- Musial, C L -- Poss, M A -- Robl, J A -- Simpkins, L M -- Slusarchyk, W A -- Sulsky, R -- Taunk, P -- Magnin, D R -- Tino, J A -- Lawrence, R M -- Dickson, J K Jr -- Biller, S A -- New York, N.Y. -- Science. 1998 Oct 23;282(5389):751-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Metabolic Diseases, Bristol-Myers Squibb Pharmaceutical Research Institute, Princeton, NJ 08543-4000, USA. Wetterau_John_R@msmail.bms.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9784135" target="_blank"〉PubMed〈/a〉
    Keywords: Alanine Transaminase/blood ; Animals ; Apolipoproteins B/*blood ; Aspartate Aminotransferases/blood ; Carrier Proteins/*antagonists & inhibitors ; Cholesterol/*blood ; Cricetinae ; Disease Models, Animal ; Dose-Response Relationship, Drug ; Drug Design ; Drug Evaluation, Preclinical ; Fluorenes/chemistry/pharmacokinetics/*pharmacology ; Humans ; Hyperlipidemias/blood/drug therapy ; Hyperlipoproteinemia Type II/*blood/drug therapy ; Lipids/blood ; Lipoproteins/blood ; Liver/metabolism ; Mice ; Piperidines/chemistry/pharmacokinetics/*pharmacology ; Rabbits ; Rats ; Triglycerides/*blood/metabolism ; Tumor Cells, Cultured
    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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    A Burkholderia pseudomallei toxin inhibits helicase activity of translation factor eIF4A (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-11-15
    Description: The structure of BPSL1549, a protein of unknown function from Burkholderia pseudomallei, reveals a similarity to Escherichia coli cytotoxic necrotizing factor 1. We found that BPSL1549 acted as a potent cytotoxin against eukaryotic cells and was lethal when administered to mice. Expression levels of bpsl1549 correlate with conditions expected to promote or suppress pathogenicity. BPSL1549 promotes deamidation of glutamine-339 of the translation initiation factor eIF4A, abolishing its helicase activity and inhibiting translation. We propose to name BPSL1549 Burkholderia lethal factor 1.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3364511/" 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/PMC3364511/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cruz-Migoni, Abimael -- Hautbergue, Guillaume M -- Artymiuk, Peter J -- Baker, Patrick J -- Bokori-Brown, Monika -- Chang, Chung-Te -- Dickman, Mark J -- Essex-Lopresti, Angela -- Harding, Sarah V -- Mahadi, Nor Muhammad -- Marshall, Laura E -- Mobbs, George W -- Mohamed, Rahmah -- Nathan, Sheila -- Ngugi, Sarah A -- Ong, Catherine -- Ooi, Wen Fong -- Partridge, Lynda J -- Phillips, Helen L -- Raih, M Firdaus -- Ruzheinikov, Sergei -- Sarkar-Tyson, Mitali -- Sedelnikova, Svetlana E -- Smither, Sophie J -- Tan, Patrick -- Titball, Richard W -- Wilson, Stuart A -- Rice, David W -- 085162/Wellcome Trust/United Kingdom -- BB/D011795/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/D524975/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/E025293/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- WT085162AIA/Wellcome Trust/United Kingdom -- Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2011 Nov 11;334(6057):821-4. doi: 10.1126/science.1211915.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Biotechnology, Krebs Institute, University of Sheffield, Sheffield S10 2TN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22076380" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; Bacterial Proteins/*chemistry/genetics/metabolism/*toxicity ; Bacterial Toxins/*chemistry/genetics/metabolism/*toxicity ; Burkholderia pseudomallei/*chemistry/*pathogenicity ; Catalytic Domain ; Cell Line ; Crystallography, X-Ray ; Cytotoxins/chemistry/genetics/metabolism/toxicity ; Escherichia coli Proteins/chemistry ; Eukaryotic Initiation Factor-4A/*antagonists & inhibitors/metabolism ; Glutamine/metabolism ; Humans ; Mice ; Mice, Inbred BALB C ; Models, Molecular ; Mutant Proteins/toxicity ; Peptide Chain Initiation, Translational/drug effects ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary
    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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    A small, nonpeptidyl mimic of granulocyte-colony-stimulating factor [see commetns] (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-07-10
    Description: A nonpeptidyl small molecule SB 247464, capable of activating granulocyte-colony-stimulating factor (G-CSF) signal transduction pathways, was identified in a high-throughput assay in cultured cells. Like G-CSF, SB 247464 induced tyrosine phosphorylation of multiple signaling proteins and stimulated primary murine bone marrow cells to form granulocytic colonies in vitro. It also elevated peripheral blood neutrophil counts in mice. The extracellular domain of the murine G-CSF receptor was required for the activity of SB 247464, suggesting that the compound acts by oligomerizing receptor chains. The results indicate that a small molecule can activate a receptor that normally binds a relatively large protein ligand.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tian, S S -- Lamb, P -- King, A G -- Miller, S G -- Kessler, L -- Luengo, J I -- Averill, L -- Johnson, R K -- Gleason, J G -- Pelus, L M -- Dillon, S B -- Rosen, J -- New York, N.Y. -- Science. 1998 Jul 10;281(5374):257-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Transcription Research, Ligand Pharmaceuticals, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9657720" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzimidazoles/chemistry/metabolism/*pharmacology ; Cell Line ; Colony-Forming Units Assay ; DNA-Binding Proteins/metabolism ; Dimerization ; Female ; Granulocyte Colony-Stimulating Factor/metabolism/pharmacology ; Granulocytes/cytology ; Guanidines/chemistry/metabolism/*pharmacology ; Humans ; Janus Kinase 1 ; Janus Kinase 2 ; Leukocyte Count ; Leukopoiesis ; Mice ; Mice, Inbred C57BL ; *Milk Proteins ; Neutrophils/cytology ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein-Tyrosine Kinases/metabolism ; *Proto-Oncogene Proteins ; Receptors, Granulocyte Colony-Stimulating Factor/chemistry/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; STAT3 Transcription Factor ; STAT5 Transcription Factor ; Signal Transduction/drug effects ; Species Specificity ; Trans-Activators/metabolism ; Transfection ; Tumor Cells, Cultured
    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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  • 10
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    SCF(FBW7) regulates cellular apoptosis by targeting MCL1 for ubiquitylation and destruction (2011)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2011-03-04
    Description: The effective use of targeted therapy is highly dependent on the identification of responder patient populations. Loss of FBW7, which encodes a tumour-suppressor protein, is frequently found in various types of human cancer, including breast cancer, colon cancer and T-cell acute lymphoblastic leukaemia (T-ALL). In line with these genomic data, engineered deletion of Fbw7 in mouse T cells results in T-ALL, validating FBW7 as a T-ALL tumour suppressor. Determining the precise molecular mechanisms by which FBW7 exerts antitumour activity is an area of intensive investigation. These mechanisms are thought to relate in part to FBW7-mediated destruction of key proteins relevant to cancer, including Jun, Myc, cyclin E and notch 1 (ref. 9), all of which have oncoprotein activity and are overexpressed in various human cancers, including leukaemia. In addition to accelerating cell growth, overexpression of Jun, Myc or notch 1 can also induce programmed cell death. Thus, considerable uncertainty surrounds how FBW7-deficient cells evade cell death in the setting of upregulated Jun, Myc and/or notch 1. Here we show that the E3 ubiquitin ligase SCF(FBW7) (a SKP1-cullin-1-F-box complex that contains FBW7 as the F-box protein) governs cellular apoptosis by targeting MCL1, a pro-survival BCL2 family member, for ubiquitylation and destruction in a manner that depends on phosphorylation by glycogen synthase kinase 3. Human T-ALL cell lines showed a close relationship between FBW7 loss and MCL1 overexpression. Correspondingly, T-ALL cell lines with defective FBW7 are particularly sensitive to the multi-kinase inhibitor sorafenib but resistant to the BCL2 antagonist ABT-737. On the genetic level, FBW7 reconstitution or MCL1 depletion restores sensitivity to ABT-737, establishing MCL1 as a therapeutically relevant bypass survival mechanism that enables FBW7-deficient cells to evade apoptosis. Therefore, our work provides insight into the molecular mechanism of direct tumour suppression by FBW7 and has implications for the targeted treatment of patients with FBW7-deficient T-ALL.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3076007/" 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/PMC3076007/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Inuzuka, Hiroyuki -- Shaik, Shavali -- Onoyama, Ichiro -- Gao, Daming -- Tseng, Alan -- Maser, Richard S -- Zhai, Bo -- Wan, Lixin -- Gutierrez, Alejandro -- Lau, Alan W -- Xiao, Yonghong -- Christie, Amanda L -- Aster, Jon -- Settleman, Jeffrey -- Gygi, Steven P -- Kung, Andrew L -- Look, Thomas -- Nakayama, Keiichi I -- DePinho, Ronald A -- Wei, Wenyi -- GM089763/GM/NIGMS NIH HHS/ -- R01 GM089763/GM/NIGMS NIH HHS/ -- R01 GM089763-01/GM/NIGMS NIH HHS/ -- R01 GM089763-02/GM/NIGMS NIH HHS/ -- England -- Nature. 2011 Mar 3;471(7336):104-9. doi: 10.1038/nature09732.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, Massachusetts 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21368833" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Apoptosis/drug effects ; Benzenesulfonates/pharmacology ; Biphenyl Compounds/pharmacology ; Cell Cycle Proteins/genetics/*metabolism ; Cell Line, Tumor ; F-Box Proteins/genetics/*metabolism ; Glycogen Synthase Kinase 3/metabolism ; Humans ; Mice ; Molecular Sequence Data ; Myeloid Cell Leukemia Sequence 1 Protein ; Niacinamide/analogs & derivatives ; Nitrophenols/pharmacology ; Phenylurea Compounds ; Phosphorylation ; Piperazines/pharmacology ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/pathology ; Protein Binding/drug effects ; Proto-Oncogene Proteins c-bcl-2/antagonists & inhibitors/*chemistry/*metabolism ; Pyridines/pharmacology ; SKP Cullin F-Box Protein Ligases/*chemistry/*metabolism ; Sulfonamides/pharmacology ; Tumor Suppressor Proteins/deficiency/genetics/metabolism ; Ubiquitin-Protein Ligases/deficiency/genetics/*metabolism ; *Ubiquitination/drug effects
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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