keyword
MENU ▼
Read by QxMD icon Read
search

Plasmid

keyword
https://www.readbyqxmd.com/read/29793032/phosphorylated-and-non-phosphorylated-hck-kinase-domains-produced-by-cell-free-protein-expression
#1
Kazushige Katsura, Yuri Tomabechi, Takayoshi Matsuda, Mayumi Yonemochi, Junko Mikuni, Noboru Ohsawa, Takaho Terada, Shigeyuki Yokoyama, Mutsuko Kukimoto-Niino, Chie Takemoto, Mikako Shirouzu
Since phosphorylation is involved in various physiological events, kinases and interacting factors can be potential targets for drug discovery. For the development and improvement of inhibitors from the point of view of mechanistic enzymology, a cell-free protein synthesis system would be advantageous, since it could prepare mutant proteins easily. However, especially in the case of protein kinase, product solubility remains one of the major challenges. To overcome this problem, we prepared a chaperone-supplemented extract from Escherichia coli BL21 cells harboring a plasmid encoding a set of chaperone genes, dnaK, dnaJ, and grpE...
May 21, 2018: Protein Expression and Purification
https://www.readbyqxmd.com/read/29792781/is-bla-ctx-m-1-riding-the-same-plasmid-among-horses-in-sweden-and-france
#2
Agnese Lupo, Marisa Haenni, Estelle Saras, Joanna Gradin, Jean-Yves Madec, Stefan Börjesson
A predominance of the blaCTX-M-1 /IncHI1 plasmid combination in horses has been reported in Czech-Republic, Denmark, and The Netherlands. To clarify a possible specific plasmid epidemiology of blaCTX-M-1 in horses in a European perspective, a collection of 74 extended-spectrum beta-lactamase-producing Escherichia coli recovered from diseased horses in France and Sweden during the period 2009-2014 was investigated in respect of their genetic relatedness, plasmid content, and molecular features. Overall, 80% of E...
May 24, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29792779/association-of-colistin-resistant-kpc-clonal-strains-with-subsequent-infections-and-colonization-and-biofilm-production
#3
Melina Lorraine Ferreira, Bruna Fuga Araújo, Iara Rossi Gonçalves, Sabrina Royer, Paola Amaral Campos, Luiz Gustavo Machado, Deivid William Fonseca Batistão, Cristiane Silveira Brito, Paulo P Gontijo-Filho, Rosineide Marques Ribas
Carbapenemase-producing organisms are pandemic and a significant threat to public health. We investigated the clonal relatedness of colistin-resistant Klebsiella pneumoniae strains producing KPC-type carbapenemase (KPC-KP) causing subsequent infections or colonization. Moreover, we aimed to gain insight into the ability of biofilm production in K. pneumoniae strains producing carbapenemase. Twenty-two consecutive KPC-KP and one KPC-negative strain was identified from an adult intensive care unit in Brazil. Seventy-five percent of isolates that harbored the blaKPC gene exhibited genetic relatedness by pulsed-field gel electrophoresis, and none presented the plasmid-mediated mcr-1 and blaNDM genes...
May 24, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29792369/gene-delivery-in-the-cornea-in-vitro-ex-vivo-evaluation-of-solid-lipid-nanoparticle-based-vectors
#4
Mónica Vicente-Pascual, Andrea Albano, María Á Solinís, Loredana Serpe, Alicia Rodríguez-Gascón, Federica Foglietta, Elisabetta Muntoni, Josune Torrecilla, Ana Del Pozo-Rodríguez, Luigi Battaglia
AIM: Inflammation is a process that underlies sight-threatening ocular surface diseases, and gene supplementation with the plasmid that encodes for p-IL10 will allow the sustained de novo synthesis of the cytokine to occur in corneal cells, and provide a long-term anti-inflammatory effect. This work describes the development of solid lipid nanoparticle systems for the delivery of p-IL10 to transfect the cornea. RESULTS: In vitro, vectors showed suitable features as nonviral vectors (size, ζ-potential, DNA binding, protection and release), and they were able to enter and transfect human corneal epithelial cells...
May 24, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29791251/prevalence-of-ctx-m-type-extended-spectrum-%C3%AE-lactamase-producing-escherichia-coli-b2-o25-st131-h30r-among-residents-in-nonacute-care-facilities-in-japan
#5
Kumiko Kawamura, Kengo Hayashi, Nao Matsuo, Kazuki Kitaoka, Kouji Kimura, Jun-Ichi Wachino, Takaaki Kondo, Yoshitsugu Iinuma, Nobuo Murakami, Shuhei Fujimoto, Yoshichika Arakawa
We investigated the prevalence and characteristics of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli among 258 residents of long-term care facilities (LTCFs) in Japan. Out of 258 fecal samples collected from nine LTCFs between November 2015 and March 2017, we recovered 59 ESBL-producing E. coli isolates. All isolates carried blaCTX-M genes, mainly blaCTX-M-27 (42.4%), blaCTX-M-14 (23.7%), and blaCTX-M-15 (18.6%). The isolates showed 7 serotypes (STs), including ST131 (n = 49, 83.1%) and ST38 (n = 4, 6...
May 23, 2018: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29790974/crisprcasfinder-an-update-of-crisrfinder-includes-a-portable-version-enhanced-performance-and-integrates-search-for-cas-proteins
#6
David Couvin, Aude Bernheim, Claire Toffano-Nioche, Marie Touchon, Juraj Michalik, Bertrand Néron, Eduardo P C Rocha, Gilles Vergnaud, Daniel Gautheret, Christine Pourcel
CRISPR (clustered regularly interspaced short palindromic repeats) arrays and their associated (Cas) proteins confer bacteria and archaea adaptive immunity against exogenous mobile genetic elements, such as phages or plasmids. CRISPRCasFinder allows the identification of both CRISPR arrays and Cas proteins. The program includes: (i) an improved CRISPR array detection tool facilitating expert validation based on a rating system, (ii) prediction of CRISPR orientation and (iii) a Cas protein detection and typing tool updated to match the latest classification scheme of these systems...
May 22, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29790947/antibodies-against-chlamydia-trachomatis-and-ovarian-cancer-risk-in-two-independent-populations
#7
Britton Trabert, Tim Waterboer, Annika Idahl, Nicole Brenner, Louise A Brinton, Julia Butt, Sally B Coburn, Patricia Hartge, Katrin Hufnagel, Federica Inturrisi, Jolanta Lissowska, Alexander Mentzer, Beata Peplonska, Mark E Sherman, Gillian S Wills, Sarah C Woodhall, Michael Pawlita, Nicolas Wentzensen
Background: Pelvic inflammatory disease (PID) has been associated with ovarian cancer risk. To clarify the role of Chlamydia trachomatis and other infectious agents in the development of ovarian cancer, we evaluated the association of serologic markers with incident ovarian cancer using a staged approach in two independent populations. Methods: Studies included: 1) a case-control study in Poland (244 ovarian cancers/556 control subjects) and 2) a prospective nested case-control study in the PLCO Cancer Screening Trial (160 ovarian cancers/159 control subjects)...
May 21, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29790644/crispr-cas9-assisted-multiplex-genome-editing-technique-in-escherichia-coli
#8
Xu Feng, Dongdong Zhao, Xueli Zhang, Xiang Ding, Changhao Bi
Genome editing for site-specific chromosome modification is one of the most significant techniques in biological research. While conventional techniques usually deal with one genomic locus at a time, multiple genomic targets are often required to be modified to develop microbial cell factories. Thus, it is necessary to develop techniques for simultaneous editing of multiple loci. In this work, we developed a CRISPR/Cas9 assisted multiplex genome editing (CMGE) technique in Escherichia coli. With this editing method, all functional parts were assembled into replicable plasmids, and stringent inducible expression systems were used to control Cas9 gene expression, which was to decouple transformation from editing process to increase editing efficiency...
May 23, 2018: Biotechnology Journal
https://www.readbyqxmd.com/read/29790084/cloning-and-expression-of-nlpa-gene-as-dna-vaccine-candidate-against-acinetobacter-baumannii
#9
Rassoul Hashemzehi, Abbas Doosti, Mohammad Kargar, Mojtaba Jaafarinia
Acinetobacter baumannii is one of the highly antibiotic-resistant bacteria that cause infections with high rate of death. This bacterium is one the common causes of infection worldwide leading to endemic and epidemic nosocomial infections. Despite many efforts, there is no effective vaccine against A. baumannii. As NlpA is one of the important antigenic factors in biogenesis of outer membrane vesicles, and OMV-based reported vaccines in A. baumannii stimulated the immune responses, this study was aimed to clone and express nlpA gene in eukaryotic HDF cells and evaluate the induced immunization following the administration of resulting construct as DNA vaccine in BALB/c mice...
May 22, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29789676/the-angiotensin-i-converting-enzyme-insertion-deletion-in-polymorphic-element-codes-for-an-aluya5-rna-that-downregulates-gene-expression
#10
REVIEW
Fernando F P Mafra, Pedro P Gattai, Michel M Macedo, Marcelo A Mori, Ronaldo C Araujo
Angiotensin-I-converting enzyme (ACE) is involved in the synthesis and degradation of important bioactive peptides. The ACE gene has a 287-bp insertion/deletion polymorphism that controls ACE expression through a mechanism that remains elusive. In this study, we found that the 287-bp polymorphic element of the ACE gene, a member of the AluYa5 sub-family of Alu elements, codes for an RNA molecule that controls the levels of ACE mRNA. Transient transfection of a plasmid containing a CMV promoter upstream of the ACE polymorphic element resulted in significant expression of an AluYa5 RNA and reduced ACE mRNA expression as well as ACE enzymatic activity in AD 293 cells...
May 23, 2018: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/29789590/heterozygous-diploid-and-interspecies-scrambleing
#11
Michael J Shen, Yi Wu, Kun Yang, Yunxiang Li, Hui Xu, Haoran Zhang, Bing-Zhi Li, Xia Li, Wen-Hai Xiao, Xiao Zhou, Leslie A Mitchell, Joel S Bader, Yingjin Yuan, Jef D Boeke
SCRaMbLE (Synthetic Chromosome Rearrangement and Modification by LoxP-mediated Evolution) is a genome restructuring technique that can be used in synthetic genomes such as that of Sc2.0, the synthetic yeast genome, which contains hundreds to thousands of strategically positioned loxPsym sites. SCRaMbLE has been used to induce rearrangements in yeast strains harboring one or more synthetic chromosomes, as well as plasmid DNA in vitro and in vivo. Here we describe a collection of heterozygous diploid strains produced by mating haploid semisynthetic Sc2...
May 22, 2018: Nature Communications
https://www.readbyqxmd.com/read/29789577/long-non-coding-rna-gm2199-rescues-liver-injury-and-promotes-hepatocyte-proliferation-through-the-upregulation-of-erk1-2
#12
Qiang Gao, Yunyan Gu, Yanan Jiang, Li Fan, Zixiang Wei, Haobin Jin, Xirui Yang, Lijuan Wang, Xuguang Li, Sheng Tai, Baofeng Yang, Yan Liu
Long non-coding RNAs (lncRNAs) are a new class of regulators of various human diseases. This study was designed to explore the potential role of lncRNAs in experimental hepatic damage. In vivo hepatic damage in mice and in vitro hepatocyte damage in AML12 and NCTC1469 cells were induced by carbon tetrachloride (CCl4 ) treatments. Expression profiles of lncRNAs and mRNAs were analyzed by microarray. Bioinformatics analyses were conducted to predict the potential functions of differentially expressed lncRNAs with respect to hepatic damage...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29789561/l-scramble-as-a-tool-for-light-controlled-cre-mediated-recombination-in-yeast
#13
Lena Hochrein, Leslie A Mitchell, Karina Schulz, Katrin Messerschmidt, Bernd Mueller-Roeber
The synthetic yeast genome constructed by the International Synthetic Yeast Sc2.0 consortium adds thousands of loxPsym recombination sites to all 16 redesigned chromosomes, allowing the shuffling of Sc2.0 chromosome parts by the Cre-loxP recombination system thereby enabling genome evolution experiments. Here, we present L-SCRaMbLE, a light-controlled Cre recombinase for use in the yeast Saccharomyces cerevisiae. L-SCRaMbLE allows tight regulation of recombinase activity with up to 179-fold induction upon exposure to red light...
May 22, 2018: Nature Communications
https://www.readbyqxmd.com/read/29789502/detection-of-dystrophin-dp71-in-human-skeletal-muscle-using-an-automated-capillary-western-assay-system
#14
Tatsuya Kawaguchi, Emma Tabe Eko Niba, Abdul Qawee Mahyoob Rani, Yoshiyuki Onishi, Makoto Koizumi, Hiroyuki Awano, Masaaki Matsumoto, Masashi Nagai, Shinobu Yoshida, Sachiko Sakakibara, Naoyuki Maeda, Osamu Sato, Hisahide Nishio, Masafumi Matsuo
BACKGROUND: Dystrophin Dp71 is one of the isoforms produced by the DMD gene which is mutated in patients with Duchenne muscular dystrophy (DMD). Although Dp71 is expressed ubiquitously, it has not been detected in normal skeletal muscle. This study was performed to assess the expression of Dp71 in human skeletal muscle. METHODS: Human skeletal muscle RNA and tissues were obtained commercially. Mouse skeletal muscle was obtained from normal and DMDmdx mice. Dp71 mRNA and protein were determined by reverse-transcription PCR and an automated capillary Western assay system, the Simple Western, respectively...
May 23, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29789427/impact-of-tobacco-specific-nitrosamine-derived-dna-adducts-on-the-efficiency-and-fidelity-of-dna-replication-in-human-cells
#15
Hua Du, Jiapeng Leng, Pengcheng Wang, Lin Li, Yinsheng Wang
The tobacco-derived nitrosamines 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and N '-nitrosonornicotine (NNN) are known human carcinogens. Following metabolic activation, NNK and NNN can induce a number of DNA lesions, including several 4-(3-pyridyl)-4-oxobut-1-yl (POB) adducts. However, it remains unclear to what extent these lesions affect the efficiency and accuracy of DNA replication and how their replicative bypass is influenced by translesion synthesis (TLS) DNA polymerases. In this study, we investigated the effects of three stable POB DNA adducts (i...
May 22, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29788909/whole-genome-analysis-reveals-the-diversity-and-evolutionary-relationships-between-necrotic-enteritis-causing-strains-of-clostridium-perfringens
#16
Jake A Lacey, Theodore R Allnutt, Ben Vezina, Thi Thu Hao Van, Thomas Stent, Xiaoyan Han, Julian I Rood, Ben Wade, Anthony L Keyburn, Torsten Seemann, Honglei Chen, Volker Haring, Priscilla A Johanesen, Dena Lyras, Robert J Moore
BACKGROUND: Clostridium perfringens causes a range of diseases in animals and humans including necrotic enteritis in chickens and food poisoning and gas gangrene in humans. Necrotic enteritis is of concern in commercial chicken production due to the cost of the implementation of infection control measures and to productivity losses. This study has focused on the genomic analysis of a range of chicken-derived C. perfringens isolates, from around the world and from different years. The genomes were sequenced and compared with 20 genomes available from public databases, which were from a diverse collection of isolates from chickens, other animals, and humans...
May 22, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29788535/cyp2a5-promoter-based-gene-reporter-assay-a-novel-design-of-cell-based-bioassay-for-toxicity-prediction
#17
A'edah Abu-Bakar, Hao Hu, Matti A Lang
The murine cytochrome P450 2a5 (Cyp2a5) gene is regulated by complex interactions of various stress-activated transcription factors (TFs). Elevated Cyp2a5 transcription under chemical-induced stress conditions is achieved by interplay between the various TFs-including as aryl hydrocarbon receptor (AhR) and nuclear factor (erythroid-derived 2)-like 2 wild-type (Nrf2)-at the "stress-responding" cluster of response elements on the Cyp2a5 promoter, as well as through mRNA stabilisation mediated by interaction of the stress-activated heterogeneous nuclear ribonucleoprotein A1 (hnRNP A1) with the 3'UTR of the CYP2A5 mRNA...
May 22, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29787588/angiogenic-and-pleiotropic-effects-of-vegf165-and-hgf-combined-gene-therapy-in-a-rat-model-of-myocardial-infarction
#18
Pavel I Makarevich, Konstantin V Dergilev, Zoya I Tsokolaeva, Maria A Boldyreva, Evgeniy K Shevchenko, Evgeny V Gluhanyuk, Julia O Gallinger, Mikhail Yu Menshikov, Yelena V Parfyonova
Since development of plasmid gene therapy for therapeutic angiogenesis by J. Isner this approach was an attractive option for ischemic diseases affecting large cohorts of patients. However, first placebo-controlled clinical trials showed its limited efficacy questioning further advance to practice. Thus, combined methods using delivery of several angiogenic factors got into spotlight as a way to improve outcomes. This study provides experimental proof of concept for a combined approach using simultaneous delivery of VEGF165 and HGF genes to alleviate consequences of myocardial infarction (MI)...
2018: PloS One
https://www.readbyqxmd.com/read/29787365/kpc-2-producing-st101-klebsiella-pneumoniae-from-bloodstream-infection-in-india
#19
Chaitra Shankar, Baby Abirami Shankar, Abi Manesh, Balaji Veeraraghavan
This study characterizes KPC-2 producing Klebsiella pneumoniae belonging to ST101. Whole genome sequencing using the Ion Torrent PGM platform with 400 bp chemistry was performed. blaKPC-2 was found on an IncFIIK plasmid associated with ISKpn6 and ISKpn7 without Tn4401. This is the first report of KPC-2 K. pneumoniae from bacteremia in India. The isolate also coded for other resistance genes such as aadA1, aadA2, armA, aac(3)-Ild, aac(6')-Ild for aminoglycoside; blaSHV-11, blaTEM-1B, blaOXA-9, for β-lactams and aac(6')-Ild, oqxA, oqxB, qnrB1 for fluoroquinolones...
May 22, 2018: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29786910/agathisflavone-isolated-from-anacardium-occidentale-suppresses-sirt1-mediated-neuroinflammation-in-bv2-microglia-and-neurotoxicity-in-appswe-transfected-sh-sy5y-cells
#20
Ravikanth Velagapudi, Olusiji O Ajileye, Uchechukwu Okorji, Priya Jain, Mutalib A Aderogba, Olumayokun A Olajide
Agathisflavone is a bioactive compound in Anacardium occidentale. In this study, we investigated inhibition neuroinflammation in BV2 microglia by agathisflavone. Neuroprotective activity of the compound was investigated in differentiated SH-SY5Y cells. Experiments in lipopolysaccharide (LPS)-activated BV2 microglia showed that pretreatment with agathisflavone (5-20 μM) produced significant reduction in the release of tumour necrosis factor-α, interleukin-6, interleukin-1β, NO, and PGE2 from the cells. Immunoblotting experiments also revealed that agathisflavone reduced levels of iNOS and COX-2 protein...
May 22, 2018: Phytotherapy Research: PTR
keyword
keyword
17114
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"