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  • 1
    Publication Date: 2015-05-13
    Description: We report the development of a CaMoO4 crystal low temperature detector for the AMoRE neutrinoless double beta decay search experiment. The prototype detector cell was composed of a 216 g CaMoO4 crystal and a metallic magnetic calorimeter. An overground measurement demonstrated FWHM resolution of 6–11 keV for full absorption gamma peaks. Pulse shape discrimination was clearly demonstrated in the phonon signals, and 7.6  of discrimination power was found for the and separation. The phonon signals showed rise-times of about 1 ms. It is expected that the relatively fast rise-time will increase the rejection efficiency of two-neutrino double beta decay pile-up events which can be one of the major background sources in searches.
    Print ISSN: 1687-7357
    Electronic ISSN: 1687-7365
    Topics: Physics
    Published by Hindawi
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  • 2
    Publication Date: 2013-04-04
    Description: Author(s): E. V. Charnaya, M. K. Lee, Cheng Tien, L. J. Chang, Z.-J. Wu, Yu. A. Kumzerov, and A. S. Bugaev 23 Na NMR studies of the Na-K eutectic alloy embedded into porous glass with 7-nm pores showed that melting of Na 2 K confined nanoparticles is a continuous process with smooth changes in the Knight shift of a narrow resonance line and nuclear spin relaxation between those in the crystalline and liquid... [Phys. Rev. B 87, 155401] Published Wed Apr 03, 2013
    Keywords: Surface physics, nanoscale physics, low-dimensional systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
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  • 3
    Publication Date: 2011-01-11
    Description: Author(s): C. Tien, E. V. Charnaya, D. Y. Xing, A. L. Pirozerskii, Yu. A. Kumzerov, Y. S. Ciou, and M. K. Lee Magnetic properties of a superconducting lead-porous glass composite were studied. The glass pore size was 7 nm. The onset of superconductivity was observed at 7.22 K with complete diamagnetic screening at lower temperatures. Strong magnetic instabilities were found on the magnetization-versus-field... [Phys. Rev. B 83, 014502] Published Mon Jan 10, 2011
    Keywords: Superfluidity and superconductivity
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
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  • 4
    Publication Date: 2013-12-07
    Description: HELQ is a superfamily 2 DNA helicase found in archaea and metazoans. It has been implicated in processing stalled replication forks and in repairing DNA double-strand breaks and inter-strand crosslinks. Though previous studies have suggested the possibility that HELQ is involved in the Fanconi anemia (FA) pathway, a dominant mechanism for inter-strand crosslink repair in vertebrates, this connection remains elusive. Here, we investigated this question in mice using the Helq gt and Fancc – strains . Compared with Fancc – / – mice lacking FANCC, a component of the FA core complex, Helq gt/gt mice exhibited a mild of form of FA-like phenotypes including hypogonadism and cellular sensitivity to the crosslinker mitomycin C. However, unlike Fancc – / – primary fibroblasts, Helq gt/gt cells had intact FANCD2 mono-ubiquitination and focus formation. Notably, for all traits examined, Helq was non-epistatic with Fancc , as Helq gt /gt ;Fancc – / – double mutants displayed significantly worsened phenotypes than either single mutant. Importantly, this was most noticeable for the suppression of spontaneous chromosome instability such as micronuclei and 53BP1 nuclear bodies, known consequences of persistently stalled replication forks. These findings suggest that mammalian HELQ contributes to genome stability in unchallenged conditions through a mechanism distinct from the function of FANCC.
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
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  • 5
    Publication Date: 2014-01-15
    Description: We demonstrate that membrane proteins and phospholipids can self-assemble into polyhedral arrangements suitable for structural analysis. Using the Escherichia coli mechanosensitive channel of small conductance (MscS) as a model protein, we prepared membrane protein polyhedral nanoparticles (MPPNs) with uniform radii of ∼20 nm. Electron cryotomographic analysis established that these MPPNs...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 6
    Publication Date: 2009-07-10
    Description: Recent advances in sequencing technologies have initiated an era of personal genome sequences. To date, human genome sequences have been reported for individuals with ancestry in three distinct geographical regions: a Yoruba African, two individuals of northwest European origin, and a person from China. Here we provide a highly annotated, whole-genome sequence for a Korean individual, known as AK1. The genome of AK1 was determined by an exacting, combined approach that included whole-genome shotgun sequencing (27.8x coverage), targeted bacterial artificial chromosome sequencing, and high-resolution comparative genomic hybridization using custom microarrays featuring more than 24 million probes. Alignment to the NCBI reference, a composite of several ethnic clades, disclosed nearly 3.45 million single nucleotide polymorphisms (SNPs), including 10,162 non-synonymous SNPs, and 170,202 deletion or insertion polymorphisms (indels). SNP and indel densities were strongly correlated genome-wide. Applying very conservative criteria yielded highly reliable copy number variants for clinical considerations. Potential medical phenotypes were annotated for non-synonymous SNPs, coding domain indels, and structural variants. The integration of several human whole-genome sequences derived from several ethnic groups will assist in understanding genetic ancestry, migration patterns and population bottlenecks.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2860965/" 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/PMC2860965/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Jong-Il -- Ju, Young Seok -- Park, Hansoo -- Kim, Sheehyun -- Lee, Seonwook -- Yi, Jae-Hyuk -- Mudge, Joann -- Miller, Neil A -- Hong, Dongwan -- Bell, Callum J -- Kim, Hye-Sun -- Chung, In-Soon -- Lee, Woo-Chung -- Lee, Ji-Sun -- Seo, Seung-Hyun -- Yun, Ji-Young -- Woo, Hyun Nyun -- Lee, Heewook -- Suh, Dongwhan -- Lee, Seungbok -- Kim, Hyun-Jin -- Yavartanoo, Maryam -- Kwak, Minhye -- Zheng, Ying -- Lee, Mi Kyeong -- Park, Hyunjun -- Kim, Jeong Yeon -- Gokcumen, Omer -- Mills, Ryan E -- Zaranek, Alexander Wait -- Thakuria, Joseph -- Wu, Xiaodi -- Kim, Ryan W -- Huntley, Jim J -- Luo, Shujun -- Schroth, Gary P -- Wu, Thomas D -- Kim, HyeRan -- Yang, Kap-Seok -- Park, Woong-Yang -- Kim, Hyungtae -- Church, George M -- Lee, Charles -- Kingsmore, Stephen F -- Seo, Jeong-Sun -- HG004221/HG/NHGRI NIH HHS/ -- P20 RR016480/RR/NCRR NIH HHS/ -- P20 RR016480-08/RR/NCRR NIH HHS/ -- RR016480/RR/NCRR NIH HHS/ -- U01 AI066569/AI/NIAID NIH HHS/ -- U01 AI066569-04/AI/NIAID NIH HHS/ -- U19 HD077693/HD/NICHD NIH HHS/ -- England -- Nature. 2009 Aug 20;460(7258):1011-5. doi: 10.1038/nature08211. Epub 2009 Jul 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genomic Medicine Institute, Medical Research Center, Seoul National University, Seoul 110-799, Korea.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19587683" target="_blank"〉PubMed〈/a〉
    Keywords: Asian Continental Ancestry Group/*genetics ; Chromosomes, Artificial, Bacterial/genetics ; Comparative Genomic Hybridization ; Computational Biology ; Genome, Human/*genetics ; Humans ; INDEL Mutation/genetics ; Korea ; Oligonucleotide Array Sequence Analysis ; Polymorphism, Single Nucleotide/genetics ; Sequence Analysis, DNA
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2010-11-26
    Description: Activating B-RAF(V600E) (also known as BRAF) kinase mutations occur in approximately 7% of human malignancies and approximately 60% of melanomas. Early clinical experience with a novel class I RAF-selective inhibitor, PLX4032, demonstrated an unprecedented 80% anti-tumour response rate among patients with B-RAF(V600E)-positive melanomas, but acquired drug resistance frequently develops after initial responses. Hypotheses for mechanisms of acquired resistance to B-RAF inhibition include secondary mutations in B-RAF(V600E), MAPK reactivation, and activation of alternative survival pathways. Here we show that acquired resistance to PLX4032 develops by mutually exclusive PDGFRbeta (also known as PDGFRB) upregulation or N-RAS (also known as NRAS) mutations but not through secondary mutations in B-RAF(V600E). We used PLX4032-resistant sub-lines artificially derived from B-RAF(V600E)-positive melanoma cell lines and validated key findings in PLX4032-resistant tumours and tumour-matched, short-term cultures from clinical trial patients. Induction of PDGFRbeta RNA, protein and tyrosine phosphorylation emerged as a dominant feature of acquired PLX4032 resistance in a subset of melanoma sub-lines, patient-derived biopsies and short-term cultures. PDGFRbeta-upregulated tumour cells have low activated RAS levels and, when treated with PLX4032, do not reactivate the MAPK pathway significantly. In another subset, high levels of activated N-RAS resulting from mutations lead to significant MAPK pathway reactivation upon PLX4032 treatment. Knockdown of PDGFRbeta or N-RAS reduced growth of the respective PLX4032-resistant subsets. Overexpression of PDGFRbeta or N-RAS(Q61K) conferred PLX4032 resistance to PLX4032-sensitive parental cell lines. Importantly, MAPK reactivation predicts MEK inhibitor sensitivity. Thus, melanomas escape B-RAF(V600E) targeting not through secondary B-RAF(V600E) mutations but via receptor tyrosine kinase (RTK)-mediated activation of alternative survival pathway(s) or activated RAS-mediated reactivation of the MAPK pathway, suggesting additional therapeutic strategies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3143360/" 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/PMC3143360/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nazarian, Ramin -- Shi, Hubing -- Wang, Qi -- Kong, Xiangju -- Koya, Richard C -- Lee, Hane -- Chen, Zugen -- Lee, Mi-Kyung -- Attar, Narsis -- Sazegar, Hooman -- Chodon, Thinle -- Nelson, Stanley F -- McArthur, Grant -- Sosman, Jeffrey A -- Ribas, Antoni -- Lo, Roger S -- K22 CA151638/CA/NCI NIH HHS/ -- K22 CA151638-01/CA/NCI NIH HHS/ -- K24 CA097588/CA/NCI NIH HHS/ -- England -- Nature. 2010 Dec 16;468(7326):973-7. doi: 10.1038/nature09626. Epub 2010 Nov 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Dermatology/Department of Medicine, UCLA's Jonsson Comprehensive Cancer Center, 52-121 CHS, Los Angeles, California 90095-1750, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21107323" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Line, Tumor ; *Drug Resistance, Neoplasm/drug effects ; Enzyme Activation/drug effects ; *Gene Expression Regulation, Neoplastic/drug effects ; Genes, ras/*genetics ; Humans ; Indoles/pharmacology/therapeutic use ; MAP Kinase Signaling System/drug effects ; Melanoma/*drug therapy/*enzymology/genetics/pathology ; Mitogen-Activated Protein Kinase Kinases/antagonists & inhibitors ; Mutation/genetics ; Oligonucleotide Array Sequence Analysis ; Protein Kinase Inhibitors/pharmacology/therapeutic use ; Proto-Oncogene Proteins B-raf/*antagonists & ; inhibitors/chemistry/genetics/metabolism ; Receptor Protein-Tyrosine Kinases/*metabolism ; Receptor, Platelet-Derived Growth Factor beta/biosynthesis/genetics ; Sulfonamides/pharmacology/therapeutic use ; Up-Regulation/drug effects
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 1990-12-21
    Description: Human breast cancer is usually caused by genetic alterations of somatic cells of the breast, but occasionally, susceptibility to the disease is inherited. Mapping the genes responsible for inherited breast cancer may also allow the identification of early lesions that are critical for the development of breast cancer in the general population. Chromosome 17q21 appears to be the locale of a gene for inherited susceptibility to breast cancer in families with early-onset disease. Genetic analysis yields a lod score (logarithm of the likelihood ratio for linkage) of 5.98 for linkage of breast cancer susceptibility to D17S74 in early-onset families and negative lod scores in families with late-onset disease. Likelihood ratios in favor of linkage heterogeneity among families ranged between 2000:1 and greater than 10(6):1 on the basis of multipoint analysis of four loci in the region.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hall, J M -- Lee, M K -- Newman, B -- Morrow, J E -- Anderson, L A -- Huey, B -- King, M C -- CA27632/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1990 Dec 21;250(4988):1684-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Public Health, University of California, Berkeley 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2270482" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/diagnosis/etiology/*genetics ; Chromosome Mapping ; *Chromosomes, Human, Pair 17 ; Female ; Humans ; Male ; Pedigree ; Polymorphism, Genetic ; Pregnancy ; Risk Factors
    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
    Publication Date: 2006-09-02
    Description: Draft genome sequences have been determined for the soybean pathogen Phytophthora sojae and the sudden oak death pathogen Phytophthora ramorum. Oomycetes such as these Phytophthora species share the kingdom Stramenopila with photosynthetic algae such as diatoms, and the presence of many Phytophthora genes of probable phototroph origin supports a photosynthetic ancestry for the stramenopiles. Comparison of the two species' genomes reveals a rapid expansion and diversification of many protein families associated with plant infection such as hydrolases, ABC transporters, protein toxins, proteinase inhibitors, and, in particular, a superfamily of 700 proteins with similarity to known oomycete avirulence genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tyler, Brett M -- Tripathy, Sucheta -- Zhang, Xuemin -- Dehal, Paramvir -- Jiang, Rays H Y -- Aerts, Andrea -- Arredondo, Felipe D -- Baxter, Laura -- Bensasson, Douda -- Beynon, Jim L -- Chapman, Jarrod -- Damasceno, Cynthia M B -- Dorrance, Anne E -- Dou, Daolong -- Dickerman, Allan W -- Dubchak, Inna L -- Garbelotto, Matteo -- Gijzen, Mark -- Gordon, Stuart G -- Govers, Francine -- Grunwald, Niklaus J -- Huang, Wayne -- Ivors, Kelly L -- Jones, Richard W -- Kamoun, Sophien -- Krampis, Konstantinos -- Lamour, Kurt H -- Lee, Mi-Kyung -- McDonald, W Hayes -- Medina, Monica -- Meijer, Harold J G -- Nordberg, Eric K -- Maclean, Donald J -- Ospina-Giraldo, Manuel D -- Morris, Paul F -- Phuntumart, Vipaporn -- Putnam, Nicholas H -- Rash, Sam -- Rose, Jocelyn K C -- Sakihama, Yasuko -- Salamov, Asaf A -- Savidor, Alon -- Scheuring, Chantel F -- Smith, Brian M -- Sobral, Bruno W S -- Terry, Astrid -- Torto-Alalibo, Trudy A -- Win, Joe -- Xu, Zhanyou -- Zhang, Hongbin -- Grigoriev, Igor V -- Rokhsar, Daniel S -- Boore, Jeffrey L -- BB/C509123/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2006 Sep 1;313(5791):1261-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Virginia Bioinformatics Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA. bmtyler@vt.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16946064" target="_blank"〉PubMed〈/a〉
    Keywords: Algal Proteins/genetics/physiology ; *Biological Evolution ; DNA, Algal/*genetics ; Genes ; *Genome ; Hydrolases/genetics/metabolism ; Photosynthesis/genetics ; Phylogeny ; Physical Chromosome Mapping ; Phytophthora/classification/*genetics/*pathogenicity/physiology ; Plant Diseases/microbiology ; Polymorphism, Single Nucleotide ; Repetitive Sequences, Nucleic Acid ; Sequence Analysis, DNA ; Symbiosis ; Toxins, Biological/genetics
    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
    Publication Date: 2008-03-29
    Description: Schizophrenia is a devastating neurodevelopmental disorder whose genetic influences remain elusive. We hypothesize that individually rare structural variants contribute to the illness. Microdeletions and microduplications 〉100 kilobases were identified by microarray comparative genomic hybridization of genomic DNA from 150 individuals with schizophrenia and 268 ancestry-matched controls. All variants were validated by high-resolution platforms. Novel deletions and duplications of genes were present in 5% of controls versus 15% of cases and 20% of young-onset cases, both highly significant differences. The association was independently replicated in patients with childhood-onset schizophrenia as compared with their parents. Mutations in cases disrupted genes disproportionately from signaling networks controlling neurodevelopment, including neuregulin and glutamate pathways. These results suggest that multiple, individually rare mutations altering genes in neurodevelopmental pathways contribute to schizophrenia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walsh, Tom -- McClellan, Jon M -- McCarthy, Shane E -- Addington, Anjene M -- Pierce, Sarah B -- Cooper, Greg M -- Nord, Alex S -- Kusenda, Mary -- Malhotra, Dheeraj -- Bhandari, Abhishek -- Stray, Sunday M -- Rippey, Caitlin F -- Roccanova, Patricia -- Makarov, Vlad -- Lakshmi, B -- Findling, Robert L -- Sikich, Linmarie -- Stromberg, Thomas -- Merriman, Barry -- Gogtay, Nitin -- Butler, Philip -- Eckstrand, Kristen -- Noory, Laila -- Gochman, Peter -- Long, Robert -- Chen, Zugen -- Davis, Sean -- Baker, Carl -- Eichler, Evan E -- Meltzer, Paul S -- Nelson, Stanley F -- Singleton, Andrew B -- Lee, Ming K -- Rapoport, Judith L -- King, Mary-Claire -- Sebat, Jonathan -- HD043569/HD/NICHD NIH HHS/ -- M01 RR000046/RR/NCRR NIH HHS/ -- MH061355/MH/NIMH NIH HHS/ -- MH061464/MH/NIMH NIH HHS/ -- MH061528/MH/NIMH NIH HHS/ -- NS052108/NS/NINDS NIH HHS/ -- R01 HD043569/HD/NICHD NIH HHS/ -- RR000046/RR/NCRR NIH HHS/ -- RR025014/RR/NCRR NIH HHS/ -- U01 MH061355/MH/NIMH NIH HHS/ -- U01 MH061464/MH/NIMH NIH HHS/ -- U01 MH061528/MH/NIMH NIH HHS/ -- U24 NS052108/NS/NINDS NIH HHS/ -- UL1 RR025014/RR/NCRR NIH HHS/ -- Howard Hughes Medical Institute/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2008 Apr 25;320(5875):539-43. doi: 10.1126/science.1155174. Epub 2008 Mar 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18369103" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Age of Onset ; Amino Acid Sequence ; Brain/cytology/*growth & development/metabolism ; Case-Control Studies ; Child ; Excitatory Amino Acid Transporter 1/chemistry/genetics/physiology ; Female ; *Gene Deletion ; *Gene Duplication ; Genetic Predisposition to Disease ; Genome, Human ; Humans ; Male ; Molecular Sequence Data ; *Mutation ; Neurons/cytology/physiology ; Oligonucleotide Array Sequence Analysis ; Polymorphism, Single Nucleotide ; Receptor, Epidermal Growth Factor/chemistry/genetics/physiology ; Receptor, ErbB-4 ; Schizophrenia/*genetics/physiopathology ; Signal Transduction
    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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