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https://www.readbyqxmd.com/read/28334619/investigation-on-metal-tolerance-and-phytoremoval-activity-in-the-poplar-hybrid-clone-monviso-under-cu-spiked-water-potential-use-for-wastewater-treatment
#1
Fabrizio Pietrini, Daniela Di Baccio, Valentina Iori, Sofia Veliksar, Natalia Lemanova, Liudvika Juškaitė, Audrius Maruška, Massimo Zacchini
A serious concern for the environmental and human health is represented by the increasing copper (Cu) occurrence in agricultural soils and waters, because of the possible food contamination and bioaugmentation along the trophic chain. The request for the decontamination of different matrices with an environmentally sustainable technology as the phytoremediation should be addressed by selecting plant materials with improved pollutant tolerance and removal capability. With this purpose, plants of the hybrid poplar clone "Monviso" (Populus×generosa A...
March 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28333184/analysis-of-blashv-12-carrying-escherichia-coli-clones-and-plasmids-from-human-animal-and-food-sources
#2
Carla Andrea Alonso, Geovana Brenner Michael, Jun Li, Sergio Somalo, Carmen Simón, Yang Wang, Heike Kaspar, Kristina Kadlec, Carmen Torres, Stefan Schwarz
Objectives: This study aimed at characterizing 23 Escherichia coli isolates from various sources and their respective bla SHV-12 -carrying plasmids and sequencing one of these plasmids completely. Methods: Isolates were typed by XbaI-PFGE, MLST and PCR-based phylotyping. Transformed bla SHV-12 -carrying plasmids were examined by replicon typing, S1-nuclease, conjugation, EcoRI-HindIII-BamHI digests and plasmid MLST. Co-located resistance genes and integrons as well as the bla SHV-12 genetic environment were analysed by PCR and sequencing...
February 17, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28332627/cross-neutralizing-anti-hiv-1-human-single-chain-variable-fragments-scfvs-against-cd4-binding-site-and-n332-glycan-identified-from-a-recombinant-phage-library
#3
Lubina Khan, Rajesh Kumar, Ramachandran Thiruvengadam, Hilal Ahmad Parray, Muzamil Ashraf Makhdoomi, Sanjeev Kumar, Heena Aggarwal, Madhav Mohata, Abdul Wahid Hussain, Raksha Das, Raghavan Varadarajan, Jayanta Bhattacharya, Madhu Vajpayee, K G Murugavel, Suniti Solomon, Subrata Sinha, Kalpana Luthra
More than 50% of HIV-1 infection globally is caused by subtype_C viruses. Majority of the broadly neutralizing antibodies (bnAbs) targeting HIV-1 have been isolated from non-subtype_C infected donors. Mapping the epitope specificities of bnAbs provides useful information for vaccine design. Recombinant antibody technology enables generation of a large repertoire of monoclonals with diverse specificities. We constructed a phage recombinant single chain variable fragment (scFv) library with a diversity of 7.8 × 10(8) clones, using a novel strategy of pooling peripheral blood mononuclear cells (PBMCs) of six select HIV-1 chronically infected Indian donors whose plasma antibodies exhibited potent cross neutralization efficiency...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331130/cytopenias-and-clonal-expansion-of-gamma-delta-t-cells-in-a-patient-with-anaplasmosis-a-potential-diagnostic-pitfall
#4
Daniel Marko, Anamarija M Perry, Arjuna Ponnampalam, Michel R Nasr
Human granulocytic anaplasmosis is a rare, tick-borne infectious disease caused by Anaplasma phagocytophilum. Herein, we report a rare case of human granulocytic anaplasmosis associated with cytopenias and clonal expansion of gamma/delta T-cells in the bone marrow. A 77-year old man presented multiple times to the emergency department complaining of muscle weakness. Complete blood count detected cytopenias and peripheral blood smear showed pseudo Pelger-Huet neutrophils. These findings prompted bone marrow evaluation with ancillary studies including flow cytometry, karyotyping and T-cell rearrangement studies...
2017: Journal of Clinical and Experimental Hematopathology: JCEH
https://www.readbyqxmd.com/read/28330888/defining-a-core-genome-multilocus-sequence-typing-scheme-for-the-global-epidemiology-of-vibrio-parahaemolyticus
#5
Narjol Gonzalez-Escalona, Keith A Jolley, Elizabeth Reed, Jaime Martinez-Urtaza
Vibrio parahaemolyticus is an important human foodborne pathogen whose transmission is associated with the consumption of contaminated seafood with a growing number of infections reported over recent years worldwide. A multilocus sequence typing (MLST) database for V. parahaemolyticus was created in 2008 and a large number of clones have been identified causing severe outbreaks worldwide (ST3), recurrent outbreaks in certain regions (e.g., ST36) or spreading to other regions where they are non-endemic (e.g...
March 22, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28330839/evolutionary-insights-into-t-type-ca-2-channel-structure-function-and-ion-selectivity-from-the-trichoplax-adhaerens-homologue
#6
Carolyn L Smith, Salsabil Abdallah, Yuen Yan Wong, Phuong Le, Alicia N Harracksingh, Liana Artinian, Arianna N Tamvacakis, Vincent Rehder, Thomas S Reese, Adriano Senatore
Four-domain voltage-gated Ca(2+) (Cav) channels play fundamental roles in the nervous system, but little is known about when or how their unique properties and cellular roles evolved. Of the three types of metazoan Cav channels, Cav1 (L-type), Cav2 (P/Q-, N- and R-type) and Cav3 (T-type), Cav3 channels are optimized for regulating cellular excitability because of their fast kinetics and low activation voltages. These same properties permit Cav3 channels to drive low-threshold exocytosis in select neurons and neurosecretory cells...
March 22, 2017: Journal of General Physiology
https://www.readbyqxmd.com/read/28330086/cloning-expression-purification-and-characterization-of-human-mitochondrial-carbonic-anhydrase-va
#7
Danish Idrees, Sudhir Kumar, Syed Abdul Arif Rehman, Samudrala Gourinath, Asimul Islam, Faizan Ahmad, Md Imtaiyaz Hassan
Carbonic anhydrase VA (CAVA) is a mitochondrial enzyme that catalyzes the reversible hydration of CO2 to produce HCO3(-) and proton. CAV is primarily involved in several biosynthetic processes such as ureagenesis, gluconeogenesis and lipogenesis by providing bicarbonate ion. Here, we report a new strategy for cloning, expression and purification for CAVA in the bacterial system followed by its biophysical characterization. The cDNA of CAVA, a 801 nucleotide long that encodes a 267-amino acid polypeptide of molecular mass of 30-kDa (excluding signal peptide), was sub-cloned in the expression vector pET21c and transformed into Escherichia coli strain BL21 (DE3) for expression...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328967/phenotypic-and-molecular-characterization-of-antimicrobial-resistance-in-enterobacter-spp-isolates-from-companion-animals-in-japan
#8
Kazuki Harada, Takae Shimizu, Yujiro Mukai, Ken Kuwajima, Tomomi Sato, Akari Kajino, Masaru Usui, Yutaka Tamura, Yui Kimura, Tadashi Miyamoto, Yuzo Tsuyuki, Asami Ohki, Yasushi Kataoka
The emergence of antimicrobial resistance among Enterobacter spp., including resistance to extended-spectrum cephalosporins (ESC), is of great concern in both human and veterinary medicine. In this study, we investigated the prevalence of antimicrobial resistance among 60 isolates of Enterobacter spp., including E. cloacae (n = 44), E. aerogenes (n = 10), and E. asburiae (n = 6), from clinical specimens of dogs and cats from 15 prefectures in Japan. Furthermore, we characterized the resistance mechanisms harbored by these isolates, including extended-spectrum β-lactamases (ESBLs) and plasmid-mediated quinolone resistance (PMQR); and assessed the genetic relatedness of ESC-resistant Enterobacter spp...
2017: PloS One
https://www.readbyqxmd.com/read/28327288/atrophin-controls-developmental-signaling-pathways-via-interactions-with-trithorax-like
#9
Kelvin Yeung, Ann Boija, Edvin Karlsson, Per-Henrik Holmqvist, Yonit Tsatskis, Ilaria Nisoli, Damian B Yap, Alireza Lorzadeh, Michelle Moksa, Martin Hirst, Samuel Aparicio, Manolis Fanto, Per Stenberg, Mattias Mannervik, Helen McNeill
Mutations in human Atrophin1, a transcriptional corepressor, cause dentatorubral-pallidoluysian atrophy, a neurodegenerative disease. Drosophila Atrophin (Atro) mutants display many phenotypes, including neurodegeneration, segmentation, patterning and planar polarity defects. Despite Atro's critical role in development and disease, relatively little is known about Atro's binding partners and downstream targets. We present the first genomic analysis of Atro using ChIP-seq against endogenous Atro. ChIP-seq identified 1300 potential direct targets of Atro including engrailed, and components of the Dpp and Notch signaling pathways...
March 22, 2017: ELife
https://www.readbyqxmd.com/read/28326698/-construction-of-human-mucosa-oral-epithelial-cell-lines-overexpressing-telomerase-reverse-transcriptase-gene-mediated-by-lentivirus
#10
Zeng Sa, Qin Xiaodong, He Xiangyi, Che Chunxiao, Zhang Xiao, Xie Siyu, Sun Guijun, Wang Lihe
OBJECTIVE: To construct a cell line of oral mucosa epithelial cells that stably express human telomerase reverse transcriptase (hTERT) by lentiviral vectors, approaches for the establishment of stable and efficient immortalized oral mucosa epithelial cell lines were explored. METHODS: Whole RNA was extracted from 293T cells. The hTERT gene was amplified by polymerase chain reaction (PCR) and cloned into the lentiviral vector as pLVX-puro-hTERT. The lentivirus particles were successfully packaged and used to infect primary oral epithelial cells...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28325870/crispr-cas9-guided-oncogenic-chromosomal-translocations-with-conditional-fusion-protein-expression-in-human-mesenchymal-cells
#11
Fabio Vanoli, Mark Tomishima, Weiran Feng, Khadija Lamribet, Loelia Babin, Erika Brunet, Maria Jasin
Gene editing techniques have been extensively used to attempt to model recurrent genomic rearrangements found in tumor cells. These methods involve the induction of double-strand breaks at endogenous loci followed by the identification of breakpoint junctions within a population, which typically arise by nonhomologous end joining. The low frequency of these events, however, has hindered the cloning of cells with the desired rearrangement before oncogenic transformation. Here we present a strategy combining CRISPR-Cas9 technology and homology-directed repair to allow for the selection of human mesenchymal stem cells harboring the oncogenic translocation EWSR1-WT1 found in the aggressive desmoplastic small round cell tumor...
March 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28325766/staphylococcal-%C3%AE-toxin-modulates-human-aortic-endothelial-cell-and-platelet-function-through-sphingomyelinase-and-biofilm-ligase-activities
#12
Alfa Herrera, Katarina Kulhankova, Vijay K Sonkar, Sanjana Dayal, Aloysius J Klingelhutz, Wilmara Salgado-Pabón, Patrick M Schlievert
Staphylococcus aureus causes many infections, such as skin and soft tissue, pneumonia, osteomyelitis, and infective endocarditis (IE). IE is an endovascular infection of native and prosthetic valves and the lining of the heart; it is characterized by the formation of cauliflower-like "vegetations" composed of fibrin, platelets, other host factors, bacteria, and bacterial products. β-Toxin is an S. aureus virulence factor that contributes to the microorganism's ability to cause IE. This cytolysin has two enzymatic activities: sphingomyelinase (SMase) and biofilm ligase...
March 21, 2017: MBio
https://www.readbyqxmd.com/read/28323873/a-three-monoclonal-antibody-combination-potently-neutralizes-multiple-botulinum-neurotoxin-serotype-f-subtypes
#13
Yongfeng Fan, Consuelo Garcia-Rodriguez, Jianlong Lou, Weihua Wen, Fraser Conrad, Wenwu Zhai, Theresa J Smith, Leonard A Smith, James D Marks
Human botulism is primarily caused by botulinum neurotoxin (BoNT) serotypes A, B and E, with around 1% caused by serotype F (BoNT/F). BoNT/F comprises at least seven different subtypes with the amino acid sequence difference between subtypes as high as 36%. The sequence differences present a significant challenge for generating monoclonal antibodies (mAbs) that can bind, detect and neutralize all BoNT/F subtypes. We used repertoire cloning of immune mouse antibody variable (V) regions and yeast display to generate a panel of 33 lead single chain Fv (scFv) mAbs that bound one or more BoNT/F subtypes with a median equilibrium dissociation constant (KD) of 4...
2017: PloS One
https://www.readbyqxmd.com/read/28322825/dissection-of-mechanoresponse-elements-in-promoter-sites-of-the-mechanoresponsive-cyr61-gene
#14
Lothar Seefried, Sigrid Mueller-Deubert, Melanie Krug, Almoatazbellah Youssef, Norbert Schuetze, Anita Ignatius, Franz Jakob, Regina Ebert
Mechanotransduction is important for mesenchymal regeneration and differentiation. Exaggerated high or very low impact yields pathological outcome resulting in fracture or tissue atrophy. Pathological strain in animal models was described but tools to dissect the respective stimuli and downstream pathways are limited. We expand the analytical tools to describe DNA strain response elements in a reporter gene approach. Deletion constructs of the human cysteine-rich protein 61 (CYR61) promoter were cloned into luciferase vectors and stably transfected into human telomerase-immortalized mesenchymal stem cells (hMSC-TERT)...
March 16, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28321273/characterization-of-a-new-monoclonal-anti-glypican-3-antibody-specific-to-the-hepatocellular-carcinoma-cell-line-hepg2
#15
Preeyanat Vongchan, Robert J Linhardt
AIM: To characterize the antigen on HepG2 cell that is specifically recognized by a new monoclonal antibody raised against human liver heparan sulfate proteoglycan (HSPG), clone 1E4-1D9. METHODS: The antigen recognized by mAb 1E4-1D9 was immunoprecipitated and its amino acid sequence was analyzed LC/MS. The transmembrane domain, number of cysteine residues, and glycosylation sites were predicted from these entire sequences. Data from amino acid analysis was aligned with glypican-3 (https://www...
March 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28321219/computational-model-reveals-limited-correlation-between-germinal-center-b-cell-subclone-abundancy-and-affinity-implications-for-repertoire-sequencing
#16
Polina Reshetova, Barbera D C van Schaik, Paul L Klarenbeek, Marieke E Doorenspleet, Rebecca E E Esveldt, Paul-Peter Tak, Jeroen E J Guikema, Niek de Vries, Antoine H C van Kampen
Immunoglobulin repertoire sequencing has successfully been applied to identify expanded antigen-activated B-cell clones that play a role in the pathogenesis of immune disorders. One challenge is the selection of the Ag-specific B cells from the measured repertoire for downstream analyses. A general feature of an immune response is the expansion of specific clones resulting in a set of subclones with common ancestry varying in abundance and in the number of acquired somatic mutations. The expanded subclones are expected to have BCR affinities for the Ag higher than the affinities of the naive B cells in the background population...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28320720/moraxella-species-as-potential-sources-of-mcr-like-polymyxin-resistance-determinants
#17
Nicolas Kieffer, Patrice Nordmann, Laurent Poirel
Plasmid-mediated resistance to polymyxins mediated by the MCR-1/-2 determinants has been recently reported in Enterobacteriaceae worldwide. Using PCR-based and cloning strategies, a series of Moraxella species were screened for mcr-like genes. Moraxella spp. that are mainly animal pathogens but may also be human pathogens were identified as potential reservoirs of mcr-like genes.
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28319906/functional-characterization-of-gram-negative-bacteria-from-different-genera-as-multiplex-cadmium-biosensors
#18
Lara Bereza-Malcolm, Sanja Aracic, Ruban Kannan, Gülay Mann, Ashley E Franks
Widespread presence of cadmium in soil and water systems is a consequence of industrial and agricultural processes. Subsequent accumulation of cadmium in food and drinking water can result in accidental consumption of dangerous concentrations. As such, cadmium environmental contamination poses a significant threat to human health. Development of microbial biosensors, as a novel alternative method for in situ cadmium detection, may reduce human exposure by complementing traditional analytical methods. In this study, a multiplex cadmium biosensing construct was assembled by cloning a single-output cadmium biosensor element, cadRgfp, and a constitutively expressed mrfp1 onto a broad-host range vector...
March 16, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28319569/survivin-expression-in-simple-endometrial-polyps-and-tamoxifen-associated-endometrial-polyps
#19
Ayse F Gokmen Karasu, Fatma C Sonmez, Serdar Aydin, Ilknur Adanir, Mustafa Marasli, Gulsah K Ilhan
Endometrial polyps are benign pathologies originating as localized overgrowths of basal endometrium. Risk factors include endogenous and exogenous estrogen excess and tamoxifen (TAM) exposure. Our main objective was to investigate the role of an apoptosis-inhibiting protein, survivin, in endometrial polyps. We performed a cross-sectional, analytical study; our samples were obtained from the archives of Department of Pathology. Sixty samples were included, comprising 20 TAM polyps, 20 simple endometrial polyps, and 20 cases of simple endometrial hyperplasia without atypia not associated with TAM use...
March 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28319085/synergistic-drug-combinations-for-cancer-identified-in-a-crispr-screen-for-pairwise-genetic-interactions
#20
Kyuho Han, Edwin E Jeng, Gaelen T Hess, David W Morgens, Amy Li, Michael C Bassik
Identification of effective combination therapies is critical to address the emergence of drug-resistant cancers, but direct screening of all possible drug combinations is infeasible. Here we introduce a CRISPR-based double knockout (CDKO) system that improves the efficiency of combinatorial genetic screening using an effective strategy for cloning and sequencing paired single guide RNA (sgRNA) libraries and a robust statistical scoring method for calculating genetic interactions (GIs) from CRISPR-deleted gene pairs...
March 20, 2017: Nature Biotechnology
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