keyword
MENU ▼
Read by QxMD icon Read
search

recombinant DNA technology

keyword
https://www.readbyqxmd.com/read/28733249/dna-based-random-key-generation-and-management-for-otp-encryption
#1
Yunpeng Zhang, Xin Liu, Manhui Sun
One-time pad (OTP) is a principle of key generation applied to the stream ciphering method which offers total privacy. The OTP encryption scheme has proved to be unbreakable in theory, but difficult to realize in practical applications. Because OTP encryption specially requires the absolute randomness of the key, its development has suffered from dense constraints. DNA cryptography is a new and promising technology in the field of information security. DNA chromosomes storing capabilities can be used as one-time pad structures with pseudo-random number generation and indexing in order to encrypt the plaintext messages...
July 18, 2017: Bio Systems
https://www.readbyqxmd.com/read/28730788/topoisomerase-i-deregulation-in-laryngeal-squamous-cell-carcinomas-based-on-tissue-microarray-analysis
#2
Theodoros A Papadas, Evangelos Tsiambas, Nicholas S Mastronikolis, Andreas Karameris, Stylianos N Mastronikolis, Athanasios T Papadas, Panagiotis P Fotiades, Vasileios Ragos
PURPOSE: Topoisomerases (types: I/IIa-b/IIIa-b) represent a super-family of nucleic enzymes involved in the DNA replication, transcription, recombination, and also chromosome topological formation. Topoisomerase's I (Topo I- gene location: 20q12) aberrant expression is a frequent genetic event in a variety of solid malignancies. Topo I inhibition promotes cell death due to DNA damage and for this reason it is a target for specific targeted chemotherapy (camptothecin, topotecan, irinotecan)...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28724082/prospective-targeted-recombination-and-genetic-gains-for-quantitative-traits-in-maize
#3
Rex Bernardo
Advances in clustered regularly interspaced short palindromic repeats (CRISPR) technology have allowed targeted recombination in specific DNA sequences in yeast (). My objective was to determine if the selection gains from targeted recombination are large enough to warrant the development of targeted recombination technology in plants. Genomewide marker effects for quantitative traits in two maize ( L.) experiments were used to identify targeted recombination points that would maximize the per-chromosome genetic gains in a given cross...
July 2017: Plant Genome
https://www.readbyqxmd.com/read/28715998/detection-of-active-transposable-elements-in-arabidopsis-thaliana-using-oxford-nanopore-sequencing-technology
#4
Emilie Debladis, Christel Llauro, Marie-Christine Carpentier, Marie Mirouze, Olivier Panaud
BACKGROUND: Transposables elements (TEs) contribute to both structural and functional dynamics of most eukaryotic genomes. Because of their propensity to densely populate plant and animal genomes, the precise estimation of the impact of transposition on genomic diversity has been considered as one of the main challenges of today's genomics. The recent development of NGS (next generation sequencing) technologies has open new perspectives in population genomics by providing new methods for high throughput detection of Transposable Elements-associated Structural Variants (TEASV)...
July 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28710608/vaccine-platform-recombinant-measles-virus
#5
REVIEW
Michael D Mühlebach
The classic development of vaccines is lengthy, tedious, and may not necessarily be successful as demonstrated by the case of HIV. This is especially a problem for emerging pathogens that are newly introduced into the human population and carry the inherent risk of pandemic spread in a naïve population. For such situations, a considerable number of different platform technologies are under development. These are also under development for pathogens, where directly derived vaccines are regarded as too complicated or even dangerous due to the induction of inefficient or unwanted immune responses causing considerable side-effects as for dengue virus...
July 14, 2017: Virus Genes
https://www.readbyqxmd.com/read/28694259/high-efficiency-non-mosaic-crispr-mediated-knock-in-and-mutations-in-f0-xenopus
#6
Yetki Aslan, Emmanuel Tadjuidje, Aaron M Zorn, Sang-Wook Cha
The revolution in CRISPR-mediated genome editing has enabled the mutation and insertion of virtually any DNA sequence, particularly in cell culture where selection can be used to recover relatively rare homologous recombination events. The efficient use of this technology in animal models still presents a number of challenges including the time to establish mutant lines, mosaic gene editing in founder animals, and low homologous recombination rates. Here we report a method for CRISPR-mediated genome editing in Xenopus oocytes with homology-dependent repair (HDR) that provides efficient non-mosaic targeted insertion of small DNA fragments of 40-50 nucleotides, in 4...
July 10, 2017: Development
https://www.readbyqxmd.com/read/28690087/an-exo-probe-based-recombinase-polymerase-amplification-assay-for-the-rapid-detection-of-porcine-parvovirus
#7
Jian-Chang Wang, Li-Bing Liu, Qing-An Han, Jin-Feng Wang, Wan-Zhe Yuan
Recombinase polymerase amplification (RPA), an isothermal amplification technology, has been developed as an alternative to PCR in pathogen detection. A real-time RPA assay (rt-RPA) was developed to detect the porcine parvovirus (PPV) using primers and exo probe specific for the VP2 gene. The amplification was performed at 39°C for 20min. There was no cross-reaction with other pathogens tested. Using the recombinant plasmid pPPV-VP2 as template, the analytical sensitivity was 103 copies. The assay performance was evaluated by testing 115 field samples by rt-RPA and a real-time PCR assay...
July 6, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28679719/ion-channels-history-diversity-and-impact
#8
Stephan Brenowitz, Ian Duguid, Paul J Kammermeier
From patch-clamp techniques to recombinant DNA technologies, three-dimensional protein modeling, and optogenetics, diverse and sophisticated methods have been used to study ion channels and how they determine the electrical properties of cells.
July 5, 2017: Cold Spring Harbor Protocols
https://www.readbyqxmd.com/read/28671645/qtl-mapping-and-crispr-cas9-editing-to-identify-a-drug-resistance-gene-in-toxoplasma-gondii
#9
Bang Shen, Robin H Powell, Michael S Behnke
Scientific knowledge is intrinsically linked to available technologies and methods. This article will present two methods that allowed for the identification and verification of a drug resistance gene in the Apicomplexan parasite Toxoplasma gondii, the method of Quantitative Trait Locus (QTL) mapping using a Whole Genome Sequence (WGS) -based genetic map and the method of Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/Cas9 -based gene editing. The approach of QTL mapping allows one to test if there is a correlation between a genomic region(s) and a phenotype...
June 22, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28668116/macrobac-new-technologies-for-robust-and-efficient-large-scale-production-of-recombinant-multiprotein-complexes
#10
Scott D Gradia, Justin P Ishida, Miaw-Sheue Tsai, Chris Jeans, John A Tainer, Jill O Fuss
Recombinant expression of large, multiprotein complexes is essential and often rate limiting for determining structural, biophysical, and biochemical properties of DNA repair, replication, transcription, and other key cellular processes. Baculovirus-infected insect cell expression systems are especially well suited for producing large, human proteins recombinantly, and multigene baculovirus systems have facilitated studies of multiprotein complexes. In this chapter, we describe a multigene baculovirus system called MacroBac that uses a Biobricks-type assembly method based on restriction and ligation (Series 11) or ligation-independent cloning (Series 438)...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28662748/institutional-oversight-of-occupational-health-and-safety-for-research-programs-involving-biohazards
#11
Melissa C Dyson, Calvin B Carpenter, Lesley A Colby
Research with hazardous biologic materials (biohazards) is essential to the progress of medicine and science. The field of microbiology has rapidly advanced over the years, partially due to the development of new scientific methods such as recombinant DNA technology, synthetic biology, viral vectors, and the use of genetically modified animals. This research poses a potential risk to personnel as well as the public and the environment. Institutions must have appropriate oversight and take appropriate steps to mitigate the risks of working with these biologic hazards...
June 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28653169/trust-in-science-crispr-cas9-and-the-ban-on-human-germline-editing
#12
Stephan Guttinger
In 2015 scientists called for a partial ban on genome editing in human germline cells. This call was a response to the rapid development of the CRISPR-Cas9 system, a molecular tool that allows researchers to modify genomic DNA in living organisms with high precision and ease of use. Importantly, the ban was meant to be a trust-building exercise that promises a 'prudent' way forward. The goal of this paper is to analyse whether the ban can deliver on this promise. To do so the focus will be put on the precedent on which the current ban is modelled, namely the Asilomar ban on recombinant DNA technology...
June 26, 2017: Science and Engineering Ethics
https://www.readbyqxmd.com/read/28645767/assessing-the-potential-of-rad-sequencing-to-resolve-phylogenetic-relationships-within-species-radiations-the-fly-genus-chiastocheta-diptera-anthomyiidae-as-a-case-study
#13
Tomasz Suchan, Anahí Espíndola, Sereina Rutschmann, Brent C Emerson, Kevin Gori, Christophe Dessimoz, Nils Arrigo, Michał Ronikier, Nadir Alvarez
Determining phylogenetic relationships among recently diverged species has long been a challenge in evolutionary biology. Cytoplasmic DNA markers, which have been widely used, notably in the context of molecular barcoding, have not always proved successful in resolving such phylogenies. However, with the advent of next-generation-sequencing technologies and associated techniques of reduced genome representation, phylogenies of closely related species have been resolved at a much higher detail in the last couple of years...
June 21, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28644690/advances-in-the-development-of-human-protein-microarrays
#14
Jessica Duarte, Jonathan M Blackburn
High-content protein microarrays in principle enable the functional interrogation of the human proteome in a broad range of applications, including biomarker discovery, profiling of immune responses, identification of enzyme substrates, and quantifying protein-small molecule, protein-protein and protein-DNA/RNA interactions. As with other microarrays, the underlying proteomic platforms are under active technological development and a range of different protein microarrays are now commercially available. However, deciphering the differences between these platforms to identify the most suitable protein microarray for the specific research question is not always straightforward...
June 23, 2017: Expert Review of Proteomics
https://www.readbyqxmd.com/read/28643258/crispr-cas9-mediated-targeted-knockin-of-exogenous-reporter-genes-in-zebrafish
#15
Atsuo Kawahara
Genome editing technologies such as ZFN, TALEN, and CRISPR/Cas9 efficiently induce DNA double-stranded breaks (DSBs) at a targeted genomic locus, often resulting in a frameshift-mediated target gene disruption. It remains difficult to perform targeted integration of exogenous genes by genome editing technologies. DSBs can be restored through DNA repair mechanisms, such as non-homologous end joining (NHEJ), microhomology-mediated end joining (MMEJ), and homologous recombination (HR). It is well known that HR facilitates homology-dependent integration of donor DNA template into a targeted locus...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28634346/generating-conditional-gene-knockouts-in-plasmodium-a-toolkit-to-produce-stable-dicre-recombinase-expressing-parasite-lines-using-crispr-cas9
#16
Ellen Knuepfer, Marta Napiorkowska, Christiaan van Ooij, Anthony A Holder
Successful establishment of CRISPR/Cas9 genome editing technology in Plasmodium spp. has provided a powerful tool to transform Plasmodium falciparum into a genetically more tractable organism. Conditional gene regulation approaches are required to study the function of gene products critical for growth and erythrocyte invasion of blood stage parasites. Here we employ CRISPR/Cas9 to facilitate use of the dimerisable Cre-recombinase (DiCre) that is frequently used to mediate the excision and loss of loxP-flanked DNA sequences in a rapamycin controlled manner...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622634/type-of-gonadotropin-used-during-controlled-ovarian-stimulation-induces-differential-gene-expression-in-human-cumulus-cells-a-randomized-study
#17
María Cruz, Antonio Requena, David Agudo, Juan Antonio García-Velasco
BACKGROUND: The cumulus-oocyte complex plays a central role in the regulation of folliculogenesis where it is important for the maturation, reprogramming, and fertilization of oocytes. Consequently, cumulus cell gene expression profiling is being explored as a promising method for assessing oocyte competence in the near future. Through DNA microarray technology, we analyzed the potential differences in the gene expression profiles of cumulus cells from preovulatory follicles after controlled ovarian stimulation using different types of gonadotropins...
June 8, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28612264/application-of-recombinant-hemagglutinin-proteins-as-alternative-antigen-standards-for-pandemic-influenza-vaccines
#18
Yejin Choi, Seong Yi Kwon, Ho Jung Oh, Sunbo Shim, Seokkee Chang, Hye Joo Chung, Do Keun Kim, Younsang Park, Younghee Lee
OBJECTIVES: The single radial immunodiffusion (SRID) assay, used to quantify hemagglutinin (HA) in influenza vaccines, requires reference reagents; however, because centralized production of reference reagents may slow the emergency deployment of vaccines, alternatives are needed. RESULTS: We investigated the production of HA proteins using recombinant DNA technology, rather than a traditional egg-based production process. The HA proteins were then used in an SRID assay as a reference antigen...
June 13, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28602961/progress-and-biotechnological-prospects-in-fish-transgenesis
#19
REVIEW
Fernanda M P Tonelli, Samyra M S N Lacerda, Flávia C P Tonelli, Guilherme M J Costa, Luiz Renato de França, Rodrigo R Resende
The history of transgenesis is marked by milestones such as the development of cellular transdifferentiation, recombinant DNA, genetic modification of target cells, and finally, the generation of simpler genetically modified organisms (e.g. bacteria and mice). The first transgenic fish was developed in 1984, and since then, continuing technological advancements to improve gene transfer have led to more rapid, accurate, and efficient generation of transgenic animals. Among the established methods are microinjection, electroporation, lipofection, viral vectors, and gene targeting...
June 8, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28599921/molecular-advances-in-microbial-aminopeptidases
#20
REVIEW
Arya Nandan, Kesavan Madhavan Nampoothiri
Aminopeptidases are exopeptidases that catalyze the hydrolysis of amino acid residues from the N terminus of peptides and proteins. They are widely and diversely used for protein hydrolysis in industrial and research applications. They form a large enzyme family in microorganisms and most of the sequenced microbial genomes contain several aminopeptidase coding genes. Various approaches are being used to enhance the yield and desired properties of these enzymes to make it more suited for industrial applications...
May 19, 2017: Bioresource Technology
keyword
keyword
78352
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"