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https://www.readbyqxmd.com/read/29156681/the-histone-demethylase-kdm3a-is-required-for-normal-epithelial-proliferation-ductal-elongation-and-tumor-growth-in-the-mouse-mammary-gland
#1
Li Qin, Yixiang Xu, Xiaobin Yu, Michael J Toneff, Dabing Li, Lan Liao, Jarrod D Martinez, Yi Li, Jianming Xu
Histone modification alters chromatin architecture to regulate gene transcription. KDM3A is a histone demethylase in the JmjC domain-containing protein family. It removes di- and mono- methyl residues from di- or mono-methylated lysine 9 of histone H3 (H3K9me2/me1). Recent studies have shown that Kdm3a plays an important role in self-renewal of embryonic stem cells, spermatogenesis, metabolism, sex determination and tumor angiogenesis. However, its role in mammary gland development and breast carcinogenesis remains unclear...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156625/gene-based-pathogen-detection-can-we-use-qpcr-to-predict-the-outcome-of-diagnostic-metagenomics
#2
Sandra Christine Andersen, Mette Sofie Rousing Fachmann, Kristoffer Kiil, Eva Møller Nielsen, Jeffrey Hoorfar
In microbial food safety, molecular methods such as quantitative PCR (qPCR) and next-generation sequencing (NGS) of bacterial isolates can potentially be replaced by diagnostic shotgun metagenomics. However, the methods for pre-analytical sample preparation are often optimized for qPCR, and do not necessarily perform equally well for qPCR and sequencing. The present study investigates, through screening of methods, whether qPCR can be used as an indicator for the optimization of sample preparation for NGS-based shotgun metagenomics with a diagnostic focus...
November 20, 2017: Genes
https://www.readbyqxmd.com/read/29155876/docking-analysis-and-the-possibility-of-prediction-efficacy-for-an-anti-il-13-biopharmaceutical-treatment-with-tralokinumab-and-lebrikizumab-for-bronchial-asthma
#3
Yutaka Nakamura, Aki Sugano, Mika Ohta, Yutaka Takaoka
Interleukin-13 (IL-13) is associated with allergic airway inflammation and airway remodeling. Our group found a variant with a single nucleotide polymorphism in the IL13 gene at position +2044G>A (rs20541) that was expected to result in the non-conservative replacement of a positively charged arginine (R) with a neutral glutamine (Q) at position 144. IL-13Q144 was associated with augmented allergic airway inflammation and bronchial asthma remodeling. There is some indication that anti-IL-13 monoclonal antibodies can demonstrate a positive effect on the clinical course of refractory asthmatic patients...
2017: PloS One
https://www.readbyqxmd.com/read/29154447/roles-and-clinical-implications-of-micrornas-in-acute-lymphoblastic-leukemia
#4
REVIEW
Simona Ultimo, Alberto M Martelli, Giorgio Zauli, Marco Vitale, George A Calin, Luca M Neri
MicroRNAs (miRNAs) are a class of small noncoding RNAs which regulate the expression of target genes by binding to messenger RNAs. miRNAs play a role in various biological processes, including proliferation, apoptosis and tumorigenesis. Dysregulation of miRNAs is implicated in invasion and metastasis in several human cancer types, and leukemia is not an exception. Acute Lymphoblastic Leukemia (ALL) is an hematological malignancy characterized by the proliferation of early lymphoid precursors that replace normal hematopoietic cells of the bone marrow...
November 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29151860/dose-dependent-selection-drives-lineage-replacement-during-the-experimental-evolution-of-sdhi-fungicide-resistance-in-zymoseptoria%C3%A2-tritici
#5
Omar Gutiérrez-Alonso, Nichola J Hawkins, Hans J Cools, Michael W Shaw, Bart A Fraaije
Fungicide resistance is a constant threat to agricultural production worldwide. Molecular mechanisms of fungicide resistance have been studied extensively in the wheat pathogen Zymoseptoria tritici. However, less is known about the evolutionary processes driving resistance development. In vitro evolutionary studies give the opportunity to investigate this. Here, we examine the adaptation of Z. tritici to fluxapyroxad, a succinate dehydrogenase (Sdh) inhibitor. Replicate populations of Z. tritici derived from the sensitive isolate IPO323 were exposed to increasing concentrations of fluxapyroxad with or without UV mutagenesis...
December 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/29151385/the-compositional-and-metabolic-responses-of-gilthead-seabream-sparus-aurata-to-a-gradient-of-dietary-fish-oil-and-associated-n-3-long-chain-pufa-content
#6
Sam J S Houston, Vasileios Karalazos, John Tinsley, Mónica B Betancor, Samuel A M Martin, Douglas R Tocher, Oscar Monroig
The replacement of fish oil (FO) with vegetable oil (VO) in feed formulations reduces the availability of n-3 long-chain PUFA (LC-PUFA) to marine fish such as gilthead seabream. The aim of this study was to examine compositional and physiological responses to a dietary gradient of n-3 LC-PUFA. Six iso-energetic and iso-nitrogenous diets (D1-D6) were fed to seabream, with the added oil being a blend of FO and VO to achieve a dietary gradient of n-3 LC-PUFA. Fish were sampled after 4 months feeding, to determine biochemical composition, tissue fatty acid concentrations and lipid metabolic gene expression...
November 20, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29150935/generation-of-insulin-producing-cells-from-human-adipose-derived-mesenchymal-stem-cells-on-pva-scaffold-by-optimized-differentiation-protocol
#7
Seyed Ehsan Enderami, Masoud Soleimani, Yousef Mortazavi, Samad Nadri, Ali Salimi
The studies have been done on patient-specific human adipose-derived from mesenchymal stem cells (hADSCs) like a series of autologous growth factors and nanofibrous scaffolds (3D culture) will probably have many benefits for regenerative medicine in type 1 diabetes mellitus (TIDM) patients in the future. For this purpose, we established a polyvinyl alcohol (PVA) scaffold and a differentiation protocol by adding platelet-rich plasma (PRP) that induces the hADSCs into insulin-producing cells (IPCs). The Characteristics of the derived IPCs in 3D culture were compared with conventional culture (2D) groups evaluated at the mRNA and protein levels...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29150705/novel-polycondensed-biopolyamide-generated-from-biomass-derived-4-aminohydrocinnamic-acid
#8
Yukie Kawasaki, Nag Aniruddha, Hajime Minakawa, Shunsuke Masuo, Tatsuo Kaneko, Naoki Takaya
Biomass plastics are expected to contribute to the establishment of a carbon-neutral society by replacing conventional plastics derived from petroleum. The biomass-derived aromatic amine 4-aminocinnamic acid (4ACA) produced by recombinant bacteria is applied to the synthesis of high-performance biopolymers such as polyamides and polyimides. Here, we developed a microbial catalyst that hydrogenates the α,β-unsaturated carboxylic acid of 4ACA to generate 4-aminohydrocinnamic acid (4AHCA). The ability of 10 microbial genes for enoate and xenobiotic reductases expressed in Escherichia coli to convert 4ACA to 4AHCA was assessed...
November 17, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29150497/low-molecular-weight-thiols-and-thioredoxins-are-important-players-in-hg-ii-resistance-in-thermus-thermophilus-hb27
#9
J Norambuena, Y Wang, T Hanson, J M Boyd, T Barkay
Mercury (Hg), one of the most toxic and widely distributed heavy metals, has a high affinity for thiol groups. Thiol groups reduce and sequester Hg. Therefore, low molecular weight and protein thiols may be important cell components used in Hg resistance. To date, the role of low molecular weight thiols in Hg-detoxification remains understudied. The mercury resistance (mer) operon of Thermus thermophilus suggests an evolutionary link between Hg(II) resistance and low molecular weight thiol metabolism. This mer operon encodes for an enzyme involved in methionine biosynthesis, Oah...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29150108/economy-class-syndrome-what-is-it-and-who-are-the-individuals-at-risk
#10
Luci Maria SantAna Dusse, Marcos Vinícius Ferreira Silva, Letícia Gonçalves Freitas, Milena Soriano Marcolino, Maria das Graças Carvalho
The term 'economy class syndrome' refers to the occurrence of thrombotic events during long-haul flights that mainly occur in passengers in the economy class of the aircraft. This syndrome results from several factors related to the aircraft cabin (immobilization, hypobaric hypoxia and low humidity) and the passenger (body mass index, thrombophilia, oral contraceptives or hormone replacement therapy, cancer), acting together to predispose to excessive blood coagulation, which can result in venous thromboembolism...
October 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/29149845/early-nutritional-programming-affects-liver-transcriptome-in-diploid-and-triploid-atlantic-salmon-salmo-salar
#11
L M Vera, C Metochis, J F Taylor, M Clarkson, K H Skjærven, H Migaud, D R Tocher
BACKGROUND: To ensure sustainability of aquaculture, plant-based ingredients are being used in feeds to replace marine-derived products. However, plants contain secondary metabolites which can affect food intake and nutrient utilisation of fish. The application of nutritional stimuli during early development can induce long-term changes in animal physiology. Recently, we successfully used this approach to improve the utilisation of plant-based diets in diploid and triploid Atlantic salmon...
November 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29149798/reconstructing-biosynthetic-pathway-of-the-plant-derived-cancer-chemopreventive-precursor-glucoraphanin-in-escherichia-coli
#12
Han Yang, Feixia Liu, Yin Li, Bo Yu
Epidemiological data confirmed a strong correlation between regular consumption of cruciferous vegetables and lower cancer risk. This cancer preventive property is mainly attributed to the glucosinolate products, such as glucoraphanin found in broccoli that is derived from methionine. Here we report the first successful reconstruction of the complete biosynthetic pathway of glucoraphanin from methionine in Escherichia coli via gene selection, pathway design, and protein engineering. We used branched-chain amino transferase 3 to catalyze two transamination steps to ensure the purity of precursor molecules and used cysteine as a sulfur donor to simplify the synthesis pathway...
November 17, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/29149647/dietary-fish-oil-differentially-ameliorates-high-fructose-diet-induced-hepatic-steatosis-and-hyperlipidemia-in-mice-depending-on-time-of-feeding
#13
Katsutaka Oishi, Tatsuya Konishi, Chiaki Hashimoto, Saori Yamamoto, Yoshinori Takahashi, Yasuhiko Shiina
Chrononutrition is the science of nutrition based on chronobiology. Numerous epidemiological studies have shown that fish oil (FO) reduces the risk of cardiovascular events through various actions such as lowering triglycerides. The present study aimed to determine the time of day when the hypertriglyceridemia-decreasing ability of FO is optimal in mice. A high-fructose diet (HFrD) that induces hyperlipidemia in mice was replaced with the same diet containing 4% FO (HFrD-4% FO) at different times of the day for 2 weeks as described below...
October 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29148915/the-frequency-of-mutations-in-quinolone-resistance-determining-regions-and-plasmid-mediated-quinolone-resistance-in-shigella-isolates-recovered-from-pediatric-patients-in-tehran-iran-an-overlooked-problem
#14
Sajad Yaghoubi, Reza Ranjbar, Mohammad Mehdi Soltan Dallal, Mohammad Hasan Shirazi, Mohammad Kazem Sharifi-Yazdi
Fluoroquinolone (FQ) resistance in clinical isolates of Shigella species has been increasing reported in recent years. This study was carried out to find the mutations within the quinolone resistance-determining regions (QRDRs) and the prevalence of plasmid-mediated quinolone resistance (PMQR) determinants among the clinical isolates of Shigella sp. in Tehran, Iran. A total of 50 Shigella isolates were collected from five teaching therapeutic centers in Tehran, Iran and analyzed for antibiotic susceptibility over a period of 20 months from July 2015 to January 2017...
November 17, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29147032/emptying-the-stores-lysosomal-diseases-and-therapeutic-strategies
#15
REVIEW
Frances M Platt
Lysosomal storage disorders (LSDs) - designated as 'orphan' diseases - are inborn errors of metabolism caused by defects in genes that encode proteins involved in various aspects of lysosomal homeostasis. For many years, LSDs were viewed as unattractive targets for the development of therapies owing to their low prevalence. However, the development and success of the first commercial biologic therapy for an LSD - enzyme replacement therapy for type 1 Gaucher disease - coupled with regulatory incentives rapidly catalysed commercial interest in therapeutically targeting LSDs...
November 17, 2017: Nature Reviews. Drug Discovery
https://www.readbyqxmd.com/read/29145860/a-new-single-step-protocol-for-rapid-baculovirus-driven-protein-production-in-insect-cells
#16
Judith Scholz, Sabine Suppmann
BACKGROUND: In the last three decades, the Baculovirus expression vector system (BEV) has evolved to one of the most widely used eukaryotic systems for heterologous protein expression including approved vaccines and therapies. Despite the significant improvements introduced during the past years, the BEV system still has major drawbacks, primarily the time required to generate recombinant virus and virus instability for certain target proteins. In this study we show that the conventional method to generate recombinant Baculovirus using a Tn7 transposition based system can be shortened to a single-step transfection-only procedure without further amplification...
November 16, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/29145825/assembling-large-genomes-analysis-of-the-stick-insect-clitarchus-hookeri-genome-reveals-a-high-repeat-content-and-sex-biased-genes-associated-with-reproduction
#17
Chen Wu, Victoria G Twort, Ross N Crowhurst, Richard D Newcomb, Thomas R Buckley
BACKGROUND: Stick insects (Phasmatodea) have a high incidence of parthenogenesis and other alternative reproductive strategies, yet the genetic basis of reproduction is poorly understood. Phasmatodea includes nearly 3000 species, yet only the genome of Timema cristinae has been published to date. Clitarchus hookeri is a geographical parthenogenetic stick insect distributed across New Zealand. Sexual reproduction dominates in northern habitats but is replaced by parthenogenesis in the south...
November 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29145601/identification-and-functional-analysis-of-potential-prophage-derived-recombinases-for-genome-editing-in-lactobacillus-casei
#18
Yongping Xin, Tingting Guo, Yingli Mu, Jian Kong
Numerous LAB bacteriophage genomes have been sequenced, while the functional genes are yet to be exploited. In this study, a λ Red-like recombinase operon LCABL_13040-50-60 was identified from a prophage PLE3 in Lactobacillus casei BL23 genome, and its recombination function was confirmed by replacement of a 167 bp galK fragment with chloramphenicol-resistant gene (cat) in the L. casei BL23 genome. Further functional analysis showed that LCABL_13040 and LCABL_13060 were analogs to the host nuclease inhibitor (Redγ) and 5'-3' exonuclease (Redα/RecE), respectively...
November 14, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29145506/the-prpf-protein-of-shewanella-oneidensis-mr-1-catalyzes-the-isomerization-of-2-methyl-cis-aconitate-during-the-catabolism-of-propionate-via-the-acnd-dependent-2-methylcitric-acid-cycle
#19
Christopher J Rocco, Karl M Wetterhorn, Graeme S Garvey, Ivan Rayment, Jorge C Escalante-Semerena
The 2-methylcitric acid cycle (2-MCC) is a common route of propionate catabolism in microorganisms. In Salmonella enterica, the prpBCDE operon encodes most of the 2-MCC enzymes. In other organisms, e.g., Shewanella oneidensis MR-1, two genes, acnD and prpF replace prpD, which encodes 2-methylcitrate dehydratase. We showed that together, S. oneidensis AcnD and PrpF (SoAcnD, SoPrpF) compensated for the absence of PrpD in a S. enterica prpD strain. We also showed that SoAcnD had 2-methylcitrate dehydratase activity and that PrpF has aconitate isomerase activity...
2017: PloS One
https://www.readbyqxmd.com/read/29143720/epidemiological-investigation-of-a-severe-rumen-fluke-outbreak-on-an-irish-dairy-farm
#20
James O'Shaughnessy, Andres Garcia-Campos, Conor G McAloon, Seamus Fagan, Theo de Waal, Maire McElroy, Micheal Casey, Barbara Good, Grace Mulcahy, John Fagan, Denise Murphy, Annetta Zintl
Although the rumen fluke, Calicophoron daubneyi is now very common and widespread throughout Western Europe, reports of clinical cases are still rare. This study explores the epidemiological background to a severe rumen fluke outbreak in 6-month-old heifers on a dairy farm in Ireland. Sequence analysis of the cytochrome oxidase subunit 1 (Cox1) gene of the rumen fluke metacercariae on pasture failed to identify predominant, possibly pathogenic subtypes. However, estimates of metacercarial load indicated that the animals were exposed to a daily dose of about 5334 C...
November 16, 2017: Parasitology
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