keyword
MENU ▼
Read by QxMD icon Read
search

Production engineering

keyword
https://www.readbyqxmd.com/read/29331906/strontium-hydroxyapatite-scaffolds-engineered-with-stem-cells-aid-osteointegration-and-osteogenesis-in-osteoporotic-sheep-model
#1
Sunitha Chandran, Sachin J Shenoy, Suresh Babu S, Renjith P Nair, Varma H K, Annie John
Osteoporotic fracture healing is an orthopaedic challenge due to excessive bone resorption and impaired osteogenesis. Majority of current treatment strategies focus on regulating bone resorption and the potential application of Mesenchymal Stem Cells (MSCs) in promoting osteogenesis has not been explored much. Furthermore, the present study has put forth a novel approach, wherein the synergistic action of Strontium (Sr) and MSCs in a single implant may facilitate osteoporotic bone healing. Strontium Hydroxyapatite (SrHA) synthesized by wet precipitation was fabricated into tissue engineered Strontium incorporated Hydroxyapatite (cSrHA) using sheep adipose tissue derived MSCs (ADMSCs)...
December 28, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29331892/dynamic-probabilistic-material-flow-analysis-of-nano-sio2-nano-iron-oxides-nano-ceo2-nano-al2o3-and-quantum-dots-in-seven-european-regions
#2
Yan Wang, Bernd Nowack
Static environmental exposure assessment models based on material flow analysis (MFA) have previously been used to estimate flows of engineered nanomaterials (ENMs) to the environment. However, such models do not account for changes in the system behavior over time. Dynamic MFA used in this study includes the time-dependent development of the modelling system by considering accumulation of ENMs in stocks and the environment, and the dynamic release of ENMs from nano-products. In addition, this study also included regional variations in population, waste management systems, and environmental compartments, which subsequently influence the environmental release and concentrations of ENMs...
January 11, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29331411/tailoring-cyanobacterial-cell-factory-for-improved-industrial-properties
#3
REVIEW
Guodong Luan, Xuefeng Lu
Photosynthetic biomanufacturing provides a promising solution for sustainable production of biofuels and biochemicals. Cyanobacteria are among the most promising microbial platforms for the construction of photosynthetic cell factories. Metabolic engineering of cyanobacteria has enabled effective photosynthetic synthesis of diverse natural or non-natural metabolites, while commercialization of photosynthetic biomanufacturing is usually restricted by process and economic feasibilities. In actual outdoor conditions, active cell growth and product synthesis is restricted to narrow light exposure windows of the day-night cycles and is threatened by diverse physical, chemical, and biological environmental stresses...
January 10, 2018: Biotechnology Advances
https://www.readbyqxmd.com/read/29331089/modification-of-chrysanthemum-odour-and-taste-with-chrysanthemol-synthase-induces-strong-dual-resistance-against-cotton-aphids
#4
Hao Hu, Jinjin Li, Thierry Delatte, Jacques Vervoort, Liping Gao, Francel Verstappen, Wei Xiong, Jianping Gan, Maarten A Jongsma, Caiyun Wang
Aphids are pests of chrysanthemum that employ plant volatiles to select host plants and ingest cell contents to probe host quality before engaging in prolonged feeding and reproduction. Changes in volatile and non-volatile metabolite profiles can disrupt aphid-plant interactions and provide new methods of pest control. Chrysanthemol synthase (CHS) from Tanacetum cinerariifolium, represents the first committed step in the biosynthesis of pyrethrin ester insecticides, but no biological role for the chrysanthemol product alone has yet been documented...
January 13, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29330804/in-vivo-manipulation-of-hif-1%C3%AE-expression-during-glioma-genesis
#5
Patricia D B Tiburcio, Séan B Lyne, L Eric Huang
Hypoxia has long been recognized as a driving force of tumor progression and therapeutic resistance, and the transcription factor HIF-1α is believed to play a crucial role in these processes. Here we describe an efficient RCAS/Nes-TVA system that allows for in vivo manipulation of HIF-1α expression in the mouse neural progenitor cells. Simple production of the recombinant avian virus RCAS enables quick delivery of gene of interest through injection into the neural progenitors of transgenic mice expressing the viral cognate receptor TVA under the nestin promoter...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29330665/a-synthetic-pathway-for-the-production-of-2-hydroxyisovaleric-acid-in-escherichia-coli
#6
Seokjung Cheong, James M Clomburg, Ramon Gonzalez
Synthetic biology, encompassing the design and construction of novel artificial biological pathways and organisms and the redesign of existing natural biological systems, is rapidly expanding the number of applications for which biological systems can play an integral role. In the context of chemical production, the combination of synthetic biology and metabolic engineering approaches continues to unlock the ability to biologically produce novel and complex molecules from a variety of feedstocks. Here, we utilize a synthetic approach to design and build a pathway to produce 2-hydroxyisovaleric acid in Escherichia coli and demonstrate how pathway design can be supplemented with metabolic engineering approaches to improve pathway performance from various carbon sources...
January 12, 2018: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29330181/a-novel-l-glutamate-exporter-of-corynebacterium-glutamicum
#7
Yu Wang, Guoqiang Cao, Deyu Xu, Liwen Fan, Xinyang Wu, Xiaomeng Ni, Shuxin Zhao, Ping Zheng, Jibin Sun, Yanhe Ma
Besides metabolic pathways and regulatory networks, transport systems are also pivotal for cellular metabolism and hyper-production of biochemicals using microbial cell factories. Identification and characterization of transporters are therefore of great significance for understanding and engineering of transport reactions. Herein, a novel l-glutamate exporter MscCG2 that extensively exists in Corynebacterium glutamicum strains but is distinct from the only known l-glutamate exporter MscCG was discovered in an industrial l-glutamate producing C...
January 12, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29330178/development-of-an-efficient-genome-editing-tool-in-bacillus-licheniformis-using-crispr-cas9-nickase
#8
Kaifeng Li, Dongbo Cai, Zhangqian Wang, Zhili He, Shouwen Chen
Bacillus strains are important industrial bacteria that can produce various biochemical products. However, low transformation efficiencies and a lack of effective genome editing tools have hindered its widespread application. Recently, clustered regularly interspaced short palindromic repeat (CRISPR)/cas9 techniques have been utilized in many organisms as genome editing tools because of their high efficiency and easy manipulation. In this study, an efficient genome editing method was developed for Bacillus licheniformis using a CRISPR-Cas9 nickase integrated into the genome of B...
January 12, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29330068/engineering-of-hydroxymandelate-synthases-and-the-aromatic-amino-pathway-enables-de-novo-biosynthesis-of-mandelic-and-4-hydroxymandelic-acid-with-saccharomyces-cerevisiae
#9
Mara Reifenrath, Eckhard Boles
Mandelic acid (MA) and 4-hydroxymandelic acid (HMA) are valuable specialty chemicals used as precursors for flavors as well as for cosmetic and pharmaceutical purposes. Today they are mainly synthesized chemically. Their synthesis through microbial fermentation would allow for environmentally sustainable production. In this work, we engineered the yeast Saccharomyces cerevisiae for high-level production of MA and HMA. Expressing the hydroxymandelate synthase from Amycolatopsis orientalis in a yeast wild type strain resulted in the production of 119mg/L HMA from glucose...
January 9, 2018: Metabolic Engineering
https://www.readbyqxmd.com/read/29329860/ethyl-carbamate-an-emerging-food-and-environmental-toxicant
#10
REVIEW
Vemana Gowd, Hongming Su, Petr Karlovsky, Wei Chen
Ethyl carbamate (EC), a chemical substance widely present in fermented food products and alcoholic beverages, has been classified as a Group 2A carcinogen by the International Agency for Research on Cancer (IARC). New evidence indicates that long-term exposure to EC may cause neurological disorders. Formation of EC in food and its metabolism have therefore been studied extensively and analytical methods for EC in various food matrices have been established. Due to the potential threat of EC to human health, mitigation strategies for EC in food products by physical, chemical, enzymatic, and genetic engineering methods have been developed...
May 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29329775/recent-advances-and-strategies-in-process-and-strain-engineering-for-the-production-of-butyric-acid-by-microbial-fermentation
#11
REVIEW
Hongzhen Luo, Rongling Yang, Yuping Zhao, Zhaoyu Wang, Zheng Liu, Mengyu Huang, Qingwei Zeng
Butyric acid is an important platform chemical, which is widely used in the fields of food, pharmaceutical, energy, etc. Microbial fermentation as an alternative approach for butyric acid production is attracting great attention as it is an environmentally friendly bioprocessing. However, traditional fermentative butyric acid production is still not economically competitive compared to chemical synthesis route, due to the low titer, low productivity, and high production cost. Therefore, reduction of butyric acid production cost by utilization of alternative inexpensive feedstock, and improvement of butyric acid production and productivity has become an important target...
January 3, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29329531/chemical-genomic-guided-engineering-of-gamma-valerolactone-tolerant-yeast
#12
Scott Bottoms, Quinn Dickinson, Mick McGee, Li Hinchman, Alan Higbee, Alex Hebert, Jose Serate, Dan Xie, Yaoping Zhang, Joshua J Coon, Chad L Myers, Robert Landick, Jeff S Piotrowski
BACKGROUND: Gamma valerolactone (GVL) treatment of lignocellulosic bomass is a promising technology for degradation of biomass for biofuel production; however, GVL is toxic to fermentative microbes. Using a combination of chemical genomics with the yeast (Saccharomyces cerevisiae) deletion collection to identify sensitive and resistant mutants, and chemical proteomics to monitor protein abundance in the presence of GVL, we sought to understand the mechanism toxicity and resistance to GVL with the goal of engineering a GVL-tolerant, xylose-fermenting yeast...
January 12, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29329339/accessibility-and-contribution-to-glucan-masking-of-natural-and-genetically-tagged-versions-of-yeast-wall-protein-1-of-candida-albicans
#13
Bruce L Granger
Yeast wall protein 1 (Ywp1) is an abundant glycoprotein of the cell wall of the yeast form of Candida albicans, the most prevalent fungal pathogen of humans. Antibodies that bind to the polypeptide backbone of isolated Ywp1 show little binding to intact yeast cells, presumably because the Ywp1 epitopes are masked by the polysaccharides of the mannoproteins that form the outer layer of the cell wall. Rare cells do exhibit much greater anti-Ywp1 binding, however, and one of these was isolated and characterized...
2018: PloS One
https://www.readbyqxmd.com/read/29329004/contemporary-enzyme-based-technologies-for-bioremediation-a-review
#14
REVIEW
Babita Sharma, Arun Kumar Dangi, Pratyoosh Shukla
The persistent disposal of xenobiotic compounds like insecticides, pesticides, fertilizers, plastics and other hydrocarbon containing substances is the major source of environmental pollution which needs to be eliminated. Many contemporary remediation methods such as physical, chemical and biological are currently being used, but they are not sufficient to clean the environment. The enzyme based bioremediation is an easy, quick, eco-friendly and socially acceptable approach used for the bioremediation of these recalcitrant xenobiotic compounds from the natural environment...
January 9, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29327674/insoluble-microenvironment-facilitating-the-generation-and-maintenance-of-pluripotency
#15
Xiaofang Chen, Jiaqi Li, Yan Huang, Peng Liu, Yubo Fan
Induced pluripotent stem cells (iPSCs) hold enormous potential as a tool to generate cells for tissue engineering and regenerative medicine. Since the initial report of iPSCs in 2006, many different methods have been developed in order to enhance the safety and efficiency of this technology. Recent studies indicate that the extracellular signals can promote the production of iPSCs, and even replace the Yamanaka factors. Noticeably, abundant evidences suggest that the insoluble microenvironment, including the culture substrate and neighboring cells, directly regulates the expression of core pluripotency genes and the epigenetic modification of the chromatins, hence impact the reprogramming dynamics...
January 12, 2018: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/29327193/effect-of-vegetation-type-on-treatment-performance-and-bioelectric-production-of-constructed-wetland-modules-combined-with-microbial-fuel-cell-cw-mfc-treating-synthetic-wastewater
#16
Çağdaş Saz, Cengiz Türe, Onur Can Türker, Anıl Yakar
An operation of microcosm-constructed wetland modules combined with microbial fuel cell device (CW-MFC) was assessed for wastewater treatment and bioelectric generation. One of the crucial aims of the present experiment is also to determine effect of vegetation on wastewater treatment process and bioelectric production in wetland matrix with microbial fuel cell. Accordingly, CW-MFC modules with vegetation had higher treatment efficiency compared to unplanted wetland module, and average COD, NH4+, and TP removal efficiency in vegetated wetland modules were ranged from 85 to 88%, 95 to 97%, and 95 to 97%, respectively...
January 11, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29325564/engineered-recombinant-protein-products-of-the-avian-paramyxovirus-type-1-nucleocapsid-and-phosphoprotein-genes-for-serological-diagnosis
#17
Na Zhao, Christian Grund, Martin Beer, Timm C Harder
BACKGROUND: Virulent Newcastle disease virus (NDV, avian Avulavirus-1, APMV-1) induces a highly contagious and lethal systemic disease in gallinaceous poultry. APMV-1 antibody detection is used for surveillance and to control vaccination, but is hampered by cross-reactivity to other subtypes of avian Avulaviruses. Data are lacking concerning the applicability of NDV V proteins as differential diagnostic marker to distinguish vaccinated from virus-infected birds (DIVA strategy). METHODS: Full length and C-terminally truncated nucleocapsid (NP) protein, and the unique C-terminal regions of the phospho- (P) and V proteins of the NDV LaSota strain were bacterially expressed as fusion proteins with the multimerization domain of the human C4 binding protein, and used as diagnostic antigens in indirect ELISA...
January 11, 2018: Virology Journal
https://www.readbyqxmd.com/read/29325211/uptake-and-intracellular-fate-of-engineered-nanoparticles-in-mammalian-cells-capabilities-and-limitations-of-transmission-electron-microscopy-polymer-based-nanoparticles
#18
REVIEW
Martin Reifarth, Stephanie Hoeppener, Ulrich S Schubert
In order to elucidate mechanisms of nanoparticle (NP)-cell interactions, a detailed knowledge about membrane-particle interactions, intracellular distributions, and nucleus penetration capabilities, etc. becomes indispensable. The utilization of NPs as additives in many consumer products, as well as the increasing interest of tailor-made nanoobjects as novel therapeutic and diagnostic platforms, makes it essential to gain deeper insights about their biological effects. Transmission electron microscopy (TEM) represents an outstanding method to study the uptake and intracellular fate of NPs, since this technique provides a resolution far better than the particle size...
January 11, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29324849/the-b-cell-death-function-of-obinutuzumab-hdel-produced-in-plant-nicotiana-benthamiana-l-is-equivalent-to-obinutuzumab-produced-in-cho-cells
#19
Jin Won Lee, Woon Heo, Jinu Lee, Narae Jin, Sei Mee Yoon, Ki Youl Park, Eun Yu Kim, Woo Taek Kim, Joo Young Kim
Plants have attracted attention as bio-drug production platforms because of their economical and safety benefits. The preliminary efficacy of ZMapp, a cocktail of antibodies produced in N. benthamiana (Nicotiana benthamiana L.), suggested plants may serve as a platform for antibody production. However, because the amino acid sequences of the Fab fragment are diverse and differences in post-transcriptional processes between animals and plants remain to be elucidated, it is necessary to confirm functional equivalence of plant-produced antibodies to the original antibody...
2018: PloS One
https://www.readbyqxmd.com/read/29324789/an-l213a-variant-of-%C3%AE-glycosidase-from-sulfolobus-solfataricus-with-increased-%C3%AE-l-arabinofuranosidase-activity-converts-ginsenoside-rc-to-compound-k
#20
Ji-Hyeon Choi, Kyung-Chul Shin, Deok-Kun Oh
Compound K (C-K) is a crucial pharmaceutical and cosmetic component because of disease prevention and skin anti-aging effects. For industrial application of this active compound, the protopanaxadiol (PPD)-type ginsenosides should be transformed to C-K. β-Glycosidase from Sulfolobus solfataricus has been reported as an efficient C-K-producing enzyme, using glycosylated PPD-type ginsenosides as substrates. β-Glycosidase from S. solfataricus can hydrolyze β-d-glucopyranoside in ginsenosides Rc, C-Mc1, and C-Mc, but not α-l-arabinofuranoside in these ginsenosides...
2018: PloS One
keyword
keyword
18008
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"