keyword
MENU ▼
Read by QxMD icon Read
search

glycosylation

keyword
https://www.readbyqxmd.com/read/27933363/spatially-resolved-metabolic-distribution-for-unraveling-the-physiological-change-and-responses-in-tomato-fruit-using-matrix-assisted-laser-desorption-ionization-mass-spectrometry-imaging-maldi-msi
#1
Junya Nakamura, Tomomi Morikawa-Ichinose, Yoshinori Fujimura, Eisuke Hayakawa, Katsutoshi Takahashi, Takanori Ishii, Daisuke Miura, Hiroyuki Wariishi
Information on spatiotemporal metabolic behavior is indispensable for a precise understanding of physiological changes and responses, including those of ripening processes and wounding stress, in fruit, but such information is still limited. Here, we visualized the spatial distribution of metabolites within tissue sections of tomato (Solanum lycopersicum L.) fruit using a matrix-assisted laser desorption/ionization-mass spectrometry imaging (MALDI-MSI) technique combined with a matrix sublimation/recrystallization method...
December 8, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27932526/human-plasma-n-glycosylation-as-analyzed-by-maldi-fticr-ms-associates-with-markers-of-inflammation-and-metabolic-health
#2
Karli R Reiding, L Renee Ruhaak, Hae-Won Uh, Said El Bouhaddani, Erik B van den Akker, Rosina Plomp, Liam A McDonnell, Jeanine J Houwing-Duistermaat, P Eline Slagboom, Marian Beekman, Manfred Wuhrer
Glycosylation is an abundant co- and post-translational protein modification of importance to protein processing and activity. While not template-defined, glycosylation does reflect the biological state of an organism and is a high-potential biomarker for disease and patient stratification. However, to interpret a complex but informative sample like the total plasma N-glycome (TPNG), it is important to establish its baseline association with plasma protein levels and systemic processes. Thus far, large scale studies (n > 200) of the TPNG have been performed with methods of chromatographic and electrophoretic separation, which, while being informative, are limited in resolving the structural complexity of plasma N-glycans...
December 8, 2016: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/27932477/moss-produced-glycosylation-optimized-human-factor-h-for-therapeutic-application-in-complement-disorders
#3
Stefan Michelfelder, Juliana Parsons, Lennard L Bohlender, Sebastian N W Hoernstein, Holger Niederkrüger, Andreas Busch, Nicola Krieghoff, Jonas Koch, Benjamin Fode, Andreas Schaaf, Thomas Frischmuth, Martin Pohl, Peter F Zipfel, Ralf Reski, Eva L Decker, Karsten Häffner
Genetic defects in complement regulatory proteins can lead to severe renal diseases, including atypical hemolytic uremic syndrome and C3 glomerulopathies, and age-related macular degeneration. The majority of the mutations found in patients with these diseases affect the glycoprotein complement factor H, the main regulator of the alternative pathway of complement activation. Therapeutic options are limited, and novel treatments, specifically those targeting alternative pathway activation, are highly desirable...
December 8, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27932460/protein-o-linked-mannose-%C3%AE-1-4-n-acetylglucosaminyltransferase-2-pomgnt2-is-a-gatekeeper-enzyme-for-functional-glycosylation-of-%C3%AE-dystroglycan
#4
Stephanie M Halmo, Danish Singh, Sneha Patel, Shuo Wang, Melanie Edlin, Geert-Jan Boons, Kelley W Moremen, David Live, Lance Wells
Disruption of the O-mannosylation pathway involved in functional glycosylation of α-dystroglycan gives rise to congenital muscular dystrophies. Protein O-linked mannose β-1,4-N-acetylglucosaminyltransferase 2 (POMGNT2) catalyzes the first step towards the functional matriglycan structure on α-dystroglycan that is responsible for binding extracellular matrix proteins and certain arenaviruses. Alternatively, protein O-linked mannose β-1,2-N-acetylglucosaminyltransferase 1 (POMGNT1) catalyzes the first step towards other various glycan structures present on α-dystroglycan of unknown function...
December 8, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27932382/structures-and-developmental-alterations-of-n-glycans-of-zebrafish-embryos
#5
Ken Hanzawa, Noriko Suzuki, Shunji Natsuka
Zebrafish is a model organism suitable for studying vertebrate development. We analyzed the N-glycan structures of zebrafish embryos and their alterations during zebrafish embryogenesis to obtain basic data for studying the roles of N-glycosylation. Multiple modes of high-performance liquid chromatography and multistage mass spectrometry were used for structural analysis of N-glycans. The N-glycans from deyolked embryos at 36 hours postfertilization, a mid-pharyngula stage, contained relatively higher amounts of complex- and hybrid-type glycans with LacNAc (Galβ1-4GlcNAc) and/or sialyl LacNAc without additional β1,4-Gal, which are commonly found in mammalian tissues, as well as abundant oligomannose-type glycans...
December 8, 2016: Glycobiology
https://www.readbyqxmd.com/read/27931833/hyperglycemia-tumorigenesis-and-chronic-inflammation
#6
REVIEW
Shu-Chun Chang, Wei-Chung Vivian Yang
Hyperglycemia is the most prominent sign that characterizes diabetes. Hyperglycemia favors malignant cell growth by providing energy to cancer cells. Clinical studies also showed an increased risk of diabetes being associated with different types of cancers. In addition, poorly regulated glucose metabolism in diabetic patients is often found with increased levels of chronic inflammatory markers, e.g., interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α, and emerging evidence has highlighted activation of the immune response in the progression and development of cancer cells...
December 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/27931543/efficacy-and-safety-of-the-intensive-dose-of-rosuvastatin-40mg-day-in-patients-with-acute-coronary-syndrome-and-at-high-risk-of-cardiovascular-disease-rosuvees-2
#7
Chetan P Shah, Bhaskar P Shah, Sameer I Dani, B B Channa, S S Lakshmanan, N C Krishnamani, Ashwani Mehta, P Moorthy
BACKGROUND: Randomized clinical trials have established the benefits of statin therapy in acute coronary syndromes (ACS) via their pleiotropic effects. AIM OF THE STUDY: This was a 12-week, open-label, multicenter, postmarketing observational study evaluating the efficacy and safety of rosuvastatin 40 mg/day in very high-risk or high-risk Indian patients according to NCEP ATP III guidelines. METHODOLOGY: One hundred and sixty two patients (age: 30 to 69 years) with evidence of coronary artery disease, hospitalized with chest pain with/without electrocardiogram changes and with non-ST segment elevation ACS and ST segment elevation ACS who received optimal reperfusion therapy were enrolled...
November 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27930580/association-of-rage-gene-gly82ser-polymorphism-with-coronary-artery-disease-and-ischemic-stroke-a-systematic-review-and-meta-analysis
#8
Wen-Qi Ma, Qing-Rong Qu, Yu Zhao, Nai-Feng Liu
BACKGROUND: The receptor for advanced glycosylation end products (RAGE) has been widely linked to diabetic atherosclerosis, but its effects on coronary artery disease (CAD) and ischemic stroke (IS) remain controversial. The Gly82Ser polymorphism is located in the ligand-binding V domain of RAGE, suggesting a possible influence of this variant on RAGE function. The aim of the present study is to clarify the association between the RAGE Gly82Ser polymorphism and susceptibility to CAD and IS...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27930505/increased-membrane-localization-of-pannexin1-in-human-corneal-synaptosomes-causes-enhanced-stimulated-atp-release-in-chronic-diabetes-mellitus
#9
Hao Cui, Ying Liu, Limin Qin, Liqiang Wang, Yifei Huang
In the present study, we investigated the potential changes in the corneal nerve terminals in non-insulin-dependent diabetes mellitus of moderate duration. The dissected corneas were subjected to a protocol of ultracentrifugation to obtain synaptosomes of sensory nerve terminals. Within these nerve varicosities, 2 major mechanisms were examined, viz., alterations of the mechanosensitive channel pannexin1 and ATP release on stimulation of these terminals. We hypothesized that altered cellular location and function of the pannexin channel may contribute to altered mechanosensitivity of the cornea, which in turn may affect wound healing and primary visual function of the cornea...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27929394/metabolism-of-ht-2-toxin-and-t-2-toxin-in-oats
#10
Jacqueline Meng-Reiterer, Christoph Bueschl, Justyna Rechthaler, Franz Berthiller, Marc Lemmens, Rainer Schuhmacher
The Fusarium mycotoxins HT-2 toxin (HT2) and T-2 toxin (T2) are frequent contaminants in oats. These toxins, but also their plant metabolites, may contribute to toxicological effects. This work describes the use of (13)C-assisted liquid chromatography-high-resolution mass spectrometry for the first comprehensive study on the biotransformation of HT2 and T2 in oats. Using this approach, 16 HT2 and 17 T2 metabolites were annotated including novel glycosylated and hydroxylated forms of the toxins, hydrolysis products, and conjugates with acetic acid, putative malic acid, malonic acid, and ferulic acid...
December 5, 2016: Toxins
https://www.readbyqxmd.com/read/27928741/site-specific-glycosylation-of-the-newcastle-disease-virus-haemagglutinin-neuraminidase
#11
Cassandra L Pegg, Christine Hoogland, Jeffrey J Gorman
Members of the Avulavirus, Respirovirus and Rubulavirus genera of the Paramyxoviridae family of viruses utilise haemagglutinin-neuraminidase glycoproteins as their attachment proteins. These glycoproteins are oligomeric type II integral membrane proteins, which possess haemagglutination and sialidase activity. Previous studies have shown that the N-linked glycans present on these proteins can modulate the ability of the virus to infect host cells and stimulate the host immune system. However, site-specific heterogeneity of these glycans has not been defined...
December 7, 2016: Glycoconjugate Journal
https://www.readbyqxmd.com/read/27927990/rft1-affects-gpi-anchor-glycosylation
#12
Petra Gottier, Amaia Gonzalez-Salgado, Anant K Menon, Yuk-Chien Liu, Alvaro Acosta-Serrano, Peter Bütikofer
The membrane protein RFT1 is essential for normal protein N‑glycosylation, but its precise function is not known. RFT1 was originally proposed to translocate the glycolipid Man5GlcNAc2-PP-dolichol (needed to synthesize N-glycan precursors) across the endoplasmic reticulum membrane, but subsequent studies showed that it does not play a direct role in transport. In contrast to the situation in yeast, RFT1 is not essential for growth of the parasitic protozoan Trypanosoma brucei, enabling the study of its function in a null background...
December 7, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27927205/elimination-of-n-glycosylation-by-site-mutation-further-prolongs-the-half-life-of-ifn-%C3%AE-fc-fusion-proteins-expressed-in-pichia-pastoris
#13
Hao Jia, Yugang Guo, Xiaoping Song, Changsheng Shao, Jing Wu, Jiajia Ma, Mingyang Shi, Yuhui Miao, Rui Li, Dong Wang, Zhigang Tian, Weihua Xiao
BACKGROUND: Interferon (IFN)-α has been commonly used as an antiviral drug worldwide; however, its short half-life in circulation due to its low molecular weight and sensitivity to proteases impacts its efficacy and patient compliance. RESULTS: In this study, we present an IgG1 Fc fusion strategy to improve the circulation half-life of IFN-α. Three different forms of IgG1 Fc fragments, including the wild type, aglycosylated homodimer and aglycosylated single chain, were each fused with IFN-α and designated as IFN-α/Fc-WT, IFN-α/Fc-MD, and IFN-α/Fc-SC, respectively...
December 7, 2016: Microbial Cell Factories
https://www.readbyqxmd.com/read/27927080/red-ginseng-powder-fermented-with-probiotics-exerts-antidiabetic-effects-in-the-streptozotocin-induced-mouse-diabetes-model
#14
Sun-Hee Jang, Jisang Park, Sae-Hae Kim, Kyung-Min Choi, Eun-Sil Ko, Jeong-Dan Cha, Young-Ran Lee, Hyonseok Jang, Yong-Suk Jang
CONTEXT: Red ginseng (heat-processed Panax ginseng) is a well-known alternative medicine with pharmacological antidiabetic activity. It exerts pharmacological effects through the transformation of saponin into metabolites by the intestinal microbiota. Given that intestinal conditions and intestinal microflora vary among individuals, the pharmacological effects of orally administered red ginseng likely may vary among individuals. OBJECTIVE: To overcome this variation and produce homogeneously effective red ginseng, we evaluated the antidiabetic effects of probiotic-fermented red ginseng in a mouse model...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27926828/harnessing-cancer-cell-metabolism-for-theranostic-applications-using-metabolic-glycoengineering-of-sialic-acid-in-breast-cancer-as-a-pioneering-example
#15
REVIEW
Haitham A Badr, Dina M M AlSadek, Motawa E El-Houseini, Christopher T Saeui, Mohit P Mathew, Kevin J Yarema, Hafiz Ahmed
Abnormal cell surface display of sialic acids - a family of unusual 9-carbon sugars - is widely recognized as distinguishing feature of many types of cancer. Sialoglycans, however, typically cannot be identified with sufficiently high reproducibility and sensitivity to serve as clinically accepted biomarkers and similarly, almost all efforts to exploit cancer-specific differences in sialylation signatures for therapy remain in early stage development. In this report we provide an overview of important facets of glycosylation that contribute to cancer in general with a focus on breast cancer as an example of malignant disease characterized by aberrant sialylation...
November 25, 2016: Biomaterials
https://www.readbyqxmd.com/read/27924984/infrared-imaging-of-high-density-protein-arrays
#16
Joëlle De Meutter, Julie Vandenameele, André Matagne, Erik Goormaghtigh
We propose in this paper that protein microarrays could be analysed by infrared imaging in place of enzymatic or fluorescence labelling. This label-free method reports simultaneously a large series of data on the spotted sample (protein secondary structure, phosphorylation, glycosylation, presence of impurities, etc.). In the present work, 100 μm protein spots each containing about 100 pg protein were deposited to form high density regular arrays. Using arrays of infrared detectors, high resolution images could be obtained where each pixel of the image is in fact a full infrared spectrum...
December 7, 2016: Analyst
https://www.readbyqxmd.com/read/27924918/production-of-phloroglucinol-a-platform-chemical-in-arabidopsis-using-a-bacterial-gene
#17
Salah E Abdel-Ghany, Irene Day, Adam L Heuberger, Corey D Broeckling, Anireddy S N Reddy
Phloroglucinol (1,3,5-trihydroxybenzene; PG) and its derivatives are phenolic compounds that are used for various industrial applications. Current methods to synthesize PG are not sustainable due to the requirement for carbon-based precursors and co-production of toxic byproducts. Here, we describe a more sustainable production of PG using plants expressing a native bacterial or a codon-optimized synthetic PhlD targeted to either the cytosol or chloroplasts. Transgenic lines were analyzed for the production of PG using gas and liquid chromatography coupled to mass spectroscopy...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924363/characteristics-and-applications-of-recombinant-thermostable-amylopullulanase-of-geobacillus-thermoleovorans-secreted-by-pichia-pastoris
#18
M Nisha, T Satyanarayana
The 3'-deleted amylopullulanase gene from the extreme thermophile Geobacillus thermoleovorans (Gt-apuΔC) was expressed extracellularly in Pichia pastoris under both methanol-inducible AOX1 and constitutive GAP promoters. The expression of the gene (Gt-apuΔC) was higher under GAP promoter (36.2 U ml(-1), α-amylase; 33.5 U ml(-1), pullulanase) than that under AOX1 promoter (32.5 and 28.6 U ml(-1)). The heavily glycosylated Gt-apuΔC from the recombinant P. pastoris displays higher substrate specificity, thermal stability and starch saccharification efficiency than that expressed in Escherichia coli...
December 6, 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27924120/hippophae-rhamnoides-n-glycoproteome-analysis-a-small-step-towards-sea-buckthorn-proteome-mining
#19
Yaiphabi Sougrakpam, Renu Deswal
Hippophae rhamnoides is a hardy shrub capable of growing under extreme environmental conditions namely, high salt, drought and cold. Its ability to grow under extreme conditions and its wide application in pharmaceutical and nutraceutical industry calls for its in-depth analysis. N-glycoproteome mining by con A affinity chromatography from seedling was attempted. The glycoproteome was resolved on first and second dimension gel electrophoresis. A total of 48 spots were detected and 10 non-redundant proteins were identified by MALDI-TOF/TOF...
October 2016: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/27923373/microbial-production-of-next-generation-stevia-sweeteners
#20
Kim Olsson, Simon Carlsen, Angelika Semmler, Ernesto Simón, Michael Dalgaard Mikkelsen, Birger Lindberg Møller
BACKGROUND: The glucosyltransferase UGT76G1 from Stevia rebaudiana is a chameleon enzyme in the targeted biosynthesis of the next-generation premium stevia sweeteners, rebaudioside D (Reb D) and rebaudioside M (Reb M). These steviol glucosides carry five and six glucose units, respectively, and have low sweetness thresholds, high maximum sweet intensities and exhibit a greatly reduced lingering bitter taste compared to stevioside and rebaudioside A, the most abundant steviol glucosides in the leaves of Stevia rebaudiana...
December 7, 2016: Microbial Cell Factories
keyword
keyword
12722
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"