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  • 1
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    Climatic characteristics and regionalization of fogs in China (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-02-14
    Description: Using trend coefficient method, vector analysis method, and monitored meteorological data across China, climatic characteristics and spatial pattern of fogs in China were investigated. The results show that most fogs occur in southeastern China. Thin fogs usually occur in fog-rare regions and dense fogs take place in fog-prone regions. The number of annual fog days in most regions of China exhibits a decreasing trend from 1980 to 2010. It also found that the regions with more fog days correspond to the lower concentration degree of fogs, and vice versa. In terms of the national scale, the concentration periods of fogs are mainly in November, December, and January in China. We further classified the occurrence frequencies of fogs into five spatial distribution patterns over a single year according to the spatial distribution characteristics of fogs occurrence frequencies of 36 dekads, namely, a whole year can be correspondingly divided into five phases. Based on this, multi-year ...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 2
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    Mapping TF interactome by HaloTag protein arrays [Plant Biology] (2016)
    National Academy of Sciences
    Details
    Publication Date: 2016-07-21
    Description: Protein microarrays enable investigation of diverse biochemical properties for thousands of proteins in a single experiment, an unparalleled capacity. Using a high-density system called HaloTag nucleic acid programmable protein array (HaloTag-NAPPA), we created high-density protein arrays comprising 12,000 Arabidopsis ORFs. We used these arrays to query protein–protein interactions for a...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 3
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    Understanding of sub-band gap absorption of femtosecond-laser sulfur hyperdoped silicon using synchrotron-based techniques (2015)
    Springer Nature
    Details
    Publication Date: 2015-06-23
    Description: The correlation between sub-band gap absorption and the chemical states and electronic and atomic structures of S-hyperdoped Si have been extensively studied, using synchrotron-based x-ray photoelectron spectroscopy (XPS), x-ray absorption near-edge spectroscopy (XANES), extended x-ray absorption fine structure (EXAFS), valence-band photoemission spectroscopy (VB-PES) and first-principles calculation. S 2p XPS spectra reveal that the S-hyperdoped Si with the greatest (~87%) sub-band gap absorption contains the highest concentration of S2− (monosulfide) species. Annealing S-hyperdoped Si reduces the sub-band gap absorptance and the concentration of S2− species, but significantly increases the concentration of larger S clusters [polysulfides (Sn2−, n 〉 2)]. The Si K-edge XANES spectra show that S hyperdoping in Si increases (decreased) the occupied (unoccupied) electronic density of states at/above the conduction-band-minimum. VB-PES spectra evidently reveal that the S-dopants not only form an impurity band deep within the band gap, giving rise to the sub-band gap absorption, but also cause the insulator-to-metal transition in S-hyperdoped Si samples. Based on the experimental results and the calculations by density functional theory, the chemical state of the S species and the formation of the S-dopant states in the band gap of Si are critical in determining the sub-band gap absorptance of hyperdoped Si samples. Scientific Reports 5 doi: 10.1038/srep11466
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Springer Nature
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  • 4
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    Human Pompe disease-induced pluripotent stem cells for pathogenesis modeling, drug testing and disease marker identification (2012)
    Oxford University Press
    Details
    Publication Date: 2012-05-11
    Print ISSN: 0964-6906
    Electronic ISSN: 1460-2083
    Topics: Biology , Medicine
    Published by Oxford University Press
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  • 5
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    Morphine drives internal ribosome entry site-mediated hnRNP K translation in neurons through opioid receptor-dependent signaling (2014)
    Oxford University Press
    Details
    Publication Date: 2014-11-28
    Description: Heterogeneous nuclear ribonucleoprotein K (hnRNP K) binds to the promoter region of mu-opioid receptor (MOR) to regulate its transcriptional activity. How hnRNP K contributes to the analgesic effects of morphine, however, is largely unknown. We provide evidence that morphine increases hnRNP K protein expression via MOR activation in rat primary cortical neurons and HEK-293 cells expressing MORs, without increasing mRNA levels. Using the bicistronic reporter assay, we examined whether morphine-mediated accumulation of hnRNP K resulted from translational control. We identified potential internal ribosome entry site elements located in the 5' untranslated regions of hnRNP K transcripts that were regulated by morphine. This finding suggests that internal translation contributes to the morphine-induced accumulation of hnRNP K protein in regions of the central nervous system correlated with nociceptive and antinociceptive modulatory systems in mice. Finally, we found that down-regulation of hnRNP K mediated by siRNA attenuated morphine-induced hyperpolarization of membrane potential in AtT20 cells. Silencing hnRNP K expression in the spinal cord increased nociceptive sensitivity in wild-type mice, but not in MOR-knockout mice. Thus, our findings identify the role of translational control of hnRNP K in morphine-induced analgesia through activation of MOR.
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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  • 6
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    Conformation of trimeric HIV-1 gp140 [Biochemistry] (2014)
    National Academy of Sciences
    Details
    Publication Date: 2014-12-31
    Description: The HIV-1 envelope spike [trimeric (gp160)3, cleaved to (gp120/gp41)3] is the mediator of viral entry and the principal target of humoral immune response to the virus. Production of a recombinant preparation that represents the functional spike poses a challenge for vaccine development, because the (gp120/gp41)3 complex is prone to dissociation....
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 7
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    The genetic basis of early T-cell precursor acute lymphoblastic leukaemia (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-01-13
    Description: Early T-cell precursor acute lymphoblastic leukaemia (ETP ALL) is an aggressive malignancy of unknown genetic basis. We performed whole-genome sequencing of 12 ETP ALL cases and assessed the frequency of the identified somatic mutations in 94 T-cell acute lymphoblastic leukaemia cases. ETP ALL was characterized by activating mutations in genes regulating cytokine receptor and RAS signalling (67% of cases; NRAS, KRAS, FLT3, IL7R, JAK3, JAK1, SH2B3 and BRAF), inactivating lesions disrupting haematopoietic development (58%; GATA3, ETV6, RUNX1, IKZF1 and EP300) and histone-modifying genes (48%; EZH2, EED, SUZ12, SETD2 and EP300). We also identified new targets of recurrent mutation including DNM2, ECT2L and RELN. The mutational spectrum is similar to myeloid tumours, and moreover, the global transcriptional profile of ETP ALL was similar to that of normal and myeloid leukaemia haematopoietic stem cells. These findings suggest that addition of myeloid-directed therapies might improve the poor outcome of ETP ALL.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3267575/" 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/PMC3267575/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Jinghui -- Ding, Li -- Holmfeldt, Linda -- Wu, Gang -- Heatley, Sue L -- Payne-Turner, Debbie -- Easton, John -- Chen, Xiang -- Wang, Jianmin -- Rusch, Michael -- Lu, Charles -- Chen, Shann-Ching -- Wei, Lei -- Collins-Underwood, J Racquel -- Ma, Jing -- Roberts, Kathryn G -- Pounds, Stanley B -- Ulyanov, Anatoly -- Becksfort, Jared -- Gupta, Pankaj -- Huether, Robert -- Kriwacki, Richard W -- Parker, Matthew -- McGoldrick, Daniel J -- Zhao, David -- Alford, Daniel -- Espy, Stephen -- Bobba, Kiran Chand -- Song, Guangchun -- Pei, Deqing -- Cheng, Cheng -- Roberts, Stefan -- Barbato, Michael I -- Campana, Dario -- Coustan-Smith, Elaine -- Shurtleff, Sheila A -- Raimondi, Susana C -- Kleppe, Maria -- Cools, Jan -- Shimano, Kristin A -- Hermiston, Michelle L -- Doulatov, Sergei -- Eppert, Kolja -- Laurenti, Elisa -- Notta, Faiyaz -- Dick, John E -- Basso, Giuseppe -- Hunger, Stephen P -- Loh, Mignon L -- Devidas, Meenakshi -- Wood, Brent -- Winter, Stuart -- Dunsmore, Kimberley P -- Fulton, Robert S -- Fulton, Lucinda L -- Hong, Xin -- Harris, Christopher C -- Dooling, David J -- Ochoa, Kerri -- Johnson, Kimberly J -- Obenauer, John C -- Evans, William E -- Pui, Ching-Hon -- Naeve, Clayton W -- Ley, Timothy J -- Mardis, Elaine R -- Wilson, Richard K -- Downing, James R -- Mullighan, Charles G -- CA114766/CA/NCI NIH HHS/ -- CA98413/CA/NCI NIH HHS/ -- CA98543/CA/NCI NIH HHS/ -- P30 CA021765/CA/NCI NIH HHS/ -- P30 CA021765-33/CA/NCI NIH HHS/ -- P30CA021765/CA/NCI NIH HHS/ -- U01GM92666/GM/NIGMS NIH HHS/ -- U54 HG003079/HG/NHGRI NIH HHS/ -- England -- Nature. 2012 Jan 11;481(7380):157-63. doi: 10.1038/nature10725.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Computational Biology and Bioinformatics, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22237106" target="_blank"〉PubMed〈/a〉
    Keywords: Age of Onset ; Child ; DNA Copy Number Variations/genetics ; Genes, ras/genetics ; Genetic Predisposition to Disease/*genetics ; Genome, Human/genetics ; Genomics ; Hematopoiesis/genetics ; Histones/metabolism ; Humans ; Janus Kinases/genetics/metabolism ; Leukemia, Myeloid, Acute/drug therapy/genetics/pathology ; Molecular Sequence Data ; Mutation/*genetics ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/drug therapy/*genetics/pathology ; Receptors, Interleukin-7/genetics ; Sequence Analysis, DNA ; Signal Transduction/genetics ; Stem Cells/metabolism/pathology ; T-Lymphocytes/metabolism/pathology ; Translocation, Genetic/genetics
    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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  • 8
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    Loss of oncogenic Notch1 with resistance to a PI3K inhibitor in T-cell leukaemia (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-07-22
    Description: Mutations that deregulate Notch1 and Ras/phosphoinositide 3 kinase (PI3K)/Akt signalling are prevalent in T-cell acute lymphoblastic leukaemia (T-ALL), and often coexist. Here we show that the PI3K inhibitor GDC-0941 is active against primary T-ALLs from wild-type and Kras(G12D) mice, and addition of the MEK inhibitor PD0325901 increases its efficacy. Mice invariably relapsed after treatment with drug-resistant clones, most of which unexpectedly had reduced levels of activated Notch1 protein, downregulated many Notch1 target genes, and exhibited cross-resistance to gamma-secretase inhibitors. Multiple resistant primary T-ALLs that emerged in vivo did not contain somatic Notch1 mutations present in the parental leukaemia. Importantly, resistant clones upregulated PI3K signalling. Consistent with these data, inhibiting Notch1 activated the PI3K pathway, providing a likely mechanism for selection against oncogenic Notch1 signalling. These studies validate PI3K as a therapeutic target in T-ALL and raise the unexpected possibility that dual inhibition of PI3K and Notch1 signalling could promote drug resistance in T-ALL.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4213126/" 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/PMC4213126/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dail, Monique -- Wong, Jason -- Lawrence, Jessica -- O'Connor, Daniel -- Nakitandwe, Joy -- Chen, Shann-Ching -- Xu, Jin -- Lee, Leslie B -- Akagi, Keiko -- Li, Qing -- Aster, Jon C -- Pear, Warren S -- Downing, James R -- Sampath, Deepak -- Shannon, Kevin -- K08 CA134649/CA/NCI NIH HHS/ -- K99 CA157950/CA/NCI NIH HHS/ -- P01 CA119070/CA/NCI NIH HHS/ -- P30 CA021765/CA/NCI NIH HHS/ -- R01 CA180037/CA/NCI NIH HHS/ -- R37 CA072614/CA/NCI NIH HHS/ -- R37 CA72614/CA/NCI NIH HHS/ -- U01 CA084221/CA/NCI NIH HHS/ -- England -- Nature. 2014 Sep 25;513(7519):512-6. doi: 10.1038/nature13495. Epub 2014 Jul 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics and Benniof Children's Hospital, University of California, San Francisco, California 94143, USA. ; Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA. ; Department of Translational Oncology, Genentech Inc., South San Francisco, California 94080, USA. ; Department of Molecular Virology, Immunology and Medical Genetics, Ohio State University, Columbus, Ohio 43210, USA. ; Division of Haematology/Oncology, Department of Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA. ; Department of Pathology, Brigham &Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA. ; Abramson Family Cancer Research Institute and the Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25043004" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzamides/pharmacology/therapeutic use ; Clone Cells/drug effects/metabolism/pathology ; Diphenylamine/analogs & derivatives/pharmacology/therapeutic use ; Down-Regulation/drug effects ; *Drug Resistance, Neoplasm/drug effects/genetics ; Drug Synergism ; Genes, ras/genetics ; Indazoles/*pharmacology/therapeutic use ; Male ; Mice ; Mice, Inbred C57BL ; Mitogen-Activated Protein Kinase Kinases/antagonists & inhibitors ; Phosphatidylinositol 3-Kinases/*antagonists & inhibitors ; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/*drug ; therapy/*genetics/metabolism/pathology ; Protein Kinase Inhibitors/*pharmacology/therapeutic use ; Protein Structure, Tertiary ; Proto-Oncogene Proteins c-akt/metabolism ; Receptor, Notch1/chemistry/deficiency/genetics/*metabolism ; Signal Transduction/drug effects ; Sulfonamides/*pharmacology/therapeutic use
    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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  • 9
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    Oncogenic Nras has bimodal effects on stem cells that sustainably increase competitiveness (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-11-29
    Description: 'Pre-leukaemic' mutations are thought to promote clonal expansion of haematopoietic stem cells (HSCs) by increasing self-renewal and competitiveness; however, mutations that increase HSC proliferation tend to reduce competitiveness and self-renewal potential, raising the question of how a mutant HSC can sustainably outcompete wild-type HSCs. Activating mutations in NRAS are prevalent in human myeloproliferative neoplasms and leukaemia. Here we show that a single allele of oncogenic Nras(G12D) increases HSC proliferation but also increases reconstituting and self-renewal potential upon serial transplantation in irradiated mice, all prior to leukaemia initiation. Nras(G12D) also confers long-term self-renewal potential to multipotent progenitors. To explore the mechanism by which Nras(G12D) promotes HSC proliferation and self-renewal, we assessed cell-cycle kinetics using H2B-GFP label retention and 5-bromodeoxyuridine (BrdU) incorporation. Nras(G12D) had a bimodal effect on HSCs, increasing the frequency with which some HSCs divide and reducing the frequency with which others divide. This mirrored bimodal effects on reconstituting potential, as rarely dividing Nras(G12D) HSCs outcompeted wild-type HSCs, whereas frequently dividing Nras(G12D) HSCs did not. Nras(G12D) caused these effects by promoting STAT5 signalling, inducing different transcriptional responses in different subsets of HSCs. One signal can therefore increase HSC proliferation, competitiveness and self-renewal through bimodal effects on HSC gene expression, cycling and reconstituting potential.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4128640/" 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/PMC4128640/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Qing -- Bohin, Natacha -- Wen, Tiffany -- Ng, Victor -- Magee, Jeffrey -- Chen, Shann-Ching -- Shannon, Kevin -- Morrison, Sean J -- K08 CA134649/CA/NCI NIH HHS/ -- K08-CA-134649/CA/NCI NIH HHS/ -- R37 CA072614/CA/NCI NIH HHS/ -- T32 CA128583/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2013 Dec 5;504(7478):143-7. doi: 10.1038/nature12830. Epub 2013 Nov 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24284627" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow Transplantation ; Cell Proliferation ; Gene Expression Profiling ; Genes, ras/*genetics ; Hematopoietic Stem Cells/*cytology/*metabolism ; Mice ; Mice, Inbred C57BL ; Time Factors
    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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  • 10
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    Fast molecular outflow from a dusty star-forming galaxy in the early Universe (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-09-07
    Description: Galaxies grow inefficiently, with only a small percentage of the available gas converted into stars each free-fall time. Feedback processes, such as outflowing winds driven by radiation pressure, supernovae, or supermassive black hole accretion, can act to halt star formation if they heat or expel the gas supply. We report a molecular outflow launched from a dust-rich star-forming galaxy at redshift 5.3, 1 billion years after the Big Bang. The outflow reaches velocities up to 800 kilometers per second relative to the galaxy, is resolved into multiple clumps, and carries mass at a rate within a factor of 2 of the star formation rate. Our results show that molecular outflows can remove a large fraction of the gas available for star formation from galaxies at high redshift.
    Keywords: Astronomy
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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