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https://www.readbyqxmd.com/read/28230808/genome-sequence-of-rhodoferax-antarcticus-ant-br-t-a-psychrophilic-purple-nonsulfur-bacterium-from-an-antarctic-microbial-mat
#1
Jennifer M Baker, Carli J Riester, Blair M Skinner, Austin W Newell, Wesley D Swingley, Michael T Madigan, Deborah O Jung, Marie Asao, Min Chen, Patrick C Loughlin, Hao Pan, Yuankui Lin, Yaqiong Li, Jacob Shaw, Mindy Prado, Chris Sherman, Joseph Kuo-Hsiang Tang, Robert E Blankenship, Tingting Zhao, Jeffrey W Touchman, W Matthew Sattley
Rhodoferax antarcticus is an Antarctic purple nonsulfur bacterium and the only characterized anoxygenic phototroph that grows best below 20 °C. We present here a high-quality draft genome of Rfx. antarcticus strain ANT.BR(T), isolated from an Antarctic microbial mat. The circular chromosome (3.8 Mbp) of Rfx. antarcticus has a 59.1% guanine + cytosine (GC) content and contains 4036 open reading frames. In addition, the bacterium contains a sizable plasmid (198.6 kbp, 48.4% GC with 226 open reading frames) that comprises about 5% of the total genetic content...
February 21, 2017: Microorganisms
https://www.readbyqxmd.com/read/28230359/efficient-liver-targeting-by-polyvalent-display-of-a-compact-ligand-for-the-asialoglycoprotein-receptor
#2
Carlos A Sanhueza, Michael M Baksh, Benjamin Thuma, Marc D Roy, Sanjay Dutta, Cathy Préville, Boris A Chrunyk, Kevin Beaumont, Robert Dullea, Mark Ammirati, Shenping Liu, David Gebhard, James E Finley, Christopher T Salatto, Amanda King-Ahmad, Ingrid Stock, Karen Atkinson, Benjamin Reidich, Wen Lin, Rajesh Kumar, Meihua Tu, Elnaz Menhaji-Klotz, David A Price, Spiros Liras, M G Finn, Vincent Mascitti
A compact and stable bicyclic bridged ketal was developed as a ligand for the asialoglycoprotein receptor (ASGPR). This compound showed excellent ligand efficiency, and the molecular details of binding were revealed by the first X-ray crystal structures of ligand-bound ASGPR. This analogue was used to make potent di- and trivalent binders of ASGPR. Extensive characterization of the function of these compounds showed rapid ASGPR-dependent cellular uptake in vitro and high levels of liver/plasma selectivity in vivo...
February 23, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28229424/three-dimensional-printed-scaffolds-with-multipotent-mesenchymal-stromal-cells-for-rabbit-mandibular-reconstruction-and-engineering
#3
Dongdong Fang, Michael Roskies, Mohamed-Nur Abdallah, Mohammed Bakkar, Jack Jordan, Li-Chieh Lin, Faleh Tamimi, Simon D Tran
Multipotent mesenchymal stromal cells (MSC) derived from both the bone marrow and adipose tissue possess the ability to differentiate into multiple cell lineages, regulate the immune function by secreting numerous bioactive paracrine factors, and hold great potential in cell therapy and tissue engineering. When combined with three-dimensional (3D) scaffolds, MSC can be used for bone defect reconstruction and engineering. This protocol describes the isolation of bone marrow mesenchymal stromal cells (BMMSC) and adipose-tissue derived stem cells (ADSC) from rabbits for subsequent seeding on tissue-engineered 3D-printed scaffolds and transplantation into a rabbit-model with the goal of repairing large osseous mandibular defects (one quarter of the lower jaw is removed surgically)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28228601/loss-of-tumor-suppressor-kdm6a-amplifies-prc2-regulated-transcriptional-repression-in-bladder-cancer-and-can-be-targeted-through-inhibition-of-ezh2
#4
Lian Dee Ler, Sujoy Ghosh, Xiaoran Chai, Aye Aye Thike, Hong Lee Heng, Ee Yan Siew, Sucharita Dey, Liang Kai Koh, Jing Quan Lim, Weng Khong Lim, Swe Swe Myint, Jia Liang Loh, Pauline Ong, Xin Xiu Sam, Dachuan Huang, Tony Lim, Puay Hoon Tan, Sanjanaa Nagarajan, Christopher Wai Sam Cheng, Henry Ho, Lay Guat Ng, John Yuen, Po-Hung Lin, Cheng-Keng Chuang, Ying-Hsu Chang, Wen-Hui Weng, Steven G Rozen, Patrick Tan, Caretha L Creasy, See-Tong Pang, Michael T McCabe, Song Ling Poon, Bin Tean Teh
Trithorax-like group complex containing KDM6A acts antagonistically to Polycomb-repressive complex 2 (PRC2) containing EZH2 in maintaining the dynamics of the repression and activation of gene expression through H3K27 methylation. In urothelial bladder carcinoma, KDM6A (a H3K27 demethylase) is frequently mutated, but its functional consequences and therapeutic targetability remain unknown. About 70% of KDM6A mutations resulted in a total loss of expression and a consequent loss of demethylase function in this cancer type...
February 22, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28228169/characterization-of-sulfur-and-nanostructured-sulfur-battery-cathodes-in-electron-microscopy-without-sublimation-artifacts
#5
Barnaby D A Levin, Michael J Zachman, Jörg G Werner, Ritu Sahore, Kayla X Nguyen, Yimo Han, Baoquan Xie, Lin Ma, Lynden A Archer, Emmanuel P Giannelis, Ulrich Wiesner, Lena F Kourkoutis, David A Muller
Lithium sulfur (Li-S) batteries have the potential to provide higher energy storage density at lower cost than conventional lithium ion batteries. A key challenge for Li-S batteries is the loss of sulfur to the electrolyte during cycling. This loss can be mitigated by sequestering the sulfur in nanostructured carbon-sulfur composites. The nanoscale characterization of the sulfur distribution within these complex nanostructured electrodes is normally performed by electron microscopy, but sulfur sublimates and redistributes in the high-vacuum conditions of conventional electron microscopes...
February 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28225610/intramolecular-energy-and-electron-transfer-within-a-diazaperopyrenium-based-cyclophane
#6
Xirui Gong, Ryan M Young, Karel J Hartlieb, Claire Miller, Yilei Wu, Hai Xiao, Peng Li, Nema Hafezi, Jiawang Zhou, Lin Ma, Tao Cheng, William A Goddard, Omar K Farha, Joseph T Hupp, Michael R Wasielewski, J Fraser Stoddart
Molecules capable of performing highly efficient energy transfer and ultrafast photo-induced electron transfer in well-defined multichromophoric structures are indispensable to the development of artificial photosynthetic systems. Herein, we report on the synthesis, characterization and photophysical properties of a rationally designed multichromophoric tetracationic cyclophane, DAPPBox(4+), containing a diazaperopyrenium (DAPP(2+)) unit and an extended viologen (ExBIPY(2+)) unit, which are linked together by two p-xylylene bridges...
February 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28225017/corrigendum-nonautophagic-cytoplasmic-vacuolation-death-induction-in-human-pc-3m-prostate-cancer-by-curcumin-through-reactive-oxygen-species-mediated-endoplasmic-reticulum-stress
#7
Wei-Jiunn Lee, Ming-Hsien Chien, Jyh-Ming Chow, Junn-Liang Chang, Yu-Ching Wen, Yung-Wei Lin, Chao-Wen Cheng, Gi-Ming Lai, Michael Hsiao, Liang-Ming Lee
No abstract text is available yet for this article.
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223179/biological-aspects-of-axonal-damage-in-glaucoma-a-brief-review
#8
REVIEW
Ernst R Tamm, C Ross Ethier, Claude Burgoyne, C Ross Ethier, Ernst R Tamm, Cheri Stowell, John E Dowling, Crawford Downs, Mark H Ellisman, Steven Fisher, Brad Fortune, Marcus Fruttiger, Tatjana Jakobs, Geoffrey Lewis, Claire H Mitchell, John Morrison, Sansar C Sharma, Ian Sigal, Michael Sofroniew, Lin Wang, Janey Wiggs, Samuel Wu, Richard H Masland
Intraocular pressure (IOP) is a critical risk factor in glaucoma, and the available evidence derived from experimental studies in primates and rodents strongly indicates that the site of IOP-induced axonal damage in glaucoma is at the optic nerve head (ONH). However, the mechanisms that cause IOP-induced damage at the ONH are far from understood. A possible sequence of events could originate with IOP-induced stress in the ONH connective tissue elements (peripapillary sclera, scleral canal and lamina cribrosa) that leads to an increase in biomechanical strain...
February 18, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28222595/electron-hopping-and-charge-separation-within-a-naphthalene-1-4-5-8-bis-dicarboximide-chiral-covalent-organic-cage
#9
Tomas Solomek, Natalia E Powers-Riggs, Yi-Lin Wu, Ryan M Young, Matthew D Krzyaniak, Noah E Horwitz, Michael R Wasielewski
We present the stereoselective synthesis of a chiral covalent organic cage consisting of three redox-active naphthalene-1,4:5,8-bis(dicarboximide) (NDI) units by dynamic imine chemistry. Single crystal X-ray diffraction analysis shows that host-guest interactions and racemic co-crystallization allow for controlling the solid state structure. Electronic interactions between the NDI units probed by absorption and circular dichroism spectroscopies, elec-trochemistry and theoretical calculations are shown to be weak...
February 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28222223/prostate-cancer-major-changes-in-the-american-joint-committee-on-cancer-eighth-edition-cancer-staging-manual
#10
Mark K Buyyounouski, Peter L Choyke, Jesse K McKenney, Oliver Sartor, Howard M Sandler, Mahul B Amin, Michael W Kattan, Daniel W Lin
Answer questions and earn CME/CNE The eighth edition of the American Joint Committee on Cancer (AJCC) tumor-node-metastasis (TNM) Staging Manual has been updated and improved to ensure the highest degree of clinical relevance and to improve its utility for patient evaluation and clinical research. Major changes include: 1) pathologically organ-confined disease is now considered pT2 and is no longer subclassified by extent of involvement or laterality, 2) tumor grading now includes both the Gleason score (as in the seventh edition criteria) and the grade group (introduced in the eighth edition criteria), 3) prognostic stage group III includes select, organ-confined disease based on prostate-specific antigen and Gleason/grade group status, and 4) 2 statistical prediction models are included in the staging manual...
February 21, 2017: CA: a Cancer Journal for Clinicians
https://www.readbyqxmd.com/read/28218845/phosphinophosphonates-and-their-tris-pivaloyloxymethyl-prodrugs-reveal-a-negatively-cooperative-butyrophilin-activation-mechanism
#11
Rebekah R Shippy, Xiaochen Lin, Sherry S Agabiti, Jin Li, Brendan M Zangari, Benjamin J Foust, Michael M Poe, Chia-Hung Christine Hsiao, Olga Vinogradova, David F Wiemer, Andrew Joseph Wiemer
Butyrophilin 3A1 (BTN3A1) binds small phosphorous-containing molecules, which initiates transmembrane signaling and activates butyrophilin-responsive cells. We synthesized several phosphinophosphonates and their corresponding tris-pivaloyloxymethyl prodrugs and examined their effects on BTN3A1. An analog of (E)-4-hydroxy-3-methyl-but-2-enyl diphosphate (HMBPP) bound to BTN3A1 with intermediate affinity, which was enthalpy-driven. Docking studies revealed binding to the basic surface pocket and interactions between the allylic hydroxyl group and the BTN3A1 backbone...
February 20, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28218838/design-and-synthesis-of-enantiomerically-pure-decahydroquinoxalines-as-potent-and-selective-%C3%AE%C2%BA-opioid-receptor-agonists-with-anti-inflammatory-activity-in-vivo
#12
Michael Soeberdt, Peter Molenveld, Roy P M Storcken, Renaud Bouzanne des Mazery, Geert Jan Sterk, Reshma Autar, Marjon G Bolster, Clemens Wagner, Sebastianus N H Aerts, Frank R van Holst, Anita Wegert, Giovanni Tangherlini, Bastian Frehland, Dirk Schepmann, Dieter Metze, Tobias Lotts, Ulrich Knie, Kun-Yuan Lin, Tai-Yu Huang, Chih-Ching Lai, Sonja Ständer, Bernhard Wünsch, Christoph Abels
In order to develop novel κ agonists restricted to the periphery, a diastereo- and enantioselective synthesis of (4aR,5S,8aS)-configured decahydroquinoxalines 5-8 was developed. Physicochemical and pharmacological properties were fine-tuned by structural modifications in the arylacetamide and amine part of the pharmacophore as well as in the amine part outside the pharmacophore. The decahydroquinoxalines 5-8 show single-digit nanomolar to subnanomolar κ-opioid receptor affinity, full κ agonistic activity in the [(35)S]GTPγS assay, and high selectivity over μ, δ, σ1, and σ2 receptors as well as the PCP binding site of the NMDA receptor...
February 20, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28217907/diet-and-rheumatoid-arthritis-symptoms-survey-results-from-a-rheumatoid-arthritis-registry
#13
Sara K Tedeschi, Michelle Frits, Jing Cui, Zhi Zack Zhang, Taysir Mahmoud, Christine Iannaccone, Tzu-Chieh Lin, Kazuki Yoshida, Michael E Weinblatt, Nancy A Shadick, Daniel H Solomon
OBJECTIVE: Patients with RA often ask if specific foods, popularized as "inflammatory" or "anti-inflammatory," can improve or worsen their RA. We surveyed patients regarding diet and RA symptoms. METHODS: We mailed a diet survey to 300 subjects in a single-center RA registry at a large academic center. Subjects were asked whether they consume each of 20 foods and whether these foods make their RA symptoms better, worse, or unchanged. Semi-annual registry data include demographics, medications, comorbidities, and disease activity scores...
February 19, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28216664/iron-isotopic-fractionation-between-silicate-mantle-and-metallic-core-at-high-pressure
#14
Jin Liu, Nicolas Dauphas, Mathieu Roskosz, Michael Y Hu, Hong Yang, Wenli Bi, Jiyong Zhao, Esen E Alp, Justin Y Hu, Jung-Fu Lin
The +0.1‰ elevated (56)Fe/(54)Fe ratio of terrestrial basalts relative to chondrites was proposed to be a fingerprint of core-mantle segregation. However, the extent of iron isotopic fractionation between molten metal and silicate under high pressure-temperature conditions is poorly known. Here we show that iron forms chemical bonds of similar strengths in basaltic glasses and iron-rich alloys, even at high pressure. From the measured mean force constants of iron bonds, we calculate an equilibrium iron isotope fractionation between silicate and iron under core formation conditions in Earth of ∼0-0...
February 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28214091/multidonor-intensive-faecal-microbiota-transplantation-for-active-ulcerative-colitis-a-randomised-placebo-controlled-trial
#15
Sudarshan Paramsothy, Michael A Kamm, Nadeem O Kaakoush, Alissa J Walsh, Johan van den Bogaerde, Douglas Samuel, Rupert W L Leong, Susan Connor, Watson Ng, Ramesh Paramsothy, Wei Xuan, Enmoore Lin, Hazel M Mitchell, Thomas J Borody
BACKGROUND: The intestinal microbiota is implicated in the pathogenesis of ulcerative colitis. Faecal microbiota transplantation is a novel form of therapeutic microbial manipulation, but its efficacy in ulcerative colitis is uncertain. We aimed to establish the efficacy of intensive-dosing, multidonor, faecal microbiota transplantation in active ulcerative colitis. METHODS: We conducted a multicentre, double-blind, randomised, placebo-controlled trial at three hospitals in Australia...
February 14, 2017: Lancet
https://www.readbyqxmd.com/read/28211093/gsskat-rapid-gene-set-analysis-and-multiple-testing-correction-for-rare-variant-association-studies-using-weighted-linear-kernels
#16
Nicholas B Larson, Shannon McDonnell, Lisa Cannon Albright, Craig Teerlink, Janet Stanford, Elaine A Ostrander, William B Isaacs, Jianfeng Xu, Kathleen A Cooney, Ethan Lange, Johanna Schleutker, John D Carpten, Isaac Powell, Joan E Bailey-Wilson, Olivier Cussenot, Geraldine Cancel-Tassin, Graham G Giles, Robert J MacInnis, Christiane Maier, Alice S Whittemore, Chih-Lin Hsieh, Fredrik Wiklund, William J Catolona, William Foulkes, Diptasri Mandal, Rosalind Eeles, Zsofia Kote-Jarai, Michael J Ackerman, Timothy M Olson, Christopher J Klein, Stephen N Thibodeau, Daniel J Schaid
Next-generation sequencing technologies have afforded unprecedented characterization of low-frequency and rare genetic variation. Due to low power for single-variant testing, aggregative methods are commonly used to combine observed rare variation within a single gene. Causal variation may also aggregate across multiple genes within relevant biomolecular pathways. Kernel-machine regression and adaptive testing methods for aggregative rare-variant association testing have been demonstrated to be powerful approaches for pathway-level analysis, although these methods tend to be computationally intensive at high-variant dimensionality and require access to complete data...
February 16, 2017: Genetic Epidemiology
https://www.readbyqxmd.com/read/28209777/cd6-as-a-potential-target-for-treating-multiple-sclerosis
#17
Yan Li, Nora G Singer, Joy Whitbred, Michael A Bowen, David A Fox, Feng Lin
CD6 was established as a marker of T cells more than three decades ago, and recent studies have identified CD6 as a risk gene for multiple sclerosis (MS), a disease in which autoreactive T cells are integrally involved. Nevertheless, the precise role of CD6 in regulating T-cell responses is controversial and its significance in the pathogenesis of various diseases remains elusive, partly due to the lack of animals engineered to alter expression of the CD6 gene. In this report, we found that CD6 KO mice showed decreased pathogenic T-cell responses, reduced spinal cord T-cell infiltration, and attenuated disease severity in experimental autoimmune encephalomyelitis (EAE), an animal model of MS...
February 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28209618/the-stat3-mirna-92-wnt-signaling-pathway-regulates-spheroid-formation-and-malignant-progression-in-ovarian-cancer
#18
Min-Wei Chen, Shu-Ting Yang, Ming-Hsien Chien, Kuo-Tai Hua, Chin-Jui Wu, Sheng-Mou Hsiao, Hao Lin, Michael Hsiao, Jen-Liang Su, Lin-Hung Wei
Ovarian cancer spheroids constitute a metastatic niche for transcoelomic spread that also engenders drug resistance. Spheroid-forming cells express active STAT3 signaling and display stem cell-like properties that may contribute to ovarian tumor progression. In this study, we show that STAT3 is hyperactivated in ovarian cancer spheroids and that STAT3 disruption in this setting is sufficient to relieve chemoresistance. In an NSG murine model of human ovarian cancer, STAT3 signaling regulated spheroid formation and self-renewal properties, whereas STAT3 attenuation reduced tumorigenicity...
February 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28204114/a-case-of-mitral-annuloplasty-band-dehiscence
#19
Linda Lin, Andrew Sherrah, Michael Vallely, Lisa Simmons
No abstract text is available yet for this article.
February 15, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28199740/incidence-of-abnormal-liver-biochemical-tests-in-hyperthyroidism
#20
Tiffany Y Lin, Anshula O Shekar, Ning Li, Michael W Yeh, Sammy Saab, Mark Wilson, Angela M Leung
OBJECTIVE: Abnormal serum liver function tests are common in patients with untreated thyrotoxicosis, even prior to the initiation of antithyroidal medications that may worsen their severity. There is a wide range of the incidence of these abnormalities in the published literature. The aim of this study was to assess the risks factors and threshold of thyrotoxicosis severity for developing an abnormal liver biochemical test upon the diagnosis of new thyrotoxicosis. DESIGN: Single-institution retrospective cohort study...
February 15, 2017: Clinical Endocrinology
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