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T cell metabolism

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https://www.readbyqxmd.com/read/28103301/differences-in-beef-quality-between-angus-bos-taurus-taurus-and-nellore-bos-taurus-indicus-cattle-through-a-proteomic-and-phosphoproteomic-approach
#1
Rafael Torres de Souza Rodrigues, Mario Luiz Chizzotti, Camilo Elber Vital, Maria Cristina Baracat-Pereira, Edvaldo Barros, Karina Costa Busato, Rafael Aparecido Gomes, Márcio Machado Ladeira, Taiane da Silva Martins
Proteins are the major constituents of muscle and are key molecules regulating the metabolic changes during conversion of muscle to meat. Brazil is one of the largest exporters of beef and most Brazilian cattle are composed by zebu (Nellore) genotype. Bos indicus beef is generally leaner and tougher than Bos taurus such as Angus. The aim of this study was to compare the muscle proteomic and phosphoproteomic profile of Angus and Nellore. Seven animals of each breed previously subjected the same growth management were confined for 84 days...
2017: PloS One
https://www.readbyqxmd.com/read/28100678/modulation-of-naive-cd8-t-cell-response-features-by-ligand-density-affinity-and-continued-signaling-via-internalized-tcrs
#2
Renu Balyan, Rupali Gund, Chitra Ebenezer, Jasneet Kaur Khalsa, Divya Anna Verghese, Thyagarajan Krishnamurthy, Anna George, Vineeta Bal, Satyajit Rath, Ashutosh Chaudhry
T cell response magnitudes increase with increasing antigenic dosage. However, it is unclear whether ligand density only modulates the proportions of responding ligand-specific T cells or also alters responses at the single cell level. Using brief (3 h) exposure of TCR-transgenic mouse CD8 T cells in vitro to varying densities of cognate peptide-MHC ligand followed by ligand-free culture in IL-2, we found that ligand density determined the frequencies of responding cells but not the expression levels of the early activation marker molecule, CD69...
January 18, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28099844/acetate-recapturing-by-nuclear-acetyl-coa-synthetase-2-prevents-loss-of-histone-acetylation-during-oxygen-and-serum-limitation
#3
Vinay Bulusu, Sergey Tumanov, Evdokia Michalopoulou, Niels J van den Broek, Gillian MacKay, Colin Nixon, Sandeep Dhayade, Zachary T Schug, Johan Vande Voorde, Karen Blyth, Eyal Gottlieb, Alexei Vazquez, Jurre J Kamphorst
Acetyl-CoA is a key metabolic intermediate with an important role in transcriptional regulation. The nuclear-cytosolic acetyl-CoA synthetase 2 (ACSS2) was found to sustain the growth of hypoxic tumor cells. It generates acetyl-CoA from acetate, but exactly which pathways it supports is not fully understood. Here, quantitative analysis of acetate metabolism reveals that ACSS2 fulfills distinct functions depending on its cellular location. Exogenous acetate uptake is controlled by expression of both ACSS2 and the mitochondrial ACSS1, and ACSS2 supports lipogenesis...
January 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/28099841/targeted-inhibition-of-egfr-and-glutaminase-induces-metabolic-crisis-in-egfr-mutant-lung-cancer
#4
Milica Momcilovic, Sean T Bailey, Jason T Lee, Michael C Fishbein, Clara Magyar, Daniel Braas, Thomas Graeber, Nicholas J Jackson, Johannes Czernin, Ethan Emberley, Matthew Gross, Julie Janes, Andy Mackinnon, Alison Pan, Mirna Rodriguez, Melissa Works, Winter Zhang, Francesco Parlati, Susan Demo, Edward Garon, Kostyantyn Krysan, Tonya C Walser, Steven M Dubinett, Saman Sadeghi, Heather R Christofk, David B Shackelford
Cancer cells exhibit increased use of nutrients, including glucose and glutamine, to support the bioenergetic and biosynthetic demands of proliferation. We tested the small-molecule inhibitor of glutaminase CB-839 in combination with erlotinib on epidermal growth factor receptor (EGFR) mutant non-small cell lung cancer (NSCLC) as a therapeutic strategy to simultaneously impair cancer glucose and glutamine utilization and thereby suppress tumor growth. Here, we show that CB-839 cooperates with erlotinib to drive energetic stress and activate the AMP-activated protein kinase (AMPK) pathway in EGFR (del19) lung tumors...
January 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/28099487/metabolic-imaging-of-head-and-neck-cancer-organoids
#5
Amy T Shah, Tiffany M Heaster, Melissa C Skala
Head and neck cancer patients suffer from toxicities, morbidities, and mortalities, and these ailments could be minimized through improved therapies. Drug discovery is a long, expensive, and complex process, so optimized assays can improve the success rate of drug candidates. This study applies optical imaging of cell metabolism to three-dimensional in vitro cultures of head and neck cancer grown from primary tumor tissue (organoids). This technique is advantageous because it measures cell metabolism using intrinsic fluorescence from NAD(P)H and FAD on a single cell level for a three-dimensional in vitro model...
2017: PloS One
https://www.readbyqxmd.com/read/28097715/c-di-amp-modulates-listeria-monocytogenes-central-metabolism-to-regulate-growth-antibiotic-resistance-and-osmoregulation
#6
Aaron T Whiteley, Nicholas E Garelis, Bret N Peterson, Philip H Choi, Liang Tong, Joshua J Woodward, Daniel A Portnoy
Cyclic di-adenosine monophosphate (c-di-AMP) is a conserved nucleotide second messenger critical for bacterial growth and resistance to cell wall-active antibiotics. In Listeria monocytogenes, the sole diadenylate cyclase, DacA, is essential in rich, but not synthetic media and ΔdacA mutants are highly sensitive to the β-lactam antibiotic cefuroxime. In this study, loss of function mutations in the oligopeptide importer (oppABCDF) and glycine betaine importer (gbuABC) allowed ΔdacA mutants to grow in rich medium...
January 18, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28096541/the-mucosal-immune-system-master-regulator-of-bidirectional-gut-brain-communications
#7
REVIEW
Nick Powell, Marjorie M Walker, Nicholas J Talley
Communication between the brain and gut is not one-way, but a bidirectional highway whereby reciprocal signals between the two organ systems are exchanged to coordinate function. The messengers of this complex dialogue include neural, metabolic, endocrine and immune mediators responsive to diverse environmental cues, including nutrients and components of the intestinal microbiota (microbiota-gut-brain axis). We are now starting to understand how perturbation of these systems affects transition between health and disease...
January 18, 2017: Nature Reviews. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28096401/ornithine-decarboxylase-regulates-m1-macrophage-activation-and-mucosal-inflammation-via-histone-modifications
#8
Dana M Hardbower, Mohammad Asim, Paula B Luis, Kshipra Singh, Daniel P Barry, Chunying Yang, Meredith A Steeves, John L Cleveland, Claus Schneider, M Blanca Piazuelo, Alain P Gobert, Keith T Wilson
Macrophage activation is a critical step in host responses during bacterial infections. Ornithine decarboxylase (ODC), the rate-limiting enzyme in polyamine metabolism, has been well studied in epithelial cells and is known to have essential roles in many different cellular functions. However, its role in regulating macrophage function during bacterial infections is not well characterized. We demonstrate that macrophage-derived ODC is a critical regulator of M1 macrophage activation during both Helicobacter pylori and Citrobacter rodentium infection...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096371/cox2-mpges1-pge2-pathway-regulates-pd-l1-expression-in-tumor-associated-macrophages-and-myeloid-derived-suppressor-cells
#9
Victor Prima, Lyudmila N Kaliberova, Sergey Kaliberov, David T Curiel, Sergei Kusmartsev
In recent years, it has been established that programmed cell death protein ligand 1 (PD-L1)-mediated inhibition of activated PD-1(+) T lymphocytes plays a major role in tumor escape from immune system during cancer progression. Lately, the anti-PD-L1 and -PD-1 immune therapies have become an important tool for treatment of advanced human cancers, including bladder cancer. However, the underlying mechanisms of PD-L1 expression in cancer are not fully understood. We found that coculture of murine bone marrow cells with bladder tumor cells promoted strong expression of PD-L1 in bone marrow-derived myeloid cells...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096348/transcriptomic-proteomic-and-metabolomic-landscape-of-positional-memory-in-the-caudal-fin-of-zebrafish
#10
Jeremy S Rabinowitz, Aaron M Robitaille, Yuliang Wang, Catherine A Ray, Ryan Thummel, Haiwei Gu, Danijel Djukovic, Daniel Raftery, Jason D Berndt, Randall T Moon
Regeneration requires cells to regulate proliferation and patterning according to their spatial position. Positional memory is a property that enables regenerating cells to recall spatial information from the uninjured tissue. Positional memory is hypothesized to rely on gradients of molecules, few of which have been identified. Here, we quantified the global abundance of transcripts, proteins, and metabolites along the proximodistal axis of caudal fins of uninjured and regenerating adult zebrafish. Using this approach, we uncovered complex overlapping expression patterns for hundreds of molecules involved in diverse cellular functions, including development, bioelectric signaling, and amino acid and lipid metabolism...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28095804/pulmonary-manifestations-in-niemann-pick-type-c-disease-with-mutations-in-npc2-gene-case-report-and-review-of-literature
#11
Jayesh Sheth, Jijo John Joseph, Krati Shah, Mamta Muranjan, Mehul Mistri, Frenny Sheth
BACKGROUND: Niemann-Pick disease type C (NPC) is an inherited metabolic disorder; due to defect in cellular cholesterol trafficking. It is clinically a heterogeneous disease with variable age of onset with multiple organ systems being involved. NPC1 gene is involved in 95% cases where as remaining ~5% cases are linked with NPC2 gene. CASE PRESENTATION: Case-1, a 14-months-old female presented with recurrent respiratory distress, failure to thrive and hepatosplenomegaly...
January 17, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28095660/draft-genome-of-toxocara-canis-a-pathogen-responsible-for-visceral-larva-migrans
#12
Jinhwa Kong, Jungim Won, Jeehee Yoon, UnJoo Lee, Jong-Il Kim, Sun Huh
This study aimed at constructing a draft genome of the adult female worm Toxocara canis using next-generation sequencing (NGS) and de novo assembly, as well as to find new genes after annotation using functional genomics tools. Using an NGS machine, we produced DNA read data of T. canis. The de novo assembly of the read data was performed using SOAPdenovo. RNA read data were assembled using Trinity. Structural annotation, homology search, functional annotation, classification of protein domains, and KEGG pathway analysis were carried out...
December 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28095188/mir-148a-and-mir-17-5p-synergistically-regulate-milk-tag-synthesis-via-ppargc1a-and-ppara-in-goat-mammary-epithelial-cells
#13
Zhi Chen, Jun Luo, Shuang Sun, Duoyao Cao, Huaiping Shi, Juan J Loor
MicroRNA (miRNA) are a class of '18-25' nt RNA molecules which regulate gene expression and play an important role in several biological processes including fatty acid metabolism. Here we utilized S-Poly (T) and high-throughput sequencing to evaluate the expression of miRNA and mRNA during early-lactation and in the non-lactating ("dry") period in goat mammary gland tissue. Results indicated that miR-148a, miR-17-5p, PPARGC1A and PPARA are highly expressed in the goat mammary gland in early-lactation and non-lactating periods...
January 17, 2017: RNA Biology
https://www.readbyqxmd.com/read/28095040/consensus-statement-by-the-american-association-of-clinical-endocrinologists-and-american-college-of-endocrinology-on-the-comprehensive-type-2-diabetes-management-algorithm-2017-executive-summary
#14
Alan J Garber, Martin J Abrahamson, Joshua I Barzilay, Lawrence Blonde, Zachary T Bloomgarden, Michael A Bush, Samuel Dagogo-Jack, Ralph A DeFronzo, Daniel Einhorn, Vivian A Fonseca, Jeffrey R Garber, W Timothy Garvey, George Grunberger, Yehuda Handelsman, Irl B Hirsch, Paul S Jellinger, Janet B McGill, Jeffrey I Mechanick, Paul D Rosenblit, Guillermo E Umpierrez
EXECUTIVE SUMMARY This algorithm for the comprehensive management of persons with type 2 diabetes (T2D) was developed to provide clinicians with a practical guide that considers the whole patient, their spectrum of risks and complications, and evidence-based approaches to treatment. It is now clear that the progressive pancreatic beta-cell defect that drives the deterioration of metabolic control over time begins early and may be present before the diagnosis of diabetes (1). In addition to advocating glycemic control to reduce microvascular complications, this document highlights obesity and prediabetes as underlying risk factors for the development of T2D and associated macrovascular complications...
January 17, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28094347/endozoicomonas-genomes-reveal-functional-adaptation-and-plasticity-in-bacterial-strains-symbiotically-associated-with-diverse-marine-hosts
#15
Matthew J Neave, Craig T Michell, Amy Apprill, Christian R Voolstra
Endozoicomonas bacteria are globally distributed and often abundantly associated with diverse marine hosts including reef-building corals, yet their function remains unknown. In this study we generated novel Endozoicomonas genomes from single cells and metagenomes obtained directly from the corals Stylophora pistillata, Pocillopora verrucosa, and Acropora humilis. We then compared these culture-independent genomes to existing genomes of bacterial isolates acquired from a sponge, sea slug, and coral to examine the functional landscape of this enigmatic genus...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28092677/wnt-%C3%AE-catenin-signaling-regulates-mitochondrial-activity-to-alter-the-oncogenic-potential-of-melanoma-in-a-pten-dependent-manner
#16
K Brown, P Yang, D Salvador, R Kulikauskas, H Ruohola-Baker, A M Robitaille, A J Chien, R T Moon, V Sherwood
Aberrant regulation of WNT/β-catenin signaling has a crucial role in the onset and progression of cancers, where the effects are not always predictable depending on tumor context. In melanoma, for example, models of the disease predict differing effects of the WNT/β-catenin pathway on metastatic progression. Understanding the processes that underpin the highly context-dependent nature of WNT/β-catenin signaling in tumors is essential to achieve maximal therapeutic benefit from WNT inhibitory compounds. In this study, we have found that expression of the tumor suppressor, phosphatase and tensin homolog deleted on chromosome 10 (PTEN), alters the invasive potential of melanoma cells in response to WNT/β-catenin signaling, correlating with differing metabolic profiles...
January 16, 2017: Oncogene
https://www.readbyqxmd.com/read/28092182/an-estrogen-receptor-%C3%AE-selective-agonist-inhibits-non-alcoholic-steatohepatitis-in-preclinical-models-by-regulating-bile-acid-and-xenobiotic-receptors
#17
Suriyan Ponnusamy, Quynh T Tran, Thirumagal Thiyagarajan, Duane D Miller, Dave Bridges, Ramesh Narayanan
Non-alcoholic steatohepatitis (NASH) affects 8-10 million people in the US and up to 75% of obese individuals. Despite this, there are no approved oral therapeutics to treat NASH and therefore the need for novel approaches exists. The estrogen receptor β (ER-β)-selective agonist, β-LGND2, inhibits body weight and white adipose tissue, and increases metabolism, resulting in higher energy expenditure and thermogenesis. Due to favorable effects of β-LGND2 on obesity, we hypothesized that β-LGND2 will prevent NASH directly by reducing lipid accumulation in the liver or indirectly by favorably changing body composition...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28089489/long-non-coding-rnas-are-associated-with-spatiotemporal-gene-expression-profiles-in-the-marine-gastropod-tegula-atra
#18
Camille Détrée, Gustavo Núñez-Acuña, Fabian Tapia, Cristian Gallardo-Escárate
Increasing evidence suggests that long non-coding RNAs (lncRNAs) play diverse roles in cellular processes, including in the regulation of embryogenesis and growth. However, little is known about the role of lncRNAs in marine invertebrates inhabiting changing environments. Therefore, the aim of this study was to present the first characterization of lncRNAs in an intertidal marine gastropod. Specifically, Tegula atra individuals were sampled in four sites of the central-northern Chilean coastline (28-31°) during summer and winter...
January 12, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28088549/redistribution-of-elements-between-wastes-and-organic-bearing-material-in-the-dispersion-train-of-gold-bearing-sulfide-tailings-part-i-geochemistry-and-mineralogy
#19
B Yu Saryg-Ool, I N Myagkaya, I S Kirichenko, M A Gustaytis, O V Shuvaeva, S M Zhmodik, E V Lazareva
Migration and redistribution of elements during prolonged interaction of cyanide wastes with the underlying natural organic-bearing material have been studied in two ~40cm deep cores that sample primary ores and their weathering profile (wastes I and II, respectively) in the dispersion train of gold-bearing sulfide tailings in Siberia. Analytical results of SR-XRF, whole-rock XRF, AAS, CHNS, and SEM measurements of core samples show high K, Sr, Ti, and Fe enrichments and correlation of P2O5 and Mn with LOI and Corg...
January 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28087537/effects-of-lactobacillus-plantarum-oll2712-culture-conditions-on-the-anti-inflammatory-activity-for-murine-immune-cells-and-obese-and-type-2-diabetic-mice
#20
T Toshimitsu, S Ozaki, J Mochizuki, K Furuichi, Y Asami
: Studies on the health-promoting effects of lactic acid bacteria (LAB) are numerous, but few provide examples of the relationship between LAB function and culture conditions. We verified the effect of differences in culture conditions on Lactobacillus plantarum OLL2712 (OLL2712) functionality; this strain exhibits anti-inflammatory activity and preventive effects against metabolic disorders. We measured IL-10 and IL-12 production in murine immune cells treated with OLL2712 cells prepared under various culture conditions...
January 13, 2017: Applied and Environmental Microbiology
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