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https://www.readbyqxmd.com/read/29678790/development-of-enzymatically-active-bacterial-cellulose-membranes-through-stable-immobilization-of-an-engineered-%C3%AE-galactosidase
#1
Berta N Estevinho, Nuria Samaniego, David Talens-Perales, Maria José Fabra, Amparo López-Rubio, Julio Polaina, Julia Marín-Navarro
Enzymatically-active bacterial cellulose (BC) was prepared by non-covalent immobilization of a hybrid enzyme composed by a β-galactosidase from Thermotoga maritima (TmLac) and a carbohydrate binding module (CBM2) from Pyrococcus furiosus. TmLac-CBM2 protein was bound to BC, with higher affinity at pH 6.5 than at pH 8.5 and with high specificity compared to the non-engineered enzyme. Both hydrated (HBC) and freeze-dried (DBC) bacterial cellulose showed equivalent enzyme binding efficiencies. Initial reaction rate of HBC-bound enzyme was higher than DBC-bound and both of them were lower than the free enzyme...
April 17, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29678510/corrigendum-to-dual-chemotactic-factors-secreting-human-amniotic-mesenchymal-stem-cells-via-talen-mediated-gene-editing-enhanced-angiogenesis-int-j-cardiol-260-2018-156-162
#2
In Sil Jeong, Youngjin Park, Hyun Aae Ryu, Hyun Sook An, Ju Hye Han, Sung-Whan Kim
No abstract text is available yet for this article.
April 18, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29672693/metabolic-and-genomic-characterization-of-stress-tolerant-industrial-saccharomyces-cerevisiae-strains-from-talens-assisted-multiplex-editing
#3
Yuman Gan, Yuping Lin, Yufeng Guo, Xianni Qi, Qinhong Wang
TALENs-assisted multiplex editing (TAME) toolbox was previously established and used to successfully enhance ethanol-stress tolerance of S. cerevisiae laboratory strain. Here, the TAME toolbox was harnessed to improve and elucidate stress tolerances of S. cerevisiae industrial strain. One osmotolerant strain and one thermotolerant strain were selected from the mutant library generated by TAME at corresponding stress conditions, and exhibited 1.2- to 1.3-fold increases of fermentation capacities, respectively...
April 17, 2018: FEMS Yeast Research
https://www.readbyqxmd.com/read/29657233/reproductive-technologies-for-the-generation-and-maintenance-of-valuable-animal-strains
#4
Takehito Kaneko
Many types of mutant and genetically engineered strains have been produced in various animal species. Their numbers have dramatically increased in recent years, with new strains being rapidly produced using genome editing techniques. In the rat, it has been difficult to produce knockout and knock-in strains because the establishment of stem cells has been insufficient. However, a large number of knockout and knock-in strains can currently be produced using genome editing techniques, including zinc-finger nuclease (ZFN), transcription activator-like effector nuclease (TALEN), and the clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated protein 9 (Cas9) system...
April 14, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29656128/agrobacterium-rhizogenes-mediated-transformation-of-a-dioecious-plant-model-silene-latifolia
#5
Vojtech Hudzieczek, Radim Cegan, Tomas Cermak, Nela Bacovska, Zuzana Machalkova, Karel Dolezal, Lucie Plihalova, Daniel Voytas, Roman Hobza, Boris Vyskot
Silene latifolia serves as a model species to study dioecy, the evolution of sex chromosomes, dosage compensation and sex-determination systems in plants. Currently, no protocol for genetic transformation is available for this species, mainly because S. latifolia is considered recalcitrant to in vitro regeneration and infection with Agrobacterium tumefaciens. Using cytokinins and their synthetic derivatives, we markedly improved the efficiency of regeneration. Several agrobacterial strains were tested for their ability to deliver DNA into S...
April 12, 2018: New Biotechnology
https://www.readbyqxmd.com/read/29652634/emerging-applications-of-genome-editing-technology-to-examine-functionality-of-gwas-associated-variants-for-complex-traits
#6
Andrew J P Smith, Panos Deloukas, Patricia B Munroe
Over the last decade, genome-wide association studies (GWAS) have propelled the discovery of thousands of loci associated with complex diseases. The focus is now turning towards the function of these association signals, determining the causal variant(s) amongst those in strong linkage disequilibrium, and identifying their underlying mechanisms, such as long-range gene regulation. Genome-editing techniques utilising zinc-finger nucleases (ZFN), transcription activator-like effector nucleases (TALENs) and clustered regularly-interspaced short palindromic repeats with Cas9 nuclease (CRISPR-Cas9), are becoming the tools of choice to establish functionality for these variants, due to the ability to assess effects of single variants in vivo...
April 13, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29626786/dynamics-of-dual-fluorescent-polymersomes-with-durable-integrity-in-living-cancer-cells-and-zebrafish-embryos
#7
Sven H C Askes, Nelli Bossert, Jeroen Bussmann, Victorio Saez Talens, Michael S Meijer, Roxanne E Kieltyka, Alexander Kros, Sylvestre Bonnet, Doris Heinrich
The long-term fate of biomedical nanoparticles after endocytosis is often only sparsely addressed in vitro and in vivo, while this is a crucial parameter to conclude on their utility. In this study, dual-fluorescent polyisobutylene-polyethylene glycol (PiB-PEG) polymersomes were studied for several days in vitro and in vivo. In order to optically track the vesicles' integrity, one fluorescent probe was located in the membrane and the other in the aqueous interior compartment. These non-toxic nanovesicles were quickly endocytosed in living A549 lung carcinoma cells but unusually slowly transported to perinuclear lysosomal compartments, where they remained intact and luminescent for at least 90 h without being exocytosed...
March 22, 2018: Biomaterials
https://www.readbyqxmd.com/read/29621239/distinct-interactions-of-sox5-and-sox10-in-fate-specification-of-pigment-cells-in-medaka-and-zebrafish
#8
Yusuke Nagao, Hiroyuki Takada, Motohiro Miyadai, Tomoko Adachi, Ryoko Seki, Yasuhiro Kamei, Ikuyo Hara, Yoshihito Taniguchi, Kiyoshi Naruse, Masahiko Hibi, Robert N Kelsh, Hisashi Hashimoto
Mechanisms generating diverse cell types from multipotent progenitors are fundamental for normal development. Pigment cells are derived from multipotent neural crest cells and their diversity in teleosts provides an excellent model for studying mechanisms controlling fate specification of distinct cell types. Zebrafish have three types of pigment cells (melanocytes, iridophores and xanthophores) while medaka have four (three shared with zebrafish, plus leucophores), raising questions about how conserved mechanisms of fate specification of each pigment cell type are in these fish...
April 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29617316/study-of-photochemical-cytosine-to-uracil-transition-via-ultrafast-photo-cross-linking-using-vinylcarbazole-derivatives-in-duplex-dna
#9
Siddhant Sethi, Shigetaka Nakamura, Kenzo Fujimoto
Gene therapies, including genome editing, RNAi, anti-sense technology and chemical DNA editing are becoming major methods for the treatment of genetic disorders. Techniques like CRISPR-Cas9, zinc finger nuclease (ZFN) and transcription activator-like effector-based nuclease (TALEN) are a few such enzymatic techniques. Most enzymatic genome editing techniques have their disadvantages. Thus, non-enzymatic and non-invasive technologies for nucleic acid editing has been reported in this study which might possess some advantages over the older methods of DNA manipulation...
April 4, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29608237/designer-nuclease-mediated-gene-correction-via-homology-directed-repair-in-an-in-vitro-model-of-canine-hemophilia-b
#10
Thorsten Bergmann, Eric Ehrke-Schulz, Jian Gao, Maren Schiwon, Verena Schildgen, Stephan David, Oliver Schildgen, Anja Ehrhardt
BACKGROUND: Gene correction at specific target loci provides a powerful strategy to overcome genetic diseases. Here we aimed at using an in vitro model for canine hemophilia B containing a single point mutation in the catalytic domain of the canine coagulation factor IX (cFIX) gene. To correct the defective gene via homology-directed repair (HDR), we designed transcription-activator like effector nucleases (TALENs) and clustered regularly interspaced short palindromic repeats including Cas9 (CRISPR/Cas9) for introduction of double strand breaks at the mutation site...
April 2, 2018: Journal of Gene Medicine
https://www.readbyqxmd.com/read/29608092/don-bloch-award-acceptance-speech-2017
#11
Mary R Talen
Provides Dr. Mary Talen's acceptance speech for the 2017 CFHA Don Bloch Award. (PsycINFO Database Record
March 2018: Families, Systems & Health: the Journal of Collaborative Family Healthcare
https://www.readbyqxmd.com/read/29608091/nomination-of-mary-talen-phd-for-the-2017-cfha-don-bloch-award
#12
Aimee Burke Valeras
Provides the nomination letter of Mary Talen, PhD, for the 2017 CFHA's Don Bloch Award. Dr. Mary Talen is a psychologist with an unwavering ability to see the humanness of every individual who interacts with the community health center and residency she works at-patient, staff, faculty, or resident-and her perspective impacts everyone that surrounds her. The nomination details her intellectual, behavioral, and relational qualities as a professional. (PsycINFO Database Record
March 2018: Families, Systems & Health: the Journal of Collaborative Family Healthcare
https://www.readbyqxmd.com/read/29604249/requirement-of-zebrafish-pcdh10a-and-pcdh10b-in-melanocyte-precursor-migration
#13
Jason S Williams, Jessica Y Hsu, Christy Cortez Rossi, Kristin Bruk Artinger
Melanocytes derive from neural crest cells, which are a highly migratory population of cells that play an important role in pigmentation of the skin and epidermal appendages. In most vertebrates, melanocyte precursor cells migrate solely along the dorsolateral pathway to populate the skin. However, zebrafish melanocyte precursors also migrate along the ventromedial pathway, in route to the yolk, where they interact with other neural crest derivative populations. Here, we demonstrate the requirement for zebrafish paralogs pcdh10a and pcdh10b in zebrafish melanocyte precursor migration...
March 28, 2018: Developmental Biology
https://www.readbyqxmd.com/read/29601977/surf1-knockout-cloned-pigs-early-onset-of-a-severe-lethal-phenotype
#14
C Quadalti, D Brunetti, I Lagutina, R Duchi, A Perota, G Lazzari, R Cerutti, I Di Meo, M Johnson, E Bottani, P Crociara, C Corona, S Grifoni, V Tiranti, E Fernandez-Vizarra, A J Robinson, C Viscomi, C Casalone, M Zeviani, C Galli
Leigh syndrome (LS) associated with cytochrome c oxidase (COX) deficiency is an early onset, fatal mitochondrial encephalopathy, leading to multiple neurological failure and eventually death, usually in the first decade of life. Mutations in SURF1, a nuclear gene encoding a mitochondrial protein involved in COX assembly, are among the most common causes of LS. LSSURF1 patients display severe, isolated COX deficiency in all tissues, including cultured fibroblasts and skeletal muscle. Recombinant, constitutive SURF1-/- mice show diffuse COX deficiency, but fail to recapitulate the severity of the human clinical phenotype...
March 27, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29601858/-applications-of-gene-editing-technologies-to-cellular-therapies
#15
REVIEW
Lindsay A M Rein, Haeyoon Yang, Nelson J Chao
Hematologic malignancies are characterized by genetic heterogeneity making classic gene therapy with a goal of correcting one genetic defect ineffective in many of these diseases. Despite initial tribulations, gene therapy, as a field, has grown by leaps and bounds with the recent development of gene editing techniques including zinc-finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and clustered regularly interspaced short palindromic repeat (CRISPR) sequences and CRISPR-associated protein-9 (Cas9) nuclease or CRISPR/Cas9...
March 27, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29583154/comparison-of-the-editing-patterns-and-editing-efficiencies-of-talen-and-crispr-cas9-when-targeting-the-human-ccr5-gene
#16
Arildo Nerys-Junior, Luciene P Braga-Dias, Paula Pezzuto, Vinícius Cotta-de-Almeida, Amilcar Tanuri
The human C-C chemokine receptor type-5 (CCR5) is the major transmembrane co-receptor that mediates HIV-1 entry into target CD4+ cells. Gene therapy to knock-out the CCR5 gene has shown encouraging results in providing a functional cure for HIV-1 infection. In gene therapy strategies, the initial region of the CCR5 gene is a hotspot for producing functional gene knock-out. Such target gene editing can be done using programmable endonucleases such as transcription activator-like effector nucleases (TALEN) or clustered regularly interspaced short palindromic repeats (CRISPR-Cas9)...
March 19, 2018: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/29573234/modeling-autism-in-non-human-primates-opportunities-and-challenges
#17
REVIEW
Hui Zhao, Yong-Hui Jiang, Yong Q Zhang
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by social communication deficits and restricted, repetitive patterns of behavior. For more than a decade, genetically-modified, risk factor-induced, as well as naturally occurring rodent models for ASD have been used as the most predominant tools to dissect the molecular and circuitry mechanisms underlying ASD. However, the apparent evolutionary differences in terms of social behavior and brain anatomy between rodents and humans have become an issue of debate regarding the translational value of rodent models for studying ASD...
March 23, 2018: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/29567616/age-dependent-regulation-of-antioxidant-genes-by-p38%C3%AE-mapk-in-the-liver
#18
Salvador Pérez, Sergio Rius-Pérez, Ana M Tormos, Isabela Finamor, Ángel R Nebreda, Raquel Taléns-Visconti, Juan Sastre
p38α is a redox sensitive MAPK activated by pro-inflammatory cytokines and environmental, genotoxic and endoplasmic reticulum stresses. The aim of this work was to assess whether p38α controls the antioxidant defense in the liver, and if so, to elucidate the mechanism(s) involved and the age-related changes. For this purpose, we used liver-specific p38α-deficient mice at two different ages: young-mice (4 months-old) and old-mice (24 months-old). The liver of young p38α knock-out mice exhibited a decrease in GSH levels and an increase in GSSG/GSH ratio and malondialdehyde levels...
February 17, 2018: Redox Biology
https://www.readbyqxmd.com/read/29565478/the-significant-role-of-atg5-in-the-maintenance-of-normal-functions-of-mc3t3-e1-osteoblast
#19
Y-M Weng, C-R Ke, J-Z Kong, H Chen, J-J Hong, D-S Zhou
OBJECTIVE: To observe the effects of autophagy-related gene 5 (ATG5) on the proliferation, differentiation, and apoptosis of Mc3T3-E1 osteoblast as well as the effects of ATG5 on apoptosis of osteoblasts under the conditions of non-oxidative stress and oxidative stress. MATERIALS AND METHODS: ATG5 overexpressing and silencing cell lines were established in this experiment with lentiviral vector and transcription activator-like effect or nuclease (Talen) technique, respectively, using Mc3T3-E1 cells...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29562705/crispr-cas9-technology-as-an-emerging-tool-for-targeting-amyotrophic-lateral-sclerosis-als
#20
REVIEW
Ewa Kruminis-Kaszkiel, Judyta Juranek, Wojciech Maksymowicz, Joanna Wojtkiewicz
The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein-9 nuclease (Cas9) is a genome editing tool that has recently caught enormous attention due to its novelty, feasibility, and affordability. This system naturally functions as a defense mechanism in bacteria and has been repurposed as an RNA-guided DNA editing tool. Unlike zinc-finger nucleases (ZFNs) and transcription activator-like effector nucleases (TALENs), CRISPR/Cas9 takes advantage of an RNA-guided DNA endonuclease enzyme, Cas9, which is able to generate double-strand breaks (DSBs) at specific genomic locations...
March 19, 2018: International Journal of Molecular Sciences
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