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https://www.readbyqxmd.com/read/29151156/deep-rnaseq-indicates-protective-mechanisms-of-cold-tolerant-indica-rice-plants-during-early-vegetative-stage
#1
Raul Antonio Sperotto, Artur Teixeira de Araújo Junior, Janete Mariza Adamski, Denise Cargnelutti, Felipe Klein Ricachenevsky, Ben-Hur Neves de Oliveira, Renata Pereira da Cruz, Rinaldo Pires Dos Santos, Leila Picolli da Silva, Janette Palma Fett
Cold-tolerance in rice may be related to increased cellulose deposition in the cell wall, membrane fatty acids unsaturation and differential expression of several newly identified genes. Low temperature exposure during early vegetative stages limits rice plant's growth and development. Most genes previously related to cold tolerance in rice are from the japonica subspecies. To help clarify the mechanisms that regulate cold tolerance in young indica rice plants, comparative transcriptome analysis of 6 h cold-treated (10 °C) leaves from two genotypes, cold-tolerant (CT) and cold-sensitive (CS), was performed...
November 18, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/29151072/the-lactate-receptor-hcar1-gpr81-contributes-to-doxorubicin-chemoresistance-via-abcb1-transporter-up-regulation-in-human-cervical-cancer-hela-cells
#2
W Wagner, K D Kania, A Blauz, W M Ciszewski
The lactate receptor, also known as hydroxycarboxylic acid receptor 1 (HCAR1/GPR81), plays a vital role in cancer biology. Recently, HCAR1 was reported to enhance metastasis, cell growth, and survival of pancreatic, breast, and cervical cancer cells. This study showed, for the first time, the mechanism of HCAR1-mediated chemoresistance to doxorubicin through regulation of ABCB1 transporter. We observed the HCAR1 agonists L-lactate, D-lactate and 3,5-dihydroxybenzoic acid (DHBA) induced up-regulation of ABCB1...
August 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29150945/development-of-an-in-vivo-mouse-model-of-discogenic-low-back-pain
#3
Changgui Shi, Vaskar Das, Xin Li, Ranjan Kc, Sujun Qiu, InSug O-Sullivan, Richard L Ripper, Jeffrey S Kroin, Fackson Mwale, Atiyayein A Wallace, Bingqian Zhu, Lan Zhao, Andre J van Wijnen, Mingliang Ji, Jun Lu, Gina Votta-Velis, Wen Yuan, Hee-Jeong Im
Discogenic Low back pain (DLBP) is extremely common and costly. Effective treatments are lacking due to DLBP's unknown pathogenesis. Currently, there are no in vivo mouse models of DLBP, which restricts research in this field. The aim of this study was to establish a reliable DLBP model in mouse that captures the pathological changes in the disc and allows longitudinal pain testing. The model was generated by puncturing the mouse lumbar discs (L4/5, L5/6, and L6/S1) and removing the nucleus pulposus using a microscalpel under the microscope...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29150921/tgf-%C3%AE-and-hepatocellular-carcinoma-when-a-friend-becomes-an-enemy
#4
Marco Arrese, Daniel Cabrera, Alejandra Hernandez, Luis Astete, Lisbell Estrada, Claudio Cabello-Verrugio
Hepatocellular carcinoma (HCC) is the second most common cause of cancer death worldwide accounting for more than 700 thousand deaths per year. Most of the HCC develops in a cirrhotic liver, a microenvironment where fibrotic tissue replaces parenchymal cells. Thus, there is a close connection between fibrosis and HCC development. Understanding the cellular and molecular mechanisms involved in this process is a crucial step to advance in novel therapeutic or pharmacological strategies to prevent or improve the course of this malignancy...
November 16, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29150918/central-role-of-transforming-ggrowth-factor-type-beta-1-in-skeletal-muscle-dysfunctions-an-update-on-therapeutic-strategies
#5
Johanna Abrigo, Felipe Simon, Daniel Cabrera, Gonzalo Cordova, Capucine Trollet, Claudio Cabello Verrugio
Among the soluble factors that regulate skeletal muscle function, Transforming Growth Factor type Beta 1 (TGF-b1) is one of the most studied. This factor inhibits myogenesis and regeneration by regulating the activity and function of satellite cells (SCs). Indeed, TGF-b has a central role in muscle pathologies in which there is development of fibrosis and/or atrophy of skeletal muscle. Thus, in this review we present the critical and recent antecedents regarding the mechanisms and cellular targets involved in the effects of TGF-b1 in the muscle, in pathological processes such as the inhibition of regeneration, fibrosis and atrophy...
November 16, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29150917/regulation-of-mesenchymal-stem-cell-differentiation-by-transforming-growth-factor-beta-superfamily
#6
Jelena Krstic, Drenka Trivanovic, Hristina Obradovic, Tamara Kukolj, Diana Bugarski, Juan F Santibanez
The ability to differentiate into cells of different lineage, such as muscle, bone, cartilage and fat, is the chief value of adult mesenchymal stem cells (MSCs) which can be used with the final aim to regenerate damaged tissue. Due to potential use, as well as importance in tissue development, a number of questions have been raised regarding the molecular mechanisms of MSC differentiation. As one of the crucial mediators in organism development, transforming growth factor beta (TGF-β) superfamily directs MSCs commitment in the selection of differentiation pathways...
November 16, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29150912/sustaining-an-efficient-and-effective-cho-cell-line-development-platform-by-incorporation-of-24-deep-well-plate-screening-and-multivariate-analysis
#7
Alessandro Mora, Sheng Sam Zhang, Gerald Carson, Bernard Nabiswa, Patrick Hossler, Seongkyu Yoon
Efficient and effective cell line screening is paramount towards a successful biomanufacturing program. Here we describe the implementation of 24-deep well plate screening of CHO lines as part of the cell line development platform at AbbVie. Incorporation of this approach accelerated the identification of the best candidate lines for process development. In an effort to quantify and predict process performance comparability, we compared cell culture performance in 24-deep well plates (24-DWP) and in shake flasks, for a panel of Chinese Hamster Ovary cell lines expressing a monoclonal antibody...
November 18, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/29150881/genotoxicity-of-11-heavy-metals-detected-as-food-contaminants-in-two-human-cell-lines
#8
B Kopp, D Zalko, M Audebert
Heavy metals, such as arsenic (As), antimony (Sb), barium (Ba), cadmium (Cd), cobalt (Co), germanium (Ge), lead (Pb), nickel (Ni), tellurium (Te), and vanadium (V) are widely distributed in the environment and in the food chain. Human exposure to heavy metals through water and food has been reported by different international agencies. Although some of these heavy metals are essential elements for human growth and development, they may also be toxic at low concentrations due to indirect mechanisms. In this study, the genotoxic and cytotoxic properties of 15 different oxidation statuses of 11 different heavy metals were investigated using high-throughput screening (γH2AX assay) in two human cell lines (HepG2 and LS-174T) representative of target organs (liver and colon) for food contaminants...
November 18, 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29150823/metabolic-dynamics-and-physiological-adaptation-of-panax-ginseng-during-development
#9
Yu-Jin Kim, Sung Chul Joo, Jianxin Shi, Chaoyang Hu, Sheng Quan, Jianping Hu, Johan Sukweenadhi, Padmanaban Mohanan, Deok-Chun Yang, Dabing Zhang
The dynamics of metabolites from leaves to roots of Panax ginseng during development has revealed the tissue-specific and year-specific metabolic networks. Being an essential Oriental medicinal plant, ginseng (Panax ginseng Meyer) is a slow-growing perennial herb-accumulating pharmaceutically active metabolites such as ginsenosides in roots during growth. However, little is known about how ginseng plants survive in the harsh environments such as winter cold and summer heat for a longer period and accumulates those active metabolites as the plant grows...
November 17, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/29150814/detecting-multiple-random-changepoints-in-bayesian-piecewise-growth-mixture-models
#10
Eric F Lock, Nidhi Kohli, Maitreyee Bose
Piecewise growth mixture models are a flexible and useful class of methods for analyzing segmented trends in individual growth trajectory over time, where the individuals come from a mixture of two or more latent classes. These models allow each segment of the overall developmental process within each class to have a different functional form; examples include two linear phases of growth, or a quadratic phase followed by a linear phase. The changepoint (knot) is the time of transition from one developmental phase (segment) to another...
November 17, 2017: Psychometrika
https://www.readbyqxmd.com/read/29150805/aspergillus-terreus-treated-rice-straw-suppresses-methane-production-and-enhances-feed-digestibility-in-goats
#11
P Mohd Azlan, M F Jahromi, M O Ariff, M Ebrahimi, S C L Candyrine, J B Liang
The objectives of this study were to test the efficacy of producing lovastatin in rice straw treated with Aspergillus terreus in larger laboratory scale following the procedure previously reported and to investigate the effectiveness of the treated rice straw containing lovastatin on methane mitigation in goats. The concentration of lovastatin in the treated rice straw was 0.69 ± 0.05 g/kg dry matter (DM) rice straw. Our results showed that supplementation of lovastatin at 4.14 mg/kg BW reduced methane production by 32% while improving the DM digestibility by 13% (P < 0...
November 17, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29150759/from-experiment-to-theory-what-can-we-learn-from-growth-curves
#12
Irina Kareva, Georgy Karev
Finding an appropriate functional form to describe population growth based on key properties of a described system allows making justified predictions about future population development. This information can be of vital importance in all areas of research, ranging from cell growth to global demography. Here, we use this connection between theory and observation to pose the following question: what can we infer about intrinsic properties of a population (i.e., degree of heterogeneity, or dependence on external resources) based on which growth function best fits its growth dynamics? We investigate several nonstandard classes of multi-phase growth curves that capture different stages of population growth; these models include hyperbolic-exponential, exponential-linear, exponential-linear-saturation growth patterns...
November 17, 2017: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/29150732/dimethylarginine-dimethylaminohydrolase-1-ddah1-is-frequently-upregulated-in-prostate-cancer-and-its-overexpression-conveys-tumor-growth-and-angiogenesis-by-metabolizing-asymmetric-dimethylarginine-adma
#13
Karthik Reddy Kami Reddy, Chandrashekhar Dasari, Divya Duscharla, Bhukya Supriya, N Sai Ram, M V Surekha, Jerald Mahesh Kumar, Ramesh Ummanni
Tissue microarray analysis confirmed higher dimethylarginine dimethylaminohydrolase-1 (DDAH1) expression in prostate cancer (PCa) compared to benign and normal prostate tissues. DDAH1 regulates nitric oxide (NO) production by degrading endogenous nitric oxide synthase (NOS) inhibitor, asymmetric dimethylarginine (ADMA). This study examined whether DDAH1 has any physiological role in PCa progression. Using overexpression of DDAH1 in PCa (PC3 and LNCaP) cell lines, we found that DDAH1 promotes cell proliferation, migration and invasion by lowering ADMA levels, as well as increasing NO production...
November 17, 2017: Angiogenesis
https://www.readbyqxmd.com/read/29150644/therapeutic-effects-of-hepatocyte-growth-factor-overexpressing-dental-pulp-stem-cells-on-liver-cirrhosis-in-a-rat-model
#14
Xiao-Fang Cao, Shi-Zhu Jin, Liang Sun, Yuan-Bo Zhan, Feng Lin, Ying Li, Ying-Lian Zhou, Xiu-Mei Wang, Li Gao, Bin Zhang
Cirrhosis is the terminal stage of hepatic diseases and is prone to develop into hepatocyte carcinoma. Increasing evidence suggests that the transplantation of dental pulp stem cells (DPSCs) may promote recovery from cirrhosis, but the key regulatory mechanisms involved remain to be determined. In this study, we overexpressed human hepatocyte growth factor (hHGF) in primary rat DPSCs and evaluated the effects of HGF overexpression on the biological behaviors and therapeutic efficacy of grafted DPSCs in cirrhosis...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150628/artificial-topography-changes-the-growth-strategy-of-spartina-alterniflora-case-study-with-wave-exposure-as-a-comparison
#15
Hualong Hong, Minyue Dai, Haoliang Lu, Jingchun Liu, Jie Zhang, Chaoqi Chen, Kang Xia, Chongling Yan
This paper reports findings about the growth of Spartina alterniflora (Loisel.) near an engineered coastal protection defences to discover the potential influences on vegetation growth from the artificial topography. Impacts of the artificial topography on the sediment element composition were detected by comparing the fixed effects caused by artificial topography and wave exposure using linear mixed models. Surficial sediments under the impacts of artificial topography contain elevated levels of biogenic elements and heavy metals, including C (and organic carbon), N, S, Al, Fe, Mn, Cu, Zn, As, Cd, Cr, Ni, and Pb...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150606/loss-of-hif-1%C3%AE-in-natural-killer-cells-inhibits-tumour-growth-by-stimulating-non-productive-angiogenesis
#16
Ewelina Krzywinska, Chahrazade Kantari-Mimoun, Yann Kerdiles, Michal Sobecki, Takayuki Isagawa, Dagmar Gotthardt, Magali Castells, Johannes Haubold, Corinne Millien, Thomas Viel, Bertrand Tavitian, Norihiko Takeda, Joachim Fandrey, Eric Vivier, Veronika Sexl, Christian Stockmann
Productive angiogenesis, a prerequisite for tumour growth, depends on the balanced release of angiogenic and angiostatic factors by different cell types within hypoxic tumours. Natural killer (NK) cells kill cancer cells and infiltrate hypoxic tumour areas. Cellular adaptation to low oxygen is mediated by Hypoxia-inducible factors (HIFs). We found that deletion of HIF-1α in NK cells inhibited tumour growth despite impaired tumour cell killing. Tumours developing in these conditions were characterised by a high-density network of immature vessels, severe haemorrhage, increased hypoxia, and facilitated metastasis due to non-productive angiogenesis...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29150516/drna-seq-implicates-sulfide-as-master-regulator-of-s-0-metabolism-in-chlorobaculum-tepidum-and-other-green-sulfur-bacteria
#17
Jacob M Hilzinger, Vidhyavathi Raman, Kevin E Shuman, Brian J Eddie, Thomas E Hanson
The green sulfur bacteria (Chlorobiaceae) are anaerobes that use electrons from reduced sulfur compounds (sulfide, S(0), and thiosulfate) as electron donors for photoautotrophic growth. Chlorobaculum tepidum, the model system for the Chlorobiaceae, both produces and consumes extracellular S(0) globules depending on the availability of sulfide in the environment. These physiological changes imply significant changes in gene regulation, which has been observed when sulfide is added to Cba. tepidum growing on thiosulfate...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29150514/sinorhizobium-meliloti-glutathione-reductase-is-required-for-both-redox-homeostasis-and-symbiosis
#18
Guirong Tang, Ningning Li, Yumin Liu, Liangliang Yu, Junhui Yan, Li Luo
Glutathione (L-γ-glutamyl-L-cysteinylglycine; GSH), one of the key antioxidants in Sinorhizobium meliloti, is required for the development of alfalfa (Medicago sativa) nitrogen-fixing nodules. Glutathione exists either in a reduced form (GSH) or an oxidized form (GSSG), and its content is regulated by two pathways in S. meliloti The first pathway is the de novo synthesis of glutathione from its constituent amino acids, namely, Glu, Cys, and Gly, catalyzed by γ-glutamyl cysteine synthetase (GshA) and glutathione synthetase (GshB)...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29150512/a-genetic-system-for-the-thermophilic-acetogenic-bacterium-thermoanaerobacter-kivui
#19
Mirko Basen, Irina Geiger, Laura Henke, Volker Müller
Thermoanaerobacter kivui is one of the very few thermophilic acetogenic microorganisms. It grows optimally at 66°C on sugars but also lithotrophically with H2 + CO2 or with CO, producing acetate as major product. While a genome-derived model of acetogenesis has been developed, only few physiological or biochemical experiments towards the function of important enzymes in carbon and energy metabolism have been carried out. To address this issue, we developed a method for targeted, markerless gene deletions and for integration of genes into the genome of T...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29150511/sulfolobus-acidocaldarius-uptakes-pentoses-via-a-cut2-type-abc-transporter-and-metabolizes-them-through-the-aldolase-independent-weimberg-pathway
#20
Michaela Wagner, Lu Shen, Andreas Albersmeier, Nienke van der Kolk, Sujin Kim, Jaeho Cha, Christopher Bräsen, Jörn Kalinowski, Bettina Siebers, Sonja-Verena Albers
Sulfolobus spp. possess a great metabolic versatility and grow heterotrophically on various carbon sources such as different sugars and peptides. Known sugar transporters in Archaea predominantly belong to ABC transport systems. Although several ABC transporters for sugar uptake have been characterized in the crenarchaeon Sulfolobus solfataricus, only one homologue of these transporters, the maltose/maltooligomer transporter, could be identified in the closely related Sulfolobus acidocaldarius Comparison of the transcriptome of S...
November 17, 2017: Applied and Environmental Microbiology
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