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David Chen

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https://www.readbyqxmd.com/read/28454477/in-situ-analysis-of-oxygen-vacancies-and-band-alignment-in-hfo2-tin-structure-for-cmos-applications
#1
Da-Peng Xu, Lin-Jie Yu, Xu-Dong Chen, Lin Chen, Qing-Qing Sun, Hao Zhu, Hong-Liang Lu, Peng Zhou, Shi-Jin Ding, David Wei Zhang
The density of oxygen vacancies characterization in high-k/metal gate is significant for semiconductor device fabrication. In this work, a new approach was demonstrated to detect the density of oxygen vacancies by in situ x-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS) measurement. Moreover, the band alignment of the structure with optical band gap measured by spectroscopic ellipsometry (SE) and valence band offset by UPS were reported. The specific areal density of oxygen vacancies in high-k dielectric of HfO2/TiN was obtained by fitting the experiment data to be 8...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28454057/application-of-2d-nmr-with-room-temperature-nmr-probes-for-the-assessment-of-the-higher-order-structure-of-filgrastim
#2
Robert G Brinson, Houman Ghasriani, Derek J Hodgson, Kristie M Adams, Ian McEwen, Darón I Freedberg, Kang Chen, David A Keire, Yves Aubin, John P Marino
The higher order structure (HOS) of biotherapeutics is a critical quality attribute that can be evaluated by nuclear magnetic resonance (NMR) spectroscopy at atomic resolution. NMR spectral mapping of HOS can be used to establish HOS consistency of a biologic across manufacturing changes or to compare a biosimilar to an innovator reference product. A previous inter-laboratory study performed using filgrastim drug products demonstrated that two-dimensional (2D)-NMR (1)H(N)-(15)N(H) heteronuclear correlation spectroscopy is a highly robust and precise method for mapping the HOS of biologic drugs at natural abundance using high sensitivity NMR 'cold probes...
April 4, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28453898/electrophysiological-effects-of-anthracyclines-in-adult-survivors-of-pediatric-malignancy
#3
Timothy M Markman, Kathryn Ruble, David Loeb, Allen Chen, Yiyi Zhang, Gary S Beasley, W Reid Thompson, Saman Nazarian
BACKGROUND: Anthracycline use is limited by cardiotoxicity, including arrhythmias and left ventricular (LV) dysfunction. We aim to characterize the association between electrophysiological changes and LV dysfunction. METHODS: A retrospective chart review was conducted, including all 147 pediatric cancer survivors at our institution over 18 years of age and treated with an anthracycline. One hundred thirty-four patients who had at least one electrocardiogram (ECG) and echocardiogram were analyzed...
April 28, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28453685/phenocurve-capturing-dynamic-phenotype-environment-relationships-using-phenomics-data
#4
Yifan Yang, Lei Xu, Zheyun Feng, Jeffrey A Cruz, Linda J Savage, David M Kramer, Jin Chen
Motivation: Phenomics is essential for understanding the mechanisms that regulate or influence growth, fitness, and development. Techniques have been developed to conduct high-throughput large-scale phenotyping on animals, plants and humans, aiming to bridge the gap between genomics, gene functions and traits. Although new developments in phenotyping techniques are exciting, we are limited by the tools to analyze fully the massive phenotype data, especially the dynamic relationships between phenotypes and environments...
May 1, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28453351/mallet-fractures-of-the-thumb-compared-with-mallet-fractures-of-the-fingers
#5
Kamilcan Oflazoglu, Ali Moradi, Yvonne Braun, David Ring, Neal C Chen, Kyle R Eberlin
BACKGROUND: The purpose of this study was to look for differences in mechanism, radiographic findings, and treatment between mallet fractures of the thumb and mallet fractures of the index through small fingers. METHODS: This retrospective study included 24 mallet fractures of the thumb and 392 mallet fractures of other digits. We compared demographics, injury factors (side, dominant hand, time between injury and first visit, and injury mechanism), subluxation, fragment size, treatment, and time from injury to final evaluation between the 2 groups...
May 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28449119/mutations-in-thap11-cause-an-inborn-error-of-cobalamin-metabolism-and-developmental-abnormalities
#6
Anita M Quintana, Hung-Chun Yu, Alison Brebner, Mihaela Pupavac, Elizabeth A Geiger, Abigail Watson, Victoria L Castro, Warren Cheung, Shu-Huang Chen, David Watkins, Tomi Pastinen, Flemming Skovby, Bruce Appel, David S Rosenblatt, Tamim H Shaikh
CblX (MIM309541) is an X-linked recessive disorder characterized by defects in cobalamin (vitamin B12) metabolism and other developmental defects. Mutations in HCFC1, a transcriptional co-regulator which interacts with multiple transcription factors, have been associated with cblX. HCFC1 regulates cobalamin metabolism via the regulation of MMACHC expression through its interaction with THAP11, a THAP domain-containing transcription factor. The HCFC1/THAP11 complex potentially regulates genes involved in diverse cellular functions including cell cycle, proliferation, and transcription...
April 25, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28444909/the-histone-methyltransferase-ezh2-is-a-therapeutic-target-in-small-cell-carcinoma-of-the-ovary-hypercalcemic-type
#7
Yemin Wang, Shary Yuting Chen, Anthony N Karnezis, Shane Colborne, Nancy Dos Santos, Jessica D Lang, William P D Hendricks, Krystal A Orlando, Damian Yap, Friedrich Kommoss, Marcel B Bally, Gregg B Morin, Jeffrey M Trent, Bernard E Weissman, David G Huntsman
Small cell carcinoma of the ovary, hypercalcemic type (SCCOHT) is a rare but aggressive and untreatable malignancy affecting young women. We and others recently discovered that SMARCA4, a gene encoding the ATPase of the SWI/SNF chromatin-remodeling complex, is the only gene recurrently mutated in the majority of SCCOHT. The low somatic complexity of SCCOHT genomes and the prominent role of the SWI/SNF chromatin-remodeling complex in transcriptional control of genes suggest that SCCOHT cells may rely on epigenetic rewiring for oncogenic transformation...
April 26, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28444007/prevalence-of-risk-factors-for-noncommunicable-diseases-in-an-indigenous-community-in-santiago-atitl%C3%A3-n-guatemala
#8
David Chen, Álvaro Rivera-Andrade, Jessica González, David Burt, Carlos Mendoza-Montano, James Patrie, Max Luna
Objective: To describe the prevalence of noncommunicable disease (NCD) risk factors and assess knowledge of those risk factors in the indigenous community of Santiago Atitlán in Guatemala, a lower-middle income country. Methods: A population-based, cross-sectional study was conducted using a modified version of the World Health Organization's STEPS protocol. Adults aged 20-65 years were surveyed regarding demographics and NCD risk factors, and the survey was followed by anthropometric and biochemical measurements...
April 20, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28443855/dielectric-functions-and-critical-points-of-crystalline-ws2-ultrathin-films-with-tunable-thickness
#9
Da-Hai Li, Hua Zheng, Zi-Yi Wang, Rong-Jun Zhang, Hao Zhang, Yu-Xiang Zheng, Song-You Wang, David Wei Zhang, Liang-Yao Chen
Centimeter-scale WS2 ultrathin films were synthesized on sapphire substrates, and they showed highly oriented crystallographic growth along the c axis. Afterwards, the as-grown samples were systematically characterized using various detection methods. Reliable values of the roughness layer thickness and the film thickness were extracted using both atomic force microscopy (AFM) and spectroscopic ellipsometry (SE), and identified using Raman spectroscopy as well. The expansion and tensile strain along the [001] direction were discovered using X-ray diffraction (XRD) measurements...
April 26, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28443668/tungsten-vi-copper-i-sulfur-cluster-supported-metal-organic-frameworks-bridged-by-in-situ-click-formed-tetrazolate-ligands
#10
Qiu-Fang Chen, Xin Zhao, Quan Liu, Ji-Dong Jia, Xiao-Ting Qiu, Ying-Lin Song, David James Young, Wen-Hua Zhang, Jian-Ping Lang
Six analogous two-dimensional (2D) [Tp*WS3Cu3]-based (Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate) networks, namely, {[(Tp*WS3Cu3)2L3](μ3-N3)}n (2: L = 5-methyltetrazolate (Mtta); 3a: L = 5-ethyltetrazolate (Etta)) and {[(Tp*WS3Cu3)2L3]BF4}n (3b: L = Etta; 4: L = 5-propyltetrazolate (Ptta); 5: L = 5-butyltetrazolate (Btta); 6: L = 5-pentyltetrazolate (Petta)) were synthesized by reactions of [Et4N][Tp*WS3] (1), [Cu(CH3CN)4]BF4, NaN3, and NH4BF4 in different nitrile solvents (CH3(CH2)nCN, n = 0, 1, 2, 3, and 4) under solvothermal conditions...
April 26, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28443625/genome-wide-meta-analysis-of-241-258-adults-accounting-for-smoking-behaviour-identifies-novel-loci-for-obesity-traits
#11
Anne E Justice, Thomas W Winkler, Mary F Feitosa, Misa Graff, Virginia A Fisher, Kristin Young, Llilda Barata, Xuan Deng, Jacek Czajkowski, David Hadley, Julius S Ngwa, Tarunveer S Ahluwalia, Audrey Y Chu, Nancy L Heard-Costa, Elise Lim, Jeremiah Perez, John D Eicher, Zoltán Kutalik, Luting Xue, Anubha Mahajan, Frida Renström, Joseph Wu, Qibin Qi, Shafqat Ahmad, Tamuno Alfred, Najaf Amin, Lawrence F Bielak, Amelie Bonnefond, Jennifer Bragg, Gemma Cadby, Martina Chittani, Scott Coggeshall, Tanguy Corre, Nese Direk, Joel Eriksson, Krista Fischer, Mathias Gorski, Marie Neergaard Harder, Momoko Horikoshi, Tao Huang, Jennifer E Huffman, Anne U Jackson, Johanne Marie Justesen, Stavroula Kanoni, Leena Kinnunen, Marcus E Kleber, Pirjo Komulainen, Meena Kumari, Unhee Lim, Jian'an Luan, Leo-Pekka Lyytikäinen, Massimo Mangino, Ani Manichaikul, Jonathan Marten, Rita P S Middelberg, Martina Müller-Nurasyid, Pau Navarro, Louis Pérusse, Natalia Pervjakova, Cinzia Sarti, Albert Vernon Smith, Jennifer A Smith, Alena Stančáková, Rona J Strawbridge, Heather M Stringham, Yun Ju Sung, Toshiko Tanaka, Alexander Teumer, Stella Trompet, Sander W van der Laan, Peter J van der Most, Jana V Van Vliet-Ostaptchouk, Sailaja L Vedantam, Niek Verweij, Jacqueline M Vink, Veronique Vitart, Ying Wu, Loic Yengo, Weihua Zhang, Jing Hua Zhao, Martina E Zimmermann, Niha Zubair, Gonçalo R Abecasis, Linda S Adair, Saima Afaq, Uzma Afzal, Stephan J L Bakker, Traci M Bartz, John Beilby, Richard N Bergman, Sven Bergmann, Reiner Biffar, John Blangero, Eric Boerwinkle, Lori L Bonnycastle, Erwin Bottinger, Daniele Braga, Brendan M Buckley, Steve Buyske, Harry Campbell, John C Chambers, Francis S Collins, Joanne E Curran, Gert J de Borst, Anton J M de Craen, Eco J C de Geus, George Dedoussis, Graciela E Delgado, Hester M den Ruijter, Gudny Eiriksdottir, Anna L Eriksson, Tõnu Esko, Jessica D Faul, Ian Ford, Terrence Forrester, Karl Gertow, Bruna Gigante, Nicola Glorioso, Jian Gong, Harald Grallert, Tanja B Grammer, Niels Grarup, Saskia Haitjema, Göran Hallmans, Anders Hamsten, Torben Hansen, Tamara B Harris, Catharina A Hartman, Maija Hassinen, Nicholas D Hastie, Andrew C Heath, Dena Hernandez, Lucia Hindorff, Lynne J Hocking, Mette Hollensted, Oddgeir L Holmen, Georg Homuth, Jouke Jan Hottenga, Jie Huang, Joseph Hung, Nina Hutri-Kähönen, Erik Ingelsson, Alan L James, John-Olov Jansson, Marjo-Riitta Jarvelin, Min A Jhun, Marit E Jørgensen, Markus Juonala, Mika Kähönen, Magnus Karlsson, Heikki A Koistinen, Ivana Kolcic, Genovefa Kolovou, Charles Kooperberg, Bernhard K Krämer, Johanna Kuusisto, Kirsti Kvaløy, Timo A Lakka, Claudia Langenberg, Lenore J Launer, Karin Leander, Nanette R Lee, Lars Lind, Cecilia M Lindgren, Allan Linneberg, Stephane Lobbens, Marie Loh, Mattias Lorentzon, Robert Luben, Gitta Lubke, Anja Ludolph-Donislawski, Sara Lupoli, Pamela A F Madden, Reija Männikkö, Pedro Marques-Vidal, Nicholas G Martin, Colin A McKenzie, Barbara McKnight, Dan Mellström, Cristina Menni, Grant W Montgomery, Aw Bill Musk, Narisu Narisu, Matthias Nauck, Ilja M Nolte, Albertine J Oldehinkel, Matthias Olden, Ken K Ong, Sandosh Padmanabhan, Patricia A Peyser, Charlotta Pisinger, David J Porteous, Olli T Raitakari, Tuomo Rankinen, D C Rao, Laura J Rasmussen-Torvik, Rajesh Rawal, Treva Rice, Paul M Ridker, Lynda M Rose, Stephanie A Bien, Igor Rudan, Serena Sanna, Mark A Sarzynski, Naveed Sattar, Kai Savonen, David Schlessinger, Salome Scholtens, Claudia Schurmann, Robert A Scott, Bengt Sennblad, Marten A Siemelink, Günther Silbernagel, P Eline Slagboom, Harold Snieder, Jan A Staessen, David J Stott, Morris A Swertz, Amy J Swift, Kent D Taylor, Bamidele O Tayo, Barbara Thorand, Dorothee Thuillier, Jaakko Tuomilehto, Andre G Uitterlinden, Liesbeth Vandenput, Marie-Claude Vohl, Henry Völzke, Judith M Vonk, Gérard Waeber, Melanie Waldenberger, R G J Westendorp, Sarah Wild, Gonneke Willemsen, Bruce H R Wolffenbuttel, Andrew Wong, Alan F Wright, Wei Zhao, M Carola Zillikens, Damiano Baldassarre, Beverley Balkau, Stefania Bandinelli, Carsten A Böger, Dorret I Boomsma, Claude Bouchard, Marcel Bruinenberg, Daniel I Chasman, Yii-DerIda Chen, Peter S Chines, Richard S Cooper, Francesco Cucca, Daniele Cusi, Ulf de Faire, Luigi Ferrucci, Paul W Franks, Philippe Froguel, Penny Gordon-Larsen, Hans-Jörgen Grabe, Vilmundur Gudnason, Christopher A Haiman, Caroline Hayward, Kristian Hveem, Andrew D Johnson, J Wouter Jukema, Sharon L R Kardia, Mika Kivimaki, Jaspal S Kooner, Diana Kuh, Markku Laakso, Terho Lehtimäki, Loic Le Marchand, Winfried März, Mark I McCarthy, Andres Metspalu, Andrew P Morris, Claes Ohlsson, Lyle J Palmer, Gerard Pasterkamp, Oluf Pedersen, Annette Peters, Ulrike Peters, Ozren Polasek, Bruce M Psaty, Lu Qi, Rainer Rauramaa, Blair H Smith, Thorkild I A Sørensen, Konstantin Strauch, Henning Tiemeier, Elena Tremoli, Pim van der Harst, Henrik Vestergaard, Peter Vollenweider, Nicholas J Wareham, David R Weir, John B Whitfield, James F Wilson, Jessica Tyrrell, Timothy M Frayling, Inês Barroso, Michael Boehnke, Panagiotis Deloukas, Caroline S Fox, Joel N Hirschhorn, David J Hunter, Tim D Spector, David P Strachan, Cornelia M van Duijn, Iris M Heid, Karen L Mohlke, Jonathan Marchini, Ruth J F Loos, Tuomas O Kilpeläinen, Ching-Ti Liu, Ingrid B Borecki, Kari E North, L Adrienne Cupples
Few genome-wide association studies (GWAS) account for environmental exposures, like smoking, potentially impacting the overall trait variance when investigating the genetic contribution to obesity-related traits. Here, we use GWAS data from 51,080 current smokers and 190,178 nonsmokers (87% European descent) to identify loci influencing BMI and central adiposity, measured as waist circumference and waist-to-hip ratio both adjusted for BMI. We identify 23 novel genetic loci, and 9 loci with convincing evidence of gene-smoking interaction (GxSMK) on obesity-related traits...
April 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28442065/the-morphological-and-functional-development-of-the-stria-vascularis-in-miniature-pigs
#12
Weiwei Guo, Haijin Yi, Zhang Yan, Lili Ren, Lei Chen, Li Dong Zhao, Yu Ning, David Z Z He, Shi-Ming Yang
The purpose of this study was to examine the morphological and functional development of the lateral wall of the scala media of the cochlea in miniature pigs; light and transmission electron microscopy and electrophysiology were used for this purpose. We showed that the lateral wall of the scala media of the cochlea appears at embryonic Day 21 (E21) when the cochlear duct begins to form. From E28 to E49, the lateral wall can be distinguished according to its position along the cochlea. At E56, cells in the lateral wall begin to differentiate into three different types...
March 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28440689/self-assembled-hemoglobin-nanoparticles-for-improved-oral-photosensitizer-delivery-and-oral-photothermal-therapy-in-vivo
#13
Kaikai Wang, Gang Chen, Qi Hu, Yuqian Zhen, Huipeng Li, Jiao Chen, Bin Di, Yiqiao Hu, Minjie Sun, David Oupický
AIM: The aim of the present study was to use hemoglobin (Hb) nanoparticles (NPs) to improve oral bioavailability of a near-infrared dye IR780 for in vivo antitumor application in photothermal therapy. METHODS: One-step acid-denaturing method was used to encapsulate IR780 into self-assembled Hb NPs (IR780@Hb NPs). Pharmacokinetics, biodistribution and antitumor effect were studied in vivo. RESULTS: The Hb NPs showed high stability in enzymatic and acidic conditions similar to the gastric environment, and enhanced absorption of IR780 into the blood...
April 25, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28440475/a-nine-mirna-signature-as-a-potential-diagnostic-marker-for-breast-carcinoma-an-integrated-study-of-1-110-cases
#14
Dan-Dan Xiong, Jun Lv, Kang-Lai Wei, Zhen-Bo Feng, Ji-Tian Chen, Ke-Cheng Liu, Gang Chen, Dian-Zhong Luo
Growing evidence indicates that microRNAs (miRNAs) play critical roles in the initiation and progression of breast carcinoma (BC) and are promising diagnostic biomarkers. In the present study, we aimed to identify a multi-marker miRNA pool with high diagnostic performance for BC. We collected miRNA expression profiles of BC samples and normal breast tissues from The Cancer Genome Atlas (TCGA) and screened differentially expressed miRNAs by conducting two‑sample t-tests and by calculating log2 fold-change (log2FC) ratios...
April 25, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28440318/corrigendum-proteogenomic-integration-reveals-therapeutic-targets-in-breast-cancer-xenografts
#15
Kuan-Lin Huang, Shunqiang Li, Philipp Mertins, Song Cao, Harsha P Gunawardena, Kelly V Ruggles, D R Mani, Karl R Clauser, Maki Tanioka, Jerry Usary, Shyam M Kavuri, Ling Xie, Christopher Yoon, Jana W Qiao, John Wrobel, Matthew A Wyczalkowski, Petra Erdmann-Gilmore, Jacqueline E Snider, Jeremy Hoog, Purba Singh, Beifang Niu, Zhanfang Guo, Sam Qiancheng Sun, Souzan Sanati, Emily Kawaler, Xuya Wang, Adam Scott, Kai Ye, Michael D McLellan, Michael C Wendl, Anna Malovannaya, Jason M Held, Michael A Gillette, David Fenyö, Christopher R Kinsinger, Mehdi Mesri, Henry Rodriguez, Sherri R Davies, Charles M Perou, Cynthia Ma, R Reid Townsend, Xian Chen, Steven A Carr, Matthew J Ellis, Li Ding
No abstract text is available yet for this article.
April 25, 2017: Nature Communications
https://www.readbyqxmd.com/read/28436838/electromechanical-coupling-factor-of-breast-tissue-as-a-biomarker-for-breast-cancer
#16
Kihan Park, Wenjin Chen, Marina Chekmareva, David Foran, Jaydev Desai
GOAL: This research aims to validate a new biomarker of breast cancer by introducing electromechanical coupling factor of breast tissue samples as a possible additional indicator of breast cancer. Since collagen fibril exhibits a structural organization that gives rise to a piezoelectric effect, the difference in collagen density between normal and cancerous tissue can be captured by identifying the corresponding electromechanical coupling factor. METHODS: The design of a portable diagnostic tool and a microelectromechanical systems(MEMS)- based biochip, which is integrated with a piezoresistive sensing layer for measuring the reaction force as well as a microheater for temperature control, is introduced...
April 19, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28433860/cognitive-intrusion-of-pain-and-catastrophic-thinking-independently-explain-interference-of-pain-in-the-activities-of-daily-living
#17
Mojtaba Talaei-Khoei, Paul T Ogink, Ragini Jha, David Ring, Neal Chen, Ana-Maria Vranceanu
Patients with musculoskeletal illness often report that pain interferes with their ability to engage in activities of daily living. Catastrophic thinking is consistently depicted as an important cognitive factor that hinders adjustment to pain. Current research has also shown that pain negatively impacts an individual's ability to maintain attention on the task at hand. While a measure of the experience of cognitive intrusion of pain (ECIP) has been recently developed to quantify the extent of that impact, little research has explored this issue in everyday settings...
April 14, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28433771/a-versatile-tumor-gene-deletion-system-reveals-a-crucial-role-for-fgfr1-in-breast-cancer-metastasis
#18
Wei Wang, Yanling Meng, Bingning Dong, Jie Dong, Michael M Ittmann, Chad J Creighton, Lu Yang, Hong Zhang, Tao Shen, Jianghua Wang, David R Rowley, Yi Li, Fengju Chen, David D Moore, Feng Yang
RCAS avian viruses have been used to deliver oncogene expression and induce tumors in transgenic mice expressing the virus receptor TVA. Here we report the generation and characterization of a novel RCAS-Cre-IRES-PyMT (RCI-PyMT) virus designed to specifically knockout genes of interest in tumors generated in appropriate mutant mouse hosts. FGF receptor 1 (FGFR1) is a gene that is amplified in human breast cancer, but there have been no definitive studies on its function in mammary tumorigenesis, progression, and metastasis in vivo in spontaneous tumors in mice...
April 20, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28431459/direct-growth-of-al2o3-on-black-phosphorus-by-plasma-enhanced-atomic-layer-deposition
#19
B B Wu, H M Zheng, Y Q Ding, W J Liu, H L Lu, P Zhou, L Chen, Q Q Sun, S J Ding, David W Zhang
Growing high-quality and uniform dielectric on black phosphorus is challenging since it is easy to react with O2 or H2O in ambient. In this work, we have directly grown Al2O3 on BP using plasma-enhanced atomic layer deposition (PEALD). The surface roughness of BP with covered Al2O3 film can reduce significantly, which is due to the removal of oxidized bubble in BP surface by oxygen plasma. It was also found there is an interfacial layer of PO x in between amorphous Al2O3 film and crystallized BP, which is verified by both X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) measurements...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28431250/nuclear-proximity-of-mtr4-to-rna-exosome-restricts-dna-mutational-asymmetry
#20
Junghyun Lim, Pankaj Kumar Giri, David Kazadi, Brice Laffleur, Wanwei Zhang, Veronika Grinstein, Evangelos Pefanis, Lewis M Brown, Erik Ladewig, Ophélie Martin, Yuling Chen, Raul Rabadan, François Boyer, Gerson Rothschild, Michel Cogné, Eric Pinaud, Haiteng Deng, Uttiya Basu
The distribution of sense and antisense strand DNA mutations on transcribed duplex DNA contributes to the development of immune and neural systems along with the progression of cancer. Because developmentally matured B cells undergo biologically programmed strand-specific DNA mutagenesis at focal DNA/RNA hybrid structures, they make a convenient system to investigate strand-specific mutagenesis mechanisms. We demonstrate that the sense and antisense strand DNA mutagenesis at the immunoglobulin heavy chain locus and some other regions of the B cell genome depends upon localized RNA processing protein complex formation in the nucleus...
April 20, 2017: Cell
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