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  • Articles  (88)
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  • Articles  (88)
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  • American Association for the Advancement of Science (AAAS)  (88)
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  • 1
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    Interfollicular epidermal stem cells self-renew via autocrine Wnt signaling (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-12-07
    Description: The skin is a classical example of a tissue maintained by stem cells. However, the identity of the stem cells that maintain the interfollicular epidermis and the source of the signals that control their activity remain unclear. Using mouse lineage tracing and quantitative clonal analyses, we showed that the Wnt target gene Axin2 marks interfollicular epidermal stem cells. These Axin2-expressing cells constitute the majority of the basal epidermal layer, compete neutrally, and require Wnt/beta-catenin signaling to proliferate. The same cells contribute robustly to wound healing, with no requirement for a quiescent stem cell subpopulation. By means of double-labeling RNA in situ hybridization in mice, we showed that the Axin2-expressing cells themselves produce Wnt signals as well as long-range secreted Wnt inhibitors, suggesting an autocrine mechanism of stem cell self-renewal.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4081860/" 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/PMC4081860/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lim, Xinhong -- Tan, Si Hui -- Koh, Winston Lian Chye -- Chau, Rosanna Man Wah -- Yan, Kelley S -- Kuo, Calvin J -- van Amerongen, Renee -- Klein, Allon Moshe -- Nusse, Roel -- 1R01DK085720/DK/NIDDK NIH HHS/ -- 1U01DK085527/DK/NIDDK NIH HHS/ -- 5K08DK096048/DK/NIDDK NIH HHS/ -- K08 DK096048/DK/NIDDK NIH HHS/ -- P30 DK026743/DK/NIDDK NIH HHS/ -- R01 DK085720/DK/NIDDK NIH HHS/ -- U01 DK085527/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Dec 6;342(6163):1226-30. doi: 10.1126/science.1239730.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Developmental Biology, Howard Hughes Medical Institute (HHMI), Institute for Stem Cell Biology and Regenerative Medicine, School of Medicine, Stanford University, Stanford, CA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24311688" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Autocrine Communication ; Axin Protein/genetics/metabolism ; Cell Differentiation ; Cell Lineage ; Cell Proliferation ; Cells, Cultured ; Epidermis/*cytology/injuries/metabolism ; Epithelial Cells/cytology/metabolism ; Gene Expression ; Homeostasis ; Humans ; Intercellular Signaling Peptides and Proteins/metabolism ; Keratinocytes/cytology/metabolism ; Mice ; Regeneration ; Skin/injuries ; Stem Cell Niche ; Stem Cells/cytology/*physiology ; Wnt Proteins/metabolism ; *Wnt Signaling Pathway ; Wound Healing ; beta Catenin/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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  • 2
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    B cells use mechanical energy to discriminate antigen affinities (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-05-21
    Description: The generation of high-affinity antibodies depends on the ability of B cells to extract antigens from the surfaces of antigen-presenting cells. B cells that express high-affinity B cell receptors (BCRs) acquire more antigen and obtain better T cell help. However, the mechanisms by which B cells extract antigen remain unclear. Using fluid and flexible membrane substrates to mimic antigen-presenting cells, we showed that B cells acquire antigen by dynamic myosin IIa-mediated contractions that pull out and invaginate the presenting membranes. The forces generated by myosin IIa contractions ruptured most individual BCR-antigen bonds and promoted internalization of only high-affinity, multivalent BCR microclusters. Thus, B cell contractility contributes to affinity discrimination by mechanically testing the strength of antigen binding.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3713314/" 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/PMC3713314/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Natkanski, Elizabeth -- Lee, Wing-Yiu -- Mistry, Bhakti -- Casal, Antonio -- Molloy, Justin E -- Tolar, Pavel -- MC_U117570592/Medical Research Council/United Kingdom -- MC_U117597138/Medical Research Council/United Kingdom -- U117570592/Medical Research Council/United Kingdom -- U117597138/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2013 Jun 28;340(6140):1587-90. doi: 10.1126/science.1237572. Epub 2013 May 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Immune Cell Biology, MRC National Institute for Medical Research, Mill Hill, London NW7 1AA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23686338" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Antibody Affinity ; *Antigen Presentation ; Antigens/*immunology ; B-Lymphocytes/*immunology ; Cells, Cultured ; Mechanical Processes ; Mice ; Mice, Inbred C57BL ; Microscopy, Atomic Force ; Nonmuscle Myosin Type IIA/*physiology ; Receptors, Antigen, B-Cell/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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  • 3
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    Targeted inhibition of mutant IDH2 in leukemia cells induces cellular differentiation (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-04-06
    Description: A number of human cancers harbor somatic point mutations in the genes encoding isocitrate dehydrogenases 1 and 2 (IDH1 and IDH2). These mutations alter residues in the enzyme active sites and confer a gain-of-function in cancer cells, resulting in the accumulation and secretion of the oncometabolite (R)-2-hydroxyglutarate (2HG). We developed a small molecule, AGI-6780, that potently and selectively inhibits the tumor-associated mutant IDH2/R140Q. A crystal structure of AGI-6780 complexed with IDH2/R140Q revealed that the inhibitor binds in an allosteric manner at the dimer interface. The results of steady-state enzymology analysis were consistent with allostery and slow-tight binding by AGI-6780. Treatment with AGI-6780 induced differentiation of TF-1 erythroleukemia and primary human acute myelogenous leukemia cells in vitro. These data provide proof-of-concept that inhibitors targeting mutant IDH2/R140Q could have potential applications as a differentiation therapy for cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Fang -- Travins, Jeremy -- DeLaBarre, Byron -- Penard-Lacronique, Virginie -- Schalm, Stefanie -- Hansen, Erica -- Straley, Kimberly -- Kernytsky, Andrew -- Liu, Wei -- Gliser, Camelia -- Yang, Hua -- Gross, Stefan -- Artin, Erin -- Saada, Veronique -- Mylonas, Elena -- Quivoron, Cyril -- Popovici-Muller, Janeta -- Saunders, Jeffrey O -- Salituro, Francesco G -- Yan, Shunqi -- Murray, Stuart -- Wei, Wentao -- Gao, Yi -- Dang, Lenny -- Dorsch, Marion -- Agresta, Sam -- Schenkein, David P -- Biller, Scott A -- Su, Shinsan M -- de Botton, Stephane -- Yen, Katharine E -- New York, N.Y. -- Science. 2013 May 3;340(6132):622-6. doi: 10.1126/science.1234769. Epub 2013 Apr 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Agios Pharmaceuticals, Cambridge, MA 02139-4169, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23558173" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Site ; Antineoplastic Agents/chemistry/metabolism/pharmacology ; Catalytic Domain ; Cell Line, Tumor ; Cell Proliferation ; Cells, Cultured ; Crystallography, X-Ray ; Enzyme Inhibitors/chemistry/metabolism/*pharmacology ; Erythropoiesis/drug effects ; Gene Expression Regulation, Leukemic ; Glutarates/metabolism ; Hematopoiesis/*drug effects ; Humans ; Isocitrate Dehydrogenase/*antagonists & inhibitors/chemistry/*genetics/metabolism ; Leukemia, Erythroblastic, Acute ; Leukemia, Myeloid, Acute/drug therapy/*enzymology/genetics/pathology ; Molecular Targeted Therapy ; Mutant Proteins/antagonists & inhibitors/chemistry/metabolism ; Phenylurea Compounds/chemistry/metabolism/*pharmacology ; Point Mutation ; Protein Multimerization ; Protein Structure, Secondary ; Small Molecule Libraries ; Sulfonamides/chemistry/metabolism/*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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  • 4
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    Erythropoietin derived by chemical synthesis (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-12-18
    Description: Erythropoietin is a signaling glycoprotein that controls the fundamental process of erythropoiesis, orchestrating the production and maintenance of red blood cells. As administrated clinically, erythropoietin has a polypeptide backbone with complex dishomogeneity in its carbohydrate domains. Here we describe the total synthesis of homogeneous erythropoietin with consensus carbohydrate domains incorporated at all of the native glycosylation sites. The oligosaccharide sectors were built by total synthesis and attached stereospecifically to peptidyl fragments of the wild-type primary sequence, themselves obtained by solid-phase peptide synthesis. The glycopeptidyl constructs were joined by chemical ligation, followed by metal-free dethiylation, and subsequently folded. This homogeneous erythropoietin glycosylated at the three wild-type aspartates with N-linked high-mannose sialic acid-containing oligosaccharides and O-linked glycophorin exhibits Procrit-level in vivo activity in mice.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4080428/" 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/PMC4080428/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Ping -- Dong, Suwei -- Shieh, Jae-Hung -- Peguero, Elizabeth -- Hendrickson, Ronald -- Moore, Malcolm A S -- Danishefsky, Samuel J -- HL025848/HL/NHLBI NIH HHS/ -- P30 CA008748/CA/NCI NIH HHS/ -- R01 GM109760/GM/NIGMS NIH HHS/ -- R01 HL025848/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2013 Dec 13;342(6164):1357-60. doi: 10.1126/science.1245095.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24337294" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Aspartic Acid/chemistry ; Cells, Cultured ; Consensus Sequence ; Dose-Response Relationship, Drug ; Erythrocyte Count ; Erythropoietin/*administration & dosage/*chemical synthesis/chemistry ; Glycophorin/chemistry ; Glycosylation ; Injections, Subcutaneous ; Mannose/chemistry ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; N-Acetylneuraminic Acid/chemistry ; Oligosaccharides/chemistry ; Reticulocytes/drug effects
    Print ISSN: 0036-8075
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  • 5
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    An erythroid enhancer of BCL11A subject to genetic variation determines fetal hemoglobin level (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-10-12
    Description: Genome-wide association studies (GWASs) have ascertained numerous trait-associated common genetic variants, frequently localized to regulatory DNA. We found that common genetic variation at BCL11A associated with fetal hemoglobin (HbF) level lies in noncoding sequences decorated by an erythroid enhancer chromatin signature. Fine-mapping uncovers a motif-disrupting common variant associated with reduced transcription factor (TF) binding, modestly diminished BCL11A expression, and elevated HbF. The surrounding sequences function in vivo as a developmental stage-specific, lineage-restricted enhancer. Genome engineering reveals the enhancer is required in erythroid but not B-lymphoid cells for BCL11A expression. These findings illustrate how GWASs may expose functional variants of modest impact within causal elements essential for appropriate gene expression. We propose the GWAS-marked BCL11A enhancer represents an attractive target for therapeutic genome engineering for the beta-hemoglobinopathies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4018826/" 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/PMC4018826/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bauer, Daniel E -- Kamran, Sophia C -- Lessard, Samuel -- Xu, Jian -- Fujiwara, Yuko -- Lin, Carrie -- Shao, Zhen -- Canver, Matthew C -- Smith, Elenoe C -- Pinello, Luca -- Sabo, Peter J -- Vierstra, Jeff -- Voit, Richard A -- Yuan, Guo-Cheng -- Porteus, Matthew H -- Stamatoyannopoulos, John A -- Lettre, Guillaume -- Orkin, Stuart H -- 123382/Canadian Institutes of Health Research/Canada -- K08 DK093705/DK/NIDDK NIH HHS/ -- K08DK093705/DK/NIDDK NIH HHS/ -- P01HL032262/HL/NHLBI NIH HHS/ -- P30 DK049216/DK/NIDDK NIH HHS/ -- P30DK049216/DK/NIDDK NIH HHS/ -- R01 HG005085/HG/NHGRI NIH HHS/ -- R01 HL032259/HL/NHLBI NIH HHS/ -- R01HL032259/HL/NHLBI NIH HHS/ -- U54HG004594/HG/NHGRI NIH HHS/ -- U54HG007010/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Oct 11;342(6155):253-7. doi: 10.1126/science.1242088.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24115442" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carrier Proteins/*genetics ; Cell Line, Tumor ; Cells, Cultured ; Chromatin/genetics/metabolism ; Chromatin Immunoprecipitation ; Chromosome Mapping ; *Enhancer Elements, Genetic ; Erythroid Cells/*metabolism ; Fetal Hemoglobin/*biosynthesis/genetics ; *Gene Expression Regulation ; Gene Targeting ; Genetic Engineering ; Genetic Variation ; Genome-Wide Association Study ; Hemoglobinopathies/*genetics/therapy ; Humans ; Mice ; Nuclear Proteins/*genetics ; Precursor Cells, B-Lymphoid/metabolism ; Transcription Factors/genetics/metabolism
    Print ISSN: 0036-8075
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  • 6
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    Mice genetically deficient in vasopressin V1a and V1b receptors are resistant to jet lag (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-10-05
    Description: Jet-lag symptoms arise from temporal misalignment between the internal circadian clock and external solar time. We found that circadian rhythms of behavior (locomotor activity), clock gene expression, and body temperature immediately reentrained to phase-shifted light-dark cycles in mice lacking vasopressin receptors V1a and V1b (V1a(-/-)V1b(-/-)). Nevertheless, the behavior of V1a(-/-)V1b(-/-) mice was still coupled to the internal clock, which oscillated normally under standard conditions. Experiments with suprachiasmatic nucleus (SCN) slices in culture suggested that interneuronal communication mediated by V1a and V1b confers on the SCN an intrinsic resistance to external perturbation. Pharmacological blockade of V1a and V1b in the SCN of wild-type mice resulted in accelerated recovery from jet lag, which highlights the potential of vasopressin signaling as a therapeutic target for management of circadian rhythm misalignment, such as jet lag and shift work.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yamaguchi, Yoshiaki -- Suzuki, Toru -- Mizoro, Yasutaka -- Kori, Hiroshi -- Okada, Kazuki -- Chen, Yulin -- Fustin, Jean-Michel -- Yamazaki, Fumiyoshi -- Mizuguchi, Naoki -- Zhang, Jing -- Dong, Xin -- Tsujimoto, Gozoh -- Okuno, Yasushi -- Doi, Masao -- Okamura, Hitoshi -- New York, N.Y. -- Science. 2013 Oct 4;342(6154):85-90. doi: 10.1126/science.1238599.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24092737" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antidiuretic Hormone Receptor Antagonists ; Body Temperature/genetics ; CLOCK Proteins/genetics ; Cell Communication/drug effects/genetics ; Cells, Cultured ; Circadian Rhythm/genetics ; Gene Expression Regulation ; Jet Lag Syndrome/*genetics/physiopathology ; Mice ; Mice, Knockout ; Motor Activity/genetics ; Receptors, Vasopressin/*genetics ; Suprachiasmatic Nucleus/physiopathology
    Print ISSN: 0036-8075
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  • 7
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    53BP1 regulates DSB repair using Rif1 to control 5' end resection (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-01-12
    Description: The choice between double-strand break (DSB) repair by either homology-directed repair (HDR) or nonhomologous end joining (NHEJ) is tightly regulated. Defects in this regulation can induce genome instability and cancer. 53BP1 is critical for the control of DSB repair, promoting NHEJ, and inhibiting the 5' end resection needed for HDR. Using dysfunctional telomeres and genome-wide DSBs, we identify Rif1 as the main factor used by 53BP1 to impair 5' end resection. Rif1 inhibits resection involving CtIP, BLM, and Exo1; limits accumulation of BRCA1/BARD1 complexes at sites of DNA damage; and defines one of the mechanisms by which 53BP1 causes chromosomal abnormalities in Brca1-deficient cells. These data establish Rif1 as an important contributor to the control of DSB repair by 53BP1.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664841/" 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/PMC3664841/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zimmermann, Michal -- Lottersberger, Francisca -- Buonomo, Sara B -- Sfeir, Agnel -- de Lange, Titia -- R37 GM049046/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2013 Feb 8;339(6120):700-4. doi: 10.1126/science.1231573. Epub 2013 Jan 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Cell Biology and Genetics, Rockefeller University, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23306437" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; BRCA1 Protein/metabolism ; Cells, Cultured ; Chromosomal Proteins, Non-Histone/chemistry/genetics/*metabolism ; DNA/metabolism ; *DNA Breaks, Double-Stranded ; DNA End-Joining Repair ; *DNA Repair ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Mice ; Replication Protein A/metabolism ; Telomere/*metabolism ; Telomere-Binding Proteins/*metabolism ; Telomeric Repeat Binding Protein 2/genetics/metabolism
    Print ISSN: 0036-8075
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  • 8
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    Rif1 prevents resection of DNA breaks and promotes immunoglobulin class switching (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-01-12
    Description: DNA double-strand breaks (DSBs) represent a threat to the genome because they can lead to the loss of genetic information and chromosome rearrangements. The DNA repair protein p53 binding protein 1 (53BP1) protects the genome by limiting nucleolytic processing of DSBs by a mechanism that requires its phosphorylation, but whether 53BP1 does so directly is not known. Here, we identify Rap1-interacting factor 1 (Rif1) as an ATM (ataxia-telangiectasia mutated) phosphorylation-dependent interactor of 53BP1 and show that absence of Rif1 results in 5'-3' DNA-end resection in mice. Consistent with enhanced DNA resection, Rif1 deficiency impairs DNA repair in the G(1) and S phases of the cell cycle, interferes with class switch recombination in B lymphocytes, and leads to accumulation of chromosome DSBs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3815530/" 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/PMC3815530/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Di Virgilio, Michela -- Callen, Elsa -- Yamane, Arito -- Zhang, Wenzhu -- Jankovic, Mila -- Gitlin, Alexander D -- Feldhahn, Niklas -- Resch, Wolfgang -- Oliveira, Thiago Y -- Chait, Brian T -- Nussenzweig, Andre -- Casellas, Rafael -- Robbiani, Davide F -- Nussenzweig, Michel C -- AI037526/AI/NIAID NIH HHS/ -- GM007739/GM/NIGMS NIH HHS/ -- GM103314/GM/NIGMS NIH HHS/ -- R01 AI037526/AI/NIAID NIH HHS/ -- RR00862/RR/NCRR NIH HHS/ -- RR022220/RR/NCRR NIH HHS/ -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2013 Feb 8;339(6120):711-5. doi: 10.1126/science.1230624. Epub 2013 Jan 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunology, The Rockefeller University, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23306439" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ataxia Telangiectasia Mutated Proteins ; B-Lymphocytes/immunology/metabolism ; Cell Cycle Proteins/antagonists & inhibitors/metabolism ; Cells, Cultured ; Chromosomal Proteins, Non-Histone/*metabolism ; DNA/*metabolism ; *DNA Breaks, Double-Stranded ; DNA Repair ; DNA-Binding Proteins/antagonists & inhibitors/*metabolism ; G1 Phase ; G2 Phase ; Genomic Instability ; *Immunoglobulin Class Switching ; Mice ; Phosphorylation ; Protein-Serine-Threonine Kinases/antagonists & inhibitors/metabolism ; S Phase ; Telomere-Binding Proteins/*metabolism ; Tumor Suppressor Proteins/antagonists & inhibitors/metabolism
    Print ISSN: 0036-8075
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  • 9
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    Neuroscience. Neural stem cells, excited (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-03-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hsieh, Jenny -- Schneider, Jay W -- New York, N.Y. -- Science. 2013 Mar 29;339(6127):1534-5. doi: 10.1126/science.1237576.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. jenny.hsieh@utsouthwestern.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23539589" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*cytology/*physiology ; Calcium Channels/physiology ; Cells, Cultured ; Humans ; Neural Stem Cells/*physiology ; *Neurogenesis ; Receptors, N-Methyl-D-Aspartate/physiology ; *Synaptic Transmission ; gamma-Aminobutyric Acid/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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  • 10
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    Evidence for a common mechanism of SIRT1 regulation by allosteric activators (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-03-09
    Description: A molecule that treats multiple age-related diseases would have a major impact on global health and economics. The SIRT1 deacetylase has drawn attention in this regard as a target for drug design. Yet controversy exists around the mechanism of sirtuin-activating compounds (STACs). We found that specific hydrophobic motifs found in SIRT1 substrates such as PGC-1alpha and FOXO3a facilitate SIRT1 activation by STACs. A single amino acid in SIRT1, Glu(230), located in a structured N-terminal domain, was critical for activation by all previously reported STAC scaffolds and a new class of chemically distinct activators. In primary cells reconstituted with activation-defective SIRT1, the metabolic effects of STACs were blocked. Thus, SIRT1 can be directly activated through an allosteric mechanism common to chemically diverse STACs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3799917/" 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/PMC3799917/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hubbard, Basil P -- Gomes, Ana P -- Dai, Han -- Li, Jun -- Case, April W -- Considine, Thomas -- Riera, Thomas V -- Lee, Jessica E -- E, Sook Yen -- Lamming, Dudley W -- Pentelute, Bradley L -- Schuman, Eli R -- Stevens, Linda A -- Ling, Alvin J Y -- Armour, Sean M -- Michan, Shaday -- Zhao, Huizhen -- Jiang, Yong -- Sweitzer, Sharon M -- Blum, Charles A -- Disch, Jeremy S -- Ng, Pui Yee -- Howitz, Konrad T -- Rolo, Anabela P -- Hamuro, Yoshitomo -- Moss, Joel -- Perni, Robert B -- Ellis, James L -- Vlasuk, George P -- Sinclair, David A -- P01 AG027916/AG/NIA NIH HHS/ -- R01 AG019719/AG/NIA NIH HHS/ -- R01 AG028730/AG/NIA NIH HHS/ -- R37 AG028730/AG/NIA NIH HHS/ -- ZIA HL000659-20/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2013 Mar 8;339(6124):1216-9. doi: 10.1126/science.1231097.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23471411" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Amino Acid Motifs ; Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Cells, Cultured ; Enzyme Activation ; Forkhead Transcription Factors/chemistry/genetics ; Glutamic Acid/chemistry/genetics ; Heterocyclic Compounds with 4 or More Rings/chemistry/pharmacology ; Humans ; Hydrophobic and Hydrophilic Interactions ; Mice ; Molecular Sequence Data ; Myoblasts/drug effects/enzymology ; Protein Structure, Tertiary ; Sirtuin 1/*chemistry/genetics/*metabolism ; Stilbenes/chemistry/*pharmacology ; Substrate Specificity
    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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